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Grass D, Wrzaczek S, Caulkins JP, Feichtinger G, Hartl RF, Kort PM, Kuhn M, Prskawetz A, Sanchez-Romero M, Seidl A. Riding the waves from epidemic to endemic: Viral mutations, immunological change and policy responses. Theor Popul Biol 2024; 156:46-65. [PMID: 38310975 DOI: 10.1016/j.tpb.2024.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 01/30/2024] [Accepted: 02/01/2024] [Indexed: 02/06/2024]
Abstract
Nonpharmaceutical interventions (NPI) are an important tool for countering pandemics such as COVID-19. Some are cheap; others disrupt economic, educational, and social activity. The latter force governments to balance the health benefits of reduced infection and death against broader lockdown-induced societal costs. A literature has developed modeling how to optimally adjust lockdown intensity as an epidemic evolves. This paper extends that literature by augmenting the classic SIR model with additional states and flows capturing decay over time in vaccine-conferred immunity, the possibility that mutations create variants that erode immunity, and that protection against infection erodes faster than protecting against severe illness. As in past models, we find that small changes in parameter values can tip the optimal response between very different solutions, but the extensions considered here create new types of solutions. In some instances, it can be optimal to incur perpetual epidemic waves even if the uncontrolled infection prevalence would settle down to a stable intermediate level.
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Affiliation(s)
- D Grass
- International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria; Research Group Economics, Institute of Statistics and Mathematical Methods in Economics, TU Wien, Vienna, Austria
| | - S Wrzaczek
- International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria; Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/OeAW, University of Vienna), Austria.
| | - J P Caulkins
- Heinz College, Carnegie Mellon University, Pittsburgh, USA
| | - G Feichtinger
- Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/OeAW, University of Vienna), Austria; Research Group Variational Analysis, Dynamics & Operations Research, Institute of Statistics and Mathematical Methods in Economics, TU Wien, Vienna, Austria
| | - R F Hartl
- Department of Business Decisions and Analytics, University of Vienna, Vienna, Austria
| | - P M Kort
- Tilburg School of Economics and Management, Tilburg University, Tilburg, Netherlands
| | - M Kuhn
- International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria; Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/OeAW, University of Vienna), Austria
| | - A Prskawetz
- International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria; Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/OeAW, University of Vienna), Austria; Research Group Economics, Institute of Statistics and Mathematical Methods in Economics, TU Wien, Vienna, Austria
| | - M Sanchez-Romero
- International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria; Research Group Economics, Institute of Statistics and Mathematical Methods in Economics, TU Wien, Vienna, Austria; Vienna Institute of Demography (VID), Austrian Academy of Sciences (OeAW), Vienna, Austria
| | - A Seidl
- Department of Business Decisions and Analytics, University of Vienna, Vienna, Austria; Faculty of Management, Seeburg Castle University, Seekirchen am Wallersee, Austria
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Caulkins JP, Grass D, Feichtinger G, Hartl RF, Kort PM, Kuhn M, Prskawetz A, Sanchez-Romero M, Seidl A, Wrzaczek S. The hammer and the jab: Are COVID-19 lockdowns and vaccinations complements or substitutes? Eur J Oper Res 2023; 311:233-250. [PMID: 37342758 PMCID: PMC10131897 DOI: 10.1016/j.ejor.2023.04.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 04/19/2023] [Indexed: 06/23/2023]
Abstract
The COVID-19 pandemic has devastated lives and economies around the world. Initially a primary response was locking down parts of the economy to reduce social interactions and, hence, the virus' spread. After vaccines have been developed and produced in sufficient quantity, they can largely replace broad lock downs. This paper explores how lockdown policies should be varied during the year or so gap between when a vaccine is approved and when all who wish have been vaccinated. Are vaccines and lockdowns substitutes during that crucial time, in the sense that lockdowns should be reduced as vaccination rates rise? Or might they be complementary with the prospect of imminent vaccination increasing the value of stricter lockdowns, since hospitalization and death averted then may be permanently prevented, not just delayed? We investigate this question with a simple dynamic optimization model that captures both epidemiological and economic considerations. In this model, increasing the rate of vaccine deployment may increase or reduce the optimal total lockdown intensity and duration, depending on the values of other model parameters. That vaccines and lockdowns can act as either substitutes or complements even in a relatively simple model casts doubt on whether in more complicated models or the real world one should expect them to always be just one or the other. Within our model, for parameter values reflecting conditions in developed countries, the typical finding is to ease lockdown intensity gradually after substantial shares of the population have been vaccinated, but other strategies can be optimal for other parameter values. Reserving vaccines for those who have not yet been infected barely outperforms simpler strategies that ignore prior infection status. For certain parameter combinations, there are instances in which two quite different policies can perform equally well, and sometimes very small increases in vaccine capacity can tip the optimal solution to one that involves much longer and more intense lockdowns.
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Affiliation(s)
- J P Caulkins
- Heinz College, Carnegie Mellon University, Pittsburgh, USA
| | - D Grass
- International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg 2361, Austria
| | - G Feichtinger
- Department for Operations Research and Control Systems, Institute of Statistics and Mathematical Methods in Economics, Vienna University of Technology, Vienna, Austria
| | - R F Hartl
- Department of Business Decisions and Analytics, University of Vienna, Vienna, Austria
| | - P M Kort
- Tilburg School of Economics and Management, Tilburg University, Tilburg, Netherlands
| | - M Kuhn
- International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg 2361, Austria
- Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/OeAW, University of Vienna), Austria
| | - A Prskawetz
- International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg 2361, Austria
- Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/OeAW, University of Vienna), Austria
- Research Group Economics, Institute of Statistics and Mathematical Methods in Economics, Vienna University of Technology, Vienna, Austria
| | - M Sanchez-Romero
- International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg 2361, Austria
- Research Group Economics, Institute of Statistics and Mathematical Methods in Economics, Vienna University of Technology, Vienna, Austria
| | - A Seidl
- Department of Business Decisions and Analytics, University of Vienna, Vienna, Austria
| | - S Wrzaczek
- International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg 2361, Austria
- Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/OeAW, University of Vienna), Austria
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Alexander SPH, Fabbro D, Kelly E, Mathie AA, Peters JA, Veale EL, Armstrong JF, Faccenda E, Harding SD, Davies JA, Beuve A, Brouckaert P, Bryant C, Burnett JC, Farndale RW, Friebe A, Garthwaite J, Hobbs AJ, Jarvis GE, Koesling D, Kuhn M, MacEwan D, Monie TP, Potter LR, Russwurm M, Schmidt HHHW, Stasch JP, Waldman SA. The Concise Guide to PHARMACOLOGY 2023/24: Catalytic receptors. Br J Pharmacol 2023; 180 Suppl 2:S241-S288. [PMID: 38123155 DOI: 10.1111/bph.16180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
The Concise Guide to PHARMACOLOGY 2023/24 is the sixth in this series of biennial publications. The Concise Guide provides concise overviews, mostly in tabular format, of the key properties of approximately 1800 drug targets, and nearly 6000 interactions with about 3900 ligands. There is an emphasis on selective pharmacology (where available), plus links to the open access knowledgebase source of drug targets and their ligands (https://www.guidetopharmacology.org/), which provides more detailed views of target and ligand properties. Although the Concise Guide constitutes almost 500 pages, the material presented is substantially reduced compared to information and links presented on the website. It provides a permanent, citable, point-in-time record that will survive database updates. The full contents of this section can be found at http://onlinelibrary.wiley.com/doi/10.1111/bph.16180. Catalytic receptors are one of the six major pharmacological targets into which the Guide is divided, with the others being: G protein-coupled receptors, ion channels, nuclear hormone receptors, enzymes and transporters. These are presented with nomenclature guidance and summary information on the best available pharmacological tools, alongside key references and suggestions for further reading. The landscape format of the Concise Guide is designed to facilitate comparison of related targets from material contemporary to mid-2023, and supersedes data presented in the 2021/22, 2019/20, 2017/18, 2015/16 and 2013/14 Concise Guides and previous Guides to Receptors and Channels. It is produced in close conjunction with the Nomenclature and Standards Committee of the International Union of Basic and Clinical Pharmacology (NC-IUPHAR), therefore, providing official IUPHAR classification and nomenclature for human drug targets, where appropriate.
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Affiliation(s)
- Stephen P H Alexander
- School of Life Sciences, University of Nottingham Medical School, Nottingham, NG7 2UH, UK
| | | | - Eamonn Kelly
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, BS8 1TD, UK
| | - Alistair A Mathie
- School of Allied Health Sciences, University of Suffolk, Ipswich, IP4 1QJ, UK
| | - John A Peters
- Neuroscience Division, Medical Education Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY, UK
| | - Emma L Veale
- Medway School of Pharmacy, The Universities of Greenwich and Kent at Medway, Anson Building, Central Avenue, Chatham Maritime, Chatham, Kent, ME4 4TB, UK
| | - Jane F Armstrong
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Elena Faccenda
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Simon D Harding
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Jamie A Davies
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Annie Beuve
- New Jersey Medical School at Rutgers, New Jersey, USA
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Werner F, Prentki Santos E, Michel K, Schrader H, Völker K, Potapenko T, Krebes L, Abesser M, Möllmann D, Schlattjan M, Schmidt H, Skryabin BV, Špiranec Spes K, Schuh K, Denton CP, Baba HA, Kuhn M. Ablation of C-type natriuretic peptide/cGMP signaling in fibroblasts exacerbates adverse cardiac remodeling in mice. JCI Insight 2023:160416. [PMID: 37227779 PMCID: PMC10371345 DOI: 10.1172/jci.insight.160416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
Excessive activation of cardiac fibroblasts (CFs) in response to injury provokes cardiac fibrosis, stiffness, and failure. The local mediators counter-regulating this response remain unclear. Exogenous C-type natriuretic peptide (CNP) exerted antifibrotic effects in preclinical models. To unravel the role of the endogenous hormone, we generated mice with fibroblast-restricted deletion (KO) of guanylyl cyclase-B (GC-B), the cGMP-synthesizing CNP receptor.CNP activated GC-B/cGMP signaling in human and murine CFs, preventing proliferative and promigratory effects of AngiotensinII (AngII) and TGF-β. Fibroblast-specific GC-B-KO mice showed enhanced fibrosis in response to AngII infusions. Moreover, after two weeks of mild pressure-overload induced by transverse aortic constriction (TAC), such KO mice had augmented cardiac fibrosis and hypertrophy, together with systolic and diastolic contractile dysfunction. This was associated with increased expression of the profibrotic genes collagen I, III and periostin. Notably, such responses to AngII and TAC were greater in female as compared to male KO mice. Enhanced AngII-induced CNP expression in female hearts and augmented GC-B expression and activity in female CFs may contribute to this sex disparity.The results show that paracrine CNP signaling in CFs has antifibrotic and antihypertrophic effects. The CNP/GC-B/cGMP pathway might be a target for therapies combating pathological cardiac remodeling.
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Affiliation(s)
- Franziska Werner
- Institute of Physiology, University of Wuerzburg, Wuerzburg, Germany
| | | | - Konstanze Michel
- Institute of Physiology, University of Wuerzburg, Wuerzburg, Germany
| | - Hanna Schrader
- Institute of Physiology, University of Wuerzburg, Wuerzburg, Germany
| | - Katharina Völker
- Institute of Physiology, University of Wuerzburg, Wuerzburg, Germany
| | - Tamara Potapenko
- Institute of Physiology, University of Wuerzburg, Wuerzburg, Germany
| | - Lisa Krebes
- Institute of Physiology, University of Wuerzburg, Wuerzburg, Germany
| | - Marco Abesser
- Institute of Physiology, University of Wuerzburg, Wuerzburg, Germany
| | - Dorothe Möllmann
- Institute of Pathology, University Hospital Essen, Essen, Germany
| | | | - Hannes Schmidt
- Biochemistry, University of Tuebingen, Tuebingen, Germany
| | - Boris V Skryabin
- Institute of Experimental Pathology, University of Munster, Münster, Germany
| | | | - Kai Schuh
- Institute of Physiology, University of Wuerzburg, Wuerzburg, Germany
| | - Christopher P Denton
- Rheumatology, Centre for Rheumatology, Royal Free and University College Medical School, London, United Kingdom
| | - Hideo A Baba
- Institute of Pathology, University Hospital Essen, Essen, Germany
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Sangaralingham SJ, Kuhn M, Cannone V, Chen HH, Burnett JC. Natriuretic peptide pathways in heart failure: further therapeutic possibilities. Cardiovasc Res 2022; 118:3416-3433. [PMID: 36004816 PMCID: PMC9897690 DOI: 10.1093/cvr/cvac125] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/13/2022] [Accepted: 07/26/2022] [Indexed: 02/07/2023] Open
Abstract
The discovery of the heart as an endocrine organ resulted in a remarkable recognition of the natriuretic peptide system (NPS). Specifically, research has established the production of atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP) from the heart, which exert pleiotropic cardiovascular, endocrine, renal, and metabolic actions via the particulate guanylyl cyclase A receptor (GC-A) and the second messenger, cGMP. C-type natriuretic peptide (CNP) is produced in the endothelium and kidney and mediates important protective auto/paracrine actions via GC-B and cGMP. These actions, in part, participate in the efficacy of sacubitril/valsartan in heart failure (HF) due to the augmentation of the NPS. Here, we will review important insights into the biology of the NPS, the role of precision medicine, and focus on the phenotypes of human genetic variants of ANP and BNP in the general population and the relevance to HF. We will also provide an update of the existence of NP deficiency states, including in HF, which provide the rationale for further therapeutics for the NPS. Finally, we will review the field of peptide engineering and the development of novel designer NPs for the treatment of HF. Notably, the recent discovery of a first-in-class small molecule GC-A enhancer, which is orally deliverable, will be highlighted. These innovative designer NPs and small molecule possess enhanced and novel properties for the treatment of HF and cardiovascular diseases.
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Affiliation(s)
- S Jeson Sangaralingham
- Cardiorenal Research Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, 200 1st Street SW, Rochester, MN 55905, USA,Department of Physiology and Biomedical Engineering, Mayo Clinic 200 1st St SW, Rochester MN 55905, USA
| | - Michaela Kuhn
- Institute of Physiology, University of Wuerzburg, Roentgenring 9, D-97070 Wuerzburg, Germany
| | - Valentina Cannone
- Cardiorenal Research Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, 200 1st Street SW, Rochester, MN 55905, USA,Department of Medicine and Surgery, University of Parma, Via Gramsci 14, 43126 Parma, Italy
| | - Horng H Chen
- Cardiorenal Research Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, 200 1st Street SW, Rochester, MN 55905, USA
| | - John C Burnett
- Corresponding author. Tel: 507 284-4343; fax: 507 266-4710; E-mail:
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Kiss I, Kuhn M, Hrusak K, Buchler T. Incidence of fatigue associated with immune checkpoint inhibitors in patients with cancer: a meta-analysis. ESMO Open 2022; 7:100474. [PMID: 35576697 PMCID: PMC9271472 DOI: 10.1016/j.esmoop.2022.100474] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/11/2022] [Accepted: 03/26/2022] [Indexed: 12/11/2022] Open
Abstract
Background Fatigue is one of the most common adverse effects associated with cancer immunotherapy using checkpoint inhibitors (CPIs). Because treatment-related fatigue also frequently occurs in patients treated with non-immunological therapies, our study aimed to compare the incidence of fatigue in CPI-treated patients with that associated with non-immune therapies in randomised trials. Methods PubMed and ClinicalTrials.gov were searched for phase III studies using a CPI alone or in combination with chemotherapy or non-immunologic targeted therapy in the experimental arm and control arm using inactive therapies such as placebo or observation, chemotherapy, or non-immunologic targeted therapy. Adverse events listed in the full texts as well as those available from clinicaltrials.gov were reviewed for all identified studies. Results A total of 60 studies involving 41 435 patients were included in the analysis. All-grade fatigue was reported in 30.4% of patients [95% confidence interval (CI) 29.9% to 31.0%] in the immunotherapy arms of the analysed studies. Using anti-programmed cell death protein 1 agents as reference, the odds ratio (OR) for fatigue was significantly higher both for anti-cytotoxic T lymphocyte-associated antigen 4 agents (OR 1.46, 95% CI 1.04-2.04) and the combination of anti-cytotoxic T lymphocyte-associated antigen 4 and anti-programmed cell death protein agents (OR 1.43, 95% CI 1.12-1.83). Fatigue was significantly less likely to occur in patients treated with CPI compared with patients receiving chemotherapy (OR 0.79, 95% CI 0.73-0.85), but significantly was more common in patients receiving the combination of CPI/chemotherapy compared with patients receiving chemotherapy alone (OR 1.12, 95% CI 1.03-1.22). Conclusions Although immunotherapy using CPIs was associated with treatment-related fatigue, the occurrence of all-grade fatigue was significantly higher in patients treated with chemotherapy compared with patients receiving CPIs. The risk of fatigue was higher for CPI/chemotherapy combinations than for chemotherapy alone. These results suggest that although the effects of CPIs and chemotherapy are additive, chemotherapy was the dominant cause of treatment-related fatigue in the analysed trials. Fatigue is a common adverse event associated with cancer immunotherapy but also with other therapies and with cancer itself. This meta-analysis analysed the incidence of fatigue reported in phase III trials of checkpoint inhibitors. Fatigue was more common in patients treated with chemotherapy compared with patients receiving checkpoint inhibitors. Chemotherapy was the dominant cause of fatigue in combinations of chemotherapy and checkpoint inhibitors.
