Abstract:
:Infection with the human cytomegalovirus (HCMV) accelerates disease progression in human immunodeficiency virus 1 (HIV-1)-infected individuals. This has been attributed to the transaction of HIV-1 gene expression by HCMV gene products. For transactivation to be effective in vivo both viruses must be present in the same cell. We therefore examined blood samples from 13 HIV-1-infected patients with HCMV viremia for coinfection of individual leukocytes. In four of the patients lymph nodes were also examined. Multiple samples contained defined numbers (between 10 and 1000) of CD4+ lymphocytes or CD14+ monocytes were sorted by a FACS-based automated cell deposition unit. Samples were then analysed by a multiplex nested polymerase chain reaction, which can detect simultaneously HCMV and HIV DNA. The percentage of infected cells was calculated for each virus using the Poisson distribution. Between 0.43% and 6.2% of the CD4+ lymphocytes were infected with HIV and less than 0.15% with HCMV. The level of infection in CD14+ monocytes was always < or = 0.11% for HIV and ranged between < 0.05% and 0.58% for HCMV. Only seven of 1030 sorted samples from blood were positive for both viruses. In lymphnodes, none of the 144 samples tested were double-positive. This clearly shows that coinfection of individual human leukocytes with HIV and HCMV is a very rare event in vivo. Therefore, direct transactivation of HIV by HCMV in coinfected cells obtained from blood and lymphnodes may not explain the effect of HCMV on the prognosis of HIV-infected individuals.
journal_name
J Med Viroljournal_title
Journal of medical virologyauthors
Bertram S,Hufert FT,van Lunzen J,von Laer Ddoi
10.1002/(SICI)1096-9071(199608)49:4<283::AID-JMV5>subject
Has Abstractpub_date
1996-08-01 00:00:00pages
283-8issue
4eissn
0146-6615issn
1096-9071pii
10.1002/(SICI)1096-9071(199608)49:4<283::AID-JMV5>journal_volume
49pub_type
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