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Diabetes and hemochromatosis
T Creighton Mitchell1, Donald A McClain
1Department of Medicine, Division of Endocrinology, University of Utah, 15 North 2030 East, Salt Lake City, UT, 84108, USA.
Current Diabetes Reports
|April 1, 2014
Summary
Hereditary hemochromatosis, an iron overload disorder, often leads to diabetes. Early detection through screening in type 2 diabetes patients can improve outcomes by addressing insulin secretion defects.
Area of Science:
- Genetics and Endocrinology
- Metabolic Disorders
Background:
- Hereditary hemochromatosis is a common autosomal recessive disorder causing excessive iron storage, primarily in Caucasians.
- Clinical presentations are diverse, influenced by HFE genotype, which affects iron overload and disease duration.
- The link between hemochromatosis and diabetes prevalence may be underestimated due to broad ethnic group studies.
Purpose of the Study:
- To investigate the relationship between hereditary hemochromatosis and diabetes.
- To clarify the role of insulin secretion and resistance in diabetes development in hemochromatosis patients.
- To evaluate the potential benefits of early screening and intervention.
Main Methods:
- Analysis of HFE genotype and its impact on iron overload and clinical manifestations.
- Assessment of insulin secretion capacity and insulin resistance in affected individuals.
- Evaluation of the effects of phlebotomy on insulin secretion defects.
Main Results:
- HFE genotype significantly influences disease expression and iron accumulation.
- Loss of insulin secretory capacity appears to be the primary driver of diabetes in this population, with insulin resistance as a secondary factor.
- Phlebotomy can reverse insulin secretion defects if implemented early.
Conclusions:
- Early identification of hereditary hemochromatosis in individuals with type 2 diabetes is crucial.
- Screening select diabetic populations can lead to earlier diagnosis and intervention.
- Timely phlebotomy can ameliorate insulin secretion defects, potentially improving clinical outcomes for hemochromatosis patients with diabetes.
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