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Translational potential of long-term decreases in mitochondrial lipids in a mouse model of Gulf War Illness.

Abstract：

:Gulf War Illness (GWI) affects 25% of veterans from the 1990-1991 Gulf War (GW) and is accompanied by damage to the brain regions involved in memory processing. After twenty-five years, the chronic pathobiology of GWI is still unexplained. To address this problem, we examined the long-term consequences of GW exposures in an established GWI mouse model to identify biological processes that are relevant to the chronic symptoms of GWI. Three-month old male C57BL6 mice were exposed for 10days to GW agents (pyridostigmine bromide and permethrin). Barnes Maze testing conducted at 15- and 16-months post-exposure revealed learning and memory impairment. Immunohistochemical analyses showed astroglia and microglia activation in the hippocampi of exposed mice. Proteomic studies identified perturbation of mitochondria function and metabolomics data showed decreases in the Krebs cycle compounds, lactate, β-hydroxybutyrate and glycerol-3 phosphate in the brains of exposed mice. Lipidomics data showed decreases in fatty acids, acylcarnitines and phospholipids, including cardiolipins in the brains of exposed mice. Pilot biomarker studies showed that plasma from exposed mice and veterans with GWI had increases in odd-chain, and decreases in long-chain, acylcarnitines compared to their respective controls. Very long-chain acylcarnitines were decreased in veterans with GWI compared to controls. These studies suggest that mitochondrial lipid disturbances might be associated with GWI and that further investigation is required to determine its role in the pathophysiology of this illness. Targeting mitochondrial function may provide effective therapies for GWI, and that lipid abnormalities could serve as biomarkers of GWI.

journal_name

Toxicology

journal_title

Toxicology

authors

Abdullah L,Evans JE,Joshi U,Crynen G,Reed J,Mouzon B,Baumann S,Montague H,Zakirova Z,Emmerich T,Bachmeier C,Klimas N,Sullivan K,Mullan M,Ait-Ghezala G,Crawford F

doi

10.1016/j.tox.2016.10.012

subject

Has Abstract

pub_date

2016-11-30 00:00:00

pages

22-33

eissn

0300-483X

issn

1879-3185

pii

S0300-483X(16)30256-6

journal_volume

372

pub_type

杂志文章

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