Structural characteristics of a hypoglycemic polysaccharide from Fructus Corni.
Carbohydr Res
; 506: 108358, 2021 Aug.
Article
em En
| MEDLINE
| ID: mdl-34111687
ABSTRACT
PFC-3 is a homogeneous polysaccharide extracted from the dried pulps of Fructus Corni with a molecular weight of 40.3 kDa. The crude polysaccharide was obtained and further purified by DEAE-Sephadex A-25 and Sephadex G-100 columns to investigate its structure and glycemic effect. The monosaccharides in the PFC-3, determined by high-performance liquid chromatography, consisted of glucose (Glc), xylose (Xyl), and galactose (Gal) with a mass molar ratio of 2.3512.491.00. The methylation analysis combined with 1D (1H and 13C), and 2D NMR (1H-1H COSY, HSQC, and HMBC) further demonstrated that PFC-3 was mainly composed of 1,3-α-D-Xylp, 1,6-α-D-Galp, 1,2-α-D-Glcp, and T-α-D-Galp, and contained a backbone fragment of â6)-α-D-Galp-(1 â 2)-α-D-Glcp-(1 â 3)-α-D-Xylp-(1 â . The hypoglycemic effect of PFC-3 in vitro was evaluated by glucose uptake and consumption assays, and the results showed that PFC-3 concentration-dependently enhanced glucose uptake and significantly improved glucose consumption in insulin-resistant HepG2 cells. Furthermore, PFC-3 significantly reduced fasting blood glucose level, glycosylated hemoglobin level, amylase activity, ameliorate lipid metabolism, and hepatic lesions in streptozotocin-induced diabetic rats. Our research provided insights into the hypoglycemic activities of PFC-3.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cornus
/
Diabetes Mellitus Experimental
Limite:
Animals
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article