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Cerebrospinal fluid signs of neuronal damage after antiretroviral treatment interruption in HIV-1 infection.

Artikel i vetenskaplig tidskrift
Författare Magnus Gisslén
Lars Rosengren
Lars Hagberg
Steven G Deeks
Richard W Price
Publicerad i AIDS research and therapy
Volym 2
Sidor 6
ISSN 1742-6405
Publiceringsår 2005
Publicerad vid Institutionen för invärtesmedicin, Avdelningen för infektionssjukdomar
Institutionen för klinisk neurovetenskap
Sidor 6
Språk en
Länkar dx.doi.org/10.1186/1742-6405-2-6
Ämneskategorier Medicin och Hälsovetenskap

Sammanfattning

BACKGROUND: The neurofilament is a major structural component of myelinated axons. Increased cerebrospinal fluid (CSF) concentrations of the light chain of the neurofilament protein (NFL) can serve as a sensitive indicator of central nervous system (CNS) injury. To assess whether interrupting antiretroviral treatment of HIV infection might have a deleterious effect on the CNS, we measured NFL levels in HIV-infected subjects interrupting therapy. We identified subjects who had CSF HIV RNA concentrations below 50 copies/mL at the time combination antiretroviral therapy was interrupted, and for whom CSF samples were available before and after the interruption. RESULTS: A total of 8 subjects were studied. The median (range) CSF NFL level at baseline was <125 (<125-220) ng/L (normal <250 ng/L). All 8 subjects exhibited an increase in CSF and plasma HIV RNA after stopping therapy, accompanied by intrathecal immunoactivation as evidenced by CSF lymphocytic pleocytosis (7/8 patients) and increased CSF neopterin concentration (5/6 patients). Three subjects showed a consistent increase in CSF NFL, rising from <125 ng/L to a maximum of 880 (at day 148), 1,010 (day 58) and 10,930 ng/L (day 101). None exhibited new neurological symptoms or signs, or experienced functional deterioration during the period off treatment; of 5 who underwent brief quantitative neurological testing, none showed worsening performance. CONCLUSION: These findings suggest that resurgence of active HIV replication may result in measurable, albeit subclinical, CNS injury. Further studies are needed to define the frequency and pathobiological importance of the increase in CSF NFL.

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