title: [Serum concentration of hyaluronic acid in healthy populations and patients with rheumatoid arthritis--relationship to clinical disease activity of RA].
abstract: With the sandwich binding protein assay utilizing hyaluronic acid binding protein, we measured serum concentration of hyaluronic acid in 458 healthy persons, 71 patients with rheumatoid arthritis (RA) and 51 patients with various rheumatic diseases such as osteoarthritis (OA), progressive systemic sclerosis (PSS), systemic lupus erythematosus (SLE) and gout. The mean concentration +/- standard deviation (SD) of healthy persons whose age ranged 2 to 92 years old was 38.5 +/- 35.7ng/ml, and those with over 50 years old had apparently higher concentrations (51.9 +/- 40.5ng/ml) than those with below 50 of age (20.6 +/- 14.8ng/ml). When the upper limit of normal range was set up at 130 ng/ml, abnormal percentages were 62.0% (44/71) in RA, 0% (0/18) in OA, 6.3% (1/16) in PSS, 18.2% (2/11) in SLE and 0% (0/6) in gout. Patients who apparently had arthritis but not RA revealed normal or near to the upper limit in serum hyaluronic acid compared to RA patients having the mean +/- SD of 351.4 +/- 463.7ng/ml. When patients with RA were classified into stage I to IV with X ray of bone destruction, patients with more advanced X ray stage showed significantly higher serum concentrations of hyaluronic acid. Similarly, patients with lower activity of daily living revealed significantly higher serum concentrations of hyaluronic acid. In addition, serum hyaluronic acid level did correlate to concentration of serum CRP and sialic acid. Lansbury's index, strength of grip, joint score and erythrocyte sedimentation rate, but did not to duration of morning stiffness and titer of rheumatoid factor.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Laboratory Medicine, Faculty of Medicine, University of Tokyo.
authors.forename: S
authors.initials: S
authors.lastname: Yoshinoya
authors.forename: Y
authors.initials: Y
authors.lastname: Mizoguchi
authors.forename: Y
authors.initials: Y
authors.lastname: Hashimoto
authors.forename: A
authors.initials: A
authors.lastname: Yamada
authors.forename: S
authors.initials: S
authors.lastname: Uchida
authors.forename: A
authors.initials: A
authors.lastname: Taniguchi
authors.forename: K
authors.initials: K
authors.lastname: Nishioka
authors.forename: T
authors.initials: T
authors.lastname: Miyamoto
mesh_terms: D001172:Arthritis, Rheumatoid / Q000097:blood*; D005260:Female; D006801:Humans; D006820:Hyaluronic Acid / Q000097:blood*; D008180:Lupus Erythematosus, Systemic / Q000097:blood; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000097:blood; D012016:Reference Values; D012217:Rheumatoid Factor / Q000097:blood; D012595:Scleroderma, Systemic / Q000097:blood
chemical_list: D006820:Hyaluronic Acid; D012217:Rheumatoid Factor