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Methamphetamine-induced insulin release
Science (New York, N.Y.)
|October 1, 1971
Summary
Methamphetamine and amphetamine directly stimulate the pancreas to release insulin in rodents, independent of blood sugar levels. This can lead to hypoglycemia, particularly in mice.
Area of Science:
- Pharmacology
- Endocrinology
- Neuroscience
Background:
- Amphetamines are central nervous system stimulants with known effects on metabolic processes.
- Previous research suggests a link between amphetamine administration and altered glucose homeostasis.
Purpose of the Study:
- To investigate the direct effect of methamphetamine and amphetamine on insulin release.
- To determine the impact of these stimulants on plasma insulin levels and glucose homeostasis in rodents.
Main Methods:
- Administration of methamphetamine and amphetamine to rats and mice.
- Measurement of plasma insulin levels using immunoassay.
- Assessment of blood glucose levels to evaluate for hyperglycemia or hypoglycemia.
- In vitro studies using isolated pancreatic cells to assess direct effects.
Main Results:
- Both methamphetamine and amphetamine caused a rapid increase in plasma insulin levels in rats and mice, irrespective of blood glucose.
- Mice consistently developed profound hypoglycemia following insulin release.
- In rats, the hypoglycemic response was variable.
- In vitro experiments confirmed that methamphetamine directly stimulates the pancreas to release insulin.
Conclusions:
- Methamphetamine and amphetamine directly induce insulin secretion from the pancreas.
- The observed insulin release is not a secondary effect of hyperglycemia.
- Rodent models exhibit variable responses to amphetamine-induced insulin release and subsequent hypoglycemia.