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URI permanente para esta coleçãohttps://locus.ufv.br/handle/123456789/11852

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Tem arquivos: SimAssunto: search.filters.subject.Caprine

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    Human follicle stimulating hormone (hFSH) and thyroxine (T4) in survival maintenance and in vitro growth promotion of caprine preantral follicles
    (Ciência Animal Brasileira, 2015-02-23) Costa, Sanely Lourenço da; Costa, Eduardo Paulino da; Pereira, Emílio César Martins; Gonçalves, Wagner Gonzaga; Silva, Talita Fernandes da; Queiroz, Vanessa Lopes Dias
    The aim of this study was to investigate the interaction of human FSH (10ng/ml) with T4 (20ng/mL) on survival, activation and growth of preantral follicles cultured in vitro for 28 days. Fragments of non-cultured and cultured ovarian tissue were processed for classic histology and transmission electron microscopy. The results showed a reduction in the survival rate in all the media tested (one to 28 days) when compared to the fresh control. However the treatment with T4/hFSH for seven days of culture maintained the rate similar to the control. The media tested by one and 28 days reduced the percentage of primordial follicles in all periods of culture. However, T4/hFSH on day one of culture remained similar to the fresh control. None of the media were able to keep the percentage of the developing follicles. It was observed that the follicular diameter in the medium with T4/hFSH remained similar to the fresh control. The ultrastructural analysis confirmed the integrity of follicles cultured for seven days in a medium supplemented with T4/hFSH. In conclusion, the medium with T4/hFSH is able to maintain the survival, promote the activation, and the ultrastructural integrity of caprine preantral follicles for until seven days.
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    The human follicle stimulating hormone (hFSH) keeps the normal ultrastructure of caprine preantral follicles cultured in vitro
    (Semina: Ciências Agrárias, 2015-01-25) Costa, Sanely Lourenço da; Costa, Eduardo Paulino da; Pereira, Emílio César Martins; Benjamin, Laércio dos Anjos; Verde, Isabel Bezerra Lima; Celestino, Juliana Jales de Hollanda; Figueiredo, José Ricardo de
    The aim of this study was to investigate the effects of human follicle stimulating hormone (hFSH) on the in vitro culture of caprine preantral follicles. Fragments of goat ovarian cortex were cultured in α-MEM + supplemented with 0, 10, or 50 ng/mL hFSH for one or seven days. Small fragments of non-cultured and cultured ovarian tissue were processed for classic histology and transmission electron microscopy. The statistical tests used in this study were Lilliefors, Cochran, and Tukey’s (when significance was detected, PROC ANOVA, SAS was used). The results revealed a reduction in the percentage of normal follicles after one or seven days of culture under all treatment conditions. The rates of follicular survival were similar to each other, within each day of culture. The medium containing 10 ng/mL hFSH reduced the percentage of primordial follicles following culture for one and seven days and did not increase the percentage of developing follicles. The follicular diameter of ovarian tissue cultured in α-MEM + medium and medium supplemented with 10 ng/mL of hFSH did not change when compared with the control (non-cultured). The ultrastructural analysis confirmed the integrity of follicles cultured for seven days in medium containing 10 ng/mL hFSH. In conclusion, hFSH (10 ng/mL) is capable of promoting the activation of primordial follicles and maintaining the ultrastructural integrity of caprine preantral follicles cultured in vitro for seven days.