Yanomami skin microbiome complexity challenges prevailing concepts of healthy skin/Experiment 2

From BugSigDB


Needs review

Curated date: 2025/08/13

Curator: Ese

Revision editor(s): Ese

Subjects

Location of subjects
Venezuela
Host species Species from which microbiome was sampled. Contact us to have more species added.
Homo sapiens
Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology
Retroarticular Retroarticular,retroarticular
Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
Body composition measurement Body composition measurement,body composition measurement
Group 0 name Corresponds to the control (unexposed) group for case-control studies
western HMP
Group 1 name Corresponds to the case (exposed) group for case-control studies
adult Yanomami
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
Individuals from a remote Yanomami community in Venezuela, living a seminomadic hunter-gatherer lifestyle in the Amazon rainforest
Group 0 sample size Number of subjects in the control (unexposed) group
16
Group 1 sample size Number of subjects in the case (exposed) group
5

Lab analysis

Sequencing type
WMS
16S variable region One or more hypervariable region(s) of the bacterial 16S gene
Not specified
Sequencing platform Manufacturer and experimental platform used for quantifying microbial abundance
Illumina

Statistical Analysis

Data transformation Data transformation applied to microbial abundance measurements prior to differential abundance testing (if any).
relative abundances
Statistical test
LEfSe
Significance threshold p-value or FDR threshold used for differential abundance testing (if any)
0.05
MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?
Yes
LDA Score above Threshold for the linear discriminant analysis (LDA) score for studies using the popular LEfSe tool
2
Confounders controlled for Confounding factors that have been accounted for by stratification or model adjustment
age, Confounders controlled for: "body sites" is not in the list (abnormal glucose tolerance, acetaldehyde, acute graft vs. host disease, acute lymphoblastic leukemia, acute myeloid leukemia, adenoma, age, AIDS, alcohol consumption measurement, alcohol drinking, ...) of allowed values.body sites

Alpha Diversity

Shannon Estimator of species richness and species evenness: more weight on species richness
increased
Chao1 Abundance-based estimator of species richness
increased

Signature 1

Needs review

Curated date: 2025/08/13

Curator: Ese

Revision editor(s): Ese

Source: Figure 3B

Description: Most differential fungal taxa on retroauricular crease (RAC) of adult Yanomami and western HMP

Abundance in Group 1: increased abundance in adult Yanomami

NCBI Quality ControlLinks
Brettanomyces bruxellensis
Lasiodiplodia theobromae
Malassezia furfur
Malassezia globosa
Malassezia japonica
Microcyclospora tardicrescens

Revision editor(s): Ese

Signature 2

Needs review

Curated date: 2025/08/13

Curator: Ese

Revision editor(s): Ese

Source: Figure 3B

Description: Most differential fungal taxa on retroauricular crease (RAC) of adult Yanomami and western HMP

Abundance in Group 1: decreased abundance in adult Yanomami

NCBI Quality ControlLinks
Malassezia sp.

Revision editor(s): Ese