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Chang J, Gao X, Yang F, Qiang P, Fan L, Liu Z, Shimosawa T, Xu Q, Chang Y. Esaxerenone Inhibits Interferon-γ Induced Pyroptosis of Macrophages in the Lungs of Aldosterone-treated Mice. Inflammation 2024:10.1007/s10753-024-02030-5. [PMID: 38713304 DOI: 10.1007/s10753-024-02030-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/08/2024] [Accepted: 04/16/2024] [Indexed: 05/08/2024]
Abstract
Lung immune cells such as lymphocytes and macrophages can induce an inflammatory response due to the activation of mineralocorticoid receptor (MR), which is manifested by the infiltration of inflammatory cells and the secretion of inflammatory cytokines and subsequent apoptosis, pyroptosis and necrosis of intrinsic lung cells and immune cells. Macrophages are immune cells that are abundant in the lung and act as the first line of defense against pathogens but are also aggravating factors of infection. The activation of the renin-angiotensin-aldosterone system (RAAS), especially aldosterone-stimulated MR activation, can induce macrophage and CD8+ T cell aggregation and the secretion of cytokines such as tumor necrosis factor-α (TNF-α) and interferon-gamma (IFN-γ). Increased IFN-γ secretion can induce macrophage pyroptosis and the release of interleukin 1-β (IL-1β), aggravating lung injury. In this study, lung injury in C57BL/6 mice was induced by subcutaneous micro-osmotic pump infusion of aldosterone. After 12 weeks of administration, the kidney, heart, blood vessels and lungs all showed obvious inflammatory injury, which manifested as rapid accumulation of macrophages. The overexpression of IFN-γ in the lungs of aldosterone-treated mice and the stimulation of MH-S and RAW264.7 alveolar macrophages (AMs) with aldosterone in vitro showed that IFN-γ induced pyroptosis of macrophages via the activation of the inflammasome, and the MR blocker esaxerenone effectively inhibited this effect and alleviated lung injury. In addition, IFN-γ secreted by CD8+ T cells is associated with macrophage pyroptosis. In conclusion, the inhibition of macrophage pyroptosis can effectively alleviate lung injury.
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Affiliation(s)
- Jingyue Chang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
| | - Xiaomeng Gao
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
| | - Fan Yang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
- Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
| | - Panpan Qiang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
- Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
| | - Lili Fan
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
| | - Ziqian Liu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China
| | - Tatsuo Shimosawa
- Department of Clinical Laboratory, School of Medicine, International University of Health and Welfare, Narita, 286-8686, Japan
| | - Qingyou Xu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China.
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China.
- Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China.
| | - Yi Chang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China.
- Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang, 050200, China.
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Daimon S. Improvement in proteinuria with sodium-glucose cotransporter 2 inhibitors and esaxerenone treatment in patients with chronic allograft kidney disease: A case report. Clin Nephrol Case Stud 2024; 12:26-31. [PMID: 38516340 PMCID: PMC10955327 DOI: 10.5414/cncs111078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 03/22/2023] [Indexed: 03/23/2024] Open
Abstract
Proteinuria is a predictor of end-stage renal disease. The effectiveness of an angiotensin-converting enzyme inhibitor or an angiotensin II receptor blocker for the reduction in urinary protein excretion and renoprotection in proteinuric chronic kidney disease patients is well known, and coadministration of and sodium-glucose cotransporter inhibitor and the mineralocorticoid receptor blocker eplerenone has recently demonstrated an additive albuminuria-lowering effect in chronic kidney disease patients. Proteinuria is also an independent predictor of end-stage renal disease in kidney transplant recipients. Sodium-glucose cotransporter 2 inhibitors were administered to a 60-year-old man with chronic allograft kidney disease who had increasing urinary protein excretion with valsartan treatment. Although urinary protein excretion decreased drastically, it later increased to the same levels. A nonsteroidal mineralocorticoid receptor blocker, esaxerenone, was added to these medications, again resulting in a decrease in urinary protein excretion. Although the long-term renoprotective effect is not known, these medicines are promising and safe agents to reduce urinary protein excretion in patients with chronic allograft kidney disease.
