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Lüdke T, Paliege A, Kluge A, Olesch FT, Hilger G, Beleites T, Kemper M. Low-cost simulation model for ultrasound-guided punch biopsy and puncture: Construction manual and photo examples. Ultraschall Med 2024. [PMID: 38513702 DOI: 10.1055/a-2292-0530] [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] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
PURPOSE Ultrasound-guided puncture and punch biopsy pose a particular challenge in ultrasound examination training. These techniques should be learned and performed several times using a simulation model that is as realistic as possible before being applied to patients. While the use of agar-agar-based models is extensively documented in the literature, there is a discernible gap in publications specifically addressing their use in punch biopsy and puncture. The aim was to develop a cost-effective model for the simulation of ultrasound-guided interventions. MATERIALS AND METHODS The developed simulation model is based on the vegetable gelatine agar-agar. The agar-agar powder is boiled in water and colored. Various objects are added to the mass. Blueberries, olives, tomatoes, and cornichons imitate solid structures. Liquid-filled balloons are used to simulate cystic structures. Adding stones can make the exercises more difficult due to hyperechoic reflexes with distal shadowing. RESULTS With the model, ultrasound-guided puncture and punch biopsies could be successfully simulated, and ultrasound images can be generated for this purpose. The cost of a single model is about 2 euros. Production takes less than 2 hours, including cooling. The pure processing time is 30 minutes. The durability of the models is limited by mold, which occurs after 5 days when stored at room temperature and after 5 weeks in the refrigerator. CONCLUSION It was shown that it is possible to produce an inexpensive agar-agar-based ultrasound model in a short time and with easily available ingredients to learn ultrasound-guided puncture and punch biopsies.
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Affiliation(s)
- Theresa Lüdke
- Department of Otorhinolaryngology, Head and Neck Surgery, Dresden University Hospital, Dresden, Germany
| | - Alexander Paliege
- Department of Internal Medicine III, Nephrology, Dresden University Hospital, Dresden, Germany
| | - Anne Kluge
- Department of Otorhinolaryngology, Head and Neck Surgery, Dresden University Hospital, Dresden, Germany
| | - Falk-Tony Olesch
- Department of Otorhinolaryngology, Head and Neck Surgery, Dresden University Hospital, Dresden, Germany
| | - Gregor Hilger
- Department of Otorhinolaryngology, Head and Neck Surgery, Kreiskrankenhaus Stollberg gGmbH, Stollberg, Germany
| | - Thomas Beleites
- Department of Otorhinolaryngology, Head and Neck Surgery, Dresden University Hospital, Dresden, Germany
| | - Max Kemper
- Department of Otorhinolaryngology, Head and Neck Surgery, Dresden University Hospital, Dresden, Germany
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Bais T, Meijer E, Kramers BJ, Vart P, Vervloet M, Salih M, Bammens B, Demoulin N, Todorova P, Müller RU, Halbritter J, Paliege A, Gall ECL, Knebelmann B, Torra R, Ong ACM, Karet Frankl FE, Gansevoort RT. HYDROchlorothiazide versus placebo to PROTECT polycystic kidney disease patients and improve their quality of life: study protocol and rationale for the HYDRO-PROTECT randomized controlled trial. Trials 2024; 25:120. [PMID: 38355627 PMCID: PMC10865620 DOI: 10.1186/s13063-024-07952-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 01/24/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Autosomal dominant polycystic kidney disease (ADPKD) leads to progressive renal cyst formation and loss of kidney function in most patients. Vasopressin 2 receptor antagonists (V2RA) like tolvaptan are currently the only available renoprotective agents for rapidly progressive ADPKD. However, aquaretic side effects substantially limit their tolerability and therapeutic potential. In a preliminary clinical study, the addition of hydrochlorothiazide (HCT) to tolvaptan decreased 24-h urinary volume and appeared to increase renoprotective efficacy. The HYDRO-PROTECT study will investigate the long-term effect of co-treatment with HCT on tolvaptan efficacy (rate of kidney function decline) and tolerability (aquaresis and quality of life) in patients with ADPKD. METHODS The HYDRO-PROTECT study is an investigator-initiated, multicenter, double-blind, placebo-controlled, randomized clinical trial. The study is powered to enroll 300 rapidly progressive patients with ADPKD aged ≥ 18 years, with an eGFR of > 25 mL/min/1.73 m2, and on stable treatment with the highest tolerated dose of tolvaptan in routine clinical care. Patients will be randomly assigned (1:1) to daily oral HCT 25 mg or matching placebo treatment for 156 weeks, in addition to standard care. OUTCOMES The primary study outcome is the rate of kidney function decline (expressed as eGFR slope, in mL/min/1.73 m2 per year) in HCT versus placebo-treated patients, calculated by linear mixed model analysis using all available creatinine values from week 12 until the end of treatment. Secondary outcomes include changes in quality-of-life questionnaire scores (TIPS, ADPKD-UIS, EQ-5D-5L, SF-12) and changes in 24-h urine volume. CONCLUSION The HYDRO-PROTECT study will demonstrate whether co-treatment with HCT can improve the renoprotective efficacy and tolerability of tolvaptan in patients with ADPKD.
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Affiliation(s)
- Thomas Bais
- Department of Nephrology, University Medical Center Groningen, Groningen, The Netherlands
| | - Esther Meijer
- Department of Nephrology, University Medical Center Groningen, Groningen, The Netherlands
| | - Bart J Kramers
- Department of Nephrology, University Medical Center Groningen, Groningen, The Netherlands
| | - Priya Vart
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, Groningen, The Netherlands
| | - Marc Vervloet
- Department of Nephrology, Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Mahdi Salih
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Bert Bammens
- Department of Nephrology, Dialysis and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium
| | - Nathalie Demoulin
- Division of Nephrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Polina Todorova
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department 2 for Internal Medicine, Cologne, Germany
| | - Roman-Ulrich Müller
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department 2 for Internal Medicine, Cologne, Germany
| | - Jan Halbritter
- Department of Nephrology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Alexander Paliege
- Department of Nephrology, Universitätsklinikum Carl Gustav Carus Dresden, Dresden, Germany
| | - Emilie Cornec-Le Gall
- University Brest, Inserm, UMR 1078, GGB, Brest, 29609, France
- Service de Néphrologie, Hémodialyse et Transplantation Rénale, CHRU Brest, Brest, 29609, France
| | - Bertrand Knebelmann
- Department of Nephrology, Necker-Enfants Malades Hospital AP-HP, Paris, France
| | - Roser Torra
- Inherited Kidney Diseases, Nephrology Department, Fundació Puigvert, Institut d'Investigació Biomèdica Sant Pau (IIB-SANT PAU), Barcelona, Spain
| | - Albert C M Ong
- Academic Nephrology Unit, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - Fiona E Karet Frankl
- Department of Medical Genetics and Division of Renal Medicine, University of Cambridge, Cambridge, UK
| | - Ron T Gansevoort
- Department of Nephrology, University Medical Center Groningen, Groningen, The Netherlands.
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, PO Box 30.001, 9700, RB, Groningen, The Netherlands.
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Stumpf J, Anders L, Siepmann T, Schwöbel J, Karger C, Lindner T, Faulhaber-Walter R, Langer T, Escher K, Anding-Rost K, Seidel H, Hüther J, Pistrosch F, Martin H, Schewe J, Stehr T, Meistring F, Paliege A, Schneider D, Bast I, Steglich A, Gembardt F, Kessel F, Kröger H, Arndt P, Sradnick J, Frank K, Skrzypczyk S, Anft M, Klimova A, Mauer R, Roeder I, Tonn T, Babel N, Hugo C. 9-Month observational Dia-Vacc study of vaccine type influence on SARS-CoV-2 immunity in dialysis and kidney transplant patients. Vaccine 2024; 42:120-128. [PMID: 38114410 DOI: 10.1016/j.vaccine.2023.12.034] [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: 06/26/2023] [Revised: 12/05/2023] [Accepted: 12/09/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND SARS-CoV-2mRNA vaccination related seroconversion rates are reduced in dialysis and kidney transplant patients. METHODS We evaluated nine months follow up data in our observational Dia-Vacc study exploring specific cellular (interferon-γ release assay) or/and humoral immune responses after 2x SARS-CoV-2mRNA vaccination in 880 participants including healthy medical personnel (125-MP), dialysis patients (595-DP), kidney transplant recipients (111-KTR), and apheresis patients (49-AP) with positive seroconversion (de novo IgA or IgG antibody positivity by ELISA) after eight weeks. FINDINGS Nine months after first vaccination, receptor binding domain (RBD) antibodies were still positive in 90 % of MP, 86 % of AP, but only 55 %/48 % of DP/KTR, respectively. Seroconversion remained positive in 100 % of AP and 99·2 % of MP, but 86 %/81 % of DP/KTR, respectively. Compared to MP, DP but not KTR or AP were at risk for a strong RBD decline, while KTR kept lowest RBD values over time. By multivariate analysis, BNT162b2mRNA versus 1273-mRNA vaccine type was an independent risk factor for a strong decline of RBD antibodies. Within the DP group, only time on dialysis was another (inverse) risk factor for the DP group. Compared to humoral immunity, T-cell immunity decline was less prominent. INTERPRETATION While seroconverted KTR reach lowest RBD values over time, DP are at specific risk for a strong decline of RBD antibodies after successful SARS-CoV-2mRNA vaccination, which also depends on the vaccine type being used. Therefore, booster vaccinations for DP should be considered earlier compared to normal population.
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Affiliation(s)
- Julian Stumpf
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; KfH-Nierenzentrum Dresden, Dresden, Germany
| | | | - Torsten Siepmann
- KfH-Nierenzentrum am Klinikum Chemnitz, Krankenhaus Küchwald, Chemnitz, Germany
| | | | - Claudia Karger
- KfH-Nierenzentrum am Klinikum St. Georg, Leipzig, Germany
| | - Tom Lindner
- Division of Nephrology, University Hospital Leipzig, Leipzig, Germany
| | | | | | - Katja Escher
- KfH-Gesundheitszentrum Aue, Aue-Bad-Schlema, Germany
| | | | - Harald Seidel
- KfH-Nierenzentrum am Vogtland Krankenhaus Plauen, Plauen, Germany
| | | | | | - Heike Martin
- Nephrologisches Zentrum Zwickau, Zwickau, Germany
| | - Jens Schewe
- Dialyse- und Nierenambulanz Sebnitz, Sebnitz, Germany
| | | | - Frank Meistring
- KfH-Nierenzentrum am Städtischen Klinikum Görlitz, Görlitz, Germany
| | - Alexander Paliege
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Daniel Schneider
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | | | - Anne Steglich
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Florian Gembardt
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Friederike Kessel
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Hannah Kröger
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Patrick Arndt
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Jan Sradnick
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Kerstin Frank
- Institut für Transfusionsmedizin Plauen, DRK-Blutspendedienst Nord-Ost gemeinnützige GmbH, Plauen, Germany
| | - Sarah Skrzypczyk
- Center for Translational Medicine and Immune Diagnostics Laboratory, Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, Germany
| | - Moritz Anft
- Center for Translational Medicine and Immune Diagnostics Laboratory, Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, Germany
| | - Anna Klimova
- National Center for Tumor Diseases (NCT) Partner Site Dresden, Dresden, Germany
| | - René Mauer
- Faculty of Medicine Carl Gustav Carus, Institute for Medical Informatics and Biometry (IMB), Technische Universität, Dresden, Germany
| | - Ingo Roeder
- Faculty of Medicine Carl Gustav Carus, Institute for Medical Informatics and Biometry (IMB), Technische Universität, Dresden, Germany
| | - Torsten Tonn
- Institute for Transfusion Medicine, German Red Cross Blood Donation Service North-East, Dresden, Germany; Faculty of Medicine Carl Gustav Carus, Transfusion Medicine, Technische Universität, Dresden, Germany
| | - Nina Babel
- Center for Translational Medicine and Immune Diagnostics Laboratory, Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin-Brandenburg Center for Regenerative Therapies, and Institute of Medical Immunology, Germany
| | - Christian Hugo
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; KfH-Nierenzentrum Dresden, Dresden, Germany.
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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, 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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.
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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.
