Evidence map›Paper›PMID 23781238›Full record

ArticleGastroenterology research and practice2013

ppENK Gene Methylation Status in the Development of Pancreatic Carcinoma.

Lixin Yang, Hong Yang, Jingnan Li, Jianyu Hao, Jiaming Qian

Open access · goldAbstract read
In one paragraph

Article in Gastroenterology research and practice, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 32% 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

4 citing papers in PubMed, 10 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Lixin YangDepartment of Gastroenterology, Beijing Chaoyang Hospital, Capital University of Medical Sciences, Beijing 100020, China.
Hong Yang
Jingnan Li
Jianyu Hao
Jiaming Qian
Peking Union Medical College Hospital · CNBeijing Chao-Yang Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective. To explore the association of hypermethylation of the proenkephalin gene (ppENK) with pancreatic carcinoma and to identify the effects of a demethylating agent on pancreatic cell lines. Method. Human pancreatic cancer tissues and five pancreatic carcinoma cell lines, as well as normal pancreatic tissue, were used. ppENK methylation status was detected by MS-PCR (methylation-specific PCR). Results. Methylation of ppENK was detected in 90.3% (28/31) of the human pancreatic carcinoma tissues but was not seen in normal pancreatic tissue. There was no correlation between the extent of methylation of ppENK and the clinicopathological features of the pancreatic carcinomas. Methylated ppENK was detected in all the pancreatic cancer cell lines and was associated with loss of mRNA expression in the pancreatic carcinoma cell lines and normal pancreatic tissue. After treatment with 5-aza-dC, methylated ppENK was not detected and the inhibition of ppENK mRNA expression was reversed. Conclusions. Inhibition of ppENK expression by a change in its methylation status plays an important role in pancreatic carcinogenesis. ppENK methylation is thus an important molecular event that distinguishes pancreatic carcinoma tissue from normal pancreatic tissue. Effects on cell growth, apoptosis, and the cell cycle may contribute to changes of ppENK methylation status.

Identifiers

PMID23781238
PMCPMC3679817
OpenAlexW1977624574

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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.