Perivascular Adipose Tissue-Enhanced Vasodilation in Metabolic Syndrome Rats by Apelin and N -Acetyl⁻l-Cysteine-Sensitive Factor(s)

Perivascular adipose tissue (PVAT) can regulate vascular tone. In mesenteric arteries of SHRSP.Z- /IzmDmcr rats (SHRSP.ZF) with metabolic syndrome, vascular dysfunction is compensated by PVAT-dependent mechanisms that disappear with increasing age. In this study, we investigated the mechanisms of th...

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Published in:International journal of molecular sciences 2018-12, Vol.20 (1), p.106
Main Authors: Kagota, Satomi, Maruyama-Fumoto, Kana, Iwata, Saki, Shimari, Miho, Koyanagi, Shiori, Shiokawa, Yayoi, McGuire, John J, Shinozuka, Kazumasa
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Language:English
Subjects:
Acetylcholine
Acetylcysteine
Adipose tissue
Age
Aging
Animal models
Arteries
Blood vessels
Body fat
Cardiovascular diseases
Endothelium
Hydrogen sulfide
Metabolic disorders
Metabolic syndrome
Nitric oxide
Obesity
Proteins
Vasodilation
Veins & arteries
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cited_by cdi_FETCH-LOGICAL-c478t-162a28eea667e402bbf3fc18a1f2211e3b3a04153110788014ff5258ea4da7573
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container_issue 1
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container_title International journal of molecular sciences
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creator Kagota, Satomi
Maruyama-Fumoto, Kana
Iwata, Saki
Shimari, Miho
Koyanagi, Shiori
Shiokawa, Yayoi
McGuire, John J
Shinozuka, Kazumasa
description Perivascular adipose tissue (PVAT) can regulate vascular tone. In mesenteric arteries of SHRSP.Z- /IzmDmcr rats (SHRSP.ZF) with metabolic syndrome, vascular dysfunction is compensated by PVAT-dependent mechanisms that disappear with increasing age. In this study, we investigated the mechanisms of the age-related changes and responsible factor(s) involved in the enhancing effects of mesenteric arterial PVAT in SHRSP.ZF. Acetylcholine- and sodium nitroprusside-induced relaxations of isolated arteries were greater with PVAT than without PVAT at 17 and 20 weeks of age (wks), and as expected, this enhancement by the presence of PVAT disappeared at 23 wks. PVAT mRNA levels of angiotensin II type 1 (AT1) receptor-associated protein was less and AT1 receptor was unchanged at 23 wks when compared to 20 wks. At 20 wks, the enhanced acetylcholine-induced relaxation by the presence of PVAT was inhibited by -acetyl-l-cysteine (NAC). Acetylcholine-induced relaxation of arteries without PVAT was increased in the presence of exogenously added apelin. PVAT mRNA level of apelin was higher in SHRSP.ZF than in control Wistar-Kyoto rats, and the level was decreased with aging. These results suggest that AT1 receptor activation in PVAT, and changes in the regulation of apelin and a NAC-sensitive factor are related to the age-dependent deterioration of the vasodilation enhancing effects of mesenteric arterial PVAT in SHRSP.ZF.
doi_str_mv 10.3390/ijms20010106
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subjects Acetylcholine
Acetylcysteine
Adipose tissue
Age
Aging
Animal models
Arteries
Blood vessels
Body fat
Cardiovascular diseases
Endothelium
Hydrogen sulfide
Metabolic disorders
Metabolic syndrome
Nitric oxide
Obesity
Proteins
Vasodilation
Veins & arteries
title Perivascular Adipose Tissue-Enhanced Vasodilation in Metabolic Syndrome Rats by Apelin and N -Acetyl⁻l-Cysteine-Sensitive Factor(s)
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