Evidence map›Paper›PMID 25133672›Full record

ArticlePloS one2014

Modifying effect of a common polymorphism in the interleukin-6 promoter on the relationship between long-term exposure to traffic-related particulate matter and heart rate variability.

Martin Adam, Medea Imboden, Eva Boes, Emmanuel Schaffner, Nino Künzli, Harish Chandra Phuleria, Florian Kronenberg, Jean-Michel Gaspoz, David Carballo, Nicole Probst-Hensch

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.8field-weighted citation impact, top 18% 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

9 citing papers in PubMed, 13 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

10 authors at 4 institutions in 2 countries.

Martin AdamSwiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland.
Medea ImbodenSwiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland.
Eva BoesSwiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland; Division of Genetic Epidemiology, Department of Medical Genetics, Molecular and Clinical Pharmacology, Innsbruck Medical University, Innsbruck, Austria.
Emmanuel SchaffnerSwiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland.
Nino KünzliSwiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland.
Harish Chandra PhuleriaSwiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland.
Florian KronenbergDivision of Genetic Epidemiology, Department of Medical Genetics, Molecular and Clinical Pharmacology, Innsbruck Medical University, Innsbruck, Austria.
Jean-Michel GaspozDepartment of Community Medicine, Primary Care and Emergency medicine, University Hospitals, Geneva, Switzerland.
David CarballoCardiology, Department of Internal Medicine Specialties, University Hospitals, Geneva, Switzerland.
Nicole Probst-HenschSwiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland.
Swiss Tropical and Public Health Institute · CHInnsbruck Medical University · ATUniversity Hospital of Geneva · CHUniversity of Basel · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExposure to particulate matter (PM) has been associated with an increase in many inflammatory markers, including interleukin 6 (IL6). Air pollution exposure has also been suggested to induce an imbalance in the autonomic nervous system (ANS), such as a decrease in heart rate variability (HRV). In this study we aimed to investigate the modifying effect of polymorphisms in a major proinflammatory marker gene, interleukin 6 (IL6), on the relationship between long-term exposure to traffic-related PM10 (TPM10) and HRV.

methodsFor this cross-sectional study we analysed 1552 participants of the SAPALDIA cohort aged 50 years and older. Included were persons with valid genotype data, who underwent ambulatory 24-hr electrocardiogram monitoring, and reported on medical history and lifestyle. Main effects of annual average TPM10 and IL6 gene variants (rs1800795; rs2069827; rs2069840; rs10242595) on HRV indices and their interaction with average annual exposure to TPM10 were tested, applying a multivariable mixed linear model.

resultsNo overall association of TPM10 on HRV was found. Carriers of two proinflammatory G-alleles of the functional IL6 -174 G/C (rs1800795) polymorphism exhibited lower HRV. An inverse association between a 1 µg/m3 increment in yearly averaged TPM10 and HRV was restricted to GG genotypes at this locus with a standard deviation of normal-to-normal intervals (SDNN) (GG-carriers: -1.8%; 95% confidence interval -3.5 to 0.01; pinteraction(additive) = 0.028); and low frequency power (LF) (GG-carriers: -5.7%; 95%CI: -10.4 to -0.8; pinteraction(dominant) = 0.049).

conclusionsOur results are consistent with the hypothesis that traffic-related air pollution decreases heart rate variability through inflammatory mechanisms.

Indexed as

AgedAutonomic Nervous SystemCross-Sectional StudiesElectrocardiographyFemaleGenotypeHeart RateHumansInterleukin-6MaleMiddle AgedParticulate MatterPolymorphism, GeneticPromoter Regions, GeneticInterleukin-6Particulate Matter

Identifiers

PMID25133672
PMCPMC4136824
OpenAlexW2130990577

What OpenQuestion holds

Textmetadata
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.