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Lafayette R, Kristensen J, Stone A, Floege J, Tesař V, Trimarchi H, Zhang H, Eren N, Paliege A, Reich HN, Rovin BH, Barratt J. Efficacy and safety of a targeted-release formulation of budesonide in patients with primary IgA nephropathy (NefIgArd): 2-year results from a randomised phase 3 trial. Lancet 2023; 402:859-870. [PMID: 37591292 DOI: 10.1016/s0140-6736(23)01554-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/17/2023] [Accepted: 07/21/2023] [Indexed: 08/19/2023]
Abstract
BACKGROUND IgA nephropathy is a chronic immune-mediated kidney disease and a major cause of kidney failure worldwide. The gut mucosal immune system is implicated in its pathogenesis, and Nefecon is a novel, oral, targeted-release formulation of budesonide designed to act at the gut mucosal level. We present findings from the 2-year, phase 3 NefIgArd trial of Nefecon in patients with IgA nephropathy. METHODS In this phase 3, multicentre, randomised, double-blind, placebo-controlled trial, adult patients (aged ≥18 years) with primary IgA nephropathy, estimated glomerular filtration rate (eGFR) 35-90 mL/min per 1·73 m2, and persistent proteinuria (urine protein-creatinine ratio ≥0·8 g/g or proteinuria ≥1 g/24 h) despite optimised renin-angiotensin system blockade were enrolled at 132 hospital-based clinical sites in 20 countries worldwide. Patients were randomly assigned (1:1) to receive 16 mg/day oral capsules of Nefecon or matching placebo for 9 months, followed by a 15-month observational follow-up period off study drug. Randomisation via an interactive response technology system was stratified according to baseline proteinuria (<2 or ≥2 g/24 h), baseline eGFR (<60 or ≥60 mL/min per 1·73 m2), and region (Asia-Pacific, Europe, North America, or South America). Patients, investigators, and site staff were masked to treatment assignment throughout the 2-year trial. Optimised supportive care was also continued throughout the trial. The primary efficacy endpoint was time-weighted average of eGFR over 2 years. Efficacy and safety analyses were done in the full analysis set (ie, all randomly assigned patients). The trial was registered on ClinicalTrials.gov, NCT03643965, and is completed. FINDINGS Patients were recruited to the NefIgArd trial between Sept 5, 2018, and Jan 20, 2021, with 364 patients (182 per treatment group) randomly assigned in the full analysis set. 240 (66%) patients were men and 124 (34%) were women, and 275 (76%) identified as White. The time-weighted average of eGFR over 2 years showed a statistically significant treatment benefit with Nefecon versus placebo (difference 5·05 mL/min per 1·73 m2 [95% CI 3·24 to 7·38], p<0·0001), with a time-weighted average change of -2·47 mL/min per 1·73 m2 (95% CI -3·88 to -1·02) reported with Nefecon and -7·52 mL/min per 1·73 m2 (-8·83 to -6·18) reported with placebo. The most commonly reported treatment-emergent adverse events during treatment with Nefecon were peripheral oedema (31 [17%] patients, vs placebo, seven [4%] patients), hypertension (22 [12%] vs six [3%]), muscle spasms (22 [12%] vs seven [4%]), acne (20 [11%] vs two [1%]), and headache (19 [10%] vs 14 [8%]). No treatment-related deaths were reported. INTERPRETATION A 9-month treatment period with Nefecon provided a clinically relevant reduction in eGFR decline and a durable reduction in proteinuria versus placebo, providing support for a disease-modifying effect in patients with IgA nephropathy. Nefecon was also well tolerated, with a safety profile as expected for a locally acting oral budesonide product. FUNDING Calliditas Therapeutics.
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Affiliation(s)
- Richard Lafayette
- Division of Nephrology, Department of Medicine, Stanford University, Stanford, CA, USA.
| | | | | | - Jürgen Floege
- Department of Nephrology and Clinical Immunology, Rheinisch-Westfälische Technische Hochschule Aachen University Hospital, Aachen, Germany
| | - Vladimir Tesař
- Department of Nephrology, First Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic
| | - Hernán Trimarchi
- Nephrology Service, Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - Hong Zhang
- Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, Beijing, China
| | - Necmi Eren
- Department of Nephrology, Kocaeli University, Kocaeli, Turkey
| | - Alexander Paliege
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Heather N Reich
- Division of Nephrology, University Health Network, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Brad H Rovin
- Division of Nephrology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Jonathan Barratt
- College of Medicine Biological Sciences and Psychology, University of Leicester, Leicester, UK
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Barratt J, Lafayette R, Kristensen J, Stone A, Cattran D, Floege J, Tesar V, Trimarchi H, Zhang H, Eren N, Paliege A, Rovin BH, Karl A, Losisolo P, Trimarchi H, Hoyos IG, Lampo MG, Monkowski M, De La Fuente J, Alvarez M, Stoppa D, Chiurchiu C, Novoa PA, Orias M, Barron MB, Giotto A, Arriola M, Cassini E, Maldonado R, Dionisi MP, Ryan J, Toussaint N, Luxton G, Peh CA, Levidiotis V, Francis R, Phoon R, Fedosiuk E, Toropilov D, Yakubtsevich R, Mikhailova E, Bovy C, Demoulin N, Hougardy JM, Maes B, Speeckaert M, Laurin LP, Barbour S, Masse M, Hladunewich M, Reich H, Cournoyer S, Tennankore K, Barbour S, Lv J, Liu Z, Wang C, Li S, Luo Q, Ni Z, Yan T, Fu P, Cheng H, Liu B, Lu W, Wang J, Chen Q, Wang D, Xiong Z, Chen M, Xu Y, Wei J, Pai P, Chen L, Rehorova J, Maixnerova D, Safranek R, Rychlik I, Hruby M, Makela S, Vaaraniemi K, Ortiz F, Alamartine E, Daroux M, Cartery C, Vrtovsnik F, Serre JE, Stamellou E, Vielhauer V, Hugo C, Budde K, Otte B, Nitschke M, Ntounousi E, Boletis I, Papagianni A, Goumenos D, Stylianou K, Zermpala S, Esposito C, Cozzolino MG, Viganò SM, Gesualdo L, Nowicki M, Stompor T, Kurnatowska I, Kim SG, Kim YL, Na KR, Kim DK, Kim SH, Porras LQ, Garcia ER, Pamplona IA, Segarra A, Goicoechea M, Fellstrom B, Lundberg S, Hemmingsson P, Guron G, Sandell A, Chen CH, Tokgoz B, Duman S, Altiparmak MR, Ergul M, Maxwell P, Mark P, McCafferty K, Khwaja A, Cheung CK, Hall M, Power A, Kanigicherla D, Baker R, Moriarty J, Mohamed A, Aiello J, Canetta P, Ayoub I, Robinson D, Thakar S, Mottl A, Sachmechi I, Fischbach B, Singh H, Mulhern J, Kamal F, Linfert D, Rizk D, Wadhwani S, Sarav M, Campbell K, Coppock G, Luciano R, Sedor J, Avasare R, Lau WL. Results from part A of the multi-center, double-blind, randomized, placebo-controlled NefIgArd trial, which evaluated targeted-release formulation of budesonide for the treatment of primary immunoglobulin A nephropathy. Kidney Int 2023; 103:391-402. [PMID: 36270561 DOI: 10.1016/j.kint.2022.09.017] [Citation(s) in RCA: 72] [Impact Index Per Article: 72.0] [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: 07/01/2022] [Revised: 09/23/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022]
Abstract
The therapeutic potential of a novel, targeted-release formulation of oral budesonide (Nefecon) for the treatment of IgA nephropathy (IgAN) was first demonstrated by the phase 2b NEFIGAN trial. To verify these findings, the phase 3 NefigArd trial tested the efficacy and safety of nine months of treatment with Nefecon (16 mg/d) versus placebo in adult patients with primary IgAN at risk of progressing to kidney failure (ClinicalTrials.gov: NCT03643965). NefIgArd was a multicenter, randomized, double-blind, placebo-controlled two-part trial. In Part A, 199 patients with IgAN were treated with Nefecon or placebo for nine months and observed for an additional three months. The primary endpoint for Part A was 24-hour urine protein-to-creatinine ratio (UPCR) after nine months. Secondary efficacy outcomes evaluated included estimated glomerular filtration rate (eGFR) at nine and 12 months and the UPCR at 12 months. At nine months, UPCR was 27% lower in the Nefecon group compared with placebo, along with a benefit in eGFR preservation corresponding to a 3.87 ml/min/1.73 m2 difference versus placebo (both significant). Nefecon was well-tolerated, and treatment-emergent adverse events were mostly mild to moderate in severity and reversible. Part B is ongoing and will be reported on later. Thus, NefIgArd is the first phase 3 IgA nephropathy trial to show clinically important improvements in UPCR and eGFR and confirms the findings from the phase 2b NEFIGAN study.
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Affiliation(s)
- Jonathan Barratt
- College of Medicine Biological Sciences and Psychology, University of Leicester, Leicester, UK
| | - Richard Lafayette
- Division of Nephrology, Department of Medicine, Stanford University, Stanford, California, USA
| | | | | | - Daniel Cattran
- Division of Nephrology, Toronto General Hospital Research Institute, University of Toronto, Toronto, Ontario, Canada
| | - Jürgen Floege
- Department of Nephrology and Clinical Immunology, Rheinisch Westfälische Technische Hochschule Aachen University Hospital, Aachen, Germany
| | - Vladimir Tesar
- Department of Nephrology, 1st School of Medicine and General University Hospital, Charles University, Prague, Czech Republic
| | - Hernán Trimarchi
- Nephrology Service, Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - Hong Zhang
- Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, Beijing, China
| | - Necmi Eren
- Department of Nephrology, Kocaeli University, Kocaeli, Turkey
| | - Alexander Paliege
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Brad H Rovin
- Division of Nephrology, the Ohio State University Wexner Medical Center, Columbus, Ohio, USA.
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Labes R, Dong L, Mrowka R, Bachmann S, von Vietinghoff S, Paliege A. Annexin A1 exerts renoprotective effects in experimental crescentic glomerulonephritis. Front Physiol 2022; 13:984362. [PMID: 36311242 PMCID: PMC9605209 DOI: 10.3389/fphys.2022.984362] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/23/2022] [Indexed: 11/19/2022] Open
Abstract
Non-resolving inflammation plays a critical role during the transition from renal injury towards end-stage renal disease. The glucocorticoid-inducible protein annexin A1 has been shown to function as key regulator in the resolution phase of inflammation, but its role in immune-mediated crescentic glomerulonephritis has not been studied so far. Methods: Acute crescentic glomerulonephritis was induced in annexin A1-deficient and wildtype mice using a sheep serum against rat glomerular basement membrane constituents. Animals were sacrificed at d5 and d10 after nephritis induction. Renal leukocyte abundance was studied by immunofluorescence and flow cytometry. Alterations in gene expression were determined by RNA-Seq and gene ontology analysis. Renal levels of eicosanoids and related lipid products were measured using lipid mass spectrometry. Results: Histological analysis revealed an increased number of sclerotic glomeruli and aggravated tubulointerstitial damage in the kidneys of annexin A1-deficient mice compared to the wildtype controls. Flow cytometry analysis confirmed an increased number of CD45+ leukocytes and neutrophil granulocytes in the absence of annexin A1. Lipid mass spectrometry showed elevated levels of prostaglandins PGE2 and PGD2 and reduced levels of antiinflammatory epoxydocosapentaenoic acid regioisomers. RNA-Seq with subsequent gene ontology analysis revealed induction of gene products related to leukocyte activation and chemotaxis as well as regulation of cytokine production and secretion. Conclusion: Intrinsic annexin A1 reduces proinflammatory signals and infiltration of neutrophil granulocytes and thereby protects the kidney during crescentic glomerulonephritis. The annexin A1 signaling cascade may therefore provide novel targets for the treatment of inflammatory kidney disease.
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Affiliation(s)
- Robert Labes
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Lei Dong
- Nephrology Department, Tongji Hospital, Tongji College, Huazhong University of Science and Technology, Wuhan, China
| | - Ralf Mrowka
- Klinik für Innere Medizin III, AG Experimentelle Nephrologie, Universitätsklinikum Jena, Jena, Germany
| | - Sebastian Bachmann
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Sibylle von Vietinghoff
- Nephrology Section, First Medical Clinic, University Clinic and Rheinische Friedrich-Wilhelms Universität Bonn, Bonn, Germany
| | - Alexander Paliege
- Division of Nephrology, Department of Internal Medicine III, Technische Universität Dresden, Dresden, Germany
- Berlin Institute of Health (BIH), Berlin, Germany
- *Correspondence: Alexander Paliege,
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Stumpf J, Siepmann T, Schwöbel J, Glombig G, Paliege A, Steglich A, Gembardt F, Kessel F, Kröger H, Arndt P, Sradnick J, Frank K, Klimova A, Mauer R, Tonn T, Hugo C. MMF/MPA Is the Main Mediator of a Delayed Humoral Response With Reduced Antibody Decline in Kidney Transplant Recipients After SARS-CoV-2 mRNA Vaccination. Front Med (Lausanne) 2022; 9:928542. [PMID: 35872777 PMCID: PMC9300891 DOI: 10.3389/fmed.2022.928542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 04/25/2022] [Accepted: 06/07/2022] [Indexed: 01/14/2023] Open
Abstract
Kidney transplant recipients (KTR) show significantly lower seroconversion rates after SARS-CoV-2 mRNA vaccination compared to dialysis patients (DP). Mycophenolate mofetil or mycophenolic acid (MMF/MPA) in particular has been identified as a risk factor for seroconversion failure. While the majority of all KTR worldwide receive MMF/MPA for immunosuppressive therapy, its impact on antibody decline in seroconverted KTR still remains unclear. In an observational study (NCT04799808), we investigated whether 132 seroconverted KTR (anti-spike S1 IgG or IgA positive after 2 vaccinations) show a more rapid antibody decline with MMF/MPA than those without this medication. A total of 2 months after mRNA vaccination, average anti-spike S1 IgG levels of KTR with MMF/MPA were lower than without (p = 0.001), while no differences between these two groups were observed after 6 months (p = 0.366). Similar results were obtained for anti-RBD IgG antibodies (T2 p = 0.003 and T3 p = 0.135). The probability of severe IgG decline with MMF/MPA was three times lower than without (p = 0.003, OR 0.236, 95% CI 0.091-0.609). In the multivariate analysis, neither immunosuppressants, such as calcineurin inhibitors, mTOR inhibitors (mTOR-I; mechanistic target of rapamycin), glucocorticoids, nor vaccine type, sex, or age showed a significant influence on IgG titer decline between 2 and 6 months. For the decision on additional booster vaccinations, we consider immunosurveillance to be needed as an integral part of renal transplant follow-up after SARS-CoV-2 mRNA vaccination. Not only the lack of seroconversion but also the peak and titer decline of the specific IgG and RBD IgG antibody formation after two mRNA vaccinations is significantly influenced by MMF/MPA.