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Yarita-Kawana M, Kidoguchi S, Suehiro Y, Sugano N, Yokoo T. Bilateral or Unilateral Aldosterone Hypersecretion and Responsiveness to Therapy are Associated with Differences in Calcium/Phosphate Homeostasis in Patients with Primary Aldosteronism. Intern Med 2024:3116-23. [PMID: 38403766 DOI: 10.2169/internalmedicine.3116-23] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Abstract
Introduction Primary aldosteronism is characterized by the autonomous excretion of aldosterone, which may induce bone mineral disorders. Patients and methods A total of 96 patients with primary aldosteronism were analyzed to identify differences in the regulation of serum calcium/phosphate balance between patients with unilateral and bilateral aldosterone hypersecretion and to determine whether or not adrenalectomy or mineralocorticoid receptor blockers affected such differences. Results Serum phosphate concentrations were significantly lower in patients with unilateral aldosterone hypersecretion than in patients with bilateral aldosterone hypersecretion (2.96±0.45 vs. 3.36±0.55 mg/dL, P<0.05), and recovered after adrenalectomy (2.96±0.45 vs. 3.49±0.32 mg/dL, P<0.01). In patients with bilateral aldosterone hypersecretion, the baseline serum phosphate levels were significantly lower in responders to mineralocorticoid receptor blocker treatment, defined as post-treatment plasma renin activity ≥1 ng/mL/h, than in non-responders. In responders, these levels tended to recover after treatment. A weak negative correlation between the plasma aldosterone concentration (PAC) and serum phosphate was observed, but there were no associations between the PAC and serum calcium concentration or between the aldosterone renin ratio and serum calcium and phosphate concentrations. Conclusions The effects on calcium/phosphate homeostasis may differ according to the primary aldosteronism subtype.
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Affiliation(s)
- Miki Yarita-Kawana
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Japan
| | - Satoshi Kidoguchi
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Japan
| | - Yohei Suehiro
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Japan
| | - Naoki Sugano
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Japan
| | - Takashi Yokoo
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Japan
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Gao X, Chang J, Chang Y, Fan L, Liu Z, Zhang C, Shimosawa T, Yang F, Xu Q. Esaxerenone Inhibits Renal Angiogenesis and Endothelial-Mesenchymal Transition via the VEGFA and TGF-β1 Pathways in Aldosterone-Infused Mice. Int J Mol Sci 2023; 24:11766. [PMID: 37511521 PMCID: PMC10380380 DOI: 10.3390/ijms241411766] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/19/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Renal fibrosis is an inevitable process in the progression of chronic kidney disease (CKD). Angiogenesis plays an important role in this process. Vascular endothelial cells are involved in renal fibrosis by phenotypic transformation and secretion of extracellular matrix. Aldosterone stimulates mineralocorticoid receptor (MR) activation and induces inflammation, which is important for angiogenesis. Clinically, MR blockers (MRBs) have a protective effect on damaged kidneys, which may be associated with inhibition of angiogenesis. In this study, we used aldosterone-infused mice and found that aldosterone induced angiogenesis and that endothelial-mesenchymal transition (EndMT) in neovascular endothelial cells was involved in renal fibrosis. Notably, aldosterone induced inflammation and stimulated macrophages to secrete vascular endothelial growth factor (VEGF) A to regulate angiogenesis by activating MR, whereas EndMT occurred in response to transforming growth factor-β1 (TGF-β1) induction and participated in renal fibrosis. These effects were antagonized by the MRB esaxerenone. These findings suggest that reducing angiogenesis may be an effective strategy for treating renal fibrosis.
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Affiliation(s)
- Xiaomeng Gao
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Jingyue Chang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Yi Chang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
- Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Lili Fan
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Ziqian Liu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Cuijuan Zhang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
- Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Tatsuo Shimosawa
- Department of Clinical Laboratory, School of Medicine, International University of Health and Welfare, Narita 286-8686, Japan
| | - Fan Yang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
- Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Qingyou Xu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
- Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
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Kurata A, Eto T, Tsutsumi J, Igawa Y, Nishikawa Y, Ishizuka H. Bioequivalence of Esaxerenone Conventional Tablet and Orally Disintegrating Tablet: Two Single-Dose Crossover Studies in Healthy Japanese Men. Clin Pharmacol Drug Dev 2022; 11:957-965. [PMID: 35315257 PMCID: PMC9545664 DOI: 10.1002/cpdd.1087] [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: 12/06/2021] [Accepted: 02/07/2022] [Indexed: 11/08/2022]
Abstract
We assessed the bioequivalence of a single dose of 5-mg of esaxerenone administered as an orally disintegrating tablet (ODT) with the conventional oral tablet in healthy Japanese men. This single-center, open-label, randomized, two-drug, two-stage crossover, single-dose study was conducted in two parts. In study 1, both formulations were taken with water. In study 2, only the ODT formulation was taken without water. The primary outcome was the evaluation of bioequivalence of the ODT and conventional tablet using the pharmacokinetic (PK) parameters maximum plasma concentration (Cmax ) and area under the plasma concentration-time curve to the last quantifiable time (AUClast ). Plasma concentrations were measured using a validated liquid chromatography/mass spectrometry method and PK parameters were calculated by noncompartmental analysis. The ratios of the geometric least-squares mean (2-sided 90% confidence intervals [90%CIs]) for ODT with (study 1) and without (study 2) water to the conventional tablet were 1.03 (1.00-1.07) and 1.01 (0.96-1.06) for Cmax and 1.03 (1.00-1.07) and 0.96 (0.94-0.98) for AUClast , respectively. The 90%CIs fell within the predefined bioequivalence range of 0.80-1.25. Treatment-emergent adverse events were similar between both formulations. In conclusion, esaxerenone 5-mg ODT taken with or without water was bioequivalent to a single 5-mg conventional oral tablet.
