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  • Title: Serum steroid hormones and pituitary function in female epileptic patients during carbamazepine therapy.
    Author: Isojärvi JI.
    Journal: Epilepsia; 1990; 31(4):438-45. PubMed ID: 2142450.
    Abstract:
    Ten regularly menstruating women with epilepsy were studied in a 12-month prospective follow-up study to evaluate the short-term effects of carbamazepine (CBZ) on serum sex hormone balance and pituitary function. Thirteen female epilepsy patients receiving long-term CBZ monotherapy (mean medication duration 5.3 years) were also studied. Controls were 17 regularly menstruating healthy volunteers. Untreated patients had higher free testosterone (FT) and luteinizing hormone (LH) serum concentrations than control subjects, whereas the other parameters did not differ between these two groups. However, serum sex hormone binding globulin (SHBG) levels increased and dehydroepiandrosterone sulfate (DHEAS) levels decreased during CBZ treatment. Although calculated free androgen index (FAI) decreased during CBZ therapy, the directly measured FT levels remained unaltered. These changes were found after 2 months and continued after 12 months of CBZ treatment. Moreover, patients with long-term CBZ also had high SHBG levels, low serum DHEAS levels, and low FAI values. Basal LH serum levels decreased during the first year of CBZ treatment and luteinizing hormone-releasing hormone (LH-RH)-stimulated LH concentrations were lower after 2 months of CBZ treatment. Although the serum basal follicle-stimulating hormone (FSH) and prolactin (PRL) levels were unaffected during the first year of CBZ therapy, the LH-RH-stimulated FSH concentrations and metoclopramide (MC)-stimulated PRL concentrations were lower after 12 months of CBZ treatment than before CBZ. Both basal and stimulated gonadotropin and PRL serum levels of long-term CBZ patients were unaffected. No changes were found in estradiol (E2), testosterone (T), or cortisol (C) serum concentrations during short or long-term CBZ treatment.(ABSTRACT TRUNCATED AT 250 WORDS)
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