[Study on reverse transcriptase inhibiting antibody in plasma of HIV-1 seropositive subjects].
Reverse transcriptase (RT) inhibiting antibody in a series of plasma of HIV-1-seropositive subjects was quantitatively measured by poly A-linked colorimetric microtiter plate assay. The plasma were obtained from 6 asymptomatic carrier (AC)s and from 3 patients who progressed to AIDS. They had been followed 29-51 months. RT inhibiting antibody levels in the plasma were measured by inhibition assay against HTLV-IIIB RT activity. In five of the 6 AC cases, RT inhibiting antibodies in the serial plasma maintained high levels, and 50% inhibiting titers of the serial plasma did not decrease throughout the observation periods (45-51 months). HIV isolation from peripheral blood mononuclear cell (PBMC) of these 5 ACs did not succeed, and HIV p24 antigens were not detected in the plasma. In one AC case (046) RT inhibiting antibody levels gradually decreased after 48 months. In this case, HIV p24 antigen was not detected in the serial plasma throughout the observation period (48 months), but HIV was isolated from PBMC after 27 months. On the other hand, RT inhibiting antibody levels in the serial plasma of all 3 patients who progressed to AIDS gradually decreased in observation periods (29-35 months). HIV strains were isolated from these 3 cases. These results suggest that reduction of RT inhibiting antibody levels correlate well with the success of HIV isolation and with progression of clinical manifestation.
Saito
T
T
Department of Virology, Kanagawa Prefectural Public Health Laboratories.
Suzuki
K
K
Ito
A
A
Hayashi
T
T
Watanabe
S
S
Kondo
M
M
Imai
M
M
D015492:AIDS Serodiagnosis; D000163:Acquired Immunodeficiency Syndrome / Q000201:enzymology* / Q000635:transmission; D000906:Antibodies / Q000097:blood*; D015415:Biomarkers / Q000097:blood; D003124:Colorimetry; D018450:Disease Progression; D005500:Follow-Up Studies; D006679:HIV Seropositivity / Q000201:enzymology* / Q000635:transmission; D015497:HIV-1 / Q000302:isolation & purification; D006801:Humans; D018894:Reverse Transcriptase Inhibitors / Q000276:immunology*; D013997:Time Factors
D000906:Antibodies; D015415:Biomarkers; D018894:Reverse Transcriptase Inhibitors