Evidence map›Paper›PMID 33083922›Full record

ArticleSleep & breathing = Schlaf & Atmung2021

Circulating levels of cytokines are increased in restless legs syndrome.

Ferda Ilgen Uslu, Ervanur Demir, Eray Metin Güler, Abdürahim Koçyiğit

Abstract read
PubMed Publisher
In one paragraph

Article in Sleep & breathing = Schlaf & Atmung, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.5field-weighted citation impact, top 17% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Low 5HTJournal of neurochemistry · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Association between inflammatory cytokines and disease severity in restless legs syndrome.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
    Article
  8. Review
  9. International journal of molecular sciences · 2022
    Article
  10. Article
  11. Article
  12. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Ferda Ilgen UsluNeurology Department, Bezmialem Vakıf University Medical Faculty, İstanbul, Turkey. ferdailgen@yahoo.com.ORCID https://orcid.org/0000-0002-2124-5037
Ervanur DemirBezmialem Vakıf University Medical Faculty, İstanbul, Turkey.
Eray Metin GülerBiochemistry Department, Bezmialem Vakıf University Medical Faculty, İstanbul, Turkey.ORCID https://orcid.org/0000-0003-4351-1719
Abdürahim KoçyiğitBiochemistry Department, Bezmialem Vakıf University Medical Faculty, İstanbul, Turkey.ORCID https://orcid.org/0000-0003-2335-412X
Bezmiâlem Vakıf Üniversitesi · TR

Funding

Bezmiâlem Vakif Üniversitesi E6.2019/6
6 · The paper itself

Abstract

backgroundRestless legs syndrome [RLS] is known as a disease of iron and dopaminergic dysregulation but inflammatory processes might also have a role in the pathogenesis. In this study, we compared the circulating levels of hsCRP, IL-1β, IL-6, and TNF-α in patients with primary restless legs syndrome [RLS] and healthy control subjects.

methodsWe prospectively included 29 patients with primary RLS and 65 healthy controls [HC], all age-sex matched. The diagnosis of RLS was established using international guidelines. IRLSSG Severity Scale was used to evaluate the severity of RLS. Plasma levels of hsCRP, IL-1β, IL-6, and TNF-α were measured in all participants.

resultsThe mean age of patients was 37.8 ± 11.3 and 52% of RLS group were women. Serum IL-1β, IL-6, and TNF-α levels of the patient group were statistically significantly higher compared to HC [p < 0.001 for all variables]. Plasma levels of hsCRP did not differ between groups. There were 8 patients with mild RLS [28%], 13 patients with moderate RLS [45%], and 8 patients with severe RLS [28%]. Only IL-6 values were significantly different between the groups. In the severe group, the value of IL-6 was significantly higher than in the other groups [p: 0.03].

conclusionThese results showing higher circulating levels of inflammatory cytokines in patients with RLS support the notion that inflammation may be involved in the pathogenesis of primary RLS. However, it is necessary to perform further studies to determine if this finding is a cause or an effect.

Indexed as

Case-Control StudiesCytokinesFemaleHumansMaleMiddle AgedRestless Legs SyndromeCytokinesInterleukin-1βInterleukin-6Restless legs syndromeTNF-α

Identifiers

PMID33083922
OpenAlexW3093883396

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.