Evidence map›Paper›PMID 27869108›Full record

ArticleJournal of breath research2016

Limonene in exhaled breath is elevated in hepatic encephalopathy.

M E O'Hara, R Fernández Del Río, A Holt, P Pemberton, T Shah, T Whitehouse, C A Mayhew

Open access · hybridAbstract read
In one paragraph

Article in Journal of breath research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 17% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 citations in OpenAlex.

  1. Pooled it
  2. Breath volatile profiling reveals a diagnostic signature of MASLD in children.medRxiv : the preprint server for health sciences · 2026
    Article
  3. Systematic comparison of methods for offline breath sampling.Analytical and bioanalytical chemistry · 2025
    Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Breath BiopsyJournal of clinical and translational hepatology · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Breath Biomarkers in Diagnostic Applications.Molecules (Basel, Switzerland) · 2021
    Review
  16. Review
  17. Review
  18. Observational
  19. Article
  20. [Modern breath analysis].Medizinische Klinik, Intensivmedizin und Notfallmedizin · 2019
    Review
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

7 authors at 1 institution in 2 countries.

M E O'HaraSchool of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK. Author to whom any correspondence should be addressed.
R Fernández Del Río
A Holt
P Pemberton
T Shah
T Whitehouse
C A Mayhew
University of Birmingham · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

Breath samples were taken from 31 patients with liver disease and 30 controls in a clinical setting and proton transfer reaction quadrupole mass spectrometry (PTR-Quad-MS) used to measure the concentration of volatile organic compounds (VOCs). All patients had cirrhosis of various etiologies, with some also suffering from hepatocellular cancer (HCC) and/or hepatic encephalopathy (HE). Breath limonene was higher in patients with No-HCC than with HCC, median (lower/upper quartile) 14.2 (7.2/60.1) versus 3.6 (2.0/13.7) and 1.5 (1.1/2.3) nmol mol

Indexed as

AdultAgedBreath TestsCyclohexenesExhalationFemaleHepatic EncephalopathyHumansLimoneneMaleMiddle AgedTerpenesVolatile Organic CompoundsCyclohexenesLimoneneTerpenesVolatile Organic Compounds

Identifiers

PMID27869108
PMCPMC5500822
OpenAlexW2552679987

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.