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Berger S, Barnett N, Thakur S. Using Auto-Videosomnography to Study the Relation between Sleep and Nightwaking in Infancy. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.565] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Berger S, Barnett N, Thakur S. Parents’ Values Shape Parenting Practices and Beliefs that Impact Infant Sleep. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.544] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Freire C, Ramsey JD, Pho H, Kojima R, Zhao Y, Kim L, Anokye-Danso F, Berger S, Ahima RS, Batrakova EV, Kabanov AV, Polotsky VY. Leptin-loaded Extracellular Vesicles Treat Sleep-disordered Breathing in Mice with Obesity. Am J Respir Cell Mol Biol 2022; 67:720-723. [PMID: 36454084 PMCID: PMC9743189 DOI: 10.1165/rcmb.2022-0229le] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Affiliation(s)
- Carla Freire
- The Johns Hopkins School of MedicineBaltimore, Maryland
| | - Jacob D. Ramsey
- University of North Carolina at Chapel HillChapel Hill, North Carolina
| | - Huy Pho
- The Johns Hopkins School of MedicineBaltimore, Maryland
| | - Ryo Kojima
- University of North Carolina at Chapel HillChapel Hill, North Carolina
| | - Yuling Zhao
- University of North Carolina at Chapel HillChapel Hill, North Carolina
| | - Lenise Kim
- The Johns Hopkins School of MedicineBaltimore, Maryland
| | | | - Slava Berger
- The Johns Hopkins School of MedicineBaltimore, Maryland
| | | | | | - Alexander V. Kabanov
- University of North Carolina at Chapel HillChapel Hill, North Carolina
- M.V. Lomonosov Moscow State UniversityMoscow, Russia
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Berger S, Hinse P, Eschenburg S, Reubold T. Structural and functional characterization of altronate oxidoreductase from Escherichia coli. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322093561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Freire C, Pho H, Ramsey JD, Zhao Y, Kim LJ, Berger S, Anokye‐Danso F, Sennes LU, Ahima RS, Batrakova EV, Kabanov AV, Polotsky VY. Treatment of Sleep Disordered Breathing with Leptin Loaded Extracellular Vesicles. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.0r727] [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)
- Carla Freire
- Pulmonary and Critical CareJohns Hopkins UniversityBaltimoreMD
- OtolaryngologyJohns Hopkins UniversityBaltimoreMD
| | - Huy Pho
- Pulmonary and Critical CareJohns Hopkins UniversityBaltimoreMD
| | - Jacob D. Ramsey
- Center for Nanotechnology in Drug DeliveryUniversity of North Carolina at Chapel HillChapel HillNC
| | - Yuling Zhao
- Center for Nanotechnology in Drug DeliveryUniversity of North Carolina at Chapel HillChapel HillNC
| | - Lenise J. Kim
- Pulmonary and Critical CareJohns Hopkins UniversityBaltimoreMD
| | - Slava Berger
- Department of ImmunologyTechnion – Israel Institute of TechnologyHaifa
| | | | | | | | - Elena V. Batrakova
- Center for Nanotechnology in Drug DeliveryUniversity of North Carolina at Chapel HillChapel HillNC
| | - Alexander V. Kabanov
- Center for Nanotechnology in Drug DeliveryUniversity of North Carolina at Chapel HillChapel HillNC
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Grootjans H, Verschuuren E, van Gemert A, Berger S, Kerstjens H, Droogh J, Gan T. Long-Term Renal Outcome in Patients Bridged on ICU for Lung Transplantation. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1058] [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: 11/16/2022] Open
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Joachim A, Cavalleri JMV, Berger S. [Equine anaplasmosis and equine piroplasmosis in Germany, Austria and Switzerland - previously anecdotal, now relevant?]. SCHWEIZ ARCH TIERH 2022; 164:35-50. [PMID: 34983738 DOI: 10.17236/sat00335] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Equine granulocytic anaplasmosis (EGA) and equine piroplasmosis (EP) are triggered by tick-borne pathogens - the intracellular bacterium Anaplasma phagocytophilum and the intracellular protozoa Babesia caballi and Theileria equi. These pathogens attack cells in the blood stream and cause similar clinical symptoms and changes in laboratory values. Although the treatment principles are naturally different, similarities in prophylaxis exists due to the transmission route. Tick transmitted pathogens can play a greater role in equine medicine in the future due to various factors, such as the tendency of relevant tick species to spread, but also the increasing import and travel activities of and with pets (both in the context of sporting events and as a leisure activity). While EGA is endemic in Central Europe, EP is a sporadic disease in Switzerland, Austria and Germany. However, EP must be viewed as underdiagnosed, as horses persistently infected with T. equi are also repeatedly detected in Central Europe. These diseases should be considered in horses with a fever and corresponding laboratory changes. Available diagnostic tests are direct pathogen detection by blood smear or PCR, and, indirect antibody detection, which is considered to be highly sensitive and (as a competitive ELISA) also very specific. Acute infections can be detected with PCR, serology is more suitable for chronic infections. A pathogen-free condition after treatment can be demonstrated with decreasing antibody titers in combination with repeated PCR tests. In addition, clinically healthy horses infected with T. equi should be identified by antibody detection and appropriate preventative transmission measures must be initiated. The prophylaxis of tick bites in horses is difficult due to the high exposure, and long-term tick bite prevention can hardly be guaranteed. Monitoring of tick activity and strict measures to prevent the spread of the pathogen within the tick population are therefore of great importance.
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Affiliation(s)
- A Joachim
- Institut für Parasitologie, Vetmeduni Wien, Österreich
| | | | - S Berger
- Universitätsklinik für Pferde, Vetmeduni Wien, Österreich
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Berger S, Shaw DR, Berben T, Ouboter HT, In 't Zandt MH, Frank J, Reimann J, Jetten MSM, Welte CU. Current production by non-methanotrophic bacteria enriched from an anaerobic methane-oxidizing microbial community. Biofilm 2021; 3:100054. [PMID: 34308332 PMCID: PMC8258643 DOI: 10.1016/j.bioflm.2021.100054] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/12/2021] [Accepted: 05/19/2021] [Indexed: 12/21/2022] Open
Abstract
In recent years, the externalization of electrons as part of respiratory metabolic processes has been discovered in many different bacteria and some archaea. Microbial extracellular electron transfer (EET) plays an important role in many anoxic natural or engineered ecosystems. In this study, an anaerobic methane-converting microbial community was investigated with regard to its potential to perform EET. At this point, it is not well-known if or how EET confers a competitive advantage to certain species in methane-converting communities. EET was investigated in a two-chamber electrochemical system, sparged with methane and with an applied potential of +400 mV versus standard hydrogen electrode. A biofilm developed on the working electrode and stable low-density current was produced, confirming that EET indeed did occur. The appearance and presence of redox centers at −140 to −160 mV and at −230 mV in the biofilm was confirmed by cyclic voltammetry scans. Metagenomic analysis and fluorescence in situ hybridization of the biofilm showed that the anaerobic methanotroph ‘Candidatus Methanoperedens BLZ2’ was a significant member of the biofilm community, but its relative abundance did not increase compared to the inoculum. On the contrary, the relative abundance of other members of the microbial community significantly increased (up to 720-fold, 7.2% of mapped reads), placing these microorganisms among the dominant species in the bioanode community. This group included Zoogloea sp., Dechloromonas sp., two members of the Bacteroidetes phylum, and the spirochete Leptonema sp. Genes encoding proteins putatively involved in EET were identified in Zoogloea sp., Dechloromonas sp. and one member of the Bacteroidetes phylum. We suggest that instead of methane, alternative carbon sources such as acetate were the substrate for EET. Hence, EET in a methane-driven chemolithoautotrophic microbial community seems a complex process in which interactions within the microbial community are driving extracellular electron transfer to the electrode.
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Affiliation(s)
- S Berger
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands
| | - D R Shaw
- Biological and Environmental Science and Engineering Division, Water Desalination and Reuse Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
| | - T Berben
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands
| | - H T Ouboter
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
| | - M H In 't Zandt
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Netherlands Earth System Science Center, Utrecht University, Utrecht, the Netherlands
| | - J Frank
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
| | - J Reimann
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands
| | - M S M Jetten
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Netherlands Earth System Science Center, Utrecht University, Utrecht, the Netherlands.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
| | - C U Welte
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
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Pho H, Berger S, Freire C, Kim LJ, Shin MK, Streeter SR, Hosamane N, Cabassa ME, Anokye-Danso F, Dergacheva O, Amorim MR, Fleury-Curado T, Jun JC, Schwartz AR, Ahima RS, Mendelowitz D, Polotsky VY. Leptin receptor expression in the dorsomedial hypothalamus stimulates breathing during NREM sleep in db/db mice. Sleep 2021; 44:6149135. [PMID: 33624805 PMCID: PMC8193564 DOI: 10.1093/sleep/zsab046] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 02/06/2021] [Indexed: 12/12/2022] Open
Abstract
STUDY OBJECTIVES Obesity leads to obstructive sleep apnea (OSA), which is recurrent upper airway obstruction during sleep, and obesity hypoventilation syndrome (OHS), hypoventilation during sleep resulting in daytime hypercapnia. Impaired leptin signaling in the brain was implicated in both conditions, but mechanisms are unknown. We have previously shown that leptin stimulates breathing and treats OSA and OHS in leptin-deficient ob/ob mice and leptin-resistant diet-induced obese mice and that leptin's respiratory effects may occur in the dorsomedial hypothalamus (DMH). We hypothesized that leptin receptor LepRb-deficient db/db mice have obesity hypoventilation and that restoration of leptin signaling in the DMH will increase ventilation during sleep in these animals. METHODS We measured arterial blood gas in unanesthetized awake db/db mice. We subsequently infected these animals with Ad-LepRb or control Ad-mCherry virus into the DMH and measured ventilation during sleep as well as CO2 production after intracerebroventricular (ICV) infusions of phosphate-buffered saline or leptin. RESULTS Awake db/db mice had elevated CO2 levels in the arterial blood. Ad-LepRb infection resulted in LepRb expression in the DMH neurons in a similar fashion to wildtype mice. In LepRb-DMH db/db mice, ICV leptin shortened REM sleep and increased inspiratory flow, tidal volume, and minute ventilation during NREM sleep without any effect on the quality of NREM sleep or CO2 production. Leptin had no effect on upper airway obstruction in these animals. CONCLUSION Leptin stimulates breathing and treats obesity hypoventilation acting on LepRb-positive neurons in the DMH.
