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Abstract Title:

Naringin (4',5,7-Trihydroxyflavanone 7-Rhamnoglucoside) Attenuatesβ-Cell Dysfunction in Diabetic Rats through Upregulation of PDX-1.

Abstract Source:

Cells Tissues Organs. 2018 ;206(3):133-143. Epub 2019 Mar 18. PMID: 30884485

Abstract Author(s):

Manickam Subramanian, Balaji Thotakura, Swathi Priyadarshini Chandra Sekaran, Ashok Kumar Jyothi, Indumathi Sundaramurthi

Article Affiliation:

Manickam Subramanian

Abstract:

BACKGROUND: Pancreatic duodenal homeobox-1 (PDX-1) is a key transcription factor which regulates Insulin gene expression and insulin secretion in adultβ-cells and helps to maintain β-cells mass. Naringin, a flavanone, owing to its anti-oxidant property, is reported to have antidiabetic effects.

OBJECTIVES: The present study tries to evaluate the role of naringin on theβ-cell-specific transcription factor PDX-1 in diabetic rats.

METHODS: Diabetes was induced in male rats using streptozotocin and treated with naringin (100 mg/kg) orally for 4 and 8 weeks. Serum insulin level, Pdx-1 and Insulin gene expression, and PDX-1 protein expression were assessed in the rat pancreas. Histopathological and ultrastructural changes in the islet andβ-cells were observed.

RESULTS: Naringin prevented leukocytic infiltration in the pancreas of diabetic rats and recouped theβ-cells with adequate secretory granules. Naringin-treated diabetic rats showed significantly increased mRNA expression of Pdx-1 and Insulin genes, increased expression of transcription factor PDX-1, and higher serum insulin levels than the diabetic control animals. These changes were more pronounced in the 8-week naringin-treated diabetic animals.

CONCLUSIONS: Naringin was found to be an effective antidiabetic agent which increased Insulin gene expression and insulin secretion by upregulating the PDX-1 gene and protein expression.

Study Type : Animal Study

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