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Disease activity, cytokines, chemokines and the risk of incident diabetes in rheumatoid arthritis.

Authors
  • Baker, Joshua F1, 2
  • England, Bryant R3, 4
  • George, Michael2
  • Cannon, Grant5
  • Sauer, Brian6, 7
  • Ogdie, Alexis2
  • Hamilton, Bartlett C8
  • Hunter, Carlos9
  • Duryee, Michael J10
  • Thiele, Geoffrey11, 12
  • Mikuls, Ted R13
  • 1 Rheumatology, Corporal Michael J Crescenz VA Medical Center, Philadelphia, PA, USA [email protected]
  • 2 Departments of Medicine/Rheumatology and Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, PA, USA.
  • 3 Rheumatology, University of Nebraska Medical Center, Omaha, Nebraska, USA.
  • 4 Rheumatology, VA Nebraska-Western Iowa Health Care System, Omaha, Nebraska, USA.
  • 5 Rheumatology, VA Salt Lake City Health Care System, Salt Lake City, Utah, USA.
  • 6 VA Salt Lake City Health Care System, Salt Lake City, Utah, USA.
  • 7 University of Utah School of Medicine, Salt Lake City, Utah, USA.
  • 8 University of Nebraska Medical Center and Omaha VA Medical Center, University of Nebraska, Omaha, Nebraska, USA.
  • 9 University of Nebraska Medical Center, Omaha, Nebraska, USA.
  • 10 Internal Medicine Division of Rheumatology, University of Nebraska System, Lincoln, Nebraska, USA.
  • 11 Internal Medicine, University of Nebraska System, Lincoln, Nebraska, USA.
  • 12 Research Service, 151, VAMC Omaha, Omaha, Nebraska, USA.
  • 13 Department of Medicine, University of Nebraska System, Lincoln, Nebraska, USA.
Type
Published Article
Journal
Annals of the Rheumatic Diseases
Publisher
BMJ
Publication Date
Jan 04, 2021
Identifiers
DOI: 10.1136/annrheumdis-2020-219140
PMID: 33397733
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Rheumatoid arthritis (RA) is associated with a higher risk of diabetes mellitus (DM). Our aim was to determine associations between inflammatory disease activity (including evaluation of specific cytokines and chemokines) and incident DM. Participants were adults with physician-confirmed RA from Veteran's Affairs Rheumatoid Arthritis Registry. Disease activity and clinical assessments occur longitudinally as part of clinical care. Thirty cytokines and chemokines were measured in banked serum obtained at the time of enrolment. Cytokine/chemokine values were log-adjusted and standardised (per SD). Incident DM was defined based on validated algorithms using diagnostic codes and medications. Multivariable Cox proportional hazard models evaluated associations between clinical factors and incident DM. Independent associations between cytokines/chemokines and incident DM were assessed adjusting for age, sex, race, smoking, body mass index (BMI) and medication use at baseline. Among 1866 patients with RA without prevalent DM at enrolment, there were 130 incident cases over 9223 person-years of follow-up. High Disease Activity Score (DAS28)-C reactive protein (CRP), obese BMI, older age and male sex were associated with greater risk for incident DM while current smoking and methotrexate use were protective. Patients using methotrexate were at lower risk. Several cytokines/chemokines evaluated were independently associated (per 1 SD) with DM incidence including interleukin(IL)-1, IL-6 and select macrophage-derived cytokines/chemokines (HR range 1.11-1.26). These associations were independent of the DAS28-CRP. Higher disease activity and elevated levels of cytokines/chemokines are associated with a higher risk of incident DM in patients with RA. Future study may help to determine if targeted treatments in at-risk individuals could prevent the development of DM. © Author(s) (or their employer(s)) 2021. No commercial re-use. See rights and permissions. Published by BMJ.

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