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The Saturated Fatty Acid Palmitate Induces Human Monocytic Cell Toxicity Toward Neuronal Cells: Exploring a Possible Link Between Obesity-Related Metabolic Impairments and Neuroinflammation.
MedLine Citation:
PMID:  22045487     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Obesity is linked to increased risk of Alzheimer's disease and cognitive impairment. Microglia-mediated neuroinflammation is implicated in neuronal loss. Elevated levels of fatty acids seen in obesity induce inflammation in peripheral tissues. Whether fatty acids promote neuroinflammation is unknown. Using an established neuroinflammation model involving human microglia-like THP-1 cells and SH-SY5Y neuroblastoma cells, we show that the saturated fatty acid palmitate, but not the unsaturated fatty acids oleate or linoleate, induces THP-1 cell pro-inflammatory cytokine secretion and neurotoxicity. Inhibition of c-Jun NH2-terminal kinase (JNK) reduces this neurotoxicity. Therefore, elevated saturated fatty acids may induce neuroinflammation through pathways involving JNK activation.
Authors:
Jonathan P Little; Jocelyn M Madeira; Andis Klegeris
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-11-1
Journal Detail:
Title:  Journal of Alzheimer's disease : JAD     Volume:  -     ISSN:  1875-8908     ISO Abbreviation:  -     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9814863     Medline TA:  J Alzheimers Dis     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Biology, I.K. Barber School of Arts and Sciences, University of British Columbia Okanagan, Kelowna, BC, Canada.
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