Acute fasting before conception affects metabolic and endocrine status without impacting follicle and oocyte development and embryo gene expression in the rabbit
Articolo
Data di Pubblicazione:
2011
Citazione:
Acute fasting before conception affects metabolic and endocrine status without impacting follicle and oocyte development and embryo gene expression in the rabbit / R.M. García García, P.G. Rebollar, M. Arias Álvarez, O.G. Sakr, P. Bermejo Álvarez, G. Brecchia, A. Gutierrez Adan, M. Zerani, C. Boiti, P.L. Lorenzo. - In: REPRODUCTION FERTILITY AND DEVELOPMENT. - ISSN 1031-3613. - 23:6(2011), pp. 759-768.
Abstract:
Food deprivation affects female reproduction. The goal of the present study was to elucidate in the rabbit model the effects of acute energy restriction on ovarian function (follicle development, atresia rate and in vitro oocyte maturation) and embryonic development and gene expression of some candidate genes. Serum metabolic parameters (non-esterified fatty acids (NEFA), triglycerides, glucose, insulin and leptin concentrations) and endocrine markers (oestradiol-17β and progesterone concentrations) were also studied. A control group of nulliparous does fed ad libitum and a 72-h fasted group were used. At the end of the nutritional treatment, the ovaries of half of the animals were retrieved while the other animals were re-fed and artificially inseminated to recover embryos at 84 h after insemination, during the luteal phase. At the end of fasting, increased serum NEFA and decreased leptin concentrations were observed in the fasted group, but no differences appeared in serum steroid concentrations, follicle population and atresia rate or nuclear and cytoplasmic oocyte maturation. In the luteal phase, insulin concentrations increased notably in the fasted group. The number of recovered embryos per female and the speed of embryo development were reduced in the food-deprived group. Acute fasting altered both metabolic and endocrine markers and embryo development, but follicle and oocyte development and embryo gene expression were not affected
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
apoptosis; maternal–embryo interaction
Elenco autori:
R.M. García García, P.G. Rebollar, M. Arias Álvarez, O.G. Sakr, P. Bermejo Álvarez, G. Brecchia, A. Gutierrez Adan, M. Zerani, C. Boiti, P.L. Lorenzo
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