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Affiliation(s)
- Julian Stumpf
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,KfH-Nierenzentrum Dresden, Dresden, Germany
| | - Torsten Siepmann
- KfH-Nierenzentrum am Klinikum Chemnitz, Krankenhaus Küchwald, Chemnitz, Germany
| | | | - Grit Glombig
- KfH-Nierenzentrum am Klinikum St. Georg, Leipzig, Germany
| | - Alexander Paliege
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Anne Steglich
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Florian Gembardt
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Friederike Kessel
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Hannah Kröger
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Patrick Arndt
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Jan Sradnick
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Kerstin Frank
- Institut für Transfusionsmedizin Plauen, DRK-Blutspendedienst Nord-Ost gemeinnützige GmbH, Plauen, Germany
| | - Anna Klimova
- National Center for Tumor Diseases (NCT) Dresden, Dresden, Germany
| | - René Mauer
- Faculty of Medicine Carl Gustav Carus, Institute for Medical Informatics and Biometry (IMB), Technische Universität Dresden, Dresden, Germany
| | - Torsten Tonn
- Institute for Transfusion Medicine, German Red Cross Blood Donation Service North-East, Dresden, Germany.,Faculty of Medicine Carl Gustav Carus, Transfusion Medicine, Technische Universität Dresden, Dresden, Germany
| | - Christian Hugo
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,KfH-Nierenzentrum Dresden, Dresden, Germany
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10
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Grothgar E, Goerlich N, Samans B, Skopnik CM, Metzke D, Klocke J, Prskalo L, Freund P, Wagner L, Duerr M, Matz M, Olek S, Budde K, Paliege A, Enghard P. Urinary CD8+HLA-DR+ T Cell Abundance Non-invasively Predicts Kidney Transplant Rejection. Front Med (Lausanne) 2022; 9:928516. [PMID: 35911418 PMCID: PMC9334669 DOI: 10.3389/fmed.2022.928516] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 06/23/2022] [Indexed: 12/05/2022] Open
Abstract
Early detection of kidney transplant (KT) rejection remains a challenge in patient care. Non-invasive biomarkers hold high potential to detect rejection, adjust immunosuppression, and monitor KT patients. So far, no approach has fully satisfied requirements to innovate routine monitoring of KT patients. In this two-center study we analyzed a total of 380 urine samples. T cells and tubular epithelial cells were quantified in KT patients with graft deterioration using flow cytometry. Epigenetic urine cell quantification was used to confirm flow cytometric results. Moreover, a cohort of KT patients was followed up during the first year after transplantation, tracking cell subsets over time. Abundance of urinary cell counts differed in patients with and without rejection. Most strikingly, various T cell subsets were enriched in patients with T cell-mediated rejection (TCMR) compared to patients without TCMR. Among T cell subsets, CD8+HLA-DR+ T cells were most distinctive (AUC = 0.91, Spec.: 95.9%, Sens.: 76.5%). Epigenetic analysis confirmed T cell and tubular epithelial cell quantities as determined by flow cytometry. Urinary T cell abundance in new KT patients decreased during their first year after transplantation. In conclusion urinary T cells reflect intrarenal inflammation in TCMR. T cell subsets yield high potential to monitor KT patients and detect rejection. Hereby we present a promising biomarker to non-invasively diagnose TCMR.
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Affiliation(s)
- Emil Grothgar
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
- *Correspondence: Emil Grothgar
| | - Nina Goerlich
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
- Berlin Institute of Health (BIH) at Charité–Universitätsmedizin Berlin, Berlin, Germany
- Nina Goerlich
| | - Bjoern Samans
- Ivana Türbachova Laboratory for Epigenetics, Precision for Medicine GmbH, Berlin, Germany
| | - Christopher M. Skopnik
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
| | - Diana Metzke
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
| | - Jan Klocke
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
| | - Luka Prskalo
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
| | - Paul Freund
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
| | - Leonie Wagner
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
| | - Michael Duerr
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Mareen Matz
- Berlin Institute of Health (BIH) at Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Sven Olek
- Ivana Türbachova Laboratory for Epigenetics, Precision for Medicine GmbH, Berlin, Germany
| | - Klemens Budde
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | | | - Philipp Enghard
- Department of Nephrology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
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Stumpf J, Schwöbel J, Lindner T, Anders L, Siepmann T, Karger C, Hüther J, Martin H, Müller P, Faulhaber-Walter R, Langer T, Schirutschke H, Stehr T, Meistring F, Pietzonka A, Anding-Rost K, Escher K, Pistrosch F, Schewe J, Seidel H, Barnett K, Pluntke T, Cerny S, Paliege A, Bast I, Steglich A, Gembardt F, Kessel F, Kröger H, Arndt P, Sradnick J, Frank K, Klimova A, Mauer R, Grählert X, Tonn T, Hugo C. Risk of strong antibody decline in dialysis and transplant patients after SARS-CoV-2mRNA vaccination: Six months data from the observational Dia-Vacc study. Lancet Reg Health Eur 2022; 17:100371. [PMID: 35434688 PMCID: PMC8995854 DOI: 10.1016/j.lanepe.2022.100371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Background Vulnerable dialysis and kidney transplant patients show impaired seroconversion rates compared to medical personnel eight weeks after SARS-CoV-2mRNA vaccination. Methods We evaluated six months follow up data in our observational Dia-Vacc study exploring specific cellular (interferon-γ release assay) or/and humoral immune responses after 2x SARS-CoV-2mRNA vaccination in 1205 participants including medical personnel (125 MP), dialysis patients (970 DP) and kidney transplant recipients (110 KTR) with seroconversion (de novo IgA or IgG antibody positivity by ELISA) after eight weeks. Findings Six months after vaccination, seroconversion remained positive in 98% of MP, but 91%/87% of DP/KTR (p = 0·005), respectively. Receptor binding domain-IgG (RBD-IgG) antibodies were positive in 98% of MP, but only 68%/57% of DP/KTR (p < 0·001), respectively. Compared to MP, DP and KTR were at risk for a strong IgG or RBD-IgG decline (p < 0·001). Within the DP but not KTR group male gender, peritoneal dialysis, short time on dialysis, BNT162b2mRNA vaccine, immunosuppressive drug use and diabetes mellitus were independent risk factors for a strong decline of IgG or RBD antibodies. The percentage of cellular immunity decline was similar in all groups. Interpretation Both vulnerable DP and KTR groups are at risk for a strong decline for IgG and RBD antibodies. In KTR, antibody titres peak at a markedly lower level and accelerated antibody decline is mixed with a delayed/increasing IgG, RBD-IgG, or cellular immune response in a 16% fraction of patients. In both populations, immune monitoring should be used for early timing of additional booster vaccinations. Funding This study was funded by the Else Kröner Fresenius Stiftung, Bad Homburg v. d. H., grant number Fördervertrag EKFS 2021_EKSE.27.
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12
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Stumpf J, Tonnus W, Paliege A, Rettig R, Steglich A, Gembardt F, Kessel F, Kröger H, Arndt P, Sradnick J, Frank K, Tonn T, Hugo C. Cellular and Humoral Immune Responses After 3 Doses of BNT162b2 mRNA SARS-CoV-2 Vaccine in Kidney Transplant. Transplantation 2021; 105:e267-e269. [PMID: 34342963 PMCID: PMC8549130 DOI: 10.1097/tp.0000000000003903] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 07/03/2021] [Indexed: 12/31/2022]
Abstract
Supplemental Digital Content is available in the text.
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Affiliation(s)
- Julian Stumpf
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- KfH-Nierenzentrum Dresden, Dresden, Germany
| | - Wulf Tonnus
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Alexander Paliege
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- KfH-Nierenzentrum Dresden, Dresden, Germany
| | - Ronny Rettig
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Anne Steglich
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Florian Gembardt
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Friederike Kessel
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Hannah Kröger
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Patrick Arndt
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Jan Sradnick
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Kerstin Frank
- Institut für Transfusionsmedizin Plauen, DRK-Blutspendedienst Nord-Ost gemeinnützige GmbH, Plauen, Germany
| | - Torsten Tonn
- Institute for Transfusion Medicine, German Red Cross Blood Donation Service North-East, Dresden, Germany
- Faculty of Medicine Carl Gustav Carus, Transfusion Medicine, Technische Universität, Dresden, Germany
| | - Christian Hugo
- Medizinische Klinik und Poliklinik III, Nephrologie, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- KfH-Nierenzentrum Dresden, Dresden, Germany
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Schirutschke H, Gross P, Paliege A, Hugo C. 10-Year Evaluation of Adherence and Satisfaction with Information about Tolvaptan in ADPKD: A Single-Center Pilot Study. Patient Prefer Adherence 2021; 15:1941-1952. [PMID: 34511889 PMCID: PMC8427080 DOI: 10.2147/ppa.s325738] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/16/2021] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Tolvaptan is the only approved drug for the treatment of autosomal dominant polycystic kidney disease (ADPKD) and causes significant polyuria with secondary polydipsia. Up to now, there is no study that examines tolvaptan adherence and satisfaction with information received about tolvaptan in ADPKD patients 10 years after starting tolvaptan therapy. PATIENTS AND METHODS This pilot study includes 12 ADPKD patients that were formerly enrolled in the tolvaptan registration trials and have continued to use tolvaptan thereafter. Data were collected once via questionnaires on patients' self-reported adherence (MARS-D: Medication Adherence Report Scale - German version) and satisfaction with the information received about tolvaptan (SIMS-D: Satisfaction with Information about Medicines Scale - German version) at the time of the present study. In addition, serum creatinine levels and clinical data were evaluated. RESULTS The MARS-D demonstrated strong adherence to tolvaptan (range of possible score: 5-25; median: 23.5; range of individual results: 5). The SIMS-D showed a high level of satisfaction with the information received about the action and usage of tolvaptan (SIMS-D AU subscale; range of possible score: 0-9; median: 9, range of individual results: 1), but also revealed dissatisfaction regarding the information received about potential problems of tolvaptan in 42% of the participants (SIMS-D PP subscale; range of possible score: 0-8; median: 8, range of individual results: 6). During treatment with tolvaptan, the eGFR decreased from 78.8 ± 15.9 mL/min/1.73 m2 to 48.3 ± 19.4 mL/min/1.73 m2 (P < 0.0001). CONCLUSION Although patients reported strong adherence to tolvaptan, there was still dissatisfaction with the information received about potential problems with tolvaptan. Therefore, our data suggest conduction of at least one patient survey on adherence and satisfaction with the information received about tolvaptan during any tolvaptan treatment to improve patient education regarding the use of tolvaptan in slowing down of ADPKD.
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Affiliation(s)
- Holger Schirutschke
- University Hospital Carl Gustav Carus at the Technische, Universität Dresden, Department of Internal Medicine III, Division of Nephrology, Dresden, Germany
| | - Peter Gross
- University Hospital Carl Gustav Carus at the Technische, Universität Dresden, Department of Internal Medicine III, Division of Nephrology, Dresden, Germany
| | - Alexander Paliege
- University Hospital Carl Gustav Carus at the Technische, Universität Dresden, Department of Internal Medicine III, Division of Nephrology, Dresden, Germany
| | - Christian Hugo
- University Hospital Carl Gustav Carus at the Technische, Universität Dresden, Department of Internal Medicine III, Division of Nephrology, Dresden, Germany
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14
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Stumpf J, Siepmann T, Lindner T, Karger C, Schwöbel J, Anders L, Faulhaber-Walter R, Schewe J, Martin H, Schirutschke H, Barnett K, Hüther J, Müller P, Langer T, Pluntke T, Anding-Rost K, Meistring F, Stehr T, Pietzonka A, Escher K, Cerny S, Rothe H, Pistrosch F, Seidel H, Paliege A, Beige J, Bast I, Steglich A, Gembardt F, Kessel F, Kröger H, Arndt P, Sradnick J, Frank K, Klimova A, Mauer R, Grählert X, Anft M, Blazquez-Navarro A, Westhoff TH, Stervbo U, Tonn T, Babel N, Hugo C. Humoral and cellular immunity to SARS-CoV-2 vaccination in renal transplant versus dialysis patients: A prospective, multicenter observational study using mRNA-1273 or BNT162b2 mRNA vaccine. Lancet Reg Health Eur 2021; 9:100178. [PMID: 34318288 PMCID: PMC8299287 DOI: 10.1016/j.lanepe.2021.100178] [Citation(s) in RCA: 180] [Impact Index Per Article: 60.0] [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: 02/07/2023]
Abstract
Background Dialysis and kidney transplant patients are vulnerable populations for COVID-19 related disease and mortality. Methods We conducted a prospective study exploring the eight week time course of specific cellular (interferon-γ release assay and flow cytometry) or/and humoral immune responses (ELISA) to SARS-CoV-2 boost vaccination in more than 3100 participants including medical personnel, dialysis patients and kidney transplant recipients using mRNA vaccines BNT162b2 or mRNA-1273. Results SARS-CoV-2-vaccination induced seroconversion efficacy in dialysis patients was similar to medical personnel (> 95%), but markedly impaired in kidney transplant recipients (42%). T-cellular immunity largely mimicked humoral results. Major risk factors of seroconversion failure were immunosuppressive drug number and type (belatacept, MMF-MPA, calcineurin-inhibitors) as well as vaccine type (BNT162b2 mRNA). Seroconversion rates induced by mRNA-1273 compared to BNT162b2 vaccine were 97% to 88% (p < 0.001) in dialysis and 49% to 26% in transplant patients, respectively. Specific IgG directed against the new binding domain of the spike protein (RDB) were significantly higher in dialysis patients vaccinated by mRNA-1273 (95%) compared to BNT162b2 (85%, p < 0.001). Vaccination appeared safe and highly effective demonstrating an almost complete lack of symptomatic COVID-19 disease after boost vaccination as well as ceased disease incidences during third pandemic wave in dialysis patients. Conclusion Dialysis patients exhibit a remarkably high seroconversion rate of 95% after boost vaccination, while humoral response is impaired in the majority of transplant recipients. Immunosuppressive drug number and type as well as vaccine type (BNT162b2) are major determinants of seroconversion failure in both dialysis and transplant patients suggesting immune monitoring and adaption of vaccination protocols.
