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Protective effects of grape seed proanthocyanidins on cardiovascular remodeling in DOCA-salt hypertension rats

机译:葡萄籽原花青素对DOCA-盐高血压大鼠心血管重构的保护作用

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摘要

Cardiovascular remodeling, as a hallmark of hypertension-induced pathophysiology, causes substantial cardiovascular morbidity and mortality. There is increasing evidence that has demonstrated a broad spectrum of pharmacological and therapeutic benefits of grape seed proanthocyanidins (GSP) against oxidative stress and cardiovascular diseases. In this study, 180- to 200-g SD rats treated with DOCA (120 mg/week sc with 1% NaCl and 02% KCl in drinking water) and GSP (150, 240, 384 mg/kg) or amlodipine (ALM) (5 mg/kg) for 4 weeks were recruited. The protective effects of GSP on blood pressure and cardiovascular remodeling in rats with DOCA-salt-induced hypertension were investigated. Our results indicated that DOCA-salt could induce hypertension, cardiovascular remodeling and dysfunction, oxidative stress and the release of endothelin-1 (ET-1) and could increase JNK1/2 and p38MAPK phosphorylation. GSP or ALM treatments significantly improved hypertension, cardiovascular remodeling and dysfunction and oxidative stress, restrained the release of ET-1 and down-regulated the JNK1/2 and p38MAPK phosphorylation. These findings demonstrate that GSP has protective effects against increase of blood pressure induced by DOCA-salt hypertension and cardiovascular remodeling by inhibiting the reactive oxygen species/mitogen-activated protein kinase pathway via restraining the release of ET-1. (C) 2015 Elsevier Inc. All rights reserved.
机译:心血管重塑是高血压诱发的病理生理的标志,可导致大量的心血管疾病和死亡。越来越多的证据表明,葡萄籽原花青素(GSP)对氧化应激和心血管疾病具有广泛的药理和治疗作用。在这项研究中,对180至200 g的SD大鼠用DOCA(120 mg /周sc,饮用水中含1%NaCl和02%KCl)和GSP(150、240、384 mg / kg)或氨氯地平(ALM)治疗(5 mg / kg),持续4周。研究了GSP对DOCA盐诱导的高血压大鼠血压和心血管重塑的保护作用。我们的结果表明,DOCA-盐可诱发高血压,心血管重塑和功能障碍,氧化应激和内皮素-1(ET-1)的释放,并可能增加JNK1 / 2和p38MAPK磷酸化。 GSP或ALM治疗可显着改善高血压,心血管重塑,功能障碍和氧化应激,抑制ET-1的释放并下调JNK1 / 2和p38MAPK磷酸化。这些发现表明,GSP通过通过抑制ET-1的释放来抑制活性氧/丝裂原激活的蛋白激酶途径,从而具有防止DOCA-盐高血压引起的血压升高和心血管重塑的保护作用。 (C)2015 Elsevier Inc.保留所有权利。

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