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Alterations in circulating thyroid hormones and thyroxine binding globulin in chronic alcoholism
Clinical Endocrinology
|February 1, 1981
Summary
Chronic alcohol consumption in patients with minimal liver damage significantly reduces total serum thyroxine (T4) and thyroxine-binding globulin (TBG). Levels normalize upon alcohol withdrawal, suggesting ethanol-induced liver dysfunction impacts TBG.
Area of Science:
- Endocrinology
- Hepatology
- Toxicology
Background:
- Chronic alcohol consumption can affect various physiological systems.
- Thyroid hormone levels and their binding proteins are crucial for metabolic regulation.
- Liver function is closely linked to the synthesis of thyroid hormone-binding proteins.
Purpose of the Study:
- To investigate the impact of chronic alcohol consumption on thyroid function in patients with minimal liver damage.
- To assess the relationship between alcohol intake, thyroxine-binding globulin (TBG), and total serum thyroxine (T4).
- To evaluate changes in thyroid function parameters during alcohol withdrawal.
Main Methods:
- Study included eighteen chronic alcoholic patients with minimal liver damage.
- Measured total serum T4 and circulating TBG levels.
- Monitored thyroid function during alcohol withdrawal.
Main Results:
- A significant reduction in total serum T4 was observed.
- Circulating TBG levels were also significantly decreased in these patients.
- Following alcohol withdrawal, T4 and TBG levels rapidly increased to the normal range.
Conclusions:
- Ethanol consumption may impair the liver's synthesis or secretion of TBG.
- Thyroid function tests in chronic alcoholics require cautious interpretation.
- Alcohol-induced liver dysfunction is a potential cause for altered thyroid hormone binding protein levels.