Effect of charcoal-treated bovine follicular fluid on the secretion of FSH in ovariectomized and intact prepubertal heifers

Authors

  • Rafael Herrera Alvarez Instituto de Zootecnia, Seção de Reprodução e Inseminação Artificial
  • Juliana Rodrigues Pozzi Arcaro Instituto de Pesquisas Energéticas e Nucleares, Departamento de Bioengenharia, São Paulo, SP
  • Maria Teresa Carvalho Pinto Ribela Instituto de Pesquisas Energéticas e Nucleares, Departamento de Bioengenharia, São Paulo, SP
  • Cibele Nunes Perone Instituto de Pesquisas Energéticas e Nucleares, Departamento de Bioengenharia, São Paulo, SP

DOI:

https://doi.org/10.1590/S1413-95961998000500004

Keywords:

Follicular fluid, FSH, Bovine

Abstract

The aim of the experiment was to determine whether charcoal-treated bovine follicular fluid (bFF) removed from visible (< 22 mm) follicles altered the secretion of follicle-stimulating hormone (FSH) in intact and ovariectomized prepubertal heifers. After a 10-ml injection of bFF given at three consecutive 8-h intervals, secretion of FSH was depressed in approximately 44% of the ovariectomized heifers but there was no effect in intact heifers. When the bFF treatment ceased, there were no rebound effects on FSH concentrations above that of controls pretreatment levels. These results suggest that proteins from bFF act at the pituitary level to inhibit FSH secretion and, differently of the intact, the ovariectomized heifer is an adequate model to put this effect in evidence, particularly when the bFF have low FSH suppressing activity.

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Published

1998-01-01

Issue

Vol. 35 No. 5 (1998)

Section

VETERINARY MEDICINE

License

The journal content is authorized under the Creative Commons  BY-NC-SA  license (summary of the license: https://creativecommons.org/licenses/by-nc-sa/4.0 | full text of the license: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode) 

How to Cite

1.
Alvarez RH, Arcaro JRP, Ribela MTCP, Perone CN. Effect of charcoal-treated bovine follicular fluid on the secretion of FSH in ovariectomized and intact prepubertal heifers. Braz. J. Vet. Res. Anim. Sci. [Internet]. 1998 Jan. 1 [cited 2024 Apr. 19];35(5):215-7. Available from: https://revistas.usp.br/bjvras/article/view/5685