Início
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Arquivos
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v. 2 n. 3 (2021)
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II Congresso Brasileiro de Saúde On-line
USO DE 5-FLUOROURACIL IMPACTA A PROPORÇÃO DE FIBRAS COLÁGENAS NA REGIÃO DA CABEÇA DO EPIDÍDIMO DE RATOS ADULTOS
Autores
Letícia Ganem Rillo Paz Barateiro
Pedro Luiz Zonta De Freitas
Lilian Catarim Fabiano
Nilza Cristina Buttow
Jaqueline De Carvalho Rinaldi
Palavras-chave:
COLÁGENO, MATRIZ EXTRACELULAR, MORFOLOGIA, QUIMIOTERAPIA, SISTEMA REPRODUTOR MASCULINO
Resumo
Introdução: O uso do quimioterápico 5-fluorouracil (5-FU) pode causar toxicidade e danos colaterais a muitos órgãos. Todavia, há poucos estudos que investigam esses danos nos órgãos do sistema reprodutor masculino, por exemplo o epidídimo, o qual se destaca por armazenar e maturar os espermatozoides. Sabendo que a manutenção da histoarquitetura epididimária é importante para garantir seu desempenho funcional, faz-se relevante avaliar o colágeno presente na matriz extracelular devido ao seu papel estrutural. Objetivo: Avaliar o impacto do 5-FU nas fibras colágenas tipos I e III do epidídimo de ratos adultos. Material e métodos: Este trabalho recebeu aprovação pelo Comitê de Ética no Uso de Animais da Universidade Estadual de Maringá (protocolo: 4422140918). Quatorze ratos Wistar machos foram divididos em dois grupos (n=7): grupo controle (GC) e grupo quimioterapia (G5-FU). Os animais do G5-FU receberam, via intraperitoneal, o 5-FU por quatro dias consecutivos na dose de 15 mg/kg, com redução para 6 mg/kg por mais quatro dias alternados e dose final de 15 mg/kg. Já os animais do GC foram administrados com soro fisiológico pela mesma via e período referidos. No 15° dia, realizou-se a eutanásia dos ratos de ambos os grupos. O epidídimo foi dissecado, fixado em Methacarn e incluído em blocos de parafina para posterior realização de cortes semi-seriados de 5 μm. Estes foram corados com Picrosírius Red para realização da densitometria do colágeno na região da cabeça do epidídimo. Por fim, a análise estatística foi executada pelo teste Mann Whitney e os resultados expressos em porcentagem. Resultados: Houve diferença significativa (p<0,05) entre os grupos em relação à deposição das fibras colágenos tipo I, mas não às do tipo III. O colágeno tipo I ocupou aproximadamente 4,43% da área total no GC e 3,46% no G5-FU. Esses dados indicam que a quimioterapia impactou a organização da matriz extracelular, modificando a histoarquitetura epididimária. Mais estudos são necessários para compreender os mecanismos envolvidos bem como o reflexo disto na função do órgão. Conclusão: O 5-FU alterou a densitometria do colágeno na região da cabeça do epidídimo de ratos Wistar adultos.
Como Citar
Barateiro, L. G. R. P. ., Freitas, P. L. Z. D. ., Fabiano, L. C. ., Buttow, N. C., & Rinaldi, J. D. C. . (2021). USO DE 5-FLUOROURACIL IMPACTA A PROPORÇÃO DE FIBRAS COLÁGENAS NA REGIÃO DA CABEÇA DO EPIDÍDIMO DE RATOS ADULTOS. Revista Multidisciplinar Em Saúde , 2 (3), 32. https://doi.org/10.51161/rems/1434
Seção
II Congresso Brasileiro de Saúde On-line
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