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Affiliation(s)
- Julian Stumpf
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- KfH-Nierenzentrum Dresden, Dresden, Germany
| | - Torsten Siepmann
- KfH-Nierenzentrum am Klinikum Chemnitz, Krankenhaus Küchwald, Chemnitz, Germany
| | - Tom Lindner
- Division of Nephrology, University Hospital Leipzig, Leipzig, Germany
| | - Claudia Karger
- KfH-Nierenzentrum am Klinikum St. Georg, Leipzig, Germany
| | | | | | | | - Jens Schewe
- Dialyse- und Nierenambulanz Sebnitz, Sebnitz, Germany
| | - Heike Martin
- Nephrologisches Zentrum Zwickau, Zwickau, Germany
| | | | | | | | - Petra Müller
- PHV Dialysezentrum Dresden-Johannstadt, Dresden, Germany
| | | | | | | | - Frank Meistring
- KfH-Nierenzentrum am Städtischen Klinikum Görlitz, Görlitz, Germany
| | | | | | - Katja Escher
- KfH-Gesundheitszentrum Aue, Aue-Bad-Schlema, Germany
| | - Simon Cerny
- ELBLAND Dialyse Großenhain, Großenhain, Germany
| | | | | | - Harald Seidel
- KfH-Nierenzentrum am Vogtland Krankenhaus Plauen, Plauen, Germany
| | - Alexander Paliege
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Joachim Beige
- KfH-Nierenzentrum am Klinikum St. Georg, Leipzig, Germany
- Department of Nephrology und Rheumatology, Internal Medicine II, Martin-Luther-University Halle/Wittenberg, Halle, Germany
| | | | - Anne Steglich
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Florian Gembardt
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Friederike Kessel
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Hannah Kröger
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Patrick Arndt
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Jan Sradnick
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Kerstin Frank
- Institut für Transfusionsmedizin Plauen, DRK-Blutspendedienst Nord-Ost gemeinnützige GmbH, Plauen, Germany
| | - Anna Klimova
- National Center for Tumor Diseases (NCT) Partner Site Dresden, Dresden, Germany
| | - René Mauer
- Faculty of Medicine Carl Gustav Carus, Institute for Medical Informatics and Biometry (IMB), Technische Universität, Dresden, Germany
| | - Xina Grählert
- Coordinating Centre for Clinical Trials, Dresden, Germany
| | - Moritz Anft
- Center for Translational Medicine and Immune Diagnostics Laboratory, Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, Germany
| | - Arturo Blazquez-Navarro
- Center for Translational Medicine and Immune Diagnostics Laboratory, Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, Germany
| | - Timm H Westhoff
- Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, Herne, Germany
| | - Ulrik Stervbo
- Center for Translational Medicine and Immune Diagnostics Laboratory, Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, Germany
| | - Torsten Tonn
- Institute for Transfusion Medicine, German Red Cross Blood Donation Service North-East, Dresden, Germany
- Faculty of Medicine Carl Gustav Carus, Transfusion Medicine, Technische Universität, Dresden, Germany
| | - Nina Babel
- Center for Translational Medicine and Immune Diagnostics Laboratory, Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, and Institute of Medical Immunology, Germany
| | - Christian Hugo
- Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- KfH-Nierenzentrum Dresden, Dresden, Germany
- Corresponding author at: Prof. Dr. med. Christian HugoDivision of Nephrology Department of Internal Medicine III University Hospital Carl Gustav Carus of the Technische Universität Dresden01307 Dresden Germany.
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Goerlich N, Brand HA, Langhans V, Tesch S, Schachtner T, Koch B, Paliege A, Schneider W, Grützkau A, Reinke P, Enghard P. Kidney transplant monitoring by urinary flow cytometry: Biomarker combination of T cells, renal tubular epithelial cells, and podocalyxin-positive cells detects rejection. Sci Rep 2020; 10:796. [PMID: 31964937 PMCID: PMC6972704 DOI: 10.1038/s41598-020-57524-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 03/19/2019] [Accepted: 12/31/2019] [Indexed: 01/19/2023] Open
Abstract
Creatinine and proteinuria are used to monitor kidney transplant patients. However, renal biopsies are needed to diagnose renal graft rejection. Here, we assessed whether the quantification of different urinary cells would allow non-invasive detection of rejection. Urinary cell numbers of CD4+ and CD8+ T cells, monocytes/macrophages, tubular epithelial cells (TEC), and podocalyxin(PDX)-positive cells were determined using flow cytometry and were compared to biopsy results. Urine samples of 63 renal transplant patients were analyzed. Patients with transplant rejection had higher amounts of urinary T cells than controls; however, patients who showed worsening graft function without rejection had similar numbers of T cells. T cells correlated with histological findings (interstitial inflammation p = 0.0005, r = 0.70; tubulitis p = 0.006, r = 0.58). Combining the amount of urinary T cells and TEC, or T cells and PDX+ cells, yielded a significant segregation of patients with rejection from patients without rejection (all p < 0.01, area under the curve 0.89–0.91). Urinary cell populations analyzed by flow cytometry have the potential to introduce new monitoring methods for kidney transplant patients. The combination of urinary T cells, TEC, and PDX-positive cells may allow non-invasive detection of transplant rejection.
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Affiliation(s)
| | | | | | | | | | - Benjamin Koch
- Goethe University Hospital Frankfurt, Frankfurt, Germany
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16
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Gross P, Schirutschke H, Paliege A. Con: Tolvaptan for autosomal dominant polycystic kidney disease-do we know all the answers? Nephrol Dial Transplant 2019; 34:35-37. [PMID: 30312449 DOI: 10.1093/ndt/gfy298] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 08/29/2018] [Indexed: 01/13/2023] Open
Abstract
According to recent literature, tolvaptan ameliorates the natural decline of renal function in autosomal dominant polycystic kidney disease. Tolvaptan is an orally available vasopressin V2 receptor antagonist. We describe herein the remaining questions and problems: it is unclear from the published work what influence tolvaptan has on total kidney volume. The consequences of hepatotoxicity for the subsequent dosing of tolvaptan have not been reported. A vasopressin V2 antagonist will cause polyuria and polydipsia and tolvaptan may influence quality of life (QOL), however, there are no QOL data. The cost-effectiveness of tolvaptan is borderline. It is unknown at which stage of renal failure tolvaptan therapy may have to be stopped. There are no established criteria to determine the ineffectiveness of tolvaptan. It is presently undecided whether a steady high water intake is able to imitate the renal effects of tolvaptan. Finally, the cause of worsening glomerular filtration rate after the start of tolvaptan is unknown.
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Affiliation(s)
- Peter Gross
- Division of Nephrology, Department of Medicine, University Medical Center, Dresden, Germany
| | - Holger Schirutschke
- Division of Nephrology, Department of Medicine, University Medical Center, Dresden, Germany
| | - Alexander Paliege
- Division of Nephrology, Department of Medicine, University Medical Center, Dresden, Germany
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17
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Giesecke T, Himmerkus N, Leipziger J, Bleich M, Koshimizu TA, Fähling M, Smorodchenko A, Shpak J, Knappe C, Isermann J, Ayasse N, Kawahara K, Schmoranzer J, Gimber N, Paliege A, Bachmann S, Mutig K. Vasopressin Increases Urinary Acidification via V1a Receptors in Collecting Duct Intercalated Cells. J Am Soc Nephrol 2019; 30:946-961. [PMID: 31097611 DOI: 10.1681/asn.2018080816] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 08/11/2018] [Accepted: 03/11/2019] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Antagonists of the V1a vasopressin receptor (V1aR) are emerging as a strategy for slowing progression of CKD. Physiologically, V1aR signaling has been linked with acid-base homeostasis, but more detailed information is needed about renal V1aR distribution and function. METHODS We used a new anti-V1aR antibody and high-resolution microscopy to investigate Va1R distribution in rodent and human kidneys. To investigate whether V1aR activation promotes urinary H+ secretion, we used a V1aR agonist or antagonist to evaluate V1aR function in vasopressin-deficient Brattleboro rats, bladder-catheterized mice, isolated collecting ducts, and cultured inner medullary collecting duct (IMCD) cells. RESULTS Localization of V1aR in rodent and human kidneys produced a basolateral signal in type A intercalated cells (A-ICs) and a perinuclear to subapical signal in type B intercalated cells of connecting tubules and collecting ducts. Treating vasopressin-deficient Brattleboro rats with a V1aR agonist decreased urinary pH and tripled net acid excretion; we observed a similar response in C57BL/6J mice. In contrast, V1aR antagonist did not affect urinary pH in normal or acid-loaded mice. In ex vivo settings, basolateral treatment of isolated perfused medullary collecting ducts with the V1aR agonist or vasopressin increased intracellular calcium levels in ICs and decreased luminal pH, suggesting V1aR-dependent calcium release and stimulation of proton-secreting proteins. Basolateral treatment of IMCD cells with the V1aR agonist increased apical abundance of vacuolar H+-ATPase in A-ICs. CONCLUSIONS Our results show that activation of V1aR contributes to urinary acidification via H+ secretion by A-ICs, which may have clinical implications for pharmacologic targeting of V1aR.
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Affiliation(s)
- Torsten Giesecke
- Institute of Vegetative Anatomy, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; .,Berlin Institute of Health (BIH), Berlin, Germany
| | - Nina Himmerkus
- Institute of Physiology, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | - Jens Leipziger
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - Markus Bleich
- Institute of Physiology, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | - Taka-Aki Koshimizu
- Division of Molecular Pharmacology, Department of Pharmacology, Jichi Medical University, Shimotsuke-shi, Tochigi-ken, Japan
| | - Michael Fähling
- Institute of Vegetative Physiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Alina Smorodchenko
- Institute of Vegetative Anatomy, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Julia Shpak
- Institute of Vegetative Anatomy, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Carolin Knappe
- Institute of Vegetative Anatomy, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Julian Isermann
- Institute of Physiology, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | - Niklas Ayasse
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - Katsumasa Kawahara
- Department of Physiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Jan Schmoranzer
- Advanced Medical BioImaging Core Facility, Charite-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Niclas Gimber
- Advanced Medical BioImaging Core Facility, Charite-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Alexander Paliege
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany; and
| | - Sebastian Bachmann
- Institute of Vegetative Anatomy, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Kerim Mutig
- Institute of Vegetative Anatomy, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; .,Department of Pharmacology, I.M. Sechenov First Moscow State Medical University of the Ministry of Healthcare of the Russian Federation (Sechenovskiy University), Moscow, Russian Federation
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18
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Hultström M, Paliege A, Jönsson S, Agic MB, Melville J, Skogstrand T, Fähling M. AT1a stimulation of tonicity‐responsive enhancer binding protein (TonEBP/NFAT5) translation through Annexin‐A2 may represent allostatic anticipation of increased tonicity. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.867.8] [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: 11/11/2022]
Affiliation(s)
- Michael Hultström
- Department of medical cellbiologyUppsala UniversityUppsalaSweden
- Department of Surgical SciencesUppsala UniversityUppsalaSweden
| | | | - Sofia Jönsson
- Department of medical cellbiologyUppsala UniversityUppsalaSweden
| | | | | | | | - Michael Fähling
- Department of Vegetative PhysiologyCharite ‐ Universitätsmedizin BerlinBerlinGermany
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Tonnus W, Meyer C, Paliege A, Belavgeni A, von Mässenhausen A, Bornstein SR, Hugo C, Becker JU, Linkermann A. The pathological features of regulated necrosis. J Pathol 2019; 247:697-707. [PMID: 30714148 DOI: 10.1002/path.5248] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [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: 12/13/2018] [Revised: 01/10/2019] [Accepted: 01/13/2019] [Indexed: 12/13/2022]
Abstract
Necrosis of a cell is defined by the loss of its plasma membrane integrity. Morphologically, necrosis occurs in several forms such as coagulative necrosis, colliquative necrosis, caseating necrosis, fibrinoid necrosis, and others. Biochemically, necrosis was demonstrated to represent a number of genetically determined signalling pathways. These include (i) kinase-mediated necroptosis, which depends on receptor interacting protein kinase 3 (RIPK3)-mediated phosphorylation of the pseudokinase mixed lineage kinase domain like (MLKL); (ii) gasdermin-mediated necrosis downstream of inflammasomes, also referred to as pyroptosis; and (iii) an iron-catalysed mechanism of highly specific lipid peroxidation named ferroptosis. Given the molecular understanding of the nature of these pathways, specific antibodies may allow direct detection of regulated necrosis and correlation with morphological features. Necroptosis can be specifically detected by immunohistochemistry and immunofluorescence employing antibodies to phosphorylated MLKL. Likewise, it is possible to generate cleavage-specific antibodies against epitopes in gasdermin protein family members. In ferroptosis, however, specific detection requires quantification of oxidative lipids by mass spectrometry (oxylipidomics). Together with classical cell death markers, such as TUNEL staining and detection of cleaved caspase-3 in apoptotic cells, the extension of the arsenal of necrosis markers will allow pathological detection of specific molecular pathways rather than isolated morphological descriptions. These novel pieces of information will be extraordinarily helpful for clinicians as inhibitors of necroptosis (necrostatins), ferroptosis (ferrostatins), and inflammasomes have emerged in clinical trials. Anatomical pathologists should embrace these novel ancillary tests and the concepts behind them and test their impact on diagnostic precision, prognostication, and the prediction of response to the upcoming anti-necrotic therapies. Copyright © 2019 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Wulf Tonnus
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Claudia Meyer
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Alexander Paliege
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Alexia Belavgeni
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Anne von Mässenhausen
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Stefan R Bornstein
- Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Christian Hugo
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Jan Ulrich Becker
- Institute of Pathology, University Hospital Cologne, Cologne, Germany
| | - Andreas Linkermann
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
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20
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Fähling M, Paliege A, Jönsson S, Becirovic-Agic M, Melville JM, Skogstrand T, Hultström M. NFAT5 regulates renal gene expression in response to angiotensin II through Annexin-A2-mediated posttranscriptional regulation in hypertensive rats. Am J Physiol Renal Physiol 2018; 316:F101-F112. [PMID: 30332317 DOI: 10.1152/ajprenal.00361.2018] [Citation(s) in RCA: 7] [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] [Indexed: 02/04/2023] Open
Abstract
The aim was to identify new targets that regulate gene expression at the posttranscriptional level in angiotensin II (ANGII)-mediated hypertension. Heparin affinity chromatography was used to enrich nucleic acid-binding proteins from kidneys of two-kidney, one-clip (2K1C) hypertensive Wistar rats. The experiment was repeated with 14-day ANGII infusion using Alzet osmotic mini pumps, with or without ANGII receptor AT1a inhibition using losartan in the drinking water. Mean arterial pressure increased after 2K1C or ANGII infusion and was inhibited with losartan. Heparin affinity chromatography and mass spectrometry were used to identify Annexin-A2 (ANXA2) as having differential nucleic acid-binding activity. Total Annexin-A2 protein expression was unchanged, whereas nucleic acid-binding activity was increased in both kidneys of 2K1C and after ANGII infusion through AT1a stimulation. Costaining of Annexin-A2 with α-smooth muscle actin and aquaporin 2 showed prominent expression in the endothelia of larger arteries and the cells of the inner medullary collecting duct. The nuclear factor of activated T cells (NFAT) transcription factor was identified as a likely Annexin-A2 target using enrichment analysis on a 2K1C microarray data set and identifying several binding sites in the regulatory region of the mRNA. Expression analysis showed that ANGII increases NFAT5 protein but not mRNA level and, thus, indicated that NFAT5 is regulated by posttranscriptional regulation, which correlates with activation of the RNA-binding protein Annexin-A2. In conclusion, we show that ANGII increases Annexin-A2 nucleic acid-binding activity that correlates with elevated protein levels of the NFAT5 transcription factor. NFAT signaling appears to be a major contributor to renal gene regulation in high-renin states.
