Journal
GENES
Volume 13, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/genes13091625
Keywords
diabetes; pancreas development; beta-cell regeneration; transcription factors; transdifferentiation
Categories
Funding
- Research Sector Project Unit (RSPU) projects [GS03/01, GS01/02]
- College of Graduate Studies, Kuwait University
- Research Sector, Kuwait University
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Studies have shown that garlic extract (GE) can affect the expression of three genes (Ngn3, Pdx1, and MafA) in the pancreas and liver of diabetic rats. However, the effect of GE on the gene expression varied depending on the duration of treatment, with an initial increase followed by a decrease in expression. In addition, only Pdx1 expression increased significantly in the liver.
Studies in animal diabetic models have demonstrated the possibility of islet regeneration through treatment with natural extracts, such as Allium sativum (garlic). This study aimed to investigate the effect of garlic extract (GE) on the expression of three genes (Ngn3, Pdx1, and MafA) in the pancreas and liver of diabetic rats. Thirty-two rats were divided into two groups, streptozotocin (STZ)-induced diabetic rats (n = 16) and healthy rats (n = 16). Both groups were subdivided into GE-treated (n = 8), and those administered 0.9% normal saline (NS) (n = 8) for 1 week (n = 4) and 8 weeks (n = 4). In the pancreas of diabetic rats treated with GE for 1 week, all three genes, Ngn3, Pdx1, and MafA, were significantly upregulated (p <= 0.01, p <= 0.05, and p <= 0.001, respectively) when compared to diabetic rats treated with NS only. However, after eight weeks of GE treatment, the expression of all three genes decreased as blood insulin increased. In the liver, only Pdx1 expression significantly (p <= 0.05) increased after 8 weeks. The significant expression of Ngn3, Pdx1, and MafA in the pancreas by week 1 may have induced the maturation of juvenile beta-cells, which escaped the effects of STZ and caused an increase in serum insulin.
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