Evidence map›Paper›PMID 35909117›Full record

ArticleBMC cardiovascular disorders2022

The blood microbiome and its association to cardiovascular disease mortality: case-cohort study.

Graeme Lawrence, Ingvild Midtervoll, Sven Ove Samuelsen, Anne Karin Kristoffersen, Morten Enersen, Lise Lund Håheim

Open access · goldAbstract read
In one paragraph

Article in BMC cardiovascular disorders, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

15 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
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  3. Pathological Alterations in Human Blood Microbiome-An Updated Review.International journal of molecular sciences · 2025
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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

6 authors at 1 institution in 1 country.

Graeme LawrenceDepartment of Mathematics, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway.
Ingvild MidtervollInstitute of Oral Biology, Faculty of Dentistry, University of Oslo, Blindern, P.O.B. 1052, 0316, Oslo, Norway.
Sven Ove SamuelsenDepartment of Mathematics, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway.
Anne Karin KristoffersenInstitute of Oral Biology, Faculty of Dentistry, University of Oslo, Blindern, P.O.B. 1052, 0316, Oslo, Norway.
Morten EnersenInstitute of Oral Biology, Faculty of Dentistry, University of Oslo, Blindern, P.O.B. 1052, 0316, Oslo, Norway.
Lise Lund HåheimInstitute of Oral Biology, Faculty of Dentistry, University of Oslo, Blindern, P.O.B. 1052, 0316, Oslo, Norway. a.l.l.haheim@odont.uio.no.ORCID 0000-0002-2012-6220
University of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLittle is known about the association between bacterial DNA in human blood and the risk of cardiovascular disease (CVD) mortality.

methodsA case-cohort study was performed based on a 9 ½ year follow-up of the Oslo II study from 2000. Eligible for this analysis were men born in 1923 and from 1926 to 1932. The cases were men (n = 227) who had died from CVD, and the controls were randomly selected participants from the same cohort (n = 178). Analysis of the bacterial microbiome was performed on stored frozen blood samples for both cases and controls. Association analyses for CVD mortality were performed by Cox proportional hazard regression adapted to the case-cohort design. We used the Bonferroni correction due to the many bacterial genera that were identified.

resultsBacterial DNA was identified in 372 (82%) of the blood samples and included 78 bacterial genera from six phyla. Three genera were significantly associated with CVD mortality. The genera Kocuria (adjusted hazard ratio (HR) 8.50, 95% confidence interval (CI) (4.05, 17.84)) and Enhydrobacter (HR 3.30 (2.01, 5.57)) indicate an association with CVD mortality with increasing levels. The genera Paracoccus (HR 0.29 (0.15, 0.57)) was inversely related. Significant predictors of CVD mortality were: the feeling of bad health; and the consumption of more than three cups of coffee per day. The following registered factors were borderline significant, namely: a history of heart failure; increased systolic blood pressure; and currently taking antihypertensive drugs now, versus previously.

conclusionsThe increasing levels of two bacterial genera Kocuria (skin and oral) and Enhydrobacter (skin) and low levels of Paracoccus (soil) were associated with CVD mortality independent of known risk factors for CVD.

Indexed as

Cardiovascular DiseasesMicrobiotaAged, 80 and overCohort StudiesDNA, BacterialFemaleHumansMaleProportional Hazards ModelsRisk FactorsDNA, Bacterial16SrRNABlood bacteriaCardiovascular diseaseCase-cohort studyMortalityProportional hazards regression

Identifiers

PMID35909117
PMCPMC9339179
OpenAlexW4288925027

What OpenQuestion holds

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LicenceCC BY
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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.