نتایج جستجو برای: nω hydroxy nor l arginine
تعداد نتایج: 764458 فیلتر نتایج به سال:
BACKGROUND Vitamin D (vitD) and L-arginine have important antimycobacterial effects in humans. Adjunctive therapy with these agents has the potential to improve outcomes in active tuberculosis (TB). METHODS In a 4-arm randomised, double-blind, placebo-controlled factorial trial in adults with smear-positive pulmonary tuberculosis (PTB) in Timika, Indonesia, we tested the effect of oral adjunc...
We investigated nitric oxide (NO) production in Paramecium caudatum, and the role of NO production in population growth in culture and thermoregulation. Nitrite (NO2 -) concentration in media containing P. caudatum [6350 ± 390 (SD) paramecia/ml] was 2.37 ± 0.53 μM after 6 h, compared to 0.16 ± 0.06 μM in media alone (p<0.005), and the NO synthase (NOS) inhibitor, Nω-nitro-L-arginine methylester...
مقدمه: نیتریک اکساید (no) مولکول کوچک چربی دوستی است که توسط آنزیم نیتریک اکساید سنتاز از پیشساز l-arginine در بسیاری از اندامهای بدن تولید می شود. هدف: با توجه به نقش مهم نیتریک اکساید در بسیاری از فرایندهای بیولوژیک بدن خصوصاً سیستم قلبی- عروقی، هدف از انجام این مطالعه بررسی اثرات تحریکی و مهاری آن بر قلب است. مواد و روش ها: 40 سر موش صحرایی ماده نژاد ویستار با وزن 200-250 گرم و سن متوسط 8 ه...
Estrogen has antihypertensive and vasorelaxing properties, partly via activation of endothelial nitric-oxide synthase (eNOS). Recently, neuronal nitric-oxide synthase (nNOS) has been detected in vascular cells, although the significance of this is unclear. Estrogen was found to stimulate nNOS in certain cultured cells. We hypothesized that estrogen regulates vascular tone partly via endothelium...
In this study we tested the hypothesis that nitric oxide (NO), which function as a novel type of inter-cellular messenger in the central nervous system (CNS) participated in the facilitator effect of arginine vasopressin (AVP) on learning and memory. Recent investigations have provided evidences that inhibition of NO synthesis attenuated the vasodilatation caused by AVP, and inhibited the impro...
BACKGROUND Cholinergic enzyme activities are altered in hypertension, reflecting a low-grade inflammation. Regular physical exercise exerts anti-inflammatory effects and has been described as a coadjutant in the treatment of hypertension. In this study, we investigated the effect of 6 weeks of swimming training on cholinergic enzyme activities (acetylcholinesterase and butyrylcholinesterase) in...
Introduction: Cisplatin is a widely used anti-cancer drug, which its application is limited by nephrotoxicity. In this study, the effect of pretreatment with different l-arginine doses on Cisplatin-induced renal functional injury was investigated. Methods: 63 male rats were divided into 7 groups: In groups 3, 4, 5 and 6, 60 min before the Cisplatin injection (5mg/kg); L-Arginine with doses o...
Introduction: Due to controversies in different studies about the effects of L-arginine supplementation on athletic performance and cardiovascular risk factors, this study aimed to review the current evidence on the effects of L-arginine supplementation on athletic performance and cardiovascular risk factors. Methods: This study was done to summarize findings from earlier evidence on the effect...
in the present study, interactions between lead exposure with nitric oxide precursor (l-arginine) or nitric oxide synthase (nos) inhibitor (l-name) on naloxone-induced jumping and diarrhea in morphine-dependent mice were examined. chronic lead acetate (0.05%) exposure altered naloxone-induced jumping and diarrhea in mice. jumping was decreased after 7 days and was unchanged 14 and 28 days after...
BACKGROUND Nitric oxide (NO) has been reported to be a key mediator in hepatocyte proliferation during liver regeneration. NO is the oxidative metabolite of L-arginine, and is produced by a family of enzymes, collective termed nitric oxide synthase (NOS). Thus, administration of L-arginine might enhance liver regeneration after a hepatectomy. Another amino acid, L-glutamine, which plays an impo...
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