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Affiliation(s)
- Akifumi Kurata
- Quantitative Clinical Pharmacology Department, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | | | - Junko Tsutsumi
- Data Intelligence Department, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Yoshiyuki Igawa
- Quantitative Clinical Pharmacology Department, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Yasuhiro Nishikawa
- Development Strategy & Planning Group, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Hitoshi Ishizuka
- Quantitative Clinical Pharmacology Department, Daiichi Sankyo Co., Ltd., Tokyo, Japan
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Kario K, Ito S, Itoh H, Rakugi H, Okuda Y, Yoshimura M, Yamakawa S. Effect of the Nonsteroidal Mineralocorticoid Receptor Blocker, Esaxerenone, on Nocturnal Hypertension: A Post Hoc Analysis of the ESAX-HTN Study. Am J Hypertens 2021; 34:540-551. [PMID: 33165570 PMCID: PMC8140658 DOI: 10.1093/ajh/hpaa155] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/27/2020] [Accepted: 10/02/2020] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Nocturnal hypertension is an important phenotype of abnormal diurnal blood pressure (BP) variability and a known risk marker for target organ damage and cardiovascular events. This study aimed to assess the differential BP-lowering effects of esaxerenone vs. eplerenone on nocturnal BP in hypertensive patients with different nocturnal dipping patterns. METHODS This was a post hoc analysis of the "Esaxerenone (CS-3150) Compared to Eplerenone in Patients with Essential Hypertension" study (NCT02890173), which was a phase 3, multicenter, randomized, controlled, double-blind, parallel-group clinical study conducted in Japan. Ambulatory BP monitoring data were collected. RESULTS Patients (n = 1,001) were randomized to esaxerenone 2.5 mg/day (n = 331) or 5 mg/day (n = 338), or eplerenone 50 mg/day (n = 332). Reductions in nighttime systolic BP (95% confidence interval) were significantly greater with 2.5 and 5 mg/day esaxerenone vs. eplerenone (-2.6 [-5.0, -0.2] and -6.4 mm Hg [-8.8, -4.0], respectively). Esaxerenone significantly reduced nighttime BP from baseline compared with eplerenone in non-dippers with previously uncontrolled BP. In addition, esaxerenone did not markedly alter nighttime BP in extreme dipper patients. In the esaxerenone 5 mg/day group, esaxerenone-induced decreases in nighttime BP were greater than eplerenone-induced decreases in older patients. CONCLUSIONS Esaxerenone may be an effective treatment option for nocturnal hypertension, especially in older patients and those with a non-dipper pattern of nocturnal BP.
