Document 0618 DOCN M95A0618 TI Immunologic changes in the first 6 months of life in subjects born to HIV+ women. American Pediatric Society 104th annual meeting and Society for Pediatric Research 63rd annual meeting; 1994 May 2-5; Seattle. DT 9510 AU Kovacs A; Pan L; Chan L; Dept of Peds., LAC+USC Medical Center/USC School of Medicine,; USA. SO Pediatr AIDS HIV Infect. 1994 Oct;5(5):319 (unnumbered abstract). Unique Identifier : AIDSLINE AIDS/95330426 AB OBJECTIVE: To determine age related changes of immunologic parameters in the first 6 months of life in HIV infected (HIV+) and uninfected (HIV-) children born to infected women. METHOD: Immunologic parameters including CD3, CD4, CD8, B and non-T non-B (NK) lymphocytes were prospectively evaluated in 139 children (36 HIV+ and 103 HIV-) born to HIV+ women from 1988 through 1993. Patterns of change with age within each group, between the two groups, and among the parameters were analyzed. The 6 months net changes were calculated based on the measurements at birth. RESULTS: Significant immunologic changes occur in the first 6 months of life. CD4 counts decreased from birth to 3 months, then increased and peak at 6 months for both HIV+ and HIV- infants. However, HIV+ infants consistently had lower mean count after 2 months (P < 0.05) and had a greater net decrease of total CD4 cells during the first 6 months (HIV+: 19.9% HIV-: 1.3%). The greatest decrease in CD4 occurred between 1 and 2 month of life for HIV+ infants (477 CD4 cells mm3/month). No significant differences were found between the two groups in Lymphocyte count, CD8 count, CD3 count, CD3 percent and NK lymphocytes. The mean CD8% was the same for both groups at birth. For HIV+ group CD8% rose sharply at 2 month and leveled off (6 month net increase was 20.7%) while HIV- group had a continuous slight downward trend throughout the 6 months (net decrease was 12.3%). Both B cells and percent of B lymphocytes rose sharply during the first 6 months of life for both groups (B cells: a net increase of 127.8% for infected and 150.7% for the uninfected; percent of B Lymphocytes: 112.2% and 110.2% respectively). CONCLUSION: Significant immunologic changes occur both in HIV+ and HIV- infants in the first 6 months of life. Diagnostic interpretations and therapeutic approaches in caring for HIV+ children during the first 6 month of life must take these changes and differences into consideration. DE Age Factors Antigens, CD3/ANALYSIS CD4 Lymphocyte Count CD8-Positive T-Lymphocytes Female Human HIV Infections/*IMMUNOLOGY *HIV Seropositivity Infant Infant, Newborn Killer Cells, Natural *Lymphocyte Count *Lymphocyte Subsets Pregnancy *Pregnancy Complications, Infectious Prospective Studies MEETING ABSTRACT JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).