1
|
Crompton M, Ferguson JK, Ramnath RD, Onions KL, Ogier AS, Gamez M, Down CJ, Skinner L, Wong KH, Dixon LK, Sutak J, Harper SJ, Pontrelli P, Gesualdo L, Heerspink HL, Toto RD, Welsh GI, Foster RR, Satchell SC, Butler MJ. Mineralocorticoid receptor antagonism in diabetes reduces albuminuria by preserving the glomerular endothelial glycocalyx. JCI Insight 2023; 8:e154164. [PMID: 36749631 PMCID: PMC10077489 DOI: 10.1172/jci.insight.154164] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 01/23/2023] [Indexed: 02/08/2023] Open
Abstract
The glomerular endothelial glycocalyx (GEnGlx) forms the first part of the glomerular filtration barrier. Previously, we showed that mineralocorticoid receptor (MR) activation caused GEnGlx damage and albuminuria. In this study, we investigated whether MR antagonism could limit albuminuria in diabetes and studied the site of action. Streptozotocin-induced diabetic Wistar rats developed albuminuria, increased glomerular albumin permeability (Ps'alb), and increased glomerular matrix metalloproteinase (MMP) activity with corresponding GEnGlx loss. MR antagonism prevented albuminuria progression, restored Ps'alb, preserved GEnGlx, and reduced MMP activity. Enzymatic degradation of the GEnGlx negated the benefits of MR antagonism, confirming their dependence on GEnGlx integrity. Exposing human glomerular endothelial cells (GEnC) to diabetic conditions in vitro increased MMPs and caused glycocalyx damage. Amelioration of these effects confirmed a direct effect of MR antagonism on GEnC. To confirm relevance to human disease, we used a potentially novel confocal imaging method to show loss of GEnGlx in renal biopsy specimens from patients with diabetic nephropathy (DN). In addition, patients with DN randomized to receive an MR antagonist had reduced urinary MMP2 activity and albuminuria compared with placebo and baseline levels. Taken together, our work suggests that MR antagonists reduce MMP activity and thereby preserve GEnGlx, resulting in reduced glomerular permeability and albuminuria in diabetes.
Collapse
Affiliation(s)
- Michael Crompton
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Joanne K. Ferguson
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Raina D. Ramnath
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Karen L. Onions
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Anna S. Ogier
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Monica Gamez
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Colin J. Down
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Laura Skinner
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Kitty H. Wong
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Lauren K. Dixon
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Judit Sutak
- Pathology Department, Southmead Hospital, Bristol, United Kingdom
| | - Steven J. Harper
- School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, United Kingdom
| | - Paola Pontrelli
- Division of Nephrology, Dialysis and Transplantation, Department of Emergency and Organ Transplantation, Aldo Moro University of Bari, Bari, Italy
| | - Loreto Gesualdo
- Division of Nephrology, Dialysis and Transplantation, Department of Emergency and Organ Transplantation, Aldo Moro University of Bari, Bari, Italy
| | - Hiddo L. Heerspink
- Department of Clinical Pharmacology, University Medical Center Groningen, University of Groningen, The Netherlands
| | - Robert D. Toto
- Department of Clinical Sciences, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Gavin I. Welsh
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Rebecca R. Foster
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Simon C. Satchell
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Matthew J. Butler
- Bristol Renal, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| |
Collapse
|
2
|
Araos P, Amador CA. Neutrophil gelatinase-associated lipocalin as an immunomodulator in endocrine hypertension. Front Endocrinol (Lausanne) 2022; 13:1006790. [PMID: 36387895 PMCID: PMC9640732 DOI: 10.3389/fendo.2022.1006790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/04/2022] [Indexed: 12/04/2022] Open
Abstract
In recent studies, primary aldosteronism (PA) has been reported as the most common etiology for secondary hypertension of endocrine origin, accounting for approximately 10% of cases. In PA, excess aldosterone production can lead to deleterious effects at the cardiovascular (CV) and renal levels by activating mineralocorticoid receptors, which involves an increase in pro-inflammatory and pro-fibrotic mediators. Among these mediators, neutrophil gelatinase-associated lipocalin (NGAL), a secretion glycoprotein belonging to the lipocalin superfamily, has been closely linked to CV and renal damage in several pathological conditions. Because NGAL can be detected in biofluids such as plasma and urine, it has been proposed as a damage biomarker for target tissues and has also been studied for its role in hypertension and associated with PA. NGAL is produced by many different cell types, can be carried on extracellular vesicles, and is modulated by microRNAs, which would support its use as a biomarker for endocrine hypertension due to PA. Over the last decade, studies have shown that NGAL is necessary for the development of aldosterone-induced hypertension and that is associated with end-organ damage. In addition, it has been proposed that some mechanisms are dependent on the activation of immune cells, such as dendritic cells and macrophages, where the release of specific cytokines (i.e., interleukin [IL]-23) or chemokines (i.e., CCL-5) induced by aldosterone would depend on NGAL. Subsequently, this activates the T helper (Th) lymphocytes, such as Th17 and Th2, resulting in CV and renal fibrosis due to the high aldosterone levels. Although the immune system has been closely associated with essential hypertension, its participation in endocrine hypertension has not been fully elucidated. This review discusses the link between NGAL and endocrine hypertension, particularly in the context of PA, and their possible regulators and mechanisms, with a focus on its role as an immunomodulator.
Collapse
Affiliation(s)
- Patricio Araos
- Laboratorio de Fisiopatología Renal, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| | - Cristián A. Amador
- Laboratorio de Fisiopatología Renal, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
- *Correspondence: Cristián A. Amador,
| |
Collapse
|
3
|
Wu F, Lin Y, Liu Q. The emerging role of aldosterone/mineralocorticoid receptors in the pathogenesis of erectile dysfunction. Endocrine 2018; 61:372-382. [PMID: 29721801 DOI: 10.1007/s12020-018-1610-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 04/17/2018] [Indexed: 12/26/2022]
Abstract
PURPOSE Aldosterone is an old hormone that has been discovered for more than fifty years. The clinical application of its receptors' inhibitors, especially spirolactone, has benifited patients for decades worldwide. In this review, we briefly summarized the molecular mechanism of aldosterone/mineralocorticoid receptors (Ald-MRs) signaling in cardiovascular diseases and its emerging role in erectile dysfunction. METHODS We searched PubMed, Web of Science, and Scopus for manuscripts published prior to December 2017 using key words " aldosterone " AND " erectile dysfunction " OR " cardiovascular disease " OR " mineralocorticoid receptors ". Related literature and clinical perspectives were collated, summarized and discussed in this review. RESULTS The increase of reactive oxygen species production, inhibition of endothelial nitric oxide synthase system, and induction of inflammation are ubiquitous in vascular endothelial cells or vascular smooth muscle cells after the activation of Ald-MRs pathway. In addition, in cardiovascular diseases with over-active Ald-MRs signaling, MRs blockade could reverse the injury and improve the prognosis. Notably, multiple studies have correlated aldosterone and MRs to the pathogenesis of erectile function, while the mechanism is largely unperfectly identified. CONCLUSION In conclusion, we summarize the current evidence to highlight the potential role of aldosterone in erectile dysfunction and provide critical insights into the treatment of the disease.
Collapse
Affiliation(s)
- Fei Wu
- Department of Urology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, China.
| | - Yun Lin
- Department of Urology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, China
| | - Qingyong Liu
- Department of Urology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, China.
| |
Collapse
|
4
|
Heming N, Sivanandamoorthy S, Meng P, Bounab R, Annane D. Immune Effects of Corticosteroids in Sepsis. Front Immunol 2018; 9:1736. [PMID: 30105022 PMCID: PMC6077259 DOI: 10.3389/fimmu.2018.01736] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 07/13/2018] [Indexed: 12/29/2022] Open
Abstract
Sepsis, a life-threatening organ dysfunction, results from a dysregulated host response to invading pathogens that may be characterized by overwhelming systemic inflammation or some sort of immune paralysis. Sepsis remains a major cause of morbidity and mortality. Treatment is nonspecific and relies on source control and organ support. Septic shock, the most severe form of sepsis is associated with the highest rate of mortality. Two large multicentre trials, undertaken 15 years apart, found that the combination of hydrocortisone and fludrocortisone significantly reduces mortality in septic shock. The corticosteroids family is composed of several molecules that are usually characterized according to their glucocorticoid and mineralocorticoid power, relative to hydrocortisone. While the immune effects of glucocorticoids whether mediated or not by the intracellular glucocorticoid receptor have been investigated for several decades, it is only very recently that potential immune effects of mineralocorticoids via non-renal mineralocorticoid receptors have gained popularity. We reviewed the respective role of glucocorticoids and mineralocorticoids in counteracting sepsis-associated dysregulated immune systems.
