Neuropsychological functioning in girls with premature adrenarche
A Tissot1, L D Dorn, D Rotenstein
1Division of Adolescent Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, Ohio 45229-3039, USA. abbigail.tissot@cchmc.org
Insights
Premature adrenarche (PA) in girls may subtly affect brain function, with some tasks showing differences despite no overall group distinctions. Further research is needed to understand these early maturation impacts.
Area of Science:
- Neuroscience
- Endocrinology
- Developmental Psychology
Background:
- Brain development continues through childhood and early adulthood.
- Premature or atypical hormone exposures raise questions about their impact on brain structure and neuropsychological functioning.
Purpose of the Study:
- To investigate whether premature adrenarche (PA) affects cognitive and neuropsychological functioning in young girls.
- To explore potential sex differences in neuropsychological profiles among girls with PA.
Main Methods:
- Study included 40 girls (6-8 years) with PA and 36 typically maturing girls.
- Neuropsychological assessments were administered to evaluate cognitive functions.
- Statistical analyses examined group differences and potential sex dimorphism.
Main Results:
- No significant overall group differences were found in neuropsychological tests.
- Effect size confidence intervals indicated medium differences at the subscale level.
- Typically maturing girls outperformed PA girls in verbal, working memory, and visuospatial tasks; PA girls showed improved attention.
Conclusions:
- Preliminary findings suggest premature adrenarche may influence specific aspects of neuropsychological functioning.
- While overall cognitive differences were not significant, subscale variations warrant further investigation.
- No sexually dimorphic neuropsychological profile was identified in this cohort.
Abstract:
Contemporary research indicates that brain development occurs during childhood and into early adulthood, particularly in certain regions. A critical question is whether premature or atypical hormone exposures impact brain development (e.g., structure) or function (e.g., neuropsychological functioning). The current study enrolled 40 girls (aged 6-8 years) diagnosed with premature adrenarche (PA) and a comparison group of 36 girls with on-time maturation. It was hypothesized that girls with PA would demonstrate lower IQ and performance on several neuropsychological tasks. The potential for a sexually dimorphic neuropsychological profile in PA was also explored. No significant univariate or multivariate group differences emerged for any neuropsychological instrument. However, effect size confidence intervals contained medium-sized group differences at the subscale level. On-time girls performed better on verbal, working memory, and visuospatial tasks. Girls with PA showed improved attention, but not a sexually dimorphic profile. These results, though preliminary, suggest that premature maturation may influence neuropsychological functioning.
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