Evidence map›Paper›PMID 15836783›Full record

ArticleBMC cancer2005

Expression of a novel carbonic anhydrase, CA XIII, in normal and neoplastic colorectal mucosa.

Laura Kummola, Jonna M Hämäläinen, Jyrki Kivelä, Antti J Kivelä, Juha Saarnio, Tuomo Karttunen, Seppo Parkkila

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.3field-weighted citation impact, top 22% 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

23 citing papers in PubMed, 71 citations in OpenAlex.

  1. Article
  2. Carbonic Anhydrase Inhibitors in Oncology.Sub-cellular biochemistry · 2026
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  5. Different hypoxic response of humanTurkish journal of biology = Turk biyoloji dergisi · 2025
    Article
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  7. Article
  8. Carbonic anhydrases as disease markers.Expert opinion on therapeutic patents · 2019
    Review
  9. Review
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  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Acidic extracellular microenvironment and cancer.Cancer cell international · 2013
    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

7 authors at 4 institutions in 1 country.

Laura KummolaInstitute of Medical Technology, University of Tampere, and Tampere University Hospital, Tampere, Finland. laura.kummola@uta.fi
Jonna M Hämäläinen
Jyrki Kivelä
Antti J Kivelä
Juha Saarnio
Tuomo Karttunen
Seppo Parkkila
University of Oulu · FITampere University · FIHelsinki University Hospital · FITampere University Hospital · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCarbonic anhydrase (CA) isozymes may have an important role in cancer development. Some isozymes control pH homeostasis in tumors that appears to modulate the behaviour of cancer cells. CA XIII is the newest member of the CA gene family. It is a cytosolic isozyme which is expressed in a number of normal tissues. The present study was designed to investigate CA XIII expression in prospectively collected colorectal tumor samples.

methodsBoth neoplastic and normal tissue specimens were obtained from the same patients. The analyses were performed using CA XIII-specific antibodies and an immunohistochemical staining method. For comparison, the tissue sections were immunostained for other cytosolic isozymes, CA I and II.

resultsThe results indicated that the expression of CA XIII is down-regulated in tumor cells compared to the normal tissue. The lowest signal was detected in carcinoma samples. This pattern of expression was quite parallel for CA I and II.

conclusionThe down-regulation of cytosolic CA I, II and XIII in colorectal cancer may result from reduced levels of a common transcription factor or loss of closely linked CA1, CA2 and CA13 alleles on chromosome 8. Their possible role as tumor suppressors should be further evaluated.

Indexed as

Gene Expression Regulation, EnzymologicGene Expression Regulation, NeoplasticAdenocarcinomaAdenomaAllelesCarbonic Anhydrase ICarbonic Anhydrase IICarbonic AnhydrasesColonColorectal NeoplasmsCytosolDown-RegulationHumansHydrogen-Ion ConcentrationImmunohistochemistryIntestinal MucosaCA13 protein, humanCarbonic Anhydrase ICarbonic Anhydrase IICarbonic AnhydrasesProtein Isoforms

Identifiers

PMID15836783
PMCPMC1097719
OpenAlexW2130003397

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Registered trials

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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.