Collapse
Affiliation(s)
- Nicholas Heming
- General Intensive Care Unit, Raymond Poincaré Hospital, Garches, France.,U1173 Laboratory Inflammation and Infection, University of Versailles SQY-Paris Saclay - INSERM, Montigny-Le-Bretonneux, France
| | | | - Paris Meng
- General Intensive Care Unit, Raymond Poincaré Hospital, Garches, France
| | - Rania Bounab
- General Intensive Care Unit, Raymond Poincaré Hospital, Garches, France
| | - Djillali Annane
- General Intensive Care Unit, Raymond Poincaré Hospital, Garches, France.,U1173 Laboratory Inflammation and Infection, University of Versailles SQY-Paris Saclay - INSERM, Montigny-Le-Bretonneux, France
| |
Collapse
|
5
|
Milla S, Massart S, Mathieu C, Wang N, Douny C, Douxfils J, Scippo ML, De Pauw E, Dieu M, Silvestre F, Kestemont P. Physiological and proteomic responses to corticosteroid treatments in Eurasian perch, Perca fluviatilis: Investigation of immune-related parameters. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2017; 25:86-98. [PMID: 29223774 DOI: 10.1016/j.cbd.2017.11.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 11/20/2017] [Accepted: 11/24/2017] [Indexed: 10/25/2022]
Abstract
The comparative effects of cortisol and 11-deoxycorticosterone (DOC), two major corticosteroids in fish, have yet received little attention in teleosts. We evaluated the proteomic and immune responses of Eurasian perch to chronic corticosteroid treatments. We implanted immature perch with cortisol (80mg/kg) or DOC (4mg/kg) and measured the proportions of blood leucocytes, immune indices in the plasma, spleen and liver (complement and lysozyme activity, total immunoglobulin and immune gene expression in the tissues) and differential proteome expression (corticosteroid versus control) in the liver and the spleen on days 2, 4 and 14 post-treatment. Implantation of cortisol decreased the ratio of blood leucocytes and depressed Ig levels in both organs while DOC modulated the proportion of leucocyte sub-populations (increase in lymphocytes and decrease in granulocytes). In contrast, the innate humoral immunity was not strongly influenced by any of corticosteroid implants. The only immune parameter that was significantly affected was lysozyme, after DOC treatment. A number of proteins were differentially regulated by these hormones and some were identified in the liver (21 for cortisol and 8 for DOC) and in the spleen (10 for cortisol and 10 for DOC). None of the proteins was directly linked to immunity, except the natural killer enhancing factor, which was repressed by cortisol in the spleen. Our results also confirm that the proteins involved in energetic and glucose metabolism are affected by corticosteroids. Furthermore, these corticosteroids differently regulate immune status in Eurasian perch and they primarily impact leucocytes, as opposed to innate immune function.
Collapse
Affiliation(s)
- Sylvain Milla
- University of Namur, Research Unit in Environmental and Evolutionary Biology, rue de Bruxelles 61, B-5000 Namur, Belgium; Université de Lorraine, Unité de Recherche Animal et Fonctionnalités des Produits Animaux, USC INRA 340, Vandoeuvre-lès-Nancy F-54505, France..
| | - Sophie Massart
- University of Namur, Research Unit in Environmental and Evolutionary Biology, rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Cédric Mathieu
- University of Namur, Research Unit in Environmental and Evolutionary Biology, rue de Bruxelles 61, B-5000 Namur, Belgium.
| | - Neil Wang
- University of Namur, Research Unit in Environmental and Evolutionary Biology, rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Caroline Douny
- University of Liège, Département des Sciences des Denrées alimentaires, Boulevard de Colonster, 20, Bât. B43b, B-4000 Liège, Belgium.
| | - Jessica Douxfils
- University of Namur, Research Unit in Environmental and Evolutionary Biology, rue de Bruxelles 61, B-5000 Namur, Belgium.
| | - Marie-Louise Scippo
- University of Liège, Département des Sciences des Denrées alimentaires, Boulevard de Colonster, 20, Bât. B43b, B-4000 Liège, Belgium.
| | - Edwin De Pauw
- University of Liège, The Mass Spectrometry Laboratory, Institut de Chimie, Bat. B6c, B-4000 Liège, Belgium.
| | - Marc Dieu
- University of Namur, Research Unit in Cellular Biology, rue de Bruxelles 61, B-5000 Namur, Belgium.
| | - Frédéric Silvestre
- University of Namur, Research Unit in Environmental and Evolutionary Biology, rue de Bruxelles 61, B-5000 Namur, Belgium.
| | - Patrick Kestemont
- University of Namur, Research Unit in Environmental and Evolutionary Biology, rue de Bruxelles 61, B-5000 Namur, Belgium.
| |
Collapse
|
6
|
Marzolla V, Armani A, Mammi C, Moss ME, Pagliarini V, Pontecorvo L, Antelmi A, Fabbri A, Rosano G, Jaffe IZ, Caprio M. Essential role of ICAM-1 in aldosterone-induced atherosclerosis. Int J Cardiol 2017; 232:233-242. [PMID: 28089144 DOI: 10.1016/j.ijcard.2017.01.013] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 12/25/2016] [Accepted: 01/03/2017] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Elevated aldosterone is associated with increased risk of atherosclerosis complications, whereas treatment with mineralocorticoid receptor (MR) antagonists decreases the rate of cardiovascular events. Here we test the hypothesis that aldosterone promotes early atherosclerosis by modulating intercellular adhesion molecule-1 (ICAM-1) expression and investigate the molecular mechanisms by which aldosterone regulates ICAM-1 expression. METHODS AND RESULTS Apolipoprotein-E (ApoE)-/- mice fed an atherogenic diet and treated with aldosterone for 4weeks showed increased vascular expression of ICAM-1, paralleled by enhanced atherosclerotic plaque size in the aortic root. Moreover, aldosterone treatment resulted in increased plaque lipid and inflammatory cell content, consistent with an unstable plaque phenotype. ApoE/ICAM-1 double knockout (ApoE-/-/ICAM-1-/-) littermates were protected from the aldosterone-induced increase in plaque size, lipid content and macrophage infiltration. Since aldosterone is known to regulate ICAM-1 transcription via MR in human endothelial cells, we explored MR regulation of the ICAM-1 promoter. Luciferase reporter assays performed in HUVECs using deletion constructs of the human ICAM-1 gene promoter showed that a region containing a predicted MR-responsive element (MRE) is required for MR-dependent transcriptional regulation of ICAM-1. CONCLUSIONS Pro-atherogenic effects of aldosterone are mediated by increased ICAM-1 expression, through transcriptional regulation by endothelial MR. These data enhance our understanding of the molecular mechanism by which MR activation promotes atherosclerosis complications.
Collapse
Affiliation(s)
- Vincenzo Marzolla
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Pisana, 00166 Rome, Italy
| | - Andrea Armani
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Pisana, 00166 Rome, Italy
| | - Caterina Mammi
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Pisana, 00166 Rome, Italy
| | - Mary E Moss
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA, USA
| | - Vittoria Pagliarini
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; Laboratory of Neuroembryology, Fondazione Santa Lucia, 00143 Rome, Italy
| | - Laura Pontecorvo
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, 00166 Rome, Italy
| | - Antonella Antelmi
- Interinstitutional Multidisciplinary Biobank (BioBIM), IRCCS San Raffaele Pisana, 00166 Rome, Italy
| | - Andrea Fabbri
- Department of Systems Medicine, Endocrinology Unit, S. Eugenio & CTO A. Alesini Hospitals-ASL RM2, University Tor Vergata, Rome, Italy
| | - Giuseppe Rosano
- Cardiovascular & Cell Science Institute, St George's Hospital NHS Trust, University of London, London, United Kingdom; Department of Medical Sciences, IRCCS San Raffaele, Rome, Italy
| | - Iris Z Jaffe
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA, USA
| | - Massimiliano Caprio
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Pisana, 00166 Rome, Italy; Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy.
