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Endogenous parathyroid hormone and knee osteoarthritis: a cross‐sectional study
Author(s) -
Lee Sunggun
Publication year - 2016
Publication title -
international journal of rheumatic diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 41
eISSN - 1756-185X
pISSN - 1756-1841
DOI - 10.1111/1756-185x.12563
Subject(s) - osteoarthritis , medicine , quartile , odds ratio , national health and nutrition examination survey , confidence interval , cross sectional study , body mass index , parathyroid hormone , logistic regression , arthropathy , physical therapy , endocrinology , pathology , calcium , population , alternative medicine , environmental health
Aim Although animal studies have shown that parathyroid hormone ( PTH ) analogs can have disease‐modifying effect on experimental osteoarthritis, there is little human data. This study aimed to analyze the association between endogenous PTH and knee osteoarthritis in humans. Methods This was a cross‐sectional study including 5880 participants of The Fifth Korean National Health and Nutrition Examination Survey. Serum intact PTH was measured by chemiluminescence assay. Radiographic knee osteoarthritis was defined as a Kellgren–Lawrence grade of ≥ 2. The association between knee osteoarthritis and natural log‐transformed PTH (ln PTH ) was modeled using logistic regression analyses adjusting for age, body mass index categories, calcium intake and serum 25‐hydroxyvitamin D in both sexes. Results The prevalence of radiographic knee osteoarthritis tended to be higher in the highest quartile of PTH in women. In men, there was no clear trend across the quartiles of PTH . In multivariable analyses, there was no significant association between ln PTH and radiographic knee osteoarthritis in either sex (odds ratio [95% confidence interval]): 0.81 (0.64–1.02) in women and 0.88 (0.67–1.16) in men. Analyses on symptomatic radiographic knee osteoarthritis showed no significant association. Conclusion Although there was a trend for a negative association in women, no statistically significant association was found between endogenous PTH and knee osteoarthritis.