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1996-02-26
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Document 0232
DOCN M9620232
TI Passive immunotherapy for retroviral disease: influence of major
histocompatibility complex type and T-cell responsiveness.
DT 9602
AU Hasenkrug KJ; Brooks DM; Chesebro B; Laboratory of Persistent Viral
Diseases, Rocky Mountain; Laboratories, National Institute of Allergy
and Infectious; Diseases, National Institutes of Helath, Hamilton, MT
59840, USA.
SO Proc Natl Acad Sci U S A. 1995 Nov 7;92(23):10492-5. Unique Identifier :
AIDSLINE MED/96068641
AB Administration of virus-specific antibodies is known to be an effective
early treatment for some viral infections. Such immunotherapy probably
acts by antibody-mediated neutralization of viral infectivity and is
often thought to function independently of T-cell-mediated immune
responses. In the present experiments, we studied passive antibody
therapy using Friend murine leukemia virus complex as a model for an
immunosuppressive retroviral disease in adult mice. The results showed
that antibody therapy could induce recovery from a well-established
retroviral infection. However, the success of therapy was dependent on
the presence of both CD4+ and CD8+ T lymphocytes. Thus, cell-mediated
responses were required for recovery from infection even in the presence
of therapeutic levels of antibody. The major histocompatibility type of
the mice was also an important factor determining the relative success
of antibody therapy in this system, but it was less critical for
low-dose than for high-dose infections. Our results imply that limited
T-cell responsiveness as dictated by major histocompatibility genes
and/or stage of disease may have contributed to previous immunotherapy
failures in AIDS patients. Possible strategies to improve the efficacy
of future therapies are discussed.
DE Acquired Immunodeficiency Syndrome/THERAPY Animal CD4-Positive
T-Lymphocytes/IMMUNOLOGY CD8-Positive T-Lymphocytes/IMMUNOLOGY Female
*Friend Virus *Immunotherapy, Adoptive Lymphocyte Depletion *Major
Histocompatibility Complex Mice Retroviridae Infections/*THERAPY
Survival Analysis T-Lymphocytes/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).