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Affiliation(s)
- Huy Pho
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Slava Berger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Carla Freire
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lenise J Kim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Mi-Kyung Shin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Stone R Streeter
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Nishitha Hosamane
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Meaghan E Cabassa
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Frederick Anokye-Danso
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Olga Dergacheva
- Department of Pharmacology and Physiology, George Washington University, Washington, DC, USA
| | - Mateus R Amorim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Thomaz Fleury-Curado
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jonathan C Jun
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Alan R Schwartz
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Otorhinolaryngology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Rexford S Ahima
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - David Mendelowitz
- Department of Pharmacology and Physiology, George Washington University, Washington, DC, USA
| | - Vsevolod Y Polotsky
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Corresponding author. Vsevolod (Seva) Y. Polotsky, Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, 5501 Hopkins Bayview Circle, Johns Hopkins Asthma and Allergy Center, Rm 4B65, Baltimore, MD 21224.
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Freire C, Pho H, Ramsey J, Streeter S, Kojima R, Berger S, Fleury-Curado T, Sokolsky M, Batrakova E, Kabanov A, Polotsky V. 003 Treatment of Sleep Disordered Breathing with Leptin Loaded Exosomes. Sleep 2021. [DOI: 10.1093/sleep/zsab072.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Obstructive sleep apnea (OSA) is characterized by recurrent periods of upper airway obstruction. The prevalence of OSA exceeds 50% in obese individuals and in 10–20% of obese patients OSA coexists with obesity hypoventilation syndrome (OHS) defined as daytime hypercapnia and hypoventilation during sleep attributed to the depressed control of breathing. There is no effective pharmacotherapy for OSA and OHS. Leptin is a potent respiratory stimulant and a potential therapeutic candidate. However, diet-induced obesity (DIO) results in reduced permeability of the blood-brain barrier (BBB) for leptin. Previous studies have shown that the BBB can be penetrated by exosomes, natural nanoparticles that can be used as drug delivery vehicles. In this study, we aimed to determine if exosomes overcome the BBB and treat OSA and OHS in DIO mice.
Methods
o examine the ability of exosomes to cross the BBB, male, lean (n=5) and DIO (n=5) C57BL/6J mice were injected with fluorescent exosomes or saline into the lateral tail vein. After 4h fluorescent exosomes biodistribution was evaluated by an in vitro imaging system (IVIS). Saline injected mice images were used for background adjustment. A separate subgroup of male, DIO (n=10) and lean (n=10) mice were headmounted with EEG and nuchal EMG leads. Sleep studies were performed in a plethysmography chamber and mice received saline, empty exosomes, free leptin, or leptin-loaded exosomes in a crossover manner.
Results
Exosomes were successfully delivered to the brain and the transport across the BBB was more efficient in DIO mice with 2-times greater relative fluorescence units measured in DIO when compared to lean mice (p<0.005). In DIO mice, exosomal leptin induced dramatic 1.7-2.2-fold increases in minute ventilation and 1.5-2.0-fold increases in maximal inspiratory flow during both flow-limited (upper airway/sleep apnea) and non-flow limited breathing (control of breathing) (p<0.05). In contrast, free leptin had no effect. Lean mice did not present significant sleep disordered breathing and no differences were observed between groups.
Conclusion
We demonstrated that exosomes overcome the BBB and that leptin-loaded exosomes treat OSA and OHS in DIO mice.
Support (if any)
R01HL 128970, R01HL 138932, R61 HL156240, U18 DA052301, FAPESP 2018/08758-3
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Ducoli L, Agrawal S, Sibler E, Kouno T, Tacconi C, Hon C, Berger S, Müllhaupt D, He Y, Kim J, D’Addio M, Dieterich L, Carninci P, de Hoon M, Shin J, Detmar M. 152 LETR1 is a lymphatic endothelial-specific lncRNA governing cell proliferation and migration through KLF4 and SEMA3C. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.172] [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: 11/17/2022]
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Zehetner V, Lipnik K, Url A, de Heus P, Fröhlich W, Cavalleri JMV, Berger S. Pulmonary fibrosis in a donkey. PFERDEHEILKUNDE 2021. [DOI: 10.21836/pem20210505] [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: 11/27/2022]
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Scabia G, Cancello R, Dallanoce C, Berger S, Matera C, Dattilo A, Zulian A, Barone I, Ceccarini G, Santini F, De Amici M, Di Blasio AM, Maffei M. ICH3, a selective alpha7 nicotinic acetylcholine receptor agonist, modulates adipocyte inflammation associated with obesity. J Endocrinol Invest 2020; 43:983-993. [PMID: 31965518 DOI: 10.1007/s40618-020-01182-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 01/08/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE The alpha7 nicotinic acetylcholine receptor (α7nAChR), involved in the modulation of inflammation and insulin sensitivity, is downregulated in white adipose tissue (WAT) of obese patients. This study aims to test the ability of a selective synthetic α7nAChR agonist, the spirocyclic Δ2-isoxazoline derivative (R)-(-)-ICH3 (ICH3), to counteract acute inflammation and obesity-associated modifications in WAT. METHODS We employed the LPS-septic shock murine model, human primary adipocytes and diet-induced obese (DIO) mice. Inflammatory factor expression was assessed by ELISA and quantitative real-time PCR. Flow cytometry was employed to define WAT inflammatory infiltrate. Insulin signaling was monitored by quantification of AKT phosphorylation. RESULTS In the septic shock model, ICH3 revealed antipyretic action and reduced the surge of circulating cytokines. In vitro, ICH3 stimulation (10 µM) preserved viability of human adipocytes, decreased IL-6 mRNA (P < 0.05) and blunted LPS-induced peak of TNFα (P < 0.05) and IL-6 (P < 0.01). Chronic administration of ICH3 to DIO mice was associated with lower numbers of CD8+ T cells (P < 0.05) and to changed WAT expression of inflammatory factors (Hp, P < 0.05; CD301/MGL1, P < 0.01; Arg-1, P < 0.05). As compared to untreated, ICH3 DIO mice exhibited improved insulin signaling in the skeletal muscle (P < 0.01) mirrored by an improved response to glucose load (ipGTT: P < 0.05 at 120 min). CONCLUSIONS We proved that ICH3 is an anti-inflammatory drug, able to reduce inflammatory cytokines in human adipocytes and to blunt the effects of obesity on WAT inflammatory profile, on glucose tolerance and on tissue insulin sensitivity.
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Affiliation(s)
- G Scabia
- CNR Institute of Clinical Physiology, Pisa, Italy
- Obesity and Lipodystrophy Center at Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
| | - R Cancello
- Laboratorio di Ricerche Sull'Obesità, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - C Dallanoce
- Department of Pharmaceuticals Sciences, University of Milano, Milan, Italy
| | - S Berger
- Obesity and Lipodystrophy Center at Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
- Dulbecco Telethon Institute, Pisa, Italy
| | - C Matera
- Department of Pharmaceuticals Sciences, University of Milano, Milan, Italy
| | - A Dattilo
- Obesity and Lipodystrophy Center at Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
- Life Science Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - A Zulian
- Laboratorio di Ricerche Sull'Obesità, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - I Barone
- Obesity and Lipodystrophy Center at Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
| | - G Ceccarini
- Obesity and Lipodystrophy Center at Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
| | - F Santini
- Obesity and Lipodystrophy Center at Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
| | - M De Amici
- Department of Pharmaceuticals Sciences, University of Milano, Milan, Italy
| | - A M Di Blasio
- Laboratorio di Ricerche di Biologia Molecolare, Istituto Auxologico Italiano, IRCCS, Milan, Italy.
| | - M Maffei
- CNR Institute of Clinical Physiology, Pisa, Italy.
- Obesity and Lipodystrophy Center at Endocrinology Unit, University Hospital of Pisa, Pisa, Italy.
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Pho H, Freire C, Kojima R, Berger S, Ramsey JD, Batrakova EV, Kabanov AV, Polotsky VY. Treatment of Sleep Disordered Breathing With Leptin Loaded Exosomes. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.05224] [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)
| | | | - Ryo Kojima
- University of North Carolina at Chapel Hill
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Kutschar P, Berger S, Brandauer A, Freywald N, Osterbrink J, Seidenspinner D, Gnass I. Nursing Education Intervention Effects on Pain Intensity of Nursing Home Residents with Different Levels of Cognitive Impairment: A Cluster-Randomized Controlled Trial. J Pain Res 2020; 13:633-648. [PMID: 32273749 PMCID: PMC7105359 DOI: 10.2147/jpr.s237056] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 03/07/2020] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Pain management in nursing homes is challenging and pain prevalence remains high. The objective of this study was to improve the pain situation of nursing home residents following a nursing-related educational intervention within a cluster-randomized controlled trial (2016-2018). PARTICIPANTS Clusters were nursing homes from one nursing home operator in Bavaria, Germany. Nursing home residents who were permanently registered in the facilities, at least 60 years of age, and who themselves or their legal guardians provided informed consent were included. INTERVENTION In addition to the implementation of pain nurses and pain care assistants, staff of the intervention group received an educational intervention in pain management, containing classroom (quality circles) and web-based training for nurses. METHODS Based on the Mini-Mental State Examination (MMSE), residents were either interviewed (MMSE 10-30) using self-report instruments or observed (MMSE 0-9) by proxy assessment. The primary outcome in residents able to self-report was maximum pain intensity according to Brief Pain Inventory (BPI); in those not able to self-report treatment-relevant pain above cut-off (≥2) on the Pain Assessment in Advanced Dementia (PAINAD). RESULTS Out of 20 randomly selected clusters, 9 nursing homes from the control, and 6 nursing homes from the intervention group participated. Multilevel linear (n=347 residents, MMSE 10-30) and logistic regression (n=222 residents, MMSE 0-9) analyses were conducted. Maximum pain intensity was higher after intervention (B=1.32, p<0.01), decreased with a better quality of life (B=-0.07, p<0.001), and was lower when dementia diagnoses were present (B=-1.12, p<0.01). PAINAD scores before and after intervention did not differ significantly (OR=0.89, p=0.724), but chances to exhibit treatment-related pain were higher with decreasing MMSE (OR=0.94, p<0.05). CONCLUSION While no significant positive intervention effect was measured, findings suggest nurses' raised awareness towards pain management. Overall results indicate that large-scale educational interventions seem to be less effective in complex nursing home settings without also including specific individual-based intervention measures.