| |
Collapse
|
7
|
Jaisser F, Farman N. Emerging Roles of the Mineralocorticoid Receptor in Pathology: Toward New Paradigms in Clinical Pharmacology. Pharmacol Rev 2016; 68:49-75. [PMID: 26668301 DOI: 10.1124/pr.115.011106] [Citation(s) in RCA: 197] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The mineralocorticoid receptor (MR) and its ligand aldosterone are the principal modulators of hormone-regulated renal sodium reabsorption. In addition to the kidney, there are several other cells and organs expressing MR, in which its activation mediates pathologic changes, indicating potential therapeutic applications of pharmacological MR antagonism. Steroidal MR antagonists have been used for decades to fight hypertension and more recently heart failure. New therapeutic indications are now arising, and nonsteroidal MR antagonists are currently under development. This review is focused on nonclassic MR targets in cardiac, vascular, renal, metabolic, ocular, and cutaneous diseases. The MR, associated with other risk factors, is involved in organ fibrosis, inflammation, oxidative stress, and aging; for example, in the kidney and heart MR mediates hormonal tissue-specific ion channel regulation. Genetic and epigenetic modifications of MR expression/activity that have been documented in hypertension may also present significant risk factors in other diseases and be susceptible to MR antagonism. Excess mineralocorticoid signaling, mediated by aldosterone or glucocorticoids binding, now appears deleterious in the progression of pathologies that may lead to end-stage organ failure and could therefore benefit from the repositioning of pharmacological MR antagonists.
Collapse
Affiliation(s)
- F Jaisser
- INSERM UMR 1138 Team 1, Cordeliers Research Center, Pierre et Marie Curie University, Paris, France (F.J., N.F); and University Paris-Est Creteil, Creteil, France (F.J.)
| | - N Farman
- INSERM UMR 1138 Team 1, Cordeliers Research Center, Pierre et Marie Curie University, Paris, France (F.J., N.F); and University Paris-Est Creteil, Creteil, France (F.J.)
| |
Collapse
|
8
|
Epidermal Mineralocorticoid Receptor Plays Beneficial and Adverse Effects in Skin and Mediates Glucocorticoid Responses. J Invest Dermatol 2016; 136:2417-2426. [PMID: 27464843 DOI: 10.1016/j.jid.2016.07.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 06/30/2016] [Accepted: 07/11/2016] [Indexed: 12/20/2022]
Abstract
Glucocorticoids (GCs) regulate skin homeostasis and combat cutaneous inflammatory diseases; however, adverse effects of chronic GC treatments limit their therapeutic use. GCs bind and activate the GC receptor and the mineralocorticoid receptor (MR), transcription factors that recognize identical hormone responsive elements. Whether epidermal MR mediates beneficial or deleterious GC effects is of great interest for improving GC-based skin therapies. MR epidermal knockout mice exhibited increased keratinocyte proliferation and differentiation and showed resistance to GC-induced epidermal thinning. However, crucially, loss of epidermal MR rendered mice more sensitive to inflammatory stimuli and skin damage. MR epidermal knockout mice showed increased susceptibility to phorbol 12-myristate 13-acetate-induced inflammation with higher cytokine induction. Likewise, cultured MR epidermal knockout keratinocytes had increased phorbol 12-myristate 13-acetate-induced NF-κB activation, highlighting an anti-inflammatory function for MR. GC-induced transcription was reduced in MR epidermal knockout keratinocytes, at least partially due to decreased recruitment of GC receptor to hormone responsive element-containing sequences. Our results support a role for epidermal MR in adult skin homeostasis and demonstrate nonredundant roles for MR and GC receptor in mediating GC actions.
Collapse
|
9
|
Lother A, Fürst D, Bergemann S, Gilsbach R, Grahammer F, Huber TB, Hilgendorf I, Bode C, Moser M, Hein L. Deoxycorticosterone Acetate/Salt–Induced Cardiac But Not Renal Injury Is Mediated By Endothelial Mineralocorticoid Receptors Independently From Blood Pressure. Hypertension 2016; 67:130-8. [DOI: 10.1161/hypertensionaha.115.06530] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 10/12/2015] [Indexed: 12/23/2022]
Affiliation(s)
- Achim Lother
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| | - David Fürst
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| | - Stella Bergemann
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| | - Ralf Gilsbach
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| | - Florian Grahammer
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| | - Tobias B. Huber
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| | - Ingo Hilgendorf
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| | - Christoph Bode
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| | - Martin Moser
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| | - Lutz Hein
- From the Department of Cardiology and Angiology I, Heart Center (A.L., I.H., C.B., M.M.), Institute of Experimental and Clinical Pharmacology and Toxicology (A.L., D.F., S.B., R.G., L.H.), Renal Division, Department of Medicine (F.G., T.B.H.), and BIOSS Centre for Biological Signaling Studies (T.B.H., L.H.), University of Freiburg, Freiburg, Germany
| |
Collapse
|
10
|
Hwang MH, Yoo JK, Luttrell M, Kim HK, Meade TH, English M, Talcott S, Jaffe IZ, Christou DD. Acute effect of mineralocorticoid receptor antagonism on vascular function in healthy older adults. Exp Gerontol 2015; 73:86-94. [PMID: 26639352 DOI: 10.1016/j.exger.2015.11.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 11/04/2015] [Accepted: 11/26/2015] [Indexed: 12/27/2022]
Abstract
Mineralocorticoid receptor (MR) activation by aldosterone may regulate vascular function in health or contribute to vascular dysfunction in cardiovascular disease. Whether the effects are beneficial or detrimental to vascular function appear to be dependent on the integrity of the vascular endothelium and whether the responses are short-term or chronic. Acute modulation of MR activation has resulted in conflicting outcomes on vascular function in young healthy adults. Little is known about the vascular role of aldosterone and MR activation in healthy human aging. The primary objective of this study was to examine whether acute inhibition of MR by the selective antagonist eplerenone, influences vascular function in healthy older adults. We performed a randomized, double-blind, placebo-controlled crossover study in 22 adults (61±1 years; mean±SE, 53-79 years) who were free from overt clinical cardiovascular disease. We measured brachial artery flow-mediated endothelium-dependent dilation and endothelium-independent dilation to sublingual nitroglycerin (0.4 mg) following eplerenone (100 mg/dose, 2 doses, 24h between doses) or placebo. In response to acute MR antagonism, flow-mediated dilation decreased by 19% (from 6.9±0.5 to 5.6±0.6%, P=0.02; placebo vs. eplerenone). Endothelial nitric oxide synthase (eNOS) activity also decreased following MR antagonism based on the ratio of phosphorylated eNOS(Ser1177) to total eNOS (1.53±0.08 vs. 1.29±0.06, P=0.02). Nitroglycerin-induced dilation and blood pressure were unaffected (nitroglycerin-induced dilation: 21.9±1.9 vs. 21.0±1.5%, P=0.5 and systolic/diastolic blood pressure: 135/77±4/2 vs. 134/77±4/2 mmHg, P≥0.6). In conclusion, acute MR antagonism impairs vascular endothelial function in healthy older adults without influencing vascular smooth muscle responsiveness to exogenous nitric oxide or blood pressure.
Collapse
Affiliation(s)
- Moon-Hyon Hwang
- Dept of Applied Physiology & Kinesiology, University of Florida, Gainesville, FL, United States; Division of Health and Exercise Science, Incheon National University, Incheon, Korea
| | - Jeung-Ki Yoo
- Dept of Applied Physiology & Kinesiology, University of Florida, Gainesville, FL, United States
| | - Meredith Luttrell
- Dept of Human Physiology, University of Oregon, Eugene, OR, United States
| | - Han-Kyul Kim
- Dept of Applied Physiology & Kinesiology, University of Florida, Gainesville, FL, United States
| | - Thomas H Meade
- Dept of Cardiology, Baylor Scott & White Health, College Station, TX, United States; Texas A&M University Health Science Center, Bryan, TX, United States
| | - Mark English
- Dept of Family & Community Medicine, Baylor Scott & White Health, College Station, TX, United States
| | - Susanne Talcott
- Dept of Nutrition and Food Science and Dept of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX, United States
| | - Iris Z Jaffe
- Molecular Cardiology Research Institute and Division of Cardiology, Department of Medicine, Tufts Medical Center, Boston, MA, United States
| | - Demetra D Christou
- Dept of Applied Physiology & Kinesiology, University of Florida, Gainesville, FL, United States.
