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GC–MS analysis, toxicological and oral glucose tolerance assessments of methanolic leaf extract of Eucalyptus globulus
Future Journal of Pharmaceutical Sciences Pub Date : 2021-08-17 , DOI: 10.1186/s43094-021-00312-5
Bamidele Stephen Ajilore 1 , Tolulope Olamide Oluwadairo 2 , Olubukola Sinbad Olorunnisola 3 , Olumide Samuel Fadahunsi 3 , Peter Ifeoluwa Adegbola 3
Affiliation  

Eucalyptus globulus leaf has shown promising potential in its efficacy to manage some diseases but little is known about its safety and its use in the management of diabetes. This study was designed to identify the bioactive compounds present in Eucalyptus globulus leaf extract (EGLEX), assess its toxic effects and its oral glucose tolerance ability. Powdered Eucalyptus globulus leaf was extracted with methanol using standard extraction procedure. Preliminary phytochemistry, gas chromatography–mass spectrometry (GCMS) analysis of the extract, its acute and subacute toxic effects and on its glucose tolerance (in-vivo) capability were assessed using standard laboratory techniques. EGLEX was tested positive for the presence of alkaloids, cardiac glycosides, flavonoids, tannins, phlobatannins and terpenoids. Nine compounds were identified by GCMS analysis of the leaf extract. EGLEX (up to 300 mg/kg bwt) showed no toxicity in all the rats dosed for the period of 14 days. The histomorphological study of the liver and kidney tissues harvested from rats dosed with 2000 mg/kg bwt showed features of histoarchitectural distortions in the two tissues. EGLEX (200 mg/kg bwt) further demonstrated effective glucose utilization as insulin and metformin. The results obtained deduced that EGLEX is safe at a lower dose of 300 mg/kg bwt but toxic at higher dose of 2000 mg/kg bwt, and that single dose (200 mg/kg bwt) of the plant extract prevented hyperglycemia in normal rats.

中文翻译:

蓝桉甲醇叶提取物的 GC-MS 分析、毒理学和口服葡萄糖耐量评估

Eucalyptus globulus 叶在治疗某些疾病的功效方面显示出有希望的潜力,但对其安全性及其在糖尿病治疗中的用途知之甚少。本研究旨在鉴定蓝桉叶提取物 (EGLEX) 中存在的生物活性化合物,评估其毒性作用和口服葡萄糖耐受能力。使用标准提取程序用甲醇提取粉状桉树叶。使用标准实验室技术评估了提取物的初步植物化学、气相色谱-质谱 (GCMS) 分析、其急性和亚急性毒性作用及其葡萄糖耐量(体内)能力。EGLEX 的生物碱、强心苷、黄酮类化合物、单宁、多酚单宁和萜类化合物的检测呈阳性。通过叶提取物的 GCMS 分析鉴定了九种化合物。EGLEX(高达 300 mg/kg bwt)在所有给药的大鼠中均未显示毒性 14 天。从接受 2000 mg/kg bwt 的大鼠采集的肝脏和肾脏组织的组织形态学研究显示两种组织的组织结构扭曲特征。EGLEX (200 mg/kg bwt) 进一步证明了葡萄糖作为胰岛素和二甲双胍的有效利用。获得的结果推断 EGLEX 在 300 mg/kg bwt 的较低剂量下是安全的,但在 2000 mg/kg bwt 的较高剂量下有毒,并且单次剂量(200 mg/kg bwt)的植物提取物可预防正常大鼠的高血糖症. 从接受 2000 mg/kg bwt 的大鼠采集的肝脏和肾脏组织的组织形态学研究显示两种组织的组织结构扭曲特征。EGLEX (200 mg/kg bwt) 进一步证明了葡萄糖作为胰岛素和二甲双胍的有效利用。获得的结果推断 EGLEX 在 300 mg/kg bwt 的较低剂量下是安全的,但在 2000 mg/kg bwt 的较高剂量下有毒,并且单次剂量(200 mg/kg bwt)的植物提取物可预防正常大鼠的高血糖症. 从接受 2000 mg/kg bwt 的大鼠采集的肝脏和肾脏组织的组织形态学研究显示两种组织的组织结构扭曲特征。EGLEX (200 mg/kg bwt) 进一步证明了葡萄糖作为胰岛素和二甲双胍的有效利用。获得的结果推断 EGLEX 在 300 mg/kg bwt 的较低剂量下是安全的,但在 2000 mg/kg bwt 的较高剂量下有毒,并且单次剂量(200 mg/kg bwt)的植物提取物可预防正常大鼠的高血糖症.
更新日期:2021-08-17
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