Evidence map›Paper›PMID 31378815›Full record

ArticleRheumatology (Oxford, England)2019

Gut microbiota alterations associated with reduced bone mineral density in older adults.

Mrinmoy Das, Owen Cronin, David M Keohane, Edel M Cormac, Helena Nugent, Michelle Nugent, Catherine Molloy, Paul W O'Toole, Fergus Shanahan, Michael G Molloy and 1 more

2 registry-linked trialsOpen access · bronzeAbstract read
In one paragraph

Article in Rheumatology (Oxford, England), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 116 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
116citing papers in PubMed, 5 pooled it
10.8field-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.

NCT05877261 completednot on this mapstarted 2023, after this paper: background citation

5 Year Follow-Up of Migration of a Cementless Total Knee Replacement

TypeobservationalSponsorLondon Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph'sRan2023 to 2024Enrolled18ConditionsKnee Arthroplasty, Total, Knee Osteoarthritis, Radiostereometric AnalysisArmsCementless Total Knee Replacement
NCT06525610 naunknown statusnot on this mapstarted 2024, after this paper: background citation

Assessment of Bone Displacement Under Loading Following Periprosthetic Fracture Repair With Weight-Bearing CT

TypeinterventionalSponsorLondon Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph'sRan2024 to 2025Enrolled21ConditionsPeriprosthetic Fracture Around Prosthetic Joint Implant KneeArmsPeriprosthetic Fracture Knee Repaired CT Scans
3 · Its place in the literature

Who cites it

116 citing papers in PubMed, 5 syntheses or guidelines pooled it, 175 citations in OpenAlex.

  1. Pooled it
  2. Gut microbiome and bone health: update on mechanisms, clinical correlations, and possible treatment strategies.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2025
    Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Trial
  7. Trial
  8. Article
  9. Links between bone fractures and the gut microbiota.Nature reviews. Endocrinology · 2026
    Review
  10. Review
  11. Osteogenic Effects ofFoods (Basel, Switzerland) · 2026
    Article
  12. Review
  13. Review
  14. Review
  15. Review
  16. Periodontal Disease and Osteoporosis: A Bidirectional Relationship.Advances in experimental medicine and biology · 2026
    Review
  17. Review
  18. Intermittent MDMA Attenuates Ovariectomy-induced Bone Loss via a Gut Microbiota-Bone Axis.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2025
    Article
  19. Article
  20. Review

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 1 institution in 2 countries.

Mrinmoy DasAPC Microbiome Ireland, Cork, Ireland.
Owen CroninDepartment of Medicine, University College Cork, Cork University Hospital, Cork, Ireland.
David M KeohaneDepartment of Medicine, University College Cork, Cork University Hospital, Cork, Ireland.
Edel M CormacAPC Microbiome Ireland, Cork, Ireland.
Helena NugentDepartment of Medicine, University College Cork, Cork University Hospital, Cork, Ireland.
Michelle NugentDepartment of Medicine, University College Cork, Cork University Hospital, Cork, Ireland.
Catherine MolloyDepartment of Medicine, University College Cork, Cork University Hospital, Cork, Ireland.
Paul W O'TooleAPC Microbiome Ireland, Cork, Ireland.
Fergus ShanahanAPC Microbiome Ireland, Cork, Ireland.
Michael G MolloyDepartment of Medicine, University College Cork, Cork University Hospital, Cork, Ireland.
Ian B JefferyAPC Microbiome Ireland, Cork, Ireland.
University College Cork · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo investigate compositional differences in the gut microbiota associated with bone homeostasis and fractures in a cohort of older adults.

methodsFaecal microbiota profiles were determined from 181 individuals with osteopenia (n = 61) or osteoporosis (n = 60), and an age- and gender-matched group with normal BMD (n = 60). Analysis of the 16S (V3-V4 region) amplicon dataset classified to the genus level was used to identify significantly differentially abundant taxa. Adjustments were made for potential confounding variables identified from the literature using several statistical models.

resultsWe identified six genera that were significantly altered in abundance in the osteoporosis or osteopenic groups compared with age- and gender-matched controls. A detailed study of microbiota associations with meta-data variables that included BMI, health status, diet and medication revealed that these meta-data explained 15-17% of the variance within the microbiota dataset. BMD measurements were significantly associated with alterations in the microbiota. After controlling for known biological confounders, five of the six taxa remained significant. Overall microbiota alpha diversity did not correlate to BMD in this study.

conclusionReduced BMD in osteopenia and osteoporosis is associated with an altered microbiota. These alterations may be useful as biomarkers or therapeutic targets in individuals at high risk of reductions in BMD. These observations will lead to a better understanding of the relationship between the microbiota and bone homeostasis.

Indexed as

Health StatusAbsorptiometry, PhotonAgedBone DensityFemaleGastrointestinal MicrobiomeGastrointestinal TractHumansMaleMiddle AgedOsteoporosisOsteoporotic Fracturesbone mineral densityelderlygut microbiotaosteopeniaosteoporosis

Identifiers

PMID31378815
PMCPMC6880854
OpenAlexW2966155190

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

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.