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Affiliation(s)
- I Kiss
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - M Kuhn
- Institute of Biostatistics and Analyses Ltd, Masaryk University, Brno, Czech Republic
| | - K Hrusak
- Department of Oncology, First Faculty of Medicine, Charles University and Thomayer University Hospital, Prague, Czech Republic
| | - T Buchler
- Department of Oncology, First Faculty of Medicine, Charles University and Thomayer University Hospital, Prague, Czech Republic.
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Hu KX, Awange JL, Kuhn M. Testing a knowledge-based approach for inferring spatio-temporal characteristics of groundwater in the Australian State of Victoria. Sci Total Environ 2022; 821:153113. [PMID: 35063510 DOI: 10.1016/j.scitotenv.2022.153113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/07/2022] [Accepted: 01/10/2022] [Indexed: 06/14/2023]
Abstract
Groundwater spatio-temporal characteristics are important information for groundwater development and management. However, such information is usually insufficient or even unavailable in many regions around the world due to insufficient or even lack of in-situ data such as from boreholes. Recently, a knowledge-based approach was proposed to infer 'where' and 'when' to find groundwater using Lake Victoria Basin (LVB) as an example for data-deficient regions. In this knowledge-based approach, groundwater model and inversion analysis of groundwater impact factors are used to infer groundwater storage potential and recharge timing. In the LVB's case, only 10 borehole data were used to test the spatio-temporal behaviours of groundwater, which are insufficient. In this contribution, therefore, using the Australian State of Victoria as an example, with over 15,000 boreholes data, the performance of the same knowledge-based approach is further tested in a well-controlled area. The results indicate that the knowledge-based approach is able to correctly infer regions with large groundwater storage potential suitable for extraction. The recharge timing of groundwater is also correctly indicated as the results show consistency with the borehole data. This provides further evidence of the reliability of the knowledge-based approach for inferring spatio-temporal characteristics of groundwater.
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Affiliation(s)
- K X Hu
- School of Earth and Planetary Sciences, Spatial Science Discipline, Curtin University, Perth, Australia.
| | - J L Awange
- School of Earth and Planetary Sciences, Spatial Science Discipline, Curtin University, Perth, Australia
| | - M Kuhn
- School of Earth and Planetary Sciences, Spatial Science Discipline, Curtin University, Perth, Australia
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Werner F, Kojonazarov B, Gaßner B, Abeßer M, Schuh K, Völker K, Baba HA, Dahal BK, Schermuly RT, Kuhn M. Correction to: Endothelial actions of atrial natriuretic peptide prevent pulmonary hypertension in mice. Basic Res Cardiol 2022; 117:7. [PMID: 35229176 PMCID: PMC8885509 DOI: 10.1007/s00395-022-00916-9] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Franziska Werner
- Physiologisches Institut der Universität Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Baktybek Kojonazarov
- Department of Internal Medicine, University of Gießen and Marburg Lung Center (UGMLC), Justus-Liebig University Gießen, Giessen, Germany.,German Center for Lung Research, Heidelberg, Germany
| | - Birgit Gaßner
- Physiologisches Institut der Universität Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Marco Abeßer
- Physiologisches Institut der Universität Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Kai Schuh
- Physiologisches Institut der Universität Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Katharina Völker
- Physiologisches Institut der Universität Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Hideo A Baba
- Institute of Pathology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Bhola K Dahal
- Department of Internal Medicine, University of Gießen and Marburg Lung Center (UGMLC), Justus-Liebig University Gießen, Giessen, Germany.,German Center for Lung Research, Heidelberg, Germany
| | - Ralph T Schermuly
- Department of Internal Medicine, University of Gießen and Marburg Lung Center (UGMLC), Justus-Liebig University Gießen, Giessen, Germany.,German Center for Lung Research, Heidelberg, Germany
| | - Michaela Kuhn
- Physiologisches Institut der Universität Würzburg, Röntgenring 9, 97070, Würzburg, Germany.
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Kuhn M, Gonzalez E, Weil L, Izguttinov A, Walker S. Effectiveness of Child-Focused Interventions for Externalizing Behavior: a Rapid Evidence Review. Res Child Adolesc Psychopathol 2022; 50:987-1009. [PMID: 35212851 DOI: 10.1007/s10802-022-00904-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/31/2022] [Indexed: 10/19/2022]
Abstract
Parent behavior management training (BMT) is well established as an effective, evidence-based treatment for children with externalizing behavior. Despite the wealth of data supporting BMT, many community providers use a variety of child-focused and non-directive interventions to target behavior problems. There is lack of clarity as to whether the evidence supporting child-focused externalizing treatments is sufficiently compelling to support offering these treatments rather than or in addition to BMT. This rapid evidence review compares the effectiveness of BMT with several common child-focused interventions for externalizing behavior including cognitive behavioral (CBT), social skill (SS), and play/dynamic (PT) approaches. PubMed, PsychINFO, and Web of Science were searched for English-language articles from year 2000 onwards for each intervention type. Inclusion criteria were child age (12 and under), presence of a child-focused behavioral treatment condition, and externalizing behavior as an outcome variable. A total of 30 studies met inclusion criteria and were coded (13 CBT, 10 SS, 7 PT). Results supported social skills interventions with accompanying BMT as effective in improving externalizing problems, with generally moderate effect sizes. Individual social skills interventions were promising but needing further evaluation compared to treatment as usual. CBT treatments with and without accompanying BMT showed moderate effects over waitlist but produced less consistently significant effects compared to more robust controls. Play therapy approaches showed inconsistent effects and require further evaluation. This review supports social skills plus BMT treatments as a child-focused intervention with probable efficacy for child externalizing problems. Implications for policy and community practice are discussed.
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Affiliation(s)
- M Kuhn
- Seattle Children's Hospital and Research Institute, Seattle, WA, USA. .,University of Washington Child and Adolescent Psychiatry, Seattle, WA, USA.
| | - E Gonzalez
- Seattle Children's Hospital and Research Institute, Seattle, WA, USA.,University of Washington Child and Adolescent Psychiatry, Seattle, WA, USA
| | - L Weil
- University of Washington Evidence Based Practice Institute, Seattle, WA, USA
| | - A Izguttinov
- University of Washington Evidence Based Practice Institute, Seattle, WA, USA
| | - S Walker
- University of Washington Evidence Based Practice Institute, Seattle, WA, USA
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Cruz-Garcia Y, Barkovits K, Kohlhaas M, Pickel S, Gulentz M, Heindl C, Pfeiffer K, Eder-Negrin P, Maack C, Marcus K, Kuhn M, Miranda-Laferte E. Nanoenviroments of the β-Subunit of L-Type Voltage-Gated Calcium Channels in Adult Cardiomyocytes. Front Cell Dev Biol 2022; 9:724778. [PMID: 35047492 PMCID: PMC8762238 DOI: 10.3389/fcell.2021.724778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 12/06/2021] [Indexed: 11/23/2022] Open
Abstract
In cardiomyocytes, Ca2+ influx through L-type voltage-gated calcium channels (LTCCs) following membrane depolarization regulates crucial Ca2+-dependent processes including duration and amplitude of the action potentials and excitation-contraction coupling. LTCCs are heteromultimeric proteins composed of the Cavα1, Cavβ, Cavα2δ and Cavγ subunits. Here, using ascorbate peroxidase (APEX2)-mediated proximity labeling and quantitative proteomics, we identified 61 proteins in the nanoenvironments of Cavβ2 in cardiomyocytes. These proteins are involved in diverse cellular functions such as cellular trafficking, cardiac contraction, sarcomere organization and excitation-contraction coupling. Moreover, pull-down assays and co-immunoprecipitation analyses revealed that Cavβ2 interacts with the ryanodine receptor 2 (RyR2) in adult cardiomyocytes, probably coupling LTCCs and the RyR2 into a supramolecular complex at the dyads. This interaction is mediated by the Src-homology 3 domain of Cavβ2 and is necessary for an effective pacing frequency-dependent increase of the Ca2+-induced Ca2+ release mechanism in cardiomyocytes.
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Affiliation(s)
| | - Katalin Barkovits
- Medizinisches Proteom-Center, Medical Faculty, Ruhr-University Bochum, Bochum, Germany.,Medical Proteome Analysis, Center for Proteindiagnostics (PRODI), Ruhr-University Bochum, Bochum, Germany
| | - Michael Kohlhaas
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Simone Pickel
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Michelle Gulentz
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Cornelia Heindl
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Kathy Pfeiffer
- Medizinisches Proteom-Center, Medical Faculty, Ruhr-University Bochum, Bochum, Germany.,Medical Proteome Analysis, Center for Proteindiagnostics (PRODI), Ruhr-University Bochum, Bochum, Germany
| | - Petra Eder-Negrin
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Christoph Maack
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Katrin Marcus
- Medizinisches Proteom-Center, Medical Faculty, Ruhr-University Bochum, Bochum, Germany.,Medical Proteome Analysis, Center for Proteindiagnostics (PRODI), Ruhr-University Bochum, Bochum, Germany
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Würzburg, Germany.,Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Erick Miranda-Laferte
- Institute of Physiology, University of Würzburg, Würzburg, Germany.,Institut für Biologische Informationsprozesse, Molekular- und Zellphysiologie (IBI-1), Forschungszentrum Jülich, Jülich, Germany
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11
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Tauber P, Sinha F, Berger RS, Gronwald W, Dettmer K, Kuhn M, Trum M, Maier LS, Wagner S, Schweda F. Empagliflozin Reduces Renal Hyperfiltration in Response to Uninephrectomy, but Is Not Nephroprotective in UNx/DOCA/Salt Mouse Models. Front Pharmacol 2021; 12:761855. [PMID: 34992532 PMCID: PMC8724563 DOI: 10.3389/fphar.2021.761855] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 12/06/2021] [Indexed: 12/20/2022] Open
Abstract
Large-scale clinical outcome studies demonstrated the efficacy of SGLT2 inhibitors in patients with type II diabetes. Besides their therapeutic efficacy in diabetes, significant renoprotection was observed in non-diabetic patients with chronic kidney disease (CKD), suggesting the existence of glucose-independent beneficial effects of SGLT2 inhibitors. However, the relevant mechanisms by which SGLT2 inhibition delays the progression of renal injury are still largely unknown and speculative. Previous studies showed that SGLT2 inhibitors reduce diabetic hyperfiltration, which is likely a key element in renoprotection. In line with this hypothesis, this study aimed to investigate the nephroprotective effects of the SGLT2 inhibitor empagliflozin (EMPA) in different mouse models with non-diabetic hyperfiltration and progressing CKD to identify the underlying diabetes-independent cellular mechanisms. Non-diabetic hyperfiltration was induced by unilateral nephrectomy (UNx). Since UNx alone does not result in renal damage, renal disease models with varying degrees of glomerular damage and albuminuria were generated by combining UNx with high NaCl diets ± deoxycorticosterone acetate (DOCA) in different mouse strains with and without genetic predisposition for glomerular injury. Renal parameters (GFR, albuminuria, urine volume) were monitored for 4–6 weeks. Application of EMPA via the drinking water resulted in sufficient EMPA plasma concentration and caused glucosuria, diuresis and in some models renal hypertrophy. EMPA had no effect on GFR in untreated wildtype animals, but significantly reduced hyperfiltration after UNx by 36%. In contrast, EMPA did not reduce UNx induced hyperfiltration in any of our kidney disease models, regardless of their degree of glomerular damage caused by DOCA/salt treatment. Consistent with the lack of reduction in glomerular hyperfiltration, EMPA-treated animals developed albuminuria and renal fibrosis to a similar extent as H2O control animals. Taken together, the data clearly indicate that blockade of SGLT2 has the potential to reduce non-diabetic hyperfiltration in otherwise untreated mice. However, no effects on hyperfiltration or progression of renal injury were observed in hypervolemic kidney disease models, suggesting that high salt intake and extracellular volume might attenuate the protective effects of SGLT2 blockers.
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Affiliation(s)
- Philipp Tauber
- Institute of Physiology, University of Regensburg, Regensburg, Germany
- *Correspondence: Philipp Tauber,
| | - Frederick Sinha
- Institute of Physiology, University of Regensburg, Regensburg, Germany
| | - Raffaela S. Berger
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | - Wolfram Gronwald
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | - Katja Dettmer
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Maximilian Trum
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Lars S. Maier
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Stefan Wagner
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Frank Schweda
- Institute of Physiology, University of Regensburg, Regensburg, Germany
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12
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Hu KX, Awange JL, Kuhn M, Nanteza J. Inference of the spatio-temporal variability and storage potential of groundwater in data-deficient regions through groundwater models and inversion of impact factors on groundwater, as exemplified by the Lake Victoria Basin. Sci Total Environ 2021; 800:149355. [PMID: 34399330 DOI: 10.1016/j.scitotenv.2021.149355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 06/24/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Groundwater is an important resource for supporting domestic water use for people's livelihoods and for maintaining ecosystems. Borehole observations provide the first-hand data that characterise the fluctuation, depth, and aquifer conditions of the groundwater. Unfortunately, such observations are not available or are insufficient for scientific use in many regions. Taking the Lake Victoria Basin (LVB) as an example of data-deficient regions, this study proposes a simple knowledge-based approach that uses the Global Land Data Assimilation System (GLDAS) Catchment Land Surface Model (CLSM) for the main data, with rainfall, hydrological, topographical and geological datasets as supports, by which to infer the spatio-temporal variability and storage potential of groundwater. The method is based on analysis and inversion of impact factors on groundwater, and the feasibility of such a method is proven by showing that the groundwater results from GLDAS CLSM can correctly indicate the seasonality, as well as the link to topographical and geological features. For example, both results from the water balance equation (WBE) and GLDAS CLSM indicate that there are two groundwater recharge seasons in the basin, e.g., March to May and September to November. Compared to the eastern side of the LVB, the western side has mountains blocking surface runoff, and thus, reasonably, has larger storage potential estimates in GLDAS CLSM. Due to the low degree of weathering of the basement rocks, it is expected that there is only small storage potential and variation of groundwater in the southeastern parts of the LVB. GLDAS CLSM also correctly reflects this behaviour. Additionally, the largest groundwater storage potential over the LVB is found in regions near the Kagera River and the western shoreline, since it associates with unconsolidated rocks and behaviours of large groundwater recharge from GLDAS CSLM during the wet year of 2006. The major limitation of this knowledge-based method is that the uncertainty in terms of magnitude on GLDAS CLSM groundwater changes cannot be assessed, in addition to the fact that the reliability of the results cannot be quantified in terms of specific numbers. Therefore, the results and interpretation of groundwater behaviours using such methods can only be a guide for 'where' and 'when' to find groundwater.
