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Early antiretroviral therapy: rationale, protease inhibitor-sparing regimens and once daily dosing.

Abstract：

:In 1998 it seems reasonable and widely accepted that all human immunodeficiency virus type 1 (HIV-1)-infected patients willing to be treated may benefit from receiving antiretroviral therapy. Only those with undetectable plasma HIV-1 RNA, normal CD4 lymphocyte counts and lack of markers of immunological system activation may be possible exceptions. The rationale supporting the early initiation of antiretroviral therapy are (i) data on viral dynamics; (ii) preliminary data pointing toward a better and a quicker restoration of immune function when treatment is initiated in very early stages (during or within a few weeks or months of acute symptomatic or asymptomatic HIV-1 infection); (iii) the lack of a stable viral load set-point even in patients in the early stages (CD4 > 500 cells/mm3) who have a very low viral load (< 5000 copies/ml); (iv) the relatively high likelihood of clinical progression at mid-term of the approximately 50-75% of patients in very early disease stages (CD4 > 500 cells/mm3) who have a plasma viral load above 5000 to 10,000 HIV-1 RNA copies/ml; (v) data from the Spanish Earth-1 study, which used a composite endpoint (virological, immunological or clinical progression), demonstrating that even in these very early stages of HIV-1 disease any antiretroviral therapy (double or triple combination) was better than no treatment. Even in early disease stages, a triple combination is needed to achieve a durable and profound virological and immunological response. In addition, the combination of stavudine plus didanosine has several advantages and can be considered one of the best double nucleoside combinations to combine with a protease inhibitor or with a non-nucleoside reverse transcriptase inhibitor. The INCAS study and the preliminary results of the ongoing Spanish SCAN study have demonstrated the possibility of protease inhibitor-sparing combinations for initial antiretroviral treatment, at least in selected patient subsets, such as those with a relatively low baseline viral load. Furthermore, components of these protease inhibitor-sparing combinations such as didanosine or nevirapine are suitable for once daily administration.

journal_name

Antivir Ther

journal_title

Antiviral therapy

authors

Gatell JM

subject

Has Abstract

pub_date

1998-01-01 00:00:00

pages

49-53

eissn

1359-6535

issn

2040-2058

journal_volume

3 Suppl 4

pub_type

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Early antiretroviral therapy: rationale, protease inhibitor-sparing regimens and once daily dosing.