1
|
Grander M, Haschka D, Indelicato E, Kremser C, Amprosi M, Nachbauer W, Henninger B, Stefani A, Högl B, Fischer C, Seifert M, Kiechl S, Weiss G, Boesch S. Genetic Determined Iron Starvation Signature in Friedreich's Ataxia. Mov Disord 2024. [PMID: 38686449 DOI: 10.1002/mds.29819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 04/02/2024] [Accepted: 04/09/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND Early studies in cellular models suggested an iron accumulation in Friedreich's ataxia (FA), yet findings from patients are lacking. OBJECTIVES The objective is to characterize systemic iron metabolism, body iron storages, and intracellular iron regulation in FA patients. METHODS In FA patients and matched healthy controls, we assessed serum iron parameters, regulatory hormones as well as the expression of regulatory proteins and iron distribution in peripheral blood mononuclear cells (PBMCs). We applied magnetic resonance imaging with R2*-relaxometry to quantify iron storages in the liver, spleen, and pancreas. Across all evaluations, we assessed the influence of the genetic severity as expressed by the length of the shorter GAA-expansion (GAA1). RESULTS We recruited 40 FA patients (19 women). Compared to controls, FA patients displayed lower serum iron and transferrin saturation. Serum ferritin, hepcidin, mean corpuscular hemoglobin and mean corpuscular volume in FA inversely correlated with the GAA1-repeat length, indicating iron deficiency and restricted availability for erythropoiesis with increasing genetic severity. R2*-relaxometry revealed a reduction of splenic and hepatic iron stores in FA. Liver and spleen R2* values inversely correlated with the GAA1-repeat length. FA PBMCs displayed downregulation of ferritin and upregulation of transferrin receptor and divalent metal transporter-1 mRNA, particularly in patients with >500 GAA1-repeats. In FA PBMCs, intracellular iron was not increased, but shifted toward mitochondria. CONCLUSIONS We provide evidence for a previously unrecognized iron starvation signature at systemic and cellular levels in FA patients, which is related to the underlying genetic severity. These findings challenge the use of systemic iron lowering therapies in FA. © 2024 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
Collapse
Affiliation(s)
- Manuel Grander
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - David Haschka
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Elisabetta Indelicato
- Center for Rare Movement Disorders Innsbruck, Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian Kremser
- Department of Radiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Matthias Amprosi
- Center for Rare Movement Disorders Innsbruck, Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Wolfgang Nachbauer
- Center for Rare Movement Disorders Innsbruck, Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Benjamin Henninger
- Department of Radiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Ambra Stefani
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Birgit Högl
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Christine Fischer
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Stefan Kiechl
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
- VASCage, Centre on Clinical Stroke Research, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Sylvia Boesch
- Center for Rare Movement Disorders Innsbruck, Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| |
Collapse
|
2
|
Buoso C, Seifert M, Lang M, Griffith CM, Talavera Andújar B, Castelo Rueda MP, Fischer C, Doerrier C, Talasz H, Zanon A, Pramstaller PP, Schymanski EL, Pichler I, Weiss G. Dopamine‑iron homeostasis interaction rescues mitochondrial fitness in Parkinson's disease. Neurobiol Dis 2024; 196:106506. [PMID: 38648865 DOI: 10.1016/j.nbd.2024.106506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 04/17/2024] [Accepted: 04/17/2024] [Indexed: 04/25/2024] Open
Abstract
Imbalances of iron and dopamine metabolism along with mitochondrial dysfunction have been linked to the pathogenesis of Parkinson's disease (PD). We have previously suggested a direct link between iron homeostasis and dopamine metabolism, as dopamine can increase cellular uptake of iron into macrophages thereby promoting oxidative stress responses. In this study, we investigated the interplay between iron, dopamine, and mitochondrial activity in neuroblastoma SH-SY5Y cells and human induced pluripotent stem cell (hiPSC)-derived dopaminergic neurons differentiated from a healthy control and a PD patient with a mutation in the α-synuclein (SNCA) gene. In SH-SY5Y cells, dopamine treatment resulted in increased expression of the transmembrane iron transporters transferrin receptor 1 (TFR1), ferroportin (FPN), and mitoferrin2 (MFRN2) and intracellular iron accumulation, suggesting that dopamine may promote iron uptake. Furthermore, dopamine supplementation led to reduced mitochondrial fitness including decreased mitochondrial respiration, increased cytochrome c control efficiency, reduced mtDNA copy number and citrate synthase activity, increased oxidative stress and impaired aconitase activity. In dopaminergic neurons derived from a healthy control individual, dopamine showed comparable effects as observed in SH-SY5Y cells. The hiPSC-derived PD neurons harboring an endogenous SNCA mutation demonstrated altered mitochondrial iron homeostasis, reduced mitochondrial capacity along with increased oxidative stress and alterations of tricarboxylic acid cycle linked metabolic pathways compared with control neurons. Importantly, dopamine treatment of PD neurons promoted a rescue effect by increasing mitochondrial respiration, activating antioxidant stress response, and normalizing altered metabolite levels linked to mitochondrial function. These observations provide evidence that dopamine affects iron homeostasis, intracellular stress responses and mitochondrial function in healthy cells, while dopamine supplementation can restore the disturbed regulatory network in PD cells.
Collapse
Affiliation(s)
- Chiara Buoso
- Institute for Biomedicine, Eurac Research, 39100 Bolzano, Italy; Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Martin Lang
- Institute for Biomedicine, Eurac Research, 39100 Bolzano, Italy
| | - Corey M Griffith
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 4362 Belvaux, Luxembourg
| | - Begoña Talavera Andújar
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 4362 Belvaux, Luxembourg
| | | | - Christine Fischer
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | | | - Heribert Talasz
- Institute of Medical Biochemistry, Protein Core Facility, Biocenter Innsbruck, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | | | | | - Emma L Schymanski
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 4362 Belvaux, Luxembourg
| | - Irene Pichler
- Institute for Biomedicine, Eurac Research, 39100 Bolzano, Italy.
| | - Guenter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, 6020 Innsbruck, Austria.
| |
Collapse
|
3
|
Timoshev V, Haufe LA, Busse O, Hamedi H, Seifert M, Weigand JJ. Recycling of Spent FCC Catalysts: Conversion of Leached Residues to Zeolite ZSM-5. ChemSusChem 2024:e202301642. [PMID: 38462539 DOI: 10.1002/cssc.202301642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/12/2024]
Abstract
The commercial recycling of spent FCC catalyst typically focuses on recovering only 1-3 % of rare-earth elements, with the remaining residues often disposed of in landfills. Here, we present a novel method to close a recycling loop for spent FCC catalyst. The method involves a series of leaching steps: Firstly, the spent catalyst material is leached with HNO3 to remove rare-earth elements such as La; second, solvothermal leaching with HCl removes most of Al and impurities like Fe, Ni and V; finally, a third leaching with H2SO4 removes Ti. The solid residues are then used to synthesize ZSM-5 without the addition of any extra silicon or aluminum sources after mild activation. The impurities in the synthesis gel strongly modify the properties of the zeolite, with ZSM-5 crystals containing higher levels of impurities exhibiting lower crystallinities, surface areas, acidities, cracking activities, as well as larger particle sizes.
Collapse
Affiliation(s)
- Vladislav Timoshev
- Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, 01062, Dresden, Germany
| | - Liane A Haufe
- Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, 01062, Dresden, Germany
| | - Oliver Busse
- Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, 01062, Dresden, Germany
| | - Homa Hamedi
- Technische Universität Dresden, Process Systems Engineering Group, 01062, Dresden, Germany
| | - Markus Seifert
- Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, 01062, Dresden, Germany
| | - Jan J Weigand
- Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, 01062, Dresden, Germany
| |
Collapse
|
4
|
Grubwieser P, Brigo N, Seifert M, Grander M, Theurl I, Nairz M, Weiss G, Pfeifhofer-Obermair C. Quantification of Macrophage Cellular Ferrous Iron (Fe 2+) Content Using a Highly Specific Fluorescent Probe in a Plate Reader. Bio Protoc 2024; 14:e4929. [PMID: 38379830 PMCID: PMC10875354 DOI: 10.21769/bioprotoc.4929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/13/2023] [Accepted: 01/02/2024] [Indexed: 02/22/2024] Open
Abstract
Macrophages are at the center of innate immunity and iron metabolism. In the case of an infection, macrophages adapt their cellular iron metabolism to deprive iron from invading bacteria to combat intracellular bacterial proliferation. A concise evaluation of the cellular iron content upon an infection with bacterial pathogens and diverse cellular stimuli is necessary to identify underlying mechanisms concerning iron homeostasis in macrophages. For the characterization of cellular iron levels during infection, we established an in vitro infection model where the murine macrophage cell line J774A.1 is infected with Salmonella enterica serovar Typhimurium (S.tm), the mouse counterpart to S. enterica serovar Typhi, under normal and iron-overload conditions using ferric chloride (FeCl3) treatment. To evaluate the effect of infection and iron stimulation on cellular iron levels, the macrophages are stained with FerroOrange. This fluorescent probe specifically detects Fe2+ ions and its fluorescence can be quantified photometrically in a plate reader. Importantly, FerroOrange fluorescence does not increase with chelated iron or other bivalent metal ions. In this protocol, we present a simple and reliable method to quantify cellular Fe2+ levels in cultured macrophages by applying a highly specific fluorescence probe (FerroOrange) in a TECAN Spark microplate reader. Compared to already established techniques, our protocol allows assessing cellular iron levels in innate immune cells without the use of radioactive iron isotopes or extensive sample preparation, exposing the cells to stress. Key features • Easy quantification of Fe2+ in cultured macrophages with a fluorescent probe. • Analysis of iron in living cells without the need for fixation. • Performed on a plate reader capable of 540 nm excitation and 585 nm emission by trained employees for handling biosafety level 2 bacteria.
Collapse
Affiliation(s)
- Philipp Grubwieser
- Department of Internal Medicine II, Medical
University of Innsbruck, Innsbruck, Austria
| | - Natascha Brigo
- Department of Internal Medicine II, Medical
University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Medical
University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and
Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Manuel Grander
- Department of Internal Medicine II, Medical
University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and
Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Igor Theurl
- Department of Internal Medicine II, Medical
University of Innsbruck, Innsbruck, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Medical
University of Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Medical
University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and
Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | | |
Collapse
|
5
|
Staplin N, Haynes R, Judge PK, Wanner C, Green JB, Emberson J, Preiss D, Mayne KJ, Ng SYA, Sammons E, Zhu D, Hill M, Stevens W, Wallendszus K, Brenner S, Cheung AK, Liu ZH, Li J, Hooi LS, Liu WJ, Kadowaki T, Nangaku M, Levin A, Cherney D, Maggioni AP, Pontremoli R, Deo R, Goto S, Rossello X, Tuttle KR, Steubl D, Petrini M, Seidi S, Landray MJ, Baigent C, Herrington WG, Abat S, Abd Rahman R, Abdul Cader R, Abdul Hafidz MI, Abdul Wahab MZ, Abdullah NK, Abdul-Samad T, Abe M, Abraham N, Acheampong S, Achiri P, Acosta JA, Adeleke A, Adell V, Adewuyi-Dalton R, Adnan N, Africano A, Agharazii M, Aguilar F, Aguilera A, Ahmad M, Ahmad MK, Ahmad NA, Ahmad NH, Ahmad NI, Ahmad Miswan N, Ahmad Rosdi H, Ahmed I, Ahmed S, Ahmed S, Aiello J, Aitken A, AitSadi R, Aker S, Akimoto S, Akinfolarin A, Akram S, Alberici F, Albert C, Aldrich L, Alegata M, Alexander L, Alfaress S, Alhadj Ali M, Ali A, Ali A, Alicic R, Aliu A, Almaraz R, Almasarwah R, Almeida J, Aloisi A, Al-Rabadi L, Alscher D, Alvarez P, Al-Zeer B, Amat M, Ambrose C, Ammar H, An Y, Andriaccio L, Ansu K, Apostolidi A, Arai N, Araki H, Araki S, Arbi A, Arechiga O, Armstrong S, Arnold T, Aronoff S, Arriaga W, Arroyo J, Arteaga D, Asahara S, Asai A, Asai N, Asano S, Asawa M, Asmee MF, Aucella F, Augustin M, Avery A, Awad A, Awang IY, Awazawa M, Axler A, Ayub W, Azhari Z, Baccaro R, Badin C, Bagwell B, Bahlmann-Kroll E, Bahtar AZ, Baigent C, Bains D, Bajaj H, Baker R, Baldini E, Banas B, Banerjee D, Banno S, Bansal S, Barberi S, Barnes S, Barnini C, Barot C, Barrett K, Barrios R, Bartolomei Mecatti B, Barton I, Barton J, Basily W, Bavanandan S, Baxter A, Becker L, Beddhu S, Beige J, Beigh S, Bell S, Benck U, Beneat A, Bennett A, Bennett D, Benyon S, Berdeprado J, Bergler T, Bergner A, Berry M, Bevilacqua M, Bhairoo J, Bhandari S, Bhandary N, Bhatt A, Bhattarai M, Bhavsar M, Bian W, Bianchini F, Bianco S, Bilous R, Bilton J, Bilucaglia D, Bird C, Birudaraju D, Biscoveanu M, Blake C, Bleakley N, Bocchicchia K, Bodine S, Bodington R, Boedecker S, Bolduc M, Bolton S, Bond C, Boreky F, Boren K, Bouchi R, Bough L, Bovan D, Bowler C, Bowman L, Brar N, Braun C, Breach A, Breitenfeldt M, Brenner S, Brettschneider B, Brewer A, Brewer G, Brindle V, Brioni E, Brown C, Brown H, Brown L, Brown R, Brown S, Browne D, Bruce K, Brueckmann M, Brunskill N, Bryant M, Brzoska M, Bu Y, Buckman C, Budoff M, Bullen M, Burke A, Burnette S, Burston C, Busch M, Bushnell J, Butler S, Büttner C, Byrne C, Caamano A, Cadorna J, Cafiero C, Cagle M, Cai J, Calabrese K, Calvi C, Camilleri B, Camp S, Campbell D, Campbell R, Cao H, Capelli I, Caple M, Caplin B, Cardone A, Carle J, Carnall V, Caroppo M, Carr S, Carraro G, Carson M, Casares P, Castillo C, Castro C, Caudill B, Cejka V, Ceseri M, Cham L, Chamberlain A, Chambers J, Chan CBT, Chan JYM, Chan YC, Chang E, Chang E, Chant T, Chavagnon T, Chellamuthu P, Chen F, Chen J, Chen P, Chen TM, Chen Y, Chen Y, Cheng C, Cheng H, Cheng MC, Cherney D, Cheung AK, Ching CH, Chitalia N, Choksi R, Chukwu C, Chung K, Cianciolo G, Cipressa L, Clark S, Clarke H, Clarke R, Clarke S, Cleveland B, Cole E, Coles H, Condurache L, Connor A, Convery K, Cooper A, Cooper N, Cooper Z, Cooperman L, Cosgrove L, Coutts P, Cowley A, Craik R, Cui G, Cummins T, Dahl N, Dai H, Dajani L, D'Amelio A, Damian E, Damianik K, Danel L, Daniels C, Daniels T, Darbeau S, Darius H, Dasgupta T, Davies J, Davies L, Davis A, Davis J, Davis L, Dayanandan R, Dayi S, Dayrell R, De Nicola L, Debnath S, Deeb W, Degenhardt S, DeGoursey K, Delaney M, Deo R, DeRaad R, Derebail V, Dev D, Devaux M, Dhall P, Dhillon G, Dienes J, Dobre M, Doctolero E, Dodds V, Domingo D, Donaldson D, Donaldson P, Donhauser C, Donley V, Dorestin S, Dorey S, Doulton T, Draganova