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Retinal vascular calibre is altered in patients with rheumatoid arthritis: a biomarker of disease activity and cardiovascular risk?
MedLine Citation:
PMID:  21172929     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Objectives. Alterations in retinal vascular calibre, particularly wider venular calibre, have been independently associated with elevated markers of inflammation and cardiovascular risk in the general population. We hypothesized that retinal vascular calibre would be altered in patients with RA, who are known to have both elevated cardiovascular risk and chronic, systemic inflammation. Methods. Retinal vascular calibre was measured from digital retinal photographs using computerized methods in 51 RA patients and 51 age- and gender-matched controls. Retinal vascular calibre was compared between RA and control patients with adjustment for relevant variables including cardiovascular risk factors and companion vessel calibre. The relationship between retinal venular calibre and inflammation was assessed by comparing controls and RA patients with high and lower disease activity. Results. Retinal venular calibre [mean (s.d.)] was significantly wider in RA patients than in controls [235.9 (24.6) vs 211.6 (21.0) µm, P < 0.001]. After adjustment for all relevant variables, mean venular calibre remained 20.3 µm (95% CI 10.4, 30.3) wider in RA patients compared with controls. Retinal venular calibre [mean (s.d.)] also increased with increasing levels of systemic inflammation: 211.6 (21.0) µm in controls, 232.3 (22.4) µm in RA patients with moderate or lower disease activity and 255.5 (28.3) µm in RA patients with high disease activity (P for trend <0.0001). Conclusions. This study demonstrates that RA patients have dilated retinal venular calibre, reflecting systemic inflammation and possibly increased cardiovascular risk. Longitudinal studies correlating retinal vascular calibre with subsequent cardiovascular events will clarify the clinical utility of this test in patients with RA.
Authors:
Sharon Van Doornum; Gemma Strickland; Ryo Kawasaki; Jing Xie; Ian P Wicks; Lauren A B Hodgson; Tien Y Wong
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-12-20
Journal Detail:
Title:  Rheumatology (Oxford, England)     Volume:  -     ISSN:  1462-0332     ISO Abbreviation:  -     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883501     Medline TA:  Rheumatology (Oxford)     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Medicine (RMH/WH), University of Melbourne, Department of Rheumatology, Royal Melbourne Hospital, Melbourne Health, Melbourne, Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, University of Melbourne, Victoria, Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia and Singapore Eye Research Institute, National University of Singapore, Singapore.
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