Abstract Title:

Parastar insecticide induced changes in reproductive parameters and testicular oxidative stress biomarkers in Wistar male rats.

Abstract Source:

Toxicol Ind Health. 2018 Jul ;34(7):499-506. Epub 2018 May 7. PMID: 29734926

Abstract Author(s):

Edouard Akono Nantia, Antoine S Kada, Faustin Pt Manfo, Nehemiah N Tangu, Kaghou M Mbifung, Desire H Mbouobda, Augustave Kenfack

Article Affiliation:

Edouard Akono Nantia


Parastar is an insecticide formulation of lambda-cyhalothrin and imidacloprid, and it is largely used for crop production improvement in Santa, North West Region of Cameroon. This study aimed at evaluating the effects of Parastar on reproductive parameters and testicular oxidative stress in adult albino Wistar male rats. Twenty rats (154 g± 28 g) were divided into four groups of five animals each and treated daily with either distilled water (10 mL/kg), 1.25, 2.49 or 6.23 mg/kg of Parastar, respectively, for 35 days. After treatment, animal reproductive function was evaluated through fertility tests, sperm characteristics, testosterone levels and organ weights, while oxidative stress biomarkers were determined on testicular homogenates. Parastar administration resulted into increased seminal vesicle and prostate weights, while body weight remained unaffected. Parastar dose-dependently reduced sperm density and mobility, and the highest dose decreased serum testosterone levels. Parastar also modulated stress biomarkers with increased thiobarbituric acid reactive substances levels, decreased glutathione levels and inhibition of catalase and superoxide dismutase activities. In conclusion, Parastar negatively affected male reproductive function through alteration of testosterone levels, sperm parameters and induction of oxidative stress in rats.

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