Data/hora: 01/06/2024 10:03:57

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