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2016 ; 57
(11
): 1976-1986
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Oxidative stress and lipotoxicity
#MMPMID27009116
Hauck AK
; Bernlohr DA
J Lipid Res
2016[Nov]; 57
(11
): 1976-1986
PMID27009116
show ga
The ?,? polyunsaturated lipid aldehydes are potent lipid electrophiles that
covalently modify lipids, proteins, and nucleic acids. Recent work highlights the
critical role these lipids play under both physiological and pathological
conditions. Protein carbonylation resulting from nucleophilic attack of lysine,
histidine, and cysteine residues is a major outcome of oxidative stress and
functions as a redox-sensitive signaling mechanism with roles in autophagy, cell
proliferation, transcriptional control, and apoptosis. In addition, protein
carbonylation is implicated as an initiating factor in mitochondrial dysfunction
and endoplasmic reticulum stress, providing a mechanistic connection between
oxidative stress and metabolic disease. In this review, we discuss the generation
and metabolism of reactive lipid aldehydes, as well as their signaling roles.