来自Imperatae Rhizoma的一种多糖的结构特征和低血糖活性
Shengcheng Mi1, Wu Yan2, Lingge Wei2
1School of Forestry, Northeast Forestry University, Harbin 150040, China.
International journal of biological macromolecules
|March 31, 2025
概括
这项研究用超声波辅助提取方法从Imperatae Rhizoma中分离出一种强效的低血糖多糖 (IRP-1). 在实验室中,IRP-1通过改善葡萄糖代谢和抗氧化活性,显示出显著的抗糖尿病作用.
科学领域:
- 药理学和植物化学
- 生物化学 生物化学
- 药用化学 医学化学
背景情况:
- Imperatae Rhizoma (IRP) 是一种具有潜在药用功能的传统草药.
- 多糖因其多样化的生物活动而闻名,包括降糖效应.
- 从自然来源开发新的抗糖尿病药物是研究的一个关键领域.
研究的目的:
- 从Imperatae Rhizoma中提取和描述多糖类.
- 评估分离的多糖的低血糖和抗氧化活性.
- 为Imperatae Rhizoma多糖在糖尿病管理中的治疗潜力提供科学依据.
主要方法:
- 使用超声波辅助提取方法从Imperatae Rhizoma中获得多糖.
- 通过使用DEAE-52纤维素和Sephadex G-100染色学来实现净化.
- 结构特征包括分子量,单糖化合物组成和光谱分析 (IR,NMR).
- 实验室低血糖效应在抗胰岛素的HepG2细胞中进行了评估,测量了葡萄糖吸收,糖原合成和酶活性.
- 通过测量SOD,CAT,GSH-Px,GSH,MDA和ROS水平来评估抗氧化特性.
主要成果:
- 一个多糖分数,IRP-1,被分离出来,并被描述为一个异多糖 (29.79 kDa),包括拉姆诺斯,阿拉比诺斯,银糖,葡萄糖,西洛斯,曼诺斯和葡萄糖酸.
- IRP-1表现出显著的α-葡萄糖酶抑制活性.
- 在体外研究表明,IRP-1在IR-HepG2细胞中增强了葡萄糖消耗和糖原合成.
- IRP-1通过增加抗氧化酶活动和水平,同时降低氧化应激标志物,显示出强大的抗氧化作用.
结论:
- 从Imperatae Rhizoma中分离出来的异质多糖糖化物IRP-1具有显著的低血糖和抗氧化特性.
- IRP-1的机制包括改善葡萄糖代谢和减轻氧化应激.
- 这些发现支持Imperatae Rhizoma多糖类作为糖尿病治疗剂的潜力.
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