Evidence map›Paper›PMID 32861197›Full record

ArticleEBioMedicine2020

Gut mycobiome and its interaction with diet, gut bacteria and alzheimer's disease markers in subjects with mild cognitive impairment: A pilot study.

Ravinder Nagpal, Bryan J Neth, Shaohua Wang, Sidharth P Mishra, Suzanne Craft, Hariom Yadav

Open access · goldAbstract read
In one paragraph

Article in EBioMedicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 116 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
116citing papers in PubMed, 6 pooled it
8.3field-weighted citation impact, top 1% of its field
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

116 citing papers in PubMed, 6 syntheses or guidelines pooled it, 192 citations in OpenAlex.

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56 more citing papers are in PubMed but not listed here.

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

6 authors at 2 institutions in 1 country.

Ravinder NagpalDepartment of Internal Medicine-Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States; Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, United States.
Bryan J NethDepartment of Internal Medicine- Gerontology and Geriatric Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States; Department of Neurology, Mayo Clinic, Rochester, MN, United States.
Shaohua WangDepartment of Internal Medicine-Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States; Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, United States.
Sidharth P MishraDepartment of Internal Medicine-Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States; Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, United States.
Suzanne CraftDepartment of Internal Medicine- Gerontology and Geriatric Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States. Electronic address: suzcraft@wakehealth.edu.
Hariom YadavDepartment of Internal Medicine-Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States; Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, United States. Electronic address: hyadav@wakehealth.edu.
Wake Forest University · USMayo Clinic in Arizona · US

Funding

Wake Forest Claude D. Pepper OAIC - RenewalP30AG021332 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI Denise Kathryn Houston · 2002 to 2026
$36.4M
Wake Forest Clinical and Translational Science AwardUL1TR001420 · NCATS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI ARD, JAMY D, FOLEY, KRISTIE L · 2015 to 2023
$32.3M
Wake Forest Alzheimer's Disease Core CenterP30AG049638 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI ESPELAND, MARK ANDREW · 2016 to 2020
$12.2M
Modified Ketogenic Diet Effects on Alzheimer's Disease Biomarkers and Cognition in Mild Cognitive ImpairmentR01AG055122 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI CRAFT, SUZANNE · 2017 to 2022
$5.2M
Exercise Intolerance in Older HFPEF PatientsR01AG018915 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI KITZMAN, DALANE W · 2001 to 2019
$5.2M
NCATS NIH HHS UL1 TR001420NIA NIH HHS P30 AG021332NIA NIH HHS P30 AG049638NIA NIH HHS R01 AG018915NIA NIH HHS R01 AG055122
6 · The paper itself

Abstract

backgroundRecently, we reported that patients with mild cognitive impairment (MCI) harbor specific signature of bacteria in their gut and that a modified Mediterranean ketogenic diet (MMKD) improves Alzheimer's disease (AD) markers in cerebrospinal fluid (CSF) and the signatures of gut bacteria. However, other microbial population such as gut fungi (mycobiome) in relation to MCI/AD pathology, gut bacteria and diet remain unknown.

methodsWe measure gut mycobiome by sequencing of the fungal rRNA ITS1 gene in 17 older adults (11 MCI; 6 cognitively normal [CN]) in a single-center, randomized, double-blind, crossover pilot study, before and after 6 weeks intervention of MMKD and American Heart Association Diet (AHAD), and determine its correlation with AD markers in CSF and gut bacteria.

findingsCompared to CN counterparts, patients with MCI have higher proportion of families Sclerotiniaceae, Phaffomyceteceae, Trichocomaceae, Cystofilobasidiaceae, Togniniaceae and genera Botrytis, Kazachstania, Phaeoacremonium and Cladosporium and lower abundance of Meyerozyma. Specific fungal taxa exhibit distinct correlation arrays with AD markers and gut bacteria in subjects with versus without MCI. MMKD induces broader effect on fungal diversity in subjects with MCI and increases Agaricus and Mrakia while decreasing Saccharomyces and Claviceps with differential response in subjects with or without MCI.

interpretationThe study reveals MCI-specific mycobiome signatures and demonstrates that distinct diets modulate the mycobiome in association with AD markers and fungal-bacterial co-regulation networks in patients with MCI. The findings corroborate the notion of considering gut mycobiome as a unique factor that can affect cognitive health/AD by interacting with gut bacteria and diet and facilitate better understanding of the AD and related microbiome, using unique diet or microbiome modulators.

Indexed as

BacteriaBiomarkersCognitive DysfunctionDietGastrointestinal MicrobiomeAlzheimer DiseaseApolipoprotein E4Computational BiologyDiet, KetogenicFecesFemaleFungiGenotypeHumansMaleMetagenomeApolipoprotein E4BiomarkersAlzheimer'samyloid peptidesDementiaFungiKetogenic dietMediterranean dietMicrobiomeMycobiotaNutritionShort-chain fatty acidstau

Identifiers

PMID32861197
PMCPMC7475073
OpenAlexW3081331242

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Registered trials

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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.