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Berta Crespo, Ana Gómez, María José Mazón, Manuel Carrillo, Silvia Zanuy
Puberty represents the transition from an immature to a mature reproductive stage. The mechanisms underlying the onset of normal or precocious puberty have not yet been elucidated. With the goal of gaining an understanding of early events that occur in the testes of precocious animals during this process, a hemigonadectomy was performed on male juvenile sea bass and expression levels of candidate mRNAs were determined through quantitative real-time RT-PCR. For this purpose, the gonadal soma-derived factors gsdf1 and gsdf2, the nuclear receptor 5 subfamily members nr5a1a (ff1b), nr5a1b (ff1d), nr5a2 (ff1a) and nr5a5 (ff1c) and the proliferating cell nuclear antigen or pcna, genes with a putative role in the beginning of spermatogenesis, were isolated and cloned...
September 15, 2013: General and Comparative Endocrinology
D Boerboom, N Pilon, R Behdjani, D W Silversides, J Sirois
Steroidogenic factor-1 (SF-1, NR5A1a) is a member of the NR5A nuclear receptor subfamily and has been implicated as a key transcriptional regulator of all ovarian steroidogenic genes in vitro. To establish links between the expression of SF-1 and that of the steroidogenic genes in vivo, the objectives of this study were to clone equine SF-1 and examine the regulation of its messenger RNA (mRNA) in follicular cells during human CG (hCG)-induced ovulation. The equine SF-1 primary transcript was cloned by a combination of RT-PCR techniques...
December 2000: Endocrinology
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