D, Draxlbauer K, Driver F, Du H, Dube F, Duck T, Dugal T, Dugas J, Dukka H, Dumann H, Durham W, Dursch M, Dykas R, Easow R, Eckrich E, Eden G, Edmerson E, Edwards H, Ee LW, Eguchi J, Ehrl Y, Eichstadt K, Eid W, Eilerman B, Ejima Y, Eldon H, Ellam T, Elliott L, Ellison R, Emberson J, Epp R, Er A, Espino-Obrero M, Estcourt S, Estienne L, Evans G, Evans J, Evans S, Fabbri G, Fajardo-Moser M, Falcone C, Fani F, Faria-Shayler P, Farnia F, Farrugia D, Fechter M, Fellowes D, Feng F, Fernandez J, Ferraro P, Field A, Fikry S, Finch J, Finn H, Fioretto P, Fish R, Fleischer A, Fleming-Brown D, Fletcher L, Flora R, Foellinger C, Foligno N, Forest S, Forghani Z, Forsyth K, Fottrell-Gould D, Fox P, Frankel A, Fraser D, Frazier R, Frederick K, Freking N, French H, Froment A, Fuchs B, Fuessl L, Fujii H, Fujimoto A, Fujita A, Fujita K, Fujita Y, Fukagawa M, Fukao Y, Fukasawa A, Fuller T, Funayama T, Fung E, Furukawa M, Furukawa Y, Furusho M, Gabel S, Gaidu J, Gaiser S, Gallo K, Galloway C, Gambaro G, Gan CC, Gangemi C, Gao M, Garcia K, Garcia M, Garofalo C, Garrity M, Garza A, Gasko S, Gavrila M, Gebeyehu B, Geddes A, Gentile G, George A, George J, Gesualdo L, Ghalli F, Ghanem A, Ghate T, Ghavampour S, Ghazi A, Gherman A, Giebeln-Hudnell U, Gill B, Gillham S, Girakossyan I, Girndt M, Giuffrida A, Glenwright M, Glider T, Gloria R, Glowski D, Goh BL, Goh CB, Gohda T, Goldenberg R, Goldfaden R, Goldsmith C, Golson B, Gonce V, Gong Q, Goodenough B, Goodwin N, Goonasekera M, Gordon A, Gordon J, Gore A, Goto H, Goto S, Goto S, Gowen D, Grace A, Graham J, Grandaliano G, Gray M, Green JB, Greene T, Greenwood G, Grewal B, Grifa R, Griffin D, Griffin S, Grimmer P, Grobovaite E, Grotjahn S, Guerini A, Guest C, Gunda S, Guo B, Guo Q, Haack S, Haase M, Haaser K, Habuki K, Hadley A, Hagan S, Hagge S, Haller H, Ham S, Hamal S, Hamamoto Y, Hamano N, Hamm M, Hanburry A, Haneda M, Hanf C, Hanif W, Hansen J, Hanson L, Hantel S, Haraguchi T, Harding E, Harding T, Hardy C, Hartner C, Harun Z, Harvill L, Hasan A, Hase H, Hasegawa F, Hasegawa T, Hashimoto A, Hashimoto C, Hashimoto M, Hashimoto S, Haskett S, Hauske SJ, Hawfield A, Hayami T, Hayashi M, Hayashi S, Haynes R, Hazara A, Healy C, Hecktman J, Heine G, Henderson H, Henschel R, Hepditch A, Herfurth K, Hernandez G, Hernandez Pena A, Hernandez-Cassis C, Herrington WG, Herzog C, Hewins S, Hewitt D, Hichkad L, Higashi S, Higuchi C, Hill C, Hill L, Hill M, Himeno T, Hing A, Hirakawa Y, Hirata K, Hirota Y, Hisatake T, Hitchcock S, Hodakowski A, Hodge W, Hogan R, Hohenstatt U, Hohenstein B, Hooi L, Hope S, Hopley M, Horikawa S, Hosein D, Hosooka T, Hou L, Hou W, Howie L, Howson A, Hozak M, Htet Z, Hu X, Hu Y, Huang J, Huda N, Hudig L, Hudson A, Hugo C, Hull R, Hume L, Hundei W, Hunt N, Hunter A, Hurley S, Hurst A, Hutchinson C, Hyo T, Ibrahim FH, Ibrahim S, Ihana N, Ikeda T, Imai A, Imamine R, Inamori A, Inazawa H, Ingell J, Inomata K, Inukai Y, Ioka M, Irtiza-Ali A, Isakova T, Isari W, Iselt M, Ishiguro A, Ishihara K, Ishikawa T, Ishimoto T, Ishizuka K, Ismail R, Itano S, Ito H, Ito K, Ito M, Ito Y, Iwagaitsu S, Iwaita Y, Iwakura T, Iwamoto M, Iwasa M, Iwasaki H, Iwasaki S, Izumi K, Izumi K, Izumi T, Jaafar SM, Jackson C, Jackson Y, Jafari G, Jahangiriesmaili M, Jain N, Jansson K, Jasim H, Jeffers L, Jenkins A, Jesky M, Jesus-Silva J, Jeyarajah D, Jiang Y, Jiao X, Jimenez G, Jin B, Jin Q, Jochims J, Johns B, Johnson C, Johnson T, Jolly S, Jones L, Jones L, Jones S, Jones T, Jones V, Joseph M, Joshi S, Judge P, Junejo N, Junus S, Kachele M, Kadowaki T, Kadoya H, Kaga H, Kai H, Kajio H, Kaluza-Schilling W, Kamaruzaman L, Kamarzarian A, Kamimura Y, Kamiya H, Kamundi C, Kan T, Kanaguchi Y, Kanazawa A, Kanda E, Kanegae S, Kaneko K, Kaneko K, Kang HY, Kano T, Karim M, Karounos D, Karsan W, Kasagi R, Kashihara N, Katagiri H, Katanosaka A, Katayama A, Katayama M, Katiman E, Kato K, Kato M, Kato N, Kato S, Kato T, Kato Y, Katsuda Y, Katsuno T, Kaufeld J, Kavak Y, Kawai I, Kawai M, Kawai M, Kawase A, Kawashima S, Kazory A, Kearney J, Keith B, Kellett J, Kelley S, Kershaw M, Ketteler M, Khai Q, Khairullah Q, Khandwala H, Khoo KKL, Khwaja A, Kidokoro K, Kielstein J, Kihara M, Kimber C, Kimura S, Kinashi H, Kingston H, Kinomura M, Kinsella-Perks E, Kitagawa M, Kitajima M, Kitamura S, Kiyosue A, Kiyota M, Klauser F, Klausmann G, Kmietschak W, Knapp K, Knight C, Knoppe A, Knott C, Kobayashi M, Kobayashi R, Kobayashi T, Koch M, Kodama S, Kodani N, Kogure E, Koizumi M, Kojima H, Kojo T, Kolhe N, Komaba H, Komiya T, Komori H, Kon SP, Kondo M, Kondo M, Kong W, Konishi M, Kono K, Koshino M, Kosugi T, Kothapalli B, Kozlowski T, Kraemer B, Kraemer-Guth A, Krappe J, Kraus D, Kriatselis C, Krieger C, Krish P, Kruger B, Ku Md Razi KR, Kuan Y, Kubota S, Kuhn S, Kumar P, Kume S, Kummer I, Kumuji R, Küpper A, Kuramae T, Kurian L, Kuribayashi C, Kurien R, Kuroda E, Kurose T, Kutschat A, Kuwabara N, Kuwata H, La Manna G, Lacey M, Lafferty K, LaFleur P, Lai V, Laity E, Lambert A, Landray MJ, Langlois M, Latif F, Latore E, Laundy E, Laurienti D, Lawson A, Lay M, Leal I, Leal I, Lee AK, Lee J, Lee KQ, Lee R, Lee SA, Lee YY, Lee-Barkey Y, Leonard N, Leoncini G, Leong CM, Lerario S, Leslie A, Levin A, Lewington A, Li J, Li N, Li X, Li Y, Liberti L, Liberti ME, Liew A, Liew YF, Lilavivat U, Lim SK, Lim YS, Limon E, Lin H, Lioudaki E, Liu H, Liu J, Liu L, Liu Q, Liu WJ, Liu X, Liu Z, Loader D, Lochhead H, Loh CL, Lorimer A, Loudermilk L, Loutan J, Low CK, Low CL, Low YM, Lozon Z, Lu Y, Lucci D, Ludwig U, Luker N, Lund D, Lustig R, Lyle S, Macdonald C, MacDougall I, Machicado R, MacLean D, Macleod P, Madera A, Madore F, Maeda K, Maegawa H, Maeno S, Mafham M, Magee J, Maggioni AP, Mah DY, Mahabadi V, Maiguma M, Makita Y, Makos G, Manco L, Mangiacapra R, Manley J, Mann P, Mano S, Marcotte G, Maris J, Mark P, Markau S, Markovic M, Marshall C, Martin M, Martinez C, Martinez S, Martins G, Maruyama K, Maruyama S, Marx K, Maselli A, Masengu A, Maskill A, Masumoto S, Masutani K, Matsumoto M, Matsunaga T, Matsuoka N, Matsushita M, Matthews M, Matthias S, Matvienko E, Maurer M, Maxwell P, Mayne KJ, Mazlan N, Mazlan SA, Mbuyisa A, McCafferty K, McCarroll F, McCarthy T, McClary-Wright C, McCray K, McDermott P, McDonald C, McDougall R, McHaffie E, McIntosh K, McKinley T, McLaughlin S, McLean N, McNeil L, Measor A, Meek J, Mehta A, Mehta R, Melandri M, Mené P, Meng T, Menne J, Merritt K, Merscher S, Meshykhi C, Messa P, Messinger L, Miftari N, Miller R, Miller Y, Miller-Hodges E, Minatoguchi M, Miners M, Minutolo R, Mita T, Miura Y, Miyaji M, Miyamoto S, Miyatsuka T, Miyazaki M, Miyazawa I, Mizumachi R, Mizuno M, Moffat S, Mohamad Nor FS, Mohamad Zaini SN, Mohamed Affandi FA, Mohandas C, Mohd R, Mohd Fauzi NA, Mohd Sharif NH, Mohd Yusoff Y, Moist L, Moncada A, Montasser M, Moon A, Moran C, Morgan N, Moriarty J, Morig G, Morinaga H, Morino K, Morisaki T, Morishita Y, Morlok S, Morris A, Morris F, Mostafa S, Mostefai Y, Motegi M, Motherwell N, Motta D, Mottl A, Moys R, Mozaffari S, Muir J, Mulhern J, Mulligan S, Munakata Y, Murakami C, Murakoshi M, Murawska A, Murphy K, Murphy L, Murray S, Murtagh H, Musa MA, Mushahar L, Mustafa R, Mustafar R, Muto M, Nadar E, Nagano R, Nagasawa T, Nagashima E, Nagasu H, Nagelberg S, Nair H, Nakagawa Y, Nakahara M, Nakamura J, Nakamura R, Nakamura T, Nakaoka M, Nakashima E, Nakata J, Nakata M, Nakatani S, Nakatsuka A, Nakayama Y, Nakhoul G, Nangaku M, Naverrete G, Navivala A, Nazeer I, Negrea L, Nethaji C, Newman E, Ng SYA, Ng TJ, Ngu LLS, Nimbkar T, Nishi H, Nishi M, Nishi S, Nishida Y, Nishiyama A, Niu J, Niu P, Nobili G, Nohara N, Nojima I, Nolan J, Nosseir H, Nozawa M, Nunn M, Nunokawa S, Oda M, Oe M, Oe Y, Ogane K, Ogawa W, Ogihara T, Oguchi G, Ohsugi M, Oishi K, Okada Y, Okajyo J, Okamoto S, Okamura K, Olufuwa O, Oluyombo R, Omata A, Omori Y, Ong LM, Ong YC, Onyema J, Oomatia A, Oommen A, Oremus R, Orimo Y, Ortalda V, Osaki Y, Osawa Y, Osmond Foster J, O'Sullivan A, Otani T, Othman N, Otomo S, O'Toole J, Owen L, Ozawa T, Padiyar A, Page N, Pajak S, Paliege A, Pandey A, Pandey R, Pariani H, Park J, Parrigon M, Passauer J, Patecki M, Patel M, Patel R, Patel T, Patel Z, Paul R, Paul R, Paulsen L, Pavone L, Peixoto A, Peji J, Peng BC, Peng K, Pennino L, Pereira E, Perez E, Pergola P, Pesce F, Pessolano G, Petchey W, Petr EJ, Pfab T, Phelan P, Phillips R, Phillips T, Phipps M, Piccinni G, Pickett T, Pickworth S, Piemontese M, Pinto D, Piper J, Plummer-Morgan J, Poehler D, Polese L, Poma V, Pontremoli R, Postal A, Pötz C, Power A, Pradhan N, Pradhan R, Preiss D, Preiss E, Preston K, Prib N, Price L, Provenzano C, Pugay C, Pulido R, Putz F, Qiao Y, Quartagno R, Quashie-Akponeware M, Rabara R, Rabasa-Lhoret R, Radhakrishnan D, Radley M, Raff R, Raguwaran S, Rahbari-Oskoui F, Rahman M, Rahmat K, Ramadoss S, Ramanaidu S, Ramasamy S, Ramli R, Ramli S, Ramsey T, Rankin A, Rashidi A, Raymond L, Razali WAFA, Read K, Reiner H, Reisler A, Reith C, Renner J, Rettenmaier B, Richmond L, Rijos D, Rivera R, Rivers V, Robinson H, Rocco M, Rodriguez-Bachiller I, Rodriquez R, Roesch C, Roesch J, Rogers J, Rohnstock M, Rolfsmeier S, Roman M, Romo A, Rosati A, Rosenberg S, Ross T, Rossello X, Roura M, Roussel M, Rovner S, Roy S, Rucker S, Rump L, Ruocco M, Ruse S, Russo F, Russo M, Ryder M, Sabarai A, Saccà C, Sachson R, Sadler E, Safiee NS, Sahani M, Saillant A, Saini J, Saito C, Saito S, Sakaguchi K, Sakai M, Salim H, Salviani C, Sammons E, Sampson A, Samson F, Sandercock P, Sanguila S, Santorelli G, Santoro D, Sarabu N, Saram T, Sardell R, Sasajima H, Sasaki T, Satko S, Sato A, Sato D, Sato H, Sato H, Sato J, Sato T, Sato Y, Satoh M, Sawada K, Schanz M, Scheidemantel F, Schemmelmann M, Schettler E, Schettler V, Schlieper GR, Schmidt C, Schmidt G, Schmidt U, Schmidt-Gurtler H, Schmude M, Schneider A, Schneider I, Schneider-Danwitz C, Schomig M, Schramm T, Schreiber A, Schricker S, Schroppel B, Schulte-Kemna L, Schulz E, Schumacher B, Schuster A, Schwab A, Scolari F, Scott A, Seeger W, Seeger W, Segal M, Seifert L, Seifert M, Sekiya M, Sellars R, Seman MR, Shah S, Shah S, Shainberg L, Shanmuganathan M, Shao F, Sharma K, Sharpe C, Sheikh-Ali M, Sheldon J, Shenton C, Shepherd A, Shepperd M, Sheridan R, Sheriff Z, Shibata Y, Shigehara T, Shikata K, Shimamura K, Shimano H, Shimizu Y, Shimoda H, Shin K, Shivashankar G, Shojima N, Silva R, Sim CSB, Simmons K, Sinha S, Sitter T, Sivanandam S, Skipper M, Sloan K, Sloan L, Smith R, Smyth J, Sobande T, Sobata M, Somalanka S, Song X, Sonntag F, Sood B, Sor SY, Soufer J, Sparks H, Spatoliatore G, Spinola T, Squyres S, Srivastava A, Stanfield J, Staplin N, Staylor K, Steele A, Steen O, Steffl D, Stegbauer J, Stellbrink C, Stellbrink E, Stevens W, Stevenson A, Stewart-Ray V, Stickley J, Stoffler D, Stratmann B, Streitenberger S, Strutz F, Stubbs J, Stumpf J, Suazo N, Suchinda P, Suckling R, Sudin A, Sugamori K, Sugawara H, Sugawara K, Sugimoto D, Sugiyama H, Sugiyama H, Sugiyama T, Sullivan M, Sumi M, Suresh N, Sutton D, Suzuki H, Suzuki R, Suzuki Y, Suzuki Y, Suzuki Y, Swanson E, Swift P, Syed S, Szerlip H, Taal M, Taddeo M, Tailor C, Tajima K, Takagi M, Takahashi K, Takahashi K, Takahashi M, Takahashi T, Takahira E, Takai T, Takaoka M, Takeoka J, Takesada A, Takezawa M, Talbot M, Taliercio J, Talsania T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
Collapse
|
6
|
Judge PK, Staplin N, Mayne KJ, Wanner C, Green JB, Hauske SJ, Emberson JR, Preiss D, Ng SYA, Roddick AJ, Sammons E, Zhu D, Hill M, Stevens W, Wallendszus K, Brenner S, Cheung AK, Liu ZH, Li J, Hooi LS, Liu WJ, Kadowaki T, Nangaku M, Levin A, Cherney D, Maggioni AP, Pontremoli R, Deo R, Goto S, Rossello X, Tuttle KR, Steubl D, Massey D, Landray MJ, Baigent C, Haynes R, Herrington WG, Abat S, Abd Rahman R, Abdul Cader R, Abdul Hafidz MI, Abdul Wahab MZ, Abdullah NK, Abdul-Samad T, Abe M, Abraham N, Acheampong S, Achiri P, Acosta JA, Adeleke A, Adell V, Adewuyi-Dalton R, Adnan N, Africano A, Agharazii M, Aguilar F, Aguilera A, Ahmad M, Ahmad MK, Ahmad NA, Ahmad NH, Ahmad NI, Ahmad Miswan N, Ahmad Rosdi H, Ahmed I, Ahmed S, Ahmed S, Aiello J, Aitken A, AitSadi R, Aker S, Akimoto S, Akinfolarin A, Akram S, Alberici F, Albert C, Aldrich L, Alegata M, Alexander L, Alfaress S, Alhadj Ali M, Ali A, Ali A, Alicic R, Aliu A, Almaraz R, Almasarwah R, Almeida J, Aloisi A, Al-Rabadi L, Alscher D, Alvarez P, Al-Zeer B, Amat M, Ambrose C, Ammar H, An Y, Andriaccio L, Ansu K, Apostolidi A, Arai N, Araki H, Araki S, Arbi A, Arechiga O, Armstrong S, Arnold T, Aronoff S, Arriaga W, Arroyo J, Arteaga D, Asahara S, Asai A, Asai N, Asano S, Asawa M, Asmee MF, Aucella F, Augustin M, Avery A, Awad A, Awang IY, Awazawa M, Axler A, Ayub W, Azhari Z, Baccaro R, Badin C, Bagwell B, Bahlmann-Kroll E, Bahtar AZ, Baigent C, Bains D, Bajaj H, Baker R, Baldini E, Banas B, Banerjee D, Banno S, Bansal S, Barberi S, Barnes S, Barnini C, Barot C, Barrett K, Barrios R, Bartolomei Mecatti B, Barton I, Barton J, Basily W, Bavanandan S, Baxter A, Becker L, Beddhu S, Beige J, Beigh S, Bell S, Benck U, Beneat A, Bennett A, Bennett D, Benyon S, Berdeprado J, Bergler T, Bergner A, Berry M, Bevilacqua M, Bhairoo J, Bhandari S, Bhandary N, Bhatt A, Bhattarai M, Bhavsar M, Bian W, Bianchini F, Bianco S, Bilous R, Bilton J, Bilucaglia D, Bird C, Birudaraju D, Biscoveanu M, Blake C, Bleakley N, Bocchicchia K, Bodine S, Bodington R, Boedecker S, Bolduc M, Bolton S, Bond C, Boreky F, Boren K, Bouchi R, Bough L, Bovan D, Bowler C, Bowman L, Brar N, Braun C, Breach A, Breitenfeldt M, Brenner S, Brettschneider B, Brewer A, Brewer G, Brindle V, Brioni E, Brown C, Brown H, Brown L, Brown R, Brown S, Browne D, Bruce K, Brueckmann M, Brunskill N, Bryant M, Brzoska M, Bu Y, Buckman C, Budoff M, Bullen M, Burke A, Burnette S, Burston C, Busch M, Bushnell J, Butler S, Büttner C, Byrne C, Caamano A, Cadorna J, Cafiero C, Cagle M, Cai J, Calabrese K, Calvi C, Camilleri B, Camp S, Campbell D, Campbell R, Cao H, Capelli I, Caple M, Caplin B, Cardone A, Carle J, Carnall V, Caroppo M, Carr S, Carraro G, Carson M, Casares P, Castillo C, Castro C, Caudill B, Cejka V, Ceseri M, Cham L, Chamberlain A, Chambers J, Chan CBT, Chan JYM, Chan YC, Chang E, Chang E, Chant T, Chavagnon T, Chellamuthu P, Chen F, Chen J, Chen P, Chen TM, Chen Y, Chen Y, Cheng C, Cheng H, Cheng MC, Cherney D, Cheung AK, Ching CH, Chitalia N, Choksi R, Chukwu C, Chung K, Cianciolo G, Cipressa L, Clark S, Clarke H, Clarke R, Clarke S, Cleveland B, Cole E, Coles H, Condurache L, Connor A, Convery K, Cooper A, Cooper N, Cooper Z, Cooperman L, Cosgrove L, Coutts P, Cowley A, Craik R, Cui G, Cummins T, Dahl N, Dai H, Dajani L, D'Amelio A, Damian E, Damianik K, Danel L, Daniels C, Daniels T, Darbeau S, Darius H, Dasgupta T, Davies J, Davies L, Davis A, Davis J, Davis L, Dayanandan R, Dayi S, Dayrell R, De Nicola L, Debnath S, Deeb W, Degenhardt S, DeGoursey K, Delaney M, Deo R, DeRaad R, Derebail V, Dev D, Devaux M, Dhall P, Dhillon G, Dienes J, Dobre M, Doctolero E, Dodds V, Domingo D, Donaldson D, Donaldson P, Donhauser C, Donley V, Dorestin S, Dorey S, Doulton T, Draganova D, Draxlbauer K, Driver F, Du H, Dube F, Duck T, Dugal T, Dugas J, Dukka H, Dumann H, Durham W, Dursch M, Dykas R, Easow R, Eckrich E, Eden G, Edmerson E, Edwards H, Ee LW, Eguchi J, Ehrl Y, Eichstadt K, Eid W, Eilerman B, Ejima Y, Eldon H, Ellam T, Elliott L, Ellison R, Emberson J, Epp R, Er A, Espino-Obrero M, Estcourt S, Estienne L, Evans G, Evans J, Evans S, Fabbri G, Fajardo-Moser M, Falcone C, Fani F, Faria-Shayler P, Farnia F, Farrugia D, Fechter M, Fellowes D, Feng F, Fernandez J, Ferraro P, Field A, Fikry S, Finch J, Finn H, Fioretto P, Fish R, Fleischer A, Fleming-Brown D, Fletcher L, Flora R, Foellinger C, Foligno N, Forest S, Forghani Z, Forsyth K, Fottrell-Gould D, Fox P, Frankel A, Fraser D, Frazier R, Frederick K, Freking N, French H, Froment A, Fuchs B, Fuessl L, Fujii H, Fujimoto A, Fujita A, Fujita K, Fujita Y, Fukagawa M, Fukao Y, Fukasawa A, Fuller T, Funayama T, Fung E, Furukawa M, Furukawa