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Essential role of follicle stimulating hormone in the maintenance of caprine preantral follicle viability in vitro

  • M.H.T. Matos (a1), I.B. Lima-Verde (a2), M.C.A. Luque (a3), J.E. Maia Jr (a1), J.R.V. Silva (a1), J.J.H. Celestino (a1), F.S. Martins (a1), S.N. Báo (a3), C.M. Lucci (a4) and J.R. Figueiredo (a1)...


The aims of the present study were to investigate the effects of follicle-stimulating hormone (FSH) on survival, activation and growth of caprine primordial follicles using histological and ultrastructural studies. Pieces of caprine ovarian cortex were cultured for 1 or 7 days in minimum essential medium (MEM – control medium) supplemented with different concentrations of FSH (0, 10, 50 or 100 ng/ml). Small fragments from non-cultured ovarian tissue and from those cultured for 1 or 7 days in a specific medium were processed for classical histology and transmission electron microscopy (TEM). Additionally, effects of FSH on oocyte and follicle diameter of cultured follicles were evaluated. The results showed that the lowest percentage of normal follicles was observed after 7 days of culture in control medium. After 1 day of culture, a higher percentage of growing follicles was observed in the medium supplemented with 50 ng/ml of FSH. In the presence of 10 and 50 ng/ml of FSH, an increase in diameter of both oocyte and follicle on day 7 of culture was observed. TEM showed ultrastructural integrity of follicles after 1 day of culture in MEM and after 7 days in MEM plus 50 ng/ml FSH, but did not confirm the integrity of those follicles cultured for 7 days in MEM. In conclusion, this study demonstrated that FSH at concentration of 50 ng/ml not only maintains the morphological integrity of 7 days cultured caprine preantral follicles, but also stimulate the activation of primordial follicles and the growth of activated follicles.


Corresponding author

All correspondence to: Maria Helena T. Matos, Programa de Pós-Graduação em Ciências Veterinárias (PPGCV), Laboratório de Manipulação de Oócitos e Folículos Pré-Antrais (LAMOFOPA), Universidade Estadual do Ceará (UECE), Av. Paranjana, 1700, Campus do Itaperi, Fortaleza–CE–Brasil. CEP: 60740–000. Tel: +55 85 3101 9852. Fax: +55 85 3101 9840. e-mail:


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Essential role of follicle stimulating hormone in the maintenance of caprine preantral follicle viability in vitro

  • M.H.T. Matos (a1), I.B. Lima-Verde (a2), M.C.A. Luque (a3), J.E. Maia Jr (a1), J.R.V. Silva (a1), J.J.H. Celestino (a1), F.S. Martins (a1), S.N. Báo (a3), C.M. Lucci (a4) and J.R. Figueiredo (a1)...


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