Evidence map›Paper›PMID 25197167›Full record

ArticleMediators of inflammation2014

Smoking is associated with reduced leptin and neuropeptide Y levels and higher pain experience in patients with fibromyalgia.

Maria I Bokarewa, Malin C Erlandsson, Jan Bjersing, Mats Dehlin, Kaisa Mannerkorpi

Open access · goldAbstract read
In one paragraph

Article in Mediators of inflammation, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 22% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Maria I BokarewaDepartment of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy at the University of Göteborg, P.O. Box 480, 405 30 Göteborg, Sweden.
Malin C ErlandssonDepartment of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy at the University of Göteborg, P.O. Box 480, 405 30 Göteborg, Sweden.
Jan BjersingDepartment of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy at the University of Göteborg, P.O. Box 480, 405 30 Göteborg, Sweden.ORCID 0000-0002-3538-1240
Mats DehlinDepartment of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy at the University of Göteborg, P.O. Box 480, 405 30 Göteborg, Sweden.ORCID 0000-0001-5165-0968
Kaisa MannerkorpiDepartment of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy at the University of Göteborg, P.O. Box 480, 405 30 Göteborg, Sweden.
University of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Smoking deregulates neuroendocrine responses to pain supporting production of neuropeptide Y (NpY) by direct stimulation of nicotinic receptors or by inhibiting adipokine leptin. Present study addressed the effect of cigarette smoking on adipokines and pain parameters, in 62 women with fibromyalgia (FM) pain syndrome with unknown etiology. Pain was characterized by a visual analogue scale, tender point (TP) counts, pressure pain threshold, and neuroendocrine markers NpY and substance P (sP). Levels of IGF-1, leptin, resistin, visfatin, and adiponectin were measured in blood and cerebrospinal fluid. Current smokers (n = 18) had lower levels of leptin compared to ex-smokers (n = 25, P = 0.002), while the expected NpY increase was absent in FM patients. In smokers, this was transcribed in higher VAS-pain (P = 0.04) and TP count (P = 0.03), lower pain threshold (P = 0.01), since NpY levels were directly related to the pain threshold (rho = 0.414) and inversely related to TP counts (rho = -0.375). This study shows that patients with FM have no increase of NpY levels in response to smoking despite the low levels of leptin. Deregulation of the balance between leptin and neuropeptide Y may be one of the essential mechanisms of chronic pain in FM.

Indexed as

AdultFemaleFibromyalgiaHumansLeptinMiddle AgedNeuropeptide YPainSmokingLeptinNeuropeptide Y

Identifiers

PMID25197167
PMCPMC4150510
OpenAlexW2170221967

What OpenQuestion holds

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LicenceCC BY
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.