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Affiliation(s)
- K X Hu
- School of Earth and Planetary Sciences, Spatial Science Discipline, Curtin University, Perth, Australia.
| | - J L Awange
- School of Earth and Planetary Sciences, Spatial Science Discipline, Curtin University, Perth, Australia; Geodetic Institute, Karlsruhe Institute of Technology, Engler-Strasse 7, D-76131 Karlsruhe, Germany
| | - M Kuhn
- School of Earth and Planetary Sciences, Spatial Science Discipline, Curtin University, Perth, Australia
| | - J Nanteza
- Department of Geography, Geo-Informatics and Climatic Sciences, Makerere University, Uganda
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13
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Bertero E, Nickel A, Kohlhaas M, Hohl M, Sequeira V, Brune C, Schwemmlein J, Abeßer M, Schuh K, Kutschka I, Carlein C, Münker K, Atighetchi S, Müller A, Kazakov A, Kappl R, von der Malsburg K, van der Laan M, Schiuma AF, Böhm M, Laufs U, Hoth M, Rehling P, Kuhn M, Dudek J, von der Malsburg A, Prates Roma L, Maack C. Loss of Mitochondrial Ca 2+ Uniporter Limits Inotropic Reserve and Provides Trigger and Substrate for Arrhythmias in Barth Syndrome Cardiomyopathy. Circulation 2021; 144:1694-1713. [PMID: 34648376 DOI: 10.1161/circulationaha.121.053755] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Barth syndrome (BTHS) is caused by mutations of the gene encoding tafazzin, which catalyzes maturation of mitochondrial cardiolipin and often manifests with systolic dysfunction during early infancy. Beyond the first months of life, BTHS cardiomyopathy typically transitions to a phenotype of diastolic dysfunction with preserved ejection fraction, blunted contractile reserve during exercise, and arrhythmic vulnerability. Previous studies traced BTHS cardiomyopathy to mitochondrial formation of reactive oxygen species (ROS). Because mitochondrial function and ROS formation are regulated by excitation-contraction coupling, integrated analysis of mechano-energetic coupling is required to delineate the pathomechanisms of BTHS cardiomyopathy. METHODS We analyzed cardiac function and structure in a mouse model with global knockdown of tafazzin (Taz-KD) compared with wild-type littermates. Respiratory chain assembly and function, ROS emission, and Ca2+ uptake were determined in isolated mitochondria. Excitation-contraction coupling was integrated with mitochondrial redox state, ROS, and Ca2+ uptake in isolated, unloaded or preloaded cardiac myocytes, and cardiac hemodynamics analyzed in vivo. RESULTS Taz-KD mice develop heart failure with preserved ejection fraction (>50%) and age-dependent progression of diastolic dysfunction in the absence of fibrosis. Increased myofilament Ca2+ affinity and slowed cross-bridge cycling caused diastolic dysfunction, in part, compensated by accelerated diastolic Ca2+ decay through preactivated sarcoplasmic reticulum Ca2+-ATPase. Taz deficiency provoked heart-specific loss of mitochondrial Ca2+ uniporter protein that prevented Ca2+-induced activation of the Krebs cycle during β-adrenergic stimulation, oxidizing pyridine nucleotides and triggering arrhythmias in cardiac myocytes. In vivo, Taz-KD mice displayed prolonged QRS duration as a substrate for arrhythmias, and a lack of inotropic response to β-adrenergic stimulation. Cellular arrhythmias and QRS prolongation, but not the defective inotropic reserve, were restored by inhibiting Ca2+ export through the mitochondrial Na+/Ca2+ exchanger. All alterations occurred in the absence of excess mitochondrial ROS in vitro or in vivo. CONCLUSIONS Downregulation of mitochondrial Ca2+ uniporter, increased myofilament Ca2+ affinity, and preactivated sarcoplasmic reticulum Ca2+-ATPase provoke mechano-energetic uncoupling that explains diastolic dysfunction and the lack of inotropic reserve in BTHS cardiomyopathy. Furthermore, defective mitochondrial Ca2+ uptake provides a trigger and a substrate for ventricular arrhythmias. These insights can guide the ongoing search for a cure of this orphaned disease.
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Affiliation(s)
- Edoardo Bertero
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.).,Now with Department of Internal Medicine and Specialties (Di.M.I.), University of Genoa, Italy (E.B.)
| | - Alexander Nickel
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.)
| | - Michael Kohlhaas
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.)
| | - Mathias Hohl
- Clinic for Internal Medicine III (M. Hohl, C.B., K.M., S.A., A.K., M.B., C.M.), Saarland University Clinic, Homburg/Saar, Germany
| | - Vasco Sequeira
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.)
| | - Carolin Brune
- Clinic for Internal Medicine III (M. Hohl, C.B., K.M., S.A., A.K., M.B., C.M.), Saarland University Clinic, Homburg/Saar, Germany
| | - Julia Schwemmlein
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.)
| | - Marco Abeßer
- Institute of Physiology, University of Würzburg, Germany (M.A., K.S., M. Kuhn)
| | - Kai Schuh
- Institute of Physiology, University of Würzburg, Germany (M.A., K.S., M. Kuhn)
| | - Ilona Kutschka
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.)
| | - Christopher Carlein
- Department for Biophysics, ZHMB, CIPMM (C.C., R.K., M. Hoth, L.P.R.), Saarland University, Homburg/Saar, Germany
| | - Kai Münker
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.).,Clinic for Internal Medicine III (M. Hohl, C.B., K.M., S.A., A.K., M.B., C.M.), Saarland University Clinic, Homburg/Saar, Germany
| | - Sarah Atighetchi
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.).,Clinic for Internal Medicine III (M. Hohl, C.B., K.M., S.A., A.K., M.B., C.M.), Saarland University Clinic, Homburg/Saar, Germany
| | - Andreas Müller
- Clinic for Radiology (A.M.), Saarland University Clinic, Homburg/Saar, Germany
| | - Andrey Kazakov
- Clinic for Internal Medicine III (M. Hohl, C.B., K.M., S.A., A.K., M.B., C.M.), Saarland University Clinic, Homburg/Saar, Germany
| | - Reinhard Kappl
- Department for Biophysics, ZHMB, CIPMM (C.C., R.K., M. Hoth, L.P.R.), Saarland University, Homburg/Saar, Germany
| | - Karina von der Malsburg
- Medical Biochemistry and Molecular Biology, Center for Molecular Signaling, PZMS, Faculty of Medicine (K.v.d.M., M.v.d.L., A.v.d.M.), Saarland University, Homburg/Saar, Germany
| | - Martin van der Laan
- Medical Biochemistry and Molecular Biology, Center for Molecular Signaling, PZMS, Faculty of Medicine (K.v.d.M., M.v.d.L., A.v.d.M.), Saarland University, Homburg/Saar, Germany
| | - Anna-Florentine Schiuma
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.)
| | - Michael Böhm
- Clinic for Internal Medicine III (M. Hohl, C.B., K.M., S.A., A.K., M.B., C.M.), Saarland University Clinic, Homburg/Saar, Germany
| | - Ulrich Laufs
- Now with Klinik und Poliklinik für Kardiologie, Universitätsklinikum Leipzig, Germany (U.L.)
| | - Markus Hoth
- Department for Biophysics, ZHMB, CIPMM (C.C., R.K., M. Hoth, L.P.R.), Saarland University, Homburg/Saar, Germany
| | - Peter Rehling
- Department of Cellular Biochemistry, Georg-August University, Göttingen, Germany (P.R., J.D.).,Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, Germany (P.R.).,Max-Planck Institute for Biophysical Chemistry, Göttingen, Germany (P.R.)
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Germany (M.A., K.S., M. Kuhn)
| | - Jan Dudek
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.).,Department of Cellular Biochemistry, Georg-August University, Göttingen, Germany (P.R., J.D.)
| | - Alexander von der Malsburg
- Medical Biochemistry and Molecular Biology, Center for Molecular Signaling, PZMS, Faculty of Medicine (K.v.d.M., M.v.d.L., A.v.d.M.), Saarland University, Homburg/Saar, Germany
| | - Leticia Prates Roma
- Department for Biophysics, ZHMB, CIPMM (C.C., R.K., M. Hoth, L.P.R.), Saarland University, Homburg/Saar, Germany
| | - Christoph Maack
- Department of Translational Research, Comprehensive Heart Failure Center, University Clinic, Würzburg, Germany (E.B., A.N., M. Kohlhaas, V.S., J.S., I.K., K.M., S.A., A.-F.S., J.D., C.M.).,Clinic for Internal Medicine III (M. Hohl, C.B., K.M., S.A., A.K., M.B., C.M.), Saarland University Clinic, Homburg/Saar, Germany.,Department for Internal Medicine 1, University Clinic Würzburg, Germany (C.M.)
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14
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Bork NI, Kuret A, Cruz Santos M, Molina CE, Reiter B, Reichenspurner H, Friebe A, Skryabin BV, Rozhdestvensky TS, Kuhn M, Lukowski R, Nikolaev VO. Rise of cGMP by partial phosphodiesterase-3A degradation enhances cardioprotection during hypoxia. Redox Biol 2021; 48:102179. [PMID: 34763298 PMCID: PMC8590074 DOI: 10.1016/j.redox.2021.102179] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/28/2021] [Accepted: 11/05/2021] [Indexed: 12/11/2022] Open
Abstract
3',5'-cyclic guanosine monophosphate (cGMP) is a druggable second messenger regulating cell growth and survival in a plethora of cells and disease states, many of which are associated with hypoxia. For example, in myocardial infarction and heart failure (HF), clinical use of cGMP-elevating drugs improves disease outcomes. Although they protect mice from ischemia/reperfusion (I/R) injury, the exact mechanism how cardiac cGMP signaling is regulated in response to hypoxia is still largely unknown. By monitoring real-time cGMP dynamics in murine and human cardiomyocytes using in vitro and in vivo models of hypoxia/reoxygenation (H/R) and I/R injury combined with biochemical methods, we show that hypoxia causes rapid but partial degradation of cGMP-hydrolyzing phosphodiesterase-3A (PDE3A) protein via the autophagosomal-lysosomal pathway. While increasing cGMP in hypoxia prevents cell death, partially reduced PDE3A does not change the pro-apoptotic second messenger 3',5'-cyclic adenosine monophosphate (cAMP). However, it leads to significantly enhanced protective effects of clinically relevant activators of nitric oxide-sensitive guanylyl cyclase (NO-GC). Collectively, our mouse and human data unravel a new mechanism by which cardiac cGMP improves hypoxia-associated disease conditions.
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Affiliation(s)
- Nadja I Bork
- Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Anna Kuret
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of Tübingen, Tübingen, Germany
| | - Melanie Cruz Santos
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of Tübingen, Tübingen, Germany
| | - Cristina E Molina
- Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Beate Reiter
- Department of Cardiovascular Surgery, University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - Hermann Reichenspurner
- Department of Cardiovascular Surgery, University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - Andreas Friebe
- Physiologisches Institut, University of Würzburg, Würzburg, Germany
| | - Boris V Skryabin
- Core Facility Transgenic Animal and Genetic Engineering Models (TRAM), University of Münster, Münster, Germany
| | - Timofey S Rozhdestvensky
- Core Facility Transgenic Animal and Genetic Engineering Models (TRAM), University of Münster, Münster, Germany
| | - Michaela Kuhn
- Physiologisches Institut, University of Würzburg, Würzburg, Germany
| | - Robert Lukowski
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of Tübingen, Tübingen, Germany
| | - Viacheslav O Nikolaev
- Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany.
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15
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Alexander SP, Fabbro D, Kelly E, Mathie A, Peters JA, Veale EL, Armstrong JF, Faccenda E, Harding SD, Pawson AJ, Southan C, Davies JA, Beuve A, Brouckaert P, Bryant C, Burnett JC, Farndale RW, Friebe A, Garthwaite J, Hobbs AJ, Jarvis GE, Kuhn M, MacEwan D, Monie TP, Papapetropoulos A, Potter LR, Schmidt HHHW, Szabo C, Waldman SA. THE CONCISE GUIDE TO PHARMACOLOGY 2021/22: Catalytic receptors. Br J Pharmacol 2021; 178 Suppl 1:S264-S312. [PMID: 34529829 DOI: 10.1111/bph.15541] [Citation(s) in RCA: 136] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The Concise Guide to PHARMACOLOGY 2021/22 is the fifth in this series of biennial publications. The Concise Guide provides concise overviews, mostly in tabular format, of the key properties of nearly 1900 human drug targets with an emphasis on selective pharmacology (where available), plus links to the open access knowledgebase source of drug targets and their ligands (www.guidetopharmacology.org), which provides more detailed views of target and ligand properties. Although the Concise Guide constitutes over 500 pages, the material presented is substantially reduced compared to information and links presented on the website. It provides a permanent, citable, point-in-time record that will survive database updates. The full contents of this section can be found at http://onlinelibrary.wiley.com/doi/bph.15541. Catalytic receptors are one of the six major pharmacological targets into which the Guide is divided, with the others being: G protein-coupled receptors, ion channels, nuclear hormone receptors, enzymes and transporters. These are presented with nomenclature guidance and summary information on the best available pharmacological tools, alongside key references and suggestions for further reading. The landscape format of the Concise Guide is designed to facilitate comparison of related targets from material contemporary to mid-2021, and supersedes data presented in the 2019/20, 2017/18, 2015/16 and 2013/14 Concise Guides and previous Guides to Receptors and Channels. It is produced in close conjunction with the Nomenclature and Standards Committee of the International Union of Basic and Clinical Pharmacology (NC-IUPHAR), therefore, providing official IUPHAR classification and nomenclature for human drug targets, where appropriate.
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Affiliation(s)
- Stephen Ph Alexander
- School of Life Sciences, University of Nottingham Medical School, Nottingham, NG7 2UH, UK
| | | | - Eamonn Kelly
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, BS8 1TD, UK
| | - Alistair Mathie
- Medway School of Pharmacy, The Universities of Greenwich and Kent at Medway, Anson Building, Central Avenue, Chatham Maritime, Chatham, Kent, ME4 4TB, UK
| | - John A Peters
- Neuroscience Division, Medical Education Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY, UK
| | - Emma L Veale
- Medway School of Pharmacy, The Universities of Greenwich and Kent at Medway, Anson Building, Central Avenue, Chatham Maritime, Chatham, Kent, ME4 4TB, UK
| | - Jane F Armstrong
- Neuroscience Division, Medical Education Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY, UK
| | - Elena Faccenda
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Simon D Harding
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Adam J Pawson
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Christopher Southan
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Jamie A Davies
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | | | | | | | - John C Burnett
- Mayo Foundation for Medical Education and Research, Rochester, USA
| | | | | | | | | | | | | | | | | | | | | | | | - Csaba Szabo
- University of Texas Medical Branch, Galveston, USA
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16
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Pickel S, Cruz-Garcia Y, Bandleon S, Barkovits K, Heindl C, Völker K, Abeßer M, Pfeiffer K, Schaaf A, Marcus K, Eder-Negrin P, Kuhn M, Miranda-Laferte E. The β 2-Subunit of Voltage-Gated Calcium Channels Regulates Cardiomyocyte Hypertrophy. Front Cardiovasc Med 2021; 8:704657. [PMID: 34307509 PMCID: PMC8292724 DOI: 10.3389/fcvm.2021.704657] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 06/09/2021] [Indexed: 12/16/2022] Open
Abstract
L-type voltage-gated calcium channels (LTCCs) regulate crucial physiological processes in the heart. They are composed of the Cavα1 pore-forming subunit and the accessory subunits Cavβ, Cavα2δ, and Cavγ. Cavβ is a cytosolic protein that regulates channel trafficking and activity, but it also exerts other LTCC-independent functions. Cardiac hypertrophy, a relevant risk factor for the development of congestive heart failure, depends on the activation of calcium-dependent pro-hypertrophic signaling cascades. Here, by using shRNA-mediated Cavβ silencing, we demonstrate that Cavβ2 downregulation enhances α1-adrenergic receptor agonist-induced cardiomyocyte hypertrophy. We report that a pool of Cavβ2 is targeted to the nucleus in cardiomyocytes and that the expression of this nuclear fraction decreases during in vitro and in vivo induction of cardiac hypertrophy. Moreover, the overexpression of nucleus-targeted Cavβ2 in cardiomyocytes inhibits in vitro-induced hypertrophy. Quantitative proteomic analyses showed that Cavβ2 knockdown leads to changes in the expression of diverse myocyte proteins, including reduction of calpastatin, an endogenous inhibitor of the calcium-dependent protease calpain. Accordingly, Cavβ2-downregulated cardiomyocytes had a 2-fold increase in calpain activity as compared to control cells. Furthermore, inhibition of calpain activity in Cavβ2-downregulated cells abolished the enhanced α1-adrenergic receptor agonist-induced hypertrophy observed in these cells. Our findings indicate that in cardiomyocytes, a nuclear pool of Cavβ2 participates in cellular functions that are independent of LTCC activity. They also indicate that a downregulation of nuclear Cavβ2 during cardiomyocyte hypertrophy promotes the activation of calpain-dependent hypertrophic pathways.
