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Early antiretroviral treatment reduces viral reservoirs in HIV-infected teens
Date:3/4/2013

A study led by University of Massachusetts Medical School professor and immunologist Katherine Luzuriaga, MD, and Johns Hopkins Children's Center virologist Deborah Persaud, MD, highlights the long-term benefits of early antiretroviral therapy (ART) initiated in infants.

The study, presented on March 4 at the 20th annual Conference on Retroviruses and Opportunistic Infections (CROI) in Atlanta, shows that ART administered in early infancy can help curtail the formation of hard-to-treat viral sanctuaries reservoirs of "sleeper" cells responsible for reigniting infection in most HIV patients within weeks of stopping therapy.

The report describes nine teenagers, five of whom started ART around two months of age. Ultrasensitive testing showed dramatically lower copy numbers of viral DNA in the five teens who received ART within two months of exposure compared to the four teens who started treatment at a later age. In addition, serial testing demonstrated a small decay in the amounts of HIV DNA in the blood of the early-treated children over time. Moreover, using very sensitive techniques, the researchers were not able to recover HIV from the early-treated teens. In contrast, clinical tests detected viral hideouts in the late-treated teens. Four of the five early-treated children showed no HIV-specific antibodies on standard testing, but antibodies were detected in the blood of all four who started treatment late.

In a related report, Dr. Luzuriaga and Dr. Persaud reported on March 3 the case of an infant who underwent remission of HIV infection after receiving ART within 30 hours of birth. Altogether, these findings, the researchers say, can help pave the way toward achieving long-term viral suppression without treatment in children. Long-term viral suppression without treatment is an exceedingly rare phenomenon observed in so-called "elite controllers," HIV-infected patients whose immune systems are able to rein in viral replication
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Contact: Lisa Larson
lisa.larson@umassmed.edu
508-856-2000
University of Massachusetts Medical School
Source:Eurekalert

Page: 1 2

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