| |
Collapse
|
11
|
Gilet A, Zou F, Boumenir M, Frippiat JP, Thornton SN, Lacolley P, Ropars A. Aldosterone up-regulates MMP-9 and MMP-9/NGAL expression in human neutrophils through p38, ERK1/2 and PI3K pathways. Exp Cell Res 2014; 331:152-163. [PMID: 25449697 DOI: 10.1016/j.yexcr.2014.11.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 11/04/2014] [Accepted: 11/09/2014] [Indexed: 01/08/2023]
Abstract
Aldosterone and mineralocorticoid receptors are important regulators of inflammation. During this process, chemokines and extracellular matrix degradation by matrix metalloproteases, such as MMP-9, help leukocytes reaching swiftly and infiltrating the injured tissue, two processes essential for tissue repair. Leukocytes, such as neutrophils, are a rich source of MMP-9 and possess mineralocorticoid receptors (MR). The aim of our study was to investigate whether aldosterone was able to regulate proMMP-9, active MMP-9 and MMP-9/NGAL production in human neutrophils. Here we show that aldosterone increased MMP-9 mRNA in a dose- and time-dependent manner. This hormone up-regulated also dose-dependently proMMP-9 and active MMP-9 protein release as well as the MMP-9/NGAL protein complex. PI3K, p38 and ERK1/2 inhibition diminished these aldosterone-induced neutrophil productions. Furthermore, spironolactone, a MR antagonist, counteracted aldosterone-induced increases of proMMP-9, active MMP-9 and MMP-9/NGAL complex. These findings indicate that aldosterone could participate in tissue repair by modulating neutrophil activity and favoring extracellular matrix degradation.
Collapse
Affiliation(s)
- Alexandre Gilet
- (a)University of Lorraine, UMR_S U1116 (ex-U961 UHP-INSERM), Vandoeuvre-les-Nancy, France
| | - Feng Zou
- (a)University of Lorraine, UMR_S U1116 (ex-U961 UHP-INSERM), Vandoeuvre-les-Nancy, France; Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan 430056, Hubei Province, China
| | - Meriem Boumenir
- (a)University of Lorraine, UMR_S U1116 (ex-U961 UHP-INSERM), Vandoeuvre-les-Nancy, France
| | - Jean-Pol Frippiat
- EA7300, Stress Immunity Pathogens Laboratory, Lorraine University, Vandoeuvre-les-Nancy, France
| | - Simon N Thornton
- (a)University of Lorraine, UMR_S U1116 (ex-U961 UHP-INSERM), Vandoeuvre-les-Nancy, France
| | - Patrick Lacolley
- (a)University of Lorraine, UMR_S U1116 (ex-U961 UHP-INSERM), Vandoeuvre-les-Nancy, France
| | - Armelle Ropars
- (a)University of Lorraine, UMR_S U1116 (ex-U961 UHP-INSERM), Vandoeuvre-les-Nancy, France; EA7300, Stress Immunity Pathogens Laboratory, Lorraine University, Vandoeuvre-les-Nancy, France.
| |
Collapse
|
12
|
Ji WJ, Ma YQ, Zhou X, Zhang YD, Lu RY, Guo ZZ, Sun HY, Hu DC, Yang GH, Li YM, Wei LQ. Spironolactone attenuates bleomycin-induced pulmonary injury partially via modulating mononuclear phagocyte phenotype switching in circulating and alveolar compartments. PLoS One 2013; 8:e81090. [PMID: 24260540 PMCID: PMC3834272 DOI: 10.1371/journal.pone.0081090] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Accepted: 10/08/2013] [Indexed: 01/08/2023] Open
Abstract
Background Recent experimental studies provide evidence indicating that manipulation of the mononuclear phagocyte phenotype could be a feasible approach to alter the severity and persistence of pulmonary injury and fibrosis. Mineralocorticoid receptor (MR) has been reported as a target to regulate macrophage polarization. The present work was designed to investigate the therapeutic potential of MR antagonism in bleomycin-induced acute lung injury and fibrosis. Methodology/Principal Findings We first demonstrated the expression of MR in magnetic bead-purified Ly6G-/CD11b+ circulating monocytes and in alveolar macrophages harvested in bronchoalveolar lavage fluid (BALF) from C57BL/6 mice. Then, a pharmacological intervention study using spironolactone (20mg/kg/day by oral gavage) revealed that MR antagonism led to decreased inflammatory cell infiltration, cytokine production (downregulated monocyte chemoattractant protein-1, transforming growth factor β1, and interleukin-1β at mRNA and protein levels) and collagen deposition (decreased lung total hydroxyproline content and collagen positive area by Masson’ trichrome staining) in bleomycin treated (2.5mg/kg, via oropharyngeal instillation) male C57BL/6 mice. Moreover, serial flow cytometry analysis in blood, BALF and enzymatically digested lung tissue, revealed that spironolactone could partially inhibit bleomycin-induced circulating Ly6Chi monocyte expansion, and reduce alternative activation (F4/80+CD11c+CD206+) of mononuclear phagocyte in alveoli, whereas the phenotype of interstitial macrophage (F4/80+CD11c-) remained unaffected by spironolactone during investigation. Conclusions/Significance The present work provides the experimental evidence that spironolactone could attenuate bleomycin-induced acute pulmonary injury and fibrosis, partially via inhibition of MR-mediated circulating monocyte and alveolar macrophage phenotype switching.
Collapse
MESH Headings
- Acute Lung Injury/chemically induced
- Acute Lung Injury/drug therapy
- Acute Lung Injury/metabolism
- Acute Lung Injury/pathology
- Animals
- Antigens, CD/genetics
- Antigens, CD/metabolism
- Antigens, Ly/genetics
- Antigens, Ly/metabolism
- Bleomycin
- Bronchoalveolar Lavage Fluid/cytology
- Chemokine CCL2/genetics
- Chemokine CCL2/metabolism
- Gene Expression
- Interleukin-1beta/genetics
- Interleukin-1beta/metabolism
- Macrophages, Alveolar/drug effects
- Macrophages, Alveolar/metabolism
- Macrophages, Alveolar/pathology
- Male
- Mice
- Mice, Inbred C57BL
- Mineralocorticoid Receptor Antagonists/pharmacology
- Monocytes/drug effects
- Monocytes/metabolism
- Monocytes/pathology
- Phenotype
- Pulmonary Alveoli/drug effects
- Pulmonary Alveoli/metabolism
- Pulmonary Alveoli/pathology
- Pulmonary Fibrosis/chemically induced
- Pulmonary Fibrosis/drug therapy
- Pulmonary Fibrosis/metabolism
- Pulmonary Fibrosis/pathology
- Receptors, Mineralocorticoid/genetics
- Receptors, Mineralocorticoid/metabolism
- Spironolactone/pharmacology
- Transforming Growth Factor beta1/genetics
- Transforming Growth Factor beta1/metabolism
Collapse
Affiliation(s)
- Wen-Jie Ji
- Department of Respiratory and Critical Care Medicine, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Institute of Cardiovascular Disease and Heart Center, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
- * E-mail: (WJJ) ; (LQW)
| | - Yong-Qiang Ma
- Department of Respiratory and Critical Care Medicine, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
| | - Xin Zhou
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Institute of Cardiovascular Disease and Heart Center, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
| | - Yi-Dan Zhang
- Department of Respiratory and Critical Care Medicine, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
| | - Rui-Yi Lu
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Institute of Cardiovascular Disease and Heart Center, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
| | - Zhao-Zeng Guo
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Institute of Cardiovascular Disease and Heart Center, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
| | - Hai-Ying Sun
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Institute of Cardiovascular Disease and Heart Center, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
| | - Dao-Chuan Hu
- Department of Respiratory and Critical Care Medicine, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
| | - Guo-Hong Yang
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Institute of Cardiovascular Disease and Heart Center, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
| | - Yu-Ming Li
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Institute of Cardiovascular Disease and Heart Center, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
| | - Lu-Qing Wei
- Department of Respiratory and Critical Care Medicine, Pingjin Hospital, Logistics University of the Chinese People’s Armed Police Forces, Tianjin, China
- * E-mail: (WJJ) ; (LQW)
| |
Collapse
|
13
|
Ryan MJ. An update on immune system activation in the pathogenesis of hypertension. Hypertension 2013; 62:226-30. [PMID: 23734005 PMCID: PMC4365420 DOI: 10.1161/hypertensionaha.113.00603] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 05/04/2013] [Indexed: 12/22/2022]
Affiliation(s)
- Michael J Ryan
- University of Mississippi Medical Center, Department of Physiology and Biophysics, 2500 N State St, Jackson, MS 39216-4505.
