Evidence map›Paper›PMID 32450885›Full record

ArticleGenome biology2020

Lifestyle and the presence of helminths is associated with gut microbiome composition in Cameroonians.

Meagan A Rubel, Arwa Abbas, Louis J Taylor, Andrew Connell, Ceylan Tanes, Kyle Bittinger, Valantine N Ndze, Julius Y Fonsah, Eric Ngwang, André Essiane and 4 more

Abstract readComparative Study
In one paragraph

Article in Genome biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 3 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

50 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  11. AdultCurrent research in parasitology & vector-borne diseases · 2026
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  18. Molecular epidemiology ofMicrobial genomics · 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

14 authors.

Meagan A RubelDepartment of Anthropology, University of Pennsylvania, Philadelphia, PA, 19104, USA.
Arwa AbbasDepartment of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
Louis J TaylorDepartment of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
Andrew ConnellDepartment of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
Ceylan TanesDivision of Gastroenterology, Hepatology, and Nutrition, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA.
Kyle BittingerDivision of Gastroenterology, Hepatology, and Nutrition, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA.
Valantine N NdzeJohns Hopkins Cameroon Program, Yaoundé, Cameroon.
Julius Y FonsahDepartment of Neurology, Faculty of Medicine and Biomedical Sciences, Yaoundé Central Hospital, Yaoundé, Cameroon.
Eric NgwangDepartment of Anthropology, Faculty of Arts, Letters and Social Sciences, University of Yaoundé I, PO Box 755, Yaoundé, Cameroon.
André EssianeMbalmayo District Hospital, Mbalmayo, Cameroon.
Charles FokunangDepartment of Pharmacotoxicology and Pharmacokinetics, Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon.
Alfred K NjamnshiDepartment of Neurology, Central Hospital Yaoundé, Yaoundé, Cameroon.
Frederic D BushmanDepartment of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA. bushman@pennmedicine.upenn.edu.
Sarah A TishkoffDepartment of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA. tishkoff@pennmedicine.upenn.edu.

Funding

Virus & Reservoirs CoreP30AI045008 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI ROBERT GROSS · 1999 to 2026
$78.6M
Clinical Risk Factors for Primary Graft DysfunctionR01HL087115 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI CHRISTIE, JASON D · 2007 to 2017
$7.1M
PARASITOLOGY: MODERN APPROACHEST32AI007532 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI HERBERT, DE'BROSKI R · 1998 to 2022
$5.0M
Human Respiratory Tract Microbiome in Health, HIV Infection and HIV Lung DiseaseU01HL098957 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI BUSHMAN, FREDERIC D, COLLMAN, RONALD G · 2009 to 2013
$3.9M
Lung Transplant Microbiome and Chronic Allograft DysfunctionR01HL113252 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI BUSHMAN, FREDERIC D, CHRISTIE, JASON D · 2013 to 2016
$2.9M
Integrative Genomics of Body Size and Metabolism in Ethnically Diverse AfricansR01GM113657 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI TISHKOFF, SARAH ANNE · 2015 to 2019
$2.8M
Integrative Genomic Analyses of Human Evolution and Adaptation in AfricaR35GM134957 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI TISHKOFF, SARAH ANNE · 2020 to 2024
$2.7M
Integrative nutrigenomic and metabolomic analyses of Africans with variable dietsR01DK104339 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI TISHKOFF, SARAH ANNE · 2015 to 2018
$1.4M
Mentored Patient Oriented Research in Lung TransplantationK24HL115354 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI CHRISTIE, JASON D · 2012 to 2021
$1.2M
The Lung DNA Virome in Health and DiseaseR61HL137063 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI BUSHMAN, FREDERIC D, COLLMAN, RONALD G · 2017 to 2018
$605k
NHLBI NIH HHS K24 HL115354NHLBI NIH HHS R01 HL087115NHLBI NIH HHS R01 HL113252NHLBI NIH HHS R61 HL137063NHLBI NIH HHS U01 HL098957NIAID NIH HHS P30 AI045008NIAID NIH HHS T32 AI007532NIDDK NIH HHS R01 DK104339NIGMS NIH HHS R01 GM113657NIGMS NIH HHS R35 GM134957NIH HHS 1R01DK104339-01NIH HHS 1R01GM113657-01)NIH HHS 5T32AI007532-18NIH HHS K24-HL115354NIH HHS R01-HL087115NIH HHS R01-HL113252NIH HHS R61-HL137063NIH HHS U01-HL098957
6 · The paper itself

Abstract

backgroundAfrican populations provide a unique opportunity to interrogate host-microbe co-evolution and its impact on adaptive phenotypes due to their genomic, phenotypic, and cultural diversity. We integrate gut microbiome 16S rRNA amplicon and shotgun metagenomic sequence data with quantification of pathogen burden and measures of immune parameters for 575 ethnically diverse Africans from Cameroon. Subjects followed pastoralist, agropastoralist, and hunter-gatherer lifestyles and were compared to an urban US population from Philadelphia.

resultsWe observe significant differences in gut microbiome composition across populations that correlate with subsistence strategy and country. After these, the variable most strongly associated with gut microbiome structure in Cameroonians is the presence of gut parasites. Hunter-gatherers have high frequencies of parasites relative to agropastoralists and pastoralists. Ascaris lumbricoides, Necator americanus, Trichuris trichiura, and Strongyloides stercoralis soil-transmitted helminths ("ANTS" parasites) significantly co-occur, and increased frequency of gut parasites correlates with increased gut microbial diversity. Gut microbiome composition predicts ANTS positivity with 80% accuracy. Colonization with ANTS, in turn, is associated with elevated levels of TH1, TH2, and proinflammatory cytokines, indicating an association with multiple immune mechanisms. The unprecedented size of this dataset allowed interrogation of additional questions-for example, we find that Fulani pastoralists, who consume high levels of milk, possess an enrichment of gut bacteria that catabolize galactose, an end product of lactose metabolism, and of bacteria that metabolize lipids.

conclusionsThese data document associations of bacterial microbiota and eukaryotic parasites with each other and with host immune responses; each of these is further correlated with subsistence practices.

Indexed as

Gastrointestinal MicrobiomeParasite LoadAnimalsCameroonDiet, PaleolithicFarmersHost-Parasite InteractionsHumansLife StyleMachine LearningMetagenomeNematodaRNA, Ribosomal, 16SRNA, Ribosomal, 16SDietGut microbiomeHelminthsHIVHunter-gatherersIndustrializationLactoseMetagenomic sequencingParasitesTH2

Identifiers

PMID32450885
PMCPMC7249393

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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.