Idioma:

Effect of triiodothyronine on developmental competence of bovine oocytes

Costa, N.N. ; Cordeiro, M.S. ; Silva, T.V.G. ; Sastre, D. ; Santana, P.P.B. ; Sá, A.L.A. ; Sampaio, R.V. ; Santos, S.S.D. ; Adona, P.R. ; Miranda, M.S. ; Ohashi, O.M.

Theriogenology, 2013-09, Vol.80 (4), p.295-301 [Periódico revisado por pares]

United States: Elsevier Inc

Texto completo disponível

Citações Citado por

Enviar para

Título:
Effect of triiodothyronine on developmental competence of bovine oocytes
Autor: Costa, N.N. ; Cordeiro, M.S. ; Silva, T.V.G. ; Sastre, D. ; Santana, P.P.B. ; Sá, A.L.A. ; Sampaio, R.V. ; Santos, S.S.D. ; Adona, P.R. ; Miranda, M.S. ; Ohashi, O.M.
Assuntos: Animals ; Cattle ; Cells, Cultured ; Cumulus Cells - drug effects ; Cumulus Cells - physiology ; Developmental competence ; Embryonic Development - drug effects ; Embryonic Development - genetics ; Embryonic gene expression ; Female ; Gene Expression Regulation, Developmental - drug effects ; In Vitro Oocyte Maturation Techniques - methods ; In Vitro Oocyte Maturation Techniques - veterinary ; Male ; Oocyte maturation ; Oocytes - drug effects ; Oocytes - physiology ; Oogenesis - drug effects ; Oogenesis - genetics ; Receptors, Thyroid Hormone - genetics ; Receptors, Thyroid Hormone - metabolism ; Triiodothyronine ; Triiodothyronine - pharmacology
É parte de: Theriogenology, 2013-09, Vol.80 (4), p.295-301
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Developmental competence of in vitro–matured bovine oocytes is a limiting factor in production of embryos in vitro. Several studies have suggested a potential positive effect of thyroid hormones on cultured oocytes and/or their supporting cells. Therefore, the aim of the present study was to ascertain whether medium supplementation with triiodothyronine (T3) improved subsequent developmental competence of in vitro–matured bovine oocytes. For this purpose, we first documented (using reverse transcription PCR) that whereas bovine cumulus cells expressed both thyroid hormone receptor (TR)-α and TRβ, immature bovine oocytes expressed TRα only. Thereafter, to test the effects of TH on developmental competence, abattoir-derived oocytes were matured in vitro in a medium containing 0, 25, 50, or 100 nM T3 and subjected to in vitro fertilization. Embryo quality was evaluated by assessing cleavage and blastocyst rates, morphological quality, development kinetics, and total cell number on Day 8 of culture. Notably, addition of 50 or 100 nM T3 to the in vitro maturation medium increased (P < 0.05) the rate of hatched blastocysts on the eighth day of culture, as compared with other groups (62.4 ± 11.7, 53.1 ± 16.3, and 32.4 ± 5.3, respectively). Next, the relative expression levels of genes related to embryo quality POU-domain transcription factor (POU5F1) and glucose transporter-1 (GLUT 1) were compared between in vivo– and in vitro–produced blastocysts. On the basis of the previous experiments, IVP embryos originating from oocytes that were matured in vitro in the presence or absence of 50 nM T3 were evaluated. The treatment had no effect (P > 0.05) on gene expression. We concluded that supplementation of bovine oocyte in vitro maturation medium with T3 may have a beneficial effect on the kinetics of embryo development.
Editor: United States: Elsevier Inc
Idioma: Inglês

Links

View this record in MEDLINE/PubMed

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Effect of triiodothyronine on developmental competence of bovine oocytes

Costa, N.N. ; Cordeiro, M.S. ; Silva, T.V.G. ; Sastre, D. ; Santana, P.P.B. ; Sá, A.L.A. ; Sampaio, R.V. ; Santos, S.S.D. ; Adona, P.R. ; Miranda, M.S. ; Ohashi, O.M.

United States: Elsevier Inc

Buscando em bases de dados remotas. Favor aguardar.