Mohammad Saied Salehi
Department of Animal Science, College of Agriculture, Shiraz University, Shiraz, Iran
[ 1 ] - Luteal activity of Abadeh ecotype does in summer and winter and the effect of a single dose of kisspeptin-10 injection on luteinizing hormone secretion in the anestrus does
The aims of the present study were to evaluate luteal activity in Abadeh ecotype goat during summer and winter and also the effect of a single dose kisspeptin-10 injection on the secretion of luteinizing hormone (LH) in female anestrous goats. In the first study, progesterone (P4) concentration in 10 goats in summer (n = 6) and winter (n = 4) were measured every other day. Moreover, ...
[ 2 ] - اثر سطوح غیرطبیعی تستوسترون بر بیان کیس پپتین در هیپوتالاموس موش صحرایی نر
در نرها، تستوسترون با مکانیسم فیدبکی منفی تراوش هورمون آزادکننده گونادوتروپین (GnRH) و به دنبال آن گونادوترپینها را تنظیم میکند. نورونهای GnRH گیرنده آندروژن بیان نمیکنند، بنابراین اثرات تستوسترون میبایست از طریق نورونهای بالادست حساس به استرویید اعمال شود. نورونهای کیس پپتین به عنوان حلقه گمشده در کنترل فیدبکی نورونهای GnRH در نظر گرفته شده اند با این حال اثرات مرکزی غلظتهای بالا...
[ 3 ] - تغییر نسبت جنسی نوزادان موش صحرایی در پاسخ به مکمل پتاسیم جیره
زمینه مطالعه: برخی یون‌های جیره می‌توانند با اثر بر دستگاه تولیدمثل ماده یا لایه‌های اطراف اووسیت، نفوذ اسپرم با نوع خاصی کروموزوم را تسهیل کنند و نسبت جنسی نوزاد پستانداران را تغییر دهند. هدف: بررسی اثر مکمل پتاسیم بر تغییر نسبت جنسی نوزادان موش‌های صحرایی. روش‌کار: درصد رطوبت، خاکستر، چربی و پروتین خام، سدیم، پتاسیم، کلسیم و انرژی جیره موش‌های صحرایی اندازه‌گیری شد. در گروه شاهد نوزادان نر و...
[ 4 ] - Hypothalamic Expression of Melanocortin-4 Receptor and Agouti-related Peptide mRNAs During the Estrous Cycle of Rats
Melanocortin- 4 receptor (MC4R) and agouti- related peptide (AgRP) are involved in energy homeostasis in rats. According to MC4R and AgRP effects on luteinizing hormone (LH) secretion, they may influence the estrous cycle of rats. Therefore, the aim of this study was to investigate the expression of MC4R and AgRP mRNAs at different stages of estrous cycle in the rat’s hypothalamus. The estrous ...
[ 5 ] - Expression of RFamide-related peptide in the dorsomedial nucleus of hypothalamus during the estrous cycle of rats
Introduction: RFamide-related peptide (RFRP) is believed to act as an inhibitor of gonadotropin releasing hormone (GnRH) secretion. The aim of the present study was to compare the expression pattern of RFRP neurons in the dorsomedial nucleus of hypothalamus (DMH) at different phases of the rat estrous cycle. Methods: The phases of the estrous cycle were determined in 16 adult female Sprague-...
[ 6 ] - The roles of RFamide-related peptides (RFRPs), mammalian gonadotropin-inhibitory hormone (GnIH) orthologues in female reproduction
Objective(s): To benefit from reproduction and deal with challenges in the environmental conditions, animals must adapt internal physiology to maximize the reproduction rate. Maladaptive variations in the neurochemical systems and reproductive system can lead to manifestation of several significant mammalian reprocesses, including mammalian ovarian lifespan. RFamide-related peptide (RFRP, Rfrp)...
[ 7 ] - The effects of supraphysiological levels of testosterone on neural networks upstream of gonadotropin-releasing hormone neurons
Objective(s): Several pathological conditions are associated with hyper-production of testosterone; however, its impacts are not well understood. Hence, we evaluated the effects of supraphysiological levels of testosterone on gonadotropin-releasing hormone (GnRH) system in the hypothalamus of male rats. Also, we assessed the expression of two excitatory (kisspeptin and...
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