对黄金葡萄球菌 (Staphylococcus aureus) 的抑制作用,由Aesculus sp. 的A分类酶. 提取物及其毒性评估
Octavian Tudorel Olaru1, George Mihai Nitulescu1, Andreea Miruna Codreanu2
1Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania.
Plants (Basel, Switzerland)
|May 25, 2024
概括
马栗提取物显示出潜在的抗病毒剂对黄金葡萄球菌的抗病毒作用. 艾斯库勒斯帕维亚水提取物有效抑制细菌毒性关键因子索尔塔A,对人类细胞和水生生物有低毒性.
科学领域:
- 微生物学和生物化学
- 自然产品化学 自然产品化学
- 毒理学 毒理学 毒理学
背景情况:
- 抗病毒策略通过向细菌病原性因素,为传统抗生素提供了替代方案.
- 排列酶A是格拉姆阳性细菌中的关键酶,对于定表面毒性因子至关重要.
- 来自Aesculus物种 (马栗) 的提取物因其潜在的抗微生物和抗病毒性质而被探索.
研究的目的:
- 评估Aesculus物种提取物对Staphylococcus aureus类型酶A的抑制活性.
- 为了确定提取物中的多含量和化学特征.
- 为了评估提取物的毒性,使用体外 (纤维细胞细胞系) 和体内 (Daphnia magna) 模型.
主要方法:
- 来自四种Aesculus物种的乙醇和水提取物的制备:A. pavia,A. parviflora,A. x carnea和A. hippocastanum.
- 高性能液体染色学 (HPLC) 用于提取物表征和Folin-Ciocalteu测定总多含量.
- 酶抑制测定用于确定对排列酶A的半最大抑制度 (IC50),以及使用大夫尼亚大菌和纤维细胞细胞系中位数致命度 (LC50) 的毒性评估.
主要成果:
- 索尔塔酶A抑制的半最大抑制度 (IC50) 值在82.70至304.31μg/mL之间.
- 艾斯库勒斯·帕维亚 (Aesculus pavia) 的水提取物表现出对类酶A的最高抑制活性.
- 埃斯库勒斯水提取物对人类纤维细胞和大夫尼亚大菌具有低毒性,在纤维细胞检测中没有观察到500μg/mL的显著毒性.
结论:
- 艾斯库勒斯瓜水提取物是一种强有力的葡萄球菌黄金菌分类酶A的抑制剂.
- 提取物具有有利的低毒性,使其成为开发新型抗病毒疗法的有希望的候选人.
- 对这种提取物的进一步研究可能会导致新的策略来对抗细菌感染,而不会促进抗生素耐药性.
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