Y, Furusho M, Gabel S, Gaidu J, Gaiser S, Gallo K, Galloway C, Gambaro G, Gan CC, Gangemi C, Gao M, Garcia K, Garcia M, Garofalo C, Garrity M, Garza A, Gasko S, Gavrila M, Gebeyehu B, Geddes A, Gentile G, George A, George J, Gesualdo L, Ghalli F, Ghanem A, Ghate T, Ghavampour S, Ghazi A, Gherman A, Giebeln-Hudnell U, Gill B, Gillham S, Girakossyan I, Girndt M, Giuffrida A, Glenwright M, Glider T, Gloria R, Glowski D, Goh BL, Goh CB, Gohda T, Goldenberg R, Goldfaden R, Goldsmith C, Golson B, Gonce V, Gong Q, Goodenough B, Goodwin N, Goonasekera M, Gordon A, Gordon J, Gore A, Goto H, Goto S, Goto S, Gowen D, Grace A, Graham J, Grandaliano G, Gray M, Green JB, Greene T, Greenwood G, Grewal B, Grifa R, Griffin D, Griffin S, Grimmer P, Grobovaite E, Grotjahn S, Guerini A, Guest C, Gunda S, Guo B, Guo Q, Haack S, Haase M, Haaser K, Habuki K, Hadley A, Hagan S, Hagge S, Haller H, Ham S, Hamal S, Hamamoto Y, Hamano N, Hamm M, Hanburry A, Haneda M, Hanf C, Hanif W, Hansen J, Hanson L, Hantel S, Haraguchi T, Harding E, Harding T, Hardy C, Hartner C, Harun Z, Harvill L, Hasan A, Hase H, Hasegawa F, Hasegawa T, Hashimoto A, Hashimoto C, Hashimoto M, Hashimoto S, Haskett S, Hauske SJ, Hawfield A, Hayami T, Hayashi M, Hayashi S, Haynes R, Hazara A, Healy C, Hecktman J, Heine G, Henderson H, Henschel R, Hepditch A, Herfurth K, Hernandez G, Hernandez Pena A, Hernandez-Cassis C, Herrington WG, Herzog C, Hewins S, Hewitt D, Hichkad L, Higashi S, Higuchi C, Hill C, Hill L, Hill M, Himeno T, Hing A, Hirakawa Y, Hirata K, Hirota Y, Hisatake T, Hitchcock S, Hodakowski A, Hodge W, Hogan R, Hohenstatt U, Hohenstein B, Hooi L, Hope S, Hopley M, Horikawa S, Hosein D, Hosooka T, Hou L, Hou W, Howie L, Howson A, Hozak M, Htet Z, Hu X, Hu Y, Huang J, Huda N, Hudig L, Hudson A, Hugo C, Hull R, Hume L, Hundei W, Hunt N, Hunter A, Hurley S, Hurst A, Hutchinson C, Hyo T, Ibrahim FH, Ibrahim S, Ihana N, Ikeda T, Imai A, Imamine R, Inamori A, Inazawa H, Ingell J, Inomata K, Inukai Y, Ioka M, Irtiza-Ali A, Isakova T, Isari W, Iselt M, Ishiguro A, Ishihara K, Ishikawa T, Ishimoto T, Ishizuka K, Ismail R, Itano S, Ito H, Ito K, Ito M, Ito Y, Iwagaitsu S, Iwaita Y, Iwakura T, Iwamoto M, Iwasa M, Iwasaki H, Iwasaki S, Izumi K, Izumi K, Izumi T, Jaafar SM, Jackson C, Jackson Y, Jafari G, Jahangiriesmaili M, Jain N, Jansson K, Jasim H, Jeffers L, Jenkins A, Jesky M, Jesus-Silva J, Jeyarajah D, Jiang Y, Jiao X, Jimenez G, Jin B, Jin Q, Jochims J, Johns B, Johnson C, Johnson T, Jolly S, Jones L, Jones L, Jones S, Jones T, Jones V, Joseph M, Joshi S, Judge P, Junejo N, Junus S, Kachele M, Kadowaki T, Kadoya H, Kaga H, Kai H, Kajio H, Kaluza-Schilling W, Kamaruzaman L, Kamarzarian A, Kamimura Y, Kamiya H, Kamundi C, Kan T, Kanaguchi Y, Kanazawa A, Kanda E, Kanegae S, Kaneko K, Kaneko K, Kang HY, Kano T, Karim M, Karounos D, Karsan W, Kasagi R, Kashihara N, Katagiri H, Katanosaka A, Katayama A, Katayama M, Katiman E, Kato K, Kato M, Kato N, Kato S, Kato T, Kato Y, Katsuda Y, Katsuno T, Kaufeld J, Kavak Y, Kawai I, Kawai M, Kawai M, Kawase A, Kawashima S, Kazory A, Kearney J, Keith B, Kellett J, Kelley S, Kershaw M, Ketteler M, Khai Q, Khairullah Q, Khandwala H, Khoo KKL, Khwaja A, Kidokoro K, Kielstein J, Kihara M, Kimber C, Kimura S, Kinashi H, Kingston H, Kinomura M, Kinsella-Perks E, Kitagawa M, Kitajima M, Kitamura S, Kiyosue A, Kiyota M, Klauser F, Klausmann G, Kmietschak W, Knapp K, Knight C, Knoppe A, Knott C, Kobayashi M, Kobayashi R, Kobayashi T, Koch M, Kodama S, Kodani N, Kogure E, Koizumi M, Kojima H, Kojo T, Kolhe N, Komaba H, Komiya T, Komori H, Kon SP, Kondo M, Kondo M, Kong W, Konishi M, Kono K, Koshino M, Kosugi T, Kothapalli B, Kozlowski T, Kraemer B, Kraemer-Guth A, Krappe J, Kraus D, Kriatselis C, Krieger C, Krish P, Kruger B, Ku Md Razi KR, Kuan Y, Kubota S, Kuhn S, Kumar P, Kume S, Kummer I, Kumuji R, Küpper A, Kuramae T, Kurian L, Kuribayashi C, Kurien R, Kuroda E, Kurose T, Kutschat A, Kuwabara N, Kuwata H, La Manna G, Lacey M, Lafferty K, LaFleur P, Lai V, Laity E, Lambert A, Landray MJ, Langlois M, Latif F, Latore E, Laundy E, Laurienti D, Lawson A, Lay M, Leal I, Leal I, Lee AK, Lee J, Lee KQ, Lee R, Lee SA, Lee YY, Lee-Barkey Y, Leonard N, Leoncini G, Leong CM, Lerario S, Leslie A, Levin A, Lewington A, Li J, Li N, Li X, Li Y, Liberti L, Liberti ME, Liew A, Liew YF, Lilavivat U, Lim SK, Lim YS, Limon E, Lin H, Lioudaki E, Liu H, Liu J, Liu L, Liu Q, Liu WJ, Liu X, Liu Z, Loader D, Lochhead H, Loh CL, Lorimer A, Loudermilk L, Loutan J, Low CK, Low CL, Low YM, Lozon Z, Lu Y, Lucci D, Ludwig U, Luker N, Lund D, Lustig R, Lyle S, Macdonald C, MacDougall I, Machicado R, MacLean D, Macleod P, Madera A, Madore F, Maeda K, Maegawa H, Maeno S, Mafham M, Magee J, Maggioni AP, Mah DY, Mahabadi V, Maiguma M, Makita Y, Makos G, Manco L, Mangiacapra R, Manley J, Mann P, Mano S, Marcotte G, Maris J, Mark P, Markau S, Markovic M, Marshall C, Martin M, Martinez C, Martinez S, Martins G, Maruyama K, Maruyama S, Marx K, Maselli A, Masengu A, Maskill A, Masumoto S, Masutani K, Matsumoto M, Matsunaga T, Matsuoka N, Matsushita M, Matthews M, Matthias S, Matvienko E, Maurer M, Maxwell P, Mayne KJ, Mazlan N, Mazlan SA, Mbuyisa A, McCafferty K, McCarroll F, McCarthy T, McClary-Wright C, McCray K, McDermott P, McDonald C, McDougall R, McHaffie E, McIntosh K, McKinley T, McLaughlin S, McLean N, McNeil L, Measor A, Meek J, Mehta A, Mehta R, Melandri M, Mené P, Meng T, Menne J, Merritt K, Merscher S, Meshykhi C, Messa P, Messinger L, Miftari N, Miller R, Miller Y, Miller-Hodges E, Minatoguchi M, Miners M, Minutolo R, Mita T, Miura Y, Miyaji M, Miyamoto S, Miyatsuka T, Miyazaki M, Miyazawa I, Mizumachi R, Mizuno M, Moffat S, Mohamad Nor FS, Mohamad Zaini SN, Mohamed Affandi FA, Mohandas C, Mohd R, Mohd Fauzi NA, Mohd Sharif NH, Mohd Yusoff Y, Moist L, Moncada A, Montasser M, Moon A, Moran C, Morgan N, Moriarty J, Morig G, Morinaga H, Morino K, Morisaki T, Morishita Y, Morlok S, Morris A, Morris F, Mostafa S, Mostefai Y, Motegi M, Motherwell N, Motta D, Mottl A, Moys R, Mozaffari S, Muir J, Mulhern J, Mulligan S, Munakata Y, Murakami C, Murakoshi M, Murawska A, Murphy K, Murphy L, Murray S, Murtagh H, Musa MA, Mushahar L, Mustafa R, Mustafar R, Muto M, Nadar E, Nagano R, Nagasawa T, Nagashima E, Nagasu H, Nagelberg S, Nair H, Nakagawa Y, Nakahara M, Nakamura J, Nakamura R, Nakamura T, Nakaoka M, Nakashima E, Nakata J, Nakata M, Nakatani S, Nakatsuka A, Nakayama Y, Nakhoul G, Nangaku M, Naverrete G, Navivala A, Nazeer I, Negrea L, Nethaji C, Newman E, Ng SYA, Ng TJ, Ngu LLS, Nimbkar T, Nishi H, Nishi M, Nishi S, Nishida Y, Nishiyama A, Niu J, Niu P, Nobili G, Nohara N, Nojima I, Nolan J, Nosseir H, Nozawa M, Nunn M, Nunokawa S, Oda M, Oe M, Oe Y, Ogane K, Ogawa W, Ogihara T, Oguchi G, Ohsugi M, Oishi K, Okada Y, Okajyo J, Okamoto S, Okamura K, Olufuwa O, Oluyombo R, Omata A, Omori Y, Ong LM, Ong YC, Onyema J, Oomatia A, Oommen A, Oremus R, Orimo Y, Ortalda V, Osaki Y, Osawa Y, Osmond Foster J, O'Sullivan A, Otani T, Othman N, Otomo S, O'Toole J, Owen L, Ozawa T, Padiyar A, Page N, Pajak S, Paliege A, Pandey A, Pandey R, Pariani H, Park J, Parrigon M, Passauer J, Patecki M, Patel M, Patel R, Patel T, Patel Z, Paul R, Paul R, Paulsen L, Pavone L, Peixoto A, Peji J, Peng BC, Peng K, Pennino L, Pereira E, Perez E, Pergola P, Pesce F, Pessolano G, Petchey W, Petr EJ, Pfab T, Phelan P, Phillips R, Phillips T, Phipps M, Piccinni G, Pickett T, Pickworth S, Piemontese M, Pinto D, Piper J, Plummer-Morgan J, Poehler D, Polese L, Poma V, Pontremoli R, Postal A, Pötz C, Power A, Pradhan N, Pradhan R, Preiss D, Preiss E, Preston K, Prib N, Price L, Provenzano C, Pugay C, Pulido R, Putz F, Qiao Y, Quartagno R, Quashie-Akponeware M, Rabara R, Rabasa-Lhoret R, Radhakrishnan D, Radley M, Raff R, Raguwaran S, Rahbari-Oskoui F, Rahman M, Rahmat K, Ramadoss S, Ramanaidu S, Ramasamy S, Ramli R, Ramli S, Ramsey T, Rankin A, Rashidi A, Raymond L, Razali WAFA, Read K, Reiner H, Reisler A, Reith C, Renner J, Rettenmaier B, Richmond L, Rijos D, Rivera R, Rivers V, Robinson H, Rocco M, Rodriguez-Bachiller I, Rodriquez R, Roesch C, Roesch J, Rogers J, Rohnstock M, Rolfsmeier S, Roman M, Romo A, Rosati A, Rosenberg S, Ross T, Rossello X, Roura M, Roussel M, Rovner S, Roy S, Rucker S, Rump L, Ruocco M, Ruse S, Russo F, Russo M, Ryder M, Sabarai A, Saccà C, Sachson R, Sadler E, Safiee NS, Sahani M, Saillant A, Saini J, Saito C, Saito S, Sakaguchi K, Sakai M, Salim H, Salviani C, Sammons E, Sampson A, Samson F, Sandercock P, Sanguila S, Santorelli G, Santoro D, Sarabu N, Saram T, Sardell R, Sasajima H, Sasaki T, Satko S, Sato A, Sato D, Sato H, Sato H, Sato J, Sato T, Sato Y, Satoh M, Sawada K, Schanz M, Scheidemantel F, Schemmelmann M, Schettler E, Schettler V, Schlieper GR, Schmidt C, Schmidt G, Schmidt U, Schmidt-Gurtler H, Schmude M, Schneider A, Schneider I, Schneider-Danwitz C, Schomig M, Schramm T, Schreiber A, Schricker S, Schroppel B, Schulte-Kemna L, Schulz E, Schumacher B, Schuster A, Schwab A, Scolari F, Scott A, Seeger W, Seeger W, Segal M, Seifert L, Seifert M, Sekiya M, Sellars R, Seman MR, Shah S, Shah S, Shainberg L, Shanmuganathan M, Shao F, Sharma K, Sharpe C, Sheikh-Ali M, Sheldon J, Shenton C, Shepherd A, Shepperd M, Sheridan R, Sheriff Z, Shibata Y, Shigehara T, Shikata K, Shimamura K, Shimano H, Shimizu Y, Shimoda H, Shin K, Shivashankar G, Shojima N, Silva R, Sim CSB, Simmons K, Sinha S, Sitter T, Sivanandam S, Skipper M, Sloan K, Sloan L, Smith R, Smyth J, Sobande T, Sobata M, Somalanka S, Song X, Sonntag F, Sood B, Sor SY, Soufer J, Sparks H, Spatoliatore G, Spinola T, Squyres S, Srivastava A, Stanfield J, Staplin N, Staylor K, Steele A, Steen O, Steffl D, Stegbauer J, Stellbrink C, Stellbrink E, Stevens W, Stevenson A, Stewart-Ray V, Stickley J, Stoffler D, Stratmann B, Streitenberger S, Strutz F, Stubbs J, Stumpf J, Suazo N, Suchinda P, Suckling R, Sudin A, Sugamori K, Sugawara H, Sugawara K, Sugimoto D, Sugiyama H, Sugiyama H, Sugiyama T, Sullivan M, Sumi M, Suresh N, Sutton D, Suzuki H, Suzuki R, Suzuki Y, Suzuki Y, Suzuki Y, Swanson E, Swift P, Syed S, Szerlip H, Taal M, Taddeo M, Tailor C, Tajima K, Takagi M, Takahashi K, Takahashi K, Takahashi M, Takahashi T, Takahira E, Takai T, Takaoka M, Takeoka J, Takesada A, Takezawa M, Talbot M, Taliercio J, Talsania T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
Collapse
|
7
|
Grubwieser P, Hilbe R, Gehrer CM, Grander M, Brigo N, Hoffmann A, Seifert M, Berger S, Theurl I, Nairz M, Weiss G. Klebsiella pneumoniae manipulates human macrophages to acquire iron. Front Microbiol 2023; 14:1223113. [PMID: 37637102 PMCID: PMC10451090 DOI: 10.3389/fmicb.2023.1223113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/17/2023] [Indexed: 08/29/2023] Open
Abstract
Background Klebsiella pneumoniae (KP) is a major cause of hospital-acquired infections, such as pneumonia. Moreover, it is classified as a pathogen of concern due to sprawling anti-microbial resistance. During infection, the gram-negative pathogen is capable of establishing an intracellular niche in macrophages by altering cellular metabolism. One factor critically affecting the host-pathogen interaction is the availability of essential nutrients, like iron, which is required for KP to proliferate but which also modulates anti-microbial immune effector pathways. We hypothesized, that KP manipulates macrophage iron homeostasis to acquire this crucial nutrient for sustained proliferation. Methods We applied an in-vitro infection model, in which human macrophage-like PMA-differentiated THP1 cells were infected with KP (strain ATCC 43816). During a 24-h course of infection, we quantified the number of intracellular bacteria via serial plating of cell lysates and evaluated the effects of different stimuli on intracellular bacterial numbers and iron acquisition. Furthermore, we analyzed host and pathogen specific gene and protein expression of key iron metabolism molecules. Results Viable bacteria are recovered from macrophage cell lysates during the course of infection, indicative of persistence of bacteria within host cells and inefficient pathogen clearing by macrophages. Strikingly, following KP infection macrophages strongly induce the expression of the main cellular iron importer transferrin-receptor-1 (TFR1). Accordingly, intracellular KP proliferation is further augmented by the addition of iron loaded transferrin. The induction of TFR1 is mediated via the STAT-6-IL-10 axis, and pharmacological inhibition of this pathway reduces macrophage iron uptake, elicits bacterial iron starvation, and decreases bacterial survival. Conclusion Our results suggest, that KP manipulates macrophage iron metabolism to acquire iron once confined inside the host cell and enforces intracellular bacterial persistence. This is facilitated by microbial mediated induction of TFR1 via the STAT-6-IL-10 axis. Mechanistic insights into immune metabolism will provide opportunities for the development of novel antimicrobial therapies.
Collapse
Affiliation(s)
- Philipp Grubwieser
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
| | - Clemens Michael Gehrer
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
| | - Manuel Grander
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Natascha Brigo
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
| | - Alexander Hoffmann
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Sylvia Berger
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
| | - Igor Theurl
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pulmonology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| |
Collapse
|
8
|
Brigo N, Neumaier E, Pfeifhofer-Obermair C, Grubwieser P, Engl S, Berger S, Seifert M, Reinstadler V, Oberacher H, Weiss G. Timing of Interleukin-4 Stimulation of Macrophages Determines Their Anti-Microbial Activity during Infection with Salmonella enterica Serovar Typhimurium. Cells 2023; 12:1164. [PMID: 37190073 PMCID: PMC10137269 DOI: 10.3390/cells12081164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/06/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023] Open
Abstract
Priming of macrophages with interferon-gamma (IFNγ) or interleukin-4 (IL-4) leads to polarisation into pro-inflammatory or anti-inflammatory subtypes, which produce key enzymes such as inducible nitric oxide synthase (iNOS) and arginase 1 (ARG1), respectively, and in this way determine host responses to infection. Importantly, L-arginine is the substrate for both enzymes. ARG1 upregulation is associated with increased pathogen load in different infection models. However, while differentiation of macrophages with IL-4 impairs host resistance to the intracellular bacterium Salmonella enterica serovar Typhimurium (S.tm), little is known on the effects of IL-4 on unpolarised macrophages during infection. Therefore, bone-marrow-derived macrophages (BMDM) from C57BL/6N, Tie2Cre+/-ARG1fl/fl (KO), Tie2Cre-/-ARG1fl/fl (WT) mice were infected with S.tm in the undifferentiated state and then stimulated with IL-4 or IFNγ. In addition, BMDM of C57BL/6N mice were first polarised upon stimulation with IL-4 or IFNγ and then infected with S.tm. Interestingly, in contrast to polarisation of BMDM with IL-4 prior to infection, treatment of non-polarised S.tm-infected BMDM with IL-4 resulted in improved infection control whereas stimulation with IFNγ led to an increase in intracellular bacterial numbers compared to unstimulated controls. This effect of IL-4 was paralleled by decreased ARG1 levels and increased iNOS expression. Furthermore, the L-arginine pathway metabolites ornithine and polyamines were enriched in unpolarised cells infected with S.tm and stimulated with IL-4. Depletion of L-arginine reversed the protective effect of IL-4 toward infection control. Our data show that stimulation of S.tm-infected macrophages with IL-4 reduced bacterial multiplication via metabolic re-programming of L-arginine-dependent pathways.
