نتایج جستجو برای: nnos

تعداد نتایج: 2006  

ژورنال: :پژوهنده 0
ساره امامی sareh emami گروه فیزیولوژی، دانشکده پزشکی هما مناهجی homa manaheji گروه فیزیولوژی، دانشکده پزشکی، مرکز تحقیقات نوروفیزیولوژی سمیرا دانیالی samira daniali گروه فیزیولوژی، دانشکده پزشکی

چکیده سابقه و هدف: اثر ضد دردها در افرادی که سوء مصرف به مواد اپیوئیدی دارند، کاهش می یابد. در ارتباط با نقش پروتیئن nnos در تحمل به مورفین گزارش هایی وجود دارد، ولی نقش آن در کاهش اثر ضد دردی بیحس کننده های موضعی در شرایط تحمل به مورفین مشخص نمی باشد. لذا در این پژوهش به نقش پروتئین nnos روی اثر ضد دردی بوپیواکائین در موش های صحرایی نر تحمل یافته به مورفین پرداخته شده است. مواد و روش ها: از مو...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2008
Xavier Gamé Julien Allard Ghislaine Escourrou Pierre Gourdy Ivan Tack Pascal Rischmann Jean-François Arnal Bernard Malavaud

Estrogens are known to modulate lower urinary tract (LUT) trophicity and neuronal nitric oxide synthase (nNOS) expression in several organs. The aim of this study was to explore the effects of endogenous and supraestrus levels of 17beta-estradiol (E2) on LUT and urethral nNOS expression and function. LUT function and histology and urethral nNOS expression were studied in adult female mice subje...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1998
S W Weiss D S Albers M J Iadarola T M Dawson V L Dawson D G Standaert

Nitric oxide (NO), an unconventional and diffusible neurotransmitter, is synthesized by nitric oxide synthase (NOS). NMDA glutamate receptors are potent regulators of NO synthesis. We have used dual-label immunofluorescence and confocal microscopy to examine forebrain neurons in the rat that contain high levels of neuronal NOS (nNOS) for the presence of the NMDAR1 receptor subunit protein and r...

Journal: :The anatomical record. Part A, Discoveries in molecular, cellular, and evolutionary biology 2006
Qiuju Yuan David E Scott Kwok-Fai So Wutian Wu

The present study investigated the immunohistochemical localization of neuronal nitric oxide synthase (nNOS) in the hypothalamoneurohypophyseal system (HNS) of the developing rats on postnatal day 1 (PN1), 7 (PN7), 14 (PN14), 21 (PN21), and the adult rats. The nNOS-positive neurons were not discernable in the supraoptic nucleus (SON), the paraventricular nucleus (PVN), and the median eminence (...

2016
Yin Hua Zhang

Hypertension is a prevalent condition worldwide and is the key risk factor for fatal cardiovascular complications, such as stroke, sudden cardiac death and heart failure. Reduced bioavailability of nitric oxide (NO) in the endothelium is an important precursor for impaired vasodilation and hypertension. In the heart, NO deficiency deteriorates the adverse consequences of pressure-overload and c...

Journal: :Journal of neurophysiology 2010
Yu-Long Li Hong Zheng Yanfeng Ding Harold D Schultz

Our previous studies show that a decrease in endogenous nitric oxide (NO) is involved in the blunted outward K(+) currents in carotid body (CB) glomus cells from chronic heart failure (CHF) rabbits. In the present study, we measured the effects of the neuronal nitric oxide synthase (nNOS) transgene on the K(+) currents in CB glomus cells from pacing-induced CHF rabbits. Using single-cell real-t...

2000
D. Desaiah S. L. N. Reddy S. Z. Imam S. F. Ali

Methamphetamine (METH) is a potent psychostimulant known to produce neurotoxicity. The dopaminergic pathway is particularly sensitive to METH. Recent studies showed that 7-nitroindazole (7-NI), a selective inhibitor of neuronal nitric oxide synthase (nNOS), provided protection against METH neurotoxicity both in vitro and in vivo. The present studies were conducted to determine the nNOS activity...

Journal: :The Biochemical journal 2011
Jesús Tejero Ashis Biswas Mohammad Mahfuzul Haque Zhi-Qiang Wang Craig Hemann Cornelius L Varnado Zachary Novince Russ Hille Douglas C Goodwin Dennis J Stuehr

NOSs (NO synthases, EC 1.14.13.39) are haem-thiolate enzymes that catalyse a two-step oxidation of L-arginine to generate NO. The structural and electronic features that regulate their NO synthesis activity are incompletely understood. To investigate how haem electronics govern the catalytic properties of NOS, we utilized a bacterial haem transporter protein to overexpress a mesohaem-containing...

Journal: :FASEB journal : official publication of the Federation of American Societies for Experimental Biology 2002
Rachelle H Crosbie Rita Barresi Kevin P Campbell

nNOS, anchored to the sarcolemma through its interactions with the dystrophin-glycoprotein complex, is dramatically reduced in dystrophin-deficient mdx mice and Duchenne muscular dystrophy patients. Recent evidence suggests that loss of nNOS in dystrophin-deficient muscle may contribute significantly to the progression of muscle pathology through a variety of mechanisms. To investigate whether ...

Journal: :American journal of physiology. Heart and circulatory physiology 1999
Steven S Segal Suzanne E Brett William C Sessa

In isolated cell systems, nitric oxide synthase (NOS) activity is regulated by caveolin (CAV), a resident caveolae coat protein. Because little is known of this interaction in vivo, we tested whether NOS and caveolin are distributed together in the intact organism. Using immunohistochemistry, we investigated the localization of constitutive neuronal (nNOS) and endothelial (eNOS) enzyme isoforms...

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