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Affiliation(s)
- P Kutschar
- Institute of Nursing Science and Practice, Paracelsus Medical University, Salzburg, Austria
| | - S Berger
- Institute of Nursing Science and Practice, Paracelsus Medical University, Salzburg, Austria
| | - A Brandauer
- Institute of Nursing Science and Practice, Paracelsus Medical University, Salzburg, Austria
| | - N Freywald
- Institute of Nursing Science and Practice, Paracelsus Medical University, Salzburg, Austria
| | - J Osterbrink
- Institute of Nursing Science and Practice, Paracelsus Medical University, Salzburg, Austria
- Brooks College of Health, University of North Florida, Jacksonville, FL, USA
| | - D Seidenspinner
- Nursing Science and Practice Development, University Hospital of Munich-Großhadern (LMU), Munich, Germany
| | - I Gnass
- Institute of Nursing Science and Practice, Paracelsus Medical University, Salzburg, Austria
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Berger S, Pho H, Fleury-Curado T, Bevans-Fonti S, Younas H, Shin MK, Jun JC, Anokye-Danso F, Ahima RS, Enquist LW, Mendelowitz D, Schwartz AR, Polotsky VY. Intranasal Leptin Relieves Sleep-disordered Breathing in Mice with Diet-induced Obesity. Am J Respir Crit Care Med 2020; 199:773-783. [PMID: 30309268 DOI: 10.1164/rccm.201805-0879oc] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [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: 01/01/2023] Open
Abstract
RATIONALE Leptin treats upper airway obstruction and alveolar hypoventilation in leptin-deficient ob/ob mice. However, obese humans and mice with diet-induced obesity (DIO) are resistant to leptin because of poor permeability of the blood-brain barrier. We propose that intranasal leptin will bypass leptin resistance and treat sleep-disordered breathing in obesity. OBJECTIVES To assess if intranasal leptin can treat obesity hypoventilation and upper airway obstruction during sleep in mice with DIO. METHODS Male C57BL/6J mice were fed with a high-fat diet for 16 weeks. A single dose of leptin (0.4 mg/kg) or BSA (vehicle) were administered intranasally or intraperitoneally, followed by either sleep studies (n = 10) or energy expenditure measurements (n = 10). A subset of mice was treated with leptin daily for 14 days for metabolic outcomes (n = 20). In a separate experiment, retrograde viral tracers were used to examine connections between leptin receptors and respiratory motoneurons. MEASUREMENTS AND MAIN RESULTS Acute intranasal, but not intraperitoneal, leptin decreased the number of oxygen desaturation events in REM sleep, and increased ventilation in non-REM and REM sleep, independently of metabolic effects. Chronic intranasal leptin decreased food intake and body weight, whereas intraperitoneal leptin had no effect. Intranasal leptin induced signal transducer and activator of transcription 3 phosphorylation in hypothalamic and medullary centers, whereas intraperitoneal leptin had no effect. Leptin receptor-positive cells were synaptically connected to respiratory motoneurons. CONCLUSIONS In mice with DIO, intranasal leptin bypassed leptin resistance and significantly attenuated sleep-disordered breathing independently of body weight.
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Affiliation(s)
- Slava Berger
- 1 Division of Pulmonary and Critical Care Medicine and
| | - Huy Pho
- 1 Division of Pulmonary and Critical Care Medicine and
| | | | | | - Haris Younas
- 1 Division of Pulmonary and Critical Care Medicine and
| | - Mi-Kyung Shin
- 1 Division of Pulmonary and Critical Care Medicine and
| | | | - Frederick Anokye-Danso
- 2 Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Rexford S Ahima
- 2 Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Lynn W Enquist
- 3 Department of Molecular Biology and.,4 Princeton Neuroscience Institute, Princeton University, Princeton, New Jersey; and
| | - David Mendelowitz
- 5 Department of Pharmacology and Physiology, George Washington University, Washington, DC
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Poitevin E, Nicolas M, Graveleau L, Richoz J, Andrey D, Monard F, Abrahamson A, Baillon A, Barrios J, Berger S, Berrocal R, Bos R, Brullebaut L, Caseiro C, Choo LF, Cole G, Daix G, Dekussche C, Dhillon GS, Fortineau A, Gaudin C, Gonzales MJ, Leal R, Mabiog RO, Noorlos T, Reba R, Senechal C. Improvement of AOAC Official Method 984.27 for the Determination of Nine Nutritional Elements in Food Products by Inductively Coupled Plasma-Atomic Emission Spectroscopy After Microwave Digestion: Single-Laboratory Validation and Ring Trial. J AOAC Int 2019. [DOI: 10.1093/jaoac/92.5.1484] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
A single-laboratory validation (SLV) and a ring trial (RT) were undertaken to determine nine nutritional elements in food products by inductively coupled plasma-atomic emission spectroscopy in order to improve and update AOAC Official Method 984.27. The improvements involved optimized microwave digestion, selected analytical lines, internal standardization, and ion buffering. Simultaneous determination of nine elements (calcium, copper, iron, potassium, magnesium, manganese, sodium, phosphorus, and zinc) was made in food products. Sample digestion was performed through wet digestion of food samples by microwave technology with either closed or open vessel systems. Validation was performed to characterize the method for selectivity, sensitivity, linearity, accuracy, precision, recovery, ruggedness, and uncertainty. The robustness and efficiency of this method was proved through a successful internal RT using experienced food industry laboratories. Performance characteristics are reported for 13 certified and in-house reference materials, populating the AOAC triangle food sectors, which fulfilled AOAC criteria and recommendations for accuracy (trueness, recovery, and z-scores) and precision (repeatability and reproducibility RSD and HorRat values) regarding SLV and RT. This multielemental method is cost-efficient, time-saving, accurate, and fit-for-purpose according to ISO 17025 Norm and AOAC acceptability criteria, and is proposed as an improved version of AOAC Official Method 984.27 for fortified food products, including infant formula.
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Affiliation(s)
- Eric Poitevin
- Nestlé Research Center, Vers-Chez-Les-Blanc, CH-1000 Lausanne 26, Switzerland
| | - Marine Nicolas
- Nestlé Research Center, Vers-Chez-Les-Blanc, CH-1000 Lausanne 26, Switzerland
| | - Laetitia Graveleau
- Nestlé Research Center, Vers-Chez-Les-Blanc, CH-1000 Lausanne 26, Switzerland
| | - Janique Richoz
- Nestlé Research Center, Vers-Chez-Les-Blanc, CH-1000 Lausanne 26, Switzerland
| | - Daniel Andrey
- Nestlé Research Center, Vers-Chez-Les-Blanc, CH-1000 Lausanne 26, Switzerland
| | - Florence Monard
- Nestlé Research Center, Vers-Chez-Les-Blanc, CH-1000 Lausanne 26, Switzerland
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18
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Krause A, Aries PM, Berger S, Fiehn C, Kellner H, Lorenz HM, Meier L, Müller GA, Müller-Ladner U, Schwarting A, Tony HP, Peters MA, Wendler J. Rituximab in routine care of severe active rheumatoid arthritis : A prospective, non-interventional study in Germany. Z Rheumatol 2019; 78:881-888. [PMID: 30276727 DOI: 10.1007/s00393-018-0552-0] [Citation(s) in RCA: 5] [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: 10/28/2022]
Abstract
OBJECTIVE To assess safety, effectiveness and onset of effect of rituximab (RTX) in routine clinical treatment of severe, active rheumatoid arthritis (RA). METHODS Prospective, multi-centre, non-interventional study in rheumatological outpatient clinics or private practices in Germany. RTX-naïve adult patients were to receive RTX according to marketing authorisation and at their physician's discretion. Also according to their physician's discretion, patients could receive a second cycle of RTX (re-treatment = treatment continuation). Major outcome was the change in Disease Activity Score based on 28-joints count and erythrocyte sedimentation rate (DAS28-ESR) over 24 weeks and during 6 months of re-treatment. RESULTS Overall, 1653 patients received at least one cycle RTX; 99.2% of these had received disease-modifying antirheumatic drugs (DMARD) pre-treatment and 75.5% anti-tumor necrosis factor(TNF)‑α pre-treatment. After a mean interval of 8.0 months, 820 patients received RTX re-treatment. Mean DAS28-ESR decreased from 5.3 at baseline to 3.8 after 24 weeks (-1.5 [95% confidence interval, CI: -1.6; -1.4]), and from 4.1 at start of cycle 2 to 3.5 at study end (change from baseline: -1.8 [95% CI: -2.0; -1.7]). Improvements in DAS28-ESR and Health Assessment Questionnaire (HAQ) score occurred mainly during the first 12 weeks of RTX treatment, with further DAS28-ESR improvement until week 24 or month 6 of re-treatment. Improvements in DAS28-ESR and EULAR responses were more pronounced in seropositive patients. RF was a predictor of DAS28-ESR change to study end. Safety analysis showed the established profile of RTX. CONCLUSION RTX was safe and effective in a real-life setting with rapid and sustained improvement in RA signs and symptoms.
