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Neurologic complications of HIV infection in children
1Department of Neurology and Pediatrics, Children's National Medical Center, George Washington University, Washington, D.C.
Insights
Children with symptomatic HIV-1 infection often experience early neurologic issues like cognitive and motor deficits. Antiretroviral treatment may temporarily improve brain function in these cases.
Area of Science:
- Pediatric Neurology
- Infectious Diseases
- Neurovirology
Background:
- Symptomatic Human Immunodeficiency Virus type 1 (HIV-1) infection in children frequently presents with neurologic abnormalities.
- These deficits, including cognitive, language, and motor impairments, and acquired microcephaly, can manifest early, even within the first three months of life.
- Early signs may precede detectable immune deficiency or systemic illness.
Purpose of the Study:
- To describe the spectrum and timing of neurologic abnormalities in children with symptomatic HIV-1 infection.
- To explore the potential link between HIV-1 central nervous system (CNS) infection and observed neurodevelopmental deficits.
- To assess the impact of antiretroviral therapy on neurologic functioning in affected children.
Main Methods:
- Observational analysis of neurologic manifestations in children diagnosed with symptomatic HIV-1 infection.
- Clinical assessment of cognitive, language, motor, and head circumference development.
- Review of medical history, including immune status and systemic illness progression.
- Evaluation of response to antiretroviral treatment.
Main Results:
- Frequent occurrence of neurologic abnormalities, including cognitive, language, and motor deficits, and acquired microcephaly.
- Neurologic symptoms can appear within the first three months of life, sometimes preceding immune suppression.
- Hypotonia, delayed head control, and reduced vocalizations are noted early manifestations.
- Central nervous system (CNS) impairment is strongly suspected to be a result of direct HIV-1 brain infection.
- Antiretroviral agents demonstrated potential for temporary improvement in neurologic function in some cases of HIV-1-related encephalopathy.
Conclusions:
- Neurologic abnormalities are a common and early feature of symptomatic pediatric HIV-1 infection.
- The precise mechanisms and timing of CNS invasion by HIV-1 require further investigation.
- While the exact pathogenesis is unknown, HIV-1 brain infection is the likely cause of CNS dysfunction.
- Antiretroviral therapy offers a potential avenue for mitigating neurologic deficits in affected children.
Abstract:
Neurologic abnormalities occur frequently in children with symptomatic HIV-1 infection (class P2) and include cognitive, language and motor deficits, as well as acquired microcephaly. Neurologic abnormalities can be seen as early as the first 3 months of age and can precede signs of immune deficiency and systemic illness. Hypotonia, delayed or poor head control and decreased vocalizations are some of the early neurologic manifestations of HIV-1 infection. In the majority of cases CNS impairment appears to be related to HIV-1 brain infection although at this time the exact timing of CNS invasion by the virus and the pathogenesis of CNS dysfunction are unknown. Treatment with antiretroviral agents can at least temporarily improve neurologic functioning in some children with HIV-1-related encephalopathy.