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Affiliation(s)
- Michael Fähling
- Institut für Vegetative Physiologie, Charité, Universitätsmedizin, Berlin , Germany
| | - Alexander Paliege
- Institut für Anatomie, Charité, Universitätsmedizin, Berlin , Germany
| | - Sofia Jönsson
- Integrative Physiology, Department of Medical Cell Biology, Uppsala University , Uppsala , Sweden
| | - Mediha Becirovic-Agic
- Integrative Physiology, Department of Medical Cell Biology, Uppsala University , Uppsala , Sweden
| | - Jacqueline M Melville
- Integrative Physiology, Department of Medical Cell Biology, Uppsala University , Uppsala , Sweden
| | - Trude Skogstrand
- Department of Biomedicine, University of Bergen , Bergen , Norway
| | - Michael Hultström
- Integrative Physiology, Department of Medical Cell Biology, Uppsala University , Uppsala , Sweden.,Anaesthesiology and Intensive Care Medicine, Department of Surgical Sciences, Uppsala University , Uppsala , Sweden
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21
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Fähling M, Mathia S, Scheidl J, Abramovitch R, Milman Z, Paliege A, Peters H, Persson PB, Heyman SN, Rosenberger C. Cyclosporin a induces renal episodic hypoxia. Acta Physiol (Oxf) 2017; 219:625-639. [PMID: 27690155 DOI: 10.1111/apha.12811] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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: 03/16/2016] [Revised: 04/29/2016] [Accepted: 09/21/2016] [Indexed: 01/20/2023]
Abstract
AIM Cyclosporin A (CsA) causes renal toxicity. The underlying mechanisms are incompletely understood, but may involve renal hypoxia and hypoxia-inducible factors (Hifs). We sought for hypoxia and Hif in mouse kidneys with CsA-induced toxicity, assessed their time course, Hif-mediated responses and the impact of interventional Hif upregulation. METHODS Mice received CsA or its solvent cremophore for up to 6 weeks. Low salt diet (Na+ ↓) was given in combination with CsA to enhance toxicity. We assessed fine morphology, renal function, blood oxygen level-dependent magnetic resonance imaging under room air and following changes in breathing gas composition which correlate with vascular reactivity, pimonidazole adducts (which indicate O2 tensions below 10 mmHg), Hif-α proteins, as well as expression of Hif target genes. Stable Hif upregulation was achieved by inducible, Pax8-rtTA-based knockout of von Hippel-Lindau protein (Vhl-KO), which is crucial for Hif-α degradation. RESULTS Cyclosporin A transiently increased renal deoxyhaemoglobin (R2*). Augmented vascular reactivity was observed at 2 h, but decreased at 24 h after CsA treatment. Na+ ↓/CsA provoked chronic renal failure with tubular degeneration and interstitial fibrosis. Nephron segments at risk for injury accumulated pimonidazole adducts, as well as Hif-α proteins. Remarkably, Hif target gene expression remained unchanged, while factor-inhibiting Hif (Fih) was enhanced. Na+ ↓/CsA/Vhl-KO aggravated morpho-functional outcome of chronic renal CsA toxicity. CONCLUSIONS Cyclosporin A provokes episodic hypoxia in nephron segments most susceptible to chronic CsA toxicity. Fih is upregulated and likely blocks further Hif activity. Continuous tubular Hif upregulation via Vhl-KO worsens the outcome of chronic CsA-induced renal toxicity.
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Affiliation(s)
- M. Fähling
- Vegetative Physiologie; Charité - Universitätsmedizin Berlin; Berlin Germany
| | - S. Mathia
- Vegetative Physiologie; Charité - Universitätsmedizin Berlin; Berlin Germany
- Nephrology and Renal Transplantation; Charité - Universitätsmedizin Berlin; Berlin Germany
| | - J. Scheidl
- Gastroenterology; Krankenhaus Westend; Berlin Germany
| | - R. Abramovitch
- The Goldyne Savad Institute of Gene Therapy; Hadassah Hebrew University Medical Center; Jerusalem Israel
| | - Z. Milman
- The Goldyne Savad Institute of Gene Therapy; Hadassah Hebrew University Medical Center; Jerusalem Israel
| | - A. Paliege
- Nephrology and Renal Transplantation; Charité - Universitätsmedizin Berlin; Berlin Germany
| | - H. Peters
- Nephrology and Renal Transplantation; Charité - Universitätsmedizin Berlin; Berlin Germany
| | - P. B. Persson
- Vegetative Physiologie; Charité - Universitätsmedizin Berlin; Berlin Germany
| | - S. N. Heyman
- Medicine; Hadassah Hebrew University Medical Center; Jerusalem Israel
| | - C. Rosenberger
- Nephrology and Renal Transplantation; Charité - Universitätsmedizin Berlin; Berlin Germany
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22
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Blankenstein KI, Borschewski A, Labes R, Paliege A, Boldt C, McCormick JA, Ellison DH, Bader M, Bachmann S, Mutig K. Calcineurin inhibitor cyclosporine A activates renal Na-K-Cl cotransporters via local and systemic mechanisms. Am J Physiol Renal Physiol 2016; 312:F489-F501. [PMID: 28003191 DOI: 10.1152/ajprenal.00575.2016] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [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: 10/25/2016] [Revised: 12/05/2016] [Accepted: 12/13/2016] [Indexed: 11/22/2022] Open
Abstract
Calcineurin dephosphorylates nuclear factor of activated T cells transcription factors, thereby facilitating T cell-mediated immune responses. Calcineurin inhibitors are instrumental for immunosuppression after organ transplantation but may cause side effects, including hypertension and electrolyte disorders. Kidneys were recently shown to display activation of the furosemide-sensitive Na-K-2Cl cotransporter (NKCC2) of the thick ascending limb and the thiazide-sensitive Na-Cl cotransporter (NCC) of the distal convoluted tubule upon calcineurin inhibition using cyclosporin A (CsA). An involvement of major hormones like angiotensin II or arginine vasopressin (AVP) has been proposed. To resolve this issue, the effects of CsA treatment in normal Wistar rats, AVP-deficient Brattleboro rats, and cultured renal epithelial cells endogenously expressing either NKCC2 or NCC were studied. Acute administration of CsA to Wistar rats rapidly augmented phosphorylation levels of NKCC2, NCC, and their activating kinases suggesting intraepithelial activating effects. Chronic CsA administration caused salt retention and hypertension, along with stimulation of renin and suppression of renal cyclooxygenase 2, pointing to a contribution of endocrine and paracrine mechanisms at long term. In Brattleboro rats, CsA induced activation of NCC, but not NKCC2, and parallel effects were obtained in cultured cells in the absence of AVP. Stimulation of cultured thick ascending limb cells with AVP agonist restored their responsiveness to CsA. Our results suggest that the direct epithelial action of calcineurin inhibition is sufficient for the activation of NCC, whereas its effect on NKCC2 is more complex and requires concomitant stimulation by AVP.
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Affiliation(s)
- K I Blankenstein
- Department of Anatomy, Charité University Medicine, Berlin, Germany
| | - A Borschewski
- Department of Anatomy, Charité University Medicine, Berlin, Germany
| | - R Labes
- Department of Anatomy, Charité University Medicine, Berlin, Germany
| | - A Paliege
- Department of Anatomy, Charité University Medicine, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany
| | - C Boldt
- Department of Anatomy, Charité University Medicine, Berlin, Germany
| | - J A McCormick
- Division of Nephrology and Hypertension, Oregon Health & Science University and Veterans Affairs Medical Center, Portland, Oregon; and
| | - D H Ellison
- Division of Nephrology and Hypertension, Oregon Health & Science University and Veterans Affairs Medical Center, Portland, Oregon; and
| | - M Bader
- Max Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - S Bachmann
- Department of Anatomy, Charité University Medicine, Berlin, Germany
| | - K Mutig
- Department of Anatomy, Charité University Medicine, Berlin, Germany;
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23
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Himmerkus N, Plain A, Marques RD, Sonntag SR, Paliege A, Leipziger J, Bleich M. AVP dynamically increases paracellular Na+ permeability and transcellular NaCl transport in the medullary thick ascending limb of Henle’s loop. Pflugers Arch 2016; 469:149-158. [DOI: 10.1007/s00424-016-1915-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 11/21/2016] [Accepted: 11/22/2016] [Indexed: 01/08/2023]
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24
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Boldt C, Röschel T, Himmerkus N, Plain A, Bleich M, Labes R, Blum M, Krause H, Magheli A, Giesecke T, Mutig K, Rothe M, Weldon SM, Dragun D, Schunck WH, Bachmann S, Paliege A. Vasopressin lowers renal epoxyeicosatrienoic acid levels by activating soluble epoxide hydrolase. Am J Physiol Renal Physiol 2016; 311:F1198-F1210. [PMID: 27681558 DOI: 10.1152/ajprenal.00062.2016] [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: 01/29/2016] [Accepted: 09/19/2016] [Indexed: 11/22/2022] Open
Abstract
Activation of the thick ascending limb (TAL) Na+-K+-2Cl- cotransporter (NKCC2) by the antidiuretic hormone arginine vasopressin (AVP) is an essential mechanism of renal urine concentration and contributes to extracellular fluid and electrolyte homeostasis. AVP effects in the kidney are modulated by locally and/or by systemically produced epoxyeicosatrienoic acid derivates (EET). The relation between AVP and EET metabolism has not been determined. Here, we show that chronic treatment of AVP-deficient Brattleboro rats with the AVP V2 receptor analog desmopressin (dDAVP; 5 ng/h, 3 days) significantly lowered renal EET levels (-56 ± 3% for 5,6-EET, -50 ± 3.4% for 11,12-EET, and -60 ± 3.7% for 14,15-EET). The abundance of the principal EET-degrading enzyme soluble epoxide hydrolase (sEH) was increased at the mRNA (+160 ± 37%) and protein levels (+120 ± 26%). Immunohistochemistry revealed dDAVP-mediated induction of sEH in connecting tubules and cortical and medullary collecting ducts, suggesting a role of these segments in the regulation of local interstitial EET signals. Incubation of murine kidney cell suspensions with 1 μM 14,15-EET for 30 min reduced phosphorylation of NKCC2 at the AVP-sensitive threonine residues T96 and T101 (-66 ± 5%; P < 0.05), while 14,15-DHET had no effect. Concomitantly, isolated perfused cortical thick ascending limb pretreated with 14,15-EET showed a 30% lower transport current under high and a 70% lower transport current under low symmetric chloride concentrations. In summary, we have shown that activation of AVP signaling stimulates renal sEH biosynthesis and enzyme activity. The resulting reduction of EET tissue levels may be instrumental for increased NKCC2 transport activity during AVP-induced antidiuresis.
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Affiliation(s)
- Christin Boldt
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Tom Röschel
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Nina Himmerkus
- Department of Physiology, Christian-Albrechts-University, Kiel, Germany
| | - Allein Plain
- Department of Physiology, Christian-Albrechts-University, Kiel, Germany
| | - Markus Bleich
- Department of Physiology, Christian-Albrechts-University, Kiel, Germany
| | - Robert Labes
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Maximilian Blum
- Max Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - Hans Krause
- Department of Urology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Ahmed Magheli
- Department of Urology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Torsten Giesecke
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Kerim Mutig
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | | | - Steven M Weldon
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut
| | - Duska Dragun
- Department of Nephrology, Charité-Universitätsmedizin Berlin, Berlin, Germany; and.,Berlin Institute of Health, Berlin, Germany
| | | | - Sebastian Bachmann
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Alexander Paliege
- Department of Nephrology, Charité-Universitätsmedizin Berlin, Berlin, Germany; and .,Berlin Institute of Health, Berlin, Germany
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25
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Bamoulid J, Staeck O, Halleck F, Khadzhynov D, Paliege A, Brakemeier S, Dürr M, Budde K. Immunosuppression and Results in Renal Transplantation. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.eursup.2016.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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26
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Langhans V, Tesch S, Abdirama D, Brand H, Bertolo M, Baumgart S, Paliege A, Riemekasten G, Enghard P. P42 URINARY CELL SIGNATURE OF PATIENTS WITH ACUTE KIDNEY INJURY. Kidney Int Rep 2016. [DOI: 10.1016/j.ekir.2016.09.048] [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: 10/20/2022] Open
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27
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Paliege A, Bamoulid J, Bachmann F, Staeck O, Halleck F, Khadzhynov D, Brakemeier S, Dürr M, Budde K. [Immunosuppression and its use in kidney transplantation]. Urologe A 2016; 54:1376-84. [PMID: 26459580 DOI: 10.1007/s00120-015-3909-x] [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] [Indexed: 02/06/2023]
Abstract
BACKGROUND Current immunosuppressive protocols effectively prevent acute rejection of renal allografts. Extensive drug toxicity and the deleterious effects of long-term immunosuppression are associated with significant morbidity and mortality. OBJECTIVES The purpose of this article is to provide an overview over modern immunosuppressants and their unwanted side effects and to discuss strategies for improved long-term transplant survival. METHODS Review of the current topic-related literature and discussion of our own experience. RESULTS The use of antibody induction together with an initial combination therapy of calcineurin inhibitors, mycophenolate and steroids is recommended and results in excellent early outcomes. Detrimental effects include an increased incidence of infections, malignomas, and cardiovascular diseases. Long-term transplant survival is impaired by extensive drug toxicity and the frequent development of donor specific antibodies. Reduction of overall cumulative exposure to immunosuppressants or the reduction of specific toxic drugs such as calcineurin inhibitors and steroids may improve long-term results. Alternative immunosuppressants like mTOR inhibitors and belatacept appear to be effective and safe but their long-term effects on patient and allograft survival needs to be established in clinical trials. CONCLUSIONS Current immunosuppressants provide effective protection from renal allograft rejection. However, their use is complicated by serious side effects. In the future, development of novel immunosuppressants and optimization of minimization strategies may help to improve long-term success after kidney transplantation.