Collapse
Affiliation(s)
- Natascha Brigo
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Emely Neumaier
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Christa Pfeifhofer-Obermair
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Philipp Grubwieser
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Sabine Engl
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Sylvia Berger
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Vera Reinstadler
- Institute of Legal Medicine and Core Facility Metabolomics, Medical University of Innsbruck, Muellerstrasse 44, 6020 Innsbruck, Austria
| | - Herbert Oberacher
- Institute of Legal Medicine and Core Facility Metabolomics, Medical University of Innsbruck, Muellerstrasse 44, 6020 Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| |
Collapse
|
9
|
Gollmann-Tepeköylü C, Graber M, Hirsch J, Mair S, Naschberger A, Pölzl L, Nägele F, Kirchmair E, Degenhart G, Demetz E, Hilbe R, Chen HY, Engert JC, Böhm A, Franz N, Lobenwein D, Lener D, Fuchs C, Weihs A, Töchterle S, Vogel GF, Schweiger V, Eder J, Pietschmann P, Seifert M, Kronenberg F, Coassin S, Blumer M, Hackl H, Meyer D, Feuchtner G, Kirchmair R, Troppmair J, Krane M, Weiss G, Tsimikas S, Thanassoulis G, Grimm M, Rupp B, Huber LA, Zhang SY, Casanova JL, Tancevski I, Holfeld J. Toll-Like Receptor 3 Mediates Aortic Stenosis Through a Conserved Mechanism of Calcification. Circulation 2023; 147:1518-1533. [PMID: 37013819 DOI: 10.1161/circulationaha.122.063481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
BACKGROUND Calcific aortic valve disease (CAVD) is characterized by a phenotypic switch of valvular interstitial cells to bone-forming cells. Toll-like receptors (TLRs) are evolutionarily conserved pattern recognition receptors at the interface between innate immunity and tissue repair. Type I interferons (IFNs) are not only crucial for an adequate antiviral response but also implicated in bone formation. We hypothesized that the accumulation of endogenous TLR3 ligands in the valvular leaflets may promote the generation of osteoblast-like cells through enhanced type I IFN signaling. METHODS Human valvular interstitial cells isolated from aortic valves were challenged with mechanical strain or synthetic TLR3 agonists and analyzed for bone formation, gene expression profiles, and IFN signaling pathways. Different inhibitors were used to delineate the engaged signaling pathways. Moreover, we screened a variety of potential lipids and proteoglycans known to accumulate in CAVD lesions as potential TLR3 ligands. Ligand-receptor interactions were characterized by in silico modeling and verified through immunoprecipitation experiments. Biglycan (Bgn), Tlr3, and IFN-α/β receptor alpha chain (Ifnar1)-deficient mice and a specific zebrafish model were used to study the implication of the byglycan (BGN)-TLR3-IFN axis in both CAVD and bone formation in vivo. Two large-scale cohorts (GERA [Genetic Epidemiology Research on Adult Health and Aging], n=55 192 with 3469 aortic stenosis cases; UK Biobank, n=257 231 with 2213 aortic stenosis cases) were examined for genetic variation at genes implicated in BGN-TLR3-IFN signaling associating with CAVD in humans. RESULTS Here, we identify TLR3 as a central molecular regulator of calcification in valvular interstitial cells and unravel BGN as a new endogenous agonist of TLR3. Posttranslational BGN maturation by xylosyltransferase 1 (XYLT1) is required for TLR3 activation. Moreover, BGN induces the transdifferentiation of valvular interstitial cells into bone-forming osteoblasts through the TLR3-dependent induction of type I IFNs. It is intriguing that Bgn-/-, Tlr3-/-, and Ifnar1-/- mice are protected against CAVD and display impaired bone formation. Meta-analysis of 2 large-scale cohorts with >300 000 individuals reveals that genetic variation at loci relevant to the XYLT1-BGN-TLR3-interferon-α/β receptor alpha chain (IFNAR) 1 pathway is associated with CAVD in humans. CONCLUSIONS This study identifies the BGN-TLR3-IFNAR1 axis as an evolutionarily conserved pathway governing calcification of the aortic valve and reveals a potential therapeutic target to prevent CAVD.
Collapse
Affiliation(s)
- Can Gollmann-Tepeköylü
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Michael Graber
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Jakob Hirsch
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Sophia Mair
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Andreas Naschberger
- Institute of Genetic Epidemiology, Department of Genetics and Pharmacology, Medical University of Innsbruck, Austria. (A.N., F.K., S.C., B.R.)
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal4 Saudi Arabia (A.N.)
| | - Leo Pölzl
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Felix Nägele
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Elke Kirchmair
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Gerald Degenhart
- Department of Radiology, Core Facility for Micro-CT, Medical University of Innsbruck, Austria. (G.D., G..F.)
| | - Egon Demetz
- Department of Internal Medicine III, Medical University of Innsbruck, Austria. (E.D., R.H., A.B., D. Lener, M.S., R.K., G.W., I.T.)
| | - Richard Hilbe
- Department of Internal Medicine III, Medical University of Innsbruck, Austria. (E.D., R.H., A.B., D. Lener, M.S., R.K., G.W., I.T.)
| | - Hao-Yu Chen
- Preventive and Genomic Cardiology, McGill University Health Centre Research Institute, Montreal, Quebec, Canada (J.C.E., H.-Y.C., G.T.)
| | - James C Engert
- Preventive and Genomic Cardiology, McGill University Health Centre Research Institute, Montreal, Quebec, Canada (J.C.E., H.-Y.C., G.T.)
| | - Anna Böhm
- Department of Internal Medicine III, Medical University of Innsbruck, Austria. (E.D., R.H., A.B., D. Lener, M.S., R.K., G.W., I.T.)
| | - Nadja Franz
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Daniela Lobenwein
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Daniela Lener
- Department of Internal Medicine III, Medical University of Innsbruck, Austria. (E.D., R.H., A.B., D. Lener, M.S., R.K., G.W., I.T.)
| | - Christiane Fuchs
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Vienna, Austria. (C.F., A.W.)
| | - Anna Weihs
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Vienna, Austria. (C.F., A.W.)
| | - Sonja Töchterle
- Institute of Molecular Biology/CMBI, University of Innsbruck, Austria. (S.T., D.M.)
| | - Georg F Vogel
- Department of Pediatrics/Institute of Cell Biology, Medical University of Innsbruck, Austria. (G.V.F.)
| | - Victor Schweiger
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Jonas Eder
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Peter Pietschmann
- Division of Cellular and Molecular Pathophysiology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Austria (P.P.)
| | - Markus Seifert
- Department of Internal Medicine III, Medical University of Innsbruck, Austria. (E.D., R.H., A.B., D. Lener, M.S., R.K., G.W., I.T.)
| | - Florian Kronenberg
- Institute of Genetic Epidemiology, Department of Genetics and Pharmacology, Medical University of Innsbruck, Austria. (A.N., F.K., S.C., B.R.)
| | - Stefan Coassin
- Institute of Genetic Epidemiology, Department of Genetics and Pharmacology, Medical University of Innsbruck, Austria. (A.N., F.K., S.C., B.R.)
| | - Michael Blumer
- Institute of Clinical and Functional Anatomy, Innsbruck Medical University, Austria (M.B.)
| | - Hubert Hackl
- Institute of Bioinformatics, Medical University of Innsbruck, Austria. (H.H.)
| | - Dirk Meyer
- Institute of Molecular Biology/CMBI, University of Innsbruck, Austria. (S.T., D.M.)
| | - Gudrun Feuchtner
- Department of Radiology, Core Facility for Micro-CT, Medical University of Innsbruck, Austria. (G.D., G..F.)
| | - Rudolf Kirchmair
- Department of Internal Medicine III, Medical University of Innsbruck, Austria. (E.D., R.H., A.B., D. Lener, M.S., R.K., G.W., I.T.)
| | - Jakob Troppmair
- Daniel Swarovski Research Laboratory, Department of Visceral, Transplant and Thoracic Surgery, University of Innsbruck, Austria. (J.T.)
| | - Markus Krane
- Department of Cardiovascular Surgery, German Heart Center Munich at the Technical University Munich, Germany (M.K.)
| | - Günther Weiss
- Department of Internal Medicine III, Medical University of Innsbruck, Austria. (E.D., R.H., A.B., D. Lener, M.S., R.K., G.W., I.T.)
| | - Sotirios Tsimikas
- Division of Cardiovascular Diseases, University of California, San Diego, La Jolla (S.T.)
| | - George Thanassoulis
- Preventive and Genomic Cardiology, McGill University Health Centre Research Institute, Montreal, Quebec, Canada (J.C.E., H.-Y.C., G.T.)
| | - Michael Grimm
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| | - Bernhard Rupp
- Institute of Genetic Epidemiology, Department of Genetics and Pharmacology, Medical University of Innsbruck, Austria. (A.N., F.K., S.C., B.R.)
| | - Lukas A Huber
- Institute of Cell Biology, Medical University of Innsbruck, Austria. (L.A.H.)
- Austrian Drug Screening Institute, ADSI, Innsbruck (L.A.H.)
| | - Shen-Ying Zhang
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY (S.-Y.Z., J.-L.C.)
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Necker Hospital for Sick Children, Paris, France (S.-Y.Z., J.-L.C.)
- University of Paris, Imagine Institute, France (S.-Y.Z., J.-L.C.)
| | - Jean-Laurent Casanova
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY (S.-Y.Z., J.-L.C.)
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Necker Hospital for Sick Children, Paris, France (S.-Y.Z., J.-L.C.)
- University of Paris, Imagine Institute, France (S.-Y.Z., J.-L.C.)
- Howard Hughes Medical Institute, New York, NY (J.-L.C.)
| | - Ivan Tancevski
- Department of Internal Medicine III, Medical University of Innsbruck, Austria. (E.D., R.H., A.B., D. Lener, M.S., R.K., G.W., I.T.)
| | - Johannes Holfeld
- Department of Cardiac Surgery, Medical University of Innsbruck, Austria. (C.G.-T., M.G, J.H., S.M., L.P., F.N., E.K., N.F., D. Lobenwein, V.S., J.E., M.G., J.H.)
| |
Collapse
|
10
|
De Souza LV, Hoffmann A, Fischer C, Petzer V, Asshoff M, Theurl I, Tymoszuk P, Seifert M, Brigo N, Hilbe R, Demetz E, Von Raffay L, Berger S, Barros-Pinkelnig M, Weiss G. Comparative analysis of oral and intravenous iron therapy in rat models of inflammatory anemia and iron deficiency. Haematologica 2023; 108:135-149. [PMID: 35796011 PMCID: PMC9827174 DOI: 10.3324/haematol.2022.281149] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/29/2022] [Indexed: 02/05/2023] Open
Abstract
Anemia is a major health issue and associated with increased morbidity. Iron deficiency anemia (IDA) is the most prevalent, followed by anemia of chronic disease (ACD). IDA and ACD often co-exist, challenging diagnosis and treatment. While iron supplementation is the first-line therapy for IDA, its optimal route of administration and the efficacy of different repletion strategies in ACD are elusive. Female Lewis rats were injected with group A streptococcal peptidoglycan-polysaccharide (PG-APS) to induce inflammatory arthritis with associated ACD and/or repeatedly phlebotomized and fed with a low iron diet to induce IDA, or a combination thereof (ACD/IDA). Iron was either supplemented by daily oral gavage of ferric maltol or by weekly intravenous (i.v.) injection of ferric carboxymaltose for up to 4 weeks. While both strategies reversed IDA, they remained ineffective to improve hemoglobin (Hb) levels in ACD, although oral iron showed slight amelioration of various erythropoiesis-associated parameters. In contrast, both iron treatments significantly increased Hb in ACD/IDA. In ACD and ACD/IDA animals, i.v. iron administration resulted in iron trapping in liver and splenic macrophages, induction of ferritin expression and increased circulating levels of the iron hormone hepcidin and the inflammatory cytokine interleukin-6, while oral iron supplementation reduced interleukin-6 levels. Thus, oral and i.v. iron resulted in divergent effects on systemic and tissue iron homeostasis and inflammation. Our results indicate that both iron supplements improve Hb in ACD/IDA, but are ineffective in ACD with pronounced inflammation, and that under the latter condition, i.v. iron is trapped in macrophages and may enhance inflammation.
Collapse
Affiliation(s)
- Lara Valente De Souza
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia research, Medical University of Innsbruck
| | - Alexander Hoffmann
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia research, Medical University of Innsbruck
| | - Christine Fischer
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Verena Petzer
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Malte Asshoff
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Igor Theurl
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Piotr Tymoszuk
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia research, Medical University of Innsbruck
| | - Natascha Brigo
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Richard Hilbe
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Egon Demetz
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Laura Von Raffay
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Sylvia Berger
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Marina Barros-Pinkelnig
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck
| | - Guenter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia research, Medical University of Innsbruck.
| |
Collapse
|
11
|
Haufe L, Timoshev V, Seifert M, Busse O, Weigand JJ. Crucial Role of Silica-Alumina Binder Mixtures for Hydrocarbon Cracking with ZSM-5 Additives. ACS Omega 2022; 7:44892-44902. [PMID: 36530309 PMCID: PMC9753518 DOI: 10.1021/acsomega.2c05003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 10/17/2022] [Indexed: 06/17/2023]
Abstract
Alumina-containing binders are widely used for the binding of catalyst particles by spray drying and calcination. As a part of the active matrix, they contribute to the catalytic performance of the resulting catalyst grain during hydrocarbon cracking. In this study, correlations are investigated using different compositions of Al- and Si-based binders (AlCl3 and colloidal silica) together with kaolin as a filler and ZSM-5 zeolite as an active compound. It was demonstrated that the conversion of a 50:50 hexane mixture, the selectivity toward unsaturated hydrocarbons, and the shape-selective conversion of the hexane feed are highly dependent on the amount and distribution of alumina in binder formulations. While silica species are distributed near the outer shell of catalyst grains, the alumina species are distributed evenly as an adhesive between the catalyst compounds ZSM-5 and kaolin. An optimum amount of alumina in binder formulations results in an increasing conversion of hydrocarbon feedstock due to optimum in active-site accessibility but only a slight decrease in shape-selective properties compared to pure ZSM-5, resulting in an optimum yield of light olefins, especially propylene.
Collapse
|
12
|
Su Y, Wenzel M, Seifert M, Weigand JJ. Surface ion-imprinted brewer's spent grain with low template loading for selective uranyl ions adsorption from simulated wastewater. J Hazard Mater 2022; 440:129682. [PMID: 35939905 DOI: 10.1016/j.jhazmat.2022.129682] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/12/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Efficient removal of uranyl ions from wastewater requires excellent selectivity of the adsorbents. Herein, we report a new strategy using a high monomer/template molar ratio of 500:1 to prepare surface ion-imprinted brewer's spent grain (IIP-BSG) for selective U(VI) removal using binary functional monomers (2-hydroxyethyl methacrylate and diethyl vinylphosphonate) with high site accessibility and easy template removal. IIP-BSG exhibits a maximum U(VI) adsorption capacity of 165.7 mg/g, a high selectivity toward U(VI) in the presence of an excess amount of Eu(III) (Eu/U molar ratio = 20), a good tolerance of salinity, and a high reusability. In addition, mechanism studies have revealed electrostatic interaction and a coordination of uranyl ions by carboxyl and phosphoryl groups, the predominant contribution of high-energy (specific) sites during selective adsorption, and internal mass transfer as the rate-controlling step of U(VI) adsorption. Furthermore, IIP-BSG shows great potentials to separate U(VI) from lanthanides in simulated nuclear wastewater (pH0 = 3.5) and selectively concentrate U(VI) from simulated mine water (pH0 = 7.1). This study proves that the ion-imprinting effect can be achieved using a very low template amount with reduced production cost and secondary pollution, which benefits large-scale promotion of the ion-imprinted materials for selective uranyl ions removal.
Collapse
Affiliation(s)
- Yi Su
- Chair of Inorganic Molecular Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Marco Wenzel
- Chair of Inorganic Molecular Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Markus Seifert
- Chair of Inorganic Molecular Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Jan J Weigand
- Chair of Inorganic Molecular Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany.
| |
Collapse
|
13
|
Su Y, Wenzel M, Paasch S, Seifert M, Doert T, Brunner E, Weigand JJ. One-pot synthesis of brewer's spent grain-supported superabsorbent polymer for highly efficient uranium adsorption from wastewater. Environ Res 2022; 212:113333. [PMID: 35483410 DOI: 10.1016/j.envres.2022.113333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/14/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
High-efficient and fast adsorption of uranium is important to reduce the hazards caused by the uranium contamination of water environment due to the increased human activities. Herein, brewer's spent grain (BSG)-supported superabsorbent polymers (SAP) with different cross-linking densities are prepared as cheap and eco-friendly adsorbents for the first time via one-pot swelling and graft polymerization. A 7 wt% NaOH solution is used to swell BSG before grafting and subsequently neutralize the acrylic acid to control the reaction rate without producing alkaline wastewater. Compared with the traditional methods, swelling improves the grafting density and the utilization of raw materials due to the increased disorder degree of the BSG fibers. This results in the grafting of abundant carboxyl and amide groups onto the BSG backbone, forming a strongly hydrophilic polymer network of the BSG-SAP. Compared with the reference polymers without BSG, BSG-SAP presents higher adsorption capacity and enhanced reusability. The highly cross-linked BSG-SAP (BSG-SAP-H) shows an outstanding adsorption capacity of U(VI) (1465 mg/g at pH0 = 4.6), a fast adsorption rate (81% of equilibrium adsorption capacity in 15 min), and a high selectivity in the presence of competing ions. Adsorption mechanism studies reveal the involvement of amide groups, a bidentate binding structure between UO22+ and the carboxyl groups, and a cation exchange between Na+ and UO22+. More importantly, the adsorption capacity of BSG-SAP-H reaches 254.4 mg/g in the fixed-bed column experiment at a low initial concentration (c0(U) = 30 mg/L) and keeps 80% of the adsorption capacity after four cycles, indicating a great potential for uranium removal from wastewater. This work shows a suitable approach to explore the untreated biomass to prepare SAP with enhanced adsorption performance via a general and low-cost strategy.
Collapse
Affiliation(s)
- Yi Su
- Chair of Inorganic Molecular Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Marco Wenzel
- Chair of Inorganic Molecular Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Silvia Paasch
- Chair of Bioanalytical Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Markus Seifert
- Chair of Inorganic Molecular Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Thomas Doert
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Eike Brunner
- Chair of Bioanalytical Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Jan J Weigand
- Chair of Inorganic Molecular Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany.
| |
Collapse
|
14
|
Burger Z, Aung HT, Seifert M, Mar TT, Harris V, Colman RE, Rodwell TC, Aung ST. Contributions of GeneXpert ® to TB diagnosis in Myanmar. Int J Tuberc Lung Dis 2022; 26:875-879. [PMID: 35996278 PMCID: PMC9423018 DOI: 10.5588/ijtld.22.0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: Xpert® MTB/RIF, a rapid, molecular TB diagnostic assay, can detect Mycobacterium tuberculosis and rifampin resistance directly from clinical sputum samples in <2 h with high sensitivity and specificity. The added diagnostic value of Xpert over smear microscopy at a national level in Myanmar has not been previously reported.METHODS: We evaluated 339,358 Xpert and demographic records captured from January 2015 to December 2018 as part of the Myanmar National TB Program Data Utilization and Connectivity Project to examine the additional diagnostic yield of Xpert relative to smear for the detection of M. tuberculosis for TB diagnosis in Myanmar, with a focus on people living with HIV (PLHIV) and sample type.RESULTS: Use of Xpert increased TB case detection by 40% compared to smear microscopy results. Among PLHIV, use of Xpert increased TB case detection by almost 100% compared to smear microscopy results.CONCLUSION: Xpert testing identified more patients with TB than smear microscopy alone, particularly in cohorts with significant proportions of PLHIV. The use of Xpert as a screening tool in countries with a high burden of TB could lead to significantly increased diagnosis of TB at a regional and national level.
