کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5504073 1535860 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Seasonal expression of luteinizing hormone receptor and follicle stimulating hormone receptor in testes of the wild ground squirrels (Citellus dauricus Brandt)
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Seasonal expression of luteinizing hormone receptor and follicle stimulating hormone receptor in testes of the wild ground squirrels (Citellus dauricus Brandt)
چکیده انگلیسی
The objective of this study was to evaluate whether luteinizing hormone (LH), follicle stimulating hormone (FSH) and their receptors luteinizing hormone receptor (LHR) and follicle stimulating hormone receptor (FSHR) play roles in the seasonal spermatogenesis of the wild ground squirrels. To that end, we characterized the testicular immunolocalization of LHR and FSHR, their expression on both mRNA and protein levels, as well as serum concentrations of LH and FSH in male wild ground squirrels throughout the annual reproductive cycle. Histologically, all types of spermatogenic cells including mature spermatozoa were identified in the breeding season (April), while spermatogonia and primary spermatocytes were observed in the non-breeding season (June), and spermatogonia, primary spermatocytes and secondary spermatocytes were found in pre-hibernation (September). LHR was present in Leydig cells during the whole periods with more intense staining in the breeding season; Stronger immunostaining of FSHR was observed in Sertoli cells during the breeding season compared to the non-breeding season and pre-hibernation. Consistently, the mRNA and protein levels of LHR and FSHR were higher in testes of the breeding season, and then decreased to a relatively lower level in the non-breeding season and pre-hibernation. Meanwhile, serum LH and FSH concentrations were significantly higher in the breeding season than those in the non-breeding season and pre-hibernation. These results suggested that gonadotropins and its receptors, LHR and FSHR may be involved in the regulation of seasonal changes in testicular functions of the wild ground squirrels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Histochemica - Volume 119, Issue 7, September 2017, Pages 727-732
نویسندگان
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