محمدرضا نیکروش
[ 1 ] - ارزیابی فعالیت آنزیم کولین استراز اریتروسیت و سرم در موش‌های صحرایی نر تیمار شده با دیازینون و نقش حفاظتی ویتامین E
زمینه و هدف: دیازینون یکی از حشره‌کش‌های ارگانوفسفره است که فعالیت کولین استراز را مهار و استرس اکسیداتیو را در ارگان‌های هدف ، از قبیل سیستم تولید مثلی القاء می‌کند. هدف از مطالعه حاضر بررسی اثرات دیازینون برروی فعالیت کولین استراز سرم و اریتروسیت‌های خون در رت نر و بررسی نقش محافظت کنندگی ویتامینE بود مواد و روش‌ها: در این مطالعه تجربی، تعداد 30 سر موش صحرایی نر بالغ نژاد ویستار با وزن ...
[ 2 ] - Immunohistochemical study of type III collagen expression during pre and post-natal rat skin morphogenesis
Objective(s):Skin extracellular matrix, which contains type I and type III collagens, is involved in skin development. The aim of this study was to investigate type III collagen distribution pattern as well as its changes during pre and post-natal skin morphogenesis in rats. Materials and Methods: Ventral skins of Wistar rat embryos at different stages from 10 to 20 gestational day (E10-E20) a...
[ 3 ] - Diagnostic Value of Lectins in Differentiation of Molar Placentas
Objective(s)Distinction of hydatidiform moles from non-molar specimens and subclassification of hydatidiform moles as complete and partial are important for clinical practice, but diagnosis based solely on histomorphology suffers from poor interobserver reproducibility. Nowadays, pathologists rely on molecular techniques, however these methods are technically difficult, relatively expensive, an...
[ 4 ] - Therapeutic Benefit of Intravenous Administration of Human Umbilical Cord Blood- Mononuclear Cells Following Intracerebral Hemorrhage in Rat
Objective(s) Human umbilical cord blood (HUCB) is now considered as a valuable source for stem cell–based therapies. Previous studies showed that intravascular injection of the HUCB significantly improves neurological functional recovery in a rat model of intracerebral hemorrhage (ICH). In the present study, we hypothesize transplanted HUCB derived mononuclear cells (UC-MCs) can decrease injur...
[ 5 ] - Lectin Histochemical Study of Vasculogenesis During Rat Pituitary Morphogenesis
Objective(s) The aim of this study was to investigate glycoconjugates distribution patterns as well as their changes during the course of pituitary portal vasculogenesis and angiogenesis. Materials and Methods Formalin fixed paraffin sections of 10 to 20 days of Sprague Dawly rat fetuses were processed for histochemical studies using four different horseradish peroxidase (HRP) conjugated lec...
[ 6 ] - The Role of Type IV Collagen in Developing Lens in Mouse Fetuses
Objective(s) Extracellular matrix (ECM) and basement membrane (BM) play important roles in many developmental processes during development and after birth. Among the components of the BM, collagen fibers specially type IV are the most important parts. The aim of this study was to determine the time when collagen type IV appears in the BM of lens structure during mouse embryonic development. M...
[ 7 ] - بررسی تأثیر دیازینون و نقش حفاظتی ویتامین E بر فعالیت کولین استراز پلاسما و گلبول های قرمز موش صحرایی نر و ماده
Introduction & Objective: Diazinon (DZN) is an organophosphate insecticide that one of the mechanisms of toxicity is the inhibition of cholinesterase. The aim of the present study was to evaluate the effects of diazinon on cholinesterase activity in blood serum and erythrocytes of male and female rats and to assess the protective role of vitamin E. Materials & Methods: In this experimental stud...
[ 8 ] - Apoptotic Effect of Organophosphorus Insecticide Diazinon on Rat Ovary and Protective Effect of Vitamin E
Background: Diazinon (DZN) is an organophosphate insecticide widely utilized in agriculture all over the world and causes many negative effects on plants and animal species, especially on human. The aim of present study was to evaluate the effects of DZN on apoptosis of ovarian follicles in adult rats and to assess the protective role of vit E. Methods: Thirty adult female Wistar rats were d...
[ 9 ] - Diazinon-Induced Ovarian Toxicity and Protection by Vitamins E
Background: DZN (diazinon) is an organophosphate insecticide that had been used in agriculture and for domestic and veterinary use for several years and caused many negative effects on plants and animal species, especially on human. The aim of present study was to evaluate the effects of DZN on MDA (malondialdehyde) and GSH (glutathione) levels in female rat reproductive tissue (ovary) and to...
[ 10 ] - بررسی اثر حفاظتی ویتامینE بر سطح آنزیم کولین استراز سرمی و اریتروسیت خون رت ماده بالغ، در مسمومیت ناشی از دیازینون
زمینه و هدف: دیازینون یک حشره کش ارگانوفسفره است که یکی از مکانیسم های اصلی سمیت آن، مهار آنزیم کولین استراز می باشد. هدف از مطالعه حاضر بررسی اثرات دیازینون برروی فعالیت کولین استراز خون رت ماده بالغ و بررسی اثر محافظت کنندگی ویتامینE بوده است که به دنبال مطالعه دیگری با موضوع استرس اکسیداتیو القا شده با دیازینون در بافت تخمدان، انجام شد. مواد و روش کار: تعداد 30 سر موش صحرایی ماده بالغ از نژ...
[ 11 ] - Evaluation of the anti-oxidant effect of ascorbic acid on apoptosis and proliferation of germinal epithelium cells of rat testis following malathion-induced toxicity
Objective(s): The aim of this study was to determine the protective role of ascorbic acid on apoptosis and proliferation of spermatogonia and primary spermatocyte cells after malathion administration as an organophosphate pesticide in rat testis.Materials and Methods: Thirty male Wistar rats were randomly divided into five groups of 6 ra...
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