| Adiponectin is a mediator of the inverse association of adiposity with radiographic damage in rheumatoid arthritis. | |
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MedLine Citation:
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PMID: 19714593 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Jon T Giles; Matthew Allison; Clifton O Bingham; William M Scott; Joan M Bathon |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Arthritis and rheumatism Volume: 61 ISSN: 0004-3591 ISO Abbreviation: Arthritis Rheum. Publication Date: 2009 Sep |
Date Detail:
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Created Date: 2009-09-21 Completed Date: 2009-10-16 Revised Date: 2013-05-31 |
Medline Journal Info:
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Nlm Unique ID: 0370605 Medline TA: Arthritis Rheum Country: United States |
Other Details:
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Languages: eng Pagination: 1248-56 Citation Subset: AIM; IM |
Affiliation:
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The Johns Hopkins University School of Medicine, Baltimore, Maryland. gilesjont@jhmi.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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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:
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1-K23 AR054112-01/AR/NIAMS NIH HHS; M01 RR02719/RR/NCRR NIH HHS; R01 AR050026-05/AR/NIAMS NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Adiponectin; 0/Leptin; 0/Resistin |
| Comments/Corrections | |
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