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- Newsgroups: sci.med.aids
- Path: sparky!uunet!usc!ucla-cs!usenet
- From: Billi Goldberg <bigoldberg@igc.apc.org>
- Subject: Levy's New CD8 Study
- Message-ID: <1992Dec28.224005.21945@cs.ucla.edu>
- Note: Copyright 1992, Dan R. Greening. Non-commercial reproduction allowed.
- Sender: usenet@cs.ucla.edu (Mr Usenet)
- Nntp-Posting-Host: sole.cs.ucla.edu
- Archive-Number: 6682
- Organization: unspecified
- Date: Mon, 28 Dec 92 11:55:02 PST
- Approved: phil@wubios.wustl.edu (J. Philip Miller)
- Lines: 29
-
- Another just published study on the importance of CD8+ cells in the
- control of HIV and AIDS-related pathogens. I wonder if it is possible
- that these individuals who have AIDS and no positive tests for HIV may
- be having the virus surpressed by CD8+ cells. It also makes me wonder
- about the individuals who have claimed that certain unusual treatments
- have cleared the virus.
- ------------------------------------------------------------------------
- Castro BA, Homsy J, Lennette E, Murthy KK, Eichberg JW, Levy J. HIV-1
- Expression in Chimpanzees Can Be Activated by CD8+ Cell Depletion or CMV
- Infection. Clinical Immunology and Immunopathology. 1992; 65(3):
- 227-233.
-
- Abstract: CD8+ cell antivral activity and cytomegalovirus (CMV) were
- investigated in vivo as possible cofactors influencing the outcome of
- HIV-1 infection. The role of CD8+ suppression of HIV replication was
- evaluated by depleting CD8+ cells in two infected chimpanzees by
- inoculation with monoclonal anti-CD8 antibodies. Two other infected
- animals were infected with chimpanzee CMV (CCMV)-infected human
- fibroblasts to determine if exposure to this virus would induce HIV
- replication. Treatment with anti-CD8 antibody resulted in recovery of
- virus from the CD4+ lymphocytes of one animal at 1, 4, and 6 months, and
- from a second animal at 1 month postinoculation. In contrast, virus had
- been recovered only once or not all from these infected chimpanzees for
- 4 years prior to treatment. Similarly, HIV was recovered the CD4+ cells
- of the two animals 2 to 3 months after inoculation of control uninfected
- fibroblasts. These studies suggest that CD8+ cell-mediated suppression
- and the presence of other viruses (such as CMV) could act as cofactors
- in influencing the extent of HIV-1 replication in vivo and, possible,
- progression to disease.
-