Document 2824 DOCN M94A2824 TI Passive immunotherapy (PIT) in HIV disease: study of patients and donors. DT 9412 AU Bainbridge D; Karpas A; Dept Immunology, Royal London Hospital, UK. SO Int Conf AIDS. 1994 Aug 7-12;10(1):216 (abstract no. PB0293). Unique Identifier : AIDSLINE ICA10/94369751 AB OBJECTIVE: To determine the effects of PIT on patients and donors. METHODS: Plasma was collected from healthy HIV+ individuals with a CD4+ T-cell count of > 450 mm3. Patients with AIDS received 500 ml, those with ARC 250 ml and those with pre-AIDS 150 ml at monthly transfusions. Both donors and patients were monitored for anti-HIV antibodies and lymphocyte counts. RESULTS: Plasma transfusion resulted in a sustained clearance of HIV-1 viraemia; clinical improvement in AIDS; remission in ARC and delay of the onset of the disease in pre-AIDS patients. Regular plasmapheresis led to an increase in CD4+ T-cell counts in many donors whilst their levels of anti-HIV-1 antibodies remained stable or increased. DISCUSSION AND CONCLUSION: PIT is a non-toxic and safe procedure which seems to benefit patients with HIV disease. It appears that, in the earlier stages of the disease (ARC and pre-AIDS), the benefit is of longer term. Therefore PIT should start early in the disease. Most interesting was the observation that plasmapheresis appears to improve the CD4+ T-cell counts of the donors. Hence it would not be unreasonable to suggest that plasma donation might also delay the progression of the disease. DE Acquired Immunodeficiency Syndrome/THERAPY AIDS-Related Complex/THERAPY *Blood Transfusion Human HIV Antibodies/BLOOD HIV Antigens/BLOOD HIV Infections/BLOOD/*THERAPY HIV-1/IMMUNOLOGY/ISOLATION & PURIF *Immunization, Passive Leukocyte Count *Plasmapheresis Treatment Outcome T4 Lymphocytes Viremia/THERAPY MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).