Evidence map›Paper›PMID 34622234›Full record

ArticleCell reports. Medicine2021

Lower brown adipose tissue activity is associated with non-alcoholic fatty liver disease but not changes in the gut microbiota.

Basma A Ahmed, Frank J Ong, Nicole G Barra, Denis P Blondin, Elizabeth Gunn, Stephan M Oreskovich, Jake C Szamosi, Saad A Syed, Emily K Hutchings, Norman B Konyer and 14 more

Open access · goldAbstract read
In one paragraph

Article in Cell reports. Medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
6.2field-weighted citation impact, top 2% 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

37 citing papers in PubMed, 63 citations in OpenAlex.

  1. Fecal microbiota composition is related to brown adipose tissueJournal of endocrinological investigation · 2023
    Trial
  2. Article
  3. Article
  4. DietaryCurrent issues in molecular biology · 2026
    Article
  5. Article
  6. Review
  7. Herbal Combination ofFood science & nutrition · 2025
    Article
  8. MASH: the nexus of metabolism, inflammation, and fibrosis.The Journal of clinical investigation · 2025
    Review
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  17. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

24 authors at 5 institutions in 1 country.

Basma A AhmedCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Frank J OngCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Nicole G BarraCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Denis P BlondinFaculty of Medicine and Health Sciences, Department of Medicine, Division of Neurology, Centre de recherche du CHUS, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada.
Elizabeth GunnCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Stephan M OreskovichCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Jake C SzamosiFarncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON L8S 4L8, Canada.
Saad A SyedDepartment of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada.
Emily K HutchingsCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Norman B KonyerImaging Research Centre, St. Joseph's Healthcare, Hamilton, ON L8N 4A6, Canada.
Nina P SinghDepartment of Radiology, McMaster University, Hamilton, ON L8S 4L8, Canada.
Julian M YabutCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Eric M DesjardinsCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Fernando F AnhêCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Kevin P FoleyCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Alison C HollowayCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Michael D NoseworthyCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Francois HamanFaculty of Health Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
Andre C CarpentierDivision of Endocrinology, Department of Medicine, Centre de recherche du CHUS, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada.
Michael G SuretteCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Jonathan D SchertzerCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Zubin PunthakeeCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Gregory R SteinbergCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
Katherine M MorrisonCentre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON L8S 4L8, Canada.
McMaster University · CAPopulation Health Research Institute · CASt. Joseph’s Healthcare Hamilton · CAUniversité de Sherbrooke · CAUniversity of Ottawa · CA

Funding

CIHR 201709FDN-CEBA-116200CIHR FDN-154295
6 · The paper itself

Abstract

In rodents, lower brown adipose tissue (BAT) activity is associated with greater liver steatosis and changes in the gut microbiome. However, little is known about these relationships in humans. In adults (n = 60), we assessed hepatic fat and cold-stimulated BAT activity using magnetic resonance imaging and the gut microbiota with 16S sequencing. We transplanted gnotobiotic mice with feces from humans to assess the transferability of BAT activity through the microbiota. Individuals with NAFLD (n = 29) have lower BAT activity than those without, and BAT activity is inversely related to hepatic fat content. BAT activity is not related to the characteristics of the fecal microbiota and is not transmissible through fecal transplantation to mice. Thus, low BAT activity is associated with higher hepatic fat accumulation in human adults, but this does not appear to have been mediated through the gut microbiota.

Indexed as

Gastrointestinal MicrobiomeAdipose Tissue, BrownAdiposityAdolescentAdultAnimalsCold TemperatureFemaleHomeostasisHumansMaleMiceMice, Inbred C57BLMiddle AgedMultivariate AnalysisNon-alcoholic Fatty Liver Diseaseadult humansbrown adipose tissuecold exposurefecal transplantgerm-free micehepatic fatmagnetic resonance imagingmicrobiotanon-alcoholic fatty liver diseaseproton density fat fraction

Identifiers

PMID34622234
PMCPMC8484690
OpenAlexW3199798706

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.