Efeitos do acetato de deslorelina sobre a produção in vivo e in vitro de embriões de gatas domésticas

Deslorelin acetate promotes a long, safe and efficient contraception; however reversibility is consider progressive and asynchronous. We aim to evaluate the effects of deslorelin acetate on in vitro and in vivo embryo production in domestic cats. For that 2 experiments were performed. Experiment 1: The objective was to investigate the effect of contraceptive treatment with deslorelin acetate in in vitro embryo production and oocyte recovery in domestic queens. Twenty one queens (Treated n=11 and Control n=10) and one tom were used. Eleven queens were treated with deslorelin acetate (4.7mg/animal) during 6 months. Thereafter all females (treated and control) were spayed and the ovaries were included in in vitro embryo production routines (PIV). Rate of COC recovery was submitted to t test. Cleavage and blastocyst rate were expressed in percentage and submitted to Fisher's exact test. All analyses were performed in GraphPad Pisma v5.0 program, P < 0.05. One female developed galactorrhoea and was removed from experimental group. In Control group we recovered 18.4±3.21 of COC I, cleavage rate was 55.97% and blastocyst rate was 33.99%.In Treated group we recovered 8.3±1.15 of COC I, cleavage rate was 60.24% and blastocyst rate was 36%. Statistical difference was only observed in COC recovery, were treated cats had fewer than control group. Although we didn't found differences on embryo production, individual variation must be considered. Experiment 2: We aimed to evaluate in vivo embryo production, trough pregnancies, and also identify estrogen (ER-α) and progesterone (PgR) receptors in uterus and FSH (FSH-R) and LH (LH-R) receptors in ovaries from queen treated with deslorelin acetate. We used 25 queens and one tom, 15 queens were treated with deslorelin acetate (4.7mg/animal) for 3 months. After that, all implants were removed and estrous and ovulation was induced. After 24hs five queens were maintained with one tom and mating was ...O acetato de deslorelina promove uma contracepção de longa duração segura e eficaz, porém a reversibilidade espontânea é progressiva e assincrônica. O objetivo geral foi avaliar os efeitos do acetato de deslorelina sobre a produção in vivo e in vitro de embriões de gatas domésticas. Para tanto foram realizados 2 experimentos. Experimento 1: Objetivou-se avaliar a taxa de produção de embriões in vitro em gatas tratadas com acetato de deslorelina. Foram utilizadas 21 fêmeas (Tratado n=11 e Controle n=10). Onze gatas receberam um implante de deslorelina (4,7mg/animal) e o tratamento durou 6 meses. Após o tratamento, todas as fêmeas (Tratado e Controle) foram submetidas à OSH para que seus ovários fossem incluídos em rotinas de produção de embriões in vitro (PIV). A taxa de recuperação de COC foi submetida ao teste t de Student. As taxas de clivagem e blastocisto foram expressas em porcentagem e submetidas ao teste exato de Fisher. Todas as análises foram realizadas no programa GraphPad v5.0, P