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Affiliation(s)
- A Paliege
- Medizinische Klinik mit Schwerpunkt Nephrologie, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 10117, Berlin, Deutschland
| | - J Bamoulid
- Medizinische Klinik mit Schwerpunkt Nephrologie, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 10117, Berlin, Deutschland
| | - F Bachmann
- Medizinische Klinik mit Schwerpunkt Nephrologie, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 10117, Berlin, Deutschland
| | - O Staeck
- Medizinische Klinik mit Schwerpunkt Nephrologie, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 10117, Berlin, Deutschland
| | - F Halleck
- Medizinische Klinik mit Schwerpunkt Nephrologie, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 10117, Berlin, Deutschland
| | - D Khadzhynov
- Medizinische Klinik mit Schwerpunkt Nephrologie, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 10117, Berlin, Deutschland
| | - S Brakemeier
- Medizinische Klinik mit Schwerpunkt Nephrologie, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 10117, Berlin, Deutschland
| | - M Dürr
- Medizinische Klinik mit Schwerpunkt Nephrologie, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 10117, Berlin, Deutschland
| | - K Budde
- Medizinische Klinik mit Schwerpunkt Nephrologie, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 10117, Berlin, Deutschland.
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28
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Mutig K, Borowski T, Boldt C, Borschewski A, Paliege A, Popova E, Bader M, Bachmann S. Demonstration of the functional impact of vasopressin signaling in the thick ascending limb by a targeted transgenic rat approach. Am J Physiol Renal Physiol 2016; 311:F411-23. [PMID: 27306979 DOI: 10.1152/ajprenal.00126.2016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 06/09/2016] [Indexed: 11/22/2022] Open
Abstract
The antidiuretic hormone vasopressin (AVP) regulates renal salt and water reabsorption along the distal nephron and collecting duct system. These effects are mediated by vasopressin 2 receptors (V2R) and release of intracellular Gs-mediated cAMP to activate epithelial transport proteins. Inactivating mutations in the V2R gene lead to the X-linked form of nephrogenic diabetes insipidus (NDI), which has chiefly been related with impaired aquaporin 2-mediated water reabsorption in the collecting ducts. Previous work also suggested the AVP-V2R-mediated activation of Na(+)-K(+)-2Cl(-)-cotransporters (NKCC2) along the thick ascending limb (TAL) in the context of urine concentration, but its individual contribution to NDI or, more generally, to overall renal function was unclear. We hypothesized that V2R-mediated effects in TAL essentially determine its reabsorptive function. To test this, we reevaluated V2R expression. Basolateral membranes of medullary and cortical TAL were clearly stained, whereas cells of the macula densa were unreactive. A dominant-negative, NDI-causing truncated V2R mutant (Ni3-Glu242stop) was then introduced into the rat genome under control of the Tamm-Horsfall protein promoter to cause a tissue-specific AVP-signaling defect exclusively in TAL. Resulting Ni3-V2R transgenic rats revealed decreased basolateral but increased intracellular V2R signal in TAL epithelia, suggesting impaired trafficking of the receptor. Rats displayed significant baseline polyuria, failure to concentrate the urine in response to water deprivation, and hypercalciuria. NKCC2 abundance, phosphorylation, and surface expression were markedly decreased. In summary, these data indicate that suppression of AVP-V2R signaling in TAL causes major impairment in renal fluid and electrolyte handling. Our results may have clinical implications.
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Affiliation(s)
- Kerim Mutig
- Department of Anatomy, Charité Universitätsmedizin, Berlin, Germany; and
| | - Tordis Borowski
- Department of Anatomy, Charité Universitätsmedizin, Berlin, Germany; and
| | - Christin Boldt
- Department of Anatomy, Charité Universitätsmedizin, Berlin, Germany; and
| | - Aljona Borschewski
- Department of Anatomy, Charité Universitätsmedizin, Berlin, Germany; and
| | - Alexander Paliege
- Department of Anatomy, Charité Universitätsmedizin, Berlin, Germany; and
| | - Elena Popova
- Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
| | - Michael Bader
- Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
| | - Sebastian Bachmann
- Department of Anatomy, Charité Universitätsmedizin, Berlin, Germany; and
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29
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Bamoulid J, Staeck O, Halleck F, Dürr M, Paliege A, Lachmann N, Brakemeier S, Liefeldt L, Budde K. Advances in pharmacotherapy to treat kidney transplant rejection. Expert Opin Pharmacother 2015; 16:1627-48. [PMID: 26159444 DOI: 10.1517/14656566.2015.1056734] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Current immunosuppressive combination therapy provides excellent prevention of T-cell-mediated rejection following renal transplantation; however, antibody-mediated rejection remains of high concern and accounts for a large number of long-term allograft losses. The recent development of protocol biopsies resulted in the definition of subclinical rejection (SCR), showing histologic evidence for rejection but unremarkable clinical course. AREAS COVERED This review describes the current knowledge and evidence of pharmacotherapy to treat kidney allograft rejections and covers SCR treatment options. Each substance is analyzed with regard to its classical indication and further discussed for the treatment of other forms of rejection. EXPERT OPINION Despite a lack of randomized trials, early acute T-cell-mediated rejection can be treated effectively in most cases without graft loss. The necessity to treat SCR is currently unclear. Due to a lack of effective therapies, new treatment approaches for antibody-mediated rejection are an urgent medical need to improve long-term outcomes. Future research should aim to better define pathophysiology and histology, stratify risk, and develop rational treatment strategies from randomized controlled trials, in order to establish the value of novel therapies in the arsenal of rejection pharmacotherapy. However, the effective prevention of rejection with minimal side effects still remains the goal in immunosuppression.
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Affiliation(s)
- Jamal Bamoulid
- Charité Universitätsmedizin Berlin, Department of Nephrology , Berlin , Germany +49 30 450 514002 ; +49 30 450 514902 ;
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30
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Neymeyer H, Labes R, Reverte V, Saez F, Stroh T, Dathe C, Hohberger S, Zeisberg M, Müller GA, Salazar J, Bachmann S, Paliege A. Activation of annexin A1 signalling in renal fibroblasts exerts antifibrotic effects. Acta Physiol (Oxf) 2015; 215:144-58. [PMID: 26332853 DOI: 10.1111/apha.12586] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [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: 03/11/2015] [Revised: 04/22/2015] [Accepted: 08/25/2015] [Indexed: 12/11/2022]
Abstract
AIM The anti-inflammatory protein annexin A1 (AnxA1) and its formyl peptide receptor 2 (FPR2) have protective effects in organ fibrosis. Their role in chronic kidney disease (CKD) has not yet been elucidated. Our aim was to characterize the AnxA1/FPR2 system in models of renal fibrosis. METHODS Rats were treated with angiotensin receptor antagonist during the nephrogenic period (ARAnp) to induce late-onset hypertensive nephropathy and fibrosis. Localization and regulation of AnxA1 and FPR2 were studied by quantitative real-time PCR and double labelling immunofluorescence. Biological effects of AnxA1 were studied in cultured renal fibroblasts from AnxA1(-/-) and wild-type mice. RESULTS Angiotensin receptor antagonist during the nephrogenic period kidneys displayed matrix foci containing CD73(+) fibroblasts, alpha-smooth muscle actin (a-SMA)(+) myofibroblasts and CD68(+) macrophages. TGF-β and AnxA1 mRNAs were ~threefold higher than in controls. AnxA1 was localized to macrophages and fibroblasts; myofibroblasts were negative. FPR2 was localized to fibroblasts, myofibroblasts, macrophages and endothelial cells. AnxA1 and FPR2 immunoreactive signals were increased in the foci, with fibroblasts and macrophages expressing both proteins. AnxA1(-/-) fibroblasts revealed higher α-SMA (sevenfold) and collagen 1A1 (Col1A1; 144-fold) mRNA levels than controls. Treatment of murine WT fibroblasts with TGF-β (22.5 ng mL 24 h(-1)) increased mRNA levels of α-SMA (9.3-fold) and Col1A1 (fourfold). These increases were greatly attenuated upon overexpression of AnxA1 (1.5- and 1.7-fold, respectively; P < 0.05). Human fibroblasts reacted similarly when receiving the FPR2 inhibitor WRW4. CONCLUSION Our results demonstrate that AnxA1 and FPR2 are abundantly expressed in the renal interstitium and modulate fibroblast phenotype and extracellular matrix synthesis activity.
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Affiliation(s)
- H. Neymeyer
- Department of Anatomy; Charité Universitätsmedizin Berlin; Berlin Germany
| | - R. Labes
- Department of Anatomy; Charité Universitätsmedizin Berlin; Berlin Germany
| | - V. Reverte
- Department of Physiology; School of Medicine; University of Murcia; Murcia Spain
| | - F. Saez
- Department of Physiology; School of Medicine; University of Murcia; Murcia Spain
| | - T. Stroh
- Department of Medicine; Charité Universitätsmedizin Berlin; Berlin Germany
| | - C. Dathe
- Department of Anatomy; Charité Universitätsmedizin Berlin; Berlin Germany
| | - S. Hohberger
- Department of Anatomy; Charité Universitätsmedizin Berlin; Berlin Germany
| | - M. Zeisberg
- Department of Nephrology and Rheumatology; Göttingen University Medical Center; Göttingen Germany
| | - G. A. Müller
- Department of Nephrology and Rheumatology; Göttingen University Medical Center; Göttingen Germany
| | - J. Salazar
- Department of Physiology; School of Medicine; University of Murcia; Murcia Spain
| | - S. Bachmann
- Department of Anatomy; Charité Universitätsmedizin Berlin; Berlin Germany
| | - A. Paliege
- Department of Anatomy; Charité Universitätsmedizin Berlin; Berlin Germany
- Department of Nephrology; Charité Universitätsmedizin Berlin; Berlin Germany
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31
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Labes R, Neymeyer H, Saez F, Reverte V, Salazar J, Bachmann S, Paliege A. Regulation of Formyl Peptide Receptor 2 During Chronic Kidney Disease. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.663.12] [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: 11/11/2022]
Affiliation(s)
| | | | - Fara Saez
- PhysiologyUniversity of MurciaMurciaSpain
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32
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Boldt C, Paliege A, Jankowski V, Wakabayashi S, Hisamitsu T, Bachmann S, Mutig K. Calcineurin homologous protein 1 interferes with calcineurin‐dependent regulation of the renal Na‐K‐2Cl‐cotransporter. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.960.25] [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: 11/11/2022]
Affiliation(s)
| | | | - Vera Jankowski
- Molecular Cardiovascular ResearchIMCAR Uniklinikum AachenGermany
| | - Shigeo Wakabayashi
- Molecular PhysiologyNational Cerebral and Cardiovascular Center Research InstituteJapan
| | - Takashi Hisamitsu
- Molecular PhysiologyNational Cerebral and Cardiovascular Center Research InstituteJapan
| | | | - Kerim Mutig
- AnatomyCharite ‐ UniversitaetmedizinBerlinGermany
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33
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Saez F, Reverte V, Paliege A, Moreno JM, Llinás MT, Bachmann S, Salazar FJ. Sex-dependent hypertension and renal changes in aged rats with altered renal development. Am J Physiol Renal Physiol 2014; 307:F461-70. [DOI: 10.1152/ajprenal.00198.2014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Numerous studies have evaluated blood pressure (BP) and renal changes in several models of developmental programming of hypertension. The present study examined to what extent BP, renal hemodynamic, and renal structure are affected at an old age in male and female animals with altered renal development. It also evaluated whether renal damage is associated with changes in cyclooxygenase (COX)-2 and neuronal nitric oxide synthase (NOS1) expression and immunoreactivity. Experiments were carried out in rats at 10–11 and 16–17 mo of age treated with vehicle or an ANG II type 1 receptor antagonist during the nephrogenic period (ARAnp). A progressive increment in BP and a deterioration of renal hemodynamics were found in both sexes of ARAnp-treated rats, with these changes being greater ( P < 0.05) in male rats. The decrease in glomerular filtration rate at the oldest age was greater ( P < 0.05) in male (74%) than female (32%) ARAnp-treated rats. Sex-dependent deterioration of renal structure was demonstrated in optical and electron microscopic experiments. COX-2 and NOS1 immunoreactivity were enhanced in the macula densa of male but not female ARAnp-treated rats. The present study reports novel findings suggesting that stimuli that induce a decrease of ANG II effects during renal development lead to a progressive increment in BP and renal damage at an old age in both sexes, but these BP and renal changes are greater in males than in females. The renal damage is associated with an increase of COX-2 and NOS1 in the macula densa of males but not females with altered renal development.