Collapse
Affiliation(s)
- Z Burger
- University of California San Diego, La Jolla, CA, USA
| | - H T Aung
- Clinton Health Access Initiative, Yangon, Myanmar
| | - M Seifert
- University of California San Diego, La Jolla, CA, USA
| | - T T Mar
- Ministry of Health and Sports, Naypyitaw, Myanmar
| | - V Harris
- Foundation for Innovative New Diagnostics, Geneva, Switzerland
| | - R E Colman
- University of California San Diego, La Jolla, CA, USA
| | - T C Rodwell
- University of California San Diego, La Jolla, CA, USA
| | - S T Aung
- Ministry of Health and Sports, Naypyitaw, Myanmar
| |
Collapse
|
15
|
Schoffer O, Birkner T, Tesch F, Seifert M, Hense H, Lugnier C, Sommerlatte S, Kraeft AL, Schildmann J, Reinacher-Schick A, Schmitt J. Medizinische Versorgung von Patient:innen unter Ressourcenknappheit
am Beispiel der COVID-19 Pandemie mit besonderem Fokus auf kolorektalem Karzinom
und Pankreaskarzinom. Das Gesundheitswesen 2022. [DOI: 10.1055/s-0042-1753808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- O Schoffer
- Hochschulmedizin Dresden, Zentrum für evidenzbasierte
Gesundheitsversorgung, Dresden, Deutschland
| | - T Birkner
- Hochschulmedizin Dresden, Zentrum für evidenzbasierte
Gesundheitsversorgung, Dresden, Deutschland
| | - F Tesch
- Hochschulmedizin Dresden, Zentrum für evidenzbasierte
Gesundheitsversorgung, Dresden, Deutschland
| | - M Seifert
- Hochschulmedizin Dresden, Zentrum für evidenzbasierte
Gesundheitsversorgung, Dresden, Deutschland
| | - H Hense
- Hochschulmedizin Dresden, Zentrum für evidenzbasierte
Gesundheitsversorgung, Dresden, Deutschland
| | - C Lugnier
- Ruhr-Universität Bochum, Klinik für
Hämatologie/ Onkologie, Bochum, Deutschland
| | - S Sommerlatte
- Martin-Luther-Universität Halle-Wittenberg, Institut
für Geschichte und Ethik der Medizin, Halle, Deutschland
| | - A-L Kraeft
- Ruhr-Universität Bochum, Klinik für
Hämatologie/ Onkologie, Bochum, Deutschland
| | - J Schildmann
- Martin-Luther-Universität Halle-Wittenberg, Institut
für Geschichte und Ethik der Medizin, Halle, Deutschland
| | - A Reinacher-Schick
- Ruhr-Universität Bochum, Klinik für
Hämatologie/ Onkologie, Bochum, Deutschland
| | - J Schmitt
- Hochschulmedizin Dresden, Zentrum für evidenzbasierte
Gesundheitsversorgung, Dresden, Deutschland
| |
Collapse
|
16
|
Grander M, Hoffmann A, Seifert M, Demetz E, Grubwieser P, Pfeifhofer-Obermair C, Haschka D, Weiss G. DMT1 Protects Macrophages from Salmonella Infection by Controlling Cellular Iron Turnover and Lipocalin 2 Expression. Int J Mol Sci 2022; 23:ijms23126789. [PMID: 35743233 PMCID: PMC9223531 DOI: 10.3390/ijms23126789] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/10/2022] [Accepted: 06/15/2022] [Indexed: 02/04/2023] Open
Abstract
Macrophages are at the center of innate pathogen control and iron recycling. Divalent metal transporter 1 (DMT1) is essential for the uptake of non-transferrin-bound iron (NTBI) into macrophages and for the transfer of transferrin-bound iron from the endosome to the cytoplasm. As the control of cellular iron trafficking is central for the control of infection with siderophilic pathogens such as Salmonella Typhimurium, a Gram-negative bacterium residing within the phagosome of macrophages, we examined the potential role of DMT1 for infection control. Bone marrow derived macrophages lacking DMT1 (DMT1fl/flLysMCre(+)) present with reduced NTBI uptake and reduced levels of the iron storage protein ferritin, the iron exporter ferroportin and, surprisingly, of the iron uptake protein transferrin receptor. Further, DMT1-deficient macrophages have an impaired control of Salmonella Typhimurium infection, paralleled by reduced levels of the peptide lipocalin-2 (LCN2). LCN2 exerts anti-bacterial activity upon binding of microbial siderophores but also facilitates systemic and cellular hypoferremia. Remarkably, nifedipine, a pharmacological DMT1 activator, stimulates LCN2 expression in RAW264.7 macrophages, confirming its DMT1-dependent regulation. In addition, the absence of DMT1 increases the availability of iron for Salmonella upon infection and leads to increased bacterial proliferation and persistence within macrophages. Accordingly, mice harboring a macrophage-selective DMT1 disruption demonstrate reduced survival following Salmonella infection. This study highlights the importance of DMT1 in nutritional immunity and the significance of iron delivery for the control of infection with siderophilic bacteria.
Collapse
Affiliation(s)
- Manuel Grander
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; (M.G.); (A.H.); (M.S.); (E.D.); (P.G.); (C.P.-O.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Alexander Hoffmann
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; (M.G.); (A.H.); (M.S.); (E.D.); (P.G.); (C.P.-O.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; (M.G.); (A.H.); (M.S.); (E.D.); (P.G.); (C.P.-O.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Egon Demetz
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; (M.G.); (A.H.); (M.S.); (E.D.); (P.G.); (C.P.-O.)
| | - Philipp Grubwieser
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; (M.G.); (A.H.); (M.S.); (E.D.); (P.G.); (C.P.-O.)
| | - Christa Pfeifhofer-Obermair
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; (M.G.); (A.H.); (M.S.); (E.D.); (P.G.); (C.P.-O.)
| | - David Haschka
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; (M.G.); (A.H.); (M.S.); (E.D.); (P.G.); (C.P.-O.)
- Correspondence: (D.H.); (G.W.)
| | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria; (M.G.); (A.H.); (M.S.); (E.D.); (P.G.); (C.P.-O.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, 6020 Innsbruck, Austria
- Correspondence: (D.H.); (G.W.)
| |
Collapse
|
17
|
Grubwieser P, Hoffmann A, Hilbe R, Seifert M, Sonnweber T, Böck N, Theurl I, Weiss G, Nairz M. Airway Epithelial Cells Differentially Adapt Their Iron Metabolism to Infection With Klebsiella pneumoniae and Escherichia coli In Vitro. Front Cell Infect Microbiol 2022; 12:875543. [PMID: 35663465 PMCID: PMC9157649 DOI: 10.3389/fcimb.2022.875543] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/22/2022] [Indexed: 12/13/2022] Open
Abstract
Background Pneumonia is often elicited by bacteria and can be associated with a severe clinical course, respiratory failure and the need for mechanical ventilation. In the alveolus, type-2-alveolar-epithelial-cells (AECII) contribute to innate immune functions. We hypothesized that AECII actively adapt cellular iron homeostasis to restrict this essential nutrient from invading pathogens - a defense strategy termed 'nutritional immunity', hitherto mainly demonstrated for myeloid cells. Methods We established an in-vitro infection model using the human AECII-like cell line A549. We infected cells with Klebsiella pneumoniae (K. pneumoniae) and Escherichia coli (E. coli), two gram-negative bacteria with different modes of infection and frequent causes of hospital-acquired pneumonia. We followed the entry and intracellular growth of these gram-negative bacteria and analyzed differential gene expression and protein levels of key inflammatory and iron metabolism molecules. Results Both, K. pneumoniae and E. coli are able to invade A549 cells, whereas only K. pneumoniae is capable of proliferating intracellularly. After peak bacterial burden, the number of intracellular pathogens declines, suggesting that epithelial cells initiate antimicrobial immune effector pathways to combat bacterial proliferation. The extracellular pathogen E. coli induces an iron retention phenotype in A549 cells, mainly characterized by the downregulation of the pivotal iron exporter ferroportin, the upregulation of the iron importer transferrin-receptor-1 and corresponding induction of the iron storage protein ferritin. In contrast, cells infected with the facultative intracellular bacterium K. pneumoniae exhibit an iron export phenotype indicated by ferroportin upregulation. This differential regulation of iron homeostasis and the pathogen-specific inflammatory reaction is likely mediated by oxidative stress. Conclusion AECII-derived A549 cells show pathogen-specific innate immune functions and adapt their iron handling in response to infection. The differential regulation of iron transporters depends on the preferential intra- or extracellular localization of the pathogen and likely aims at limiting bacterial iron availability.
Collapse
Affiliation(s)
- Philipp Grubwieser
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Alexander Hoffmann
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Thomas Sonnweber
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Nina Böck
- Biocenter, Institute of Bioinformatics, Medical University of Innsbruck, Innsbruck, Austria
| | - Igor Theurl
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| |
Collapse
|
18
|
Carrasco Saavedra A, Timoshev V, Hauck M, Hassan Nejad M, Dang TT, Vu XH, Seifert M, Busse O, Weigand JJ. Binder Selection to Modify Hydrocarbon Cracking Properties of Zeolite-Containing Composites. ACS Omega 2022; 7:16430-16441. [PMID: 35601311 PMCID: PMC9118377 DOI: 10.1021/acsomega.2c00446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 02/28/2022] [Indexed: 06/15/2023]
Abstract
Activity, selectivity, and deactivation behavior of catalyst materials determine their efficiency in hydrocarbon conversion processes. For hydrocarbon cracking, the industrial catalyst is an important parameter in reaction technology to produce valuable compounds, e.g., light olefins (C3-C5) and gasoline from crude oil fractions with high molecular weight (C16+). One strategy to enhance the catalytic activity for precracking is increasing the matrix activity, which depends on the used binder and additives. In this work, three binders (water glass, aluminum chloride, and a mixture of colloidal silica with aluminum dihydrogen phosphate) were used in combination with active zeolite Y, kaolin as filler, and ZSM-5 as additive to produce composite materials. Specific surface area and surface acidity measurements were combined with catalytic testing of the formulated samples in order to find the relation between the catalyst morphology and its activity. In addition, constraint index was used as a control parameter for the determination of the shape-selective properties and their correlation with the catalytic activity. The results show that the binders determine the porosity of the matrix and so the accessibility to zeolite pores and active sites. Matrixes with low porosity and activity enhance coke production and deactivate faster than matrixes with mesopores. Furthermore, ZSM-5 modifies the individual morphological and catalytic effects of the binders. Everything considered, the small crystals of ZSM-5 together with mesopores increase the olefins yield, reduce coking, and therefore enhance the performance of the final grain.
Collapse
Affiliation(s)
- Andres Carrasco Saavedra
- Faculty
of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
| | - Vladislav Timoshev
- Faculty
of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
| | - Mathias Hauck
- Faculty
of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
| | | | - Tung Thanh Dang
- Vietnam
National Oil and Gas Group, 18 Lang Ha Street, Ba Dinh District, Hanoi
City 118000, Vietnam
| | - Xuan Hoan Vu
- Vietnam
Petroleum Institute, 167 Trung Kinh Street, Cau Giay District, Hanoi City 122000, Vietnam
| | - Markus Seifert
- Faculty
of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
| | - Oliver Busse
- Faculty
of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
| | - Jan J. Weigand
- Faculty
of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
| |
Collapse
|
19
|
Jonscher C, Seifert M, Kretzschmar N, Marschall MS, Le Anh M, Doert T, Busse O, Weigand JJ. Origin of Morphology Change and Effect of Crystallization Time and Si/Al Ratio during Synthesis of Zeolite ZSM‐5. ChemCatChem 2022. [DOI: 10.1002/cctc.202101248] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Clemens Jonscher
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry Mommsenstraße 4 01069 Dresden Germany
| | - Markus Seifert
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry Mommsenstraße 4 01069 Dresden Germany
| | - Nils Kretzschmar
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry Mommsenstraße 4 01069 Dresden Germany
| | - Mathias S. Marschall
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry Mommsenstraße 4 01069 Dresden Germany
| | - Mai Le Anh
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry Mommsenstraße 4 01069 Dresden Germany
| | - Thomas Doert
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry Mommsenstraße 4 01069 Dresden Germany
| | - Oliver Busse
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry Mommsenstraße 4 01069 Dresden Germany
| | - Jan J. Weigand
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry Mommsenstraße 4 01069 Dresden Germany
| |
Collapse
|
20
|
Fischer C, Volani C, Komlódi T, Seifert M, Demetz E, Valente de Souza L, Auer K, Petzer V, von Raffay L, Moser P, Gnaiger E, Weiss G. Dietary Iron Overload and Hfe-/- Related Hemochromatosis Alter Hepatic Mitochondrial Function. Antioxidants (Basel) 2021; 10:antiox10111818. [PMID: 34829689 PMCID: PMC8615072 DOI: 10.3390/antiox10111818] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/04/2021] [Accepted: 11/13/2021] [Indexed: 12/13/2022] Open
Abstract
Iron is an essential co-factor for many cellular metabolic processes, and mitochondria are main sites of utilization. Iron accumulation promotes production of reactive oxygen species (ROS) via the catalytic activity of iron species. Herein, we investigated the consequences of dietary and genetic iron overload on mitochondrial function. C57BL/6N wildtype and Hfe-/- mice, the latter a genetic hemochromatosis model, received either normal diet (ND) or high iron diet (HI) for two weeks. Liver mitochondrial respiration was measured using high-resolution respirometry along with analysis of expression of specific proteins and ROS production. HI promoted tissue iron accumulation and slightly affected mitochondrial function in wildtype mice. Hepatic mitochondrial function was impaired in Hfe-/- mice on ND and HI. Compared to wildtype mice, Hfe-/- mice on ND showed increased mitochondrial respiratory capacity. Hfe-/- mice on HI showed very high liver iron levels, decreased mitochondrial respiratory capacity and increased ROS production associated with reduced mitochondrial aconitase activity. Although Hfe-/- resulted in increased mitochondrial iron loading, the concentration of metabolically reactive cytoplasmic iron and mitochondrial density remained unchanged. Our data show multiple effects of dietary and genetic iron loading on mitochondrial function and linked metabolic pathways, providing an explanation for fatigue in iron-overloaded hemochromatosis patients, and suggests iron reduction therapy for improvement of mitochondrial function.
Collapse
Affiliation(s)
- Christine Fischer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Chiara Volani
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Timea Komlódi
- Oroboros Instruments, Schöpfstrasse 18, 6020 Innsbruck, Austria; (T.K.); (E.G.)
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Egon Demetz
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Lara Valente de Souza
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Kristina Auer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Verena Petzer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Laura von Raffay
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Patrizia Moser
- Department of Pathology, Innsbruck University Hospital, Anichstrasse 35, 6020 Innsbruck, Austria;
| | - Erich Gnaiger
- Oroboros Instruments, Schöpfstrasse 18, 6020 Innsbruck, Austria; (T.K.); (E.G.)
| | - Guenter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
- Correspondence: ; Tel.: +43-(0)512/504-23251
| |
Collapse
|
21
|
Hoffmann A, Haschka D, Valente de Souza L, Tymoszuk P, Seifert M, von Raffay L, Hilbe R, Petzer V, Moser PL, Nairz M, Weiss G. Baseline iron status and presence of anaemia determine the course of systemic Salmonella infection following oral iron supplementation in mice. EBioMedicine 2021; 71:103568. [PMID: 34488018 PMCID: PMC8426537 DOI: 10.1016/j.ebiom.2021.103568] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/29/2021] [Accepted: 08/18/2021] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Iron deficiency anaemia (IDA) is a major health concern. However, preventive iron supplementation in regions with high burden of infectious diseases resulted in an increase of infection related morbidity and mortality. METHODS We fed male C57BL/6N mice with either an iron deficient or an iron adequate diet. Next, they received oral iron supplementation or placebo followed by intraperitoneal infection with Salmonella Typhimurium (S.Tm). FINDINGS We found that mice with IDA had a poorer clinical outcome than mice on an iron adequate diet. Interestingly, iron supplementation of IDA mice resulted in higher bacterial burden in organs and shortened survival. Increased transferrin saturation and non-transferrin bound iron in the circulation together with low expression of ferroportin facilitated the access of the pathogen to iron and promoted bacterial growth. Anaemia, independent of iron supplementation, was correlated with reduced neutrophil counts and cytotoxic T cells. With iron supplementation, anaemia additionally correlated with increased splenic levels of the cytokine IL-10, which is suggestive for a weakened immune control to S.Tm infection. INTERPRETATION Supplementing iron to anaemic mice worsens the clinical course of bacterial infection. This can be traced back to increased iron delivery to bacteria along with an impaired anti-microbial immune response. Our findings may have important implications for iron supplementation strategies in areas with high endemic burden of infections, putting those individuals, who potentially profit most from iron supplementation for anaemia, at the highest risk for infections. FUNDING Financial support by the Christian Doppler Laboratory for Iron Metabolism and Anemia Research.
Collapse
Affiliation(s)
- Alexander Hoffmann
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck A-6020, Austria
| | - David Haschka
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria
| | - Lara Valente de Souza
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck A-6020, Austria
| | - Piotr Tymoszuk
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck A-6020, Austria
| | - Laura von Raffay
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria
| | - Verena Petzer
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria
| | - Patrizia L Moser
- Institute of Pathology, INNPATH, Anichstraße 35, Innsbruck A-6020, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, Innsbruck A-6020, Austria; Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck A-6020, Austria.
| |
Collapse
|
22
|
Su Y, Wenzel M, Paasch S, Seifert M, Böhm W, Doert T, Weigand JJ. Recycling of Brewer's Spent Grain as a Biosorbent by Nitro-Oxidation for Uranyl Ion Removal from Wastewater. ACS Omega 2021; 6:19364-19377. [PMID: 34368523 PMCID: PMC8340112 DOI: 10.1021/acsomega.1c00589] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
Developing biosorbents derived from agro-industrial biomass is considered as an economic and sustainable method for dealing with uranium-contaminated wastewater. The present study explores the feasibility of oxidizing a representative protein-rich biomass, brewer's spent grain (BSG), to an effective and reusable uranyl ion adsorbent to reduce the cost and waste generation during water treatment. The unique composition of BSG favors the oxidation process and yields in a high carboxyl group content (1.3 mmol/g) of the biosorbent. This makes BSG a cheap, sustainable, and suitable raw material independent from pre-treatment. The oxidized brewer's spent grain (OBSG) presents a high adsorption capacity of U(VI) of 297.3 mg/g (c 0(U) = 900 mg/L, pH = 4.7) and fast adsorption kinetics (1 h) compared with other biosorbents reported in the literature. Infrared spectra (Fourier transform infrared), 13C solid-state nuclear magnetic resonance spectra, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and thermogravimetric analysis were employed to characterize the biosorbents and reveal the adsorption mechanisms. The desorption and reusability of OBSG were tested for five cycles, resulting in a remaining adsorption of U(VI) of 100.3 mg/g and a desorption ratio of 89%. This study offers a viable and sustainable approach to convert agro-industrial waste into effective and reusable biosorbents for uranium removal from wastewater.
Collapse
Affiliation(s)
- Yi Su
- Chair
of Inorganic Molecular Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Marco Wenzel
- Chair
of Inorganic Molecular Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Silvia Paasch
- Chair
of Bioanalytical Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Markus Seifert
- Chair
of Inorganic Molecular Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Wendelin Böhm
- Chair
of Food Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Thomas Doert
- Chair
of Inorganic Chemistry II, TU Dresden, 01062 Dresden, Germany
| | - Jan J. Weigand
- Chair
of Inorganic Molecular Chemistry, TU Dresden, 01062 Dresden, Germany
| |
Collapse
|
23
|
Hoffmann A, de Souza LV, Seifert M, von Raffay L, Haschka D, Grubwieser P, Grander M, Mitterstiller AM, Nairz M, Poli M, Weiss G. Pharmacological Targeting of BMP6-SMAD Mediated Hepcidin Expression Does Not Improve the Outcome of Systemic Infections With Intra-Or Extracellular Gram-Negative Bacteria in Mice. Front Cell Infect Microbiol 2021; 11:705087. [PMID: 34368018 PMCID: PMC8342937 DOI: 10.3389/fcimb.2021.705087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/05/2021] [Indexed: 12/21/2022] Open
Abstract
Introduction Hepcidin is the systemic master regulator of iron metabolism as it degrades the cellular iron exporter ferroportin. In bacterial infections, hepcidin is upregulated to limit circulating iron for pathogens, thereby increasing iron retention in macrophages. This mechanism withholds iron from extracellular bacteria but could be of disadvantage in infections with intracellular bacteria. We aimed to understand the role of hepcidin in infections with intra- or extracellular bacteria using different hepcidin inhibitors. Methods For the experiments LDN-193189 and oversulfated heparins were used, which interact with the BMP6-SMAD pathway thereby inhibiting hepcidin expression. We infected male C57BL/6N mice with either the intracellular bacterium Salmonella Typhimurium or the extracellular bacterium Escherichia coli and treated these mice with the different hepcidin inhibitors. Results Both inhibitors effectively reduced hepcidin levels in vitro under steady state conditions and upon stimulation with the inflammatory signals interleukin-6 or lipopolysaccharide. The inhibitors also reduced hepcidin levels and increased circulating iron concentration in uninfected mice. However, both compounds failed to decrease liver- and circulating hepcidin levels in infected mice and did not affect ferroportin expression in the spleen or impact on serum iron levels. Accordingly, both BMP-SMAD signaling inhibitors did not influence bacterial numbers in different organs in the course of E.coli or S.Tm sepsis. Conclusion These data indicate that targeting the BMP receptor or the BMP-SMAD pathway is not sufficient to suppress hepcidin expression in the course of infection with both intra- or extracellular bacteria. This suggests that upon pharmacological inhibition of the central SMAD-BMP pathways during infection, other signaling cascades are compensatorily induced to ensure sufficient hepcidin formation and iron restriction to circulating microbes.
