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A Method for Mouse Pancreatic Islet Isolation and Intracellular cAMP Determination
Published on: June 25, 2014
CART is a novel islet regulatory peptide
1Department of Experimental Medical Science, Division of Diabetes, Metabolism, and Endocrinology, Lund University, Lund, Sweden. nils.wierup@med.lu.se
Peptides
|July 18, 2006
Summary
Cocaine- and amphetamine-regulated transcript (CART) peptides are key islet regulators involved in type 2 diabetes. CART
Area of Science:
- Endocrinology
- Neuroscience
- Metabolic Research
Background:
- Cocaine- and amphetamine-regulated transcript (CART) peptides are expressed in pancreatic islets and associated nerves.
- Islet CART expression varies by species, cell type, and developmental stage.
- CART's role in islet function and diabetes pathophysiology is under investigation.
Purpose of the Study:
- To investigate the role of CART peptides in islet regulation.
- To examine CART expression patterns in different species and during development.
- To explore CART's involvement in type 2 diabetes.
Main Methods:
- Analysis of CART peptide expression in rat and mouse islets during development and in adult models.
- Investigation of CART's effects on glucose-stimulated insulin secretion.
- Examination of human pancreatic nerves and islet tumors for CART expression.
- Assessment of islet function in CART-deficient mice and humans with CART gene mutations.
Main Results:
- CART expression is dynamic during islet development, with species-specific patterns.
- In adult rats, CART is primarily in delta-cells; in adult mice, mainly in nerve fibers.
- CART expression is upregulated in beta-cells during type 2 diabetes development in rats.
- CART influences insulin secretion and islet function; CART deficiency or mutation is linked to diabetes.
Conclusions:
- CART peptides play a significant role in normal islet function.
- Altered CART expression and function are implicated in the pathophysiology of type 2 diabetes.
- CART represents a potential therapeutic target for diabetes management.
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