Document Detail

Changes in CD4 lymphocyte counts after interruption of therapy in patients with viral failure on protease inhibitor-containing regimens. Royal Free Centre for HIV Medicine.
MedLine Citation:
PMID:  10985307     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To describe the short-term changes in CD4 lymphocyte counts after the interruption of antiretroviral HIV therapy in order to increase the understanding of CD4 lymphocyte dynamics, and so that appropriate monitoring strategies can be designed. METHODS: We studied 35 HIV-infected patients with late-stage disease who had therapy interruptions leading to high viral load levels, median greater than 750 000 RNA log10 copies/ml, and in whom two CD4 cell counts (median 28 days apart) were available before beginning a salvage regimen. RESULTS: Overall, there was a substantial decline in CD4 cell counts from a median of 125 to 83 cells/mm3 in the average 28 day period, with median proportionate and absolute losses of 26% and 24 cells/mm3 per month, respectively (P < 0.008). This tended to be greater in individuals studied sooner after interrupting therapy (P = 0.03) and in those with CD4 cell counts above the pre-therapy baseline (P = 0.06). There was a strong negative correlation between the proportionate increase in viral load and the absolute change in CD4 cell count (-0.66, P = 0.0002). CONCLUSION: Patients with relatively advanced HIV infection interrupting antiretroviral therapy after failing a protease inhibitor-containing regimen require frequent monitoring because CD4 cell counts appear to fall quite rapidly, at least in the first few weeks after interruption.
M Youle; G Janossy; W Turnbull; R Tilling; C Loveday; A Mocroft; M Tyrer; S Madge; D Wilson; A Dykhoff; M Johnson; A N Phillips
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  AIDS (London, England)     Volume:  14     ISSN:  0269-9370     ISO Abbreviation:  AIDS     Publication Date:  2000 Aug 
Date Detail:
Created Date:  2000-12-13     Completed Date:  2001-09-27     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8710219     Medline TA:  AIDS     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1717-20     Citation Subset:  IM; X    
Department of Primary Care and Population Sciences, Royal Free and University College Medical School, London, UK.
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MeSH Terms
Anti-HIV Agents / therapeutic use*
CD4 Lymphocyte Count*
HIV / drug effects,  physiology*
HIV Infections / drug therapy*,  immunology,  virology
HIV Protease Inhibitors / therapeutic use*
RNA, Viral / blood
Time Factors
Viral Load
Reg. No./Substance:
0/Anti-HIV Agents; 0/HIV Protease Inhibitors; 0/RNA, Viral

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