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Affiliation(s)
- Simone Pickel
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | | | - Sandra Bandleon
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Katalin Barkovits
- Medizinisches Proteom-Center, Medical Faculty, Ruhr-University Bochum, Bochum, Germany.,Medical Proteome Analysis, Center for Proteindiagnostics (PRODI), Ruhr-University Bochum, Bochum, Germany
| | - Cornelia Heindl
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Katharina Völker
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Marco Abeßer
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Kathy Pfeiffer
- Medizinisches Proteom-Center, Medical Faculty, Ruhr-University Bochum, Bochum, Germany.,Medical Proteome Analysis, Center for Proteindiagnostics (PRODI), Ruhr-University Bochum, Bochum, Germany
| | - Alice Schaaf
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Katrin Marcus
- Medizinisches Proteom-Center, Medical Faculty, Ruhr-University Bochum, Bochum, Germany.,Medical Proteome Analysis, Center for Proteindiagnostics (PRODI), Ruhr-University Bochum, Bochum, Germany
| | - Petra Eder-Negrin
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Würzburg, Germany.,Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Erick Miranda-Laferte
- Institute of Physiology, University of Würzburg, Würzburg, Germany.,Institut für Biologische Informationsprozesse, Molekular- und Zellphysiologie (IBI-1), Forschungszentrum Jülich, Jülich, Germany
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17
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Saleem A, Awange JL, Kuhn M, John B, Hu K. Impacts of extreme climate on Australia's green cover (2003-2018): A MODIS and mascon probe. Sci Total Environ 2021; 766:142567. [PMID: 33097275 DOI: 10.1016/j.scitotenv.2020.142567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 08/13/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
Australia as a continent represents a semi-arid environment that is generally water-limited. Changes in rainfall pattern will inevitably occur due to rising temperatures caused by climate change, which has a direct impact on the distribution of Australia's vegetation (green cover). As variability in rainfall continues to increase, i.e., in frequency and/or magnitude, due to climate change, extreme climate events such as droughts are predicted to become more pervasive and severe that will have an adverse effect on vegetation. This study investigates the effects of extreme climate on Australia's green cover during 2003-2018 for the end of rainy seasons of April and October in the northern and southern parts, respectively, to (i) determine the state of vegetation and its changes, (ii) identify "hotspots", i.e., regions that constantly experienced statistically significant decrease in NDVI, and (iii), relate changes in the identified hotspots to GRACE-hydrological changes. These are achieved through the exploitation of the statistical tools of Principal Component Analysis (PCA) and Mann-Kendel Test on Gravity Recovery and Climate Experiment (GRACE) hydrological products on the one hand, and the utilization of Australia's rainfall product and Moderate Resolution Imaging Spectroradiometer Normalized Difference Vegetation Index (MODIS-NDVI) used here with its native spatial resolution of 0.002413∘ × 0.002413∘ on the other hand. Differences between 3-year intervals from 2003 to 2018 for both April and October datasets are used to quantify vegetation variations. Through area change analysis, the vegetation differences (2003-2018) indicate that April exhibited larger increase (13.77% of total vegetation area) than decrease (7.83%) compared to October, which experienced slightly larger decrease (9.41%) than increase (8.71%). South Australia and Western Australia emerge as "hotspots" in which vegetation statistically decreased in October, with no noticeable change in April. GRACE-based hydrological changes in both hotspots reflect a decreasing trend (2003-2009) and increasing trend (2009-2012) that peaks in 2011, which then transitions towards a gradually decreasing trend after 2012. Australia-wide climate variability (ENSO and IOD) influenced vegetation variations during the data period 2003 to 2018.
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Affiliation(s)
- A Saleem
- School of Earth and Planetary Science, Spatial Science Discipline, Curtin University, Perth, Australia.
| | - J L Awange
- School of Earth and Planetary Science, Spatial Science Discipline, Curtin University, Perth, Australia; Geodetic Institute, Karlsruhe Institute of Technology, Engler-Strasse 7, D-76131, Karlsruhe, Germany
| | - M Kuhn
- School of Earth and Planetary Science, Spatial Science Discipline, Curtin University, Perth, Australia
| | - B John
- School of Earth and Planetary Science, Spatial Science Discipline, Curtin University, Perth, Australia
| | - K Hu
- School of Earth and Planetary Science, Spatial Science Discipline, Curtin University, Perth, Australia
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18
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Villanueva-Perez P, Fleckenstein H, Prasciolu M, Murray KT, Domaracký M, Gregorič K, Mariani V, Gelisio L, Kuhn M, Hannappel J, Yefanov O, Ivanov N, Sarrou I, Pennicard D, Becker J, von Zimmermann M, Gutowski O, Dippel AC, Chapman HN, Bajt S. Scanning Compton X-ray microscopy. Opt Lett 2021; 46:1920-1923. [PMID: 33857104 DOI: 10.1364/ol.421232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
X-ray microscopy offers the opportunity to image biological and radiosensitive materials without special sample preparations, bridging optical and electron microscopy capabilities. However, the performance of such microscopes, when imaging radiosensitive samples, is not limited by their intrinsic resolution, but by the radiation damage induced on such samples. Here, we demonstrate a novel, to the best of our knowledge, radio-efficient microscope, scanning Compton X-ray microscopy (SCXM), which uses coherently and incoherently (Compton) scattered photons to minimize the deposited energy per unit of mass for a given imaging signal. We implemented SCXM, using lenses capable of efficiently focusing 60 keV X-ray photons into the sub-micrometer scale, and probe its radio-efficient capabilities. SCXM, when implemented in high-energy diffraction-limited storage rings, e.g., European Synchrotron Radiation Facility Extremely Brilliant Source and PETRA IV, will open the opportunity to explore the nanoscale of unstained, unsectioned, and undamaged radiosensitive materials.
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19
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Vornweg J, Gläser S, Ahmad-Anwar M, Zimmer AD, Kuhn M, Hörer S, Korenke GC, Grothaus J, Ott H, Fischer J. Identification of compound heterozygous mutations in AP1B1 leading to the newly described recessive keratitis-ichthyosis-deafness (KIDAR) syndrome. Br J Dermatol 2021; 184:1190-1192. [PMID: 33452671 DOI: 10.1111/bjd.19815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 11/27/2022]
Affiliation(s)
- J Vornweg
- Institute of Human Genetics, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - S Gläser
- Institute of Human Genetics, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - M Ahmad-Anwar
- Institute of Human Genetics, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - A D Zimmer
- Institute of Human Genetics, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - M Kuhn
- Genetikum, Neu-Ulm, Germany
| | - S Hörer
- Institute of Human Genetics, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - G C Korenke
- Department of Pediatric Neurology, Klinikum Oldenburg, Oldenburg, Germany
| | - J Grothaus
- Department of Pediatric Dermatology and Allergology, Center for Epidermolysis Bullosa, Children's Hospital Auf der Bult, Hanover, Germany
| | - H Ott
- Department of Pediatric Dermatology and Allergology, Center for Epidermolysis Bullosa, Children's Hospital Auf der Bult, Hanover, Germany
| | - J Fischer
- Institute of Human Genetics, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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20
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Dietz J, Spengler U, Müllhaupt B, Schulze Zur Wiesch J, Piecha F, Mauss S, Seegers B, Hinrichsen H, Antoni C, Wietzke-Braun P, Peiffer KH, Berger A, Matschenz K, Buggisch P, Backhus J, Zizer E, Boettler T, Neumann-Haefelin C, Semela D, Stauber R, Berg T, Berg C, Zeuzem S, Vermehren J, Sarrazin C, Giostra E, Berning M, Hampe J, De Gottardi A, Rauch A, Semmo N, Discher T, Trauth J, Fischer J, Gress M, Günther R, Heinzow H, Schmidt J, Herrmann A, Stallmach A, Hilgard G, Deterding K, Lange C, Ciesek S, Wedemeyer H, Hoffmann D, Klinker H, Schulze P, Kocheise F, Müller-Schilling M, Kodal A, Kremer A, Ganslmayer M, Siebler J, Lammert F, Rissland J, Löbermann M, Götze T, Canbay A, Lohse A, von Felden J, Jordan S, Maieron A, Moradpour D, Chave JP, Moreno C, Müller T, Muche M, Epple HJ, Port K, von Hahn T, Cornberg M, Manns M, Reinhardt L, Ellenrieder V, Rockstroh J, Schattenberg J, Sprinzl M, Galle P, Roeb E, Steckstor M, Schmiegel W, Brockmeyer N, Seufferlein T, Stremmel W, Strey B, Thimme R, Teufel A, Vogelmann R, Ebert M, Tomasiewicz K, Trautwein C, Tacke F, Koenen T, Weber T, Zachoval R, Mayerle J, Raziorrouh B, Angeli W, Beckebaum S, Doberauer C, Durmashkina E, Hackelsberger A, Erhardt A, Garrido-Lüneburg A, Gattringer H, Genné D, Gschwantler M, Gundling F, Hametner S, Schöfl R, Hartmann C, Heyer T, Hirschi C, Jussios A, Kanzler S, Kordecki N, Kraus M, Kullig U, Wollschläger S, Magenta L, Beretta-Piccoli BT, Menges M, Mohr L, Muehlenberg K, Niederau C, Paulweber B, Petrides A, Pinkernell M, Piso R, Rambach W, Reiser M, Riecken B, Rieke A, Roth J, Schelling M, Schlee P, Schneider A, Scholz D, Schott E, Schuchmann M, Schulten-Baumer U, Seelhoff A, Stich A, Stickel F, Ungemach J, Walter E, Weber A, Winzer T, Abels W, Adler M, Audebert F, Baermann C, Bästlein E, Barth R, Barthel K, Becker W, Behrends J, Benninger J, Berger F, Berzow D, Beyer T, Bierbaum M, Blaukat O, Bodtländer A, Böhm G, Börner N, Bohr U, Bokemeyer B, Bruch H, Bucholz D, Burkhard O, Busch N, Chirca C, Delker R, Diedrich J, Frank M, Diehl M, Dienethal A, Dietel P, Dikopoulos N, Dreck M, Dreher F, Drude L, Ende K, Ehrle U, Baumgartl K, Emke F, Glosemeyer R, Felten G, Hüppe D, Fischer J, Fischer U, Frederking D, Frick B, Friese G, Gantke B, Geyer P, Schwind H, Glas M, Glaunsinger T, Goebel F, Göbel U, Görlitz B, Graf R, Gruber H, Härter G, Herder M, Heuchel T, Heuer S, Höffl KH, Hörster H, Sonne JU, Hofmann W, Holst F, Hunstiger M, Hurst A, Jägel-Guedes E, John C, Jung M, Kallinowski B, Kapzan B, Kerzel W, Khaykin P, Klarhof M, Klüppelberg U, Klugewitz K, Knapp B, Knevels U, Kochsiek T, Körfer A, Köster A, Kuhn M, Langekamp A, Künzig B, Link R, Littman M, Löhr H, Lutz T, Knecht G, Lutz U, Mainz D, Mahle I, Maurer P, Mayer C, Meister V, Möller H, Heyne R, Moritzen D, Mroß M, Mundlos M, Naumann U, Nehls O, Ningel K, Oelmann A, Olejnik H, Gadow K, Pascher E, Petersen J, Philipp A, Pichler M, Polzien F, Raddant R, Riedel M, Rietzler S, Rössle M, Rufle W, Rump A, Schewe C, Hoffmann C, Schleehauf D, Schmidt K, Schmidt W, Schmidt-Heinevetter G, Schmidtler-von Fabris J, Schnaitmann E, Schneider L, Schober A, Niehaus-Hahn S, Schwenzer J, Seidel T, Seitel G, Sick C, Simon K, Stähler D, Stenschke F, Steffens H, Stein K, Steinmüller M, Sternfeld T, Strey B, Svensson K, Tacke W, Teuber G, Teubner K, Thieringer J, Tomesch A, Trappe U, Ullrich J, Urban G, Usadel S, von Lucadou A, Weinberger F, Werheid-Dobers M, Werner P, Winter T, Zehnter E, Zipf A. Efficacy of Retreatment After Failed Direct-acting Antiviral Therapy in Patients With HCV Genotype 1-3 Infections. Clin Gastroenterol Hepatol 2021; 19:195-198.e2. [PMID: 31706062 DOI: 10.1016/j.cgh.2019.10.051] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 09/19/2019] [Accepted: 10/25/2019] [Indexed: 02/07/2023]
Abstract
Hepatitis C virus infection is causing chronic liver disease, cirrhosis, and hepatocellular carcinoma. By combining direct-acting antivirals (DAAs), high sustained virologic response rates (SVRs) can be achieved. Resistance-associated substitutions (RASs) are commonly observed after DAA failure, and especially nonstructural protein 5A (NS5A) RASs may impact retreatment options.1-3 Data on retreatment of DAA failure patients using first-generation DAAs are limited.4-7 Recently, a second-generation protease- and NS5A-inhibitor plus sofosbuvir (voxilaprevir/velpatasvir/sofosbuvir [VOX/VEL/SOF]) was approved for retreatment after DAA failure.8 However, this and other second-generation regimens are not available in many resource-limited countries or are not reimbursed by regular insurance, and recommendations regarding the selection of retreatment regimens using first-generation DAAs are very important. This study aimed to analyze patients who were re-treated with first-generation DAAs after failure of a DAA combination therapy.
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Affiliation(s)
- Julia Dietz
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany
| | - Ulrich Spengler
- Department of Internal Medicine I, University of Bonn, Bonn, and German Center for Infection Research (DZIF), Partner Site, Cologne-Bonn, Germany
| | - Beat Müllhaupt
- Swiss Hepato-Pancreato-Biliary Center and Department of Gastroenterology and Hepatology, University Hospital Zürich, Zürich, Switzerland
| | - Julian Schulze Zur Wiesch
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, and German Center for Infection Research (DZIF), Partner Site, Hamburg-Lübeck-Borstel-Riems, Germany
| | - Felix Piecha
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, and German Center for Infection Research (DZIF), Partner Site, Hamburg-Lübeck-Borstel-Riems, Germany
| | - Stefan Mauss
- Center for HIV and Hepatogastroenterology, Düsseldorf, Germany
| | - Barbara Seegers
- Gastroenterologisch-Hepatologisches Zentrum Kiel, Kiel, Germany
| | | | - Christoph Antoni
- Department of Internal Medicine II, University Hospital Mannheim, Mannheim, Germany
| | | | - Kai-Henrik Peiffer
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany
| | - Annemarie Berger
- Institute for Medical Virology, University Hospital Frankfurt, Frankfurt, Germany
| | | | - Peter Buggisch
- Institute for Interdisciplinary Medicine IFI, Hamburg, Germany
| | - Johanna Backhus
- Department of Internal Medicine I, Ulm University, Ulm, Germany
| | - Eugen Zizer
- Department of Internal Medicine I, Ulm University, Ulm, Germany
| | - Tobias Boettler
- Department of Medicine II, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph Neumann-Haefelin
- Department of Medicine II, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - David Semela
- Division of Gastroenterology and Hepatology, Kantonsspital St Gallen, St Gallen, Switzerland
| | - Rudolf Stauber
- Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Thomas Berg
- Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Christoph Berg
- Department of Internal Medicine I, University of Tübingen, Tübingen, Germany
| | - Stefan Zeuzem
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany
| | - Johannes Vermehren
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany
| | - Christoph Sarrazin
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany; Medizinische Klinik 2, St Josefs-Hospital, Wiesbaden, Germany.
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21
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Michel K, Herwig M, Werner F, Špiranec Spes K, Abeßer M, Schuh K, Dabral S, Mügge A, Baba HA, Skryabin BV, Hamdani N, Kuhn M. C-type natriuretic peptide moderates titin-based cardiomyocyte stiffness. JCI Insight 2020; 5:139910. [PMID: 33055420 PMCID: PMC7710274 DOI: 10.1172/jci.insight.139910] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 10/09/2020] [Indexed: 12/11/2022] Open
Abstract
Heart failure is often accompanied by titin-dependent myocardial stiffness. Phosphorylation of titin by cGMP-dependent protein kinase I (PKGI) increases cardiomyocyte distensibility. The upstream pathways stimulating PKGI-mediated titin phosphorylation are unclear. We studied whether C-type natriuretic peptide (CNP), via its guanylyl cyclase-B (GC-B) receptor and cGMP/PKGI signaling, modulates titin-based ventricular compliance. To dissect GC-B–mediated effects of endogenous CNP in cardiomyocytes, we generated mice with cardiomyocyte-restricted GC-B deletion (CM GC-B–KO mice). The impact on heart morphology and function, myocyte passive tension, and titin isoform expression and phosphorylation was studied at baseline and after increased afterload induced by transverse aortic constriction (TAC). Pressure overload increased left ventricular endothelial CNP expression, with an early peak after 3 days. Concomitantly, titin phosphorylation at Ser4080, the site phosphorylated by PKGI, was augmented. Notably, in CM GC-B–KO mice this titin response was abolished. TAC-induced hypertrophy and fibrosis were not different between genotypes. However, the KO mice presented mild systolic and diastolic dysfunction together with myocyte stiffness, which were not observed in control littermates. In vitro, recombinant PKGI rescued reduced titin-Ser4080 phosphorylation and reverted passive stiffness of GC-B–deficient cardiomyocytes. CNP-induced activation of GC-B/cGMP/PKGI signaling in cardiomyocytes provides a protecting regulatory circuit preventing titin-based myocyte stiffening during early phases of pressure overload. C-type natriuretic peptide via GC-B/cGMP/PKGI signalling in cardiomyocytes attenuates titin-based cardiomyocyte stiffening during early phases of pressure-overload.
