Objectives: Several studies establish the therapeutic properties of various plants which are sometimes a source of minerals, vitamins and phytochemical compounds. However, many studies evoked potential toxic of some. In Cameroon, () is used in folk medicine to treat several diseases, but there are not much informations about its toxicity. This study evaluate its acute and sub-acute toxicity.
Methods: Our study was undertaken to evaluate acute and sub-acute toxicity of aqueous leaves extract of . The study was conducted using the OECD guidelines about oral toxicity's study. For acute toxicity, rats were administrated single oral dose of 5,000 mg/kg body weight (b.w) and monitored for death and weight impairment during seven days. In sub-acute toxicity, experimental rats received daily doses of 250,500 and 1,000 mg/kg b.w during 28 consecutive days. The toxics effects of the extract were assessed using anthropometric, haematological, biochemical parameters as well as histology of vital body's organs (liver, kidneys, lungs and spleen).
Results: lethal dose 50 (LD) was find to be greater than 5,000 mg/kg b.w in rats. In sub-acute toxicity, we observed significant increase of body weight, food and water consumption with the maximums of 15.14, 24.52 and 28.86% respectively at 1,000 mg/kg b.w. There was no significant change in haematological parameters. However, we observed significant change in biochemical parameters. Furthermore, structural disorders were noticed in liver and kidneys of animals treated with .
Conclusion: Data obtained suggesting that extract could be safe in single administration, but with toxic effects in repeated treatment.
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