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Affiliation(s)
- A Krause
- Abteilung Rheumatologie und Klinische Immunologie, Klinik für Innere Medizin, Immanuel Krankenhaus, Königstraße 63, 14109, Berlin, Germany.
| | - P M Aries
- Rheumatologie im Struenseehaus, Hamburg, Germany
| | - S Berger
- Private Practice, Naunhof, Germany
| | - C Fiehn
- Praxis für Rheumatologie und klinische Immunologie, Baden-Baden, Germany
| | - H Kellner
- Private Practice and Division of Rheumatology, KH Neuwittelsbach, Munich, Germany
| | - H-M Lorenz
- Division of Rheumatology, University Hospital Heidelberg, Heidelberg, Germany
| | - L Meier
- RheumaPraxis, Hofheim, Germany
| | - G A Müller
- Department of Nephrology and Rheumatology, University Hospital Göttingen, Göttingen, Germany
| | - U Müller-Ladner
- Department of Rheumatology and Clinical Immunology, Kerckhoff Hospital GmbH, Bad Nauheim, Germany
| | - A Schwarting
- First Department of Medicine, University Hospital, Johannes Gutenberg-University, Mainz, Germany
| | - H-P Tony
- Division of Clinical Immunology/Rheumatology, Department of Internal Medicine II, University of Würzburg, Würzburg, Germany
| | - M A Peters
- Medical Management Rheumatology, Roche Pharma AG, Grenzach-Wyhlen, Germany
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Affiliation(s)
| | - Slava Berger
- 1 Johns Hopkins University School of Medicine Baltimore, Maryland
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20
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Fleury Curado T, Pho H, Berger S, Caballero-Eraso C, Shin MK, Sennes LU, Pham L, Schwartz AR, Polotsky VY. Sleep-disordered breathing in C57BL/6J mice with diet-induced obesity. Sleep 2019; 41:4996050. [PMID: 29767787 DOI: 10.1093/sleep/zsy089] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Indexed: 01/19/2023] Open
Abstract
Obesity leads to sleep-disordered breathing (SDB) manifested by recurrent upper airway obstructions termed obstructive sleep apnea (OSA) and carbon dioxide retention due to hypoventilation. The objective of this work was to characterize breathing during sleep in C57BL6/J mice with diet-induced obesity (DIO). Arterial blood gas was measured in nine obese and nine lean mice during wakefulness. Nine male mice with DIO and six lean male C57BL/6J mice were head mounted with electroencephalogram (EEG) and electromyogram (EMG) electrodes. Sleep recordings were performed in the whole body plethysmography chamber; upper airway obstruction was characterized by the presence of inspiratory flow limitation in which airflow plateaus with increases in inspiratory effort. Obese mice showed significantly lower pH and higher partial pressure of arterial CO2 (PaCO2) in arterial blood gas compared to lean mice, 7.35 ± 0.04 versus 7.46 ± 0.06 (p < 0.001) and 38 ± 8 mm Hg versus 30 ± 5 mm Hg (p < 0.001). Obese mice had similar levels of minute ventilation to lean mice during sleep and wakefulness, despite higher body weight and temperature, indicating an increase in the metabolic rate and hypoventilation. Obese mice also showed baseline hypoxemia with decreased mean oxyhemoglobin saturation across sleep/wake states. Obese mice had a higher prevalence of flow-limited breathing compared to lean mice during sleep. However, the oxygen desaturation index in lean and obese mice did not differ. We conclude that DIO in mice leads to hypoventilation. Obesity also increases the frequency of inspiratory limited breaths, but it does not translate into progression of OSA.
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Affiliation(s)
- Thomaz Fleury Curado
- Division of Pulmonary and Critical Care Medicine, Department of Medicine Johns Hopkins University School of Medicine, Baltimore, MD.,Department of Otolaryngology, University of Sao Paulo, Sao Paulo, Brazil
| | - Huy Pho
- Division of Pulmonary and Critical Care Medicine, Department of Medicine Johns Hopkins University School of Medicine, Baltimore, MD
| | - Slava Berger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine Johns Hopkins University School of Medicine, Baltimore, MD
| | - Candela Caballero-Eraso
- Division of Pulmonary and Critical Care Medicine, Department of Medicine Johns Hopkins University School of Medicine, Baltimore, MD.,Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, Spain
| | - Mi-Kyung Shin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine Johns Hopkins University School of Medicine, Baltimore, MD
| | | | - Luu Pham
- Division of Pulmonary and Critical Care Medicine, Department of Medicine Johns Hopkins University School of Medicine, Baltimore, MD
| | - Alan R Schwartz
- Division of Pulmonary and Critical Care Medicine, Department of Medicine Johns Hopkins University School of Medicine, Baltimore, MD
| | - Vsevolod Y Polotsky
- Division of Pulmonary and Critical Care Medicine, Department of Medicine Johns Hopkins University School of Medicine, Baltimore, MD
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21
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Pho H, Berger S, Freire C, Dergacheva O, Curado TF, Schwartz AR, Mendelowitz D, Polotsky VY. 0002 Leptin Receptor Positive Neurons In The Dorsomedial Hypothalamus Maintain Upper Airway Patency During Sleep. Sleep 2019. [DOI: 10.1093/sleep/zsz067.001] [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: 11/13/2022] Open
Affiliation(s)
- Huy Pho
- Johns Hopkins, Baltimore, MD, USA
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22
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Freire C, Pho H, Berger S, Fleury-Curado T, Sennes LU, Schwartz AR, Polotsky VY. 0073 Activation of Leptin Receptor Positive Neurons in the Nucleus of The Solitary Tract (NTS) Alleviates Sleep Disordered Breathing in Obese Mice. Sleep 2019. [DOI: 10.1093/sleep/zsz067.072] [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: 11/13/2022] Open
Affiliation(s)
- Carla Freire
- Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
- University of São Paulo, São Paulo, Brazil
| | - Huy Pho
- Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Slava Berger
- Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Thomaz Fleury-Curado
- Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
- University of São Paulo, São Paulo, Brazil
| | | | - Alan R Schwartz
- Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Vsevolod Y Polotsky
- Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
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23
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Fenaux H, Chassaing M, Berger S, Gantzer C, Bertrand I, Schvoerer E. Transmission of hepatitis E virus by water: An issue still pending in industrialized countries. Water Res 2019; 151:144-157. [PMID: 30594083 DOI: 10.1016/j.watres.2018.12.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 12/05/2018] [Accepted: 12/07/2018] [Indexed: 06/09/2023]
Abstract
Hepatitis E virus (HEV) is an enteric virus divided into eight genotypes. Genotype 1 (G1) and G2 are specific to humans; G3, G4 and G7 are zoonotic genotypes infecting humans and animals. Transmission to humans through water has been demonstrated for G1 and G2, mainly in developing countries, but is only suspected for the zoonotic genotypes. Thus, the water-related HEV hazard may be due to human and animal faeces. The high HEV genetic variability allows considering the presence in wastewater of not only different genotypes, but also quasispecies adding even greater diversity. Moreover, recent studies have demonstrated that HEV particles may be either quasi-enveloped or non-enveloped, potentially implying differential viral behaviours in the environment. The presence of HEV has been demonstrated at the different stages of the water cycle all over the world, especially for HEV G3 in Europe and the USA. Concerning HEV survival in water, the virus does not have higher resistance to inactivating factors (heat, UV, chlorine, physical removal), compared to viral indicators (MS2 phage) or other highly resistant enteric viruses (Hepatitis A virus). But the studies did not take into account genetic (genogroups, quasispecies) or structural (quasi- or non-enveloped forms) HEV variability. Viral variability could indeed modify HEV persistence in water by influencing its interaction with the environment, its infectivity and its pathogenicity, and subsequently its transmission by water. The cell culture methods used to study HEV survival still have drawbacks (challenging virus cultivation, time consuming, lack of sensitivity). As explained in the present review, the issue of HEV transmission to humans through water is similar to that of other enteric viruses because of their similar or lower survival. HEV transmission to animals through water and how the virus variability affects its survival and transmission remain to be investigated.
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Affiliation(s)
- H Fenaux
- Laboratoire de Virologie, CHRU de Nancy Brabois, F-54511 Vandoeuvre lès Nancy, France; Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement, LCPME UMR 7564 CNRS-UL, F-54600 Villers lès Nancy, France
| | - M Chassaing
- Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement, LCPME UMR 7564 CNRS-UL, F-54600 Villers lès Nancy, France
| | - S Berger
- Laboratoire de Virologie, CHRU de Nancy Brabois, F-54511 Vandoeuvre lès Nancy, France
| | - C Gantzer
- Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement, LCPME UMR 7564 CNRS-UL, F-54600 Villers lès Nancy, France
| | - I Bertrand
- Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement, LCPME UMR 7564 CNRS-UL, F-54600 Villers lès Nancy, France
| | - E Schvoerer
- Laboratoire de Virologie, CHRU de Nancy Brabois, F-54511 Vandoeuvre lès Nancy, France; Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement, LCPME UMR 7564 CNRS-UL, F-54600 Villers lès Nancy, France.