| |
Collapse
|
14
|
Hou H, Zhou R, Jia Q, Li Q, Kang L, Jiao P, Li D, Jiang B. Citreoviridin enhances tumor necrosis factor-α-induced adhesion of human umbilical vein endothelial cells. Toxicol Ind Health 2013; 31:193-201. [DOI: 10.1177/0748233713483194] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Endothelial adhesion plays an important role in the process of atherosclerosis, which is regulated by endothelial adhesion molecules and chemoattractant molecules. In some areas of China, citreoviridin (CIT) is considered a risk factor for the development of atherosclerosis. Here, we investigated the role of CIT in adhesion of human umbilical vein endothelial cells (HUVECs) together with the stimulation of tumor necrosis factor-α (TNF-α). Adhesion of HUVECs to monocytes was analyzed by coculture experiments using U937 cells labeled with 2,7-bis(2-carboxyethyl)-5(6)-carboxyfluorescein acetoxymethylester. The expression of intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and E-selectin was determined by Western blot and enzyme-linked immunosorbent assay (ELISA). The expression of monocyte chemoattractant protein-1 (MCP-1) was measured by reverse transcription polymerase chain reaction and ELISA. The activation of nuclear factor-κB (NF-κB) was assessed by Western blot and immunofluorescence staining. CIT markedly increased TNF-α-induced HUVECs adhesion to monocytes and the expression levels of ICAM-1, VCAM-1, E-selectin, and MCP-1. TNF-α-induced nuclear translocation of NF-κB in HUVECs was significantly elevated by CIT. Our study demonstrates that CIT upregulates TNF-α-induced endothelial adhesion via increasing activation of NF-κB, which results in the expression of ICAM-1, VCAM-1, E-selectin, and MCP-1. CIT plays a pivotal role in the process of endothelial cell adhesion and may thereby play an important role in the improvement of atherosclerosis in areas of China that have a high prevalence of CIT contamination and atherosclerosis.
Collapse
Affiliation(s)
- Haifeng Hou
- Institute of Epidemiology, School of Public Health, Shandong University, Jinan, China
- Institute of Epidemiology, School of Public Health, Taishan Medical University, Taian, China
| | - Ru Zhou
- Institute of Epidemiology, School of Public Health, Taishan Medical University, Taian, China
| | - Qiang Jia
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Qunwei Li
- Institute of Epidemiology, School of Public Health, Taishan Medical University, Taian, China
| | - Li Kang
- Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Peng Jiao
- Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Dong Li
- Institute of Epidemiology, School of Public Health, Taishan Medical University, Taian, China
| | - Baofa Jiang
- Institute of Epidemiology, School of Public Health, Shandong University, Jinan, China
| |
Collapse
|
15
|
Abstract
Aldosterone and its receptor the mineralocorticoid receptor (MR) are best known for their regulation of fluid and electrolyte homeostasis in epithelial cells. However, it is now clear that MR are also expressed in a broad range of nonepithelial tissues including the cardiovascular system. In the heart and vascular tissues, pathological activation of MR promotes cardiovascular inflammation and remodeling for which there is increasing evidence that macrophages and other immune cells (e.g. T cells and dendritic cells) play a significant role. While the glucocorticoids and their receptors have well-described antiinflammatory actions in immune cells, a role for aldosterone and/or the MR in these cells is largely undefined. Emerging evidence, however, suggests that MR signaling may directly or indirectly promote proinflammatory responses in these immune cells. This review will discuss the current understanding of the role of corticosteroid receptors in macrophages and their effect on cardiovascular diseases involving inflammation.
Collapse
Affiliation(s)
- Jimmy Z Shen
- Prince Henry's Institute, of Medical Research. P.O. Box 5152, Clayton 3168, Australia
| | | |
Collapse
|
16
|
Bousquet E, Zhao M, Ly A, Leroux les Jardins G, Goldenberg B, Naud MC, Jonet L, Besson-Lescure B, Jaisser F, Farman N, De Kozak Y, Behar-Cohen F. The aldosterone-mineralocorticoid receptor pathway exerts anti-inflammatory effects in endotoxin-induced uveitis. PLoS One 2012; 7:e49036. [PMID: 23152847 PMCID: PMC3494666 DOI: 10.1371/journal.pone.0049036] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 10/03/2012] [Indexed: 01/09/2023] Open
Abstract
We have previously shown that the eye is a mineralocorticoid-sensitive organ and we now question the role of mineralocorticoid receptor (MR) in ocular inflammation. The endotoxin-induced uveitis (EIU), a rat model of human intraocular inflammation, was induced by systemic administration of lipopolysaccharide (LPS). Evaluations were made 6 and 24 hours after intraocular injection of aldosterone (simultaneous to LPS injection). Three hours after onset of EIU, the MR and the glucocorticoid metabolizing enzyme 11-beta hydroxysteroid dehydrogenase type 2 (11β-HSD2) expression were down-regulated in iris/ciliary body and the corticosterone concentration was increased in aqueous humor, altering the normal MR/glucocorticoid receptor (GR) balance. At 24 hours, the GR expression was also decreased. In EIU, aldosterone reduced the intensity of clinical inflammation in a dose-dependent manner. The clinical benefit of aldosterone was abrogated in the presence of the MR antagonist (RU26752) and only partially with the GR antagonist (RU38486). Aldosterone reduced the release of inflammatory mediators (6 and 24 hours: TNF-α, IFN-γ, MIP-1α) in aqueous humor and the number of activated microglia/macrophages. Aldosterone partly prevented the uveitis-induced MR down-regulation. These results suggest that MR expression and activation in iris/ciliary body could protect the ocular structures against damages induced by EIU.
Collapse
Affiliation(s)
- Elodie Bousquet
- INSERM U872, Université René Descartes Sorbonne Paris Cité, Team 17, Centre de Recherche des Cordeliers, Paris, France
- Université René Descartes Sorbonne, Paris Cité, France
| | - Min Zhao
- INSERM U872, Université René Descartes Sorbonne Paris Cité, Team 17, Centre de Recherche des Cordeliers, Paris, France
- Université René Descartes Sorbonne, Paris Cité, France
| | - André Ly
- INSERM U872, Université René Descartes Sorbonne Paris Cité, Team 17, Centre de Recherche des Cordeliers, Paris, France
- Université René Descartes Sorbonne, Paris Cité, France
| | - Guillaume Leroux les Jardins
- INSERM U872, Université René Descartes Sorbonne Paris Cité, Team 17, Centre de Recherche des Cordeliers, Paris, France
- Université René Descartes Sorbonne, Paris Cité, France
- Assistance Publique des Hôpitaux de Paris, Hôtel-Dieu, Paris, France
| | - Brigitte Goldenberg
- INSERM U872, Université René Descartes Sorbonne Paris Cité, Team 17, Centre de Recherche des Cordeliers, Paris, France
- Université René Descartes Sorbonne, Paris Cité, France
| | - Marie-Christine Naud
- INSERM U872, Université René Descartes Sorbonne Paris Cité, Team 17, Centre de Recherche des Cordeliers, Paris, France
- Université René Descartes Sorbonne, Paris Cité, France
| | - Laurent Jonet
- INSERM U872, Université René Descartes Sorbonne Paris Cité, Team 17, Centre de Recherche des Cordeliers, Paris, France
- Université René Descartes Sorbonne, Paris Cité, France
| | - Bernadette Besson-Lescure
- Plateforme technologique de phénotypage du petit animal et microdosages. IFR65/IRSSA, Hôpital Saint-Antoine, Paris, France
| | - Frederic Jaisser
- INSERM U872, Université Pierre et Marie Curie, Team 1, Centre de Recherche des Cordeliers, Paris, France
| | - Nicolette Farman
- INSERM U872, Université Pierre et Marie Curie, Team 1, Centre de Recherche des Cordeliers, Paris, France
| | - Yvonne De Kozak
- INSERM U872, Université René Descartes Sorbonne Paris Cité, Team 17, Centre de Recherche des Cordeliers, Paris, France
- Université René Descartes Sorbonne, Paris Cité, France
| | - Francine Behar-Cohen
- INSERM U872, Université René Descartes Sorbonne Paris Cité, Team 17, Centre de Recherche des Cordeliers, Paris, France
- Université René Descartes Sorbonne, Paris Cité, France
- Assistance Publique des Hôpitaux de Paris, Hôtel-Dieu, Paris, France
- * E-mail:
| |
Collapse
|
17
|
Latouche C, El Moghrabi S, Messaoudi S, Nguyen Dinh Cat A, Hernandez-Diaz I, Alvarez de la Rosa D, Perret C, López Andrés N, Rossignol P, Zannad F, Farman N, Jaisser F. Neutrophil gelatinase-associated lipocalin is a novel mineralocorticoid target in the cardiovascular system. Hypertension 2012; 59:966-72. [PMID: 22469622 DOI: 10.1161/hypertensionaha.111.187872] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mineralocorticoid receptor (MR) activation may be deleterious to the cardiovascular system, and MR antagonists improve morbidity and mortality of patients with heart failure. However, mineralocorticoid signaling in the heart remains largely unknown. Using a pan-genomic transcriptomic analysis, we identified neutrophil gelatinase-associated lipocalin (NGAL or lipocalin 2) as a strongly induced gene in the heart of mice with conditional and targeted MR overexpression in cardiomyocytes (whereas induction was low in glucocorticoid receptor-overexpressing mice). NGAL mRNA levels were enhanced after hormonal stimulation by the MR ligand aldosterone in cultured cardiac cells and in the heart of wild-type mice. Mineralocorticoid pathological challenge induced by nephrectomy/aldosterone/salt treatment upregulated NGAL expression in the heart and aorta and its plasma levels. We show evidence for MR binding to an NGAL promoter, providing a mechanism for NGAL regulation. We propose that NGAL may be a marker of mineralocorticoid-dependent injury in the cardiovascular system in mice.