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Affiliation(s)
- Fara Saez
- Department of Physiology, University of Murcia, Regional Campus of International Excellence “Mare Nostrum,” Murcia, Instituto Murciano de Investigación Biomédica, Spain; and
| | - Virginia Reverte
- Department of Physiology, University of Murcia, Regional Campus of International Excellence “Mare Nostrum,” Murcia, Instituto Murciano de Investigación Biomédica, Spain; and
| | - Alexander Paliege
- Anatomisches Institut, Charité, Humboldt Universität, Berlin, Germany
| | - Juan Manuel Moreno
- Department of Physiology, University of Murcia, Regional Campus of International Excellence “Mare Nostrum,” Murcia, Instituto Murciano de Investigación Biomédica, Spain; and
| | - María T. Llinás
- Department of Physiology, University of Murcia, Regional Campus of International Excellence “Mare Nostrum,” Murcia, Instituto Murciano de Investigación Biomédica, Spain; and
| | | | - F. Javier Salazar
- Department of Physiology, University of Murcia, Regional Campus of International Excellence “Mare Nostrum,” Murcia, Instituto Murciano de Investigación Biomédica, Spain; and
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Hultström M, Paliege A, Skogstrand T, Fähling M. Nucleic acid binding of annexin A2 is regulated through angiotensin II/AT1 signaling in kidneys of hypertensive rats (1088.2). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.1088.2] [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: 11/11/2022]
Affiliation(s)
- Michael Hultström
- Anaesthesiology and Intensive Care Medicine UPPSALA UniversityUPPSALASweden
- Department of medical cellbiology UPPSALA UniversityUPPSALASweden
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Dathe C, Daigeler A, Jankowski V, Jankowski J, Mutig K, Bachmann S, Paliege A. Annexin A2 mediates apical trafficking of renal Na‐K‐2Cl cotransporter (892.22). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.892.22] [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: 11/11/2022]
Affiliation(s)
- Christin Dathe
- Institut für Vegetative Anatomie Charite ‐Universitätsmedizin BerlinBerlinGermany
| | - Anna‐Lena Daigeler
- Institut für Vegetative Anatomie Charite ‐Universitätsmedizin BerlinBerlinGermany
| | - Vera Jankowski
- Centrum für Innere Medizin mit Gastroenterologie und Nephrologie Charite ‐UniversitätsmedizinBerlinBerlinGermany
| | - Joachim Jankowski
- Centrum für Innere Medizin mit Gastroenterologie und Nephrologie Charite ‐UniversitätsmedizinBerlinBerlinGermany
| | - Kerim Mutig
- Institut für Vegetative Anatomie Charite ‐Universitätsmedizin BerlinBerlinGermany
| | - Sebastian Bachmann
- Institut für Vegetative Anatomie Charite ‐Universitätsmedizin BerlinBerlinGermany
| | - Alexander Paliege
- Medizinische Klinik m.S. Nephrologie CCM ‐ Forschung Charite ‐UniversitätsmedizinBerlinBerlinGermany
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Dathe C, Daigeler AL, Seifert W, Jankowski V, Mrowka R, Kalis R, Wanker E, Mutig K, Bachmann S, Paliege A. Annexin A2 mediates apical trafficking of renal Na⁺-K⁺-2Cl⁻ cotransporter. J Biol Chem 2014; 289:9983-97. [PMID: 24526686 DOI: 10.1074/jbc.m113.540948] [Citation(s) in RCA: 17] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The furosemide-sensitive Na(+)-K(+)-2Cl(-) cotransporter (NKCC2) is responsible for urine concentration and helps maintain systemic salt homeostasis. Its activity depends on trafficking to, and insertion into, the apical membrane, as well as on phosphorylation of conserved N-terminal serine and threonine residues. Vasopressin (AVP) signaling via PKA and other kinases activates NKCC2. Association of NKCC2 with lipid rafts facilitates its AVP-induced apical translocation and activation at the surface. Lipid raft microdomains typically serve as platforms for membrane proteins to facilitate their interactions with other proteins, but little is known about partners that interact with NKCC2. Yeast two-hybrid screening identified an interaction between NKCC2 and the cytosolic protein, annexin A2 (AnxA2). Annexins mediate lipid raft-dependent trafficking of transmembrane proteins, including the AVP-regulated water channel, aquaporin 2. Here, we demonstrate that AnxA2, which binds to phospholipids in a Ca(2+)-dependent manner and may organize microdomains, is codistributed with NKCC2 to promote its apical translocation in response to AVP stimulation and low chloride hypotonic stress. NKCC2 and AnxA2 interact in a phosphorylation-dependent manner. Phosphomimetic AnxA2 carrying a mutant phosphoacceptor (AnxA2-Y24D-GFP) enhanced surface expression and raft association of NKCC2 by 5-fold upon low chloride hypotonic stimulation, whereas AnxA2-Y24A-GFP and PKC-dependent AnxA2-S26D-GFP did not. As the AnxA2 effect involved only nonphosphorylated NKCC2, it appears to affect NKCC2 trafficking. Overexpression or knockdown experiments further supported the role of AnxA2 in the apical translocation and surface expression of NKCC2. In summary, this study identifies AnxA2 as a lipid raft-associated trafficking factor for NKCC2 and provides mechanistic insight into the regulation of this essential cotransporter.
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Affiliation(s)
- Christin Dathe
- From the Department of Anatomy, Charité-Universitätsmedizin Berlin, 10115 Berlin
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Fähling M, Mathia S, Paliege A, Koesters R, Mrowka R, Peters H, Persson PB, Neumayer HH, Bachmann S, Rosenberger C. Tubular von Hippel-Lindau knockout protects against rhabdomyolysis-induced AKI. J Am Soc Nephrol 2013; 24:1806-19. [PMID: 23970125 DOI: 10.1681/asn.2013030281] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Renal hypoxia occurs in AKI of various etiologies, but adaptation to hypoxia, mediated by hypoxia-inducible factor (HIF), is incomplete in these conditions. Preconditional HIF activation protects against renal ischemia-reperfusion injury, yet the mechanisms involved are largely unknown, and HIF-mediated renoprotection has not been examined in other causes of AKI. Here, we show that selective activation of HIF in renal tubules, through Pax8-rtTA-based inducible knockout of von Hippel-Lindau protein (VHL-KO), protects from rhabdomyolysis-induced AKI. In this model, HIF activation correlated inversely with tubular injury. Specifically, VHL deletion attenuated the increased levels of serum creatinine/urea, caspase-3 protein, and tubular necrosis induced by rhabdomyolysis in wild-type mice. Moreover, HIF activation in nephron segments at risk for injury occurred only in VHL-KO animals. At day 1 after rhabdomyolysis, when tubular injury may be reversible, the HIF-mediated renoprotection in VHL-KO mice was associated with activated glycolysis, cellular glucose uptake and utilization, autophagy, vasodilation, and proton removal, as demonstrated by quantitative PCR, pathway enrichment analysis, and immunohistochemistry. In conclusion, a HIF-mediated shift toward improved energy supply may protect against acute tubular injury in various forms of AKI.
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Jankowska M, Walerzak A, Debska-Slizien A, Rutkowski B, Frank V, Decker E, Bachmann N, Eisenberger T, Decker C, Bolz HJ, Bergmann C, Kurt B, Paliege A, Willam C, Schwarzensteiner I, Schucht K, Neymeyer H, Sequeira-Lopez MLS, Bachmann S, Gomez RA, Eckardt KU, Kurtz A, Bissler JJ, Zonnenberg B, Frost M, Radzikowska E, Sauter M, Nonomura N, de Vries P, Lam D, Miao S, Cauwel H, Kingswood JC. Cystic kidney diseases. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jensen JM, Mose FH, Bech JN, Pedersen EB, Saritas T, Borschewski A, McCormick J, Paliege A, Dathe C, Uchida S, Bleich M, Himmerkus N, Delpire E, Ellison D, Bachmann S, Mutig K. Fine-tuning of sodium transport in the distal nephron. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft182] [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
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Mederle K, Mutig K, Paliege A, Carota I, Bachmann S, Castrop H, Oppermann M. Loss of WNK3 is compensated for by the WNK1/SPAK axis in the kidney of the mouse. Am J Physiol Renal Physiol 2013; 304:F1198-209. [DOI: 10.1152/ajprenal.00288.2012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
WNK3 kinase is expressed throughout the nephron and acts as a positive regulator of NKCC2 and NCC in vitro. Here we addressed the in vivo relevance of WNK3 using WNK3-deficient mice. WNK3−/− mice were viable and showed no gross abnormalities. The net tubular function was similar in wild-type (WT) and WNK3−/− mice as assessed by determination of 24-h urine output (1.63 ± .06 in WT and 1.55 ± .1 ml in WNK3−/−, n=16; P=0.42) and ambient urine osmolarity (1,804 ± 62 in WT vs. 1,819 ± 61 mosmol/kg in WNK3−/−, n=40; P=0.86). Water restriction (48 h) increased urine osmolarity similarly in both genotypes to 3,440 ± 220 and 3,200 ± 180 mosmol/kg in WT and WNK3−/− mice, respectively ( n=11; P=0.41). The glomerular filtration rate (343 ± 22 vs. 315 ± 13 ml/min), renal blood flow (1.35 ± 0.1 vs. 1.42 ± 0.04 ml), and plasma renin concentration (94 ± 18 vs. 80 ± 13 ng ANG I·ml−1·h−1) were similar between WT and WNK3−/− mice ( n=13; P=0.54). WNK1 was markedly upregulated in WNK3-deficient mice, whereas the expression of WNK4 was similar in both genotypes. When the mice were fed a salt-restricted diet [0.02% NaCl (wt/wt)] the levels of pSPAK/OSR1, pNKCC2, and pNCC were enhanced in both genotypes compared with the baseline conditions, with the levels in WNK3−/− exceeding those in WT mice. The upregulation of pSPAK/OSR1, pNKCC2, and pNCC in WNK3−/− mice relative to the levels in WT mice when fed a low-salt diet was paralleled by an increased diuresis in response to hydrochlorothiazide. In summary, the overall relevance of WNK3 for the renal reabsorption of NaCl appears to be limited and can be largely compensated for by the activation of WNK3-independent pathways. Consequently, our data suggest that WNK3 may serve as a member of a kinase network that facilitates the fine-tuning of renal transepithelial NaCl transport.
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Affiliation(s)
- Katharina Mederle
- Institute of Physiology, University of Regensburg, Regensburg, Germany
| | - Kerim Mutig
- Department of Anatomy, Charité, Berlin, Germany; and
| | | | - Isabel Carota
- Institute of Physiology, University of Regensburg, Regensburg, Germany
| | | | - Hayo Castrop
- Institute of Physiology, University of Regensburg, Regensburg, Germany
| | - Mona Oppermann
- Children's Hospital, University Medical Center, University of Regensburg, Regensburg, Germany
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Mutig K, Borschewski A, Willnow T, Dathe C, Paliege A, Ferreri N, Bachmann S. Interactions between sorting protein‐related receptor and calcineurin to activate renal Na‐K‐2Cl cotransporter. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.912.7] [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: 11/11/2022]
Affiliation(s)
- Kerim Mutig
- Institut für Vegetative AnatomieCharité ‐ Universitätsmedizin BerlinBerlinGermany
| | - Aljona Borschewski
- Institut für Vegetative AnatomieCharité ‐ Universitätsmedizin BerlinBerlinGermany
| | - Thomas Willnow
- Max‐Delbrück‐ Centrum für Molekulare MedizinBerlinGermany
| | - Christin Dathe
- Institut für Vegetative AnatomieCharité ‐ Universitätsmedizin BerlinBerlinGermany
| | - Alexander Paliege
- Institut für Vegetative AnatomieCharité ‐ Universitätsmedizin BerlinBerlinGermany
| | | | - Sebastian Bachmann
- Institut für Vegetative AnatomieCharité ‐ Universitätsmedizin BerlinBerlinGermany
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Dietrich A, Mathia S, Kaminski H, Mutig K, Rosenberger C, Mrowka R, Bachmann S, Paliege A. Chronic activation of vasopressin V2 receptor signalling lowers renal medullary oxygen levels in rats. Acta Physiol (Oxf) 2013; 207:721-31. [PMID: 23347696 DOI: 10.1111/apha.12067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 12/27/2012] [Accepted: 01/17/2013] [Indexed: 12/17/2022]
Abstract
AIM In the present study, we aimed to elucidate the effects of chronic vasopressin administration on renal medullary oxygen levels. METHODS Adult Sprague Dawley or vasopressin-deficient Brattleboro rats were treated with the vasopressin V2 receptor agonist, desmopressin (5 ng/h; 3d), or its vehicle via osmotic minipumps. Immunostaining for pimonidazole and the transcription factor HIF-1α (hypoxia-inducible factor-1α) were used to identify hypoxic areas. Activation of HIF-target gene expression following desmopressin treatment was studied by microarray analysis. RESULTS Pimonidazole staining was detected in the outer and inner medulla of desmopressin-treated rats, whereas staining in control animals was weak or absent. HIF-1α immunostaining demonstrated nuclear accumulation in the papilla of desmopressin-treated animals, whereas no staining was observed in the controls. Gene expression analysis revealed significant enrichment of HIF-target genes in the group of desmopressin-regulated gene products (P = 2.6*10(-21) ). Regulated products included insulin-like growth factor binding proteins 1 and 3, angiopoietin 2, fibronectin, cathepsin D, hexokinase 2 and cyclooxygenase 2. CONCLUSION Our results demonstrate that an activation of the renal urine concentrating mechanism by desmopressin causes renal medullary hypoxia and an upregulation of hypoxia-inducible gene expression.
