Abstract:
:Pathological evidence suggests that alterations of the blood-brain barrier (BBB) may occur in association with human immunodeficiency virus (HIV) dementia (HIVD). Increased BBB permeability could contribute to the development of dementia by facilitating the entry of activated and infected monocytes, as well as potentially toxic serum proteins, into the central nervous system. One mechanism by which BBB permeability may be altered is through increased activity of select matrix metalloproteinases (MMPs). In the present study, we examined the possibility that MMPs that target critical BBB proteins, including laminin, entactin, and collagen type IV, are elevated in the cerebrospinal fluid (CSF) of patients with HIVD. We also examined the possibility that such MMPs could be produced by brain-derived cells, and that MMP production by these cells might be increased by tumor necrosis factor-alpha, an inflammatory cytokine that is produced by HIV-infected monocytes/microglia and is elevated in HIVD. By using western blot and enzyme-linked immunosorbent assay, we observed that CSF levels of pro-MMP-2 and pro-MMP-7 were increased in association with HIVD. In addition, through the use of gelatin substrate zymography, a sensitive functional assay for MMP-2 and MMP-9, we observed that MMP-2 or pro-MMP-9 activity was more frequently detectable in the CSF of individuals with HIV dementia (9/16) than in the CSF from either nondemented seropositive (2/11) or seronegative (0/11) controls. Although the presence of MMPs in the serum could contribute to elevated levels in the CSF, we also show that brain-derived cells release MMP-2, 7, and 9, and that such release is increased after their stimulation with tumor necrosis factor-alpha. Together, these results suggest that elevated CSF levels of select MMPs may reflect immune activation within the central nervous system. They also suggest that further studies may be warranted to determine whether these proteins may play a role in the development of symptomatic neurological disease.
journal_name
Ann Neuroljournal_title
Annals of neurologyauthors
Conant K,McArthur JC,Griffin DE,Sjulson L,Wahl LM,Irani DNdoi
10.1002/1531-8249(199909)46:3<391::aid-ana15>3.0.ckeywords:
subject
Has Abstractpub_date
1999-09-01 00:00:00pages
391-8issue
3eissn
0364-5134issn
1531-8249journal_volume
46pub_type
杂志文章abstract:OBJECTIVE:Central nervous system pathology in multiple sclerosis includes both focal inflammatory perivascular injury and injury to superficial structures, including the subpial region of the cortex, which reportedly exhibits a gradient of damage from the surface inward. We assessed how early in the multiple sclerosis ...
journal_title:Annals of neurology
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doi:10.1002/ana.25429
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journal_title:Annals of neurology
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doi:10.1002/ana.410060612
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abstract::It is well recognized that plasma fluctuations resulting from oral levodopa therapy may cause an unstable clinical response in parkinsonian patients. We have therefore developed a slow-release polymer matrix system that can deliver levodopa continuously for extended periods of time (at least 225 days) after subcutaneo...
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abstract::Because of the association of D-penicillamine (DP) therapy with myasthenia gravis, we have studied long-term DP treatment in five inbred strains of mice with doses comparable to those used in patients with rheumatoid arthritis. No clinical weakness or anti-acetylcholine receptor (AChR) antibody developed with up to 6 ...
journal_title:Annals of neurology
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doi:10.1002/ana.410160103
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doi:10.1002/ana.410080509
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doi:10.1002/ana.410260411
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pub_type: 杂志文章
doi:10.1002/ana.410190409
更新日期:1986-04-01 00:00:00
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journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410140605
更新日期:1983-12-01 00:00:00
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journal_title:Annals of neurology
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doi:10.1002/ana.22665
更新日期:2012-02-01 00:00:00
abstract::The pontine tegmentum contains the neurons responsible for generation of saccadic eye movements and certain phases of sleep. We studied two genetically unrelated patients with spinocerebellar degeneration and slow saccadic eye movements. Multiple all-night sleep studies in both patients disclosed absence of REM and st...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410070312
更新日期:1980-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1002/ana.410040203
更新日期:1978-08-01 00:00:00
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journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.10628
更新日期:2003-01-01 00:00:00
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journal_title:Annals of neurology
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doi:10.1002/ana.21444
更新日期:2008-10-01 00:00:00
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journal_title:Annals of neurology
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doi:
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journal_title:Annals of neurology
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journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.410350204
更新日期:1994-02-01 00:00:00
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journal_title:Annals of neurology
pub_type: 杂志文章
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更新日期:1993-05-01 00:00:00
abstract::We report an immunohistochemical study of the mitochondrial alpha-ketoglutarate dehydrogenase complex (KGDHC) in the substantia nigra in Parkinson's disease. The KGDHC, the three enzyme complex catalyzing the oxidation of alpha-ketoglutarate to succinate through succinic semialdehyde, is the rate-regulating enzyme of ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410350212
更新日期:1994-02-01 00:00:00
abstract::We report the use of a new stable isotope-labeled form of levodopa (LD) to examine in vivo central LD metabolism in Parkinson's disease (PD). Eight patients representing a wide spectrum of disease severity were administered 50 mg of carbidopa orally followed in 1 hour by an intravenous bolus of 150 mg of stable isotop...
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更新日期:1997-09-01 00:00:00
abstract::Phosphorus magnetic resonance spectra of resting muscle were obtained from 4 patients with alternating hemiplegia of childhood. All patients had abnormally high resonance intensities from inorganic phosphate and an abnormally low calculated cytosolic phosphorylation potential. Two of the 4 patients had abnormally low ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410330608
更新日期:1993-06-01 00:00:00
abstract:OBJECTIVE:Autosomal-dominant lateral temporal epilepsy (ADLTE) is a genetic focal epilepsy characterized by auditory symptoms. Two genes, LGI1 and RELN, encoding secreted proteins, are implicated in the etiology of ADLTE, but half of the affected families remain genetically unsolved, and the underlying molecular mechan...
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更新日期:2018-03-01 00:00:00
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更新日期:1990-10-01 00:00:00