Role of HIV in amyloid metabolism.
Role of HIV in amyloid metabolism.
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DOI:
10.1007/s11481-014-9546-0
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发表时间:
2014-09
影响因子:
6.2
通讯作者:
Ances, Beau M.
中科院分区:
文献类型:
--
作者:
Ortega, Mario;Ances, Beau M.
关键词:
HIV infection has changed from an acute devastating disease to a more chronic illness due to combination anti-retroviral treatment (cART). In the cART era, the life expectancy of HIV-infected (HIV+) individuals has increased. More HIV+ individuals are aging with current projections suggesting that 50% of HIV+ individuals will be over 50 years old by 2015. With advancing age, HIV+ individuals may be at increased risk of developing other potential neurodegenerative disorders [especially Alzheimer’s disease (AD)]. Pathology studies have shown that HIV increases intra and possibly extracellular amyloid beta (Aβ42), a hallmark of AD. We review the synthesis and clearance of Aβ42 and the effects of HIV on the amyloid pathway, and contrast the impact of AD and HIV on Aβ42 metabolism. Biomarker studies (cerebrospinal fluid AB and amyloid imaging) in HIV+ have shown mixed results. CSF Aβ42 has been shown to be either normal or diminished in HIV+ patients with HIV associated neurocognitive disorders (HAND). Amyloid imaging using [11C] PiB has also not demonstrated increased extracellular amyloid fibrillar deposits in HAND patients. We further demonstrate that Aβ42 deposition is not increased in older HIV+ patients using [11C] PiB amyloid imaging. Together, these results suggest that HIV and aging each independently affect Aβ42 deposition with no significant interaction present. Older HIV+ patients are probably not at increased risk for developing AD. However, future longitudinal studies of older HIV+ patients using multiple modalities (including the combination of CSF markers and amyloid imaging) are necessary for investigating the effects of HIV on Aβ42 metabolism.
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影响因子:
9.9
作者:
Ances, B. M.;Christensen, J. J.;Clifford, D. B.
通讯作者:
Clifford, D. B.
影响因子:
--
作者:
Ellis, RJ;Moore, DJ;Grant, I
通讯作者:
Grant, I
影响因子:
3.2
作者:
Daily, Abigail;Nath, Avindra;Hersh, Louis B.
通讯作者:
Hersh, Louis B.
影响因子:
9.9
作者:
Brew, BJ;Pemberton, L;Hagberg, L
通讯作者:
Hagberg, L
DOI:
10.1097/00005072-199711000-00011
发表时间:
1997-11-01
影响因子:
3.2
作者:
An, SF;Giometto, B;Scaravilli, F
通讯作者:
Scaravilli, F