نتایج جستجو برای: l arginine
تعداد نتایج: 638900 فیلتر نتایج به سال:
BACKGROUND The inducible nitric-oxide synthase (iNOS) synthesizes NO from L-arginine. Availability of L-arginine is maintained by a lipopolysaccharide (LPS)-induced induction of the CAT-2B amino acids transporter. Recently, we could show that the cardiovascular hormone atrial natriuretic peptide (ANP) inhibits the induction of iNOS in LPS-stimulated macrophages via its guanylate cyclase-coupled...
background: lipid peroxidation is known to cause various impairments to sperm cells and may play a major role in the etiology of male infertility. asthenospermia is the main factor of male infertility and has significantly higher level of peroxidation than in normozoospermic males. materials and methods: using thiobarbituric acid (tba) assay procedure, we have determined the level of lipid pero...
BACKGROUND L-Arginine has been shown to induce fluid secretion in human jejunum. Nitric oxide, a derivative of L-arginine is thought to have an important role as an intestinal secretagogue. AIM To determine the effect of L-arginine and the nitric oxide synthase inhibitor, nitro L-arginine methyl ester (L-NAME), on fluid and electrolyte movement in rat jejunum. METHODS A 25 cm segment of rat...
Background and Objective: Evidence exist that polycystic ovarian syndrome (PCOS) is responsible for a high percentage of women infertility during reproductive age. In this study, the correction of this problem by hyper-activation of nitric oxide (NO) system was studied in rats. Materials and Methods: Female Wistar rats (weighing 200-250 g) were kept as virgin diestrous under standard condit...
Changes in extra and intracellular neurotransmitter amino acids concentration in the early stage of acute cerebral ischemia have been reported. In this the study, serum level of gamma aminobutyric acid (GABA) and L-Arginine in acute ischemic stroke patients was assessed. 60 patients with acute ischemic stroke and sixthy healthy volunteers as a control group were assessed. Serum GABA was measure...
background: identifying new ways to decrease adiposity will be very valuable for health. the aim of this study was to find out whether l-arginine (arg) and selenium alone or together can increase the effect of hypocaloric diet enriched in legumes (hdel) on anthropometric measures in healthy obese women. methods: this randomized, double-blind, placebo-controlled trial was undertaken in 84 health...
This study characterizes the effects of L-arginine and NG-monomethyl L-arginine on dilator responsiveness of vascular tissue from Wistar-Kyoto rats and stroke-prone spontaneously hypertensive rats. Rings of abdominal aorta were suspended in tissue baths for measurement of isometric force. After contraction induced by phenylephrine, cumulative addition of acetylcholine, L-arginine, or A23187 to ...
This study examined the contribution of nitric oxide (NO) to the susceptibility or resistance to the hypertensive effects of high sodium chloride (8.0% NaCl) intake in young Dahl/Rapp salt-sensitive (SS/Jr) and salt-resistant (SR/Jr) rats. Using NG-monomethyl-L-arginine (L-NMMA) as a probe for NO production in vivo, we found that increasing dietary sodium chloride increased NO activity in salt-...
Enhanced arginase-induced arginine consumption is believed to play a key role in the pathogenesis of sickle cell disease-induced end organ failure. Enhancement of arginine availability with L-arginine supplementation exhibited less consistent results; however, L-citrulline, the precursor of L-arginine, may be a promising alternative. In this study, we determined the effects of L-citrulline comp...
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