Abstract
Diabetes strongly influences the patient’s quality of life. The incidence of type 2 diabetes (T2D) accounts for approximately 90% of diabetic patients. Natural polysaccharides have been widely used for diabetes management. Changes in gut microbiota can also be used for the prevention and treatment of diabetes. In this review, the effects of different natural polysaccharides on gut microbiota, as well as the relationship between diabetes and the gut microbiome are summarized. The intestine is the primary location in which natural polysaccharides exert their biological activities and plays an important role in maintaining healthy bodily functions. Polysaccharides change the composition of the gut microbiota, which inhibits pathogen invasion and promotes beneficial bacterial growth. In addition, the gut microbiota degrade polysaccharides and produce metabolites to further modify the intestinal environment. Interestingly, the metabolites (short chain fatty acids and other bioactive components) have been shown to improve gut health, control glycemia, lower lipids, reduce insulin resistance, and alleviate inflammation. Therefore, understanding the underlying mechanisms by which soluble polysaccharides improve T2D through regulating the gut microbiota and provide a future reference for the management of T2D and its associated complications.
Keywords: Type 2 diabetes, polysaccharides, gut microbiota, metabolite, processing, prebiotics.
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