Aims: This cross-sectional study investigates the effect of antipsychotic (AP)-induced hyperprolactinemia on testosterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH), inhibin B, and puberty in boys with mainly autism spectrum disorders (ASD). Method: One hundred and four physically healthy 10-to 19-year-old boys with ASD or disruptive behavior disorder (DBD) were recruited between October 2006 and November 2009. Fifty-six adolescents had been treated with AP for >16 months; 48 had never been exposed to AP. Morning non-fasting levels of serum prolactin, testosterone, LH, FSH and inhibin B were obtained and Tanner pubertal stage was determined. Patients with hyperprolactinemia (n = 28) were compared to those without hyperprolactinemia (n = 76) using non-parametric or parametric tests, as appropriate. Results: Patients with AP-induced hyperprolactinemia had significantly lower testosterone levels with adjustment for age (p = 0.035) compared to patients without hyperprolactinemia and without AP treatment. The difference was not significant within the AP-treated group, and the level of testosterone was within the reference range compared to age-and gender-matched normative data. There was no between-group difference for LH, FSH, inhibin B or Tanner stages. Conclusion: AP-induced hyperprolactinemia is related to significantly lower testosterone levels in pubertal boys with ASD and DBD.

Adolescents, Antipsychotics, Hyperprolactinemia, Puberty, Testosterone,
Hormone Research in Paediatrics
Department of Clinical Chemistry

Roke, Y, van Harten, P.N, Buitelaar, J.K, Tenback, D.E, de Rijke, Y.B, & Boot, A.M. (2012). Antipsychotic-induced hyperprolactinemia and testosterone levels in boys. Hormone Research in Paediatrics, 77(4), 235–240. doi:10.1159/000337910