Impacto do aumento da expressão da caspase-3 testicular em ratos jovens expostos a ivermectina

Autores

DOI:

https://doi.org/10.5380/avs.v30i4.97634

Palavras-chave:

Avermectins; Morphometry; Testis histological analysis; Seminiferous epithelium; Apoptosis

Resumo

Resumo

Estudos do nosso grupo revelaram que o tratamento com dose terapêutica de ivermectina em ratos adultos aumentou a expressão da caspase-3 e o número de túbulos que apresentaram células marcadas no lúmen tubular afetando o processo de homeostase natural testicular. Esses efeitos resultaram em comprometimentos da espermatogênese e da espermiogênese. Este estudo investigou se a exposição a uma dose terapêutica de ivermectina em idades jovem e peripúberals afetou a espermatogênese, a espermiogênese e a expressão da caspase-3 no testículo de ratos. Métodos: Ratos Wistar receberam duas doses de 1,0 mg/kg IVM ou solução salina a 0,9% aos 29 e 44 dias de idade. Aos 45 dias de idade, esses grupos foram eutanasiados, e os ratos e testículos foram pesados. Determinamos a avaliação macroscópica dos animais e a avaliamos por  morfometria microscópica o epitélio seminífero. A apoptose do tecido testicular foi feita usando a metodologia de Caspase. O peso corporal do rato, o volume testicular, o peso relativo, o eixo maior e menor e a frequência de células de Leydig não diferiram entre os grupos. A altura tubular do epitélio aumentou em ratos tratados com ivermectina em comparação ao grupo controle. No grupo IVM, a análise histopatológica mostrou desorganização do epitélio germinativo, vacuolização, descamação de células no lúmen tubular e núcleos celulares contendo aspectos picnóticos. A ivermectina aumentou a expressão da caspase-3 em túbulos medianos e fortemente marcados, sugerindo possível dano testicular em idades jovens e peripuberais em ratos machos

Biografia do Autor

Maria Martha Bernardi, Universidade Paulista

Instituto de Ciências da Saúde, Pós graduação em Patologia Ambiental e eExperimental

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Publicado

2025-10-29

Como Citar

Bernardi, M. M. (2025). Impacto do aumento da expressão da caspase-3 testicular em ratos jovens expostos a ivermectina. Archives of Veterinary Science, 30(4). https://doi.org/10.5380/avs.v30i4.97634