Data/hora: 10/06/2024 05:31:13

Provedor de dados: 	Ciência Rural	
País: 	Brazil	
Título: 	Survival rates of mouse blastocyst vitrified in dimethylformamide based solutions associated with ethylene glicol or 1-2 propanediol	
Autores: 	Villamil,Paula Rodriguez; Ongaratto,Felipe Ledur; Silva,Daniela Scherer da; Rodrigues,Berenice de Avila; Rodrigues,Jose Luiz.	
Data: 	2011-11-01	
Ano: 	2011	
Palavras-chave: 	Mouse; Blastocyst; Vitrification; Dimethylformamide; Glass micro pipettes.	
Resumo: 	The aim of this study was to determine the effect of dimethylformamide (DF) associated with ethylene glycol (EG) or 1-2 propanediol (PROH) during vitrification, on the in vitro development of mouse blastocysts. Cryoprotectant toxicity was evaluated exposing embryos into three different equilibrium solutions (ES) composed by DF, EG or PROH mixtures (10% v/v of each) in mPBS + 0.5% PVA at different interval times (1, 3 and 10min). In a second experiment, embryos were exposed to the same ES (either 1 or 3min), following for the three respectively vitrification solutions (VS) (20% v/v of each) for 30s. After 72 hours of in vitro culture, embryo hatching and expansion rates were similar for the ES1 and ES2 equilibration solutions during the time interval of 1 or 3min. However embryos exposed for 10 min to the DF equilibration solutions, had lower survival rates than EG-PROH solution (P&lt;0.01). Furthermore, survival rates for embryos exposed to DF-PROH (ES+VS) were lower than embryos exposed to the other solutions (P&lt;0.01). Blastocyst vitrification was performed with the three ES+VS (for 1min and 30s, respectively), using glass micropipettes (GMP). Survival rates were lower for blastocysts vitrified with DF solutions (3%-3/108 and 17.1%-19/111) (P&lt;0.01) than with PROH+EG vitrification solutions (69%-73/105). In conclusion, DF as a cryoprotectant into vitrification solutions have deleterious effects on the in vitro developmental competence of vitrified mouse blastocysts.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001100022	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/S0103-84782011005000139	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.41 n.11 2011	
Fonte: 	info:eu-repo/semantics/openAccess