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Published on: October 12, 2018
Cognitive assessment of school-age children infected with maternally transmitted human immunodeficiency virus type 1
M Tardieu1, M J Mayaux, N Seibel
1Département de Pédiatrie, Unité INSERM U292, Hôpital de Bicêtre, Paris, France.
Insights
Children with vertically acquired human immunodeficiency virus type 1 (HIV-1) infection show better-than-expected school achievement and cognitive abilities. Early CD4+ lymphocyte counts may predict future academic success and cognitive development in these children.
Area of Science:
- Pediatrics
- Infectious Diseases
- Neurodevelopmental Disorders
Background:
- Vertical transmission of human immunodeficiency virus type 1 (HIV-1) can impact child development.
- Early studies suggested significant cognitive and academic challenges for children with HIV-1.
Purpose of the Study:
- To assess school achievement, cognitive abilities, and psychoaffective status in children with vertically acquired HIV-1 infection.
- To identify factors predicting school adaptation and cognitive outcomes in this cohort.
Main Methods:
- Longitudinal study of 33 children born before 1985 with vertically acquired HIV-1, followed to age 6.
- Assessment of school achievement, cognitive skills (IQ, visual-spatial, time orientation), language, fine motor, and emotional adaptation.
- Correlation analysis with CD4+ lymphocyte counts, maternal infection mode, and parental education.
Main Results:
- 67% of children achieved normal school performance by a mean age of 9.5 years.
- While mean IQ was 95, significant deficits were noted in visual-spatial skills (54%) and language (44%).
- Psychoaffective disturbances were present in 29% of children and 42% of parents; normal school performance correlated with cognitive test results and lower psychoaffective symptoms.
Conclusions:
- Children with vertically acquired HIV-1 demonstrate better cognitive abilities and school achievement than previously assumed.
- Circulating CD4+ lymphocyte percentage in early life is a potential predictor of later school adaptation and cognitive function.
- Intervention strategies should consider cognitive and psychoaffective support for children with HIV-1.
Abstract:
Thirty-three children vertically infected with human immunodeficiency virus type 1 (HIV-1), who were born before 1985, were followed in a single center, and had reached the age of 6 years, were studied and tested for school achievement. Of these 33 children, 24 were also tested for cognitive abilities, fine motor and language skills, and emotional adaptation. Of the 33 patients, 22 (67%) had normal school achievement at a mean age of 9.5 +/- 1.6 years. The mean IQ was 95 +/- 11, but 54% of the patients (13/24) had abnormal results on visual-spatial and time orientation tests, 44% had speech and/or language delay or articulation disorders, and 29% of the children and 42% of the parents had psychoaffective disturbances of intermediate or high severity. Normal school performance was positively correlated with results of the different cognitive tests and to a lesser extent with the absence of psychoaffective symptoms, but was independent of the mode of maternal infection or the parents' educational level. Children with normal school achievement had a higher percentage of circulating CD4+ lymphocytes during the course of infection. We conclude that children whose HIV-1 infection is maternally acquired have better cognitive abilities and school achievement than was initially thought, and that the percentage of circulating CD4+ lymphocytes during the first years of life appears to be predictive of future school adaptation or cognitive abilities.
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