Gut microbiota-metabolic axis insight into the hyperlipidemic effect of lotus seed resistant starch in hyperlipidemic mice

Carbohydr Polym. 2023 Aug 15:314:120939. doi: 10.1016/j.carbpol.2023.120939. Epub 2023 Apr 27.

Abstract

We investigated the hyperlipidemic effect of different doses of lotus seed resistant starch (low-, medium and high-dose LRS, named as LLRS, MLRS and HLRS, respectively) in hyperlipidemic mice using gut microbiota-metabolic axis compared to high-fat diet mice (model control group, MC). Allobaculum was significantly decreased in LRS groups compared to MC group, while MLRS promoted the abundance of norank_f_Muribaculaceae and norank_f_Erysipelotrichaceae. Moreover, supplementation of LRS promoted cholic acid (CA) production and inhibited deoxycholic acid compared to MC group. Among, LLRS promoted formic acid, MLRS inhibited 20-Carboxy-leukotriene B4, while HLRS promoted 3, 4-Methyleneazelaic acid and inhibited Oleic acid and Malic acid. Finally, MLRS regulate microbiota composition, and this promoted cholesterol catabolism to form CA, which inhibited serum lipid index by gut microbiota-metabolic axis. In conclusion, MLRS can promote CA and inhibit medium chain fatty acids, so as to play the best role in lowering blood lipids in hyperlipidemia mice.

Keywords: Gut microbiota-metabolic axis; Hyperlipidemic mice; Lotus seed resistant starch; Serum lipid index; Untargeted metabolites.

MeSH terms

  • Animals
  • Diet, High-Fat
  • Gastrointestinal Microbiome*
  • Lipids
  • Mice
  • Microbiota*
  • Resistant Starch
  • Seeds

Substances

  • Resistant Starch
  • Lipids