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Published on: October 6, 2023
Influence of long-term carbamazepine treatment on thyroid function
1Department of Pediatrics, Cerrahpaşa Faculty of Medicine, Istanbul University, Turkey.
Acta Paediatrica Japonica : Overseas Edition
|June 1, 1993
Summary
Carbamazepine therapy in children with epilepsy can lower thyroid hormone levels (T4, FT4, FT3) without affecting T3 or baseline TSH. Long-term treatment may impact the hypothalamo-pituitary axis.
Area of Science:
- Pediatric Endocrinology
- Neuroendocrinology
- Clinical Pharmacology
Background:
- Epilepsy is a common neurological disorder in children.
- Carbamazepine is a widely used antiepileptic drug.
- Potential effects of carbamazepine on thyroid function require investigation.
Purpose of the Study:
- To investigate the impact of carbamazepine on thyroid function in epileptic children.
- To compare thyroid hormone levels in newly diagnosed, long-term treated, and healthy children.
- To assess changes in thyroid-stimulating hormone (TSH) and other thyroid hormones during carbamazepine therapy.
Main Methods:
- Serum levels of TSH, T3, T4, FT3, and FT4 were measured.
- Study included newly diagnosed epileptic children, long-term treated epileptic children, and healthy controls.
- Hormone levels were assessed before and after 2 and 12 months of carbamazepine treatment.
Main Results:
- No significant differences in thyroid parameters were observed between untreated epileptic children and controls.
- Carbamazepine treatment led to decreased serum T4, FT4, and FT3 levels after 2 and 12 months.
- Serum T3 and baseline TSH levels remained unaffected by carbamazepine therapy.
- TSH response to thyrotropin-releasing hormone stimulation was higher after 12 months of treatment.
Conclusions:
- Carbamazepine therapy in children may alter thyroid hormone levels, potentially due to accelerated hormone metabolism.
- The drug appears to affect the hypothalamo-pituitary axis function.
- Further research is needed to fully elucidate the long-term endocrine consequences of carbamazepine use in pediatric epilepsy.
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