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24
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Younas H, Vieira M, Gu C, Lee R, Shin MK, Berger S, Loube J, Nelson A, Bevans-Fonti S, Zhong Q, D'Alessio FR, McCormack MC, Hansel NN, Mitzner W, Polotsky VY. Caloric restriction prevents the development of airway hyperresponsiveness in mice on a high fat diet. Sci Rep 2019; 9:279. [PMID: 30670753 PMCID: PMC6342916 DOI: 10.1038/s41598-018-36651-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 11/22/2018] [Indexed: 12/20/2022] Open
Abstract
We have previously shown that high fat diet (HFD) for 2 weeks increases airway hyperresponsiveness (AHR) to methacholine challenge in C57BL/6J mice in association with an increase in IL-1β levels in lung tissue. We hypothesize that obesity increases AHR via the IL-1β mechanism, which can be prevented by caloric restriction and IL-1β blockade. In this study, we fed C57BL/6J mice for 8 weeks with several hypercaloric diets, including HFD, HFD supplemented with fructose, high trans-fat diet (HTFD) supplemented with fructose, either ad libitum or restricting their food intake to match body weight to the mice on a chow diet (CD). We also assessed the effect of the IL-1β receptor blocker anakinra. All mice showed the same total respiratory resistance at baseline. All obese mice showed higher AHR at 30 mg/ml of methacholine compared to CD and food restricted groups, regardless of the diet. Obese mice showed significant increases in lung IL-1 β mRNA expression, but not the protein, compared to CD and food restricted mice. Anakinra abolished an increase in AHR. We conclude that obesity leads to the airway hyperresponsiveness preventable by caloric restriction and IL-1β blockade.
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Affiliation(s)
- Haris Younas
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Marcela Vieira
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Chenjuan Gu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Rachel Lee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Mi-Kyung Shin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Slava Berger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jeff Loube
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Andrew Nelson
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Shannon Bevans-Fonti
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Qiong Zhong
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Franco R D'Alessio
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Meredith C McCormack
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Nadia N Hansel
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Wayne Mitzner
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Vsevolod Y Polotsky
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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25
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Caballero-Eraso C, Shin MK, Pho H, Kim LJ, Pichard LE, Wu ZJ, Gu C, Berger S, Pham L, Yeung HYB, Shirahata M, Schwartz AR, Tang WYW, Sham JSK, Polotsky VY. Leptin acts in the carotid bodies to increase minute ventilation during wakefulness and sleep and augment the hypoxic ventilatory response. J Physiol 2018; 597:151-172. [PMID: 30285278 DOI: 10.1113/jp276900] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [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: 07/27/2018] [Accepted: 10/03/2018] [Indexed: 01/10/2023] Open
Abstract
KEY POINTS Leptin is a potent respiratory stimulant. A long functional isoform of leptin receptor, LepRb , was detected in the carotid body (CB), a key peripheral hypoxia sensor. However, the effect of leptin on minute ventilation (VE ) and the hypoxic ventilatory response (HVR) has not been sufficiently studied. We report that LepRb is present in approximately 74% of the CB glomus cells. Leptin increased carotid sinus nerve activity at baseline and in response to hypoxia in vivo. Subcutaneous infusion of leptin increased VE and HVR in C57BL/6J mice and this effect was abolished by CB denervation. Expression of LepRb in the carotid bodies of LepRb deficient obese db/db mice increased VE during wakefulness and sleep and augmented the HVR. We conclude that leptin acts on LepRb in the CBs to stimulate breathing and HVR, which may protect against sleep disordered breathing in obesity. ABSTRACT Leptin is a potent respiratory stimulant. The carotid bodies (CB) express the long functional isoform of leptin receptor, LepRb , but the role of leptin in CB has not been fully elucidated. The objectives of the current study were (1) to examine the effect of subcutaneous leptin infusion on minute ventilation (VE ) and the hypoxic ventilatory response to 10% O2 (HVR) in C57BL/6J mice before and after CB denervation; (2) to express LepRb in CB of LepRb -deficient obese db/db mice and examine its effects on breathing during sleep and wakefulness and on HVR. We found that leptin enhanced carotid sinus nerve activity at baseline and in response to 10% O2 in vivo. In C57BL/6J mice, leptin increased VE from 1.1 to 1.5 mL/min/g during normoxia (P < 0.01) and from 3.6 to 4.7 mL/min/g during hypoxia (P < 0.001), augmenting HVR from 0.23 to 0.31 mL/min/g/Δ F I O 2 (P < 0.001). The effects of leptin on VE and HVR were abolished by CB denervation. In db/db mice, LepRb expression in CB increased VE from 1.1 to 1.3 mL/min/g during normoxia (P < 0.05) and from 2.8 to 3.2 mL/min/g during hypoxia (P < 0.02), increasing HVR. Compared to control db/db mice, LepRb transfected mice showed significantly higher VE throughout non-rapid eye movement (20.1 vs. -27.7 mL/min respectively, P < 0.05) and rapid eye movement sleep (16.5 vs 23.4 mL/min, P < 0.05). We conclude that leptin acts in CB to augment VE and HVR, which may protect against sleep disordered breathing in obesity.
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Affiliation(s)
- Candela Caballero-Eraso
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, Spain
| | - Mi-Kyung Shin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Huy Pho
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lenise J Kim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Luis E Pichard
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Zhi-Juan Wu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Chenjuan Gu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Slava Berger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Luu Pham
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Ho-Yee Bonnie Yeung
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Machiko Shirahata
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Alan R Schwartz
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Wan-Yee Winnie Tang
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - James S K Sham
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Vsevolod Y Polotsky
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Fleury Curado TA, Pho H, Dergacheva O, Berger S, Lee R, Freire C, Asherov A, Sennes LU, Mendelowitz D, Schwartz AR, Polotsky VY. Silencing of Hypoglossal Motoneurons Leads to Sleep Disordered Breathing in Lean Mice. Front Neurol 2018; 9:962. [PMID: 30487776 PMCID: PMC6246694 DOI: 10.3389/fneur.2018.00962] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/25/2018] [Indexed: 12/15/2022] Open
Abstract
Obstructive Sleep Apnea (OSA) is a prevalent condition and a major cause of morbidity and mortality in Western Society. The loss of motor input to the tongue and specifically to the genioglossus muscle during sleep is associated with pharyngeal collapsibility and the development of OSA. We applied a novel chemogenetic method to develop a mouse model of sleep disordered breathing Our goal was to reversibly silence neuromotor input to the genioglossal muscle using an adeno-associated viral vector carrying inhibitory designer receptors exclusively activated by designer drugs AAV5-hM4Di-mCherry (DREADD), which was delivered bilaterally to the hypoglossal nucleus in fifteen C57BL/6J mice. In the in vivo experiment, 4 weeks after the viral administration mice were injected with a DREADD ligand clozapine-N-oxide (CNO, i.p., 1mg/kg) or saline followed by a sleep study; a week later treatments were alternated and a second sleep study was performed. Inspiratory flow limitation was recognized by the presence of a plateau in mid-respiratory flow; oxyhemoglobin desaturations were defined as desaturations >4% from baseline. In the in vitro electrophysiology experiment, four males and three females of 5 days of age were used. Sixteen-nineteen days after DREADD injection brain slices of medulla were prepared and individual hypoglossal motoneurons were recorded before and after CNO application. Positive mCherry staining was detected in the hypoglossal nucleus in all mice confirming successful targeting. In sleep studies, CNO markedly increased the frequency of flow limitation n NREM sleep (from 1.9 ± 1.3% after vehicle injection to 14.2 ± 3.4% after CNO, p < 0.05) and REM sleep (from 22.3% ± 4.1% to 30.9 ± 4.6%, respectively, p < 0.05) compared to saline treatment, but there was no significant oxyhemoglobin desaturation or sleep fragmentation. Electrophysiology recording in brain slices showed that CNO inhibited firing frequency of DREADD-containing hypoglossal motoneurons. We conclude that chemogenetic approach allows to silence hypoglossal motoneurons in mice, which leads to sleep disordered breathing manifested by inspiratory flow limitation during NREM and REM sleep without oxyhemoglobin desaturation or sleep fragmentation. Other co-morbid factors, such as compromised upper airway anatomy, may be needed to achieve recurrent pharyngeal obstruction observed in OSA.
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Affiliation(s)
- Thomaz A Fleury Curado
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States.,Department of Otolaryngology, University of Sao Paulo, São Paulo, Brazil
| | - Huy Pho
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Olga Dergacheva
- Department of Pharmacology and Physiology, The George Washington University, Washington, DC, United States
| | - Slava Berger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Rachel Lee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Carla Freire
- Department of Otolaryngology, University of Sao Paulo, São Paulo, Brazil
| | - Aya Asherov
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Luis U Sennes
- Department of Otolaryngology, University of Sao Paulo, São Paulo, Brazil
| | - David Mendelowitz
- Department of Pharmacology and Physiology, The George Washington University, Washington, DC, United States
| | - Alan R Schwartz
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Vsevolod Y Polotsky
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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Hagelskamp L, Berger S, Villalobos M, Thomas M, Wensing M, Mahler C. Nurse navigators in thoracic oncology: A qualitative study of German nurses’ attitudes to nursing role expansion. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy276.003] [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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Meyre P, Blum S, Berger S, Aeschbacher S, Schoepfer H, Briel M, Niessner A, Osswald S, Conen D. P975Incidence and risk factors for all-cause hospitalizations in patients with atrial fibrillation: a systematic review and meta-analysis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p975] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- P Meyre
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - S Blum
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - S Berger
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - S Aeschbacher
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - H Schoepfer
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - M Briel
- University Hospital Basel, Basel Institute for Clinical Epidemiology and Biostatistics, Department of Clinical Research, Basel, Switzerland
| | - A Niessner
- Medical University of Vienna, Division of Cardiology, Department of Internal Medicine II, Vienna, Austria
| | - S Osswald
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - D Conen
- McMaster University, Population Health Research Institute, Hamilton, Canada
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Holingue C, Wennberg A, Berger S, Polotsky VY, Spira AP. Disturbed sleep and diabetes: A potential nexus of dementia risk. Metabolism 2018; 84:85-93. [PMID: 29409842 PMCID: PMC5995651 DOI: 10.1016/j.metabol.2018.01.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 01/19/2018] [Accepted: 01/26/2018] [Indexed: 12/28/2022]
Abstract
Type 2 diabetes (T2D) and sleep disturbance (e.g., insomnia, sleep-disordered breathing) are prevalent conditions among older adults that are associated with cognitive decline and dementia, including Alzheimer's disease (AD). Importantly, disturbed sleep is associated with alterations in insulin sensitivity and glucose metabolism, and may increase the risk of T2D, and T2D-related complications (e.g., pain, nocturia) can negatively affect sleep. Despite these associations, little is known about how interactions between T2D and sleep disturbance might alter cognitive trajectories or the pathological changes that underlie dementia. Here, we review links among T2D, sleep disturbance, cognitive decline and dementia-including preclinical and clinical AD-and identify gaps in the literature, that if addressed, could have significant implications for the prevention of poor cognitive outcomes.
