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Published in: BMC Gastroenterology 1/2017

Open Access 01-12-2017 | Research article

p53 expression in patients with ulcerative colitis - associated with dysplasia and carcinoma: a systematic meta-analysis

Authors: Xiaohong Lu, Yuanjie Yu, Shiyun Tan

Published in: BMC Gastroenterology | Issue 1/2017

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Abstract

Background

Tumor suppressor gene p53 expression has been reported in patients with ulcerative colitis (UC). However, the correlation between p53 expression and UC remains controversial. The aim of this meta-analysis was to investigate the association between p53 expression and different pathological types of UC.

Methods

Publications were searched in the PubMed, Embase, EBSCO, Wangfang, and CNKI databases. The overall odds ratios (ORs) and their corresponding 95% confidence intervals (95% CIs) were summarized in this study.

Results

Final 19 papers were identified in this meta-analysis, including 1068 patients with UC and 130 normal tissue samples. Immunohistochemical p53 expression was significantly higher in UC without dysplasia and carcinoma (UC group) compared to normal tissue samples (OR = 3.14, P = 0.001), higher in UC with dysplasia than in UC group (OR = 10.76, P < 0.001), and higher in UC with colorectal cancer (CRC) than in UC with dysplasia (OR = 1.69, P = 0.035). Subgroup analysis of ethnicity (UC group vs. normal tissues) showed that p53 expression was correlated with UC in Asians, but not in Caucasians. When UC with dysplasia was compared to UC group, p53 expression was linked to UC with dysplasia among both Asians and Caucasians. When UC-CRC was compared to UC with dysplasia, p53 expression was not associated with UC-CRC in both Caucasians and Asians.

Conclusions

p53 expression was closely associated with UC-CRC development. p53 expression showed different ethnic characteristics among different pathological types of UC.
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Metadata
Title
p53 expression in patients with ulcerative colitis - associated with dysplasia and carcinoma: a systematic meta-analysis
Authors
Xiaohong Lu
Yuanjie Yu
Shiyun Tan
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Gastroenterology / Issue 1/2017
Electronic ISSN: 1471-230X
DOI
https://doi.org/10.1186/s12876-017-0665-y

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