Transcriptional profile of ethylene glycol monomethyl ether-induced testicular toxicity in rats

Drug and Chemical Toxicology
Takuya MatsuyamaKazuhiko Mori

Abstract

To clarify the molecular mechanism of ethylene glycol monomethyl ether (EGME)-induced testicular toxicity, the potential for EGME-related changes in transcript levels of genes including spermatocyte-specific genes was evaluated in the testis of rats given single dosing of EGME at 200, 600, or 2000 mg/kg. Furthermore, the contribution of decreased testicular testosterone on EGME-induced spermatocyte toxicity was investigated by comparing to transcriptional profile due to a testosterone synthesis inhibitor, ketoconazole (KET), at 30 or 300 mg/kg. EGME at 600 mg/kg or more dose-dependently caused testicular toxicity characterized by degeneration and necrosis of spermatocytes at stage VII-XIV seminiferous tubules. The spermatocyte injury was well correlated with decreased spermatocyte-specific gene expression. Analysis of upstream regulators by the Ingenuity Pathways Analysis system suggested that up-regulation of oxidative stress, protein kinase activation, and histone acetylation was involved in EGME-induced spermatocyte toxicity. Interestingly, KET decreased testicular testosterone to a similar extent compared to the EGME treatment, but KET at up to 300 mg/kg did not show any histopathological abnormality or change in the expres...Continue Reading

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Citations

Jun 30, 2021·Arhiv za higijenu rada i toksikologiju·Tihana MarićAnna Aghayanian

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