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Affiliation(s)
- Calliope Holingue
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, United States.
| | - Alexandra Wennberg
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, United States.
| | - Slava Berger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, United States.
| | - Vsevolod Y Polotsky
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, United States.
| | - Adam P Spira
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, United States; Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, United States; Johns Hopkins Center on Aging and Health, United States.
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Fenaux H, Chassaing M, Berger S, Jeulin H, Gentilhomme A, Bensenane M, Bronowicki J, Gantzer C, Bertrand I, Schvoerer E. Molecular features of Hepatitis E Virus circulation in environmental and human samples. J Clin Virol 2018; 103:63-70. [DOI: 10.1016/j.jcv.2018.04.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 03/20/2018] [Accepted: 04/03/2018] [Indexed: 12/20/2022]
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Berger S, Pho H, Fleury Curado T, Schwartz A, Polotsky V. 0077 Intranasal Leptin Approach To Treat Sleep-disordered Breathing. Sleep 2018. [DOI: 10.1093/sleep/zsy061.076] [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: 11/13/2022] Open
Affiliation(s)
- S Berger
- Division of Pulmonary and Critical Care Medicine Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD
| | - H Pho
- Division of Pulmonary and Critical Care Medicine Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD
| | - T Fleury Curado
- Division of Pulmonary and Critical Care Medicine Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD
| | - A Schwartz
- Division of Pulmonary and Critical Care Medicine Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD
| | - V Polotsky
- Division of Pulmonary and Critical Care Medicine Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD
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PHO H, Berger S, Fleury Curado T, Schwartz AR, Polotsky VY. 0133 Leptin Signaling In Dorsal Medial Hypothalamus Regulates Upper Airway Patency And Reverses Sleep Disordered Breathing In Leptin-resistant Db/db Mice. Sleep 2018. [DOI: 10.1093/sleep/zsy061.132] [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: 11/15/2022] Open
Affiliation(s)
- H PHO
- Johns Hopkins, Baltimore, MD
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Fleury Curado TA, Pho H, Berger S, Lee R, Sennes L, Schwartz AR, Polotsky VY. 0067 Chemogenetic Silencing of Hypoglossal Motor Neurons Creates a Model of Upper Airway Obstruction During Sleep. Sleep 2018. [DOI: 10.1093/sleep/zsy061.066] [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: 11/12/2022] Open
Affiliation(s)
- T A Fleury Curado
- The Johns Hopkins Asthma and Allergy Center, Baltimore, MD, United States, Baltimore, MD
| | - H Pho
- The Johns Hopkins Asthma and Allergy Center, Baltimore, MD, United States, Baltimore, MD
| | - S Berger
- The Johns Hopkins Asthma and Allergy Center, Baltimore, MD, United States, Baltimore, MD
| | - R Lee
- The Johns Hopkins Asthma and Allergy Center, Baltimore, MD, United States, Baltimore, MD
| | - L Sennes
- Otolaryngology Department, University of Sao Paulo, Sao Paulo, Brazil, Sao Paulo, BRAZIL
| | - A R Schwartz
- The Johns Hopkins Asthma and Allergy Center, Baltimore, MD, United States, Baltimore, MD
| | - V Y Polotsky
- The Johns Hopkins Asthma and Allergy Center, Baltimore, MD, United States, Baltimore, MD
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Berger S, Gökeri C, Dietert K, Behrendt U, Lienau J, Gruber AD, Suttorp N, Witzenrath M, Nouailles G. Delay in Adequate Antiobiotic Therapy Results in Fatal Disease Outcome in a Mouse Model of CAP. Pneumologie 2018. [DOI: 10.1055/s-0037-1619425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- S Berger
- Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine
| | - C Gökeri
- Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine
| | - K Dietert
- Department of Veterinary Pathology, Freie Universität Berlin
| | - U Behrendt
- Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine
| | - J Lienau
- Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine
| | - AD Gruber
- Department of Veterinary Pathology, Freie Universität Berlin
| | - N Suttorp
- Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine
| | - M Witzenrath
- Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine
| | - G Nouailles
- Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine
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Soulie C, Morand-Joubert L, Cottalorda J, Charpentier C, Bellecave P, Le Guen L, Yerly S, Montes B, Fafi-Kremer S, Dina J, Avettand-Fenoel V, Amiel C, Roussel C, Pallier C, Zafilaza K, Sayon S, Signori-Schmuck A, Mirand A, Trabaud MA, Berger S, Calvez V, Marcelin AG. Performance of genotypic algorithms for predicting tropism for HIV-1 CRF01_AE recombinant. J Clin Virol 2018; 99-100:57-60. [PMID: 29331843 DOI: 10.1016/j.jcv.2017.12.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 09/21/2017] [Revised: 10/04/2017] [Accepted: 12/28/2017] [Indexed: 11/19/2022]
Abstract
OBJECTIVES There is no consensus about the performances of genotypic rules for predicting HIV-1 non-B subtype tropism. Three genotypic methods were compared for CRF01_AE HIV-1 tropism determination. METHODS The V3 env region of 207 HIV-1 CRF01_AE and 178 B subtypes from 17 centers in France and 1 center in Switzerland was sequenced. Tropism was determined by Geno2Pheno algorithm with false positive rate (FPR) 5% or 10%, the 11/25 rule or the combined criteria of the 11/25, net charge rule and NXT/S mutations. RESULTS Overall, 72.5%, 59.4%, 86.0%, 90.8% of the 207 HIV-1 CRF01_AE were R5-tropic viruses determined by Geno2pheno FPR5%, Geno2pheno FPR10%, the combined criteria and the 11/25 rule, respectively. A concordance of 82.6% was observed between Geno2pheno FPR5% and the combined criteria for CRF01_AE. The results were nearly similar for the comparison between Geno2pheno FPR5% and the 11/25 rule. More mismatches were observed when Geno2pheno was used with the FPR10%. Neither HIV viral load, nor current or nadir CD4 was associated with the discordance rate between the different algorithms. CONCLUSION Geno2pheno predicted more X4-tropic viruses for this set of CRF01_AE sequences than the combined criteria or the 11/25 rule alone. For a conservative approach, Geno2pheno FPR5% seems to be a good compromise to predict CRF01_AE tropism.
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Affiliation(s)
- C Soulie
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Institut Pierre Louis d'épidémiologie et de Santé Publique (IPLESP UMRS 1136), Paris, France; AP-HP, Hôpital Pitié-Salpêtrière, Service de Virologie, Paris, France.
| | - L Morand-Joubert
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Institut Pierre Louis d'épidémiologie et de Santé Publique (IPLESP UMRS 1136), Paris, France; AP-HP, Hôpital Saint Antoine, Service de Virologie, Paris, France
| | | | - C Charpentier
- IAME, UMR 1137-Université Paris Diderot, Sorbonne Paris Cité, INSERM, AP-HP, Hôpital Bichat, Laboratoire de Virologie, Paris, France
| | - P Bellecave
- CHU de Bordeaux, Laboratoire de Virologie, Univ. Bordeaux, CNRS UMR 5234, Bordeaux, France
| | - L Le Guen
- Laboratoire de virologie, CHU, Nantes, France
| | - S Yerly
- Laboratory of Virology, Geneva University Hospitals, Switzerland
| | - B Montes
- Laboratoire de Virologie, CHU, Montpellier, France
| | | | - J Dina
- Laboratoire de virologie, CHU, Caen, France
| | - V Avettand-Fenoel
- AP-HP, Laboratoire de Virologie, Hôpital Necker, Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, EA7327, France
| | - C Amiel
- AP-HP, Laboratoire de Virologie, Hôpital Tenon, Paris, France
| | | | | | - K Zafilaza
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Institut Pierre Louis d'épidémiologie et de Santé Publique (IPLESP UMRS 1136), Paris, France; AP-HP, Hôpital Pitié-Salpêtrière, Service de Virologie, Paris, France
| | - S Sayon
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Institut Pierre Louis d'épidémiologie et de Santé Publique (IPLESP UMRS 1136), Paris, France; AP-HP, Hôpital Pitié-Salpêtrière, Service de Virologie, Paris, France
| | | | | | - M A Trabaud
- Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - S Berger
- Laboratoire de Virologie, CHU de Nancy Brabois, EA 7300, Université de Lorraine, Faculté de Médecine, Vandoeuvre les Nancy, France
| | - V Calvez
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Institut Pierre Louis d'épidémiologie et de Santé Publique (IPLESP UMRS 1136), Paris, France; AP-HP, Hôpital Pitié-Salpêtrière, Service de Virologie, Paris, France
| | - A G Marcelin
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Institut Pierre Louis d'épidémiologie et de Santé Publique (IPLESP UMRS 1136), Paris, France; AP-HP, Hôpital Pitié-Salpêtrière, Service de Virologie, Paris, France
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Scartabelli G, Querci G, Marconi L, Ceccarini G, Piaggi P, Fierabracci P, Salvetti G, Cizza G, Mazzeo S, Vitti J, Berger S, Palla A, Santini F. Liver Enlargement Predicts Obstructive Sleep Apnea-Hypopnea Syndrome in Morbidly Obese Women. Front Endocrinol (Lausanne) 2018; 9:293. [PMID: 29928260 PMCID: PMC5998798 DOI: 10.3389/fendo.2018.00293] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/17/2018] [Indexed: 11/25/2022] Open
Abstract
Obstructive sleep apnea-hypopnea syndrome (OSAHS) is frequently present in patients with severe obesity, but its prevalence especially in women is not well defined. OSAHS and non-alcoholic fatty liver disease are common conditions, frequently associated in patients with central obesity and metabolic syndrome and are both the result of the accumulation of ectopic fat mass. Identifying predictors of risk of OSAHS may be useful to select the subjects requiring instrumental sleep evaluation. In this cross-sectional study, we have investigated the potential role of hepatic left lobe volume (HLLV) in predicting the presence of OSAHS. OSAHS was quantified by the apnea/hypopnea index (AHI) and oxygen desaturation index in a cardiorespiratory inpatient sleep study of 97 obese women [age: 47 ± 11 years body mass index (BMI): 50 ± 8 kg/m2]. OSAHS was diagnosed when AHI was ≥5. HLLV, subcutaneous and intra-abdominal fat were measured by ultrasound. After adjustment for age and BMI, both HLLV and neck circumference (NC) were independent predictors of AHI. OSAHS was found in 72% of patients; HLLV ≥ 370 cm3 was a predictor of OSAHS with a sensitivity of 66%, a specificity of 70%, a positive and negative predictive values of 85 and 44%, respectively (AUC = 0.67, p < 0.005). A multivariate logistic model was used including age, BMI, NC, and HLLV (the only independent predictors of AHI in a multiple linear regression analyses), and a cut off value for the predicted probability of OSAHS equal to 0.7 provided the best diagnostic results (AUC = 0.79, p < 0.005) in terms of sensitivity (76%), specificity (89%), negative and positive predictive values (59 and 95%, respectively). All patients with severe OSAHS were identified by this prediction model. In conclusion, HLLV, an established index of visceral adiposity, represents an anthropometric parameter closely associated with OSAHS in severely obese women.
