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Abstract Title:

Biflavonoid fraction from Garcinia kola seed ameliorates hormonal imbalance and testicular oxidative damage by anti-tuberculosis drugs in Wistar rats.

Abstract Source:

J Basic Clin Physiol Pharmacol. 2016 Jun 1 ;27(4):393-401. PMID: 27089414

Abstract Author(s):

Aderemi Kehinde, Adedoyin Adefisan, Olayinka Adebayo, Oluwatosin Adaramoye

Article Affiliation:

Aderemi Kehinde

Abstract:

BACKGROUND: Tuberculosis (TB) is a global health problem. The effects of anti-TB drugs on male reproductive system have not been properly evaluated. We investigated the effects of anti-TB drugs on testicular antioxidant indices, sperm characteristics and hormonal levels in rats, and the protective role of kolaviron (KV), a biflavonoid from Garcinia kola seed.

METHODS: Twenty-eight male Wistar rats were assigned into four groups and orally treated with corn oil (control), anti-TB drugs [4-Tabs=isoniazid (5 mg/kg), rifampicin (10 mg/kg), pyrazinamide (15 mg/kg) and ethambutol (15 mg/kg) in combination], anti-TB drugs +KV and KV alone (200 mg/kg). Anti-TB drugs and KV were given three times per week for 8 weeks. In vitro, reducing power, inhibition of lipid peroxidation (LPO), diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl radical scavenging effects of KV were examined.

RESULTS: KV at 10, 20, 50 and 100μg/mL showed strong reducing potential and effectively scavenged DPPH and OH radicals in a concentration-dependent manner. Furthermore, KV significantly inhibited LPO in rats' liver homogenate. In vivo, administration of 4-Tabs caused a significant (p<0.05) decrease in body weight gain and weight of testis of rats. Body weight gain and weight of testis decreased by 45% and 36%, respectively, in the 4-Tabs-treated rats. Also, 4-Tabs increased testicular lipid peroxidation by 82%, with a concomitant decrease in antioxidant indices. Testicular reduced glutathione, superoxide dismutase and glutathione peroxidase decreased by 2.2-, 1.9- and 1.6-folds, respectively. Likewise, 4-Tabs markedly decreased sperm count, motility, luteinizing hormone and testosterone. Co-administration of KV with 4-Tabs normalized body weight, enhanced antioxidant system and improved sperm characteristics.

CONCLUSIONS: Kolaviron protects male reproductive system from oxidative damage by anti-tuberculosis drugs via the antioxidative mechanism.

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Sayer Ji
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