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Affiliation(s)
- Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan
| | - Sadayoshi Ito
- Division of Nephrology, Endocrinology and Vascular Medicine, Department of Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan
- Katta General Hospital, Shiroishi, Japan
| | - Hiroshi Itoh
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Hiromi Rakugi
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Suita, Japan
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Takahashi M, Ubukata O, Homma T, Asoh Y, Honzumi M, Hayashi N, Saito K, Tsuruoka H, Aoki K, Hanzawa H. Crystal structure of the mineralocorticoid receptor ligand-binding domain in complex with a potent and selective nonsteroidal blocker, esaxerenone (CS-3150). FEBS Lett 2020; 594:1615-1623. [PMID: 31991486 DOI: 10.1002/1873-3468.13746] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/08/2020] [Accepted: 01/15/2020] [Indexed: 12/24/2022]
Abstract
Activation of the mineralocorticoid receptor (MR) has long been considered a risk factor for cardiovascular diseases. It has been reported that the novel MR blocker esaxerenone shows high potency and selectivity for MR in vitro as well as great antihypertensive and renoprotective effects in salt-sensitive hypertensive rats. Here, we determined the cocrystal structure of the MR ligand-binding domain (MR-LBD) with esaxerenone and found that esaxerenone binds to MR-LBD in a unique manner with large side-chain rearrangements, distinct from those of previously published MR antagonists. This structure also displays an antagonist form that has not been observed for MR previously. Such a unique binding mode of esaxerenone provides great insight into the novelty, potency, and selectivity of this novel antihypertensive drug.
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Affiliation(s)
- Mizuki Takahashi
- Structure-Based Drug Design Group, Organic Synthesis Department, Daiichi Sankyo RD Novare Co., Ltd., Tokyo, Japan
| | - Osamu Ubukata
- Protein Production Research Group, Biological Research Department, Daiichi Sankyo RD Novare Co., Ltd., Tokyo, Japan
| | - Tsuyoshi Homma
- Global Project Management Department, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Yusuke Asoh
- IT Strategy Department, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Masatoshi Honzumi
- Process Technology Research Laboratories, Daiichi Sankyo Co., Ltd., Kanagawa, Japan
| | - Noriyuki Hayashi
- Medicinal Chemistry Research Laboratories, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Keiji Saito
- Medicinal Chemistry Research Laboratories, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Hiroyuki Tsuruoka
- Intellectual property department, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Kazumasa Aoki
- Medicinal Chemistry Research Laboratories, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Hiroyuki Hanzawa
- Structure-Based Drug Design Group, Organic Synthesis Department, Daiichi Sankyo RD Novare Co., Ltd., Tokyo, Japan
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Ames MK, Atkins CE, Pitt B. The renin-angiotensin-aldosterone system and its suppression. J Vet Intern Med 2019; 33:363-382. [PMID: 30806496 PMCID: PMC6430926 DOI: 10.1111/jvim.15454] [Citation(s) in RCA: 201] [Impact Index Per Article: 40.2] [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: 09/01/2018] [Accepted: 01/30/2019] [Indexed: 12/11/2022] Open
Abstract
Chronic activation of the renin-angiotensin-aldosterone system (RAAS) promotes and perpetuates the syndromes of congestive heart failure, systemic hypertension, and chronic kidney disease. Excessive circulating and tissue angiotensin II (AngII) and aldosterone levels lead to a pro-fibrotic, -inflammatory, and -hypertrophic milieu that causes remodeling and dysfunction in cardiovascular and renal tissues. Understanding of the role of the RAAS in this abnormal pathologic remodeling has grown over the past few decades and numerous medical therapies aimed at suppressing the RAAS have been developed. Despite this, morbidity from these diseases remains high. Continued investigation into the complexities of the RAAS should help clinicians modulate (suppress or enhance) components of this system and improve quality of life and survival. This review focuses on updates in our understanding of the RAAS and the pathophysiology of AngII and aldosterone excess, reviewing what is known about its suppression in cardiovascular and renal diseases, especially in the cat and dog.