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Affiliation(s)
- A. Dietrich
- Department of Anatomy; Charité-Universitätsmedizin Berlin; Berlin; Germany
| | - S. Mathia
- Department of Nephrology; Charité-Universitätsmedizin Berlin; Berlin; Germany
| | - H. Kaminski
- Department of Anatomy; Charité-Universitätsmedizin Berlin; Berlin; Germany
| | - K. Mutig
- Department of Anatomy; Charité-Universitätsmedizin Berlin; Berlin; Germany
| | - C. Rosenberger
- Department of Nephrology; Charité-Universitätsmedizin Berlin; Berlin; Germany
| | - R. Mrowka
- Experimentelle Nephrologie; KIM III; Universitästsklinikum Jena; Jena; Germany
| | - S. Bachmann
- Department of Anatomy; Charité-Universitätsmedizin Berlin; Berlin; Germany
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Mathia S, Paliege A, Koesters R, Peters H, Neumayer HH, Bachmann S, Rosenberger C. Action of hypoxia-inducible factor in liver and kidney from mice with Pax8-rtTA-based deletion of von Hippel-Lindau protein. Acta Physiol (Oxf) 2013; 207:565-76. [PMID: 23384425 DOI: 10.1111/apha.12058] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 11/15/2012] [Accepted: 12/19/2012] [Indexed: 01/08/2023]
Abstract
AIM Von Hippel-Lindau protein (VHL) provides the degradation of hypoxia-inducible factor (HIF). Tetracycline-induced, Pax8-rtTA-based knockout of VHL (VHL-KO) affects all renal tubules and periportal hepatocytes and leads to sustained upregulation of HIF. Here, we study the phenotype of VHL-KO in both organs, the time course of changes, and long-term morpho-functional outcome. METHODS Mice with doxycycline-induced VHL-KO and controls (CON) were followed for up to 9 months. Systemic and tissue parameters were evaluated using clinical chemistry, histology, immunohistochemistry, RT-PCR and in situ hybridisation. RESULTS At day 3 following VHL-KO, substantial abundance of HIF-1α and -2α was detected in the nuclei of hepatocytes and renal tubular epithelia. Hypoxia, induced by bleeding anaemia, did not further augment HIF signal. Erythropoietin mRNA was detectable in hepatocytes but not in the kidney. Vascular endothelial growth factor mRNA was upregulated in kidney but not in liver. At day 7 following VHL-KO, the renal capillary density was enhanced, reaching its maximum at day 14. Blood haemoglobin increased constantly up to day 28 (23.3 vs. 15.8 g dL(-1) , VHL-KO vs. CON). Thereafter, it was kept within the normal range by weekly blood collections. Pathological changes were absent from kidney and liver 9 months after VHL-KO. CONCLUSIONS Inducible, Pax8-rtTA-based deletion of VHL leads to organ-specific expression of epithelial HIF and erythropoietin in liver and kidney without causing pathological changes. Uniform, maximal and sustained HIF activation along the renal tubule may serve to study the potential benefits of hypoxia adaptation in experimental renal injury.
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Affiliation(s)
- S. Mathia
- Department of Nephrology and Renal Transplantation; Charité-Universitaetsmedizin Berlin; Berlin; Germany
| | | | - R. Koesters
- INSERM/Université Pierre et Marie Curie; Tenon Hospital; Paris; France
| | - H. Peters
- Department of Nephrology and Renal Transplantation; Charité-Universitaetsmedizin Berlin; Berlin; Germany
| | - H.-H. Neumayer
- Department of Nephrology and Renal Transplantation; Charité-Universitaetsmedizin Berlin; Berlin; Germany
| | - S. Bachmann
- Department of Anatomy; Charité-Universitaetsmedizin Berlin; Berlin; Germany
| | - C. Rosenberger
- Department of Nephrology and Renal Transplantation; Charité-Universitaetsmedizin Berlin; Berlin; Germany
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Saritas T, Borschewski A, McCormick JA, Paliege A, Dathe C, Uchida S, Terker A, Himmerkus N, Bleich M, Demaretz S, Laghmani K, Delpire E, Ellison DH, Bachmann S, Mutig K. SPAK differentially mediates vasopressin effects on sodium cotransporters. J Am Soc Nephrol 2013; 24:407-18. [PMID: 23393317 DOI: 10.1681/asn.2012040404] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Activation of the Na(+)-K(+)-2Cl(-)-cotransporter (NKCC2) and the Na(+)-Cl(-)-cotransporter (NCC) by vasopressin includes their phosphorylation at defined, conserved N-terminal threonine and serine residues, but the kinase pathways that mediate this action of vasopressin are not well understood. Two homologous Ste20-like kinases, SPS-related proline/alanine-rich kinase (SPAK) and oxidative stress responsive kinase (OSR1), can phosphorylate the cotransporters directly. In this process, a full-length SPAK variant and OSR1 interact with a truncated SPAK variant, which has inhibitory effects. Here, we tested whether SPAK is an essential component of the vasopressin stimulatory pathway. We administered desmopressin, a V2 receptor-specific agonist, to wild-type mice, SPAK-deficient mice, and vasopressin-deficient rats. Desmopressin induced regulatory changes in SPAK variants, but not in OSR1 to the same degree, and activated NKCC2 and NCC. Furthermore, desmopressin modulated both the full-length and truncated SPAK variants to interact with and phosphorylate NKCC2, whereas only full-length SPAK promoted the activation of NCC. In summary, these results suggest that SPAK mediates the effect of vasopressin on sodium reabsorption along the distal nephron.
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Affiliation(s)
- Turgay Saritas
- Department of Anatomy, Charité Universitätsmedizin, Berlin, Germany
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Kurt B, Paliege A, Willam C, Schwarzensteiner I, Schucht K, Neymeyer H, Sequeira-Lopez MLS, Bachmann S, Gomez RA, Eckardt KU, Kurtz A. Deletion of von Hippel-Lindau protein converts renin-producing cells into erythropoietin-producing cells. J Am Soc Nephrol 2013; 24:433-44. [PMID: 23393316 DOI: 10.1681/asn.2012080791] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
States of low perfusion pressure of the kidney associate with hyperplasia or expansion of renin-producing cells, but it is unknown whether hypoxia-triggered genes contribute to these changes. Here, we stabilized hypoxia-inducible transcription factors (HIFs) in mice by conditionally deleting their negative regulator, Vhl, using the Cre/loxP system with renin-1d promoter-driven Cre expression. Vhl (−/−(REN)) mice were viable and had normal BP. Deletion of Vhl resulted in constitutive accumulation of HIF-2α in afferent arterioles and glomerular cells and HIF-1α in collecting duct cells of the adult kidney. The preglomerular vascular tree developed normally, but far fewer renin-expressing cells were present, with more than 70% of glomeruli not containing renin cells at the typical juxtaglomerular position. Moreover, these mice had an attenuated expansion of renin-producing cells in response to a low-salt diet combined with an ACE inhibitor. However, renin-producing cells of Vhl (−/−(REN)) mice expressed the erythropoietin gene, and they were markedly polycythemic. Taken together, these results suggest that hypoxia-inducible genes, regulated by VHL, are essential for normal development and physiologic adaptation of renin-producing cells. In addition, deletion of Vhl shifts the phenotype of juxtaglomerular cells from a renin- to erythropoietin-secreting cell type, presumably in response to HIF-2 accumulation.
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Affiliation(s)
- Birguel Kurt
- Institute of Physiology, University of Regensburg, D-93053 Regensburg, Germany.
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Seidel S, Neymeyer H, Kahl T, Röschel T, Mutig K, Flower R, Schnermann J, Bachmann S, Paliege A. Annexin A1 modulates macula densa function by inhibiting cyclooxygenase 2. Am J Physiol Renal Physiol 2012; 303:F845-54. [DOI: 10.1152/ajprenal.00704.2011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Annexin A1 (ANXA1) exerts anti-inflammatory effects through multiple mechanisms including inhibition of prostaglandin synthesis. Once secreted, ANXA1 can bind to G protein-coupled formyl peptide receptors (Fpr) and activate diverse cellular signaling pathways. ANXA1 is known to be expressed in cells of the juxtaglomerular apparatus, but its relation to the expression of cyclooxygenase 2 (COX-2) in thick ascending limb and macula densa cells has not been elucidated. We hypothesized that ANXA1 regulates the biosynthesis of COX-2. ANXA1 abundance in rat kidney macula densa was extensively colocalized with COX-2 (95%). Furosemide, an established stimulus for COX-2 induction, caused enhanced expression of both ANXA1 and COX-2 with maintained colocalization (99%). In ANXA1-deficient mice, COX-2-positive cells were more numerous than in control mice (+107%; normalized to glomerular number; P < 0.05) and renin expression was increased (+566%; normalized to glomerular number; P < 0.05). Cultured macula densa cells transfected with full-length rat ANXA1 revealed downregulation of COX-2 mRNA (−59%; P < 0.05). Similarly, treatment with dexamethasone suppressed COX-2 mRNA in the cells (−49%; P < 0.05), while inducing ANXA1 mRNA (+56%; P < 0.05) and ANXA1 protein secretion. Inhibition of the ANXA-1 receptor Fpr1 with cyclosporin H blunted the effect of dexamethasone on COX-2 expression. These data show that ANXA1 exerts an inhibitory effect on COX-2 expression in the macula densa. ANXA1 may be a novel intrinsic modulator of renal juxtaglomerular regulation by inhibition of PGE2 synthesis.
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Affiliation(s)
- S. Seidel
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany; and
| | - H. Neymeyer
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany; and
| | - T. Kahl
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany; and
| | - T. Röschel
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany; and
| | - K. Mutig
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany; and
| | - R. Flower
- Department of Biochemical Pharmacology, William Harvey Research Institute, Queen Mary, University of London, London, United Kingdom; and
| | - J. Schnermann
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland
| | - S. Bachmann
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany; and
| | - A. Paliege
- Department of Anatomy, Charité-Universitätsmedizin Berlin, Berlin, Germany; and
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Hultström M, Leh S, Paliege A, Bachmann S, Skogstrand T, Iversen BM. Collagen-binding proteins in age-dependent changes in renal collagen turnover: microarray analysis of mRNA expression. Physiol Genomics 2012; 44:576-86. [DOI: 10.1152/physiolgenomics.00186.2011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Aging is associated with progressive structural and functional deterioration of the kidney. Among the morphological changes associated with renal aging is an accumulation of extracellular matrix (ECM) in the glomeruli and tubuloinsterstitium, which may ultimately lead to the development of renal fibrosis. The mechanisms governing the regulation of ECM metabolism during renal aging are only incompletely defined. We present data from a genome-wide mRNA expression study on renal tissue from 90 wk old male Wistar rats and 10 wk old controls using Illumina BeadArray cDNA microarray. Regulation of candidate gene products was verified by real-time PCR. Morphological changes were evaluated by routine histological methods. Activated fibroblasts were identified by their expression of alpha-smooth muscle actin and collagen I. Morphological analysis demonstrated an expansion of the tubulointerstitial compartment with increased amounts of fibrous collagen but no overt glomerular or tubular damage in the aged rats. Activated fibroblasts were readily detectable in the adventitial layer of large renal vessels in controls and were not found in the old animals. In agreement with this finding, gene expression analysis revealed significant downregulation of collagen I mRNA along with numerous other ECM components. Concomitantly, collagen-stabilizing proteins were induced, whereas matrix metalloproteinase 9, an enzyme involved in collagen breakdown, was reduced. In conclusion, our results suggest that ECM expansion during renal aging results from an augmented stabilization in conjunction with a reduced breakdown of collagen fibers. Collagen stabilizing proteins may be essential for the control of renal ECM turnover and the pathogenesis of kidney fibrosis.
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Affiliation(s)
- Michael Hultström
- Renal Research Group, Institute of Medicine, University of Bergen
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Sabine Leh
- Renal Research Group, Institute of Medicine, University of Bergen
- Department of Pathology, Haukeland University Hospital, Bergen, Norway; and
| | | | | | - Trude Skogstrand
- Renal Research Group, Institute of Medicine, University of Bergen
| | - Bjarne M. Iversen
- Renal Research Group, Institute of Medicine, University of Bergen
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
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48
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Mederle K, Oppermann M, Paliege A, Castrop H. Loss of Wnk3 is Compensated for by ks‐Wnk1 in the Kidney of the Mouse. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.867.33] [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: 11/11/2022]
Affiliation(s)
| | - Mona Oppermann
- Institute of PhysiologyUniversity of RegensburgRegensburgGermany
| | | | - Hayo Castrop
- Institute of PhysiologyUniversity of RegensburgRegensburgGermany
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49
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Borschewski A, Willnow T, Dathe C, Paliege A, Ferreri N, Bachmann S, Mutig K. Sorting protein‐related receptor SorLA is involved in regulation of renal Na+‐K+‐2Cl‐cotransporter through interaction with an isoform of calcineurin phosphatase. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1152.3] [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: 11/11/2022]
Affiliation(s)
| | - Thomas Willnow
- Max-Delbrück-Centrum für Molekulare MedizinBerlinGermany
| | | | | | | | | | - Kerim Mutig
- Charité Universitätsmedizin BerlinBerlinGermany
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50
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Kaminski HJ, Dathe C, Neymeyer H, Brand D, Loof T, Peters H, Bachmann S, Paliege A. Annexin A2 acts as scaffolding receptor for plasminogen and tissue plasminogen activator in renal epithelia. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.885.13] [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: 11/11/2022]
Affiliation(s)
| | - Christin Dathe
- vegetative AnatomieCharité Universitätsklinikum BerlinBerlinGermany
| | - Hanna Neymeyer
- vegetative AnatomieCharité Universitätsklinikum BerlinBerlinGermany
| | - Daniel Brand
- NephrologieCharité Universitätsmedizin BerlinBerlinGermany
| | - Tanja Loof
- NephrologieCharité Universitätsmedizin BerlinBerlinGermany
| | - Harm Peters
- NephrologieCharité Universitätsmedizin BerlinBerlinGermany
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