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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Curr+Opin+HIV+AIDS
2014 ; 9
(6
): 559-64
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Neuropathogenesis of HIV-associated neurocognitive disorders: roles for immune
activation, HIV blipping and viral tropism
#MMPMID25203638
Chen MF
; Gill AJ
; Kolson DL
Curr Opin HIV AIDS
2014[Nov]; 9
(6
): 559-64
PMID25203638
show ga
PURPOSE OF REVIEW: The purpose of this study is to discuss why HIV-associated
neurocognitive disorders (HAND) persist despite apparently effective HIV
suppression by highly active antiretroviral therapy (ART). RECENT FINDINGS: As
many as 50% of HIV-infected individuals suffer from HAND despite ART suppression
of HIV replication to apparently undetectable levels in most treated individuals.
Prior to ART, HIV-associated dementia (HAD), the severest form of HAND, affected
nearly 20% of infected individuals; HAD now affects only nearly 2% of ART-treated
persons, although less severe HAND forms persist. Recent studies link persistent
immune activation, inflammation and viral escape/blipping in ART-treated
individuals, as well as comorbid conditions, to HIV disease progression and
increased HAND risk. Despite sustained HIV suppression in most ART-treated
individuals, indicated by routine plasma monitoring and occasional cerebrospinal
fluid (CSF) monitoring, 'blips' of HIV replication are often detected with more
frequent monitoring, thus challenging the concept of viral suppression. Although
the causes of HIV blipping are unclear, CSF HIV blipping associates with
neuroinflammation and, possibly, central nervous system (CNS) injury. The current
theory that macrophage-tropic HIV strains within the CNS predominate in driving
HAND and these associated factors is now also challenged. SUMMARY: Protection of
the CNS by ART is incomplete, probably due to combined effects of incomplete HIV
suppression, persistent immune activation and host comorbidity factors.
Adjunctive therapies to ART are necessary for more effective protection.
|Central Nervous System Diseases/immunology/pathology/*virology
[MESH]