Collapse
Affiliation(s)
- Alexander Hoffmann
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Lara Valente de Souza
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Laura von Raffay
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - David Haschka
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Philipp Grubwieser
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Manuel Grander
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Anna-Maria Mitterstiller
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Maura Poli
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| |
Collapse
|
24
|
Brigo N, Pfeifhofer-Obermair C, Tymoszuk P, Demetz E, Engl S, Barros-Pinkelnig M, Dichtl S, Fischer C, Valente De Souza L, Petzer V, von Raffay L, Hilbe R, Berger S, Seifert M, Schleicher U, Bogdan C, Weiss G. Cytokine-Mediated Regulation of ARG1 in Macrophages and Its Impact on the Control of Salmonella enterica Serovar Typhimurium Infection. Cells 2021; 10:1823. [PMID: 34359992 PMCID: PMC8307077 DOI: 10.3390/cells10071823] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 07/06/2021] [Accepted: 07/13/2021] [Indexed: 12/24/2022] Open
Abstract
Arginase 1 (ARG1) is a cytosolic enzyme that cleaves L-arginine, the substrate of inducible nitric oxide synthase (iNOS), and thereby impairs the control of various intracellular pathogens. Herein, we investigated the role of ARG1 during infection with Salmonella enterica serovar Typhimurium (S.tm). To study the impact of ARG1 on Salmonella infections in vitro, bone marrow-derived macrophages (BMDM) from C57BL/6N wild-type, ARG1-deficient Tie2Cre+/-ARG1fl/fl and NRAMPG169 C57BL/6N mice were infected with S.tm. In wild-type BMDM, ARG1 was induced by S.tm and further upregulated by the addition of interleukin (IL)-4, whereas interferon-γ had an inhibitory effect. Deletion of ARG1 did not result in a reduction in bacterial numbers. In vivo, Arg1 mRNA was upregulated in the spleen, but not in the liver of C57BL/6N mice following intraperitoneal S.tm infection. The genetic deletion of ARG1 (Tie2Cre+/-ARG1fl/fl) or its pharmacological inhibition with CB-1158 neither affected the numbers of S.tm in spleen, liver and blood nor the expression of host response genes such as iNOS, IL-6 or tumour necrosis factor (TNF). Furthermore, ARG1 was dispensable for pathogen control irrespective of the presence or absence of the phagolysosomal natural resistance-associated macrophage protein 1 (NRAMP1). Thus, unlike the detrimental function of ARG1 seen during infections with other intraphagosomal microorganisms, ARG1 did not support bacterial survival in systemic salmonellosis, indicating differential roles of arginine metabolism for host immune response and microbe persistence depending on the type of pathogen.
Collapse
Affiliation(s)
- Natascha Brigo
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Christa Pfeifhofer-Obermair
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Piotr Tymoszuk
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Egon Demetz
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Sabine Engl
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Marina Barros-Pinkelnig
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Stefanie Dichtl
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Christine Fischer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Lara Valente De Souza
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Verena Petzer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Laura von Raffay
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Richard Hilbe
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Sylvia Berger
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Ulrike Schleicher
- Mikrobiologisches Institut—Klinische Mikrobiologie, Immunologie, und Hygiene, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Universitätsklinikum Erlangen, Wasserturmstraße 3/5, 91054 Erlangen, Germany; (U.S.); (C.B.)
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Christian Bogdan
- Mikrobiologisches Institut—Klinische Mikrobiologie, Immunologie, und Hygiene, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Universitätsklinikum Erlangen, Wasserturmstraße 3/5, 91054 Erlangen, Germany; (U.S.); (C.B.)
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (N.B.); (C.P.-O.); (P.T.); (E.D.); (S.E.); (M.B.-P.); (S.D.); (C.F.); (L.V.D.S.); (V.P.); (L.v.R.); (R.H.); (S.B.); (M.S.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| |
Collapse
|
25
|
Haschka D, Tymoszuk P, Petzer V, Hilbe R, Heeke S, Dichtl S, Skvortsov S, Demetz E, Berger S, Seifert M, Mitterstiller AM, Moser P, Bumann D, Nairz M, Theurl I, Weiss G. Ferritin H deficiency deteriorates cellular iron handling and worsens Salmonella typhimurium infection by triggering hyperinflammation. JCI Insight 2021; 6:e141760. [PMID: 34236052 PMCID: PMC8410025 DOI: 10.1172/jci.insight.141760] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 05/26/2021] [Indexed: 12/30/2022] Open
Abstract
Iron is an essential nutrient for mammals as well as for pathogens. Inflammation-driven changes in systemic and cellular iron homeostasis are central for host-mediated antimicrobial strategies. Here, we studied the role of the iron storage protein ferritin H (FTH) for the control of infections with the intracellular pathogen Salmonella enterica serovar Typhimurium by macrophages. Mice lacking FTH in the myeloid lineage (LysM-Cre+/+Fthfl/fl mice) displayed impaired iron storage capacities in the tissue leukocyte compartment, increased levels of labile iron in macrophages, and an accelerated macrophage-mediated iron turnover. While under steady-state conditions, LysM-Cre+/+Fth+/+ and LysM-Cre+/+Fthfl/fl animals showed comparable susceptibility to Salmonella infection, i.v. iron supplementation drastically shortened survival of LysM-Cre+/+Fthfl/fl mice. Mechanistically, these animals displayed increased bacterial burden, which contributed to uncontrolled triggering of NF-κB and inflammasome signaling and development of cytokine storm and death. Importantly, pharmacologic inhibition of the inflammasome and IL-1β pathways reduced cytokine levels and mortality and partly restored infection control in iron-treated ferritin-deficient mice. These findings uncover incompletely characterized roles of ferritin and cellular iron turnover in myeloid cells in controlling bacterial spread and for modulating NF-κB and inflammasome-mediated cytokine activation, which may be of vital importance in iron-overloaded individuals suffering from severe infections and sepsis.
Collapse
Affiliation(s)
- David Haschka
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Piotr Tymoszuk
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Verena Petzer
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Simon Heeke
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Stefanie Dichtl
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Sergej Skvortsov
- Department of Therapeutic Radiology and Oncology, Laboratory for Experimental and Translational Research on Radiation Oncology, Tyrolean Cancer Research Institute, Medical University of Innsbruck, Innsbruck, Austria
| | - Egon Demetz
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Sylvia Berger
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | | | | | - Dirk Bumann
- Biozentrum, University of Basel, Klingelbergstrasse, Basel, Switzerland
| | - Manfred Nairz
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Igor Theurl
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Guenter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| |
Collapse
|
26
|
Seifert M, Jonscher C, Haufe LA, Weigand JJ. Deactivation Kinetics of ZSM‐5 by Coke in Ethanol‐to‐Hydrocarbons Process. CHEM-ING-TECH 2021. [DOI: 10.1002/cite.202000228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Markus Seifert
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Clemens Jonscher
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Liane A. Haufe
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Jan J. Weigand
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| |
Collapse
|
27
|
Carrasco Saavedra A, Seifert M, Hauck M, Brünner A, Doert T, Busse O, Weigand JJ. Peptization Control of Aluminum Chloride‐Containing Composites for Catalysts with Active Matrix. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202100011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Markus Seifert
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Mathias Hauck
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Andrea Brünner
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Thomas Doert
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Oliver Busse
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Jan J. Weigand
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| |
Collapse
|
28
|
Spinnen J, Fröhlich K, Sinner N, Stolk M, Ringe J, Shopperly L, Sittinger M, Dehne T, Seifert M. Therapies with CCL25 require controlled release via microparticles to avoid strong inflammatory reactions. J Nanobiotechnology 2021; 19:83. [PMID: 33766057 PMCID: PMC7992824 DOI: 10.1186/s12951-021-00830-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/10/2021] [Indexed: 01/15/2023] Open
Abstract
Background Chemokine therapy with C–C motif chemokine ligand 25 (CCL25) is currently under investigation as a promising approach to treat articular cartilage degeneration. We developed a delayed release mechanism based on Poly (lactic-co-glycolic acid) (PLGA) microparticle encapsulation for intraarticular injections to ensure prolonged release of therapeutic dosages. However, CCL25 plays an important role in immune cell regulation and inflammatory processes like T-cell homing and chronic tissue inflammation. Therefore, the potential of CCL25 to activate immune cells must be assessed more thoroughly before further translation into clinical practice. The aim of this study was to evaluate the reaction of different immune cell subsets upon stimulation with different dosages of CCL25 in comparison to CCL25 released from PLGA particles. Results Immune cell subsets were treated for up to 5 days with CCL25 and subsequently analyzed regarding their cytokine secretion, surface marker expression, polarization, and migratory behavior. The CCL25 receptor C–C chemokine receptor type 9 (CCR9) was expressed to a different extent on all immune cell subsets. Direct stimulation of peripheral blood mononuclear cells (PBMCs) with high dosages of CCL25 resulted in strong increases in the secretion of monocyte chemoattractant protein-1 (MCP-1), interleukin-8 (IL-8), interleukin-1β (IL-1β), tumor-necrosis-factor-α (TNF-α) and interferon-γ (IFN-γ), upregulation of human leukocyte antigen-DR (HLA-DR) on monocytes and CD4+ T-cells, as well as immune cell migration along a CCL25 gradient. Immune cell stimulation with the supernatants from CCL25 loaded PLGA microparticles caused moderate increases in MCP-1, IL-8, and IL-1β levels, but no changes in surface marker expression or migration. Both CCL25-loaded and unloaded PLGA microparticles induced an increase in IL-8 and MCP-1 release in PBMCs and macrophages, and a slight shift of the surface marker profile towards the direction of M2-macrophage polarization. Conclusions While supernatants of CCL25 loaded PLGA microparticles did not provoke strong inflammatory reactions, direct stimulation with CCL25 shows the critical potential to induce global inflammatory activation of human leukocytes at certain concentrations. These findings underline the importance of a safe and reliable release system in a therapeutic setup. Failure of the delivery system could result in strong local and systemic inflammatory reactions that could potentially negate the benefits of chemokine therapy. ![]()
Collapse
Affiliation(s)
- J Spinnen
- Tissue Engineering Laboratory, BIH Center for Regenerative Therapies, Department for Rheumatology and Clinical Immunology & Berlin Institute of Health at Charité-Universitätsmedizin Berli, BCRT, Charitéplatz 1, 10117, Berlin, Germany.
| | - K Fröhlich
- Tissue Engineering Laboratory, BIH Center for Regenerative Therapies, Department for Rheumatology and Clinical Immunology & Berlin Institute of Health at Charité-Universitätsmedizin Berli, BCRT, Charitéplatz 1, 10117, Berlin, Germany
| | - N Sinner
- Tissue Engineering Laboratory, BIH Center for Regenerative Therapies, Department for Rheumatology and Clinical Immunology & Berlin Institute of Health at Charité-Universitätsmedizin Berli, BCRT, Charitéplatz 1, 10117, Berlin, Germany
| | - M Stolk
- Tissue Engineering Laboratory, BIH Center for Regenerative Therapies, Department for Rheumatology and Clinical Immunology & Berlin Institute of Health at Charité-Universitätsmedizin Berli, BCRT, Charitéplatz 1, 10117, Berlin, Germany
| | - J Ringe
- Tissue Engineering Laboratory, BIH Center for Regenerative Therapies, Department for Rheumatology and Clinical Immunology & Berlin Institute of Health at Charité-Universitätsmedizin Berli, BCRT, Charitéplatz 1, 10117, Berlin, Germany
| | - L Shopperly
- Tissue Engineering Laboratory, BIH Center for Regenerative Therapies, Department for Rheumatology and Clinical Immunology & Berlin Institute of Health at Charité-Universitätsmedizin Berli, BCRT, Charitéplatz 1, 10117, Berlin, Germany
| | - M Sittinger
- Tissue Engineering Laboratory, BIH Center for Regenerative Therapies, Department for Rheumatology and Clinical Immunology & Berlin Institute of Health at Charité-Universitätsmedizin Berli, BCRT, Charitéplatz 1, 10117, Berlin, Germany
| | - T Dehne
- Tissue Engineering Laboratory, BIH Center for Regenerative Therapies, Department for Rheumatology and Clinical Immunology & Berlin Institute of Health at Charité-Universitätsmedizin Berli, BCRT, Charitéplatz 1, 10117, Berlin, Germany
| | - M Seifert
- Institute of Medical Immunology and Berlin Institute of Health Center for Regenerative Therapies, Institute of Medical Immunology, Charité-Universitaetsmedizin Berlin, corporate member of Freie Universitaet Berlin and Humboldt-Universitaet Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.,DZHK (German Center for Cardiovascular Research), partner site Berlin, Germany
| |
Collapse
|
29
|
Saavedra AC, Seifert M, Hannß M, Henle T, Lê-Anh M, Busse O, Weigand JJ. Peptization Control of Composite Materials Containing Water Glass for Spray Drying of Catalysts. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202000480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Markus Seifert
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Mariella Hannß
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Thomas Henle
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Mai Lê-Anh
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Oliver Busse
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| | - Jan J. Weigand
- Technische Universität Dresden Faculty of Chemistry and Food Chemistry 01062 Dresden Germany
| |
Collapse
|
30
|
Seifert M, Marschall MS, Gille T, Jonscher C, Busse O, Paasch S, Brunner E, Reschetilowski W, Weigand JJ. Ethanol to Aromatics on Modified H‐ZSM‐5 Part I: Interdependent Dealumination Actions. ChemCatChem 2020. [DOI: 10.1002/cctc.202001344] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Markus Seifert
- Chair of Inorganic Molecular Chemistry Faculty of Chemistry and Food Chemistry TU Dresden Mommsenstraße 4 01069 Dresden Germany
| | - Mathias S. Marschall
- Chair of Inorganic Molecular Chemistry Faculty of Chemistry and Food Chemistry TU Dresden Mommsenstraße 4 01069 Dresden Germany
| | - Torsten Gille
- Chair of Inorganic Molecular Chemistry Faculty of Chemistry and Food Chemistry TU Dresden Mommsenstraße 4 01069 Dresden Germany
| | - Clemens Jonscher
- Chair of Inorganic Molecular Chemistry Faculty of Chemistry and Food Chemistry TU Dresden Mommsenstraße 4 01069 Dresden Germany
| | - Oliver Busse
- Chair of Inorganic Molecular Chemistry Faculty of Chemistry and Food Chemistry TU Dresden Mommsenstraße 4 01069 Dresden Germany
| | - Silvia Paasch
- Chair of Bioanalytical Chemistry Faculty of Chemistry and Food Chemistry TU Dresden Bergstraße 66 01069 Dresden Germany
| | - Eike Brunner
- Chair of Bioanalytical Chemistry Faculty of Chemistry and Food Chemistry TU Dresden Bergstraße 66 01069 Dresden Germany
| | | | - Jan J. Weigand
- Chair of Inorganic Molecular Chemistry Faculty of Chemistry and Food Chemistry TU Dresden Mommsenstraße 4 01069 Dresden Germany
| |
Collapse
|
31
|
Seifert M, Marschall MS, Gille T, Jonscher C, Royla P, Busse O, Reschetilowski W, Weigand JJ. Ethanol to Aromatics on Modified H-ZSM-5 Part II: An Unexpected Low Coking. Chem Asian J 2020; 15:3878-3885. [PMID: 33006826 PMCID: PMC7756217 DOI: 10.1002/asia.202000961] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/10/2020] [Indexed: 12/04/2022]
Abstract
In this study a commercial H‐ZSM‐5 zeolite (Si/Al=11) was post‐synthetically modified by a combined dealumination procedure to adjust its catalytic properties for the selective formation of aromatics from ethanol. The solid‐state properties of original and modified zeolites are determined by structural, textural and acidity analysis. The formation of aromatics and durability of the zeolites were investigated depending on space velocity or contact time in the catalyst bed. In particular, the formation rate and desorption of aromatics from solid‐state surface as well as their tendency to form coke precursors by consecutive build‐up reactions determine the formation of coke. Therefore, the rate of build‐up and finished aromatization by hydride transfer (pre‐determined by the kind, location and geometric arrangement of surface acid sites) and the statistical number of reaction events until final desorption at the specific contact time have to be harmonized to increase aromatics yield and to decrease catalyst decay by coke simultaneously.
Collapse
Affiliation(s)
- Markus Seifert
- TU Dresden, Faculty of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Mommsenstraße 4, 01069, Dresden, Germany
| | - Mathias S Marschall
- TU Dresden, Faculty of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Mommsenstraße 4, 01069, Dresden, Germany
| | - Torsten Gille
- TU Dresden, Faculty of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Mommsenstraße 4, 01069, Dresden, Germany
| | - Clemens Jonscher
- TU Dresden, Faculty of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Mommsenstraße 4, 01069, Dresden, Germany
| | - Philipp Royla
- TU Dresden, Faculty of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Mommsenstraße 4, 01069, Dresden, Germany
| | - Oliver Busse
- TU Dresden, Faculty of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Mommsenstraße 4, 01069, Dresden, Germany
| | - Wladimir Reschetilowski
- TU Dresden, Faculty of Chemistry and Food Chemistry, Mommsenstraße 4, 01069, Dresden, Germany
| | - Jan J Weigand
- TU Dresden, Faculty of Chemistry and Food Chemistry, Chair of Inorganic Molecular Chemistry, Mommsenstraße 4, 01069, Dresden, Germany
| |
Collapse
|
32
|
Demetz E, Tymoszuk P, Hilbe R, Volani C, Haschka D, Heim C, Auer K, Lener D, Zeiger LB, Pfeifhofer-Obermair C, Boehm A, Obermair GJ, Ablinger C, Coassin S, Lamina C, Kager J, Petzer V, Asshoff M, Schroll A, Nairz M, Dichtl S, Seifert M, von Raffay L, Fischer C, Barros-Pinkelnig M, Brigo N, Valente de Souza L, Sopper S, Hirsch J, Graber M, Gollmann-Tepeköylü C, Holfeld J, Halper J, Macheiner S, Gostner J, Vogel GF, Pechlaner R, Moser P, Imboden M, Marques-Vidal P, Probst-Hensch NM, Meiselbach H, Strauch K, Peters A, Paulweber B, Willeit J, Kiechl S, Kronenberg F, Theurl I, Tancevski I, Weiss G. The haemochromatosis gene Hfe and Kupffer cells control LDL cholesterol homeostasis and impact on atherosclerosis development. Eur Heart J 2020; 41:3949-3959. [PMID: 32227235 DOI: 10.1093/eurheartj/ehaa140] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 10/16/2019] [Accepted: 02/18/2020] [Indexed: 12/12/2022] Open
Abstract
AIMS Imbalances of iron metabolism have been linked to the development of atherosclerosis. However, subjects with hereditary haemochromatosis have a lower prevalence of cardiovascular disease. The aim of our study was to understand the underlying mechanisms by combining data from genome-wide association study analyses in humans, CRISPR/Cas9 genome editing, and loss-of-function studies in mice. METHODS AND RESULTS Our analysis of the Global Lipids Genetics Consortium (GLGC) dataset revealed that single nucleotide polymorphisms (SNPs) in the haemochromatosis gene HFE associate with reduced low-density lipoprotein cholesterol (LDL-C) in human plasma. The LDL-C lowering effect could be phenocopied in dyslipidaemic ApoE-/- mice lacking Hfe, which translated into reduced atherosclerosis burden. Mechanistically, we identified HFE as a negative regulator of LDL receptor expression in hepatocytes. Moreover, we uncovered liver-resident Kupffer cells (KCs) as central players in cholesterol homeostasis as they were found to acquire and transfer LDL-derived cholesterol to hepatocytes in an Abca1-dependent fashion, which is controlled by iron availability. CONCLUSION Our results disentangle novel regulatory interactions between iron metabolism, KC biology and cholesterol homeostasis which are promising targets for treating dyslipidaemia but also provide a mechanistic explanation for reduced cardiovascular morbidity in subjects with haemochromatosis.