Collapse
Affiliation(s)
- Celine Latouche
- Institut National de la Santé et de la Recherche Médicale UMR 872 Team 1, Centre de Recherche des Cordeliers, Université Pierre et Marie Curie, Paris, France
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
McCurley A, Jaffe IZ. Mineralocorticoid receptors in vascular function and disease. Mol Cell Endocrinol 2012; 350:256-65. [PMID: 21723914 PMCID: PMC3214604 DOI: 10.1016/j.mce.2011.06.014] [Citation(s) in RCA: 121] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 06/10/2011] [Accepted: 06/15/2011] [Indexed: 12/16/2022]
Abstract
The mineralocorticoid receptor (MR), a member of the steroid receptor family, regulates blood pressure by mediating the effects of the hormone aldosterone (Aldo) on renal sodium handling. Over the past decade, it has become clear that MR is expressed in the cardiovascular system and interest has grown in understanding the direct role of the MR in regulating vascular function and contributing to cardiovascular disease. This interest stems from multiple clinical studies in which drugs that decrease MR activation also reduce the incidence of heart attacks, strokes, and mortality out of proportion to modest changes in systemic blood pressure. The presence of functional mineralocorticoid receptors in vascular smooth muscle and endothelial cells is now well established and, while still controversial, data supports the vasculature as an Aldo-responsive tissue. This review summarizes recent advances in our understanding of the role of vascular MR in regulating normal vascular function and in promoting vascular disease. In vitro data, in vivo animal studies, and human data are reviewed suggesting a role for MR-activation in promoting vascular oxidative stress, inhibiting vascular relaxation, and contributing to vessel inflammation, fibrosis, and remodeling. These detrimental vascular effects of MR activation appear to be independent of changes in blood pressure and are synergistic with the presence of endothelial dysfunction or damage. Thus, in humans with underlying cardiovascular disease or cardiovascular risk factors, vascular MR activation may promote vascular aging and atherosclerosis thereby contributing to the pathophysiology of heart attack, stroke, and possibly even hypertension. Further exploration of the molecular mechanisms for the detrimental vascular effects of MR activation has the potential to identify novel therapeutic targets to prevent or treat common cardiovascular disorders.
Collapse
Affiliation(s)
- Amy McCurley
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Iris Z. Jaffe
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
- Department of Medicine, Division of Cardiology, Tufts Medical Center, Boston, Massachusetts, USA
| |
Collapse
|
19
|
Odermatt A, Kratschmar DV. Tissue-specific modulation of mineralocorticoid receptor function by 11β-hydroxysteroid dehydrogenases: an overview. Mol Cell Endocrinol 2012; 350:168-86. [PMID: 21820034 DOI: 10.1016/j.mce.2011.07.020] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 07/03/2011] [Accepted: 07/09/2011] [Indexed: 01/23/2023]
Abstract
In the last decade significant progress has been made in the understanding of mineralocorticoid receptor (MR) function and its implications for physiology and disease. The knowledge on the essential role of MR in the regulation of electrolyte concentrations and blood pressure has been significantly extended, and the relevance of excessive MR activation in promoting inflammation, fibrosis and heart disease as well as its role in modulating neuronal cell viability and brain function is now widely recognized. Despite considerable progress, the mechanisms of MR function in various cell-types are still poorly understood. Key modulators of MR function include the glucocorticoid receptor (GR), which may affect MR function by formation of heterodimers and by differential genomic and non-genomic responses on gene expression, and 11β-hydroxysteroid dehydrogenases (11β-HSDs), which determine the availability of intracellular concentrations of active glucocorticoids. In this review we attempted to provide an overview of the knowledge on MR expression with regard to the presence or absence of GR, 11β-HSD2 and 11β-HSD1/hexose-6-phosphate dehydrogenase (H6PDH) in various tissues and cell types. The consequences of cell-specific differences in the coexpression of MR with these proteins need to be further investigated in order to understand the role of this receptor in a given tissue as well as its systemic impact.
Collapse
Affiliation(s)
- Alex Odermatt
- Division of Molecular and Systems Toxicology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, Basel, Switzerland.
| | | |
Collapse
|
20
|
Hicks CW, Sweeney DA, Danner RL, Eichacker PQ, Suffredini AF, Feng J, Sun J, Behrend EN, Solomon SB, Natanson C. Efficacy of selective mineralocorticoid and glucocorticoid agonists in canine septic shock. Crit Care Med 2012; 40:199-207. [PMID: 21926575 PMCID: PMC3242885 DOI: 10.1097/ccm.0b013e31822efa14] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE Corticosteroid regimens that stimulate both mineralocorticoid and glucocorticoid pathways consistently reverse vasopressor-dependent hypotension in septic shock but have variable effects on survival. The objective of this study was to determine whether exogenous mineralocorticoid and glucocorticoid treatments have distinct effects and whether the timing of administration alters their effects in septic shock. DESIGN, SETTING, SUBJECTS, AND INTERVENTIONS: Desoxycorticosterone, a selective mineralocorticoid agonist; dexamethasone, a selective glucocorticoid agonist; and placebo were administered either several days before (prophylactic) or immediately after (therapeutic) infectious challenge and continued for 96 hrs in 74 canines with staphylococcal pneumonia. MEASUREMENTS AND MAIN RESULTS Effects of desoxycorticosterone and dexamethasone were different and opposite depending on timing of administration for survival (p = .05); fluid requirements (p = .05); central venous pressures (p ≤ .007); indicators of hemoconcentration (i.e., sodium [p = .0004], albumin [p = .05], and platelet counts [p = .02]); interleukin-6 levels (p = .04); and cardiac dysfunction (p = .05). Prophylactic desoxycorticosterone treatment significantly improved survival, shock, and all the other outcomes stated, but therapeutic desoxycorticosterone did not. Conversely, prophylactic dexamethasone was much less effective for improving these outcomes compared with therapeutic dexamethasone with the exception of shock reversal. Prophylactic dexamethasone given before sepsis induction also significantly reduced serum aldosterone and cortisol levels and increased body temperature and lactate levels compared with therapeutic dexamethasone (p ≤ .05), consistent with adrenal suppression. CONCLUSIONS In septic shock, mineralocorticoids are only beneficial if given prophylactically, whereas glucocorticoids are most beneficial when given close to the onset of infection. Prophylactic mineralocorticoids should be further investigated in patients at high risk to develop sepsis, whereas glucocorticoids should only be administered therapeutically to prevent adrenal suppression and worse outcomes.
