Evidence map›Paper›PMID 21459756›Full record

ArticleCarcinogenesis2011

Butyrate suppresses mRNA increase of osteopontin and cyclooxygenase-2 in human colon tumor tissue.

F Jahns, A Wilhelm, N Jablonowski, H Mothes, Mariya Radeva, A Wölfert, K O Greulich, M Glei

Open access · bronzeAbstract read
In one paragraph

Article in Carcinogenesis, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 12% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
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  3. Review
  4. Article
  5. Article
  6. DietaryFrontiers in veterinary science · 2022
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  11. Review
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  13. Article
  14. Intake ofEuroasian journal of hepato-gastroenterology
    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

8 authors at 2 institutions in 1 country.

F JahnsDepartment of Nutritional Toxicology, Institute of Nutrition, Friedrich-Schiller-University Jena, Dornburger Straße 24, 07743 Jena, Germany. franziskajahns@aol.com
A Wilhelm
N Jablonowski
H Mothes
Mariya Radeva
A Wölfert
K O Greulich
M Glei
Friedrich Schiller University Jena · DELeibniz Association · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The short chain fatty acid (SCFA) butyrate, a product of fermentation of dietary fiber in the human colon, is found to exert multiple regulatory processes in colon carcinogenesis. The aim of this study was to find out whether butyrate affects the tumor-promoting genes osteopontin (OPN) and cyclooxygenase (COX)-2, their respective proteins and/or their functional activity in matched normal, adenoma and tumor colon tissues obtained from 20 individuals at colon cancer surgery. Quantitative real-time polymerase chain reaction experiments showed increased levels of OPN and COX-2 messenger RNA in tumor tissues when compared with the adjacent normal samples (P < 0.001). The addition of butyrate reduced OPN and COX-2 mRNA expression in all tissue types compared with the related medium controls (tumor: P < 0.05). In tumor samples, a downregulation of up to median 35% (COX-2) and 50% (OPN) was observed, respectively. Thereby, tumors with lower levels of OPN basal expression were more sensitive to inhibition and vice versa for COX-2 in normal tissue. At the protein and enzyme level, which were determined by using western blot and enzyme immunometric assays, the impact of the SCFA was not clearly visible anymore. The active proteins of OPN and COX-2 (determined by prostaglandin E(2)) were found to correlate with their respective mRNA expression only in 50-63% of analyzed donors. For the first time, our data reveal new insights into the chemoprotective potential of butyrate by showing the suppression of OPN and COX-2 mRNA in primary human colon tissue with the strongest effects observed in tumors.

Indexed as

AdenomaAgedBlotting, WesternButyratesCarcinogensColorectal NeoplasmsCyclooxygenase 2FemaleHumansMaleOsteopontinReverse Transcriptase Polymerase Chain ReactionRNA, MessengerButyratesCarcinogensCyclooxygenase 2OsteopontinPTGS2 protein, humanRNA, Messenger

Identifiers

PMID21459756
PMCPMC3314284
OpenAlexW2112934110

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.