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CD4 cell

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CD4 cell

The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

CD4 cell

CD4+ lymphocyte A circulating T cell with a 'helper' phenotype; in AIDS Pts, the levels of CD4+ cells is a crude indicator of immune status and susceptibility to certain AIDS-related conditions; these Pts may suffer KS as CD4+ cells fall below 0.3 x 109/L–US: 300/mm3, NHL < 0.15 x 109/L–US: 150/mm3, Pneumocystis carinii < 0.1 x 109/L–US: 100/mm3, MAC < 0.05 x 109/L–US: 50/mm3. See CD4 count, Kaposi sarcoma.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
(5) Clinical manifestation of infection with Cryptococcus neoformans in AIDS patients is generally more evident at CD4 cells [greater than or equal to]50 cells/[micro]l.
In addition to the financial implications to patients in developing countries, it is important to consider the impact of starting patients on therapy in the absence of CD4 cell count and viral load monitoring.
Also, they recorded a higher parasitaemia compared to those with CD4 higher than 200 cells/[micro]l, this possibly could be due to the fact that the CD4 cells which play a central role in the immune defence against many pathogens have been depleted by the HIV virus.
CD4 cell count as a surrogate end point in HIV clinical trial, a meta analysis of studies of the AIDS clinical trials group.
The meta-analysis of the findings of all 11 studies showed that antiretroviral therapy was strongly associated with a reduction in the incidence of TB, regardless of CD4 cell count (HR=0.35; 95% CI 0.28 -0.44; p < 0.001).
"Of the CIN-2+ cases, 2 were CIN-3 (an HIV-infected woman with a baseline CD4 cell count of 350-499 cells/uL, and an HIV-uninfected woman).
Adjusted Hazard Ratios for Hepatic Failure Hepatitis B or C virus infection 5.3 Recent CD4 cell count of 200 cells/mcL or fewer 2.5 Diabetes 1.9 HIV RNA viremia level of at least 500 copies/mL 1.7 History of alcohol or drug abuse 1.6 Nadir CD4 cell count of 200 cells/mcL or fewer 1.5 Notes: Based on data for 20,277 adults with HIV and 202,313 controls.
The nagalase levels in these patients rose to within the range for healthy controls, and the volunteers maintained their CD4 cell counts above 500 cells/[mm.sup.3] during 7 years of follow-up.
Early treatment of asymptomatic individuals is favorable when there is a rapid decline in CD4 cell count (such as more than 100/mcL per year); plasma HIV-1 RNA level is greater than 100,000 copies/mL; and in the presence of active hepatitis B or C, HIV-associated nephropathy, or cardiovascular disease risk factors.
Expenditures totaled $13,885 for individuals at the earliest stage of disease but rose steadily across declining strata of CD4 cell counts, reaching $36,532 for those with the most advanced disease.
Blood tests showed a CD4 cell count of 6 x [10.sup.6]/L and HIV viral load of 272,000 (log 5.4) copies/mL.
"Interruption appears to be safe as long as the CD4 cell count does not fall below 200-250 cells [per [mm.sup.3]]," said Dr.
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