Seasonal expression of luteinizing hormone receptor and follicle stimulating hormone receptor in testes of the wild ground squirrels (Citellus dauricus Brandt)
Autor: | Ying Wang, Zhengrong Yuan, Haolin Zhang, Xia Sheng, Junjie Wang, Manyu Zhu, Yingying Han, Fengwei Zhang, Qiang Weng |
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Rok vydání: | 2017 |
Předmět: |
0301 basic medicine
Male endocrine system medicine.medical_specialty Histology Blotting Western Biology Polymerase Chain Reaction 03 medical and health sciences Follicle-stimulating hormone 0302 clinical medicine Internal medicine Testis medicine Seasonal breeder Animals Ground squirrel 030219 obstetrics & reproductive medicine luteinizing hormone/choriogonadotropin receptor Sciuridae Cell Biology General Medicine Receptors LH Sertoli cell biology.organism_classification Immunohistochemistry 030104 developmental biology Endocrinology medicine.anatomical_structure Receptors FSH Seasons Luteinizing hormone Follicle-stimulating hormone receptor Spermatogenesis |
Zdroj: | Acta histochemica. 119(7) |
ISSN: | 1618-0372 |
Popis: | 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. |
Databáze: | OpenAIRE |
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