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...

introduction: the relation between morphine and nitric oxide release has been shown. due to important role of nitric oxide in regulation of skin blood flow, the aim of this study was to investigate the effect of nitric oxide synthase inhibitor (l-name) and nitric oxide synthesis precursor (l-arginine) on skin blood flow of intact and morphine-dependent rats. methods: skin blood flow of hind paw...

nitric oxide (no) is a molecule required for many physiological functions, produced from l-arginine by no synthases (nos). it is a free radical, producing many reactive intermediates that account for its bioactivity. sustained induction of the inducible form of nos (inos) in chronic inflammation may be mutagenic, through no-mediated dna damage or hindrance to dna repair, and thus potentially ca...

objective(s): endometriosis is a complex gynecologic disease with unknown etiology. noscapine has been introduced as a cancer cell suppressor. endometriosis was considered as a cancer like disorder, the aim of present study was to investigate noscapine apoptotic effect on human endometriotic epithelial and stromal cells in vitro. materials and methods:in this in vitro study, endometrial biopsie...

diabetes is characterized by a nitric oxide deficiency at the wound site. diabetes is a factor that influences all stages of wound healing. in animals with acute experimental diabetes induced by streptozotocin (stz), the early inflammatory responses after wounding is impaired, fibroblast and endothelial cell proliferation is reduced as well as accumulation of reparative collagen and gain in wou...

Copper is one of the heavy metal in plant that causes toxicity at high concentration via producing reactive oxygen species. Nitric oxide can protect cells from oxidative stress produce by reactive oxygen species. Effect of different concentrations of copper (1000, 1500 and 2000 μM) and interaction with nitric oxide (100 and 150 μM) were studied on growth parameters (shoot and root length) and s...

clinical studies have shown that in pathological conditions such as endometriosis and reproductive tract infection (male and female) there is an activation status of macrophages that produce large quantities of nitric oxide (no) in addition to other effector molecules. large amounts of no may have embryotoxic roles and produce infertility. this study was designed to evaluate the effect of diffe...

background:   objective: the aim of this study was to evaluate the expression of enos in the fts of women with tep.   materials and methods: in this case-control study, a total number of 30fts samples were obtained from three groups including: 10 fts of women that bearing an ep, 10 fts from the non-pregnant women at luteal phase of the menstrual cycle, and 10 fts of healthy pregnant women (n=10...