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Salvage therapy with abacavir and other reverse transcriptase inhibitors for human immunodeficiency-associated

Jesús Saavedra-Lozano1, José T Ramos, Francisco Sanz

  • 1UT Southwestern Medical Center, Dallas, TX, USA. jsaavedra.hflr@salud.madrid.org

The Pediatric Infectious Disease Journal
|November 30, 2006
PubMed

Insights

High-dose abacavir (ABC) combined with other antiretroviral (ARV) agents is safe and effective for treating HIV-associated encephalopathy (HIV-AE) in children, improving virologic, immunologic, and neuropsychological outcomes.

Area of Science:

  • Pediatric Neurology
  • Infectious Diseases
  • Pharmacology

Background:

  • HIV-associated encephalopathy (HIV-AE) is a severe neurological condition in children with Human Immunodeficiency Virus (HIV).
  • The efficacy of antiretroviral (ARV) agents with good cerebrospinal fluid (CSF) penetration for HIV-AE is not well-defined.
  • Abacavir (ABC) demonstrates good CSF penetration and has shown promise in adults with HIV dementia.

Purpose of the Study:

  • To evaluate the safety and efficacy of an ARV regimen including high-dose abacavir (ABC) in children diagnosed with HIV-AE.
  • To assess virologic, immunologic, and neuropsychological responses to the high-dose ABC regimen.

Main Methods:

  • The study enrolled abacavir-naive children aged 3 months to 18 years with HIV-AE and virologic failure.
  • Participants received a high-dose abacavir-containing ARV regimen.
  • Safety, virologic load, CD4 counts, and neuropsychological function were assessed over 48 weeks.

Main Results:

  • 14 out of 17 enrolled children completed 48 weeks of therapy with good overall tolerability.
  • Significant reductions in HIV RNA levels were observed in both plasma and CSF.
  • Mean increases in CD4 cell count and CD4% were noted, along with reduced soluble tumor necrosis factor receptor II concentrations.
  • Children under 6 years old showed significant neuropsychological improvement.

Conclusions:

  • Highly active antiretroviral therapy (HAART) including high-dose abacavir (ABC) is safe and effective in children with HIV-AE.
  • The regimen demonstrated significant clinical, immunologic, and virologic benefits at 48 weeks.
  • Younger children (under 6 years) experienced notable neuropsychological improvements, highlighting the regimen's impact on cognitive function.
Abstract

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