Cardioprotective and Antifibrotic Effects of Low-Dose Renin–Angiotensin–Aldosterone System Inhibitors in Type 1 Diabetic Rat Model

Diabetic cardiovascular complications are associated with up to 50% mortality, and current therapies are not effective enough. Renin–angiotensin–aldosterone system inhibitors (RAASis) are the standard of care for diabetic patients with hypertension and albuminuria. Based on our previous studies repo...

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Main Authors: Dora B. Balogh, Agnes Molnar, Arianna Degi, Akos Toth, Lilla Lenart, Adar Saeed, Adrienn Barczi, Attila J. Szabo, Laszlo J. Wagner, Gyorgy Reusz, Andrea Fekete
Format: Article
Language:English
Published: MDPI AG 2023-12-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/24/23/17043
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author Dora B. Balogh
Agnes Molnar
Arianna Degi
Akos Toth
Lilla Lenart
Adar Saeed
Adrienn Barczi
Attila J. Szabo
Laszlo J. Wagner
Gyorgy Reusz
Andrea Fekete
author_facet Dora B. Balogh
Agnes Molnar
Arianna Degi
Akos Toth
Lilla Lenart
Adar Saeed
Adrienn Barczi
Attila J. Szabo
Laszlo J. Wagner
Gyorgy Reusz
Andrea Fekete
author_sort Dora B. Balogh
collection DOAJ
description Diabetic cardiovascular complications are associated with up to 50% mortality, and current therapies are not effective enough. Renin–angiotensin–aldosterone system inhibitors (RAASis) are the standard of care for diabetic patients with hypertension and albuminuria. Based on our previous studies reporting the renoprotective effects of low-dose RAASis, here, we hypothesized that low-dose RAASi treatment has cardioprotective and antifibrotic benefits in type 1 diabetes mellitus (T1DM). After five weeks of T1DM, adult male Wistar rats received low doses of ramipril, losartan, or eplerenone for two weeks. Heart rate, blood pressure, and pulse wave velocity (PWV) were recorded. Aortic intima–media thickness (IMT), collagen accumulation, and myocardial fibrosis were assessed. All RAASis reduced PWV elevation, prevented the progression of myocardial fibrosis, and normalized B-type natriuretic peptide, troponin I, and fibroblast growth factor 23 levels without affecting blood pressure. Interestingly, only eplerenone reversed the decline in Klotho levels and reduced IMT and fibrosis in the media of the aorta. Our comparative analysis suggests that mineralocorticoid receptor antagonists, particularly eplerenone, may offer superior efficacy in halting both the arterial and the myocardial injuries in T1DM compared to angiotensin-converting enzyme inhibitors or angiotensin II type 1 receptor blockers.
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spelling doaj.art-6d4cc210497e44c2aa2b30e04ac1b6982023-12-08T15:18:10ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672023-12-0124231704310.3390/ijms242317043Cardioprotective and Antifibrotic Effects of Low-Dose Renin–Angiotensin–Aldosterone System Inhibitors in Type 1 Diabetic Rat ModelDora B. Balogh0Agnes Molnar1Arianna Degi2Akos Toth3Lilla Lenart4Adar Saeed5Adrienn Barczi6Attila J. Szabo7Laszlo J. Wagner8Gyorgy Reusz9Andrea Fekete10MTA-SE Lendület “Momentum” Diabetes Research Group, 1083 Budapest, HungaryPediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, HungaryPediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, HungaryMTA-SE Lendület “Momentum” Diabetes Research Group, 1083 Budapest, HungaryMTA-SE Lendület “Momentum” Diabetes Research Group, 1083 Budapest, HungaryMTA-SE Lendület “Momentum” Diabetes Research Group, 1083 Budapest, HungaryMedical Imaging Center, Semmelweis University, 1082 Budapest, HungaryPediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, HungaryDepartment of Surgery, Transplantation and Gastroenterology, Semmelweis University, 1082 Budapest, HungaryPediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, HungaryMTA-SE Lendület “Momentum” Diabetes Research Group, 1083 Budapest, HungaryDiabetic cardiovascular complications are associated with up to 50% mortality, and current therapies are not effective enough. Renin–angiotensin–aldosterone system inhibitors (RAASis) are the standard of care for diabetic patients with hypertension and albuminuria. Based on our previous studies reporting the renoprotective effects of low-dose RAASis, here, we hypothesized that low-dose RAASi treatment has cardioprotective and antifibrotic benefits in type 1 diabetes mellitus (T1DM). After five weeks of T1DM, adult male Wistar rats received low doses of ramipril, losartan, or eplerenone for two weeks. Heart rate, blood pressure, and pulse wave velocity (PWV) were recorded. Aortic intima–media thickness (IMT), collagen accumulation, and myocardial fibrosis were assessed. All RAASis reduced PWV elevation, prevented the progression of myocardial fibrosis, and normalized B-type natriuretic peptide, troponin I, and fibroblast growth factor 23 levels without affecting blood pressure. Interestingly, only eplerenone reversed the decline in Klotho levels and reduced IMT and fibrosis in the media of the aorta. Our comparative analysis suggests that mineralocorticoid receptor antagonists, particularly eplerenone, may offer superior efficacy in halting both the arterial and the myocardial injuries in T1DM compared to angiotensin-converting enzyme inhibitors or angiotensin II type 1 receptor blockers.https://www.mdpi.com/1422-0067/24/23/17043diabetesdiabetic cardiomyopathyheart failurerenin–angiotensin–aldosterone system inhibitorsmyocardial fibrosisintima–media thickness
spellingShingle Dora B. Balogh
Agnes Molnar
Arianna Degi
Akos Toth
Lilla Lenart
Adar Saeed
Adrienn Barczi
Attila J. Szabo
Laszlo J. Wagner
Gyorgy Reusz
Andrea Fekete
Cardioprotective and Antifibrotic Effects of Low-Dose Renin–Angiotensin–Aldosterone System Inhibitors in Type 1 Diabetic Rat Model
International Journal of Molecular Sciences
diabetes
diabetic cardiomyopathy
heart failure
renin–angiotensin–aldosterone system inhibitors
myocardial fibrosis
intima–media thickness
title Cardioprotective and Antifibrotic Effects of Low-Dose Renin–Angiotensin–Aldosterone System Inhibitors in Type 1 Diabetic Rat Model
title_full Cardioprotective and Antifibrotic Effects of Low-Dose Renin–Angiotensin–Aldosterone System Inhibitors in Type 1 Diabetic Rat Model
title_fullStr Cardioprotective and Antifibrotic Effects of Low-Dose Renin–Angiotensin–Aldosterone System Inhibitors in Type 1 Diabetic Rat Model
title_full_unstemmed Cardioprotective and Antifibrotic Effects of Low-Dose Renin–Angiotensin–Aldosterone System Inhibitors in Type 1 Diabetic Rat Model
title_short Cardioprotective and Antifibrotic Effects of Low-Dose Renin–Angiotensin–Aldosterone System Inhibitors in Type 1 Diabetic Rat Model
title_sort cardioprotective and antifibrotic effects of low dose renin angiotensin aldosterone system inhibitors in type 1 diabetic rat model
topic diabetes
diabetic cardiomyopathy
heart failure
renin–angiotensin–aldosterone system inhibitors
myocardial fibrosis
intima–media thickness
url https://www.mdpi.com/1422-0067/24/23/17043
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