Cited by 82Rheumatoid Arthritis Research and TherapiesSleep and related disordersAutoimmune and Inflammatory Disorders Research

Sleep Disturbances and Interleukin 6 Receptor Inhibition in Rheumatoid Arthritis

Open access
FRAGIADAKI, KALLIOPI, TEKTONIDOU, MARIA G., KONSTA, MARIA, CHROUSOS, GEORGE P., SFIKAKIS, PETROS P.·2012·The Journal of Rheumatology

Abstract

Objective.: Interleukin 6 (IL-6)-mediated interactions have been associated with sleep disturbances in healthy subjects. In this pilot study we examined whether administration of the IL-6 receptor antagonist tocilizumab in patients with rheumatoid arthritis (RA) affects sleep disturbances. Methods.: Fifteen patients (13 women) with sleep disturbances at baseline received 6 monthly infusions of tocilizumab 8 mg/kg for moderately or severely active RA. Sleep quality was assessed by Pittsburgh Sleep Quality Index (PSQI), daytime sleepiness by Epworth Sleepiness Scale, disease activity by the 28-joint Disease Activity Score-erythrocyte sedimentation rate, functional disability by Health Assessment Questionnaire Disability Index (HAQ-DI), and fatigue by the Functional Assessment of Chronic Illness Therapy (FACIT-Fatigue Scale; FFS) at baseline and first, second, third, and sixth month of treatment. Medications used before enrollment remained unchanged during followup. Results.: Sleep quality improved and daytime sleepiness decreased significantly at first-month assessment (p < 0.00001 and p < 0.004, respectively, by repeated measurement analysis) compared to baseline, and these changes became more evident through 6 months. Disease activity decreased, fatigue decreased, and functional status improved significantly. Changes in PSQI score over time were not associated with the corresponding changes in DAS28-ESR (r = 0.37, p = 0.17), but correlated significantly with HAQ-DI changes (r = 0.60, p = 0.02) and marginally with changes in FFS scores (r = −0.46, p = 0.08). Conclusion.: Improvement of sleep quality after tocilizumab treatment in patients with RA does not appear to directly result from decreased disease activity, further suggesting that aberrant IL-6 regulation is associated with sleep disturbances.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.3899/jrheum.110617

Cites

16 of 16 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Increases of inflammatory markers accompany the process of aging, a phenomenon termed inflammaging.

    “Furthermore, increases of inflammatory markers accompany the process of aging, a phenomenon termed inflammaging (96, 197).”

    From The Sleep-Immune Crosstalk in Health and Disease (2019) · cites this paper as [197]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Louie GH, Tektonidou MG, Caban-Martinez AJ, Ward MM. Sleep disturbances in adults with arthritis: Prevalence, mediators, and subgroups at greatest risk. Arthritis Care Res 2011;63:247-60.
  2. Vgontzas AN, Zoumakis M, Bixler EO, Lin H-M, Follett H, Kales A, et al. Effects of one week of modest sleep restriction to 6 hours per night on daytime sleepiness, performance, IL-6, TNF, and cortisol plasma levels. J Clin Endocrinol Metab 2004;89:2119-26.

Cited by

Sorted by citations

Authors
FRAGIADAKI, K., TEKTONIDOU, M. G., KONSTA, M., CHROUSOS, G. P., & SFIKAKIS, P. P.
Affiliations
National and Kapodistrian University of Athens (GR)
Corresponding author
SFIKAKIS, PETROS P.
Venue
The Journal of Rheumatology
Published
2011-12-01
Volume
39
Issue
1
Pages
60-62
ISSN
  • 0315-162X (ISSN-L)
  • 1499-2752
OpenAlex
W2332021218
Cited by
82
References
16
Citations by year
2026: 3 · 2025: 2 · 2024: 6 · 2023: 7 · 2022: 6 · 2021: 4 · 2020: 5 · 2019: 7 · 2018: 4 · 2017: 4 · 2016: 4 · 2015: 11 · 2014: 6 · 2013: 9 · 2012: 3
FWCI
4.19
Type
journal article
Language
en
Open access
Locations
  • The Journal of Rheumatology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Rheumatology › Rheumatoid Arthritis Research and Therapies
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Health Sciences › Medicine › Hematology › Autoimmune and Inflammatory Disorders Research
Keywords
rheumatoid arthritis, sleep disorders, tocilizumab, IL-6 receptor inhibition, sleep quality, daytime sleepiness, fatigue, functional disability, disease activity, IL-6 signaling
MeSH terms
Adult, Aged, Arthritis, Rheumatoid, Female, Humans, Male, Middle Aged, Pilot Projects, Severity of Illness Index, Sleep Wake Disorders, Interleukin-6, Treatment Outcome, Antirheumatic Agents, Receptors, Interleukin-6, Antibodies, Monoclonal, Humanized

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review