Document Detail


Adiponectin is a mediator of the inverse association of adiposity with radiographic damage in rheumatoid arthritis.
MedLine Citation:
PMID:  19714593     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: Recent reports have suggested that increasing adiposity may protect against radiographic damage in rheumatoid arthritis (RA). We explored the role of serum adipokines (adiponectin, resistin, and leptin) in mediating this association.
METHODS: Patients with RA underwent total-body dual x-ray absorptiometry for measurement of total and regional body fat and lean mass, abdominal computed tomography for measurement of visceral fat area, and radiographs of the hands and feet scored according to the modified Sharp/van der Heijde (SHS) method. Serum levels of adipokines were measured and cross-sectional associations with radiographic damage were explored, adjusting for pertinent confounders. The associations of measures of adiposity with radiographic damage were explored with the introduction of adipokines into multivariable modeling as potential mediators.
RESULTS: Among the 197 patients studied, adiponectin demonstrated a strong association with radiographic damage, with the log SHS score increasing by 0.40 units for each log unit increase in adiponectin (P = 0.001) after adjusting for pertinent predictors of radiographic damage. Adiponectin independently accounted for 6.1% of the explainable variability in SHS score, a proportion comparable with rheumatoid factor, and greater than HLA-DRB1 shared epitope alleles or C-reactive protein levels. Resistin and leptin were not associated with radiographic damage in adjusted models. An inverse association between visceral fat area and radiographic damage was attenuated when adiponectin was modeled as a mediator. The association of adiponectin with radiographic damage was stronger in patients with longer disease duration.
CONCLUSION: Adiponectin may represent a mechanistic link between low adiposity and increased radiographic damage in RA. Adiponectin modulation may represent a novel strategy for attenuating articular damage.
Authors:
Jon T Giles; Matthew Allison; Clifton O Bingham; William M Scott; Joan M Bathon
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Arthritis and rheumatism     Volume:  61     ISSN:  0004-3591     ISO Abbreviation:  Arthritis Rheum.     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-09-21     Completed Date:  2009-10-16     Revised Date:  2014-10-07    
Medline Journal Info:
Nlm Unique ID:  0370605     Medline TA:  Arthritis Rheum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1248-56     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Absorptiometry, Photon
Adiponectin / blood*
Adiposity / physiology*
Aged
Aged, 80 and over
Arthritis, Rheumatoid / blood*,  physiopathology,  radiography*
Cohort Studies
Cross-Sectional Studies
Female
Foot Joints / radiography
Hand Joints / radiography
Humans
Intra-Abdominal Fat / physiopathology
Leptin / blood
Male
Middle Aged
Multivariate Analysis
Prospective Studies
Resistin / blood
Severity of Illness Index*
Grant Support
ID/Acronym/Agency:
1-K23 AR054112-01/AR/NIAMS NIH HHS; M01 RR02719/RR/NCRR NIH HHS; R01 AR050026/AR/NIAMS NIH HHS; R01 AR050026-05/AR/NIAMS NIH HHS
Chemical
Reg. No./Substance:
0/Adiponectin; 0/Leptin; 0/Resistin
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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