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Isolated Pancreatic Islet Treatment and Apoptosis Measurement
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5,7-dihydroxy-3,4,6-trimethoxyflavone attenuates ischemic damage and apoptosis in mouse islets
1Department of Internal Medicine, Ulsan University College of Medicine, Gangneung Asan Hospital, South Korea.
Transplantation Proceedings
|June 4, 2015
Summary
Preoperative eupatilin treatment improves pancreatic islet function and reduces apoptosis before transplantation. This antioxidant and anti-inflammatory approach enhances insulin secretion and protects islets from cytokine-induced damage.
Area of Science:
- Immunology
- Endocrinology
- Pharmacology
Background:
- Pancreatic islet transplantation is a key therapy for diabetes.
- Eupatilin, a flavone from Artemisia species, exhibits antioxidant and anti-inflammatory properties.
- This study investigates eupatilin's potential to protect islets from damage before transplantation.
Purpose of the Study:
- To evaluate the efficacy of preoperative eupatilin treatment in preserving islet viability and function.
- To determine eupatilin's role in mitigating ischemic damage and apoptosis in transplanted islets.
- To assess the impact of eupatilin on cytokine-induced inflammatory responses in islets.
Main Methods:
- Islets were cultured with or without eupatilin.
- In vitro islet viability and function were assessed.
- Islets were exposed to a cytokine cocktail (TNF-α, INF-γ, IL-1β) to induce damage.
- Insulin secretion, apoptosis markers, glutathione (GSH), and nitric oxide (NO) levels were measured.
Main Results:
- Eupatilin treatment significantly increased glucose-induced insulin secretion (1.4-fold).
- Pretreated islets showed improved insulin release and content after cytokine exposure.
- Apoptosis was significantly reduced, and GSH levels were elevated in eupatilin-treated islets.
- Eupatilin pretreatment decreased NO, iNOS, and caspase-3 levels post-cytokine challenge.
Conclusions:
- Preoperative eupatilin administration enhances islet function and viability.
- Eupatilin attenuates cytokine-induced islet damage by reducing NO production and apoptosis.
- Eupatilin shows promise as a protective agent for islet transplantation in diabetes treatment.
