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Valsartan inhibits ET-1 effects

Kai-Lun Liang, Ping Fang, Qiu-Qiu Shi, Jie Su, Bo Li, Su-Hong Chen, Gui-Yuan Lv
This study aimed to investigate the antihypertensive effect and possible mechanism of Dendrobium officinale flos on hypertensive rats induced by high glucose and high fat compound alcohol. The hypertensive models were successfully made by high-glucose and high-fat diet, with gradient drinking for 4 weeks, and then divided into model control group, valsartan (5.7 mg·kg⁻¹) positive control group and D. officinale flos groups (3,1 g·kg⁻¹). After 6 weeks of treatment, the blood pressure of rats was measured regularly...
January 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Lin Tang, Run Yi, Bing Yang, Hui Li, Huijuan Chen, Zhangsuo Liu
AIM: To investigate the effect of angiotensin II AT1 receptor blocker valsartan on hypoxia-inducible factor (HIF)-1α-mediated gene activation and its association with renal interstitial fibrosis (RIF) in diabetic nephropathy rats. METHODS: Sprague-Dawley rats were randomly divided into 3 groups: control (C group), streptozocin-induced diabetic nephropathy (D group), and valsartan-treated D rats (T group). At end of the 4th, 8th and 12th week 6 rats from each group were sacrificed and blood, urine and kidneys were collected...
July 2012: Diabetes Research and Clinical Practice
Carsten Funke, Martin Farr, Bianca Werner, Sven Dittmann, Klaus Uberla, Cornelia Piper, Karsten Niehaus, Dieter Horstkotte
In viral myocarditis, adeno- and enteroviruses have most commonly been implicated as causes of infection. Both viruses require the human coxsackie-adenovirus receptor (CAR) to infect the myocardium. Due to its crucial role for viral entry, CAR-downregulation may lead to novel approaches for treatment for viral myocarditis. In this study, we report on pharmaceutical drug influences on CAR levels in human umbilical vein endothelial cells (HUVEC) and cervical carcinoma cells (HeLa) detected by immunoblotting, quantitative real time-PCR and cellular susceptibility to the cardiotropic coxsackie-B3 virus strain Nancy (CVB3)...
August 2010: Journal of General Virology
Anna Mitchell, Uljana Rushentsova, Winfried Siffert, Thomas Philipp, Rene R Wenzel
OBJECTIVE: We investigated the influence of angiotensin II receptor blockade on angiotensin II-induced, endothelin 1 (ET-1)-induced, and norepinephrine-induced vasoconstriction to further characterize interactions of the 3 major pressor systems. ET-1, angiotensin II, and norepinephrine act via G protein-coupled receptors with a possible involvement of the G-protein beta3 subunit (GNB3) C825T polymorphism. We studied the influence of this polymorphism on the responses to angiotensin II antagonism in the presence of ET-1, norepinephrine, and angiotensin II...
March 2006: Clinical Pharmacology and Therapeutics
T C Feng, W Y Ying, R J Hua, Y Y Ji, M de Gasparo
The effects of the specific angiotensin II (Ang II) AT1-receptor blocker valsartan on events related to restenosis were investigated in rabbits after common carotid balloon injury. Six animals were given valsartan from two days prior to injury until 14 days post-injury. Three control groups (n=6 in each group) were either sham-operated, untreated or treated with the angiotensin-converting enzyme (ACE) inhibitor,captopril. Both ACE inhibition and AT,-receptor blockade had marked effects on plasma levels of endothelin ET1, thromboxane TXB2 and 6-keto-PGF1-alpha...
March 2001: Journal of the Renin-angiotensin-aldosterone System: JRAAS
R B New, A C Sampson, M K King, J W Hendrick, M J Clair, J H McElmurray, J Mandel, R Mukherjee, M de Gasparo, F G Spinale
BACKGROUND: The goal of this study was to determine the comparative effects of angiotensin II type 1 (AT(1)) receptor inhibition alone, endothelin-1 (ET) receptor blockade alone, and combined receptor blockade on left ventricular (LV) function, contractility, and neurohormonal system activity in a model of congestive heart failure (CHF). METHODS AND RESULTS: Pigs were randomly assigned to each of 5 groups: (1) rapid atrial pacing (240 bpm) for 3 weeks (n=9), (2) concomitant AT(1) receptor blockade (valsartan, 3 mg/kg per day) and rapid pacing (n=8), (3) concomitant ET receptor blockade (bosentan, 50 mg/kg BID) and rapid pacing (n=8), (4) concomitant combined AT(1) and ET receptor inhibition and rapid pacing (n=8), and (5) sham-operated control (n=9)...
September 19, 2000: Circulation
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