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Abstract Title:

Protective role of glutamine against cadmium-induced testicular dysfunction in Wistar rats: Involvement of G6PD activity.

Abstract Source:

Life Sci. 2020 Feb 1 ;242:117250. Epub 2019 Dec 31. PMID: 31899225

Abstract Author(s):

Kehinde S Olaniyi, Oluwatobi A Amusa, Adesola A Oniyide, Isaac O Ajadi, Nifesimi T Akinnagbe, Salam S Babatunde

Article Affiliation:

Kehinde S Olaniyi

Abstract:

BACKGROUND: Endocrine disruptor such as cadmium has been widely reported to cause testicular toxicity, which contributes to recent decline in male fertility worldwide. Glutamine, the most abundant amino acid in the body has been demonstrated to exert protective effects in cellular toxicity. However, its role in testicular toxicity is unknown. The present study is therefore aimed at investigating the effects of glutamine supplementation on cadmium-induced testicular toxicity, and the possible involvement of glucose-6-phosphate dehydrogenase (G6PD) activity.

MATERIALS AND METHOD: Male Wistar rats weighing 160-190 g were allotted into 4 groups (n = 5/group): The groups received vehicle (distilled water; p.o.), glutamine (1gkg; p.o.), cadmium chloride (5mgkgp.o.) and Cadmium chloride plus glutamine respectively, daily for 30 days. Biochemical and histological analyses were performed with appropriate method.

RESULTS: Administration of cadmium significantly decreased body weight, sperm count, motility and viability, as well as altered sperm morphology and progressivity. Cadmium also caused atrophy of the seminiferous tubule in addition to disrupted testicular architecture, lumen, Sertoli cells and spermatogonia. Similarly, serum and testicular aspartate transaminase, and malondialdehyde significantly increased, and G6PD, glutathione, nicotinamide adenine dinucleotide phosphate and nitric oxide significantly decreased with corresponding decrease in follicle stimulating hormone, luteinizing hormone and testosterone in cadmium-treated animals compared with control groups. However, supplementation with glutamine attenuated these alterations.

CONCLUSION: The present study demonstrates that cadmium induces testicular dysfunction that is attributable to defective G6PD and accompanied by increased lipid peroxidation and impaired NO-dependent endothelial function. Interestingly, glutamine supplementation ameliorates cadmium-induced testicular dysfunction through enhancement of G6PD activity.

Study Type : Animal Study

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Sayer Ji
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