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Activation of goat primordial follicles in vitro: Influence of alginate and ovarian tissue
Author(s) -
Correia Hudson H. V.,
Lima Laritza F.,
Sousa Francisca Geovania C.,
Ferreira Anna Clara A.,
Cadenas Jesus,
Paes Victor M.,
Alves Benner G.,
Shikanov Ariella,
Figueiredo José Ricardo
Publication year - 2020
Publication title -
reproduction in domestic animals
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.546
H-Index - 66
eISSN - 1439-0531
pISSN - 0936-6768
DOI - 10.1111/rda.13582
Subject(s) - follicle , ovarian follicle , folliculogenesis , in vitro , ovarian tissue , biology , andrology , oocyte , tissue culture , medicine , endocrinology , ovary , microbiology and biotechnology , biochemistry , embryo , embryogenesis
The present study aimed to evaluate the effect of three culture systems on caprine primordial follicle activation in vitro: follicles cultured either in the isolated form within alginate (Isolated follicles + Alginate treatment), or enclosed in ovarian tissue (in situ), with or without alginate (Fragment + Alginate, and Fragment alone treatments, respectively). After culture, the Isolated follicles + Alginate treatment presented a percentage of morphologically normal follicles (MNF) similar to both the non‐cultured control and the Fragment Alone treatments. Nevertheless, Fragment + Alginate treatment showed a significant reduction in the number of MNF when compared to the other treatments. Regarding follicle development, our results showed that regardless of the alginate, the presence of ovarian tissue limited primordial follicle activation during in vitro culture. Remarkably, the Isolated primordial follicle + Alginate treatment was the only one that significantly promoted follicle activation and increased both follicle and oocyte diameters during IVFC, pointing out a higher cell proliferation. In conclusion, the presence of ovarian tissue with or without alginate limited follicle development (activation) after culture. Nevertheless, when primordial follicles were isolated and encapsulated in alginate they presented suitable survival rates, higher rates of follicle activation and continued to grow throughout the culture period.