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Effect of the ethanolic extract from Fagara tessmannii on testicular function, sex reproductive organs and hormone level in adult male rats

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The effect of ethanolic extract of Fagara tessmannii, wide medicinal plants used on reproductive function in South Cameroon, was investigated in male rats. Twenty male sexually experienced rats (four groups) were orally treated with vehicle, 0.01, 0.1, 1 g kg−1 BW per day of F. tessmannii (equivalent to 16.67 g, 33.33 g, 50 g, 66.66 g kg−1 dry raw material) for 14 days, the upper limit dose without any clinical sign of toxicity was 2 g kg−1. Fagara tessmannii extract negatively affected weight of accessory organs and significantly affected body weight gain at dose 1 g kg−1 (P < 0.05) in treated rats. The weight of epididymis and seminal vesicle significantly decreased at low doses (0.01 g kg−1) while the prostate weight decreased at all doses (P < 0.05). The transit of spermatozoa in cauda epididymidis significantly increased at lower dose of 0.01 g kg−1 (P < 0.05). In addition, F. tessmannii extract affected neither daily sperm production (DSP) and DSP per g nor sperm count in vas deferens and epididymis. The length of stages IX–I of the seminiferous tubule and serum testosterone level increased dose-dependently following 14 days of treatment (P < 0.05). The results suggest that F. tessmannii, 14 days after treatment, may improve spermatogenesis, testosterone level and sperm transit in cauda epididymidis but negatively impair reproductive organ activities.
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Keywords: Fagara tessmannii; spermatogenesis; testosterone

Document Type: Research Article

Affiliations: 1:  Faculty of Science, Department of Animal Science, University of Douala, Douala, Cameroon 2:  Faculty of Sciences and Philosophy, Department of Biological and Physiological Sciences, Universidad Peruana Cayetano Heredia, Lima, Perú 3:  Faculty of Science, Department of Animal Physiology, University of Yaounde I, Yaoundé, Cameroon

Publication date: April 1, 2011

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