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Trace element metabolism in the chemically diabetic rat
1Department of Biochemistry and Nutrition, Virginia Polytechnic Institute and State University, 24061, Blacksburg, Virginia.
Biological Trace Element Research
|November 23, 2013
Summary
Hormones like insulin and glucagon significantly impact essential trace metal metabolism, including zinc, copper, manganese, and iron. Hormonal shifts are vital for adapting to physiological stress and may contribute to complications in endocrine disorders.
Area of Science:
- Biochemistry
- Endocrinology
- Trace Metal Metabolism
Background:
- Essential trace metal metabolism is homeostatically controlled.
- Factors coordinating trace metal absorption, excretion, and tissue flux are largely unknown.
Purpose of the Study:
- To investigate the influence of insulin and glucagon on trace metal metabolism.
- To explore the role of hormonal balance in trace metal homeostasis and adaptation to stress.
Main Methods:
- Utilized the streptozotocin-diabetic rat model.
- Analyzed the metabolism of zinc (Zn), copper (Cu), manganese (Mn), and iron (Fe).
Main Results:
- Plasma insulin and glucagon levels markedly influence Zn, Cu, Mn, and Fe metabolism.
- Altered trace metal metabolism during acute stress (high glucagon-to-insulin ratio) is crucial for biochemical adaptation.
- Changes in trace metal tissue distribution during chronic endocrine imbalance may contribute to secondary complications.
Conclusions:
- Hormonal regulation by insulin and glucagon is a key factor in essential trace metal metabolism.
- Trace metal metabolic adjustments are necessary for adapting to physiological stress.
- Dysregulation of trace metals in endocrine disorders may underlie disease progression.
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