Evidence map›Paper›PMID 7974294›Full record

ArticleThorax1994

Heterogeneous expression and polymorphic genotype of glutathione S-transferases in human lung.

A M Cantlay, C A Smith, W A Wallace, P L Yap, D Lamb, D J Harrison

Open access · bronzeAbstract read
In one paragraph

Article in Thorax, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 21% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 82 citations in OpenAlex.

  1. Frontiers in genetics · 2023
    Pooled it
  2. Redox report : communications in free radical research · 2022
    Article
  3. Article
  4. Frontiers in molecular biosciences · 2021
    Article
  5. Article
  6. Article
  7. Article
  8. Biomarkers in Occupational Asthma.Current allergy and asthma reports · 2016
    Review
  9. Article
  10. Article
  11. Genetic variants in antioxidant genes are associated with diisocyanate-induced asthma.Toxicological sciences : an official journal of the Society of Toxicology · 2012
    Article
  12. Role of GSTM1 in resistance to lung inflammation.Free radical biology & medicine · 2012
    Review
  13. Article
  14. Article
  15. Article
  16. Smoking-Related Gene Expression in Laser Capture-Microdissected Human Lung.Clinical cancer research : an official journal of the American Association for Cancer Research · 2009
    Article
  17. Article
  18. Review
  19. 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

6 authors at 1 institution in 1 country.

A M CantlayDepartment of Pathology, Medical School, University of Edinburgh.
C A Smith
W A Wallace
P L Yap
D Lamb
D J Harrison
University of Edinburgh · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGlutathione S-transferases (GSTs) are involved in the detoxification of xenobiotics by conjugation with glutathione. One of the mu class genes of this superfamily of enzymes, GSTM1, is polymorphic because of a partial gene deletion. This results in a failure to express GSTM1 in approximately 50% of individuals. Several studies have linked GSTM1 null status to an increased risk of lung carcinoma. This study investigated the expression and distribution of GST isoenzymes in human lung, and developed a polymerase chain reaction (PCR) assay which would allow genotyping of archival, paraffin embedded lung tissue.

methodsDistribution was examined using a panel of polyclonal anti-GST antibodies for immunohistochemistry in normal tissue of 21 tumour-bearing lungs. DNA for PCR was extracted from paraffin blocks and a control group of 350 blood lysates. As a positive control each assay amplified part of GSTM4, a mu class gene which is not polymorphic but which shows strong sequence homology to GSTM1. The presence of GST in bronchoalveolar lavage fluid was sought by Western analysis.

resultsProximal airways contained pi class GST, alpha class GST, and mu class GST with expression concentrated in the brush border. In distal airspaces no alpha GST was expressed but pi GST and mu GST were present in alveolar cells and also alveolar macrophages. Pi class GST was present in bronchoalveolar lavage fluid. The PCR assay enabled genotypic determination using DNA extracted from archival material. Of the control group 56% were null at the GSTM1 locus.

conclusionsThe distribution of GST isoenzymes in the lung is heterogeneous with an apparent decrease in GST in distal lung. Since GSTM1 status has already been associated with susceptibility to disease, the PCR assay developed will allow further studies of the relation between genotype and structural disorders in the lung using archival pathological material.

Indexed as

Base SequenceBlotting, WesternBronchoalveolar Lavage FluidDNADNA PrimersGene DeletionGene Expression Regulation, EnzymologicGenotypeGlutathione TransferaseHumansImmunohistochemistryIsoenzymesLungLung NeoplasmsMolecular Sequence DataParaffin EmbeddingDNADNA PrimersGlutathione TransferaseIsoenzymes

Identifiers

PMID7974294
PMCPMC475239
OpenAlexW2070862181

What OpenQuestion holds

Textmetadata
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.