Serum osteoprotegrin (OPG) in subclinical atherosclerosis in systemic lupus erythematosus.

Abstract:

:Introduction Osteoprotegerin (OPG) is a member of the tumor necrosis factor (TNF) receptor family. It has recently been demonstrated that OPG is produced by a variety of tissues, including the cardiovascular system (heart, arteries, veins), lung, kidney, immune tissues, and bone. The OPG-RANKL signaling pathway is strongly related to vascular calcification. We determined the association of this biomarker with subclinical atherosclerosis in systemic lupus erythematous (SLE). Methods We measured OPG and markers of subclinical atherosclerosis (coronary artery calcium (CAC), carotid intima-media thickness (cIMT) carotid plaque) in 166 SLE patients (91% female, 64% Caucasian, 31% African American, 5% others, mean age 45 years). Subgroups of patients with different levels of OPG level were compared with respect to average levels of CAC, cIMT, and with respect to presence of carotid plaque. Age was adjusted for using multiple regression. Results OPG was highly correlated with age ( p < 0.0001). Individuals with higher levels of OPG tended to have higher measures of CAC, cIMT, and more carotid plaque. However, after adjustment for age, these associations, while still positive, were no longer statistically significant. Conclusion In our study much of the association observed was due to confounding by age, and after adjusting for age, our findings do not rule out the possibility of a null association.

journal_name

Lupus

journal_title

Lupus

authors

Kiani AN,Aukrust P,Ueland T,Hollan I,Barr E,Magder LS,Petri M

doi

10.1177/0961203316682101

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

865-870

issue

8

eissn

0961-2033

issn

1477-0962

pii

0961203316682101

journal_volume

26

pub_type

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