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The in vivo toxicity evaluation of leaf and root methanolic extracts of Tephrosia vogelii Hook.f using animal model
Clinical Phytoscience Pub Date : 2020-11-10 , DOI: 10.1186/s40816-020-00216-6
Stephano Hanolo Mlozi , Juma A. Mmongoyo , Musa Chacha

Traditionally, herbal medicines are commonly used to cure several diseases since immemorial of human life. Nevertheless, the safety of some traditionally used medicinal plants is uncertain. Since Tephrosia vogelii Hook.f is a traditionally used medicinal plant, the effects of its extracts were evaluated on lethality (LD50) and sub-acute toxicity in this study. Phytochemistry screening and an in vivo toxicity evaluation of leaf and root methanolic extracts of T. vogelii using laboratory albino rats were conducted. Methanolic extracts of doses 600, 1200, 2000 and 5000 mg/kg body weights were administered single dose in rats to observe deaths within 72 h in order to determine the LD50. Methanolic extracts doses of 600, 1200 and 2000 mg/kg body weights were consecutively administered for 14 days in order to evaluate sub-acute toxicity. Tannins, steroids, terpenoids, flavonoids and saponins were identified in the phytochemical screening. The LD50 experiments revealed zero deaths of rats for the administered doses, 600 to 5000 mg/kg body weight. Histopathological examination of liver and kidney for sub-acute toxicity test showed safety at all doses except root methanolic extracts dose of 2000 mg/kg which exhibited necrosis and vacuolation of liver cells on the 14th day. Nonetheless, hepatic necrosis and hepatic vacuolation disappeared upon time elongation without dose administration to 28th day. The conducted toxicity evaluation of methanolic leaf and root extracts in albino rats revealed no deleterious effects, henceforth, suggesting that T. vogelii could be safe to users using it as a medicinal plant.

中文翻译:

的叶和根甲醇提取物的体内毒性评价非洲山毛豆使用动物模型Hook.f

传统上,自远古以来,草药就普遍用于治疗多种疾病。然而,某些传统药用植物的安全性尚不确定。由于Tephrosia vogelii Hook.f是传统上使用的药用植物,因此在本研究中评估了其提取物对致死性(LD50)和亚急性毒性的影响。进行了使用实验室白化病大鼠的植物化学筛选,以及对伏氏锥虫叶和根甲醇提取物的体内毒性评估。在大鼠中单次给予600、1200、2000和5000 mg / kg体重的甲醇提取物,观察其在72小时内的死亡,以确定LD50。为了评估亚急性毒性,连续服用14天的600、1200和2000 mg / kg体重的甲醇提取物。单宁,在植物化学筛选中鉴定出类固醇,类萜,类黄酮和皂苷。LD50实验显示,对于600至5000 mg / kg体重的给药剂量,大鼠零死亡。肝和肾脏的组织病理学检查显示为亚急性毒性试验,除2000毫克/千克的根甲醇提取物剂量在第14天表现出坏死和肝细胞空泡外,所有剂量均安全。然而,在不延长剂量至第28天时,肝坏死和肝空泡消失。进行的对白化病大鼠甲醇叶和根提取物的毒性评估表明,此后没有有害作用,这表明沃格氏锥虫对用作药用植物的使用者可能是安全的。LD50实验显示,对于600至5000 mg / kg体重的给药剂量,大鼠零死亡。肝和肾脏的组织病理学检查显示为亚急性毒性试验,除2000毫克/千克的根甲醇提取物剂量在第14天表现出坏死和肝细胞空泡外,所有剂量均安全。然而,在不延长剂量至第28天时,肝坏死和肝空泡消失。进行的对白化病大鼠甲醇叶和根提取物的毒性评估表明,此后没有有害作用,这表明沃格氏锥虫对用作药用植物的使用者可能是安全的。LD50实验显示,对于600至5000 mg / kg体重的给药剂量,大鼠零死亡。肝和肾脏的组织病理学检查显示为亚急性毒性试验,除2000毫克/千克的根甲醇提取物剂量在第14天表现出坏死和肝细胞空泡外,所有剂量均安全。然而,在不延长剂量至第28天时,肝坏死和肝空泡消失。进行的对白化病大鼠甲醇叶和根提取物的毒性评估表明,此后没有有害作用,这表明沃格氏锥虫对用作药用植物的使用者可能是安全的。肝和肾脏的组织病理学检查显示为亚急性毒性试验,除2000毫克/千克的根甲醇提取物剂量在第14天表现出坏死和肝细胞空泡外,所有剂量均安全。然而,在不延长剂量至第28天时,肝坏死和肝空泡消失。进行的对白化病大鼠甲醇叶和根提取物的毒性评估表明,此后没有有害作用,这表明沃格氏锥虫对用作药用植物的使用者可能是安全的。肝和肾脏的组织病理学检查显示为亚急性毒性试验,除2000毫克/千克的根甲醇提取物剂量在第14天表现出坏死和肝细胞空泡外,所有剂量均安全。然而,在不延长剂量至第28天时,肝坏死和肝空泡消失。进行的对白化病大鼠甲醇叶和根提取物的毒性评估表明,此后没有有害作用,这表明沃格氏锥虫对用作药用植物的使用者可能是安全的。
更新日期:2020-11-12
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