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Article #2121Re: Does HIV kill cells?
From: Thierry Sornasse
Date: Thu, 24 Mar 1994 11:22
Date: Thu, 24 Mar 1994 11:22
39 lines
2828 bytes
2828 bytes
Hi immunetters, I am far to be a specialist in this field but I think that I can tell you my point of view. A single cell infected by HIV seems to resist quite well to the replication and the buding of HIV. But if you mixe together a great number of HIV infected cells you will get syncitia (fusion of two or more than 10 cells) which are not viable. On the other hand, it seems clear now that HIV infection can kill T cells by indirect mechanism. In fact, T cells from infected patients are extremely sensitive to apoptosis ( programed cell death). It seems that the crosslinking of the CD4 expressed on Th cells by the gp120 could be the reason of the potentialisation of T cells to apoptosis. Finally, I am not sure but I think that some cell types of the immune system, like the follicular dendritic cells, are directly destroyed by HIV replication. In conclusion, I could say that HIV pathology is so complex that the question to know if HIV kill directly or indirectly cell is not important by itself. What we know is that HIV kill people and that is important. Bye ///////////////////////////////////////////////////////////////////////// / / T H I E R R Y S O R N A S S E / / Laboratoire de Physiologie Animale / / Universite Libre de Bruxelles / Free University of Brussels / Rue des Chevaux, 67. 1640 Rhode-St-Genese / B E L G I U M / / Phone: 32.2.6509850 Fax: 32.2.6509840 / tsornas@dbmdec5.ulb.ac.be / / //////////////////////////////////////\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 107c0a,1b241de11115c682 X-Google-Attributes: gid107c0a,public X-Google-Thread: 103cc5,1b241de11115c682 X-Google-Attributes: gid103cc5,public X-Google-Thread: f8e22,1b241de11115c682 X-Google-Attributes: gidf8e22,public X-Google-Thread: 11045f,1b241de11115c682 X-Google-Attributes: gid11045f,public X-Google-Thread: ff2c4,1b241de11115c682 X-Google-Attributes: gidff2c4,public X-Google-Thread: 1119a6,1b241de11115c682 X-Google-Attributes: gid1119a6,public X-Google-ArrivalTime: 1994-03-24 03:22:29 PST Path: arc1-ca.pugleaf.net!gmd.de!xlink.net!howland.reston.ans.net!EU.net!ub4b!rc1.vub.ac.be!dbm.ulb.ac.be!tsornas From: tsornas@dec5.ulb.ac.be (Thierry Sornasse) Newsgroups: bionet.general,bionet.cellbiol,bionet.molbio.hiv,bionet.virology,bionet.immunology,sci.bio Subject: Re: Does HIV kill cells? Date: 24 Mar 1994 11:22:29 GMT Organization: Brussels Free Universities VUB/ULB Lines: 40 Sender: tsornas@dec5 (Thierry Sornasse) Distribution: world Message-ID: <2mrt5l$9vv@rc1.vub.ac.be> References: <1994Mar24.085208.16835@leeds.ac.uk> NNTP-Posting-Host: dbmdec5.ulb.ac.be