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  • Title: Impaired cognitive function in women with congenital adrenal hyperplasia.
    Author: Johannsen TH, Ripa CP, Reinisch JM, Schwartz M, Mortensen EL, Main KM.
    Journal: J Clin Endocrinol Metab; 2006 Apr; 91(4):1376-81. PubMed ID: 16449336.
    Abstract:
    CONTEXT: Congenital adrenal hyperplasia (CAH) is a disorder with a wide spectrum of severity. OBJECTIVE: The objective of this study was to investigate cognitive function in CAH women. DESIGN: This was a case-control study. SETTING: This study was conducted at a tertiary center for pediatric endocrinology at the University Hospital of Copenhagen. PARTICIPANTS: Thirty-five Danish CAH women (age 17-51 yr) were included, and participation rate was 84%. Control women were recruited through the Danish Civil Registration System and matched on age and education. MAIN OUTCOME MEASURES: An abbreviated form of the Wechsler Adult Intelligence Scale was used, i.e. full-scale intelligence quotient (IQ; five of 11 subtests), which included three of six verbal IQ subtests and two of five performance IQ subtests. RESULTS: A significantly lower IQ was found in CAH patients compared with controls with respect to mean full-scale IQ (84.5 vs. 99.1; P < 0.001), mean verbal IQ (86.6 vs. 97.3; P < 0.001), and mean performance IQ (85.7 vs. 101.3; P < 0.001). The salt-wasting CAH group had lower IQ scores than the simple-virilizing CAH group, which reached significance for mean total IQ (81.2 vs. 92.8, P = 0.04) and mean verbal IQ (84.7 vs. 95.5, P = 0.05), and additionally, lower scores than the late-onset CAH group, which reached significance for performance IQ (mean 81.5 vs. 96.2, P = 0.02). CONCLUSIONS: Impaired cognitive function was observed in patients with CAH, especially in salt-wasting CAH. These intriguing findings may reflect adverse effects of hyponatremic episodes, suboptimal postnatal hormone replacement therapy or prenatal adrenal androgen excess, and the potential psychosocial consequences of the disorder.
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