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Affiliation(s)
| | - Giorgia Querci
- Obesity Center, Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
| | | | - Giovanni Ceccarini
- Obesity Center, Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
| | - Paolo Piaggi
- Obesity Center, Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, United States
| | - Paola Fierabracci
- Obesity Center, Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
| | - Guido Salvetti
- Obesity Center, Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
| | - Giovanni Cizza
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health, Bethesda, MD, United States
| | - Salvatore Mazzeo
- Department of Radiology, University of Hospital of Pisa, Pisa, Italy
| | - Jacopo Vitti
- Obesity Center, Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
| | - Slava Berger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Antonio Palla
- Pulmonary Unit, University of Hospital of Pisa, Pisa, Italy
| | - Ferruccio Santini
- Obesity Center, Endocrinology Unit, University Hospital of Pisa, Pisa, Italy
- *Correspondence: Ferruccio Santini,
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Leutgeb R, Engeser P, Berger S, Szecsenyi J, Laux G. Erratum to: Out of hours care in Germany - High utilization by adult patients with minor ailments? BMC Fam Pract 2017; 18:64. [PMID: 28499356 PMCID: PMC5429518 DOI: 10.1186/s12875-017-0632-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Drews R, Pattyn F, Hewitt IJ, Ng FSL, Berger S, Matsuoka K, Helm V, Bergeot N, Favier L, Neckel N. Actively evolving subglacial conduits and eskers initiate ice shelf channels at an Antarctic grounding line. Nat Commun 2017; 8:15228. [PMID: 28485400 PMCID: PMC5482720 DOI: 10.1038/ncomms15228] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 10/10/2016] [Accepted: 03/09/2017] [Indexed: 11/08/2022] Open
Abstract
Ice-shelf channels are long curvilinear tracts of thin ice found on Antarctic ice shelves. Many of them originate near the grounding line, but their formation mechanisms remain poorly understood. Here we use ice-penetrating radar data from Roi Baudouin Ice Shelf, East Antarctica, to infer that the morphology of several ice-shelf channels is seeded upstream of the grounding line by large basal obstacles indenting the ice from below. We interpret each obstacle as an esker ridge formed from sediments deposited by subglacial water conduits, and calculate that the eskers' size grows towards the grounding line where deposition rates are maximum. Relict features on the shelf indicate that these linked systems of subglacial conduits and ice-shelf channels have been changing over the past few centuries. Because ice-shelf channels are loci where intense melting occurs to thin an ice shelf, these findings expose a novel link between subglacial drainage, sedimentation and ice-shelf stability.
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Affiliation(s)
- R. Drews
- Université libre de Bruxelles, Laboratoire de Glaciologie, Avenue F.D. Roosevelt 50, Brussels 1050, Belgium
- Bavarian Academy of Sciences and Humanities, Glaziologie, Alfons-Goppel-Str. 11, Munich 80539, Germany
| | - F. Pattyn
- Université libre de Bruxelles, Laboratoire de Glaciologie, Avenue F.D. Roosevelt 50, Brussels 1050, Belgium
| | - I. J. Hewitt
- University of Oxford, Mathematical Institute, Woodstock Road, Oxford OX26GG, UK
| | - F. S. L. Ng
- The University of Sheffield, Department of Geography, Winter street, Sheffield S102TN, UK
| | - S. Berger
- Université libre de Bruxelles, Laboratoire de Glaciologie, Avenue F.D. Roosevelt 50, Brussels 1050, Belgium
| | - K. Matsuoka
- Norwegian Polar Institute, Fram Centre 9296 Tromsø, Norway
| | - V. Helm
- Alfred Wegener Institute, Am Alten Hafen 26, Bremerhaven 27568, Germany
| | - N. Bergeot
- Royal Observatory of Belgium, Av. Circulaire 3, Brussels 1180, Belgium
| | - L. Favier
- Université libre de Bruxelles, Laboratoire de Glaciologie, Avenue F.D. Roosevelt 50, Brussels 1050, Belgium
| | - N. Neckel
- Alfred Wegener Institute, Am Alten Hafen 26, Bremerhaven 27568, Germany
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Bemelman FJ, de Fijter JW, Kers J, Meyer C, Peters-Sengers H, de Maar EF, van der Pant KAMI, de Vries APJ, Sanders JS, Zwinderman A, Idu MM, Berger S, Reinders MEJ, Krikke C, Bajema IM, van Dijk MC, Ten Berge IJM, Ringers J, Lardy J, Roelen D, Moes DJ, Florquin S, Homan van der Heide JJ. Early Conversion to Prednisolone/Everolimus as an Alternative Weaning Regimen Associates With Beneficial Renal Transplant Histology and Function: The Randomized-Controlled MECANO Trial. Am J Transplant 2017; 17:1020-1030. [PMID: 27639190 DOI: 10.1111/ajt.14048] [Citation(s) in RCA: 26] [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: 03/01/2016] [Revised: 08/20/2016] [Accepted: 09/07/2016] [Indexed: 01/25/2023]
Abstract
In renal transplantation, use of calcineurin inhibitors (CNIs) is associated with nephrotoxicity and immunosuppression with malignancies and infections. This trial aimed to minimize CNI exposure and total immunosuppression while maintaining efficacy. We performed a randomized controlled, open-label multicenter trial with early cyclosporine A (CsA) elimination. Patients started with basiliximab, prednisolone (P), mycophenolate sodium (MPS), and CsA. At 6 months, immunosuppression was tapered to P/CsA, P/MPS, or P/everolimus (EVL). Primary outcomes were renal fibrosis and inflammation. Secondary outcomes were estimated glomerular filtration rate (eGFR) and incidence of rejection at 24 months. The P/MPS arm was prematurely halted. The trial continued with P/CsA (N = 89) and P/EVL (N = 96). Interstitial fibrosis and inflammation were significantly decreased and the eGFR was significantly higher in the P/EVL arm. Cumulative rejection rates were 13% (P/EVL) and 19% (P/CsA), (p = 0.08). A post hoc analysis of HLA and donor-specific antibodies at 1 year after transplantation revealed no differences. An individualized immunosuppressive strategy of early CNI elimination to dual therapy with everolimus was associated with decreased allograft fibrosis, preserved allograft function, and good efficacy, but also with more serious adverse events and discontinuation. This can be a valuable alternative regimen in patients suffering from CNI toxicity.
