| Neurometabolite abnormalities in simian immunodeficiency virus-infected macaques with chronic morphine administration. | |
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MedLine Citation:
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PMID: 20938808 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Opiate abuse increases the risk for human immunodeficiency virus (HIV) infection, while both opiates and HIV may impact the immune and nervous systems. To model potential interactions between opiate drugs and HIV on the brain, neurometabolite levels were evaluated in simian immunodeficiency virus (SIV)-infected macaques with or without chronic morphine administration. Over the course of the study, 58% of these SIV-infected animals progressed to acquired immune deficiency syndrome (AIDS). Brain extracts from four brain regions were evaluated with proton magnetic resonance spectroscopy. Animals with AIDS had lower N-acetyl-aspartate in all four brain regions (p ≤ 0.05) as well as lower frontal gray matter total creatine (p = 0.03), lower frontal white matter (p = 0.003) and caudate (p = 0.002) glutamate, and higher frontal white matter myo-inositol (p = 0.05) than the healthier non-AIDS macaques. Morphine-dependent animals had higher levels of myo-inositol in the putamen (p = 0.003), especially those with AIDS. In the animals with AIDS, those with morphine dependence had higher total creatine in the frontal white matter (p = 0.04) than those treated with saline, which in turn had lower creatine than saline-injected animals without AIDS (p = 0.04), leading to an interaction between the effects of morphine and AIDS on total creatine in this brain region (ANOVA p = 0.02). The majority of these brain metabolites correlated with viral counts indicating more severe metabolite abnormalities in animals with higher viral loads or set points. Collectively, these findings suggest that chronic morphine may protect against the neurotoxic effect of AIDS and reinforce the importance of maintaining a low viral load in AIDS. |
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Authors:
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Christine C Cloak; Linda Chang; Shawn P O'Neil; Thomas M Ernst; Daniel C Anderson; Robert M Donahoe |
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Publication Detail:
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Type: Journal Article Date: 2010-10-12 |
Journal Detail:
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Title: Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology Volume: 6 ISSN: 1557-1904 ISO Abbreviation: J Neuroimmune Pharmacol Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-07-01 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101256586 Medline TA: J Neuroimmune Pharmacol Country: United States |
Other Details:
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Languages: eng Pagination: 371-80 Citation Subset: IM |
Affiliation:
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Department of Medicine, Neuroscience and MRI Research, University of Hawaii, 1356 Lusitana St #713, Honolulu, HI, 96813, USA, cloak@hawaii.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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