在调节肠道微生物群和缓解糖尿病前期时,Konjac glucomannan的结构功能关系具有不同的乙化度
Hongchao Wang1, Yurong Zhao1, Danting Dang1
1State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, 214122, Jiangsu, China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.
Carbohydrate polymers
|March 14, 2026
概括
康杰克葡萄甘 (KGM) 的高乙化通过调节肠道细菌来增强其抗糖尿病作用. 这种结构-功能洞察力指导了基于KGM改进的糖尿病预防疗法的开发.
科学领域:
- 生物化学 生物化学
- 微生物学 微生物学
- 营养科学 营养科学
背景情况:
- 糖尿病前期是一种具有血糖升高的代谢状况,是预防2型糖尿病干预的关键阶段.
- 康杰克葡萄甘 (KGM) 在糖尿病管理中显示出潜力,但其特定的结构功能关系尚不清楚.
研究的目的:
- 研究KGM的乙化程度 (DS) 如何影响其对抗糖尿病前期的有效性.
- 探索潜在的机制,特别是肠道微生物群调节的作用.
主要方法:
- 具有不同乙化度的KGM的结构特征 (AcKGM).
- 在体外发酵使用糖尿病前的便样本来评估肠道微生物群的变化.
- 单种植试验以确定细菌对AcKGM的偏好.
- 在糖尿病前期动物模型中进行体内研究,以评估代谢和炎症影响.
主要成果:
- 乙化改变了KGM的DS,分子量和粘度,同时保留了它的骨干.
- 特别是高DS的AcKGM丰富了特定的肠道细菌,如Bacteroides uniformis和Bacteroides coprocola.
- 在体内研究显示,AckGM剂量依赖改善了葡萄糖/脂质代谢,减少了炎症,改善了脂肪肝.
- 这些改善与肠道微生物群的丰富和增加有益的代谢物,如D-pantothenic酸相关.
结论:
- 乙化程度显著影响KGM的生物活性和抗糖尿病疗效.
- 更高的DS增强了KGM调节肠道微生物群的能力,从而改善了代谢健康.
- 结果为优化KGM结构用于糖尿病前期治疗提供了机制性见解.
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