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[Effects of angrographolide on plasma glucose level of experiment diabetic rats and its molecular mechanism]
Ping Yang1, Shen-Zhou Chen, Sheng-Jun Xiao
1Department of pharmacology, Guilin Medical College, Guilin 541004, China. yp2805795@163.com
Objective:
To investigate the effects of angrographolide on plasma glucose level of diabetic rats and its molecular mechanism.
Methods:
The diabetic model rats were established by intraperitoneal injection of streptozotocin (65 mg/kg). Diabetic rats were treated with angrographolide for 2 weeks, then the activity of superoxide dismutase (SOD) and the content of malondialdehyde (MDA) in serum were examined and the expressions of Bcl-2 and Box gene of pancreatic cells were detected.
Results:
Compared with model rats, the plasma glucose levels and the serum MDA contents of the angrographolide-treated rats decreased, serum insulin and activity of SOD increased significatantly (P < 0.01). The expression of Bcl-2 was lower in the model group, while the expression was stronger in the treatment group (P < 0.05).
Conclusion:
Angrographolide can inhibit the apoptosis of islet cells and depress plasma glucose level of diabetic rat model. Its mechanism may be associated with the upregulation of the expression of Bcl-2, the increase of the activity of SOD, the decrease of the production of free radicals and lipid eroxidadion.
Insights
Angrographolide significantly reduces blood glucose in diabetic rats by protecting islet cells. This natural compound enhances antioxidant activity and may help manage diabetes through its anti-apoptotic effects.
Area of Science:
- Pharmacology
- Molecular Biology
- Endocrinology
Context:
- Diabetes mellitus is a complex metabolic disorder characterized by hyperglycemia.
- Oxidative stress and islet cell apoptosis play crucial roles in the pathogenesis of diabetes.
- Natural compounds are being explored for their therapeutic potential in managing diabetes.
Purpose:
- To investigate the effects of angrographolide on plasma glucose levels in diabetic rats.
- To elucidate the molecular mechanisms underlying angrographolide's action in diabetes.
- To assess angrographolide's impact on oxidative stress markers and islet cell apoptosis.
Summary:
- Diabetic rats treated with angrographolide showed significantly decreased plasma glucose levels and serum malondialdehyde (MDA) content.
- Treatment with angrographolide led to increased serum insulin levels and superoxide dismutase (SOD) activity.
- The expression of the anti-apoptotic gene Bcl-2 was upregulated in pancreatic cells of angrographolide-treated rats.
Impact:
- Angrographolide demonstrates potential as a therapeutic agent for diabetes by inhibiting islet cell apoptosis.
- The study suggests angrographolide's mechanism involves upregulating Bcl-2 expression and enhancing antioxidant defense.
- These findings contribute to understanding natural product-based strategies for diabetes management.
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