| چکیده انگلیسی مقاله | The effects of chronic stress and glucocorticoids receptor antagonist (RU486) on expression of melanocortin 4 receptor (MC4R) mRNA in arcuate nucleus (ARC) of male rats were evaluated. In this study, adult male Sprague Dawley rats were placed into four groups (n=6/group) stress, RU486, stress/RU486, and control groups. In stress group, the rats were restrained, 1 h/day, for 12 days. In RU486 group, the rats were injected RU486 for 12 days. In stress/RU486 group, the rats were injected RU486 1 h before the stress process for 12 days. Relative expression of MC4R mRNA was determined using real-time PCR. Relative expression of MC4R mRNA in the stress group was higher than that of the control rats (P< 0.05). Relative expressions of MC4R mRNA were not different between the stress, RU486 and stress/RU486 groups (P>0.05). Chronic restraint stress causes increase in mRNA expression of MC4R in ARC and blockade of glucocorticoid receptors has no effect on this up-regulation. | 
                
 				| نویسندگان مقاله | مریم کرمی خیرآباد  | maryam karami kheirabad department of basic sciences, azad university, gachsaran branch, gachsaran, iran.
 
 
 بهیه نام آور جهرمی  | bahia namavar jahromi
 infertility research center, department of ob-gyn, school of medicine, shiraz university of medical sciences, shiraz, iran.
 
 سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز  (Shiraz university of medical sciences)
 
 امین تمدن  | amin tamadon
 transgenic technology research center, shiraz university of medical sciences, shiraz, iran.
 
 سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز  (Shiraz university of medical sciences)
 
 امین رمضانی  | amin ramezani
 department of medical biotechnology, school of advanced medical sciences and technology, shiraz university of medical sciences, shiraz, iran.
 
 سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز  (Shiraz university of medical sciences)
 سازمان های دیگر: Institute of Cancer Research, Shiraz University of Medical Sciences, Shiraz, Iran.
 
 سمیه احمدلو  | somayeh ahmadloo
 infertility research center, department of ob-gyn, school of medicine, shiraz university of medical sciences, shiraz, iran.
 
 سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز  (Shiraz university of medical sciences)
 
 فاطمه ثابت سروستانی  | fatemeh sabet sarvestani
 infertility research center, department of ob-gyn, school of medicine, shiraz university of medical sciences, shiraz, iran.
 
 سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز  (Shiraz university of medical sciences)
 
 امید کوهی حسین آبادی  | omid koohi hosseinabadi
 laboratory animal center, shiraz university of medical sciences, shiraz, iran.
 
 سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز  (Shiraz university of medical sciences)
 
 
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