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Affiliation(s)
- Konstanze Michel
- Institute of Physiology, University of Würzburg, Würzburg, Germany.,Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Melissa Herwig
- Institute of Physiology and.,Department of Cardiology, St-Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | - Franziska Werner
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | | | - Marco Abeßer
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Kai Schuh
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Swati Dabral
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Andreas Mügge
- Department of Cardiology, St-Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | - Hideo A Baba
- Institute of Pathology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Boris V Skryabin
- Medical Faculty, Core Facility TRAnsgenic animal and genetic engineering Models (TRAM), University of Münster, Münster, Germany
| | - Nazha Hamdani
- Institute of Physiology and.,Department of Cardiology, St-Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Würzburg, Germany.,Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
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22
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Špiranec Spes K, Chen W, Krebes L, Völker K, Abeßer M, Eder Negrin P, Cellini A, Nickel A, Nikolaev VO, Hofmann F, Schuh K, Schweda F, Kuhn M. Heart-Microcirculation Connection: Effects of ANP (Atrial Natriuretic Peptide) on Pericytes Participate in the Acute and Chronic Regulation of Arterial Blood Pressure. Hypertension 2020; 76:1637-1648. [PMID: 32951468 DOI: 10.1161/hypertensionaha.120.15772] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cardiac ANP (atrial natriuretic peptide) moderates arterial blood pressure. The mechanisms mediating its hypotensive effects are complex and involve inhibition of the renin-angiotensin-aldosterone system, increased natriuresis, endothelial permeability, and vasodilatation. The contribution of the direct vasodilating effects of ANP to blood pressure homeostasis is controversial because variable levels of the ANP receptor, GC-A (guanylyl cyclase-A), are expressed among vascular beds. Here, we show that ANP stimulates GC-A/cyclic GMP signaling in cultured microvascular pericytes and thereby the phosphorylation of the regulatory subunit of myosin phosphatase 1 by cGMP-dependent protein kinase I. Moreover, ANP prevents the calcium and contractile responses of pericytes to endothelin-1 as well as microvascular constrictions. In mice with conditional inactivation (knock-out) of GC-A in microcirculatory pericytes, such vasodilating effects of ANP on precapillary arterioles and capillaries were fully abolished. Concordantly, these mice have increased blood pressure despite preserved renal excretory function. Furthermore, acute intravascular volume expansion, which caused release of cardiac ANP, did not affect blood pressure of control mice but provoked hypertensive reactions in pericyte GC-A knock-out littermates. We conclude that GC-A/cGMP-dependent modulation of pericytes and microcirculatory tone contributes to the acute and chronic moderation of arterial blood pressure by ANP. Graphic Abstract A graphic abstract is available for this article.
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Affiliation(s)
- Katarina Špiranec Spes
- From the Institute of Physiology, University of Würzburg (K.S.S., W.C., L.K., K.V., M.A., K.S., M.K.), University Hospital Würzburg, Germany.,Comprehensive Heart Failure Center (K.S.S., W.C., P.E.N., A.C., A.N., M.K.), University Hospital Würzburg, Germany
| | - Wen Chen
- From the Institute of Physiology, University of Würzburg (K.S.S., W.C., L.K., K.V., M.A., K.S., M.K.), University Hospital Würzburg, Germany.,Comprehensive Heart Failure Center (K.S.S., W.C., P.E.N., A.C., A.N., M.K.), University Hospital Würzburg, Germany.,The Affiliated Haimen Hospital, Nantong University, Jiangsu, China (W.C.)
| | - Lisa Krebes
- From the Institute of Physiology, University of Würzburg (K.S.S., W.C., L.K., K.V., M.A., K.S., M.K.), University Hospital Würzburg, Germany
| | - Katharina Völker
- From the Institute of Physiology, University of Würzburg (K.S.S., W.C., L.K., K.V., M.A., K.S., M.K.), University Hospital Würzburg, Germany
| | - Marco Abeßer
- From the Institute of Physiology, University of Würzburg (K.S.S., W.C., L.K., K.V., M.A., K.S., M.K.), University Hospital Würzburg, Germany
| | - Petra Eder Negrin
- Comprehensive Heart Failure Center (K.S.S., W.C., P.E.N., A.C., A.N., M.K.), University Hospital Würzburg, Germany
| | - Antonella Cellini
- Comprehensive Heart Failure Center (K.S.S., W.C., P.E.N., A.C., A.N., M.K.), University Hospital Würzburg, Germany
| | - Alexander Nickel
- Comprehensive Heart Failure Center (K.S.S., W.C., P.E.N., A.C., A.N., M.K.), University Hospital Würzburg, Germany
| | - Viacheslav O Nikolaev
- Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Germany (V.O.N.)
| | - Franz Hofmann
- Institute of Pharmacology and Toxicology, TU Munich, Germany (F.H.)
| | - Kai Schuh
- From the Institute of Physiology, University of Würzburg (K.S.S., W.C., L.K., K.V., M.A., K.S., M.K.), University Hospital Würzburg, Germany
| | - Frank Schweda
- Institute of Physiology, University of Regensburg, Germany (F.S.)
| | - Michaela Kuhn
- From the Institute of Physiology, University of Würzburg (K.S.S., W.C., L.K., K.V., M.A., K.S., M.K.), University Hospital Würzburg, Germany
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23
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Lauffer P, Miranda-Laferte E, van Duyvenvoorde HA, van Haeringen A, Werner F, Boudin E, Schmidt H, Mueller TD, Kuhn M, van der Kaay DCM. An Activating Deletion Variant in the Submembrane Region of Natriuretic Peptide Receptor-B Causes Tall Stature. J Clin Endocrinol Metab 2020; 105:5819532. [PMID: 32282051 PMCID: PMC7450217 DOI: 10.1210/clinem/dgaa190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/10/2020] [Indexed: 12/30/2022]
Abstract
CONTEXT C-type natriuretic peptide (CNP) is critically involved in endochondral bone growth. Variants in the genes encoding CNP or its cyclic guanosine monophosphate (cGMP)-forming receptor (natriuretic peptide receptor-B [NPR-B], gene NPR2) cause monogenic growth disorders. Here we describe a novel gain-of-function variant of NPR-B associated with tall stature and macrodactyly of the great toes (epiphyseal chondrodysplasia, Miura type). DESIGN History and clinical characteristics of 3 family members were collected. NPR2 was selected for sequencing. Skin fibroblasts and transfected HEK-293 cells were used to compare mutant versus wild-type NPR-B activities. Homology modeling was applied to understand the molecular consequences of the variant. RESULTS Mother's height was +2.77 standard deviation scores (SDS). The heights of her 2 daughters were +1.96 SDS at 7 years and +1.30 SDS at 4 years of age. Skeletal surveys showed macrodactyly of the great toes and pseudo-epiphyses of the mid- and proximal phalanges. Sequencing identified a novel heterozygous variant c.1444_1449delATGCTG in exon 8 of NPR2, predicted to result in deletion of 2 amino acids Met482-Leu483 within the submembrane region of NPR-B. In proband's skin fibroblasts, basal cGMP levels and CNP-stimulated cGMP production were markedly increased compared with controls. Consistently, assays with transfected HEK-293 cells showed markedly augmented baseline and ligand-dependent activity of mutant NPR-B. CONCLUSIONS We report the second activating variant within the intracellular submembrane region of NPR-B resulting in tall stature and macrodactyly. Our functional and modeling studies suggest that this domain plays a critical role in the baseline conformation and ligand-dependent structural rearrangement of NPR-B required for cGMP production.
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Affiliation(s)
- Peter Lauffer
- Department of Clinical Genetics, Leiden University Medical Center, ZA Leiden, the Netherlands
- Department of Paediatric Endocrinology, Emma Children’s Hospital, Amsterdam University Medical Center, AZ Amsterdam, the Netherlands
- Correspondence and Reprint Requests: Peter Lauffer, Emma Children’s Hospital, Amsterdam University Medical Center, Department of Paediatric Endocrinology, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands. E-mail:
| | | | | | - Arie van Haeringen
- Department of Clinical Genetics, Leiden University Medical Center, ZA Leiden, the Netherlands
| | - Franziska Werner
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Eveline Boudin
- Centre of Medical Genetics, University of Antwerp, Edegem, Belgium
| | - Hannes Schmidt
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Thomas D Mueller
- Department of Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Biocenter, University of Würzburg, Würzburg, Germany
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Würzburg, Germany
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24
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Beuve A, Brouckaert P, Burnett, Jr. JC, Friebe A, Garthwaite J, Hobbs AJ, Koesling D, Kuhn M, Potter LR, Russwurm M, Schmidt HH, Stasch JP, Waldman SA. Receptor guanylyl cyclase (RGC) family (version 2020.3) in the IUPHAR/BPS Guide to Pharmacology Database. ACTA ACUST UNITED AC 2020. [DOI: 10.2218/gtopdb/f1022/2020.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mammalian genome encodes seven guanylyl cyclases, GC-A to GC-G, that are homodimeric transmembrane receptors activated by a diverse range of endogenous ligands. These enzymes convert guanosine-5'-triphosphate to the intracellular second messenger cyclic guanosine-3',5'-monophosphate (cyclic GMP). GC-A, GC-B and GC-C are expressed predominantly in the cardiovascular system, skeletal system and intestinal epithelium, respectively. GC-D and GC-G are found in the olfactory neuropepithelium and Grueneberg ganglion of rodents, respectively. GC-E and GC-F are expressed in retinal photoreceptors.
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25
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Marchetta P, Möhrle D, Eckert P, Reimann K, Wolter S, Tolone A, Lang I, Wolters M, Feil R, Engel J, Paquet-Durand F, Kuhn M, Knipper M, Rüttiger L. Guanylyl Cyclase A/cGMP Signaling Slows Hidden, Age- and Acoustic Trauma-Induced Hearing Loss. Front Aging Neurosci 2020; 12:83. [PMID: 32327991 PMCID: PMC7160671 DOI: 10.3389/fnagi.2020.00083] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 03/10/2020] [Indexed: 12/24/2022] Open
Abstract
In the inner ear, cyclic guanosine monophosphate (cGMP) signaling has been described as facilitating otoprotection, which was previously observed through elevated cGMP levels achieved by phosphodiesterase 5 inhibition. However, to date, the upstream guanylyl cyclase (GC) subtype eliciting cGMP production is unknown. Here, we show that mice with a genetic disruption of the gene encoding the cGMP generator GC-A, the receptor for atrial and B-type natriuretic peptides, display a greater vulnerability of hair cells to hidden hearing loss and noise- and age-dependent hearing loss. This vulnerability was associated with GC-A expression in spiral ganglia and outer hair cells (OHCs) but not in inner hair cells (IHCs). GC-A knockout mice exhibited elevated hearing thresholds, most pronounced for the detection of high-frequency tones. Deficits in OHC input–output functions in high-frequency regions were already present in young GC-A-deficient mice, with no signs of an accelerated progression of age-related hearing loss or higher vulnerability to acoustic trauma. OHCs in these frequency regions in young GC-A knockout mice exhibited diminished levels of KCNQ4 expression, which is the dominant K+ channel in OHCs, and decreased activation of poly (ADP-ribose) polymerase-1, an enzyme involved in DNA repair. Further, GC-A knockout mice had IHC synapse impairments and reduced amplitudes of auditory brainstem responses that progressed with age and with acoustic trauma, in contrast to OHCs, when compared to GC-A wild-type littermates. We conclude that GC-A/cGMP-dependent signaling pathways have otoprotective functions and GC-A gene disruption differentially contributes to hair-cell damage in a healthy, aged, or injured system. Thus, augmentation of natriuretic peptide GC-A signaling likely has potential to overcome hidden and noise-induced hearing loss, as well as presbycusis.
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Affiliation(s)
- Philine Marchetta
- Molecular Physiology of Hearing, Tübingen Hearing Research Centre, Department of Otolaryngology, University of Tübingen, Tübingen, Germany
| | - Dorit Möhrle
- Molecular Physiology of Hearing, Tübingen Hearing Research Centre, Department of Otolaryngology, University of Tübingen, Tübingen, Germany.,Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Philipp Eckert
- Molecular Physiology of Hearing, Tübingen Hearing Research Centre, Department of Otolaryngology, University of Tübingen, Tübingen, Germany
| | - Katrin Reimann
- Molecular Physiology of Hearing, Tübingen Hearing Research Centre, Department of Otolaryngology, University of Tübingen, Tübingen, Germany
| | - Steffen Wolter
- Molecular Physiology of Hearing, Tübingen Hearing Research Centre, Department of Otolaryngology, University of Tübingen, Tübingen, Germany
| | - Arianna Tolone
- Cell Death Mechanisms Group, Institute for Ophthalmic Research, Centre for Ophthalmology, University of Tübingen, Tübingen, Germany
| | - Isabelle Lang
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, Hearing Research, Saarland University, Homburg, Germany
| | - Markus Wolters
- Signal Transduction and Transgenic Models, Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Robert Feil
- Signal Transduction and Transgenic Models, Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Jutta Engel
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, Hearing Research, Saarland University, Homburg, Germany
| | - François Paquet-Durand
- Cell Death Mechanisms Group, Institute for Ophthalmic Research, Centre for Ophthalmology, University of Tübingen, Tübingen, Germany
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Marlies Knipper
- Molecular Physiology of Hearing, Tübingen Hearing Research Centre, Department of Otolaryngology, University of Tübingen, Tübingen, Germany
| | - Lukas Rüttiger
- Molecular Physiology of Hearing, Tübingen Hearing Research Centre, Department of Otolaryngology, University of Tübingen, Tübingen, Germany
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26
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Chen W, Werner F, Illerhaus A, Knopp T, Völker K, Potapenko T, Hofmann U, Frantz S, Baba HA, Rösch M, Zernecke A, Karbach S, Wenzel P, Kuhn M. Stabilization of Perivascular Mast Cells by Endothelial CNP (C-Type Natriuretic Peptide). Arterioscler Thromb Vasc Biol 2020; 40:682-696. [PMID: 31893950 DOI: 10.1161/atvbaha.119.313702] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Activated perivascular mast cells (MCs) participate in different cardiovascular diseases. Many factors provoking MC degranulation have been described, while physiological counterregulators are barely known. Endothelial CNP (C-type natriuretic peptide) participates in the maintenance of vascular barrier integrity, but the target cells and mechanisms are unclear. Here, we studied whether MCs are regulated by CNP. Approach and Results: In cultured human and murine MCs, CNP activated its specific GC (guanylyl cyclase)-B receptor and cyclic GMP signaling. This enhanced cyclic GMP-dependent phosphorylation of the cytoskeleton-associated VASP (vasodilator-stimulated phosphoprotein) and inhibited ATP-evoked degranulation. To elucidate the relevance in vivo, mice with a floxed GC-B (Npr2) gene were interbred with a Mcpt5-CreTG line to generate mice lacking GC-B in connective tissue MCs (MC GC-B knockout). In anesthetized mice, acute ischemia-reperfusion of the cremaster muscle microcirculation provoked extensive MC degranulation and macromolecule extravasation. Superfusion of CNP markedly prevented MC activation and endothelial barrier disruption in control but not in MC GC-B knockout mice. Notably, already under resting conditions, such knockout mice had increased numbers of degranulated MCs in different tissues, together with elevated plasma chymase levels. After transient coronary occlusion, their myocardial areas at risk and with infarction were enlarged. Moreover, MC GC-B knockout mice showed augmented perivascular neutrophil infiltration and deep vein thrombosis in a model of inferior vena cava ligation. CONCLUSIONS CNP, via GC-B/cyclic GMP signaling, stabilizes resident perivascular MCs at baseline and prevents their excessive activation under pathological conditions. Thereby CNP contributes to the maintenance of vascular integrity in physiology and disease.
