Lectin-like oxidized low-density lipoprotein receptor-1 plays an important role in vascular inflammation in current smokers.

Abstract:

AIM:Smoking induces vascular inflammation and increases the risk of cardiovascular events. Lectinlike oxidized low-density lipoprotein receptor-1 (LOX-1) is a scavenger receptor that is induced by oxidative stress and is associated with atherosclerotic plaque formation and destabilization. LOX-1 interacts with C-reactive protein (CRP) and plays an important role in inflammatory diseases. We therefore hypothesized that LOX-1 may be involved in the onset of smoking-induced vascular inflammation. METHODS:We measured the soluble LOX-1 (sLOX-1) levels in sera obtained from 207 current smokers. RESULTS:The serum sLOX-1 levels positively correlated with various smoking variables, such as the number of cigarettes smoked per day (r= 0.150, p<0.05), the expired air carbon monoxide (CO) concentrations (r= 0.198, p<0.005) and the Fagerstrom test for nicotine dependence scores (r= 0.190, p<0.01). The serum levels of sLOX-1 also correlated with those of a representative inflammatory marker, the serum high-sensitivity CRP level (hsCRP; r= 0.232, p<0.005). A multivariate regression analysis revealed the independent determinants of the serum sLOX-1 level to be the expired air CO concentration (β= 0.182, p<0.05) and the hsCRP level (β= 0.213, p<0.01). CONCLUSIONS:The serum sLOX-1 level was found to increase in close association with both the smoking-related variables and the inflammatory marker hsCRP. These findings suggest that LOX-1 may therefore play an important role in the onset of smoking-induced inflammation and atherosclerosis in humans.

journal_name

J Atheroscler Thromb

authors

Takanabe-Mori R,Ono K,Wada H,Takaya T,Ura S,Yamakage H,Satoh-Asahara N,Shimatsu A,Takahashi Y,Fujita M,Fujita Y,Sawamura T,Hasegawa K

doi

10.5551/jat.16436

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

585-90

issue

6

eissn

1340-3478

issn

1880-3873

pii

DN/JST.JSTAGE/jat/16436

journal_volume

20

pub_type

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