Involvement of oxysterols in age-related diseases and ageing processes.

Abstract:

:Ageing is accompanied by increasing vulnerability to major pathologies (atherosclerosis, Alzheimer's disease, age-related macular degeneration, cataract, and osteoporosis) which can have similar underlying pathoetiologies. All of these diseases involve oxidative stress, inflammation and/or cell death processes, which are triggered by cholesterol oxide derivatives, also named oxysterols. These oxidized lipids result either from spontaneous and/or enzymatic oxidation of cholesterol on the steroid nucleus or on the side chain. The ability of oxysterols to induce severe dysfunctions in organelles (especially mitochondria) plays key roles in RedOx homeostasis, inflammatory status, lipid metabolism, and in the control of cell death induction, which may at least in part contribute to explain the potential participation of these molecules in ageing processes and in age related diseases. As no efficient treatments are currently available for most of these diseases, which are predicted to become more prevalent due to the increasing life expectancy and average age, a better knowledge of the biological activities of the different oxysterols is of interest, and constitutes an important step toward identification of pharmacological targets for the development of new therapeutic strategies.

journal_name

Ageing Res Rev

journal_title

Ageing research reviews

authors

Zarrouk A,Vejux A,Mackrill J,O'Callaghan Y,Hammami M,O'Brien N,Lizard G

doi

10.1016/j.arr.2014.09.006

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

148-62

eissn

1568-1637

issn

1872-9649

pii

S1568-1637(14)00109-3

journal_volume

18

pub_type

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