Evidence map›Paper›PMID 33837203›Full record

Observational studyNature communications2021

A prevalent and culturable microbiota links ecological balance to clinical stability of the human lung after transplantation.

Sudip Das, Eric Bernasconi, Angela Koutsokera, Daniel-Adrien Wurlod, Vishwachi Tripathi, Germán Bonilla-Rosso, John-David Aubert, Marie-France Derkenne, Louis Mercier, Céline Pattaroni and 5 more

Abstract readObservational Study
In one paragraph

Observational study in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
–field-weighted citation impact
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

44 citing papers in PubMed.

  1. Journal of bacteriology · 2026
    Review
  2. Anellovirus-mediated interferon dysregulation enhances virus-induced lung injury.American journal of respiratory cell and molecular biology · 2026
    Article
  3. Review
  4. Article
  5. Myeloid cell reprogramming drives enhanced defense againstbioRxiv : the preprint server for biology · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Observational
  14. The lung microbiome in interstitial lung disease.Breathe (Sheffield, England) · 2025
    Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Definitions of Dysbiosis in Chronic Lung Allograft Dysfunction and High Bacterial Biomass.American journal of respiratory and critical care medicine · 2024
    Article
  20. Article
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

15 authors.

Sudip Das *Department of Fundamental Microbiology, Biophore, University of Lausanne, Lausanne, Switzerland.ORCID 0000-0002-3153-5951
Eric Bernasconi *Department of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland. eric.bernasconi@chuv.ch.ORCID 0000-0002-4641-1409
Angela KoutsokeraDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
Daniel-Adrien WurlodDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
Vishwachi TripathiDepartment of Fundamental Microbiology, Biophore, University of Lausanne, Lausanne, Switzerland.
Germán Bonilla-RossoDepartment of Fundamental Microbiology, Biophore, University of Lausanne, Lausanne, Switzerland.ORCID 0000-0003-0929-2890
John-David AubertDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.ORCID 0000-0001-8856-4000
Marie-France DerkenneDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
Louis MercierDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
Céline PattaroniDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
Alexis RapinDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.ORCID 0000-0003-3448-5459
Christophe von GarnierDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
Benjamin J MarslandDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.ORCID 0000-0003-1457-3160
Philipp EngelDepartment of Fundamental Microbiology, Biophore, University of Lausanne, Lausanne, Switzerland. philipp.engel@unil.ch.ORCID 0000-0002-4678-6200
Laurent P NicodDepartment of Respiratory Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.ORCID 0000-0002-0905-916X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is accumulating evidence that the lower airway microbiota impacts lung health. However, the link between microbial community composition and lung homeostasis remains elusive. We combine amplicon sequencing and bacterial culturing to characterize the viable bacterial community in 234 longitudinal bronchoalveolar lavage samples from 64 lung transplant recipients and establish links to viral loads, host gene expression, lung function, and transplant health. We find that the lung microbiota post-transplant can be categorized into four distinct compositional states, 'pneumotypes'. The predominant 'balanced' pneumotype is characterized by a diverse bacterial community with moderate viral loads, and host gene expression profiles suggesting immune tolerance. The other three pneumotypes are characterized by being either microbiota-depleted, or dominated by potential pathogens, and are linked to increased immune activity, lower respiratory function, and increased risks of infection and rejection. Collectively, our findings establish a link between the lung microbial ecosystem, human lung function, and clinical stability post-transplant.

Indexed as

AdultAllograftsBacteriaBacterial LoadBacteriological TechniquesBronchoalveolar Lavage FluidBronchoscopyDNA, BacterialFemaleGraft RejectionHumansImmune ToleranceLongitudinal StudiesLungLung TransplantationMaleDNA, BacterialRNA, Ribosomal, 16S

Identifiers

PMID33837203
PMCPMC8035266

What OpenQuestion holds

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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.