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  • Title: Short-term administration of an aqueous extract of kalanchoe integra var. crenata (Andr.) Cuf leaves produces no major organ damage in Sprague-Dawley rats.
    Author: Asiedu-Gyekye IJ, Antwi DA, Awortwe C, N'guessan BB, Nyarko AK.
    Journal: J Ethnopharmacol; 2014 Feb 03; 151(2):891-6. PubMed ID: 24315852.
    Abstract:
    ETHNOPHARMACOLOGICAL RELEVANCE: Kalanchoe intergra (Ki) leaf extract is an orally administered multipurpose plant medicine in Ghana and other parts of the world for the treatment of ulcers, pain and adenoma of the prostate gland. There is paucity of information concerning its short-term usage. The present study is aimed at conducting histopathological and biochemical studies in a 14-day sub-acute toxicity studies using female Sprague-Dawley rats. MATERIALS AND METHODS: Crude extract of Ki leaves was prepared and freeze-dried. A 14-day sub-acute toxicity studies was conducted using 2 week old nulliparous and non-pregnant female Sprague-Dawley rats (120-150g). Reconstituted Ki was administered at a dosage of 900mgkg(-1) (high dose), 300mgkg(-1) with a control group receiving an equivalent volume of distilled water (as vehicle) by gastric lavage. Histopathological studies of major organs and blood chemistry analysis were performed on blood obtained via cardiac puncture into EDTA tubes after euthanisation. RESULTS: There was a significant decrease in urea (p<0.016) and creatinine levels (p<0.001) in both the high and low dose groups. There was an increase in ALP levels (P=0.01) in both the high and low dose groups. ALT and AST rather decreased significantly in both the high and low dose groups (p<0.0001). Histopathological results did not show any abnormalities in all the H&E stained paraffin sections. Thus the photomicrographs of the liver, kidney and heart were within histopathological limits. CONCLUSION: Ki leaf extract is non-toxic when administered by the oral route over a time period of 14 days at the above doses.
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