نتایج جستجو برای: nucleus

تعداد نتایج: 112020  

Journal: :physiology and pharmacology 0
mitra yousefpour shahid beheshti university of medical science, neuroscience research center nima naderi shahid beheshti university of medical science, neuroscience research center mahyar janahmadi dept. physiology, faculty of medicine, shahid beheshti university of medical science, tehran, iran amir mohammad alizadeh shahid beheshti university of medical science, neuroscience research center fereshteh motamedi shahid beheshti university of medical science, neuroscience research center

introduction: the magnocellular neurons (mcns) of the supraoptic nucleus (son) play a crucial role in control of physiological and pathophysiologiccal condition due to two peptides that they synthesize, i.e. oxytocin (oxt) and vasopressin (avp). the activity of mcns is regulated by a variety of excitatory and inhibitory inputs. opioid receptors are one of the important receptors in son synapses...

Journal: :acta medica iranica 0
p. pasbakhsh m. mehdizadeh n. omidi

alzheimer’s disease (ad) is a uniquely human disorder. although the pathogenesis of ad is not fully understood, growing evidence indicates that the deposition of beta-amyloid (aβ) and the local reactions of various cell types to this protein play major roles in the development of the disease. in the present study transgenic mice expressing mutant amyloid precursor protein (app) has been used. t...

Journal: :iranian journal of basic medical sciences 0
mitra yousefpour department of physiology, faculty of medicine, artesh university of medical science, tehran, iran nima naderi department of pharmacology and toxicology, faculty of pharmacy, shahid beheshti university of medical sciences, tehran, iran fereshteh motamedi neuroscience research center, shahid beheshti university of medical science, tehran, iran department of physiology, faculty of medicine, shahid beheshti university of medical science, tehran, iran

objective(s): opioids and cannabinoids are two important compounds that have been shown to influence the activity of magnocellular neurons (mcns) of supraoptic nucleus (son). the interaction between opioidergic and cannabinoidergic systems in various structures of the brain and spinal cord is now well established, but not in the mcns of son. materials and methods: in this study, whole cell patc...

Journal: :medical journal of islamic republic of iran 0
n gheibi from the department of medical physics, medical school, qazvin university of medical sciences, qazvin. the department of physiology, school of medical scences, tarbiat modarres university, tehran. and the institute of biochemistry and biophysics, tehran university, tehran, i.r.iran. s semnanian y fathollahi

in the present study, the effects of formalin as a peripheral noxious stimulus on spontaneously active units of the nucleus reticularis paragigantocellularis (pgi), a narrow region of the ventral pontine reticular formation, was examined in urethane anesthetized rats. spontaneous discharge of the pgi neurons was variable, ranging from i to 37 spikes per second. formalin as a chemical irritant a...

Journal: :modares journal of medical sciences: pathobiology 2014
nahid sarahian hedayat sahraei homeira zardooz hengameh alibeik bahareh sadeghi

objective: in the present study, we examined the effects of memantine administration within the nucleus accumbens on the alterations in brain and adrenal volumes and weight ratios induced by stress from electric foot shock. methods: a group of mice received various doses of memantine (0.1, 0.5 and 1 mg/kg) prior to induction of stress. another group underwent intra-accumbal cannulation after an...

Journal: :iranian biomedical journal 0
سید منصور ملکوتی seyed mansour malakouti معصومه کوروش آرامی masoomeh kourosh arami عبدالرحمن صریحی abdorahman sarihi سهراب حاجی زاده sohrab hajizadeh ژیلا بهزادی gila behzadi سیامک شهیدی siamak shahidi علیرضا کمکی

background: the nucleus raphe magnus (nrm) is involved in thermoregulatory processing. there is a correlation between changes in the firing rates of the cells in the nrm and the application of the peripheral thermal stimulus. introduction: we examined the effect of reversible inactivation and excitation of nrm on mechanisms involved in tail blood flow (tbf) regulation in hypothermia. methods: h...

شادپرور, عبدالاحد, عسکری همت, حشمت الله, میرایی آشتیانی, سید رضا, واعظ ترشیزی, رسول,

     The objectives of this research were to simulate and optimize three open nucleus breeding schemes for improvement of growth traits and carcass composition in Lori-Bakhtiari lambs with 500 ewes in nucleus using a deterministic approach. These schemes were: scheme 1 with natural mating and mating ratio (M) of 50 ewes per ram in nucleus and member flocks (base), scheme 2 with artificial insem...

Hadi Fathi Moghaddam, Mahnaz Kesmati, Zahra Abbasi zadeh,

Introduction: In this study the effect of Matricaria recutita extract on acute pain in the presence and absence of flumazenil (antagonist of benzodiazepine) and lesioned paragigantocellularis (PGi) nucleus was investigated. Method: Wistar male rats (250±20 g) were used. Animals were grouped randomly into intact, sham and bilateral lesion of PGi nucleus. Intact and lesioned animals, each...

Broad nervous circuits originate from the hypothalamic arcuate nucleus project to many parts of the brain which are related to pain perception. Insulin receptors have been found in the arcuate nucleus. Since nociception may be affected in type 1 diabetes, the present study aimed to investigate the intra-arcuate nucleus insulin role in pain perception in STZ-induced diabetic and healthy rats. Fo...

ژورنال: فیض 2019

Background: Cost-benefit decision-making is a one of the decision-making models in which the animal achieves a final benefit (reward) by evaluating the cost (effort or delay). The role of different brain regions such as nucleus accumbens in this process has been proven. Orexin is a neuropeptide expressed exclusively by lateral hypothalamus area neurons and orexin-producing neurons project their...

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