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Affiliation(s)
- Wen Chen
- From the Institute of Physiology, University of Würzburg, Germany (W.C., F.W., K.V., T.P., M.K.).,Comprehensive Heart Failure Center (W.C., U.H., S.F., M.K.), University Hospital Würzburg, Germany
| | - Franziska Werner
- From the Institute of Physiology, University of Würzburg, Germany (W.C., F.W., K.V., T.P., M.K.)
| | - Anja Illerhaus
- Institute of Experimental Biomedicine (M.R., A.Z.), University Hospital Würzburg, Germany
| | - Tanja Knopp
- Department of Dermatology, University of Cologne, Germany (A.I.)
| | - Katharina Völker
- From the Institute of Physiology, University of Würzburg, Germany (W.C., F.W., K.V., T.P., M.K.)
| | - Tamara Potapenko
- From the Institute of Physiology, University of Würzburg, Germany (W.C., F.W., K.V., T.P., M.K.)
| | - Ulrich Hofmann
- Comprehensive Heart Failure Center (W.C., U.H., S.F., M.K.), University Hospital Würzburg, Germany
| | - Stefan Frantz
- Comprehensive Heart Failure Center (W.C., U.H., S.F., M.K.), University Hospital Würzburg, Germany
| | - Hideo A Baba
- Center of Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Germany (T.K., S.K., P.W.)
| | - Melanie Rösch
- Institute of Experimental Biomedicine (M.R., A.Z.), University Hospital Würzburg, Germany
| | - Alma Zernecke
- Institute of Experimental Biomedicine (M.R., A.Z.), University Hospital Würzburg, Germany
| | - Susanne Karbach
- Department of Dermatology, University of Cologne, Germany (A.I.).,Institute of Pathology, University Hospital Essen, University Duisburg-Essen (H.A.B.)
| | - Philip Wenzel
- Department of Dermatology, University of Cologne, Germany (A.I.).,Institute of Pathology, University Hospital Essen, University Duisburg-Essen (H.A.B.)
| | - Michaela Kuhn
- From the Institute of Physiology, University of Würzburg, Germany (W.C., F.W., K.V., T.P., M.K.).,Comprehensive Heart Failure Center (W.C., U.H., S.F., M.K.), University Hospital Würzburg, Germany
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27
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Hu KX, Awange JL, Kuhn M, Saleem A. Spatio-temporal groundwater variations associated with climatic and anthropogenic impacts in South-West Western Australia. Sci Total Environ 2019; 696:133599. [PMID: 31461690 DOI: 10.1016/j.scitotenv.2019.133599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/24/2019] [Accepted: 07/24/2019] [Indexed: 06/10/2023]
Abstract
South-West Western Australia (SWWA) is a critical agricultural region that heavily relies on groundwater for domestic, agricultural and industrial use. However, the behaviours of groundwater associated with climate variability/change and anthropogenic impacts within this region are not well understood. This study investigates the spatio-temporal variability of groundwater in SWWA based on 2997 boreholes over the past 36 years (1980-2015). Results identify the decline in groundwater level (13 mm/month) located in the central coastal region of SWWA (i.e., north and south of Perth) to be caused by anthropogenic impacts (primary factor) and climate variability/change (secondary). In detail, anthropogenic impacts are mainly attributed to substantial groundwater abstraction, e.g., hotspots (identified by above 7 m/month groundwater level change) mostly occur in the central coastal region, as well as close to dams and mines. Impacts of climate variability/change indicate that coupled ENSO and positive IOD cause low-level rainfall in the coastal regions, subsequently, affecting groundwater recharge. In addition, correlation between groundwater and rainfall is significant at 0.748 over entire SWWA (at 95% confidence level). However, groundwater in northeastern mountainous regions hardly changes with rainfall because of very small amounts of rainfall (average 20-30 mm/month) in this region, potentially coupled with terrain and geological impacts. A marked division for groundwater bounded by the Darling and Gingin Scarps is found. This is likely due to the effects of the Darling fault, dams, central mountainous terrain and geology. For the region south of Perth and southern coastal regions, a hypothesis through multi-year analysis is postulated that rainfall of at least 60 and 65-70 mm/month, respectively, are required during the March-October rainfall period to recharge groundwater.
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Affiliation(s)
- K X Hu
- School of Earth and Planetary, Spatial Science Discipline, Curtin University, Perth, Australia.
| | - J L Awange
- School of Earth and Planetary, Spatial Science Discipline, Curtin University, Perth, Australia; Geodetic Institute, Karlsruhe Institute of Technology, Engler-Strasse 7, D-76131 Karlsruhe, Germany
| | - M Kuhn
- School of Earth and Planetary, Spatial Science Discipline, Curtin University, Perth, Australia
| | - A Saleem
- School of Earth and Planetary, Spatial Science Discipline, Curtin University, Perth, Australia
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28
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Agutu NO, Awange JL, Ndehedehe C, Kirimi F, Kuhn M. GRACE-derived groundwater changes over Greater Horn of Africa: Temporal variability and the potential for irrigated agriculture. Sci Total Environ 2019; 693:133467. [PMID: 31634997 DOI: 10.1016/j.scitotenv.2019.07.273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 06/24/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
Greater Horn of Africa (GHA) is projected to face negative impacts on per capita food production due to dwindling nature of water resources forced by climate change and rising population growth. The region has limited groundwater irrigated agriculture and also lacks groundwater monitoring infrastructure. This study (i) employs Independent Component Analysis (ICA) to localize Gravity Recovery and Climate Experiment (GRACE)-derived groundwater changes and analyses the corresponding temporal variabilities and their link to climate indices (Indian Ocean Dipole (IOD) and El Niño-Southern Oscillation (ENSO)), and (ii), explores the irrigation potentials of the localized groundwater. Monthly GRACE-derived groundwater changes showed similar temporal variability to WaterGap Hydrological Model (WGHM), i.e., a correlation of 0.7 (significant at 95% confidence level), highlighting GRACE's potential to provide GHA-wide changes in groundwater. Based on GHA aquifer location maps, the study associated the localized groundwater changes to nine major aquifers namely; Nubian sandstone, Karoo Carbonate, Upper Nile, Ethiopian highlands, Lake Tana region, Kenya-Somalia, Central Tanzania, Karoo sandstone, and Ruvuma. All temporal groundwater changes, except Nubian sandstone and Kenya-Somalia, showed an annual (cyclic) pattern indicating an annual (yearly) recharge cycle. Weak relationships with rainfall and both climate indices were noted. Maximum correlation occurred when rainfall preceded the temporal groundwater changes by several months. Based on water availability (from GRACE), water quality (indicated by the total dissolved substance) and dominant soil types, potential for groundwater irrigated agriculture results showed: low potentials for Nubian Sandstone and Kenya-Somalia areas; low to moderate potentials for Karoo Carbonate, Lake Tana region, central Tanzania, and Ruvuma; moderate to high potentials for Upper Nile and Karoo Sandstone; and high potential for Ethiopian highland. Even though the study has considered relatively short time period (10 years), these results are critical to the sustainable management of the region's groundwater resources and appropriate/informed policy formulation.
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Affiliation(s)
- N O Agutu
- School of Earth and Planetary Sciences, Spatial Sciences, Curtin University, Perth, Australia; Department of Geomatic Engineering and Geospatial Information Systems, JKUAT, Nairobi, Kenya.
| | - J L Awange
- School of Earth and Planetary Sciences, Spatial Sciences, Curtin University, Perth, Australia; Geodetic Institute, Karlsruhe Institute of Technology, Engler-Strasse 7, D-76131 Karlsruhe, Germany
| | - C Ndehedehe
- School of Earth and Planetary Sciences, Spatial Sciences, Curtin University, Perth, Australia; Australian Rivers Institute and Griffith School of Environment & Science, Griffith University, Nathan, Queensland 4111, Australia
| | - F Kirimi
- Department of Geomatic Engineering and Geospatial Information Systems, JKUAT, Nairobi, Kenya
| | - M Kuhn
- School of Earth and Planetary Sciences, Spatial Sciences, Curtin University, Perth, Australia
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29
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Špiranec Spes K, Hupp S, Werner F, Koch F, Völker K, Krebes L, Kämmerer U, Heinze KG, Braunger BM, Kuhn M. Natriuretic Peptides Attenuate Retinal Pathological Neovascularization Via Cyclic Guanosine Monophosphate Signaling in Pericytes and Astrocytes. Arterioscler Thromb Vasc Biol 2019; 40:159-174. [PMID: 31619060 DOI: 10.1161/atvbaha.119.313400] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE In proliferative retinopathies, complications derived from neovascularization cause blindness. During early disease, pericyte's apoptosis contributes to endothelial dysfunction and leakage. Hypoxia then drives VEGF (vascular endothelial growth factor) secretion and pathological neoangiogenesis. Cardiac ANP (atrial natriuretic peptide) contributes to systemic microcirculatory homeostasis. ANP is also formed in the retina, with unclear functions. Here, we characterized whether endogenously formed ANP regulates retinal (neo)angiogenesis. Approach and Results: Retinal vascular development and ischemia-driven neovascularization were studied in mice with global deletion of GC-A (guanylyl cyclase-A), the cGMP (cyclic guanosine monophosphate)-forming ANP receptor. Mice with a floxed GC-A gene were interbred with Tie2-Cre, GFAP-Cre, or PDGF-Rβ-CreERT2 lines to dissect the endothelial, astrocyte versus pericyte-mediated actions of ANP in vivo. In neonates with global GC-A deletion (KO), vascular development was mildly delayed. Moreover, such KO mice showed augmented vascular regression and exacerbated ischemia-driven neovascularization in the model of oxygen-induced retinopathy. Notably, absence of GC-A in endothelial cells did not impact retinal vascular development or pathological neovascularization. In vitro ANP/GC-A/cGMP signaling, via activation of cGMP-dependent protein kinase I, inhibited hypoxia-driven astrocyte's VEGF secretion and TGF-β (transforming growth factor beta)-induced pericyte apoptosis. In neonates lacking ANP/GC-A signaling in astrocytes, vascular development and hyperoxia-driven vascular regression were unaltered; ischemia-induced neovascularization was modestly increased. Remarkably, inactivation of GC-A in pericytes retarded physiological retinal vascularization and markedly enhanced cell apoptosis, vascular regression, and subsequent neovascularization in oxygen-induced retinopathy. CONCLUSIONS Protective pericyte effects of the ANP/GC-A/cGMP pathway counterregulate the initiation and progression of experimental proliferative retinopathy. Our observations indicate augmentation of endogenous pericyte ANP signaling as target for treatment of retinopathies associated with neovascularization.
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Affiliation(s)
- Katarina Špiranec Spes
- From the Institute of Physiology, University of Würzburg (K.Š.S, S.H., F.W., F.K., K.V., L.K., M.K.).,Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K.Š.S., M.K.)
| | - Sabrina Hupp
- From the Institute of Physiology, University of Würzburg (K.Š.S, S.H., F.W., F.K., K.V., L.K., M.K.)
| | - Franziska Werner
- From the Institute of Physiology, University of Würzburg (K.Š.S, S.H., F.W., F.K., K.V., L.K., M.K.)
| | - Franziska Koch
- From the Institute of Physiology, University of Würzburg (K.Š.S, S.H., F.W., F.K., K.V., L.K., M.K.)
| | - Katharina Völker
- From the Institute of Physiology, University of Würzburg (K.Š.S, S.H., F.W., F.K., K.V., L.K., M.K.)
| | - Lisa Krebes
- From the Institute of Physiology, University of Würzburg (K.Š.S, S.H., F.W., F.K., K.V., L.K., M.K.)
| | - Ulrike Kämmerer
- Department for Gynecology and Obstetrics, University Hospital Würzburg, Germany (U.K.)
| | - Katrin G Heinze
- Rudolf-Virchow Center for Experimental Biomedicine, University of Würzburg, Germany (K.G.H)
| | - Barbara M Braunger
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University of Würzburg, Germany (B.M.B)
| | - Michaela Kuhn
- From the Institute of Physiology, University of Würzburg (K.Š.S, S.H., F.W., F.K., K.V., L.K., M.K.).,Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K.Š.S., M.K.)
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30
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Špiranec K, Chen W, Werner F, Nikolaev VO, Naruke T, Koch F, Werner A, Eder-Negrin P, Diéguez-Hurtado R, Adams RH, Baba HA, Schmidt H, Schuh K, Skryabin BV, Movahedi K, Schweda F, Kuhn M. Endothelial C-Type Natriuretic Peptide Acts on Pericytes to Regulate Microcirculatory Flow and Blood Pressure. Circulation 2019; 138:494-508. [PMID: 29626067 DOI: 10.1161/circulationaha.117.033383] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Peripheral vascular resistance has a major impact on arterial blood pressure levels. Endothelial C-type natriuretic peptide (CNP) participates in the local regulation of vascular tone, but the target cells remain controversial. The cGMP-producing guanylyl cyclase-B (GC-B) receptor for CNP is expressed in vascular smooth muscle cells (SMCs). However, whereas endothelial cell-specific CNP knockout mice are hypertensive, mice with deletion of GC-B in vascular SMCs have unaltered blood pressure. METHODS We analyzed whether the vasodilating response to CNP changes along the vascular tree, ie, whether the GC-B receptor is expressed in microvascular types of cells. Mice with a floxed GC-B ( Npr2) gene were interbred with Tie2-Cre or PDGF-Rβ-Cre ERT2 lines to develop mice lacking GC-B in endothelial cells or in precapillary arteriolar SMCs and capillary pericytes. Intravital microscopy, invasive and noninvasive hemodynamics, fluorescence energy transfer studies of pericyte cAMP levels in situ, and renal physiology were combined to dissect whether and how CNP/GC-B/cGMP signaling modulates microcirculatory tone and blood pressure. RESULTS Intravital microscopy studies revealed that the vasodilatatory effect of CNP increases toward small-diameter arterioles and capillaries. CNP consistently did not prevent endothelin-1-induced acute constrictions of proximal arterioles, but fully reversed endothelin effects in precapillary arterioles and capillaries. Here, the GC-B receptor is expressed both in endothelial and mural cells, ie, in pericytes. It is notable that the vasodilatatory effects of CNP were preserved in mice with endothelial GC-B deletion, but abolished in mice lacking GC-B in microcirculatory SMCs and pericytes. CNP, via GC-B/cGMP signaling, modulates 2 signaling cascades in pericytes: it activates cGMP-dependent protein kinase I to phosphorylate downstream targets such as the cytoskeleton-associated vasodilator-activated phosphoprotein, and it inhibits phosphodiesterase 3A, thereby enhancing pericyte cAMP levels. These pathways ultimately prevent endothelin-induced increases of pericyte calcium levels and pericyte contraction. Mice with deletion of GC-B in microcirculatory SMCs and pericytes have elevated peripheral resistance and chronic arterial hypertension without a change in renal function. CONCLUSIONS Our studies indicate that endothelial CNP regulates distal arteriolar and capillary blood flow. CNP-induced GC-B/cGMP signaling in microvascular SMCs and pericytes is essential for the maintenance of normal microvascular resistance and blood pressure.
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Affiliation(s)
- Katarina Špiranec
- Institute of Physiology, University of Würzburg and Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K. Špiranec, W.C., S.C., F.W., T.N., F.K., P.E.-N., K. Schuh, M.K.)
| | - Wen Chen
- Institute of Physiology, University of Würzburg and Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K. Špiranec, W.C., S.C., F.W., T.N., F.K., P.E.-N., K. Schuh, M.K.)
| | - Franziska Werner
- Institute of Physiology, University of Würzburg and Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K. Špiranec, W.C., S.C., F.W., T.N., F.K., P.E.-N., K. Schuh, M.K.)
| | - Viacheslav O Nikolaev
- Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Germany (V.O.N.)
| | - Takashi Naruke
- Institute of Physiology, University of Würzburg and Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K. Špiranec, W.C., S.C., F.W., T.N., F.K., P.E.-N., K. Schuh, M.K.)
| | - Franziska Koch
- Institute of Physiology, University of Würzburg and Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K. Špiranec, W.C., S.C., F.W., T.N., F.K., P.E.-N., K. Schuh, M.K.)
| | - Andrea Werner
- Institute of Physiology, University of Regensburg, Germany (A.W., F.S.)
| | - Petra Eder-Negrin
- Institute of Physiology, University of Würzburg and Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K. Špiranec, W.C., S.C., F.W., T.N., F.K., P.E.-N., K. Schuh, M.K.)
| | - Rodrigo Diéguez-Hurtado
- Max-Planck-Institute for Molecular Biomedicine, Department of Tissue Morphogenesis (R.D.-H., R.H.A.)
| | - Ralf H Adams
- Max-Planck-Institute for Molecular Biomedicine, Department of Tissue Morphogenesis (R.D.-H., R.H.A.)
| | - Hideo A Baba
- Faculty of Medicine, University of Münster, Germany. Institute of Pathology, University Hospital Essen, University Duisburg-Essen, Germany (H.A.B.)
| | - Hannes Schmidt
- Interfaculty Institute of Biochemistry, University of Tübingen, Germany (H.S.)
| | - Kai Schuh
- Institute of Physiology, University of Würzburg and Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K. Špiranec, W.C., S.C., F.W., T.N., F.K., P.E.-N., K. Schuh, M.K.)
| | - Boris V Skryabin
- Core Facility Transgenic Animal and genetic engineering Models (B.V.S.)
| | - Kiavash Movahedi
- Myeloid Cell Immunology Lab, Vesalius Research Center, Center for Inflammation Research, and Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium (K.M.)
| | - Frank Schweda
- Institute of Physiology, University of Regensburg, Germany (A.W., F.S.)
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg and Comprehensive Heart Failure Center, University Hospital Würzburg, Germany (K. Špiranec, W.C., S.C., F.W., T.N., F.K., P.E.-N., K. Schuh, M.K.)