Collapse
Affiliation(s)
- Caitlin W Hicks
- Cleveland Clinic Lerner College of Medicine, Cleveland, OH, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Wu VC, Lo SC, Chen YL, Huang PH, Tsai CT, Liang CJ, Kuo CC, Kuo YS, Lee BC, Wu EL, Lin YH, Sun YY, Lin SL, Chen JW, Lin SJ, Wu KD. Endothelial progenitor cells in primary aldosteronism: a biomarker of severity for aldosterone vasculopathy and prognosis. J Clin Endocrinol Metab 2011; 96:3175-83. [PMID: 21816781 DOI: 10.1210/jc.2011-1135] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
CONTEXT Primary aldosteronism (PA) is associated with a higher incidence of cardiovascular events, probably through mineralocorticoid receptor (MR)-dependent endothelial cell dysfunction, in comparison with essential hypertension (EH). OBJECTIVE Our objective was to investigate the number and function of endothelial progenitor cells (EPC) in PA and the relationship with arterial stiffness and disease progression. DESIGN AND SETTING We conducted a prospective study of the change of EPC number and outcome of PA patients after treatment at a tertiary medical center. PRIMARY OUTCOMES Changes in arterial stiffness and EPC number after treatment and the curability of hypertension were assessed. PATIENTS A total of 113 PA patients (87 patients diagnosed with aldosterone-producing adenoma, 26 with idiopathic hyperaldosteronism) and 55 patients with EH participated. RESULTS PA patients had higher arterial stiffness than EH patients (P = 0.006), with a lower numbers of circulating EPC and endothelial colony-forming units (P < 0.05). The differences were ameliorated at 6 months after unilateral adrenalectomy or treatment with spironolactone. Expression of MR was identified in the EPC. The number of circulating EPC was inversely correlated with the plasma aldosterone concentration (P = 0.021), arterial stiffness (P = 0.029) and serum high-sensitivity C-reactive protein (P = 0.03). High-dose aldosterone (10(-5) and 10(-6) m) attenuated EPC proliferation and angiogenesis in vitro. Among the 45 patients who underwent unilateral adrenalectomy, 32 (71%) were cured of hypertension. The preoperative number of EPC [log(EPC number percent) >-3.6] predicted the curability of hypertension after adrenalectomy (P = 0.003). CONCLUSIONS The relative deficiency of EPC in PA patients may contribute to aldosterone vasculopathy, which can be reversed by adrenalectomy and spironolactone. High aldosterone levels attenuated EPC proliferation and angiogenesis. Circulating EPC number may be a valuable biomarker to identify PA patients with a high incidence of arterial stiffness and to predict postoperative residual hypertension of aldosterone-producing adenoma.
Collapse
Affiliation(s)
- Vin-Cent Wu
- Department of Internal Medicine, Taipei Veterans General Hospital and Cardiovascular Research Center, National Yang-Ming University, Taipei 100, Taiwan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Walczak C, Gaignier F, Gilet A, Zou F, Thornton SN, Ropars A. Aldosterone increases VEGF-A production in human neutrophils through PI3K, ERK1/2 and p38 pathways. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2011; 1813:2125-32. [PMID: 21803079 DOI: 10.1016/j.bbamcr.2011.07.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 07/15/2011] [Accepted: 07/18/2011] [Indexed: 01/20/2023]
Abstract
Aldosterone is now recognised as an important actor in inflammation processes. Neoangiogenesis plays a crucial role in this complex process and immune cells, such as neutrophils, appear to be able to secrete different forms of (pro)angiogenic molecules, especially VEGF-A. The present work was undertaken to investigate whether aldosterone was able to regulate VEGF-A production in human neutrophils. The HL-60 (progranulocytic) cell line and human polymorphonuclear leukocytes were incubated for different time periods with aldosterone. Total cellular RNA extraction, submitted to reverse transcription and real time semi-quantitative PCR, was used to study VEGF-A mRNA expression. Cell supernatants were collected and ELISA tests were performed to analyse VEGF-A protein production. Aldosterone increased VEGF-A mRNA and protein expression in a dose- and time-dependent manner in both cell types. Inhibitors of PI3 kinases, ERK1/2, and to a lesser extent of p38 MAPK, decreased this aldosterone-induced immune cell activation. Western-blot performed with HL-60 cells confirmed that ERK1/2 and p38 MAPK pathways were stimulated by aldosterone. Mineralocorticoid receptors are implicated in this VEGF-A up-regulation because HL-60 cells pre-treated with spironolactone, an aldosterone receptor antagonist, diminished the effects of aldosterone. Aldosterone was also able to increase VEGF-A production of phagocytic cells such as neutrophils. These results suggest that this hormone could play an active role in the neovascularisation process by favouring entry of plasma proteins and fluids into the vascular wall, cell proliferation and tissue rebuilding.
Collapse
Affiliation(s)
- Cécile Walczak
- University of Henri Poincaré, Vandoeuvre-les-Nacy, France
| | | | | | | | | | | |
Collapse
|
23
|
Fraccarollo D, Bauersachs J. Cardiomyocyte Mineralocorticoid Receptor Function Post Myocardial Infarction. Trends Cardiovasc Med 2011; 21:42-7. [DOI: 10.1016/j.tcm.2012.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
24
|
Fraccarollo D, Berger S, Galuppo P, Kneitz S, Hein L, Schütz G, Frantz S, Ertl G, Bauersachs J. Deletion of Cardiomyocyte Mineralocorticoid Receptor Ameliorates Adverse Remodeling After Myocardial Infarction. Circulation 2011; 123:400-8. [DOI: 10.1161/circulationaha.110.983023] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Background—
Mineralocorticoid receptor (MR) blockade improves morbidity and mortality among patients with heart failure; however, the underlying mechanisms are still under investigation. We studied left ventricular remodeling after myocardial infarction in mice with cardiomyocyte-specific inactivation of the MR gene (MR
MLCCre
) that were generated with a conditional MR allele (MR
flox
) in combination with a transgene expressing Cre recombinase under control of the myosin light-chain (MLC2a) gene promoter.
Methods and Results—
Control (MR
flox/flox
, MR
flox/wt
) and MR
MLCCre
mice underwent coronary artery ligation. MR ablation had no detectable baseline effect on cardiac morphology and function. The progressive left ventricular chamber enlargement and functional deterioration in infarcted control mice, detected by echocardiography and conductance catheter analysis during the 8-week observation period, were substantially attenuated in MR
MLCCre
mice. Chronically infarcted MR
MLCCre
mice displayed attenuated pulmonary edema, reduced cardiac hypertrophy, increased capillary density, and reduced accumulation of extracellular matrix proteins in the surviving left ventricular myocardium. Moreover, cardiomyocyte-specific MR ablation prevented the increases in myocardial and mitochondrial O
2
·−
production and upregulation of the NADPH oxidase subunits Nox2 and Nox4. At 7 days, MR
MLCCre
mice exhibited enhanced infarct neovessel formation and collagen structural organization associated with reduced infarct expansion. Mechanistically, cardiomyocytes lacking MR displayed accelerated stress-induced activation and subsequent suppression of nuclear factor-κB and reduced apoptosis early after myocardial infarction.
Conclusion—
Cardiomyocyte-specific MR deficiency improved infarct healing and prevented progressive adverse cardiac remodeling, contractile dysfunction, and molecular alterations in ischemic heart failure, highlighting the importance of cardiomyocyte MR for heart failure development and progression.
