Antibody against human immunodeficiency virus type 1 (HIV-1) Tat protein may have influenced the progression of AIDS in HIV-1-infected hemophiliac patients

Maria Carla Re, Giuliano Furlini, Monica Vignoli, Eric Ramazzotti, Giorgio Zauli, M. L A Placa

Research output: Contribution to journalArticle


Retrospective analysis of serum samples from a group of hemophiliac patients who became infected with human immunodeficiency virus type 1 (HIV-1) between 1984 and 1985 has shown that, at variance with other HIV-1-infected patients, at the onset, or at least at a very early phase of HIV-1 infection, they constantly have elevated levels of antibodies against HIV-1-transactivating Tat protein and an absent or barely detectable p24 antigenemia. Anti-Tat antibodies in initial serum samples from hemophiliac patients were probably the consequence of the passive administration of immunoglobulins present in low- or intermediate-purity clotting factor concentrates prepared from HIV-1 infected blood. Furthermore, the analysis of serial serum samples obtained during the course of the disease, in which passively acquired anti-Tat antibodies were substituted by actively produced antibodies, demonstrated an inverse relationship between anti-Tat antibody and p24 antigenemia levels throughout the observation period. These data seem to suggest that anti-Tat antibody may have some influence on the course of HIV-1 infection.

Original languageEnglish
Pages (from-to)230-232
Number of pages3
JournalClinical and Diagnostic Laboratory Immunology
Issue number2
Publication statusPublished - 1996


ASJC Scopus subject areas

  • Clinical Biochemistry
  • Immunology
  • Immunology and Allergy
  • Microbiology (medical)

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