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Vill K, Blaschek A, Gläser D, Kuhn M, Haack T, Alhaddad B, Wagner M, Kovacs-Nagy R, Tacke M, Gerstl L, Schroeder AS, Borggraefe I, Mueller C, Schlotter-Weigel B, Schoser B, Walter MC, Müller-Felber W. Early-Onset Myopathies: Clinical Findings, Prevalence of Subgroups and Diagnostic Approach in a Single Neuromuscular Referral Center in Germany. J Neuromuscul Dis 2019; 4:315-325. [PMID: 29172004 DOI: 10.3233/jnd-170231] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Early-onset myopathies are a heterogeneous group of neuromuscular diseases with broad clinical, genetic and histopathological overlap. The diagnostic approach has considerably changed since high throughput genetic methods (next generation sequencing, NGS) became available. OBJECTIVE We present diagnostic subgroups in a single neuromuscular referral center and describe an algorithm for the diagnostic work-up. METHODS The diagnostic approach of 98 index patients was retrospectively analysed. In 56 cases targeted sequencing of a known gene was performed, in 44 patients NGS was performed using large muscle specific panels, and in 12 individuals whole exome sequencing (WES) was undertaken. One patient was diagnosed via array CGH. Clinical features of all patients are provided. RESULTS The final diagnosis could be found in 63 out of 98 patients (64%) with molecular genetic analysis. In 55% targeted gene sequencing could establish the genetic diagnosis. However, this rate largely depended on the presence of distinct histological or clinical features. NGS (large myopathy-related panels and WES) revealed genetic diagnosis in 58.5% (52% and 67%, respectively). The genes detected by WES in our cohort of patients were all covered by the panels. Based on our findings we propose an algorithm for a practical diagnostic approach.Prevalences:MTM1- and LAMA2-patients are the two biggest subgroups, followed by SEPN1-, RYR1- and Collagen VI-related diseases. 31% of genetically confirmed cases represents a group with overlap between "congenital myopathies (CM)" and "congenital muscular dystrophies (CMD)". In 36% of the patients a specific genetic diagnosis could not be assigned. CONCLUSIONS A final diagnosis can be confirmed by high throughput genetic analysis in 58.5% of the cases, which is a higher rate than reported in the literature for muscle biopsy and should in many cases be considered as a first diagnostic tool. NGS cannot replace neuromuscular expertise and a close discussion with the geneticists on NGS is mandatory. Targeted candidate gene sequencing still plays a role in selected cases with highly suspicious clinical or histological features. There is a relevant clinical and genetic overlap between the entities CM and CMD.
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Affiliation(s)
- K Vill
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Center for Neuromuscular Disorders in Childhood. Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Germany
| | - A Blaschek
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Center for Neuromuscular Disorders in Childhood. Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Germany
| | - D Gläser
- genetikum® Center for Human Genetics, Neu-Ulm, Germany
| | - M Kuhn
- genetikum® Center for Human Genetics, Neu-Ulm, Germany
| | - T Haack
- Institute of Human Genetics, Technische Universität München, Munich, Germany.,Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany.,Institute of Human Genetics, University of Tübingen, Germany
| | - B Alhaddad
- Institute of Human Genetics, Technische Universität München, Munich, Germany.,Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - M Wagner
- Institute of Human Genetics, Technische Universität München, Munich, Germany.,Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany.,Institute für Neurogenomik, Helmholtz Zentrum München, Neuherberg, Germany
| | - R Kovacs-Nagy
- Institute of Human Genetics, Technische Universität München, Munich, Germany
| | - M Tacke
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Center for Neuromuscular Disorders in Childhood. Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Germany
| | - L Gerstl
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Center for Neuromuscular Disorders in Childhood. Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Germany
| | - A S Schroeder
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Center for Neuromuscular Disorders in Childhood. Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Germany
| | - I Borggraefe
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Center for Neuromuscular Disorders in Childhood. Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Germany
| | - C Mueller
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Center for Neuromuscular Disorders in Childhood. Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Germany
| | - B Schlotter-Weigel
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-Universität, München, Munich, Germany
| | - B Schoser
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-Universität, München, Munich, Germany
| | - M C Walter
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-Universität, München, Munich, Germany
| | - W Müller-Felber
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Center for Neuromuscular Disorders in Childhood. Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Germany
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Martinez A, Kuhn M, Briesen H, Hekmat D. Enhancing the X-ray contrast of polymeric biochromatography particles for three-dimensional imaging. J Chromatogr A 2019; 1590:65-72. [DOI: 10.1016/j.chroma.2018.12.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/21/2018] [Accepted: 12/29/2018] [Indexed: 10/27/2022]
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Khaki M, Hoteit I, Kuhn M, Forootan E, Awange J. Assessing data assimilation frameworks for using multi-mission satellite products in a hydrological context. Sci Total Environ 2019; 647:1031-1043. [PMID: 30180311 DOI: 10.1016/j.scitotenv.2018.08.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/24/2018] [Accepted: 08/03/2018] [Indexed: 06/08/2023]
Abstract
With a growing number of available datasets especially from satellite remote sensing, there is a great opportunity to improve our knowledge of the state of the hydrological processes via data assimilation. Observations can be assimilated into numerical models using dynamics and data-driven approaches. The present study aims to assess these assimilation frameworks for integrating different sets of satellite measurements in a hydrological context. To this end, we implement a traditional data assimilation system based on the Square Root Analysis (SQRA) filtering scheme and the newly developed data-driven Kalman-Takens technique to update the water components of a hydrological model with the Gravity Recovery And Climate Experiment (GRACE) terrestrial water storage (TWS), and soil moisture products from the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) and Soil Moisture and Ocean Salinity (SMOS) in a 5-day temporal scale. While SQRA relies on a physical model for forecasting, the Kalman-Takens only requires a trajectory of the system based on past data. We are particularly interested in testing both methods for assimilating different combination of the satellite data. In most of the cases, simultaneous assimilation of the satellite data by either standard SQRA or Kalman-Takens achieves the largest improvements in the hydrological state, in terms of the agreement with independent in-situ measurements. Furthermore, the Kalman-Takens approach performs comparably well to dynamical method at a fraction of the computational cost.
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Affiliation(s)
- M Khaki
- School of Earth and Planetary Sciences, Spatial Sciences, Curtin University, Perth, Australia; School of Engineering, University of Newcastle, Callaghan, New South Wales, Australia.
| | - I Hoteit
- King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - M Kuhn
- School of Earth and Planetary Sciences, Spatial Sciences, Curtin University, Perth, Australia
| | - E Forootan
- School of Earth and Ocean Sciences, Cardiff University, Cardiff, UK
| | - J Awange
- School of Earth and Planetary Sciences, Spatial Sciences, Curtin University, Perth, Australia
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34
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Lindenberg P, Arana LR, Mahnke LK, Rönfeldt P, Heidenreich N, Doungmo G, Guignot N, Bean R, Chapman HN, Dierksmeyer D, Knoska J, Kuhn M, Garrevoet J, Mariani V, Oberthuer D, Pande K, Stern S, Tolstikova A, White TA, Beyerlein KR, Terraschke H. New insights into the crystallization of polymorphic materials: from real-time serial crystallography to luminescence analysis. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00191c] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article unravels reaction conditions governing the formation of polymorphic structures in solution down to the single particle level applying, for instance, unprecedented real-time serial crystallography measurements during a synthesis process.
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35
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Khaki M, Awange J, Forootan E, Kuhn M. Understanding the association between climate variability and the Nile's water level fluctuations and water storage changes during 1992-2016. Sci Total Environ 2018; 645:1509-1521. [PMID: 30248872 DOI: 10.1016/j.scitotenv.2018.07.212] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/16/2018] [Accepted: 07/16/2018] [Indexed: 06/08/2023]
Abstract
With the construction of the largest dam in Africa, the Grand Ethiopian Renaissance Dam (GERD) along the Blue Nile, the Nile is back in the news. This, combined with Bujagali Dam on the White Nile are expected to bring ramification to the downstream countries. A comprehensive analysis of the Nile's waters (surface, soil moisture and groundwater) is, therefore, essential to inform its management. Owing to its shear size, however, obtaining in-situ data from "boots on the ground" is practically impossible, paving way to the use of satellite remotely sensed and models' products. The present study employs multi-mission satellites and surface models' products to provide, for the first time, a comprehensive analysis of the changes in Nile's stored waters' compartments; surface, soil moisture and groundwater, and their association to climate variability (El Niño Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD)) over the period 1992-2016. In this regard, remotely sensed altimetry data from TOPEX/Poseidon (T/P), Jason-1, and Jason-2 satellites along with the Gravity Recovery And Climate Experiment (GRACE) mission, and the Tropical Rainfall Measuring Mission Project (TRMM) rainfall products are applied to analyze the compartmental changes over the Nile River Basin (NRB). This is achieved through the creation of 62 virtual gauge stations distributed throughout the Nile River that generate water levels, which are used to compute surface water storage changes. Using GRACE total water storage (TWS), soil moisture data from multi-models based on the Triple Collocation Analysis (TCA) method, and altimetry derived surface water storage, Nile basin's groundwater variations are estimated. The impacts of climate variability on the compartmental changes are examined using TRMM precipitation and large-scale ocean-atmosphere ENSO and IOD indices. The results indicate a strong correlation between the river level variations and precipitation changes in the central part of the basin (0.77 on average) in comparison to the northern (0.64 on average) and southern parts (0.72 on average). Larger water storages and rainfall variations are observed in the Upper Nile in contrast to the Lower Nile. A negative groundwater trend is also found over the Lower Nile, which could be attributed to a significantly lower amount of rainfall in the last decade and extensive irrigation over the region.
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Affiliation(s)
- M Khaki
- School of Earth and Planetary Sciences, Discipline of Spatial Sciences, Curtin University, Perth, Australia; School of Engineering, University of Newcastle, Callaghan, New South Wales, Australia.
| | - J Awange
- School of Earth and Planetary Sciences, Discipline of Spatial Sciences, Curtin University, Perth, Australia
| | - E Forootan
- School of Earth and Ocean Sciences, Cardiff University, Cardiff, UK
| | - M Kuhn
- School of Earth and Planetary Sciences, Discipline of Spatial Sciences, Curtin University, Perth, Australia
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Kokkonen-Simon KM, Saberi A, Nakamura T, Ranek MJ, Zhu G, Bedja D, Kuhn M, Halushka MK, Lee DI, Kass DA. Marked disparity of microRNA modulation by cGMP-selective PDE5 versus PDE9 inhibitors in heart disease. JCI Insight 2018; 3:121739. [PMID: 30089721 DOI: 10.1172/jci.insight.121739] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/26/2018] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs (miRs) posttranscriptionally regulate mRNA and its translation into protein, and are considered master controllers of genes modulating normal physiology and disease. There is growing interest in how miRs change with drug treatment, and leveraging this for precision guided therapy. Here we contrast 2 closely related therapies, inhibitors of phosphodiesterase type 5 or type 9 (PDE5-I, PDE9-I), given to mice subjected to sustained cardiac pressure overload (PO). Both inhibitors augment cyclic guanosine monophosphate (cGMP) to activate protein kinase G, with PDE5-I regulating nitric oxide (NO) and PDE9-I natriuretic peptide-dependent signaling. While both produced strong phenotypic improvement of PO pathobiology, they surprisingly showed binary differences in miR profiles; PDE5-I broadly reduces more than 120 miRs, including nearly half those increased by PO, whereas PDE9-I has minimal impact on any miR (P < 0.0001). The disparity evolves after pre-miR processing and is organ specific. Lastly, even enhancing NO-coupled cGMP by different methods leads to altered miR regulation. Thus, seemingly similar therapeutic interventions can be barcoded by profound differences in miR signatures, and reversing disease-associated miR changes is not required for therapy success.
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Affiliation(s)
- Kristen M Kokkonen-Simon
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.,Cellular and Molecular Medicine Graduate Program, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Amir Saberi
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Taishi Nakamura
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Mark J Ranek
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Guangshuo Zhu
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Djahida Bedja
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Marc K Halushka
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Dong Ik Lee
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - David A Kass
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.,Department of Pharmacology and Molecular Sciences, Johns Hopkins University, Baltimore, Maryland, USA
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Tauscher S, Nakagawa H, Völker K, Werner F, Krebes L, Potapenko T, Doose S, Birkenfeld AL, Baba HA, Kuhn M. β Cell-specific deletion of guanylyl cyclase A, the receptor for atrial natriuretic peptide, accelerates obesity-induced glucose intolerance in mice. Cardiovasc Diabetol 2018; 17:103. [PMID: 30016962 PMCID: PMC6048747 DOI: 10.1186/s12933-018-0747-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 07/11/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The cardiac hormones atrial (ANP) and B-type natriuretic peptides (BNP) moderate arterial blood pressure and improve energy metabolism as well as insulin sensitivity via their shared cGMP-producing guanylyl cyclase-A (GC-A) receptor. Obesity is associated with impaired NP/GC-A/cGMP signaling, which possibly contributes to the development of type 2 diabetes and its cardiometabolic complications. In vitro, synthetic ANP, via GC-A, stimulates glucose-dependent insulin release from cultured pancreatic islets and β-cell proliferation. However, the relevance for systemic glucose homeostasis in vivo is not known. To dissect whether the endogenous cardiac hormones modulate the secretory function and/or proliferation of β-cells under (patho)physiological conditions in vivo, here we generated a novel genetic mouse model with selective disruption of the GC-A receptor in β-cells. METHODS Mice with a floxed GC-A gene were bred to Rip-CreTG mice, thereby deleting GC-A selectively in β-cells (β GC-A KO). Weight gain, glucose tolerance, insulin sensitivity, and glucose-stimulated insulin secretion were monitored in normal diet (ND)- and high-fat diet (HFD)-fed mice. β-cell size and number were measured by immunofluorescence-based islet morphometry. RESULTS In vitro, the insulinotropic and proliferative actions of ANP were abolished in islets isolated from β GC-A KO mice. Concordantly, in vivo, infusion of BNP mildly enhanced baseline plasma insulin levels and glucose-induced insulin secretion in control mice. This effect of exogenous BNP was abolished in β GC-A KO mice, corroborating the efficient inactivation of the GC-A receptor in β-cells. Despite this under physiological, ND conditions, fasted and fed insulin levels, glucose-induced insulin secretion, glucose tolerance and β-cell morphology were similar in β GC-A KO mice and control littermates. However, HFD-fed β GC-A KO animals had accelerated glucose intolerance and diminished adaptative β-cell proliferation. CONCLUSIONS Our studies of β GC-A KO mice demonstrate that the cardiac hormones ANP and BNP do not modulate β-cell's growth and secretory functions under physiological, normal dietary conditions. However, endogenous NP/GC-A signaling improves the initial adaptative response of β-cells to HFD-induced obesity. Impaired β-cell NP/GC-A signaling in obese individuals might contribute to the development of type 2 diabetes.
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Affiliation(s)
- Sabine Tauscher
- Institute of Physiology, University of Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Hitoshi Nakagawa
- Institute of Physiology, University of Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Katharina Völker
- Institute of Physiology, University of Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Franziska Werner
- Institute of Physiology, University of Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Lisa Krebes
- Institute of Physiology, University of Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Tamara Potapenko
- Institute of Physiology, University of Würzburg, Röntgenring 9, 97070, Würzburg, Germany
| | - Sören Doose
- Department of Biotechnology and Biophysics, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Andreas L Birkenfeld
- Paul Langerhans Institute Dresden of the Helmholtz Center Munich at University Hospital and Faculty of Medicine, TU Dresden, Fetscherstraße 74, 01307, Dresden, Germany
| | - Hideo A Baba
- Institute of Pathology and Neuropathology, University Hospital Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Röntgenring 9, 97070, Würzburg, Germany.
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Khaki M, Forootan E, Kuhn M, Awange J, Papa F, Shum CK. A study of Bangladesh's sub-surface water storages using satellite products and data assimilation scheme. Sci Total Environ 2018; 625:963-977. [PMID: 29306834 DOI: 10.1016/j.scitotenv.2017.12.289] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 12/21/2017] [Accepted: 12/23/2017] [Indexed: 06/07/2023]
Abstract
Climate change can significantly influence terrestrial water changes around the world particularly in places that have been proven to be more vulnerable such as Bangladesh. In the past few decades, climate impacts, together with those of excessive human water use have changed the country's water availability structure. In this study, we use multi-mission remotely sensed measurements along with a hydrological model to separately analyze groundwater and soil moisture variations for the period 2003-2013, and their interactions with rainfall in Bangladesh. To improve the model's estimates of water storages, terrestrial water storage (TWS) data obtained from the Gravity Recovery And Climate Experiment (GRACE) satellite mission are assimilated into the World-Wide Water Resources Assessment (W3RA) model using the ensemble-based sequential technique of the Square Root Analysis (SQRA) filter. We investigate the capability of the data assimilation approach to use a non-regional hydrological model for a regional case study. Based on these estimates, we investigate relationships between the model derived sub-surface water storage changes and remotely sensed precipitations, as well as altimetry-derived river level variations in Bangladesh by applying the empirical mode decomposition (EMD) method. A larger correlation is found between river level heights and rainfalls (78% on average) in comparison to groundwater storage variations and rainfalls (57% on average). The results indicate a significant decline in groundwater storage (∼32% reduction) for Bangladesh between 2003 and 2013, which is equivalent to an average rate of 8.73 ± 2.45mm/year.