Collapse
Affiliation(s)
- Daniela Fraccarollo
- From the Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Medizinische Klinik und Poliklinik I, Universitätsklinikum, Wuerzburg (D.F., P.G., S.F., G.E.); Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Deutsches Krebsforschungszentrum, Heidelberg (S.B., G.S.); Institut fuer Virologie and Immunbiologie, Universitaetsklinikum, Wuerzburg (S.K.); and Institut fuer Experimentelle und Klinische
| | - Stefan Berger
- From the Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Medizinische Klinik und Poliklinik I, Universitätsklinikum, Wuerzburg (D.F., P.G., S.F., G.E.); Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Deutsches Krebsforschungszentrum, Heidelberg (S.B., G.S.); Institut fuer Virologie and Immunbiologie, Universitaetsklinikum, Wuerzburg (S.K.); and Institut fuer Experimentelle und Klinische
| | - Paolo Galuppo
- From the Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Medizinische Klinik und Poliklinik I, Universitätsklinikum, Wuerzburg (D.F., P.G., S.F., G.E.); Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Deutsches Krebsforschungszentrum, Heidelberg (S.B., G.S.); Institut fuer Virologie and Immunbiologie, Universitaetsklinikum, Wuerzburg (S.K.); and Institut fuer Experimentelle und Klinische
| | - Susanne Kneitz
- From the Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Medizinische Klinik und Poliklinik I, Universitätsklinikum, Wuerzburg (D.F., P.G., S.F., G.E.); Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Deutsches Krebsforschungszentrum, Heidelberg (S.B., G.S.); Institut fuer Virologie and Immunbiologie, Universitaetsklinikum, Wuerzburg (S.K.); and Institut fuer Experimentelle und Klinische
| | - Lutz Hein
- From the Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Medizinische Klinik und Poliklinik I, Universitätsklinikum, Wuerzburg (D.F., P.G., S.F., G.E.); Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Deutsches Krebsforschungszentrum, Heidelberg (S.B., G.S.); Institut fuer Virologie and Immunbiologie, Universitaetsklinikum, Wuerzburg (S.K.); and Institut fuer Experimentelle und Klinische
| | - Günther Schütz
- From the Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Medizinische Klinik und Poliklinik I, Universitätsklinikum, Wuerzburg (D.F., P.G., S.F., G.E.); Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Deutsches Krebsforschungszentrum, Heidelberg (S.B., G.S.); Institut fuer Virologie and Immunbiologie, Universitaetsklinikum, Wuerzburg (S.K.); and Institut fuer Experimentelle und Klinische
| | - Stefan Frantz
- From the Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Medizinische Klinik und Poliklinik I, Universitätsklinikum, Wuerzburg (D.F., P.G., S.F., G.E.); Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Deutsches Krebsforschungszentrum, Heidelberg (S.B., G.S.); Institut fuer Virologie and Immunbiologie, Universitaetsklinikum, Wuerzburg (S.K.); and Institut fuer Experimentelle und Klinische
| | - Georg Ertl
- From the Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Medizinische Klinik und Poliklinik I, Universitätsklinikum, Wuerzburg (D.F., P.G., S.F., G.E.); Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Deutsches Krebsforschungszentrum, Heidelberg (S.B., G.S.); Institut fuer Virologie and Immunbiologie, Universitaetsklinikum, Wuerzburg (S.K.); and Institut fuer Experimentelle und Klinische
| | - Johann Bauersachs
- From the Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Medizinische Klinik und Poliklinik I, Universitätsklinikum, Wuerzburg (D.F., P.G., S.F., G.E.); Klinik fuer Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover (D.F., P.G., J.B.); Deutsches Krebsforschungszentrum, Heidelberg (S.B., G.S.); Institut fuer Virologie and Immunbiologie, Universitaetsklinikum, Wuerzburg (S.K.); and Institut fuer Experimentelle und Klinische
| |
Collapse
|
25
|
Queisser N, Oteiza PI, Stopper H, Oli RG, Schupp N. Aldosterone induces oxidative stress, oxidative DNA damage and NF-κB-activation in kidney tubule cells. Mol Carcinog 2010; 50:123-35. [PMID: 21229609 DOI: 10.1002/mc.20710] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 10/13/2010] [Accepted: 10/22/2010] [Indexed: 12/12/2022]
Abstract
An increase of the mineralocorticoid aldosterone is induced by a stimulated renin-angiotensin system in a subgroup of hypertensive patients. Epidemiological studies find higher cancer mortality in hypertensive patients and an increased risk to develop kidney cancer. This work investigated the involvement of oxidants in the genotoxicity of aldosterone and on a potential activation of transcription factor nuclear factor-κB (NF-κB) in kidney tubule cells. Aldosterone, at concentrations as low as 1 nM caused a significant increase of DNA damage, as assessed by comet assay and micronucleus frequency test. Aldosterone also led to a dose-dependent activation of NF-κB. Time courses of DNA damage and NF-κB-activation showed that these effects already occurred after 5 and 3 min of aldosterone exposure, respectively, suggesting non-genomic events of the hormone. Antioxidants prevented aldosterone-induced DNA damage and NF-κB-activation, indicating the involvement of oxidants. In fact, aldosterone caused an increase in intracellular oxidant levels, and in particular of superoxide anions. As a consequence, increased levels of the oxidized DNA modification 7,8-dihydro-8-oxo-guanine were observed in aldosterone-treated kidney cells. Aldosterone-induced DNA damage and NF-κB-activation was dependent on the involvement of the mineralocorticoid receptor. The induction of oxidant-mediated genotoxic effects, and of a long-term activation of the potentially oncogenic cell signal NF-κB by aldosterone could contribute to the increased kidney cancer incidence in hypertensive patients.
Collapse
Affiliation(s)
- Nina Queisser
- Department of Toxicology, University of Würzburg, Würzburg, Germany
| | | | | | | | | |
Collapse
|
26
|
Fukuda S, Horimai C, Harada K, Wakamatsu T, Fukasawa H, Muto S, Itai A, Hayashi M. Aldosterone-induced kidney injury is mediated by NFκB activation. Clin Exp Nephrol 2010; 15:41-9. [PMID: 21072674 PMCID: PMC7087855 DOI: 10.1007/s10157-010-0373-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Accepted: 10/13/2010] [Indexed: 12/14/2022]
Abstract
BACKGROUND Aldosterone induces inflammation and fibrosis in the kidney, while nuclear factor κB (NFκB) plays key roles in inflammation mediated by various cytokines. Here, we determined the roles of NFκB activation in aldosterone-induced kidney injury. METHODS We used unilaterally nephrectomized rats with or without continuous aldosterone infusion and 0.9% saline as drinking water for 3 weeks. IMD-1041, an IKKβ inhibitor, and spironolactone were orally administered to inhibit NFκB and mineralocorticoid receptor, respectively. RESULTS The aldosterone-infused rats exhibited severe kidney injury, hypertension, and increased expression of pro-inflammatory and fibrotic proteins, osteopontin, fibrinogen, collagen type I, and PAI-1. Western blotting confirmed NFκB activation by aldosterone by the increased amount of p65 in the nuclear fraction of the kidney, and oral IMD-1041 prevented the kidney injury and lessened the increase in pro-inflammatory and fibrotic proteins without significant changes in blood pressures. In addition, changes in angiotensin-converting enzyme 2 (ACE2), which has been found to act as a protective factor in various kidney injury models, were examined. Immunofluorescence studies revealed the presence of ACE2 in the brush-border membrane of the proximal convoluted tubules and markedly blunted ACE2 staining in aldosterone-infused rats. The decrease in amount of ACE2 protein was confirmed by Western blotting, and IMD-1041 also prevented the decrease in ACE2. The administration of spironolactone also abolished the effects of aldosterone. CONCLUSION Our results suggest that aldosterone induces kidney injury via activation of NFκB and mineralocorticoid receptor, and that decreased ACE2 expression may play an important role in aldosterone-induced kidney injury.
Collapse
Affiliation(s)
- Seiichi Fukuda
- Department of Internal Medicine, International University of Health and Welfare, Mita Hospital, 1-4-3 Mita, Minato-ku, Tokyo 108-8329, Japan
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Abstract
PURPOSE OF REVIEW Aldosterone causes tissue inflammation leading to fibrosis and remodeling in the heart, vasculature, and kidney. We summarize recent data regarding the mechanism(s) through which aldosterone stimulates inflammation. RECENT FINDINGS Studies elucidate the cell-specific effects of mineralocorticoid receptor activation on inflammatory cell infiltration and adhesion, and highlight the role of the macrophage in the development of vascular collagen deposition and hypertension. Activation of nuclear factor-kappaB in vascular smooth muscle cells involves a complex interplay between the angiotensin subtype 1 (AT1) receptor and the mineralocorticoid receptor. Activation of the mineralocorticoid receptor by aldosterone stimulates an inflammatory phenotype in adipocytes and contributes to insulin resistance by increasing oxidative stress. SUMMARY Mechanistic studies of aldosterone-induced inflammation provide the rationale for an expanded therapeutic role for mineralocorticoid receptor antagonists and aldosterone synthase inhibitors.
Collapse
Affiliation(s)
- Kimberly C Gilbert
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-6602, USA
| | | |
Collapse
|
28
|
Current Opinion in Endocrinology, Diabetes & Obesity. Current world literature. Curr Opin Endocrinol Diabetes Obes 2010; 17:293-312. [PMID: 20418721 DOI: 10.1097/med.0b013e328339f31e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|