Published online Feb 18, 2017. doi: 10.5312/wjo.v8.i2.149
Peer-review started: September 19, 2016
First decision: October 21, 2016
Revised: November 18, 2016
Accepted: December 7, 2016
Article in press: December 9, 2016
Published online: February 18, 2017
Processing time: 150 Days and 16.4 Hours
To determine the role of cartilage oligomeric matrix protein (COMP), interleukin (IL)-6, IL-10 and ratio of IL-6/IL-10 as risk factors of symptomatic lumbar osteoarthritis (OA) in postmenopausal women with estrogen deficiency.
Case-control study had been conducted in Sanglah General Hospital from October 2015 until March 2016. The blood samples were obtained and analyzed by enzyme-linked immunosorbent assay (ELISA).
From 44 pairs of samples which divided into 44 samples as case group and 44 samples as control group showed that high level of COMP in estrogen deficiency postmenopausal women were not at risk (OR = 0.7; 95%CI: 0.261-1.751; P = 0.393) for symptomatic lumbar OA (cut-off point 0.946). Estrogen deficiency in postmenopausal women with the high level of IL-6 had 2.7 times risk (OR = 2.7; 95%CI: 0.991-8.320; P = 0.033) for symptomatic lumbar OA from the low level of IL-6 (cut-off point 2.264). At lower level of IL-10, there was no risk for symptomatic lumbar OA (OR = 0.6; 95%CI: 0.209-1.798; P = 0.345) than with the higher level of IL-10 (cut-off point 6.049). While the high ratio of IL-6/IL-10 level in estrogen deficiency postmenopausal women gave 3.4 times risk (OR = 3.4; 95%CI: 1.204-11.787; P = 0.011) for symptomatic lumbar OA than the low ratio of IL-6/IL-10 level (cut-off point 0.364).
High ratio of IL-6/IL-10 plasma level was the highest risk factor for causing symptomatic lumbar OA in postmenopausal women with estrogen deficiency.
Core tip: High levels of cartilage oligomeric matrix protein in estrogen deficiency postmenopausal women were not at risk for symptomatic lumbar osteoarthritis (OA). Estrogen-deficient postmenopausal women with the high levels of interleukin (IL)-6 had higher risk for symptomatic lumbar OA from the low level of IL-6. At lower levels of IL-10, there was no risk for symptomatic lumbar OA than with the higher levels of IL-10. High ratio of IL-6/IL-10 levels in estrogen deficiency postmenopausal women produced higher risk for symptomatic lumbar OA.