Evidence mapPaperPMID 41775864Full record

ArticleCommunications medicine2026

Early-life immunological and microbial differences between East African and North European children.

Noora Nurminen, Yue-Mei Fan, Emma Kortekangas, Jake Lin, Lotta Hallamaa, Kenneth Maleta, Kirsi-Maarit Lehto, Olli H Laitinen, Aki Sinkkonen, Johanna Lempainen and 8 more

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Article in Communications medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

18 authors.

Noora NurminenFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.ORCID http://orcid.org/0000-0002-6798-7677
Yue-Mei FanFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.ORCID http://orcid.org/0000-0002-3241-6225
Emma KortekangasFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Jake LinFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.ORCID http://orcid.org/0000-0001-9928-1663
Lotta HallamaaFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Kenneth MaletaSchool of Global and Public Health, Kamuzu University of Health Sciences, Blantyre, Malawi.
Kirsi-Maarit LehtoFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.ORCID http://orcid.org/0000-0001-9028-0904
Olli H LaitinenFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Aki SinkkonenLuke, Natural Resources Institute Finland, Turku, Finland.
Johanna LempainenImmunogenetics Laboratory, Institute of Biomedicine, University of Turku, Turku, Finland.ORCID http://orcid.org/0000-0001-9893-1468
Jorma ToppariDepartment of Pediatrics, Turku University Hospital, University of Turku, Turku, Finland.ORCID http://orcid.org/0000-0003-2228-334X
Riitta VeijolaDepartment of Pediatrics, Research Unit of Clinical Medicine, Medical Research Centre, Oulu University Hospital, University of Oulu, Oulu, Finland.ORCID http://orcid.org/0000-0002-6557-270X
Kalle KurppaFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Mikael KnipDepartment of Pediatrics, Tampere University Hospital, Tampere, Finland.ORCID http://orcid.org/0000-0003-0474-0033
Ulla AshornFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Sami OikarinenFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Per AshornFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.ORCID http://orcid.org/0000-0003-2311-2593
Heikki HyötyFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland. heikki.hyoty@tuni.fi.ORCID http://orcid.org/0000-0003-0370-4145

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe urbanization of African populations adopting Westernized lifestyles might be connected to changes in microbial exposure and immune system activity that are harmful to health and increase the risk of non-communicable diseases, such as immune-mediated diseases. The study aims to compare microbial exposure, immune system markers, and gut microbiota between rural African and Westernized Northern European children to delineate whether there are differences present in these factors in early childhood.

methodsWe compared innate immune cytokines in plasma (IL-10, IL-6, IL-1β, and TNF-α) using Luminex, gut microbiota using 16S rRNA sequencing, and microbial infections using qPCR in early childhood longitudinal sample series of children from rural Africa (participants from the iLINS-DYAD-M study conducted in Malawi) and from Northern Europe (participants from the DIPP study conducted in Finland) to identify differences which could be associated with negative health outcomes in Westernized societies.

resultsHere, we show that the levels of plasma cytokines and frequency of stool pathogen positivity are substantially higher in Malawian than in Finnish children and that some of the cytokines differ in their longitudinal pattern between the two groups. Also, the diversity and composition of gut microbiota differ between the groups at the age of 6 months and diverge more with increasing age.

conclusionsThese results highlight the early emergence of differences in the immune system and gut microbiota between children living in extremities of the microbial exposure gradient. These differences add to the existing knowledge of possible factors contributing to increasing prevalence of chronic inflammatory diseases in African societies shifting towards more Westernized lifestyle.

Identifiers

PMID41775864
PMCPMC13076672

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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 Socratic graph.