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Abstract Title:

Characterization and anti-diabetic effects of the oligosaccharide fraction isolated from Rosa canina in STZ-Induced diabetic rats.

Abstract Source:

Carbohydr Res. 2020 Mar ;489:107927. Epub 2020 Jan 24. PMID: 32062396

Abstract Author(s):

Mehrali Rahimi, Soraya Sajadimajd, Zahra Mahdian, Marayam Hemmati, Peyman Malekkhatabi, Gholamreza Bahrami, Bahareh Mohammadi, Shahram Miraghaee, Razieh Hatami, Kamran Mansouri, Hamid Reza Moahammadi Motlagh, Samira Keshavarzi, Hossein Derakhshankhah

Article Affiliation:

Mehrali Rahimi

Abstract:

Diabetes mellitus is the most common metabolic disorder characterized by chronic hyperglycemia. There has been a surge of research studies aiming to use natural products in the management of diabetes. The objective of this study was to isolate and characterize the structure and anti-diabetic mechanisms of the main ingredient from Rosa canina. The oligosaccharide was isolated from Rosa canina fruits and characterized by a combination of FTIR, NMR and Mass spectrometry. Wistar rats were divided into negative control, diabetic (type 2), isolated oligosaccharide (IO)-treated diabetic and positive diabetic controls. Oral glucose tolerance, gluconeogenesis andα-glucosidase inhibitory tests as well as immunohistochemistry and quantitative real time-PCR were performed to elucidate the molecular anti-diabetic mechanisms of IO. Structural analyses confirmed the oligosaccharide structure of isolated fraction. Gluconeogenesis and α-glucosidase activity wereinhibited by IO in diabetic rats. The oral glucose tolerance test was improved significantly in the group treated with the IO (P < 0.05). Pancreatic β-cells and tissue pathological examination showed a significant improvement after the treatment period. In addition, the expression of Ngn3, Nkx6.1 and insulin increased in oligosaccharide-treated compared to untreated diabetic rats. Owing to the verified anti-diabetic effectsand regenerative potential, isolated oligosaccharide could be considered as the promising drug in the management of diabetes.

Study Type : Animal Study

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