Home Bratislava Medical Journal 2021 Bratislava Medical Journal Vol.122, No.12, p.892–899, 2021

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Published Monthly, in English
Founded: 1919
ISSN 0006-9248
(E)ISSN 1336-0345

Impact factor 1.564


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Bratislava Medical Journal Vol.122, No.12, p.892–899, 2021

Title: A new perspective on the pleiotropic blood pressure improvement effect of sitagliptin: downregulation of miRNA-155 and miRNA-21
Author: M. Yilmaz-Bozoglan, K. Gul-Kahraman, I. Serhatlioglu, E. Onalan, M. C. Akkopru, E. Sahna

Abstract: INTRODUCTION: Deterioration of vascular responses is the crucial event in the initiation of cardiovascular problems in hypertension (HT) and diabetes mellitus (DM). A well-known oral antidiabetic, sitagliptin, has pleiotropic effects besides improving glycemic state in type-2 DM. This study aimed to investigate the therapeutic effect of sitagliptin on blood pressure with previously unassessed parameters of well-known pathophysiological processes and especially at the microRNA (miRNA) level where there are many unknowns.
METHODS: N-nitro-L-arginine methyl ester (L-NAME)-induced HT model was performed on nondiabetic male rats. Four groups (including 7 rats in each) were formed: normotensives, sitagliptin-treated, HT and sitagliptin-treated HT. Asymmetric dimethylarginine (ADMA), intercellular adhesion molecule-1 (ICAM-1) and tyrosine hydroxylase (TH), HT related miRNAs were evaluated. In-vitro vessel responses were observed.
RESULTS: L-NAME led to a significant increase in blood pressure. Hypertensives exhibited significantly increased contractile responses, consistent with increased ADMA, ICAM-1. Sitagliptin decreased TH levels but not statistically significantly. The new side of the study was the miRNA-21 and miRNA-155 expressions were in line with other parameters in both the HT and sitagliptin-treated HT groups.
CONCLUSION: Sitagliptin may control comorbidities, especially HT and introduces new targets to alleviate vascular responses. The new knowledge is; sitagliptin may show these effects through microRNAs (Tab. 2, Fig. 6, Ref. 46).

Keywords: endothelial dysfunction, inflammation, miRNA-21, miRNA-155, sitagliptin, blood pressure
Published online: 14-Dec-2021
Year: 2021, Volume: 122, Issue: 12 Page From: 892, Page To: 899

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