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Affiliation(s)
- M Khaki
- School of Earth and Planetary Sciences, Discipline of Spatial Sciences, Curtin University, Perth, Australia.
| | - E Forootan
- School of Earth and Ocean Sciences, Cardiff University, Cardiff, UK
| | - M Kuhn
- School of Earth and Planetary Sciences, Discipline of Spatial Sciences, Curtin University, Perth, Australia
| | - J Awange
- School of Earth and Planetary Sciences, Discipline of Spatial Sciences, Curtin University, Perth, Australia
| | - F Papa
- LEGOS, Université de Toulouse, IRD, CNES, CNRS, UPS, Toulouse 31400, France; Indo-French Cell for Water Sciences (IFCWS), IRD-IISc-NIO-IITM Joint International Laboratory, Bangalore 560012, India
| | - C K Shum
- Division of Geodetic Science, School of Earth Sciences, The Ohio State University, Columbus, OH, USA; Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China
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Sterr A, Kuhn M, Nissen C, Ettine D, Funk S, Feige B, Umarova R, Urbach H, Weiller C, Riemann D. Post-stroke insomnia in community-dwelling patients with chronic motor stroke: Physiological evidence and implications for stroke care. Sci Rep 2018; 8:8409. [PMID: 29849087 PMCID: PMC5976765 DOI: 10.1038/s41598-018-26630-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 04/16/2018] [Indexed: 01/30/2023] Open
Abstract
Questionnaire studies suggest that stroke patients experience sustained problems with sleep and daytime sleepiness, but physiological sleep studies focussing specifically on the chronic phase of stroke are lacking. Here we report for the first time physiological data of sleep and daytime sleepiness obtained through the two gold-standard methods, nocturnal polysomnography and the Multiple Sleep Latency Test. Data from community-dwelling patients with chronic right-hemispheric stroke (>12 months) were compared to sex- and age-matched controls. Behavioural and physiological measures suggested that stroke patients had poorer sleep with longer sleep latencies and lower sleep efficiency. Patients further spent more time awake during the night, and showed greater high-frequency power during nonREM sleep than controls. At the same time the Multiple Sleep Latency Test revealed greater wake efficiency in patients than controls. Importantly these findings were not due to group differences in sleep disordered breathing or periodic limb movements. Post-stroke insomnia is presently not adequately addressed within the care pathway for stroke. A holistic approach to rehabilitation and care provision, that includes targeted sleep interventions, is likely to enhance long-term outcome and quality of live in those living with chronic deficits after stroke.
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Affiliation(s)
- A Sterr
- School of Psychology, University of Surrey, Guildford, UK.
| | - M Kuhn
- Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - C Nissen
- Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- University Hospital of Psychiatry and Psychotherapy, Bern, Switzerland
- Sleep Wake Epilepsy Center, Neuroscience Center, Bern, Switzerland
| | - D Ettine
- Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - S Funk
- Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - B Feige
- Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - R Umarova
- Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Neurology, University Hospital Bern, Bern, Switzerland
| | - H Urbach
- Department of Neuroradiology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - C Weiller
- Department of Neurology, Medical Center, University of Freiburg, Freiburg, Germany
| | - D Riemann
- Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Bock M, Razzouk A, Chinnock R, Kuhn M, Martens T, Shankel T, Hasaniya N, Bailey L. Heart Transplantation in Infants and Children: The Thirty-Year Loma Linda University Experience. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.464] [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: 12/01/2022] Open
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41
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Kuhn M, Hornung A, Sieverding L, Schlensak C, Hofbeck M, Wiegand G. Comparative Noninvasive Measurement of Cardiac Output Based on the Inert Gas Rebreathing Method (Innocor®) and MRI in Patients with Univentricular Hearts. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1628345] [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)
- M. Kuhn
- Department of Pediatric Cardiology, University Children's Hospital Tuebingen, Tuebingen, Germany
| | - A. Hornung
- Department of Pediatric Cardiology, University Children's Hospital Tuebingen, Tuebingen, Germany
| | - L. Sieverding
- Department of Pediatric Cardiology, University Children's Hospital Tuebingen, Tuebingen, Germany
| | - C. Schlensak
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tuebingen, Tuebingen, Germany
| | - M. Hofbeck
- Department of Pediatric Cardiology, University Children's Hospital Tuebingen, Tuebingen, Germany
| | - G. Wiegand
- Department of Pediatric Cardiology, University Children's Hospital Tuebingen, Tuebingen, Germany
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Lueken U, Kuhn M, Yang Y, Straube B, Kircher T, Wittchen HU, Pfleiderer B, Arolt V, Wittmann A, Ströhle A, Weber H, Reif A, Domschke K, Deckert J, Lonsdorf TB. Modulation of defensive reactivity by GLRB allelic variation: converging evidence from an intermediate phenotype approach. Transl Psychiatry 2017; 7:e1227. [PMID: 28872638 PMCID: PMC5639239 DOI: 10.1038/tp.2017.186] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 06/07/2017] [Accepted: 07/04/2017] [Indexed: 01/20/2023] Open
Abstract
Representing a phylogenetically old and very basic mechanism of inhibitory neurotransmission, glycine receptors have been implicated in the modulation of behavioral components underlying defensive responding toward threat. As one of the first findings being confirmed by genome-wide association studies for the phenotype of panic disorder and agoraphobia, allelic variation in a gene coding for the glycine receptor beta subunit (GLRB) has recently been associated with increased neural fear network activation and enhanced acoustic startle reflexes. On the basis of two independent healthy control samples, we here aimed to further explore the functional significance of the GLRB genotype (rs7688285) by employing an intermediate phenotype approach. We focused on the phenotype of defensive system reactivity across the levels of brain function, structure, and physiology. Converging evidence across both samples was found for increased neurofunctional activation in the (anterior) insular cortex in GLRB risk allele carriers and altered fear conditioning as a function of genotype. The robustness of GLRB effects is demonstrated by consistent findings across different experimental fear conditioning paradigms and recording sites. Altogether, findings provide translational evidence for glycine neurotransmission as a modulator of the brain's evolutionary old dynamic defensive system and provide further support for a strong, biologically plausible candidate intermediate phenotype of defensive reactivity. As such, glycine-dependent neurotransmission may open up new avenues for mechanistic research on the etiopathogenesis of fear and anxiety disorders.
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Affiliation(s)
- U Lueken
- Center of Mental Health, Department of Psychiatry, Psychosomatics, and Psychotherapy, University Hospital of Würzburg, Würzburg, Germany
| | - M Kuhn
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Y Yang
- Department of Psychiatry and Psychotherapy, Phillips-University Marburg, Marburg, Germany
| | - B Straube
- Department of Psychiatry and Psychotherapy, Phillips-University Marburg, Marburg, Germany
| | - T Kircher
- Department of Psychiatry and Psychotherapy, Phillips-University Marburg, Marburg, Germany
| | - H-U Wittchen
- Department of Psychology, Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden, Dresden, Germany
| | - B Pfleiderer
- Department of Clinical Radiology, University Hospital Münster, Münster, Germany
| | - V Arolt
- Department of Psychiatry, University Hospital Münster, Münster, Germany
| | - A Wittmann
- Department of Psychiatry and Psychotherapy, Charité - University Medicine Berlin, Berlin, Germany
| | - A Ströhle
- Department of Psychiatry and Psychotherapy, Charité - University Medicine Berlin, Berlin, Germany
| | - H Weber
- Center of Mental Health, Department of Psychiatry, Psychosomatics, and Psychotherapy, University Hospital of Würzburg, Würzburg, Germany
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - A Reif
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - K Domschke
- Center of Mental Health, Department of Psychiatry, Psychosomatics, and Psychotherapy, University Hospital of Würzburg, Würzburg, Germany
- Department of Psychiatry and Psychotherapy, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - J Deckert
- Center of Mental Health, Department of Psychiatry, Psychosomatics, and Psychotherapy, University Hospital of Würzburg, Würzburg, Germany
| | - T B Lonsdorf
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Palomba M, Till B, Park S, Morschhauser F, Cartron G, Marks R, Penuel E, Chitra S, Kuhn M, Popplewell L. A PHASE IB STUDY EVALUATING THE SAFETY AND CLINICAL ACTIVITY OF ATEZOLIZUMAB COMBINED WITH OBINUTUZUMAB IN PATIENTS WITH RELAPSED OR REFRACTORY NON-HODGKIN LYMPHOMA (NHL). Hematol Oncol 2017. [DOI: 10.1002/hon.2437_126] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M.L. Palomba
- Lymphoma Service; Memorial Sloan Kettering Cancer Center; New York New York USA
| | - B.G. Till
- Seattle Cancer Care Alliance; Fred Hutchinson Cancer Research Center; Seattle WA USA
| | - S.I. Park
- Lineberger Comprehensive Cancer Center; University of North Carolina; USA
| | - F. Morschhauser
- Department of Clinical Hematology; Lille University Hospital Center; Lille France
| | - G. Cartron
- Department of Clinical Hematology; University Hospital Center of Montpellier; Montpellier France
| | - R. Marks
- Department of Hematology, Oncology and Stem Cell Transplantation; Universitätsklinikum Freiburg; Freiburg Germany
| | - E. Penuel
- Product Development Oncology; Genentech, Inc.; South San Francisco California USA
| | - S. Chitra
- Product Development Oncology; Genentech, Inc.; South San Francisco California USA
| | - M. Kuhn
- Product Development Oncology; Genentech, Inc.; South San Francisco California USA
| | - L. Popplewell
- Hematology & Hematopoietic Cell Transplantation; City of Hope, Duarte California USA
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Fuchs (Theil) A, Wilhelm C, Kuhn M, Petzold A, Tuve S, Oelschlägel U, Dahl A, Bornhäuser M, Bonifacio E, Eugster A. Regulatory T cell kinetics following adoptive transfer of expanded allogeneic regulatory T cells into patients with chronic graft-versus host disease. Cytotherapy 2017. [DOI: 10.1016/j.jcyt.2017.02.016] [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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Maier JG, Piosczyk H, Holz J, Landmann N, Deschler C, Frase L, Kuhn M, Kloeppel S, Spiegelhalder K, Sterr A, Riemann D, Feige B, Voderholzer U, Nissen C. 0213 BRIEF PERIODS OF NREM SLEEP DO NOT PROMOTE EARLY OFFLINE GAINS BUT SUBSEQUENT ON-TASK PERFORMANCE IN MOTOR SKILL LEARNING. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.212] [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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Nissen C, Maier JG, Kuhn M, Mainberger F, Feige B, Klöppel S, Riemann D. 0226 SLOW WAVE SLEEP ORCHESTRATES INPUT-SPECIFIC STRENGTHENING AND GLOBAL DOWNSCALING OF SYNAPSES IN THE HUMAN CORTEX. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.225] [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: 11/13/2022] Open
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Linhartová P, Kuhn M, Damborská A, Lamoš M, Mikl M, Barteček R, Theiner P, Kašpárek T, Bareš M. Neural correlates of behavioral inhibition in healthy people and in patients with borderline personality disorder and ADHD. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.02.316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
IntroductionDeficits in behavioral inhibition leading to impulsivity occur frequently in many otherwise different psychiatric diseases, mainly ADHD and borderline personality disorder (BPD). However, the research is complicated by using of different tests and their parameters. Further, the role of frontoparietal network in behavioral inhibition has been questioned recently.ObjectivesThe aims of our studies were:– to present the influence of differences in inhibition tasks parameters;– to describe neural correlates of behavioral inhibition in healthy people;– to compare them with BPD and ADHD patients.MethodsWe implemented two different variants of Go/NoGo Task, one designed for behavioral research and the second for neuroimaging. Thirty healthy participants (37% of women, age range 15 to 33 years) underwent behavioral and fMRI measurement. Further, groups of patients with BPD, ADHD and their healthy controls underwent the Go/NoGo Task under both fMRI and EEG.ResultsThe results show differences in behavioral performance based on different task parameters. The fMRI results in healthy people show specific activation patterns within the frontoparietal network associated with inhibition trials (mainly inferior frontal gyrus, insula, cingulate gyrus, SMA, inferior parietal lobule). Further, we present differences between patients with BPD, ADHD and controls in BOLD signal and ERPs.ConclusionsGo/NoGo Task design substantially influences the subjects’ behavioral performance. Our results with methodologically upgraded Go/NoGo Task design provide support for the inhibition frontoparietal brain network and its different activations in BPD and ADHD patients. The research was supported by Ministry of Health of the Czech Republic, grant nr. 15-30062A.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Mack F, Baumert B, Steffens R, Kuhn M, Herrlinger U, Glas M. P09.02 Survival after re-irradiation of recurrent glioblastoma: no impact of MGMT and treatment modalities? Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.260] [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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Herold S, Kuhn M, Bonin MV, Stange T, Platzbecker U, Radke J, Lange T, Sockel K, Gutsche K, Schetelig J, Röllig C, Schuster C, Roeder I, Dahl A, Mohr B, Serve H, Brandts C, Ehninger G, Bornhäuser M, Thiede C. Donor cell leukemia: evidence for multiple preleukemic clones and parallel long term clonal evolution in donor and recipient. Leukemia 2017; 31:1637-1640. [PMID: 28348390 DOI: 10.1038/leu.2017.104] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- S Herold
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - M Kuhn
- Institut für Medizinische Informatik und Biometrie, TU Dresden, Dresden, Germany
| | - M V Bonin
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Dresden, Germany.,Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany
| | - T Stange
- Institut für Medizinische Informatik und Biometrie, TU Dresden, Dresden, Germany
| | - U Platzbecker
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - J Radke
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - T Lange
- Abteilung Hämatologie, Universitätsklinikum Leipzig AöR, Leipzig, Germany
| | - K Sockel
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - K Gutsche
- Klinik für Hämatologie und Onkologie, Städtisches Klinikum Görlitz, Görlitz, Germany
| | - J Schetelig
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - C Röllig
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - C Schuster
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - I Roeder
- Institut für Medizinische Informatik und Biometrie, TU Dresden, Dresden, Germany
| | - A Dahl
- Deep Sequencing Core Facility, Center for Regenerative Medicine, TU Dresden, Dresden, Germany
| | - B Mohr
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - H Serve
- Medizinische Klinik II, Klinikum der Johann-Wolfgang-Goethe-Universität, Frankfurt am Main, Germany
| | - C Brandts
- Medizinische Klinik II, Klinikum der Johann-Wolfgang-Goethe-Universität, Frankfurt am Main, Germany
| | - G Ehninger
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - M Bornhäuser
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - C Thiede
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
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50
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Theil A, Wilhelm C, Kuhn M, Petzold A, Tuve S, Oelschlägel U, Dahl A, Bornhäuser M, Bonifacio E, Eugster A. T cell receptor repertoires after adoptive transfer of expanded allogeneic regulatory T cells. Clin Exp Immunol 2016; 187:316-324. [PMID: 27774628 DOI: 10.1111/cei.12887] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2016] [Indexed: 12/16/2022] Open
Abstract
Regulatory T cell (Treg ) therapy has been exploited in autoimmune disease, solid organ transplantation and in efforts to prevent or treat graft-versus-host disease (GVHD). However, our knowledge on the in-vivo persistence of transfused Treg is limited. Whether Treg transfusion leads to notable changes in the overall Treg repertoire or whether longevity of Treg in the periphery is restricted to certain clones is unknown. Here we use T cell receptor alpha chain sequencing (TCR-α-NGS) to monitor changes in the repertoire of Treg upon polyclonal expansion and after subsequent adoptive transfer. We applied TCR-α-NGS to samples from two patients with chronic GVHD who received comparable doses of stem cell donor derived expanded Treg . We found that in-vitro polyclonal expansion led to notable repertoire changes in vitro and that Treg cell therapy altered the peripheral Treg repertoire considerably towards that of the infused cell product, to different degrees, in each patient. Clonal changes in the peripheral blood were transient and correlated well with the clinical parameters. We suggest that T cell clonotype analyses using TCR sequencing should be considered as a means to monitor longevity and fate of adoptively transferred T cells.
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Affiliation(s)
- A Theil
- DFG-Center for Regenerative Therapies Dresden, Dresden, Germany.,Internal Medicine I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - C Wilhelm
- DFG-Center for Regenerative Therapies Dresden, Dresden, Germany
| | - M Kuhn
- Institute for Medical Informatics and Biometry, Faculty of Medicine Carl Gustav Carus, Dresden, Germany
| | - A Petzold
- Deep Sequencing Group, Biotechnology Center, Technische Universität Dresden, Dresden, Germany
| | - S Tuve
- Internal Medicine I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - U Oelschlägel
- Internal Medicine I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - A Dahl
- Deep Sequencing Group, Biotechnology Center, Technische Universität Dresden, Dresden, Germany
| | - M Bornhäuser
- Internal Medicine I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - E Bonifacio
- DFG-Center for Regenerative Therapies Dresden, Dresden, Germany
| | - A Eugster
- DFG-Center for Regenerative Therapies Dresden, Dresden, Germany
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