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Affiliation(s)
- Marisa K Ames
- Department of Clinical Sciences, College of Veterinary Medicine, Colorado State University, Fort Collins, Colorado
| | - Clarke E Atkins
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Bertram Pitt
- Department of Medicine, University of Michigan School of Medicine, Ann Arbor, Michigan
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Tomaschitz A, Fahrleitner-Pammer A, Pieske B, Verheyen N, Amrein K, Ritz E, Kienreich K, Horina JH, Schmidt A, Kraigher-Krainer E, Colantonio C, Meinitzer A, Pilz S. Effect of eplerenone on parathyroid hormone levels in patients with primary hyperparathyroidism: a randomized, double-blind, placebo-controlled trial. BMC Endocr Disord 2012; 12:19. [PMID: 22974443 PMCID: PMC3515510 DOI: 10.1186/1472-6823-12-19] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [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: 02/15/2012] [Accepted: 08/31/2012] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Increasing evidence suggests the bidirectional interplay between parathyroid hormone and aldosterone as an important mechanism behind the increased risk of cardiovascular damage and bone disease observed in primary hyperparathyroidism. Our primary object is to assess the efficacy of the mineralocorticoid receptor-blocker eplerenone to reduce parathyroid hormone secretion in patients with parathyroid hormone excess. METHODS/DESIGN Overall, 110 adult male and female patients with primary hyperparathyroidism will be randomly assigned to eplerenone (25 mg once daily for 4 weeks and 4 weeks with 50 mg once daily after dose titration] or placebo, over eight weeks. Each participant will undergo detailed clinical assessment, including anthropometric evaluation, 24-h ambulatory arterial blood pressure monitoring, echocardiography, kidney function and detailed laboratory determination of biomarkers of bone metabolism and cardiovascular disease.The study comprises the following exploratory endpoints: mean change from baseline to week eight in (1) parathyroid hormone(1-84) as the primary endpoint and (2) 24-h systolic and diastolic ambulatory blood pressure levels, NT-pro-BNP, biomarkers of bone metabolism, 24-h urinary protein/albumin excretion and echocardiographic parameters reflecting systolic and diastolic function as well as cardiac dimensions, as secondary endpoints. DISCUSSION In view of the reciprocal interaction between aldosterone and parathyroid hormone and the potentially ensuing target organ damage, the EPATH trial is designed to determine whether eplerenone, compared to placebo, will effectively impact on parathyroid hormone secretion and improve cardiovascular, renal and bone health in patients with primary hyperparathyroidism. TRIAL REGISTRATION ISRCTN33941607.
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Affiliation(s)
- Andreas Tomaschitz
- Department of Cardiology, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria
| | - Astrid Fahrleitner-Pammer
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria
| | - Burkert Pieske
- Department of Cardiology, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria
| | - Nicolas Verheyen
- Department of Cardiology, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria
| | - Karin Amrein
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria
| | - Eberhard Ritz
- Department of Medicine, Division of Nephrology, University Hospital Heidelberg, Heidelberg, Germany
| | - Katharina Kienreich
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria
| | - Jörg H Horina
- Department of Internal Medicine, Division of Nephrology, Medical University of Graz, Graz, Austria
| | - Albrecht Schmidt
- Department of Cardiology, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria
| | | | - Caterina Colantonio
- Department of Cardiology, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria
| | - Andreas Meinitzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - Stefan Pilz
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria
- Department of Epidemiology and Biostatistics and EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
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10
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Abstract
Spironolactone and eplerenone are widely used as mineralocorticoid antagonists. Spironolactone has several nonspecific actions including inhibition of androgen receptor and steroid hormone biosynthesis. While studies have shown that eplerenone does not exhibit nonspecific actions on androgen receptor, its effects on steroid hormone production have not been reported. Herein, the effects of eplerenone (0.1-30 microM) and spironolactone (0.1-30 microM) on steroid production were examined in human adrenocortical H295R cells. Spironolactone inhibited basal production of cortisol (91%) and aldosterone (53%). Treatment of H295R cells with angiotensin II (Ang II) for 24 h increased aldosterone production by 11-fold. Spironolactone inhibited Ang II stimulation of aldosterone production by 80%. Addition of pregnenolone increased aldosterone (9-fold) and cortisol (3-fold) production. Spironolactone inhibited pregnenolone metabolism to aldosterone (67%) and cortisol (74%). The inhibitory effects of spironolactone occurred at concentrations far higher than those needed to block mineralocorticoid receptor, suggesting an action directly on the enzymes involved in steroid production. In contrast, eplerenone did not inhibit basal, Ang II, forskolin, pregnenolone-stimulated cortisol, or aldosterone production. Together, these data demonstrate that opposed to spironolactone, pharmacologic concentrations of eplerenone do not inhibit adrenal cell aldosterone or cortisol production.
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Affiliation(s)
- Ping Ye
- Department of Physiology, Medical College of Georgia, 1120 15th Street, Augusta, GA 30912-3000, USA
| | - Takashi Yamashita
- Department of Pathology, Tohoku University School of Medicine, 980-8575 Sendai, Japan
| | - David M Pollock
- Vascular Biology Center, Medical College of Georgia, 1120 15th Street, Augusta, GA 30912-3000, USA
| | - Hironobu Sasano
- Department of Pathology, Tohoku University School of Medicine, 980-8575 Sendai, Japan
| | - William E Rainey
- Department of Physiology, Medical College of Georgia, 1120 15th Street, Augusta, GA 30912-3000, USA
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