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Abstract Title:

Vitamin C exerts novel protective effects against cadmium toxicity in mouse spermatozoa by inducing the dephosphorylation of dihydrolipoamide dehydrogenase.

Abstract Source:

Reprod Toxicol. 2017 Nov 20 ;75:23-32. Epub 2017 Nov 20. PMID: 29158198

Abstract Author(s):

Lirui Wang, Peifei Li, Yi Wen, Qiangzhen Yang, Linqing Zhen, Jieli Fu, Yuhua Li, Sisi Li, Chengxiao Han, Xinhong Li

Article Affiliation:

Lirui Wang

Abstract:

Cadmium (Cd) has been reported to inhibit mouse sperm motility by inducing the tyrosine phosphorylation of dihydrolipoamide dehydrogenase (DLD). This study aimed to assess the potential effects of vitamin C (Vc) on ameliorating Cd-induced tyrosine phosphorylation of DLD and the specific underlying mechanism. Vc induced the dephosphorylation of DLD or inhibited the tyrosine phosphorylation of DLD. Accordingly, DLD activity, nicotinamide adenine dinucleotide hydrogen (NADH) levels, ATP levels and motility parameters were all restored to normal levels by Vc. Moreover, the effects of Vc on ameliorating these indicators had striking similarities to the effects of ethylenediaminetetraacetic acid (EDTA). In addition, neither the antioxidant melatonin nor the universal oxidant H2O2 influenced the tyrosine phosphorylation of DLD. Hence, the protective effects of Vc on the tyrosine phosphorylation of DLD might be attributed to its binding to Cd ions outside or inside sperm, and were not due to its antioxidant properties.

Study Type : In Vitro Study
Additional Links
Pharmacological Actions : Spermatogenic : CK(12) : AC(2)

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