Cited by 71Rheumatoid Arthritis Research and TherapiesCardiac electrophysiology and arrhythmiasAutoimmune and Inflammatory Disorders Research

Association between corrected QT interval and inflammatory cytokines in rheumatoid arthritis

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Adlan, Ahmed M., Panoulas, Vasileios F., Smith, Jacqueline P., Fisher, James P., Kitas, George D.·2015·The Journal of Rheumatology

Abstract

Objective.: Corrected QT (QTc) interval predicts all-cause and cardiovascular mortality and may contribute to the increased mortality risk in rheumatoid arthritis (RA). Animal experiments have shown that proinflammatory cytokines [tumor necrosis factor (TNF)-α and interleukin 1 (IL-1)] can prolong cardiomyocyte action potential. We sought to determine whether elevations in circulating inflammatory cytokines were independently associated with QTc prolongation in patients with RA. Methods.: One hundred twelve patients [median age 62 (interquartile range 17) yrs; 80 women (71%)] from a well-characterized RA cohort underwent baseline 12-lead electrocardiograms for QT interval measurement and contemporary blood sampling to assess concentrations of inflammatory markers including C-reactive protein (CRP), TNF-α, and interleukins (IL-1α, IL-1β, IL-6, IL-10). QTc was calculated using the Bazett (QT BAZ= QT ÷ √RR) and Framingham Heart Study (QT FHS= QT + 0.154 × [1 – RR]) heart rate correction formulas. Results.: Inflammatory cytokines (TNF-α, IL-1β, IL-6, IL-10) were positively correlated with QT BAZ(Spearman rank correlation coefficient rho = 0.199, 0.210, 0.222, 0.333; all p < 0.05). In multivariable regression analysis, these associations were all confounded by age except IL-10, where higher tertile groups were independently and positively associated with QT BAZ(β = 0.202, p = 0.023) and QT FHS(β = 0.223, p = 0.009) when compared to the lower tertile. CRP (per unit increase) was independently associated with QT BAZ(β = 0.278, p = 0.001), but not QT FHS. Conclusion.: To our knowledge, ours is the first study demonstrating a contemporary link between inflammatory cytokines and QT interval in humans. Our results suggest that a lower inflammatory burden may protect against QTc prolongation in patients with RA. However, further studies are required to confirm the effects of pro- and antiinflammatory cytokines on QTc interval.

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  1. Clarke CJ, Hales A, Hunt A, Foxwell BM. IL-10-mediated suppression of TNF-alpha production is independent of its ability to inhibit NF kappa B activity. Eur J Immunol 1998;28:1719-26.

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Authors
Adlan, A. M., Panoulas, V. F., Smith, J. P., Fisher, J. P., & Kitas, G. D.
Affiliations
National Health Service (GB)
Venue
The Journal of Rheumatology
Published
2015-01-15
Volume
42
Issue
3
Pages
421-428
ISSN
  • 0315-162X (ISSN-L)
  • 1499-2752
OpenAlex
W2327614829
Cited by
71
References
52
Citations by year
2026: 6 · 2025: 2 · 2024: 10 · 2023: 4 · 2022: 8 · 2021: 3 · 2020: 9 · 2019: 4 · 2018: 11 · 2017: 5 · 2016: 7 · 2015: 2
FWCI
6.99
Type
journal article
Language
en
Open access
Locations
  • The Journal of Rheumatology (publishedVersion)
  • PubMed (publishedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Funders
  • Versus Arthritis (19633)
  • Medical Research Council (MR/K00414X/1)
Topics
  • Health Sciences › Medicine › Rheumatology › Rheumatoid Arthritis Research and Therapies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Health Sciences › Medicine › Hematology › Autoimmune and Inflammatory Disorders Research
Keywords
rheumatoid arthritis, QTc interval, QTc prolongation, inflammatory cytokines, TNF-α, interleukin-1, interleukin-6, IL-10, C-reactive protein, Bazett correction, cardiovascular risk, inflammatory burden
MeSH terms
Cardiac Conduction System Disease, Adult, Aged, Arrhythmias, Cardiac, Arthritis, Rheumatoid, Electrocardiography, Female, Heart Conduction System, Heart Rate, Humans, Male, Middle Aged, Cytokines, Brugada Syndrome

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