Collapse
Affiliation(s)
- Egon Demetz
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Piotr Tymoszuk
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Chiara Volani
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - David Haschka
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Christiane Heim
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Kristina Auer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Daniela Lener
- Department of Internal Medicine III, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Lucas B Zeiger
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Christa Pfeifhofer-Obermair
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Anna Boehm
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Gerald J Obermair
- Department of Physiology and Medical Physics, Medical University of Innsbruck, Fritz-Pregl-Straße 3, 6020 Innsbruck, Austria
- Division of Physiology, Karl Landsteiner University of Health Sciences, Dr.-Karl-Dorrek-Straße 30, 3500 Krems, Austria
| | - Cornelia Ablinger
- Department of Physiology and Medical Physics, Medical University of Innsbruck, Fritz-Pregl-Straße 3, 6020 Innsbruck, Austria
| | - Stefan Coassin
- Department of Genetics and Pharmacology, Institute of Genetic Epidemiology, Medical University of Innsbruck, Schöpfstraße 41, 6020 Innsbruck, Austria
| | - Claudia Lamina
- Department of Genetics and Pharmacology, Institute of Genetic Epidemiology, Medical University of Innsbruck, Schöpfstraße 41, 6020 Innsbruck, Austria
| | - Juliane Kager
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Verena Petzer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Malte Asshoff
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Andrea Schroll
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Stefanie Dichtl
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Laura von Raffay
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Christine Fischer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Marina Barros-Pinkelnig
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Natascha Brigo
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Lara Valente de Souza
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Sieghart Sopper
- Department of Internal Medicine V, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Jakob Hirsch
- Department of Cardiac Surgery, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Michael Graber
- Department of Cardiac Surgery, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Can Gollmann-Tepeköylü
- Department of Cardiac Surgery, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Johannes Holfeld
- Department of Cardiac Surgery, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Julia Halper
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Sophie Macheiner
- Department of Internal Medicine I, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Johanna Gostner
- Division of Medical Biochemistry, Medical University of Innsbruck, Innrain 80/IV, 6020 Innsbruck, Austria
| | - Georg F Vogel
- Department of Pediatrics I, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Raimund Pechlaner
- Department of Neurology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Patrizia Moser
- Department of Pathology, Innsbruck University Hospital, Anichstraße 35, 6020 Innsbruck, Austria
| | - Medea Imboden
- Swiss Tropical and Public Health Institute, Socinstraße 57, 4051 Basel, Switzerland
- Department of Public Health, University of Basel, Bernoullistraße 28, 4056 Basel, Switzerland
| | - Pedro Marques-Vidal
- Department of Internal Medicine, Lausanne University Hospital, Rue du Bugnon 46, 1011 Lausanne, Switzerland
| | - Nicole M Probst-Hensch
- Swiss Tropical and Public Health Institute, Socinstraße 57, 4051 Basel, Switzerland
- Department of Public Health, University of Basel, Bernoullistraße 28, 4056 Basel, Switzerland
| | - Heike Meiselbach
- Department of Nephrology and Hypertension, University Hospital Erlangen, Maximiliansplatz 2, 91054 Erlangen, Germany
| | - Konstantin Strauch
- Institute of Genetic Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
- Institute of Medical Informatics, Biometry and Epidemiology, Ludwig-Maximilians-Universität, Marchioninistraße 15, 81377 Munich, Germany
| | - Annette Peters
- Institute of Epidemiology II, Helmholtz Zentrum München-German Research Center for Environmental Health, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
- German Center for Diabetes Research, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
- German Center for Cardiovascular Research, Lazarettstraße 36, 80636 Munich, Germany
| | - Bernhard Paulweber
- First Department of Medicine, Paracelsus Medical University Salzburg, Strubergasse 21, 5020 Salzburg, Austria
| | - Johann Willeit
- Department of Neurology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Stefan Kiechl
- Department of Neurology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Florian Kronenberg
- Department of Genetics and Pharmacology, Institute of Genetic Epidemiology, Medical University of Innsbruck, Schöpfstraße 41, 6020 Innsbruck, Austria
| | - Igor Theurl
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Ivan Tancevski
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Guenter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| |
Collapse
|
33
|
Abstract
The Avian retina is far less known than that of mammals such as mouse and macaque, and detailed study is overdue. The chicken (Gallus gallus) has potential as a model, in part because research can build on developmental studies of the eye and nervous system. One can expect differences between bird and mammal retinas simply because whereas most mammals have three types of visual photoreceptor birds normally have six. Spectral pathways and colour vision are of particular interest, because filtering by oil droplets narrows cone spectral sensitivities and birds are probably tetrachromatic. The number of receptor inputs is reflected in the retinal circuitry. The chicken probably has four types of horizontal cell, there are at least 11 types of bipolar cell, often with bi- or tri-stratified axon terminals, and there is a high density of ganglion cells, which make complex connections in the inner plexiform layer. In addition, there is likely to be retinal specialisation, for example chicken photoreceptors and ganglion cells have separate peaks of cell density in the central and dorsal retina, which probably serve different types of behaviour.
Collapse
Affiliation(s)
- M Seifert
- Sussex Neuroscience, School of Life Sciences, University of Sussex, UK.
| | - T Baden
- Sussex Neuroscience, School of Life Sciences, University of Sussex, UK; Institute for Ophthalmic Research, University of Tuebingen, Germany
| | - D Osorio
- Sussex Neuroscience, School of Life Sciences, University of Sussex, UK
| |
Collapse
|
34
|
Effenberger M, Grabherr F, Mayr L, Schwaerzler J, Nairz M, Seifert M, Hilbe R, Seiwald S, Scholl-Buergi S, Fritsche G, Bellmann-Weiler R, Weiss G, Müller T, Adolph TE, Tilg H. Faecal calprotectin indicates intestinal inflammation in COVID-19. Gut 2020; 69:1543-1544. [PMID: 32312790 PMCID: PMC7211078 DOI: 10.1136/gutjnl-2020-321388] [Citation(s) in RCA: 200] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 04/13/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Maria Effenberger
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Felix Grabherr
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Lisa Mayr
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Julian Schwaerzler
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Stefanie Seiwald
- Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Sabine Scholl-Buergi
- Department of Pediatrics, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Gernot Fritsche
- Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Rosa Bellmann-Weiler
- Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Thomas Müller
- Department of Pediatrics, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Timon Erik Adolph
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Herbert Tilg
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| |
Collapse
|
35
|
Seifert M, Butter C, Reddy V, Neuzil P, Rinaldi A, James S, Turley A, Betts T, Arnold M, Riahi S, Delnoy P, Boersma L, Biffi M, Van Erven L, Schilling R. 863Leadless endocardial pacing improves symptoms in patients with failed conventional CRT implant in long term follow up. Europace 2020. [DOI: 10.1093/europace/euaa162.328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
EBR Systems, Inc
OnBehalf
WiSE-CRT and LV-SELECT study and POST-M REGISTRY
Background
The WiSE-CRT (Wireless stimulation endocardial) system has advantages over conventional epicardial CRT. Whenever conventional CRT failed to implant or failed to echocardiographic response, the WiSE-CRT was implanted as part of the WiSE CRT study (N = 13), as part of the LV-SELECT study (N = 35) or as part of the POST-M REGISTRY (N = 117) over the last 8 years. All these studies have reported high rates of clinical and echocardiographic response compared to conventional CRT.
Objectives
The purpose of this analysis was to determine the safety and clinical response in the largest available number of implanted patients (pts) with long term follow up of 2 years and the first, second and third generation of WiSE-CRT devices.
Method
All pts undergoing a WiSE-CRT implantation as part of the WiSE CRT study (N = 13), as part of the LV-SELECT study (N = 35) or as part of the POST-M REGISTRY (N = 117) were analysed (N = 165). Pts were followed-up for 24 months and considered CRT responders if an improvement in NYHA ≥ 1 class from baseline (pre-implant) was achieved.
Results
In total, 165 pts were implanted, demographics include: 68.2 ± 9.6 year’s old, 81.8% male, 49.7% with history of AFib and 54.5% non-ischaemic aetiology. The mean intrinsic QRS duration was 165.0 ± 32.3 msec (28 pts pace-maker dependent). 161 pts had the system successfully implanted with no major complications, 3 (1.8%) pts developed a pericardial effusion and 1 (0.6%) electrode was lost during implantation and recovered surgically. During the 24-month follow-up period, 20 (12.1%) pts died from any cause, 4 (2.4%) pts developed TIA or Stroke and 15 (9.1%) pts had pocket or transmitter infection. There was a significant improvement in NYHA functional class in 63.6% pts and an average improvement of -26.1 (-45.1, -7.1) msec in QRS duration.
Conclusion
Despite a history of failed conventional CRT implantation, pts undergoing CRT upgrades with a WiSE-CRT have a high success rate and a complication rate similar to previously described. In addition endocardial LV pacing led to symptomatic improvements in 64% of patients reaching the 24 month of follow up.
Abstract Figure 1: Forest Plot NYHA Responder Rat
Collapse
Affiliation(s)
- M Seifert
- Heart Center Brandenburg and Immanuel Klinikum, Bernau (Berlin), Germany
| | - C Butter
- Heart Center Brandenburg and Immanuel Klinikum, Bernau (Berlin), Germany
| | - V Reddy
- Mount Sinai Hospital, New York, United States of America
| | - P Neuzil
- Na Homolce Hospital, Prague, Czechia
| | - A Rinaldi
- Guy"s & St Thomas" NHS Foundation Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - S James
- James Cook University Hospital, Middlesbrough, United Kingdom of Great Britain & Northern Ireland
| | - A Turley
- James Cook University Hospital, Middlesbrough, United Kingdom of Great Britain & Northern Ireland
| | - T Betts
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - M Arnold
- University hospital Erlangen, Erlangen, Germany
| | - S Riahi
- Aalborg University Hospital, Aalborg, Denmark
| | - P Delnoy
- Isala Hospital, Zwolle, Netherlands (The)
| | - L Boersma
- Diakonessenhuis, Utrecht, Netherlands (The)
| | - M Biffi
- Policlinico S. Orsola-Malpighi, Bologna, Italy
| | - L Van Erven
- Leiden University Medical Center, Leiden, Netherlands (The)
| | - R Schilling
- St Bartholomew"s Hospital, London, United Kingdom of Great Britain & Northern Ireland
| |
Collapse
|
36
|
Tymoszuk P, Petzer V, Asshoff M, Schroll A, Seifert M, Hansen R, Milutinovic S, Strouse B, Hassig C, Weiss G, Theurl I. SAT0020 MOMELOTINIB, A JANUS KINASE 1/2 AND ACTIVIN RECEPTOR 1 INHIBITOR, AMELIORATES JOINT INFLAMMATION, SYSTEMIC TH17 DIFFERENTIATION AND ARTHRITIS-LINKED ANEMIA IN PRE-CLINICAL AUTOIMMUNE RA. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Janus kinases (JAKs) serve as signaling hubs orchestrating inflammation, innate and adaptive immunity and erythropoiesis. Unfortunately, some of these agents cause suppression of JAK-dependent erythropoiesis, thereby exacerbating inflammation-associated anemia, leading to potential under-dosing and reduced therapeutic benefit. We previously showed that the JAKi momelotinib (MMB) can correct anemia in a rat model of RA, an effect that has been clinically reproduced in myelofibrosis patients treated with MMB. Subsequently, the molecular basis for MMB’s anemia benefit was determined to be a consequence of its potent inhibition of Activin Receptor Type 1 (ACVR1), resulting in decreased hepcidin and, as a consequence, increased systemic iron availability and improved erythropoiesis.Objectives:The goal of the current study was to investigate the effects of MMB on arthritis in pre-clinical RA models.Methods:The anti-arthritic activity of daily administration of MMB was assessed in Streptococcus cell wall-induced arthritis in Lewis rats (PG-PS model) and in collagen antibody-induced arthritis (CAIA) in DBA/1 mice. Consecutive assessment of arthritis was performed by joint thickness measurements and paw scoring. Following 3 weeks of treatment, synovial immune cell infiltration and T cell subset differentiation was quantified. Cytokine gene expression was profiled by quantitative rt-PCR. Anemia was assessed by determination of blood hemoglobin and serum, spleen and liver iron levels.Results:MMB reduced inflammatory granulocyte and macrophage infiltration in synovial tissue by more than 60% at all tested doses as compared to vehicle treatment in PG-PS animals. Importantly, MMB treatment effectively decreased arthritogenic Th17 cell differentiation and overall CD4+ T cells in the synovia beginning at the lowest tested dose and coincided with complete remission of joint swelling at 25 mg/kg. Anti-arthritic activity of MMB was confirmed with significant reductions in arthritis scoring, which demonstrated non-inferiority versus the TNF-α inhibitor, etanercept, in the CAIA model. Consistent with its inhibitory activity on the ACVR1-hepcidin axis, MMB reduced circulating hepcidin levels and mobilized systemic iron, resulting in substantial improvement of the RA-associated anemia in rats.Conclusion:MMB is a highly efficacious anti-arthritic agent that ameliorates local joint inflammation and reduces the systemic differentiation of major arthritogenic effector cell population, Th17 lymphocytes. In accord with our previous report, MMB is distinct from other JAKi due to its ability to inhibit ACVR1 signaling leading to decreased plasma hepcidin, improved iron homeostasis and increased erythropoiesis. The dual anti-inflammatory and anemia-improving pharmacologic activities of MMB position it as a promising and differentiated therapeutic agent for the treatment of RA and other inflammatory diseases with an anemia component.Disclosure of Interests:Piotr Tymoszuk: None declared, Verena Petzer: None declared, Malte Asshoff: None declared, Andrea Schroll: None declared, Markus Seifert: None declared, Ryan Hansen Employee of: I’m a former employee of Sierra Oncology, Snezana Milutinovic Employee of: I’m a former employee of Sierra Oncology, Bryan Strouse Employee of: I’m an employee of Sierra Oncology, Christian Hassig Employee of: I am a former employee of Sierra Oncology, Guenter Weiss: None declared, Igor Theurl Grant/research support from: I have received research support from Sierra Oncology, Consultant of: I have consulted for Kymba Ltd.
Collapse
|
37
|
Danzinger S, Seifert M, Singer C. Inzidenz steigend und herausfordernd: Onkologie & 90 +. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0040-1713232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- S Danzinger
- Universitätsklinik für Frauenheilkunde, Mediznische Universität Wien
| | - M Seifert
- Universitätsklinik für Frauenheilkunde, Mediznische Universität Wien
| | - C Singer
- Universitätsklinik für Frauenheilkunde, Mediznische Universität Wien
| |
Collapse
|
38
|
Kurz K, Lanser L, Seifert M, Kocher F, Pölzl G, Weiss G. Anaemia, iron status, and gender predict the outcome in patients with chronic heart failure. ESC Heart Fail 2020; 7:1880-1890. [PMID: 32458571 PMCID: PMC7373900 DOI: 10.1002/ehf2.12755] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/20/2020] [Accepted: 04/27/2020] [Indexed: 12/11/2022] Open
Abstract
Aims Anaemia and iron deficiency (ID) are frequently found in patients with chronic heart failure (CHF) and associated with adverse outcome. However, it is unclear whether absolute [transferrin saturation (TSAT) <20%, ferritin <100 μg/L] or inflammation‐driven functional ID (TSAT <20%, ferritin >100 μg/L) with and without anaemia had similar or different consequences for such patients. Methods and results Within this retrospective cohort study, 2223 patients (1601 men and 622 women) with CHF, referred to our department, between 2000 and 2018, were followed for a median time of 84 months. Anaemia was found in 393 patients and was an independent predictor for an adverse outcome [HR 2.164 (95% CI 1.865–2.512), P < 0.001]. In 674 patients with available parameters of iron metabolism, ID was present in 228 patients and was associated with an unfavourable outcome [HR 1.499 (95% CI 1.158–1.940), P = 0.002]. ID was best predicting an adverse outcome in men ≤59 years, with heart failure with reduced ejection fraction, preserved kidney function, no inflammation, and a body mass index (BMI) ≥25.5 kg/m2. Functional ID in women and absolute ID in men were associated with poor prognosis. Of note, TSAT <20% but not low ferritin levels were predictive for an adverse outcome. Anaemic patients with high ferritin levels, advanced inflammation, older age, low BMI, male gender, and reduced glomerular filtration rate had the worst prognosis. Conclusions Anaemia and low tissue iron availability as reflected by TSAT <20% are negative predictors of outcome in patients with CHF. Systemic inflammation, renal function, BMI, age, and gender are important contributors for the clinical course.
Collapse
Affiliation(s)
- Katharina Kurz
- Department of Internal Medicine II, Innsbruck Medical University, Anichstraße 35, 6020, Innsbruck, Austria
| | - Lukas Lanser
- Department of Internal Medicine II, Innsbruck Medical University, Anichstraße 35, 6020, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anaemia Research, Innsbruck Medical University, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Innsbruck Medical University, Anichstraße 35, 6020, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anaemia Research, Innsbruck Medical University, Innsbruck, Austria
| | - Florian Kocher
- Department of Internal Medicine V, Innsbruck Medical University, Innsbruck, Austria
| | - Gerhard Pölzl
- Department of Internal Medicine III, Innsbruck Medical University, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Innsbruck Medical University, Anichstraße 35, 6020, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anaemia Research, Innsbruck Medical University, Innsbruck, Austria
| |
Collapse
|
39
|
Mayr L, Grabherr F, Schwärzler J, Reitmeier I, Sommer F, Gehmacher T, Niederreiter L, He GW, Ruder B, Kunz KTR, Tymoszuk P, Hilbe R, Haschka D, Feistritzer C, Gerner RR, Enrich B, Przysiecki N, Seifert M, Keller MA, Oberhuber G, Sprung S, Ran Q, Koch R, Effenberger M, Tancevski I, Zoller H, Moschen AR, Weiss G, Becker C, Rosenstiel P, Kaser A, Tilg H, Adolph TE. Dietary lipids fuel GPX4-restricted enteritis resembling Crohn's disease. Nat Commun 2020; 11:1775. [PMID: 32286299 PMCID: PMC7156516 DOI: 10.1038/s41467-020-15646-6] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 03/23/2020] [Indexed: 12/19/2022] Open
Abstract
The increased incidence of inflammatory bowel disease (IBD) has become a global phenomenon that could be related to adoption of a Western life-style. Westernization of dietary habits is partly characterized by enrichment with the ω-6 polyunsaturated fatty acid (PUFA) arachidonic acid (AA), which entails risk for developing IBD. Glutathione peroxidase 4 (GPX4) protects against lipid peroxidation (LPO) and cell death termed ferroptosis. We report that small intestinal epithelial cells (IECs) in Crohn’s disease (CD) exhibit impaired GPX4 activity and signs of LPO. PUFAs and specifically AA trigger a cytokine response of IECs which is restricted by GPX4. While GPX4 does not control AA metabolism, cytokine production is governed by similar mechanisms as ferroptosis. A PUFA-enriched Western diet triggers focal granuloma-like neutrophilic enteritis in mice that lack one allele of Gpx4 in IECs. Our study identifies dietary PUFAs as a trigger of GPX4-restricted mucosal inflammation phenocopying aspects of human CD. Dietary lipids are linked to the development of inflammatory bowel diseases through unclear mechanisms. Here, the authors report that dietary polyunsaturated fatty acids trigger intestinal inflammation resembling aspects of Crohn’s disease, which is restricted by glutathione peroxidase 4 in the intestinal epithelium.
