Data/hora: 01/06/2024 09:23:20

Provedor de dados: 	45	
País: 	Brazil	
Título: 	Effect of pinealectomy, adrenalectomy, pinealectomy plus adrenalectomy upon the quantification of spermatogenic cells of adult rats	
Autores: 	Castro,A.C.S.; Queiroz,G.F.; Nogueira,J.C.; Coimbra,C.C.; Reis,A.M.; Marubayashi,U.; Yamasaki,K.	
Data: 	2002-06-01	
Ano: 	2002	
Palavras-chave: 	Spermatogenesis; Pinealectomy; Adrenalectomy; Rat.	
Resumo: 	The objectives of this study were to evaluate the effects of pinealectomy, adrenalectomy and pinealectomy-adrenalectomy upon the quantification of spermatogenic cells of rats. As such, 32 adult Wistar rats with a mean body weight of 331.7± 15.5g were assigned into one of the following treatments: (a) a sham-operated control group, consisting of nine animals; (b) ten pinealectomized animals; (c) seven adrenalectomized animals and (d) six pinealectomized plus adrenalectomized animals. No significant differences were observed between groups for the following parameters: body, testes, prostate and seminal vesicle weights, seminiferous tubular diameter, number of cells per seminiferous tubular cross sections (primary spermatocytes at pachytene, round spermatids, Sertoli cells) and numbers of germ cells per Sertoli cell (primary spermatocytes at pachytene and round spermatids ). Although no increase in testicular weight was observed following pinealectomy, a significant (P&lt;0.05) increase of approximately 11.5% in the number of round spermatids per Sertoli cell (Sertoli cell ratio) occurred thus suggesting that short-term pinealectomy abolishes the antigonadal effect of the pineal gland upon adult Wistar rat testes.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352002000300008	
Editor: 	Universidade Federal de Minas Gerais, Escola de Veterinária	
Relação: 	10.1590/S0102-09352002000300008	
Formato: 	text/html	
Fonte: 	Arquivo Brasileiro de Medicina Veterinária e Zootecnia  v.54 n.3 2002	
Fonte: 	info:eu-repo/semantics/openAccess