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<p>Polysaccharide extracted from <i>Grifola frondosa</i> (GFP) was selected in this study. After preliminary separation, four factions were collected, named GFP-F1, GFP-F2, GFP-F3 and GFP-F4. GPF-F2 was further separated into two fractions, namely GFP-N1 and GFP-N2. The molecular weight of GFP-N1 and GFP-N2 was 3.323×10<sup>3 </sup>kDa and 10.8 kDa, respectively. GFP-N1 was composed of glucose and galactose and 1 → 3, 1 → 4, and 1 → 6 glycosidic bonds. GFP-N2 was composed of glucose, galactose and mannose and 1 → 2, 1 → 3, 1 → 4, and 1 → 6 glycosidic bonds. GFP could significantly relieve the insulin resistance induced by HFD. GFP significantly alleviated gut microbiota disturbance caused by HFD and increased the production of short-chain fatty acids, and further reduced the expression of LPS/TLR4 inflammatory pathway. GFP significantly reduced the oxidative stress induced by HFD, increased the expression of the Nrf2/ARE signaling pathway. These results indicated that GFP could be developed as a potential ingredient for the management of insulin resistance.</p>

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Structure characterization of Grifola frondosa polysaccharide and its effect on insulin resistance in HFD-fed mice

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月8日

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  • Yin-Yi Ding,
  • Jinchi Lan,
  • Yuxin Wang,
  • Yuxiang Pan,
  • Tianyuan Song,
  • Shizhu Liu,
  • Zhenyu Gu,
  • Yujun Ge

摘要

Polysaccharide extracted from Grifola frondosa (GFP) was selected in this study. After preliminary separation, four factions were collected, named GFP-F1, GFP-F2, GFP-F3 and GFP-F4. GPF-F2 was further separated into two fractions, namely GFP-N1 and GFP-N2. The molecular weight of GFP-N1 and GFP-N2 was 3.323×103 kDa and 10.8 kDa, respectively. GFP-N1 was composed of glucose and galactose and 1 → 3, 1 → 4, and 1 → 6 glycosidic bonds. GFP-N2 was composed of glucose, galactose and mannose and 1 → 2, 1 → 3, 1 → 4, and 1 → 6 glycosidic bonds. GFP could significantly relieve the insulin resistance induced by HFD. GFP significantly alleviated gut microbiota disturbance caused by HFD and increased the production of short-chain fatty acids, and further reduced the expression of LPS/TLR4 inflammatory pathway. GFP significantly reduced the oxidative stress induced by HFD, increased the expression of the Nrf2/ARE signaling pathway. These results indicated that GFP could be developed as a potential ingredient for the management of insulin resistance.