Relationship between atherosclerosis and knee osteoarthritis as graded by radiography and ultrasonography in females

The role of oxidation of low-density lipids in pathogenesis of osteoarthritis: A narrative review

Osteoarthritis (OA) is a chronic joint disorder that causes degeneration of cartilage, synovial inflammation, and formation of osteophytes. Aging, obesity, and sex are considered the main risk factors of OA. Recent studies have suggested that metabolic syndrome (MetS) disorders, such as hypertension, hyperlipidemia, diabetes mellitus, and obesity, may be involved in the pathogenesis and progression of OA. MetS disorders are common diseases that also result in atherosclerosis. Researchers believe that OA and atherosclerosis have underlying similar molecular mechanisms because the prevalence of both diseases increases with age. Oxidation of low-density lipoprotein (ox-LDL) is believed to play a role in the pathogenesis of atherosclerosis. Recent reports have shown that ox-LDL and low-density lipoprotein receptor 1 (LOX-1) are involved in the pathogenesis of OA. The purpose of this narrative review is to summarize the current understanding of the role of the LOX-1/ox-LDL system in the pathogenesis of OA and to reveal common underlying molecular pathways that are shared by MetS in OA and the LOX-1/ox-LDL system.

Acupuncture Decreased the Risk of Coronary Heart Disease in Patients with Osteoarthritis in Taiwan: A Nationwide Matched Cohort Study

Objectives: Patients with osteoarthritis (OA) are more likely to develop coronary heart disease (CHD) than the general population. Acupuncture is commonly used in OA patients; however, the therapeutic effect of acupuncture on the risk of CHD in patients with OA and the association between OA patients and their risk to develop CHD in Taiwan are unknown. We investigated the risk of CHD according to acupuncture use in OA patients and compared it with the general population. Design: Records obtained from Taiwan's National Health Insurance Research Database identified 84,773 patients with OA, which were compared with 727,359 patients without OA diagnosis. Five thousand forty-six of those who met study inclusion criteria had 1:1 frequency matching and were categorized as OA-acupuncture cohort (n = 1682), OA nonacupuncture cohort (n = 1682), and non-OA cohort (n = 1682). Cox proportional hazards regression analysis determined the risk of CHD, which was defined as the study main outcome. Therapeutic effects of acupuncture and medical expenditure were also analyzed. Results: OA nonacupuncture cohort had 3.04 higher risk to develop CHD compared with OA-acupuncture cohort (95% confidence interval [CI], 2.54-3.63, p < 0.001) and non-OA cohort had 1.88 higher risk to develop CHD compared with OA-acupuncture cohort (95% CI, 1.52-2.32, p < 0.001). In subgroup analyses, OA patients treated with both acupuncture and oral steroids were at significantly lower risk of CHD compared with those who used neither (adjusted hazard ratio 0.34; 95% CI, 0.22-0.53), and OA patients treated with acupuncture had the lowest medical expenditure in a follow-up time of 6 months, and 3 and 5 years. Conclusion: This is the first large-scale investigation in Taiwan that shows the association between OA and CHD and the beneficial effects of acupuncture in OA patients, and their associated risk to develop CHD. Our results may provide valuable information for health policy decision making. Further randomized controlled trials are needed to confirm these observational findings.