Modified Mediterranean-ketogenic diet modulates gut microbiome and short-chain fatty acids in association with Alzheimer's disease markers in subjects with mild cognitive impairment/Experiment 1

From BugSigDB


Reviewed Marked as Reviewed by Svetlana up on 2024-5-28

Curated date: 2024/03/10

Curator: MyleeeA

Revision editor(s): MyleeeA, Scholastica

Subjects

Location of subjects
United States of America
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
Feces Cow dung,Cow pat,Droppings,Dung,Excrement,Excreta,Faeces,Fecal material,Fecal matter,Fewmet,Frass,Guano,Matières fécales@fr,Merde@fr,Ordure,Partie de la merde@fr,Piece of shit,Porción de mierda@es,Portion of dung,Portion of excrement,Portion of faeces,Portion of fecal material,Portion of fecal matter,Portion of feces,Portion of guano,Portion of scat,Portionem cacas,Scat,Spoor,Spraint,Stool,Teil der fäkalien@de,Feces,feces
Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
Cognitive impairment Abnormality of cognition,Cognitive abnormality,Cognitive defects,Cognitive deficits,Cognitive impairment,Intellectual impairment,cognitive impairment
Group 0 name Corresponds to the control (unexposed) group for case-control studies
Cognitive Normal
Group 1 name Corresponds to the case (exposed) group for case-control studies
Mild Cognitive Impairment
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
Participants diagnosed with early Mild Cognitive Impairment (diagnosed using ADNI-2 criteria) randomly assigned to either a modified Mediterranean-ketogenic diet (MMKD) or an American heart association diet (AHAD) group
Group 0 sample size Number of subjects in the control (unexposed) group
6
Group 1 sample size Number of subjects in the case (exposed) group
11
Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any)
None

Lab analysis

Sequencing type
16S
16S variable region One or more hypervariable region(s) of the bacterial 16S gene
V4
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)?
No
LDA Score above Threshold for the linear discriminant analysis (LDA) score for studies using the popular LEfSe tool
2

Alpha Diversity

Shannon Estimator of species richness and species evenness: more weight on species richness
unchanged
Chao1 Abundance-based estimator of species richness
unchanged
Richness Number of species
unchanged
Faith Phylogenetic diversity, takes into account phylogenetic distance of all taxa identified in a sample
unchanged

Signature 1

Reviewed Marked as Reviewed by Svetlana up on 2024-5-28

Curated date: 2024/03/10

Curator: MyleeeA

Revision editor(s): MyleeeA, Welile, Scholastica

Source: Fig. 1d-n and Result text

Description: Differences in the gut microbiome between subjects clinically diagnosed with mild cognitive impairment (MCI) versus cognitively normal (CN) counterparts.

Abundance in Group 1: increased abundance in Mild Cognitive Impairment

NCBI Quality ControlLinks
Coprococcus
Enterobacteriaceae
Phascolarctobacterium
Pseudomonadota
MogibacteriaceaeMogibacteriaceae

Revision editor(s): MyleeeA, Welile, Scholastica

Signature 2

Reviewed Marked as Reviewed by Svetlana up on 2024-5-28

Curated date: 2024/03/10

Curator: MyleeeA

Revision editor(s): MyleeeA, Scholastica

Source: Fig. 1d-n and Result text

Description: Differences in the gut microbiome between subjects clinically diagnosed with mild cognitive impairment (MCI) versus cognitively normal (CN) counterparts.

Abundance in Group 1: decreased abundance in Mild Cognitive Impairment

NCBI Quality ControlLinks
Dialister

Revision editor(s): MyleeeA, Scholastica