Evidence map›Paper›PMID 23801879›Full record

ArticleInternational journal of medical sciences2013

C-reactive protein and serum amyloid a overexpression in lung tissues of chronic obstructive pulmonary disease patients: a case-control study.

Jose Luis López-Campos, Carmen Calero, Belén Rojano, Marta López-Porras, Javier Sáenz-Coronilla, Ana I Blanco, Verónica Sánchez-López, Daniela Tobar, Ana Montes-Worboys, Elena Arellano

Open access · goldAbstract read
In one paragraph

Article in International journal of medical sciences, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

22 citing papers in PubMed, 30 citations in OpenAlex.

  1. Trial
  2. SAA4: An Underdog Within the Serum Amyloid a Superfamily?International journal of molecular sciences · 2026
    Review
  3. Mechanisms and markers of lung ageing in health and disease.European respiratory review : an official journal of the European Respiratory Society · 2025
    Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Inhibition of C-X-C Motif Chemokine 10 (CXCL10) Protects Mice from Cigarette Smoke-Induced Chronic Obstructive Pulmonary Disease.Medical science monitor : international medical journal of experimental and clinical research · 2018
    Article
  15. Serum amyloid A: an ozone-induced circulating factor with potentially important functions in the lung-brain axis.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2017
    Article
  16. Article
  17. Article
  18. Lipoxins: nature's way to resolve inflammation.Journal of inflammation research · 2015
    Review
  19. Article
  20. SAA drives proinflammatory heterotypic macrophage differentiation in the lung via CSF-1R-dependent signaling.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2014
    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

10 authors at 3 institutions in 1 country.

Jose Luis López-CamposUnidad Medico-Quirurgica de Enfermedades Respiratorias. Hospital Universitario Virgen del Rocio, Seville, Spain. lcampos@separ.es
Carmen Calero
Belén Rojano
Marta López-Porras
Javier Sáenz-Coronilla
Ana I Blanco
Verónica Sánchez-López
Daniela Tobar
Ana Montes-Worboys
Elena Arellano
Hospital Universitario Virgen del Rocío · ESInstituto de Biomedicina de Sevilla · ESCentro de Investigación Biomédica en Red de Enfermedades Respiratorias · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough researchers have consistently demonstrated systemic inflammation in chronic obstructive pulmonary disease (COPD), its origin is yet unknown. We aimed to compare the lung bronchial and parenchymal tissues as potential sources of major acute-phase reactants in COPD patients and resistant smokers.

methodsConsecutive patients undergoing elective surgery for suspected primary lung cancer were considered for the study. Patients were categorized as COPD or resistant smokers according to their spirometric results. Lung parenchyma and bronchus sections distant from the primary lesion were obtained. C-reactive protein (CRP) and serum amyloid A (SAA1, SAA2 and SAA4) gene expressions were evaluated by RT-PCR. Protein levels were evaluated in paraffin embedded lung tissues by immunohistochemistry and in serum samples by nephelometry.

resultsOur study included 85 patients with COPD and 87 resistant smokers. In bronchial and parenchymal tissues, both CRP and SAA were overexpressed in COPD patients. In the bronchus, CRP, SAA1, SAA2, and SA4 gene expressions in COPD patients were 1.89-fold, 4.36-fold, 3.65-fold, and 3.9-fold the control values, respectively. In the parenchyma, CRP, SAA1, and SAA2 gene expressions were 2.41-, 1.97-, and 1.76-fold the control values, respectively. Immunohistochemistry showed an over-stained pattern of these markers on endovascular cells of COPD patients. There was no correlation with serum protein concentration.

conclusionsThese results indicate an overexpression of CRP and SAA in both bronchial and parenchymal tissue in COPD, which differs between both locations, indicating tissue/cell type specificity. The endothelial cells might play a role in the production of theses markers.

Indexed as

AgedBase SequenceCase-Control StudiesC-Reactive ProteinDNA PrimersFemaleHumansLungMaleMiddle AgedPulmonary Disease, Chronic ObstructiveReverse Transcriptase Polymerase Chain ReactionSerum Amyloid A ProteinC-Reactive ProteinDNA PrimersSerum Amyloid A ProteinCOPDC-reactive proteingene expressionimmunohistochemistry.Serum Amyloid A

Identifiers

PMID23801879
PMCPMC3691791
OpenAlexW2079489596

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.