Add time:07/23/2019         Source:sciencedirect.com

Procyanidins B2 (PB2) was found to block T-2 toxin-induced reproductive toxicity and may be used as a dietary preventive agent. We investigated the mechanism of PB2 in blocking the T-2 toxin-induced apoptosis in Leydig cells in conjunction with analysis of T-2 toxin induced proapoptotic responses in Leydig cells including induction of oxidative stresses. The stress inducible proteins ASK, p38 and JNK were increased in response to T-2 toxin and the induction was attenuated by PB2. Furthermore, we showed that T-2 toxin suppressed mitochondrial membrane potential, reduced the levels of the mitochondrial respiratory chain complex I-V, adversely affected the level of mitochondrial proteins CypD, Bax, Bak, Bcl-2, Bcl-xl, Bax/Bcl-2 and cyt c and these adverse effects were counteracted by PB2 in dose-dependent manner. In summary, our results showed great potential of PB2 in preventing T-2 toxin-induced toxicity in Leydig cells through its potent antioxidant property.

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