title: Effects of medication-treated diabetes on incidence and progression of knee osteoarthritis: a longitudinal analysis of the Osteoarthritis Initiative data.
abstract: Diabetes has been proposed as a factor involved in the pathogenesis of osteoarthritis (OA). Currently, there is a lack of research evaluating the prospective impact of diabetes on OA structural outcomes. In this study, we assessed the effects of medication-treated diabetes on incidence and progression of knee OA. We analysed longitudinal data from the multi-center, longitudinal, prospective observational Osteoarthritis Initiative (OAI) study. The main outcomes were radiographic OA incidence (development of Kellgren-Lawrence grade 2 with joint space narrowing, JSN) and progression (increase in semiquantitative JSN or a new knee replacement). For the study of incidence, we selected participants with KL <2 or /KL = 2 without JSN at baseline (incidence sample). To evaluate progression, we selected participants with baseline JSN <3 (progression sample). We used generalized estimating equations (GEE) logistic regression with adjustment for potential confounders to evaluate the effects of medication-treated diabetes on knee OA incidence and progression. We studied 3725 knees (3498 non-diabetic and 228 diabetic) in the incidence sample and 3594 knees (3335 non-diabetic and 259 diabetic) in the progression sample. Medication-treated diabetes did not have an effect on knee OA incidence (odds ratio, OR 0.53, 95% confidence interval, CI 0.23-1.5). There was an independent association between medication-treated diabetes and reduced progression of knee OA [OR 0.66, 95% CI (0.44-0.98)]. Medication-treated diabetes has no effect on knee OA incidence but reduces knee OA progression. The role of diabetes and anti-diabetic drugs in knee OA progression needs further exploration.
authors.affiliation: Laboratory of Clinical Immunopharmacology, Research Institute of Fundamental and Clinical Immunology, 6 Zalesskogo Str., 630099, Novosibirsk, Russia. ivan.shirinsky@gmail.com.
authors.forename: Ivan V
authors.initials: IV
authors.lastname: Shirinsky
authors.affiliation: Laboratory of Clinical Immunopharmacology, Research Institute of Fundamental and Clinical Immunology, 6 Zalesskogo Str., 630099, Novosibirsk, Russia.
authors.forename: Valery S
authors.initials: VS
authors.lastname: Shirinsky
mesh_terms: D000368:Aged; D016009:Chi-Square Distribution; D003920:Diabetes Mellitus / Q000175:diagnosis / Q000188:drug therapy* / Q000453:epidemiology; D018450:Disease Progression; D005260:Female; D006801:Humans; D007004:Hypoglycemic Agents / Q000627:therapeutic use*; D015994:Incidence; D016015:Logistic Models; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000453:epidemiology*; D011379:Prognosis; D011446:Prospective Studies; D065840:Protective Factors; D012307:Risk Factors; D013997:Time Factors; D014481:United States / Q000453:epidemiology
chemical_list: D007004:Hypoglycemic Agents
keywords: Comorbidity; Diabetes mellitus; Incidence; Knee osteoarthritis; Progression