Extracts from stems and leaves of Chrysanthemum morifolium ameliorate gut dysfunction by a fecal metabolomic approach / 中草药

ABSTRACT

Objective: To holistically evaluate the protective effects of water and ethanol extracts of stems and leaves of Chrysanthemum morifolium and its underlying mechanism. Methods: Gut dysfunction model was established by injection of liposaccharide in rabbits, and administrated with water and ethanol extracts of stems and leaves of C. morifolium to investigate the treatment. Feces of rabbits in each group were collected and analyzed by 1H-NMR complemented with multivariate statistical methods to evaluate the metabolic alteration. Results: Compared with the control group, the levels of lactate and formate in liposaccharide intoxicated model group were significantly increased, and the concentrations of propionate, glutamine, glutamate, aspartate were notably decreased. Both the water and ethanol extracts of stems and leaves of C. morifolium ameliorated gut dysfunction of rabbits in a similar manner, increased the decreased levels of aspartate, adenine, phenylalanine, tyrosine induced by liposaccharide, and reduced the elevated content of formate. Conclusion: Pathway analysis revealed that both the water and ethanol extracts of stems and leaves of C. morifolium could regulate the disturbed phenylalanine, tyrosine and tryptophan biosynthesis; disordered alanine, aspartate and glutamate metabolism and imbalanced glycine, serine and threonine amino acid metabolism, exerting a holistic protective effect on gut disorder. Thus, this study lays a scientific foundation for the resource utilization of stems and leaves of C. morifolium after the harvest of the inflorescence.