Neutralizing and complement‐dependent enhancing antibodies in different stages of HIV infection
作者:
Ferenc Tóth,
Béla Szabó,
Eszter Ujhelyi,
Katalin Pálóczi,
Attila Horváth,
George Füst,
Jolán Kiss,
Dénes Bánhegyi,
Susan Hollán,
期刊:
AIDS
(OVID Available online 1991)
卷期:
Volume 5,
issue 3
页码: 263-268
ISSN:0269-9370
年代: 1991
出版商: OVID
关键词: Neutralizing and enhancing HIV antibodies;AIDS;ARC;prognosis;complement receptors;MT-4
数据来源: OVID
摘要:
Reclustering and indirect immunofluorescence assays on MT-4 cells [carrying both CD4 and complement receptor type 2 (CR2)] were used to measure neutralizing and enhancing antibodies in sera obtained from HIV-1-infected individuals. Heat-inactivated sera were tested before and after mixing 1:1 with fresh seronegative human serum. Using heated samples, neutralizing antibodies were found in 20 out of 20 and 11 out of 19 serum samples of asymptomatic and symptomatic [AIDS, AIDS-related complex (ARC)] HIV-seropositive patients, respectively. In complement-restored samples, neutralizing activity was found in eight sera of asymptomatic patients and in none of the sera of AIDS and ARC patients; enhancing activity could be detected in four and 12 sera, respectively. A significant positive correlation was observed between the titres of neutralizing antibodies measured in the complement-restored samples and the absolute number of CD4+ lymphocytes. These findings indicate that the appearance of complement-dependent enhancing antibodies coincident with the loss of neutralizing antibodies may indicate a poor prognosis in HIV infection.
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