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The Study of Estrous Cycle Phases Female Rats With the Use of N-Acetylcysteine in Ovarian Graft / Estudo do Ciclo Estral de Ratas com Uso de N-Acetilcisteína no Enxerto Ovariano
Durando, Maria Clara da Silva; Gomes, Elivânia de Amorim Marques; Montero, Edna Frasson de Souza.
  • Durando, Maria Clara da Silva; Federal University of São Paulo, Post-Graduate Program in Interdisciplinary Surgical Sciences. SP, Brazil. São Paulo. BR
  • Gomes, Elivânia de Amorim Marques; Federal University of São Paulo, Post-Graduate Program in Interdisciplinary Surgical Sciences. SP, Brazil. Federal University of Vale do Sao Francisco. PE, Brazil. São Paulo. BR
  • Montero, Edna Frasson de Souza; University of São Paulo, Faculty of Medicine, Department of Surgery, Laboratory of Surgical Physiopathology (LIM-62). SP, Brazil. São Paulo. BR
J. health sci. (Londrina) ; 23(1): https://revista.pgsskroton.com/index.php/JHealthSci/article/view/7880, 20210330.
Article in English | LILACS-Express | LILACS | ID: biblio-1222775
ABSTRACT
Ovarian graft may be the target of the biochemical effects of oxidative stress caused at the time of transplantation. In order to evaluate the effect of N-acetylcysteine on the ovarian graft, regarding the estrous cycle preservation, 50 female and virgin EPM-1 Wistar rats, weighing up to 250g, originating from CEDEME of UNIFESP, were kept in adequate sanitary conditions. receiving their own food and water. Daily vaginal smears were performed to identify the estrous phase for 8 days. The animals were randomly distributed into 05 groups 1st Group (GTx), saline was administered subcutaneously, 2nd (NAC 150mgKg), 3rd (NAC 300mg / Kg), 4th (NAC 600mg / Kg) and 5th (NAC 1200mg / Kg), that were administered NAC subcutaneously on the abdominal face, 60 minutes before left unilateral ovarian transplantation in retr operitoneum and contralateral oophorectomy for purposes of histomorphological analysis, with colpocytological evaluation. Euthanasia was performed by means of anesthetic lethal dose in half of the animals on the 4th postoperative day, with a single vaginal smear collection and euthanasia on the rest of the animals, between the 14th and 16th days, after the material was collected in order to define the estrus phase. It was evaluated in the graft that the animals exhibited in all groupsreturn of estrous cycle in the later phase of the post-transplant, with better definition of regular cycle in the highest dosages of N-acetylcysteine. N-acetylcysteine induced the return of the estrous cycle in the rats' ovarian graft , mainly in the highest dosage, proving its effectiveness in revascularization of the tissue after ischemia and reperfusion. (AU)
RESUMO
O enxerto ovariano pode ser alvo dos efeitos bioquímicos do stress oxidativo causado no momento do transplante. Com o objetivo de avaliar o efeito da N-acetilcisteína no enxerto ovariano, quanto à preservação do ciclo estral, foram utilizados 50 ratos EPM-1 Wistar, fêmeas e virgens, pesando até 250g, originários do CEDEME da UNIFESP, mantidos em adequadas condições sanitárias, recebendo ração própria e água. Realizados esfregaços vaginais diários para identificação da fase estral durante 08 dias. Os animais foram distribuídos aleatoriamente em 05 grupos 1º Grupo (GTx), administrada solução salina via subcutânea, 2º (NAC 150mgKg), 3º (NAC 300mg/Kg), 4º (NAC 600mg/Kg) e 5º (NAC 1200mg/Kg), aos quais foi administrada NAC por via subcutânea em face abdominal, 60 minutos antes do transplante unilateral esquerdo do ovário em retroperitônio e à ooforectomia contra-lateral para fins de análise histomorfológica, com avaliação colpocitológica. A eutanásia foi realizada por meio da dose letal do anestésico em metade dos animais no 4º dia de pós-operatório, realizado única coleta de esfregaço vaginal e a eutanásia no restante dos animais, entre o 14 º e 16º dia, após a coleta do material para definição da fase estro . Foi avaliado no enxerto que os animais apresentaram em todos os grupos retorno de ciclo estral na fase mais tardia do pós-transplante, com melhor definição de ciclo regular nas dosagens mais elevadas de N-acetilcisteína. A N-acetilcisteína induziu o retorno do ciclo estral no enxerto ovariano de ratas, principalmente na maior dosagem comprovando sua eficácia na revascularização do tecido após isquemia e reperfusão. (AU)


Full text: Available Index: LILACS (Americas) Type of study: Controlled clinical trial Language: English Journal: J. health sci. (Londrina) Journal subject: Medicina / Sa£de P£blica Year: 2021 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of São Paulo, Post-Graduate Program in Interdisciplinary Surgical Sciences. SP, Brazil/BR / University of São Paulo, Faculty of Medicine, Department of Surgery, Laboratory of Surgical Physiopathology (LIM-62). SP, Brazil/BR

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Full text: Available Index: LILACS (Americas) Type of study: Controlled clinical trial Language: English Journal: J. health sci. (Londrina) Journal subject: Medicina / Sa£de P£blica Year: 2021 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of São Paulo, Post-Graduate Program in Interdisciplinary Surgical Sciences. SP, Brazil/BR / University of São Paulo, Faculty of Medicine, Department of Surgery, Laboratory of Surgical Physiopathology (LIM-62). SP, Brazil/BR