Collapse
Affiliation(s)
- Lisa Mayr
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Felix Grabherr
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Julian Schwärzler
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Isabelle Reitmeier
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Felix Sommer
- Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Thomas Gehmacher
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Lukas Niederreiter
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Gui-Wei He
- Department of Medicine 1, Gastroenterology, Pneumology and Endocrinology, University Medical Center Erlangen, Erlangen, Germany
| | - Barbara Ruder
- Department of Medicine 1, Gastroenterology, Pneumology and Endocrinology, University Medical Center Erlangen, Erlangen, Germany
| | - Kai T R Kunz
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Piotr Tymoszuk
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - David Haschka
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria
| | - Clemens Feistritzer
- Department of Internal Medicine V, Haematology and Oncology, Medical University of Innsbruck, Innsbruck, Austria
| | - Romana R Gerner
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Barbara Enrich
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Nicole Przysiecki
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Mucosal Immunology, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus A Keller
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Georg Oberhuber
- Pathology Department of Innsbruck Medical University Hospital, Innsbruck, Austria
| | - Susanne Sprung
- Department of Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - Qitao Ran
- Department of Cell Systems and Anatomy, UT Health San Antonio, San Antonio, Texas, USA
| | - Robert Koch
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Maria Effenberger
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Ivan Tancevski
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria
| | - Heinz Zoller
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Alexander R Moschen
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Mucosal Immunology, Medical University of Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Christoph Becker
- Department of Medicine 1, Gastroenterology, Pneumology and Endocrinology, University Medical Center Erlangen, Erlangen, Germany
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Arthur Kaser
- Division of Gastroenterology and Hepatology, Department of Medicine, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
| | - Herbert Tilg
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Timon E Adolph
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria.
| |
Collapse
|
40
|
Danzinger S, Seifert M, Singer CF. Inzidenz steigend und herausfordernd: Onkologie & 90 +. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0039-3403414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- S Danzinger
- Universitätsklinik für Frauenheilkunde, Medizinische Universität Wien
| | - M Seifert
- Universitätsklinik für Frauenheilkunde, Medizinische Universität Wien
| | - C F Singer
- Universitätsklinik für Frauenheilkunde, Medizinische Universität Wien
| |
Collapse
|
41
|
Lanser L, Nemati N, Seifert M, Fuchs D, Weiss G, Pölzl G, Kurz K. Inflammation, iron and vitamin D metabolism in different cardiomyopathy aetiologies. Pteridines 2020. [DOI: 10.1515/pteridines-2020-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Immune activation coincides with disturbances in iron and vitamin D metabolism in patients with cardiomyopathy. In this study, we investigated whether there are differences regarding immune activation, iron and vitamin D metabolism between the different cardiomyopathy aetiologies.
Patients and methods: Parameters of iron metabolism (haemoglobin, iron, transferrin, transferrin saturation, ferritin, hepcidin), vitamin D metabolism (Ct-FGF23, parathormone, phosphate, vitamin D) and immune activation (C-reactive protein and neopterin) were determined in 149 patients (98 men, 51 women) with non-ischaemic cardiomyopathy.
Results: Patients with amyloid cardiomyopathy presented with higher neopterin, ferritin and hepcidin levels than other cardiomyopathy aetiologies. Furthermore, they showed the highest rate of cardiovascular events. C-reactive protein levels were significantly higher in patients with inflammatory cardiomyopathy. Patients with virus positive cardiomyopathy presented with significantly higher ferritin and Ct-FGF23 levels compared to patients with virus negative inflammatory cardiomyopathy.
Conclusion: This study indicates that there are some differences regarding the extent of immune activation and inflammation as well as alterations in iron metabolism disorders between different cardiomyopathy aetiologies. Further studies with larger patient cohorts are needed to investigate these findings more precisely.
Collapse
Affiliation(s)
- Lukas Lanser
- Department of Internal Medicine II , Medical University of Innsbruck , 6020 Innsbruck , Austria
| | - Nada Nemati
- Department of Internal Medicine II , Medical University of Innsbruck , 6020 Innsbruck , Austria
| | - Markus Seifert
- Department of Internal Medicine II , Medical University of Innsbruck , 6020 Innsbruck , Austria
| | - Dietmar Fuchs
- Division of Biological Chemistry , Biocenter, Medical University of Innsbruck , 6020 Innsbruck , Austria
| | - Günter Weiss
- Department of Internal Medicine II , Medical University of Innsbruck , 6020 Innsbruck , Austria
| | - Gerhard Pölzl
- Department of Internal Medicine III , Medical University of Innsbruck , 6020 Innsbruck , Austria
| | - Katharina Kurz
- Department of Internal Medicine II , Medical University of Innsbruck , 6020 Innsbruck , Austria
| |
Collapse
|
42
|
Mak EEH, Sng LH, Lee BWM, Peh JWL, Colman RE, Seifert M. The effect of sodium thiosulfate on the recovery of Mycobacterium chimaera from heater-cooler unit water samples. J Hosp Infect 2020; 105:252-257. [PMID: 32112827 DOI: 10.1016/j.jhin.2020.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 02/19/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Heater-cooler units (HCUs) have been implicated in the recent global outbreak of invasive Mycobacterium chimaera infection among patients following cardiothoracic surgery. Because infected patients tend to remain asymptomatic for extended periods, detection of M. chimaera from HCUs in real time is essential to halting the ongoing M. chimaera HCU-associated outbreak. Sample collection protocols to evaluate the presence of M. chimaera offer conflicting recommendations regarding the addition of sodium thiosulfate (NaT) during the collection process. AIM To study the effect of NaT on M. chimaera recovery and culture contamination. METHODS Seventy-six paired HCU water samples (with and without NaT) were collected, processed and cultured simultaneously into Lowenstein-Jensen slants, Middlebrook 7H10 agar plates, and mycobacterial growth indicator tubes (MGITs), and incubated at 37°C. A subset of 31 paired samples was additionally cultured on MGITs and incubated at 30°C. FINDINGS Of 76 samples incubated at 37°C in each of the three media, with and without NaT, M. chimaera was identified in at least one aliquot of 21 samples. CONCLUSION The presence of NaT did not significantly increase the probability of recovering M. chimaera in a multi-variable conditional logistic model and culture contamination rates were similar between aliquots with and without NaT. In the subset of samples cultured on MGITs at both 30°C and 37°C, the presence of NaT again was not associated with M. chimaera recovery, but was significantly associated with reduced culture contamination.
Collapse
Affiliation(s)
- E E H Mak
- Department of Medicine, University of California, San Diego, CA, USA
| | - L H Sng
- Singapore General Hospital, Singhealth, Singapore.
| | - B W M Lee
- Singapore General Hospital, Singhealth, Singapore
| | - J W L Peh
- Singapore General Hospital, Singhealth, Singapore
| | - R E Colman
- Department of Medicine, University of California, San Diego, CA, USA
| | - M Seifert
- Department of Medicine, University of California, San Diego, CA, USA.
| |
Collapse
|
43
|
Telser J, Volani C, Hilbe R, Seifert M, Brigo N, Paglia G, Weiss G. Metabolic reprogramming of Salmonella infected macrophages and its modulation by iron availability and the mTOR pathway. Microb Cell 2019; 6:531-543. [PMID: 31832425 PMCID: PMC6883347 DOI: 10.15698/mic2019.12.700] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Iron is an essential nutrient for immune cells and microbes, therefore the control of its homeostasis plays a decisive role for infections. Moreover, iron affects metabolic pathways by modulating the translational expression of the key tricarboxylic acid cycle (TCA) enzyme mitochondrial aconitase and the energy formation by mitochondria. Recent data provide evidence for metabolic re-programming of immune cells including macrophages during infection which is centrally controlled by mTOR. We herein studied the effects of iron perturbations on metabolic profiles in macrophages upon infection with the intracellular bacterium Salmonella enterica serovar Typhimurium and analysed for a link to the mTOR pathway. Infection of the murine macrophage cell line RAW264.7 with Salmonella resulted in the induction of mTOR activity, anaerobic glycolysis and inhibition of the TCA activity as reflected by reduced pyruvate and increased lactate levels. In contrast, iron supplementation to macrophages not only affected the mRNA expression of TCA and glycolytic enzymes but also resulted in metabolic reprogramming with increased pyruvate accumulation and reduced lactate levels apart from modulating the concentrations of several other metabolites. While mTOR slightly affected cellular iron homeostasis in infected macrophages, mTOR inhibition by rapamycin resulted in a significant growth promotion of bacteria. Importantly, iron further increased bacterial numbers in rapamycin treated macrophages, however, the metabolic profiles induced by iron in the presence or absence of mTOR activity differed in several aspects. Our data indicate, that iron not only serves as a bacterial nutrient but also acts as a metabolic modulator of the TCA cycle, partly reversing the Warburg effect and resulting in a pathogen friendly nutritional environment.
Collapse
Affiliation(s)
- Julia Telser
- Department of Internal Medicine II, Medical University of Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Austria
| | - Chiara Volani
- Department of Internal Medicine II, Medical University of Innsbruck, Austria.,EURAC Research, Institute for Biomedicine, Bolzano/Bozen, Italy
| | - Richard Hilbe
- Department of Internal Medicine II, Medical University of Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Austria
| | - Natascha Brigo
- Department of Internal Medicine II, Medical University of Innsbruck, Austria
| | | | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Austria
| |
Collapse
|
44
|
Krumreich FD, Seifert M, Santos RB, Gularte MA. Consumers' Impression of Minimally Processed Gala Apples Using Word Association. J Food Sci 2019; 84:2955-2960. [PMID: 31509251 DOI: 10.1111/1750-3841.14779] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 07/02/2019] [Accepted: 07/25/2019] [Indexed: 02/01/2023]
Abstract
This study aimed to identify consumers' preferences and impressions of minimally processed "Gala" cultivar apples, using preference tests and word associations. The study was conducted online via the Google Docs tool and sent out via social networks. The participants were 607 individuals, mostly women, mainly between the ages of 18 and 45, with education up to undergraduate and postgraduate level. As regards the preference for minimally processed apples, the profile of the consumer did not influence the choice. The profiles analyzed were gender and education. For the word association test, 11-word categories were formed, and among these, the most important aspect was appearance, followed by taste and texture, which was confirmed by correspondence analysis. Sample A (0 days-no storage) was the most preferred one, differing significantly from the other samples, whereas sample B (3 days of storage) and sample C (6 days of storage) were associated with characteristics for choice of product. The word association methodology revealed the consumer's impressions of the product, in addition to demonstrating simplicity, low cost, speed, and an exploratory character. PRACTICAL APPLICATION: Gender and level of schooling did not influence the choice of minimally processed apples. Appearance was the most cited word in the word association test. Word association is a simple, fast, inexpensive, and projective technique.
Collapse
Affiliation(s)
- F D Krumreich
- Post Graduate Program of Food Science and Technology, Faculty of Agronomy Eliseu Maciel, Federal Univ. of Pelotas, Pelotas, Rio Grande do Sul, 96010-900, Brazil
| | - M Seifert
- Post Graduate Program of Food Science and Technology, Faculty of Agronomy Eliseu Maciel, Federal Univ. of Pelotas, Pelotas, Rio Grande do Sul, 96010-900, Brazil
| | - R B Santos
- Post Graduate Program of Nutrition and Food, Faculty of Nutrition, Federal Univ. of Pelotas, Pelotas, Rio Grande do Sul, 96010-610, Brazil
| | - M A Gularte
- Post Graduate Program of Food Science and Technology, Faculty of Agronomy Eliseu Maciel, Federal Univ. of Pelotas, Pelotas, Rio Grande do Sul, 96010-900, Brazil.,Post Graduate Program of Nutrition and Food, Faculty of Nutrition, Federal Univ. of Pelotas, Pelotas, Rio Grande do Sul, 96010-610, Brazil
| |
Collapse
|
45
|
Tendl K, Monschein L, Exner R, Fitzal F, Bergen E, Seifert M, Singer C, Rudas M, Müllauer L, Bago-Horvath Z. Utilization and performance of the Prosigna® breast cancer prognostic gene signature assay at the Medical University of Vienna. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz095.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
46
|
Haschka D, Petzer V, Kocher F, Tschurtschenthaler C, Schaefer B, Seifert M, Sopper S, Sonnweber T, Feistritzer C, Arvedson TL, Zoller H, Stauder R, Theurl I, Weiss G, Tymoszuk P. Classical and intermediate monocytes scavenge non-transferrin-bound iron and damaged erythrocytes. JCI Insight 2019; 4:98867. [PMID: 30996139 PMCID: PMC6538345 DOI: 10.1172/jci.insight.98867] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 03/14/2019] [Indexed: 12/12/2022] Open
Abstract
Myelomonocytic cells are critically involved in iron turnover as aged RBC recyclers. Human monocytes are divided in 3 subpopulations of classical, intermediate, and nonclassical cells, differing in inflammatory and migratory phenotype. Their functions in iron homeostasis are, however, unclear. Here, we asked whether the functional diversity of monocyte subsets translates into differences in handling physiological and pathological iron species. By microarray data analysis and flow cytometry we identified a set of iron-related genes and proteins upregulated in classical and, in part, intermediate monocytes. These included the iron exporter ferroportin (FPN1), ferritin, transferrin receptor, putative transporters of non-transferrin-bound iron (NTBI), and receptors for damaged erythrocytes. Consequently, classical monocytes displayed superior scavenging capabilities of potentially toxic NTBI, which were augmented by blocking iron export via hepcidin. The same subset and, to a lesser extent, the intermediate population, efficiently cleared damaged erythrocytes in vitro and mediated erythrophagocytosis in vivo in healthy volunteers and patients having received blood transfusions. To summarize, our data underline the physiologically important function of the classical and intermediate subset in clearing NTBI and damaged RBCs. As such, these cells may play a nonnegligible role in iron homeostasis and limit iron toxicity in iron overload conditions. Human classical and intermediate monocytes mediate clearance of non-transferrin-bound iron and erythrophagocytosis.
Collapse
Affiliation(s)
| | | | | | | | - Benedikt Schaefer
- Department of Internal Medicine I, Medical University of Innsbruck, Innsbruck, Austria
| | | | | | | | | | - Tara L Arvedson
- Department of Oncology, Amgen Inc., Thousand Oaks, California, USA
| | - Heinz Zoller
- Department of Internal Medicine I, Medical University of Innsbruck, Innsbruck, Austria
| | | | | | | | | |
Collapse
|
47
|
Seifert M, Möller V, Claus T, Hölschermann F, Butter C. [Septicemia and endocarditis with multiple implants : CIED, TAVI, MK clip and LAA occluders]. Herzschrittmacherther Elektrophysiol 2019; 30:197-203. [PMID: 30969355 DOI: 10.1007/s00399-019-0618-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 03/24/2019] [Indexed: 11/27/2022]
Abstract
Infective endocarditis (IE) as well as septicemia in patients with implanted cardiac devices are severe diseases and diagnosis is often delayed due to a variety of misleading symptoms. Imaging with transesophageal echocardiography (TEE) and also microbiology play a key role in both the diagnosis and management. They are also useful for the prognostic assessment of patients with IE, for follow-up during treatment, during extraction of the implant and after surgery. In addition to antibiotic treatment, removal of the implant is also necessary, at least if vegetation is detected. Not only the removal of the implant but also the underlying cardiac disease, the frequently occurring severe cardiac insufficiency, the advanced age and the not uncommon high degree of fragility of the patients mean that decision making for treatment and management as well as renewed implantation after completion of treatment are a challenge. The optimal treatment is only possible with a close cooperation between various specialist disciplines and should therefore be carried out in experienced centers.
Collapse
Affiliation(s)
- M Seifert
- Abteilung für Kardiologie, Immanuel Klinikum Bernau und Herzzentrum Brandenburg, Hochschulklinikum der Medizinischen Hochschule Brandenburg, Ladeburger Str. 17, 16321, Bernau, Deutschland.
| | - V Möller
- Abteilung für Kardiologie, Immanuel Klinikum Bernau und Herzzentrum Brandenburg, Hochschulklinikum der Medizinischen Hochschule Brandenburg, Ladeburger Str. 17, 16321, Bernau, Deutschland
| | - T Claus
- Abteilung für Herzchirurgie, Immanuel Klinikum Bernau und Herzzentrum Brandenburg, Hochschulklinikum der Medizinischen Hochschule Brandenburg, Ladeburger Str. 17, 16321, Bernau, Deutschland
| | - F Hölschermann
- Abteilung für Kardiologie, Immanuel Klinikum Bernau und Herzzentrum Brandenburg, Hochschulklinikum der Medizinischen Hochschule Brandenburg, Ladeburger Str. 17, 16321, Bernau, Deutschland
| | - C Butter
- Abteilung für Kardiologie, Immanuel Klinikum Bernau und Herzzentrum Brandenburg, Hochschulklinikum der Medizinischen Hochschule Brandenburg, Ladeburger Str. 17, 16321, Bernau, Deutschland
| |
Collapse
|
48
|
Danzinger S, Fügerl A, Pfeifer C, Seifert M. Anämie und Ansprechen auf neoadjuvante Chemotherapie beim Mammakarzinom. Geburtshilfe Frauenheilkd 2019. [DOI: 10.1055/s-0039-1681986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- S Danzinger
- Universitätsklinik für Frauenheilkunde, Medizinische Universität Wien
| | - A Fügerl
- Universitätsklinik für Frauenheilkunde, Medizinische Universität Wien
| | - C Pfeifer
- Institut für Statistik, Universität Innsbruck
| | - M Seifert
- Universitätsklinik für Frauenheilkunde, Medizinische Universität Wien
| |
Collapse
|
49
|
Butter C, Fehrendt S, Möller V, Seifert M. [Leadless endocardial ultrasound based left ventricular stimulation : WISE CRT System: alternative to conventional methods]. Herzschrittmacherther Elektrophysiol 2018; 29:340-348. [PMID: 30406825 DOI: 10.1007/s00399-018-0605-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 09/10/2018] [Indexed: 02/03/2023]
Abstract
There are still several limitations in delivering cardiac resynchronisation therapy (CRT). After 6 months, 20-40% of patients fail to have clinical benefit due to various reasons. Endocardial stimulation rather than conventional epicardial pacing has been shown to be more physiological, improves electrical stimulation of the left ventricle (LV), has less dispersion of electrical activity and results in better resynchronisation. The WiSE™ CRT System ("Wireless stimulation endocardial system"; EBR Systems, Sunnyvale, CA, USA) provides an option for wireless, LV endocardial pacing triggered by a conventional right ventricular pacing spike from a co-implant. The feasibility of the WiSE™ CRT System has been successfully demonstrated in a population of failed cardiac resynchronisation patients with either failed implantation of a conventional system, nonresponse to conventional therapy or upgrade from pacemaker or defibrillator, where a conventional system was not an option. The WiSE™ CRT System is an innovative technology with promising safety, performance and preliminary efficacy.
Collapse
Affiliation(s)
- C Butter
- Immanuel Klinikum Bernau und Herzzentrum Brandenburg, Abteilung für Kardiologie, Hochschulklinikum der Medizinischen Hochschule Brandenburg, Ladeburger Straße 17, 16321, Bernau, Deutschland.
| | - S Fehrendt
- Immanuel Klinikum Bernau und Herzzentrum Brandenburg, Abteilung für Kardiologie, Hochschulklinikum der Medizinischen Hochschule Brandenburg, Ladeburger Straße 17, 16321, Bernau, Deutschland
| | - V Möller
- Immanuel Klinikum Bernau und Herzzentrum Brandenburg, Abteilung für Kardiologie, Hochschulklinikum der Medizinischen Hochschule Brandenburg, Ladeburger Straße 17, 16321, Bernau, Deutschland
| | - M Seifert
- Immanuel Klinikum Bernau und Herzzentrum Brandenburg, Abteilung für Kardiologie, Hochschulklinikum der Medizinischen Hochschule Brandenburg, Ladeburger Straße 17, 16321, Bernau, Deutschland
| |
Collapse
|
50
|
Oswald S, Lattner E, Seifert M, Menzel S. AES and XPS depth-profiling of annealed AlN/Ti-Al/AlN films for high-temperature applications in SAW metallization. SURF INTERFACE ANAL 2018. [DOI: 10.1002/sia.6393] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- S. Oswald
- IFW Dresden; Helmholtzstr. 20 01069 Dresden Germany
| | - E. Lattner
- IFW Dresden; Helmholtzstr. 20 01069 Dresden Germany
| | - M. Seifert
- IFW Dresden; Helmholtzstr. 20 01069 Dresden Germany
| | - S. Menzel
- IFW Dresden; Helmholtzstr. 20 01069 Dresden Germany
| |
Collapse
|