In the present study, a model is suggested to describe hormone control in male blue gourami (<i><span style="font-family:Verdana;">Trichogaster trichopterus</span></i><span style=&...In the present study, a model is suggested to describe hormone control in male blue gourami (<i><span style="font-family:Verdana;">Trichogaster trichopterus</span></i><span style="font-family:Verdana;">) along the gonadotropic brain</span><span style="font-size:10pt;font-family:Verdana;">-</span><span style="font-size:10pt;font-family:Verdana;">pituitary</span><span style="font-size:10pt;font-family:Verdana;">- </span><span style="font-size:10pt;font-family:Verdana;">gonad axis (BPG axis) and the hypothalamic-pituitary-somatotropic axis (HPS axis). This model is based on the cloning</span><span style="font-size:10.0pt;font-family:""><span style="font-family:Verdana;"> and transcription of genes encoding hormones of the two axes involved in spermatogenesis during blue gourami reproduction. Gene transcription is affected by environmental, biological, </span><span style="font-family:Verdana;">and behavioral factors. Mature males were examined in two different stages—nonreproductive in high-density habitats and reproductive in low-density </span><span style="font-family:Verdana;">habitats. Based on gene transcription, gonadotropin-releasing hormone 1 (GnRH1) was involved in controlling spermatogenesis (spermatogonia to spermatids) via the BPG axis in nonreproductive and reproductive stages by controlling follicle-stimulating hormone (FSH), 11-ketotestosterone (11KT) and 17</span><i><span style="font-family:Verdana;">β</span></i><span style="font-family:Verdana;">-estradiol (E</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;">). However, GnRH3 had a larger effect during the reproductive stage via the BPG axis (spermatids to sperm) on luteinizing hormone (LH), 11KT, and 17</span><i><span style="font-family:Verdana;">α</span></i></span><span style="font-size:10pt;font-family:Verdana;">-</span><span style="font-size:10pt;font-family:Verdana;">hydroxyprogesterone (17P). At the same time, the HPS axis was involved in spermatogenesis via pituitary adenylate cyclase-activating polypeptide (PACAP) and its related peptide PRP (formerly known as GHRH-like peptide) in the brain, and growth hormone (GH) in the pituitary affected synthesis of insulin-like growth factor 1 (IGF1) in the liver.</span>展开更多
文摘In the present study, a model is suggested to describe hormone control in male blue gourami (<i><span style="font-family:Verdana;">Trichogaster trichopterus</span></i><span style="font-family:Verdana;">) along the gonadotropic brain</span><span style="font-size:10pt;font-family:Verdana;">-</span><span style="font-size:10pt;font-family:Verdana;">pituitary</span><span style="font-size:10pt;font-family:Verdana;">- </span><span style="font-size:10pt;font-family:Verdana;">gonad axis (BPG axis) and the hypothalamic-pituitary-somatotropic axis (HPS axis). This model is based on the cloning</span><span style="font-size:10.0pt;font-family:""><span style="font-family:Verdana;"> and transcription of genes encoding hormones of the two axes involved in spermatogenesis during blue gourami reproduction. Gene transcription is affected by environmental, biological, </span><span style="font-family:Verdana;">and behavioral factors. Mature males were examined in two different stages—nonreproductive in high-density habitats and reproductive in low-density </span><span style="font-family:Verdana;">habitats. Based on gene transcription, gonadotropin-releasing hormone 1 (GnRH1) was involved in controlling spermatogenesis (spermatogonia to spermatids) via the BPG axis in nonreproductive and reproductive stages by controlling follicle-stimulating hormone (FSH), 11-ketotestosterone (11KT) and 17</span><i><span style="font-family:Verdana;">β</span></i><span style="font-family:Verdana;">-estradiol (E</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;">). However, GnRH3 had a larger effect during the reproductive stage via the BPG axis (spermatids to sperm) on luteinizing hormone (LH), 11KT, and 17</span><i><span style="font-family:Verdana;">α</span></i></span><span style="font-size:10pt;font-family:Verdana;">-</span><span style="font-size:10pt;font-family:Verdana;">hydroxyprogesterone (17P). At the same time, the HPS axis was involved in spermatogenesis via pituitary adenylate cyclase-activating polypeptide (PACAP) and its related peptide PRP (formerly known as GHRH-like peptide) in the brain, and growth hormone (GH) in the pituitary affected synthesis of insulin-like growth factor 1 (IGF1) in the liver.</span>