Gut microbiome in elderly adults, Spain, cross-sectional
942 faecal samples from individuals aged 50 or older in Spain, analysed by shotgun metagenomics to study gut microbiota in relation to aging-associated factors, in a cross-sectional design. machine-written summary
942 samples · 942 runs · ES · Adult · 2026 · 2.53 Gbp / sample
Checked this project's papers and archive records yourself? Mark it human-verified.
what each source gave
| ✓ Sequence archive | 5,652 sample values (collection date, country, latitude, location region, longitude, subject id) |
| ○ Abstract / description | read; no usable statement |
| ○ Full text | read; no usable statement or table · PMC13378717 |
| ○ Supplementary tables | files read; no table could be matched to the samples |
| – External resources | not covered by the external resources we ingest |
| – User contribution | nothing uploaded yet |
| – Human verified | not yet checked by a person · I checked this project — verify it |
Genera, mean relative abundance over 930 profiled gut samples of this project (Sandpiper SingleM profiles, GTDB R232; low-depth and non-metagenome profiles left out).
| field | samples | coverage | R1 | R2 | R3 | R4 |
|---|---|---|---|---|---|---|
| age_category | 942 | 100% | ||||
| country | 942 | 100% | 942 | |||
| health_condition | 0 | 0% | ||||
| subject_id | 942 | 100% | 942 | |||
| collection_date | 942 | 100% | 942 | |||
| detailed_location | 942 | 100% | ||||
| latitude | 942 | 100% | 942 | |||
| location_region | 942 | 100% | 942 | |||
| longitude | 942 | 100% | 942 |
- Ecological restructuring of the nonbacterial fecal microbiome in obesity across human cohorts. 2026 PMID 42458961 PMC13378717 unsure
Archive description
Population observational study for the development of biomarkers of integral body image based on MRI in individuals 50 years of age or older and their relationship with factors in the biopsychosocial, cardiovascular, metabolomics, lipidomics, microbiomics, and other factors associated with aging. A total of 1015 subjects were recruited for cognitive tests and microbiota analysis. Faecal samples were collected from those subjects (n=942). For all samples, the metagenomic taxonomic and gene shot-gun analysis of the microbiota was carried out by a metagenomic approach, using a shotgun sequencing with the Illumina NextSeq with 150 bp x 2 chemistry.
How this project entered the registry
Classified as human gut / stool shotgun DNA metagenome of adult by deterministic_prior with confidence 0.90. Assay shotgun_dna.
- host external_curation.infant_catalog · “infant triage reason_code age_adult_only”
- body site study.description · “and microbiota analysis. Faecal samples were collected”
- body site external_curation.infant_catalog · “body_site_call gut”
- life stage external_curation.infant_catalog · “infant triage reason_code age_adult_only”
Evidence examples (one per field × route)
| sample | field | value | route | conf. | source | quote |
|---|---|---|---|---|---|---|
| SAMEA120812789 | collection_date | 2018 | R1 | 0.90 | biosample.attribute:collection_date | 2018 |
| SAMEA120812789 | country | ES | R1 | 0.90 | sample.attr.geographic_location_country_and_or_sea | Spain |
| SAMEA120812789 | latitude | 41.9831 | R1 | 0.90 | biosample.attribute:geographic_location_latitude+geographic_location_longitude | 41.98311 2.82493 |
| SAMEA120812789 | location_region | Catalonia | R1 | 0.60 | biosample.attribute:geographic_location_latitude+geographic_location_longitude | 41.98311 2.82493 |
| SAMEA120812789 | longitude | 2.8249 | R1 | 0.90 | biosample.attribute:geographic_location_latitude+geographic_location_longitude | 41.98311 2.82493 |
| SAMEA120812789 | subject_id | AI_Sample1 | R1 | 0.70 | sample.name_rule:description | DNA metagenome from subject AI_Sample1 |
Sequencing
942 runs over 942 samples · mean 2.70 Gbp per run (median 2.53 Gbp, total 2,545.28 Gbp; 942 runs with a base count) · layout PAIRED 942 · platform ILLUMINA 942 · models NextSeq 2000 (942) · 99% of runs with a Sandpiper profile · first public 2026-02-10
Authors (10)
Gallardo-Nuell L first · Rosell-Díaz M · Garre-Olmo J · Puig J · Ramos R · Pons J · Pérez-Brocal V · Moya A · Mayneris-Perxachs J · Fernández-Real JM last
Downloads
PRJEB104496.csv.gz (23.6 KB) · parquet (107.7 KB) — all 942 samples, every field with route and confidence · PRJEB104496_determinations.csv.gz (38.3 KB) — 5,652 evidence rows