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Affiliation(s)
- F J Bemelman
- Renal Transplant Unit, Amsterdam, the Netherlands
| | - J W de Fijter
- Renal Transplant Unit, Department of Nephrology, Leiden University Medical Centre, Leiden, the Netherlands
| | - J Kers
- Department of Pathology, Academic Medical Centre, Amsterdam, the Netherlands
| | - C Meyer
- University of Amsterdam, Amsterdam, the Netherlands
| | | | - E F de Maar
- Department of Nephrology, Groningen University Hospital, Groningen, the Netherlands
| | | | - A P J de Vries
- Renal Transplant Unit, Department of Nephrology, Leiden University Medical Centre, Leiden, the Netherlands
| | - J-S Sanders
- Department of Nephrology, Groningen University Hospital, Groningen, the Netherlands
| | - A Zwinderman
- Department of Epidemiology and Biostatistics, Academic Medical Centre, Amsterdam, the Netherlands
| | - M M Idu
- Department of Surgery, Academic Medical Centre, Amsterdam, the Netherlands
| | - S Berger
- Department of Nephrology, Groningen University Hospital, Groningen, the Netherlands
| | - M E J Reinders
- Renal Transplant Unit, Department of Nephrology, Leiden University Medical Centre, Leiden, the Netherlands
| | - C Krikke
- Department of Surgery, Groningen University Hospital, Groningen, the Netherlands
| | - I M Bajema
- Department of Pathology, Leiden University Medical Centre, Leiden, the Netherlands
| | - M C van Dijk
- Department of Pathology, Groningen University Hospital, Groningen, the Netherlands
| | | | - J Ringers
- Department of Surgery, Leiden University Medical Centre, Leiden, the Netherlands
| | - J Lardy
- Sanquin Diagnostic Services, Amsterdam, the Netherlands
| | - D Roelen
- Department of Immunogenetics and Transplantation Immunology, Leiden University Medical Centre, Leiden, the Netherlands
| | - D-J Moes
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Centre, Leiden, the Netherlands
| | - S Florquin
- Department of Pathology, Academic Medical Centre, Amsterdam, the Netherlands
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Gökeri C, Berger S, Behrendt U, Wienhold SM, Dorhoi A, Suttorp N, Witzenrath M, Nouailles-Kursar G. Regulators of Neutrophilic Inflammation in Community Acquired Pneumonia. Pneumologie 2017. [DOI: 10.1055/s-0037-1598365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- C Gökeri
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - S Berger
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - U Behrendt
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - SM Wienhold
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - A Dorhoi
- Department of Immunology, Max Planck Institute for Infection Biology, Berlin
| | - N Suttorp
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - M Witzenrath
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - G Nouailles-Kursar
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
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Berger S, Gökeri C, Behrendt U, Wienhold SM, Lienau J, Suttorp N, Nouailles-Kursar G, Witzenrath M. In vivo Analysis of Murine Pneumococcal Pneumonia for Mathematical Modelling of Community Aquired Pneumonia. Pneumologie 2017. [DOI: 10.1055/s-0037-1598367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- S Berger
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - C Gökeri
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - U Behrendt
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - SM Wienhold
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - J Lienau
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - N Suttorp
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - G Nouailles-Kursar
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - M Witzenrath
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
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Berger S, Wienhold SM, Gökeri C, Behrendt U, Fatykhova D, Zscheppang K, Berg J, Gisch N, Dietert K, Doehn JM, Hocke A, Witzenrath M, Nouailles-Kursar G. Spatial and temporal regulation of neutrophil-attractant CXCL5/LIX in acute streptococcal pneumonia. Pneumologie 2017. [DOI: 10.1055/s-0037-1598372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- S Berger
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - SM Wienhold
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - C Gökeri
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - U Behrendt
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - D Fatykhova
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - K Zscheppang
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - J Berg
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - N Gisch
- Leibniz Center for Medicine and Biosciences, Research Center Borstel
| | - K Dietert
- Institute of Veterinary Pathology, Freie Universität Berlin
| | - JM Doehn
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - A Hocke
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - M Witzenrath
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
| | - G Nouailles-Kursar
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin
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Hinner M, Bel Aiba R, Schlosser C, Jaquin T, Allersdorfer A, Berger S, Wiedenmann A, Matschiner G, Schüler J, Moebius U, Rothe C, Olwill S. Costimulatory T-cell engagement by PRS-343, a CD137 (4-1BB)/HER2 bispecific, leads to tumor growth inhibition and TIL expansion in a humanized mouse model. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32894-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Efimov S, Khodov I, Ratkova E, Kiselev M, Berger S, Klochkov V. Detailed NOESY/T-ROESY analysis as an effective method for eliminating spin diffusion from 2D NOE spectra of small flexible molecules. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.09.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Dyugovskaya L, Berger S, Polyakov A, Lavie P, Lavie L. Intermittent Hypoxia Affects the Spontaneous Differentiation In Vitro of Human Neutrophils into Long-Lived Giant Phagocytes. Oxid Med Cell Longev 2015; 2016:9636937. [PMID: 26635914 PMCID: PMC4655297 DOI: 10.1155/2016/9636937] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 07/01/2015] [Indexed: 11/17/2022]
Abstract
Previously we identified, for the first time, a new small-size subset of neutrophil-derived giant phagocytes (Gϕ) which spontaneously develop in vitro without additional growth factors or cytokines. Gϕ are CD66b(+)/CD63(+)/MPO(+)/LC3B(+) and are characterized by extended lifespan, large phagolysosomes, active phagocytosis, and reactive oxygen species (ROS) production, and autophagy largely controls their formation. Hypoxia, and particularly hypoxia/reoxygenation, is a prominent feature of many pathological processes. Herein we investigated Gϕ formation by applying various hypoxic conditions. Chronic intermittent hypoxia (IH) (29 cycles/day for 5 days) completely abolished Gϕ formation, while acute IH had dose-dependent effects. Exposure to 24 h (56 IH cycles) decreased their size, yield, phagocytic ability, autophagy, mitophagy, and gp91-phox/p22-phox expression, whereas under 24 h sustained hypoxia (SH) the size and expression of LC3B and gp91-phox/p22-phox resembled Gϕ formed in normoxia. Diphenyl iodide (DPI), a NADPH oxidase inhibitor, as well as the PI3K/Akt and autophagy inhibitor LY294002 abolished Gϕ formation at all oxygen conditions. However, the potent antioxidant, N-acetylcysteine (NAC) abrogated the effects of IH by inducing large CD66b(+)/LC3B(+) Gϕ and increased both NADPH oxidase expression and phagocytosis. These findings suggest that NADPH oxidase, autophagy, and the PI3K/Akt pathway are involved in Gϕ development.
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Affiliation(s)
- Larissa Dyugovskaya
- The Lloyd Rigler Sleep Apnea Research Laboratory, Unit of Anatomy and Cell Biology, The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, 31096 Haifa, Israel
| | - Slava Berger
- The Lloyd Rigler Sleep Apnea Research Laboratory, Unit of Anatomy and Cell Biology, The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, 31096 Haifa, Israel
| | - Andrey Polyakov
- The Lloyd Rigler Sleep Apnea Research Laboratory, Unit of Anatomy and Cell Biology, The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, 31096 Haifa, Israel
| | - Peretz Lavie
- The Lloyd Rigler Sleep Apnea Research Laboratory, Unit of Anatomy and Cell Biology, The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, 31096 Haifa, Israel
| | - Lena Lavie
- The Lloyd Rigler Sleep Apnea Research Laboratory, Unit of Anatomy and Cell Biology, The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, 31096 Haifa, Israel
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Misof B, Liu S, Meusemann K, Peters RS, Donath A, Mayer C, Frandsen PB, Ware J, Flouri T, Beutel RG, Niehuis O, Petersen M, Izquierdo-Carrasco F, Wappler T, Rust J, Aberer AJ, Aspock U, Aspock H, Bartel D, Blanke A, Berger S, Bohm A, Buckley TR, Calcott B, Chen J, Friedrich F, Fukui M, Fujita M, Greve C, Grobe P, Gu S, Huang Y, Jermiin LS, Kawahara AY, Krogmann L, Kubiak M, Lanfear R, Letsch H, Li Y, Li Z, Li J, Lu H, Machida R, Mashimo Y, Kapli P, McKenna DD, Meng G, Nakagaki Y, Navarrete-Heredia JL, Ott M, Ou Y, Pass G, Podsiadlowski L, Pohl H, von Reumont BM, Schutte K, Sekiya K, Shimizu S, Slipinski A, Stamatakis A, Song W, Su X, Szucsich NU, Tan M, Tan X, Tang M, Tang J, Timelthaler G, Tomizuka S, Trautwein M, Tong X, Uchifune T, Walzl MG, Wiegmann BM, Wilbrandt J, Wipfler B, Wong TKF, Wu Q, Wu G, Xie Y, Yang S, Yang Q, Yeates DK, Yoshizawa K, Zhang Q, Zhang R, Zhang W, Zhang Y, Zhao J, Zhou C, Zhou L, Ziesmann T, Zou S, Li Y, Xu X, Zhang Y, Yang H, Wang J, Wang J, Kjer KM, Zhou X. Phylogenomics resolves the timing and pattern of insect evolution. Science 2014; 346:763-7. [DOI: 10.1126/science.1257570] [Citation(s) in RCA: 1672] [Impact Index Per Article: 167.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Klinguer-Hamour C, Broussas M, Akla B, Berger S, Boute N, Beau-Larvor C, Robert A, Haeuw J, Goetsch L, Bailly C, Corvaia N. 351 hz515H7, a humanized antibody exerts its antitumor activity via antagonism of the CXCR4/SDF-1 axis, and through effector functions. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70477-0] [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: 11/29/2022]
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Raman G, Avendano E, Berger S, Menon V, Bartlett J. Initial Inappropriate Antibiotic Therapy in Hospitalized Patients with Gram-Negative Infections: Systematic Review And Meta-Analysis. Value Health 2014; 17:A667. [PMID: 27202442 DOI: 10.1016/j.jval.2014.08.2461] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- G Raman
- Tufts University School of Medicine; Tufts Medical Center, Boston, MA, USA
| | | | - S Berger
- Tufts Medical Center, Boston, MA, USA
| | - V Menon
- Cubist Pharmaceuticals, Lexington, MA, USA
| | - J Bartlett
- Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Abstract
Abstract
A low temperature X-ray study of the enol of benzoylacetone indicates fixed positions of the C and O atoms within the enolic ring system and an extensive bond delocalisation over these atoms. The distribution of electron density between the two oxygen atoms shows that the enolic hydrogen is spread over a wide range. This is in accordance with a structural model proposed by de la Vega, whereupon the C and O atoms are kept fixed in their average positions during a tunneling process of the hydrogen between the two oxygen atoms. With this conception, the chemical shifts in the 17O and 13C NMR spectra, the 13C13C spin coupling constants and the temperature independance of these values can be explained.
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Affiliation(s)
- W. Winter
- Institut für Organische Chemie der Universität Tübingen, Auf der Morgenstelle 18, D-7400 Tübingen 1
| | - K.-P. Zeller
- Institut für Organische Chemie der Universität Tübingen, Auf der Morgenstelle 18, D-7400 Tübingen 1
| | - S. Berger
- Fachbereich Chemie der Universität Marburg, Lahnberge, D-3550 Marburg
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