title: Calorie restricted diet and urinary pentosidine in patients with rheumatoid arthritis.
abstract: Low-energy diets and fasting have suppressive effects on rheumatoid arthritis. It was reported recently that urine levels of pentosidine (i.e., an advanced glycation end product formed by glycosylation) is associated with the activity of rheumatoid arthritis. We conducted a regimen of caloric restriction combined with fasting in patients with rheumatoid arthritis, and then evaluated urinary pentosidine levels. Ten patients with rheumatoid arthritis underwent a 54-day caloric restriction program. Urinary pentosidine levels were measured and the Lansbury Index were determined by examining the clinical features, blood biochemistry and the inflammation activity of rheumatoid arthritis on days 0, 25 and 54. On day 0, the mean urinary pentosidine level of patients with rheumatoid arthritis was significantly higher than that of the control subjects. On day 54, the mean body weight had reduced due to caloric restriction. The mean values of the erythrocyte sedimentation rate and the Lansbury Index of patients both significantly decreased during the study. In addition, although the urinary pentosidine levels showed no significant difference between day 0 and 25, it was significantly decreased at the end of the study (day 54). The study showed that under a low energy diet a reduction of disease activity in rheumatoid arthritis was accompanied with a reduction of the urinary pentosidine.
authors.affiliation: Department of Public Health, Hamamatsu University School of Medicine, Japan. iwashige@miyako-clinic.jp
authors.forename: Kenichi
authors.initials: K
authors.lastname: Iwashige
authors.forename: Katsuyasu
authors.initials: K
authors.lastname: Kouda
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Kouda
authors.forename: Kentaro
authors.initials: K
authors.lastname: Horiuchi
authors.forename: Masaaki
authors.initials: M
authors.lastname: Takahashi
authors.forename: Akira
authors.initials: A
authors.lastname: Nagano
authors.forename: Toshiro
authors.initials: T
authors.lastname: Tanaka
authors.forename: Hiroichi
authors.initials: H
authors.lastname: Takeuchi
mesh_terms: D001120:Arginine / Q000031:analogs & derivatives* / Q000652:urine*; D001172:Arthritis, Rheumatoid / Q000178:diet therapy* / Q000503:physiopathology*; D001799:Blood Sedimentation; D001806:Blood Urea Nitrogen; D031204:Caloric Restriction; D002851:Chromatography, High Pressure Liquid; D005215:Fasting / Q000502:physiology*; D005260:Female; D006801:Humans; D007564:Japan; D008137:Longitudinal Studies; D008239:Lysine / Q000031:analogs & derivatives* / Q000652:urine*; D008875:Middle Aged
chemical_list: D001120:Arginine; C062187:pentosidine; D008239:Lysine