Evidence map›Paper›PMID 32316935›Full record

ArticleBMC microbiology2020

Seasonal variation in gut microbiota composition: cross-sectional evidence from Ukrainian population.

Alexander Koliada, Vladyslav Moseiko, Mariana Romanenko, Liubov Piven, Oleh Lushchak, Nadiia Kryzhanovska, Vitaly Guryanov, Alexander Vaiserman

Abstract read
In one paragraph

Article in BMC microbiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

46 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  12. Seasonal Variation in HLA-B27 Associated Uveitis.Clinical & experimental ophthalmology · 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

8 authors.

Alexander KoliadaInstitute of Gerontology, Vyshgorodskaya st. 67, Kyiv, 04114, Ukraine.
Vladyslav MoseikoMolecular Genetic Laboratory Diagen, Kyiv, Ukraine.
Mariana RomanenkoInstitute of Gerontology, Vyshgorodskaya st. 67, Kyiv, 04114, Ukraine.
Liubov PivenInstitute of Gerontology, Vyshgorodskaya st. 67, Kyiv, 04114, Ukraine.
Oleh LushchakVasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine.
Nadiia KryzhanovskaPB MEDICOM-IN, Dnipro, Ukraine.
Vitaly GuryanovBogomolets National Medical University, Kyiv, Ukraine.
Alexander VaisermanInstitute of Gerontology, Vyshgorodskaya st. 67, Kyiv, 04114, Ukraine. vaiserman@geront.kiev.ua.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGut microbiota composition is known to depend on environmental (diet, day length, infections, xenobiotic exposure) and lifestyle (alcohol/drug intake, physical activity) factors. All these factors fluctuate seasonally, especially in areas with highly variable climatic conditions between seasons. Seasonal microbiota changes were reported in several previous studies. The purpose of our study was to investigate whether there is a seasonal variability in the gut microbiota composition in Ukrainian population. In contrast to previous studies performed on small-size samples using a longitudinal design, we used cross-sectional design with a large sample size (n = 769). Determination of microbial composition at the level of major microbial phyla was performed by qRT-PCR.

resultsThe relative abundance of major taxonomic groups of gut microbiota was found to be affected by month of sampling. Actinobacteria were more abundant and Bacteroidetes were less abundant in summer-derived samples compared to those obtained during other seasons, whereas Firmicutes content was seasonally independent. The Firmicutes to Bacteroidetes (F/B) ratio was significantly higher in summer-derived samples than in winter-derived ones. Odds to have F/B > 1 were 3.3 times higher in summer samples and 1.9 times higher in autumn samples than in winter ones; neither age, nor sex were significant confounding factors.

conclusionsSeasonality of sampling could influence results of human microbiome research, thereby potentially biasing estimates. This factor must be taken into consideration in further microbiome research.

Indexed as

AdolescentAdultBacteriaBerberine AlkaloidsChildChild, PreschoolCross-Sectional StudiesFecesFemaleGastrointestinal MicrobiomeHumansInfantInfant, NewbornLife StyleLongitudinal StudiesMaleBerberine AlkaloidsPhenanthridinesRNA, Ribosomal, 16SukrainDietGut microbiota compositionLifestyle factorsSeasonality of sampling

Identifiers

PMID32316935
PMCPMC7175530

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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.