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关于多糖化合物的结构和抗炎活性在五种树生物中的差异的研究

Hua Zhu¹, Hui-Wen Zhang², Jia-Hao Fan²

¹School of Life Science, Nanjing Normal University, Nanjing 210046, China.

|May 14, 2025

概括

对Dendrobium多糖体 (DPs) 的结构分析揭示了曼和葡萄糖比例的关键差异,影响了它们的抗炎性质. 较高的曼与葡萄糖比率和特异分子量与增强的治疗效果相关.

科学领域:

植物化学植物化学
药理学药理学是指药理学的学科.
分析化学分析化学

背景情况:

丹德罗物种以它们的药用和食用特性而闻名,其中多糖是它们的主要生物活性成分.
了解Dendrobium多糖体 (DPs) 的结构变异对于它们在传统和现代医学中的有效利用至关重要.

研究的目的:

为了比较来自五种Dendrobium物种的多糖化合物的分子量,单糖化合物组成和糖化键类型.
调查DPs及其抗炎作用之间的结构-活性关系.
为了建立基于Dendrobium的治疗药物的质量控制参数.

主要方法:

分析分子量 (Mw),单糖化合物组成 (使用HPLC等技术),以及糖键类型.
分层集群分析 (HCA) 用于结构性比较.
通过测量用脂多糖 (LPS) 刺激的RAW 264.7细胞中的氧化 (NO) 生产和亡,对抗炎症活性进行体外评估.

主要成果:

DPs主要由曼 (Man) 和葡萄糖 (Glc) 组成,不同物种的比例 (Am/Ag) 不同 (0.453.88).
已确定的主要甘氨酸链接是 →4) Manp(1→和 →4) Glcp(1→,在五种Dendrobium物种中具有不同的摩尔比率.
来自Dendrobium huoshanense (DH) 的多糖体显示出最强烈的抑制NO生产和LPS诱导的亡.

结论:

在DP中存在显著的结构差异,特别是在甘氨酸键类型和比例上,导致各种抗炎活性.
最佳的抗炎活性与高的→4)Manp(1→/→4)Glcp(1→比率和3.343 × 105至13.540 × 105Da的分子量范围有关.
临床使用的Dendrobium的质量评估应包括分子重量和糖化键组成的分析,以确保一致的疗效.

关键词:

丹德罗比亚姆 (Dendrobium) 是一个生物体.它具有抗炎活性,具有抗炎活性.聚糖类是一种多糖类.糖类的映射糖类的映射

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