Document Detail

The expression of both peroxisome proliferator-activated receptor delta and cyclooxygenase-2 in tissues is associated with poor prognosis in colorectal cancer patients.
MedLine Citation:
PMID:  20824502     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: The role of peroxisome proliferator-activated receptor delta (PPAR δ) in the development and progression of colorectal cancer (CRC) remains controversial.
AIMS: We investigated the impact of PPAR δ expression in tissues on liver metastasis of CRC.
METHODS: We analyzed samples of primary CRC and matched normal adjacent tissues from 52 patients for the expression of PPAR δ, cyclooxygenase (COX)-2, vascular endothelial growth factor (VEGF)-A, and CXC chemokine receptor 4 (CXCR4). Correlations of the molecules expressions with clinical characteristics and prognosis of patients were studied.
RESULTS: The number of patients positive for PPAR δ, COX-2, CXCR4, and VEGF-A was 25, 33, 18, and 19, respectively. Among the PPAR δ (+)/COX-2 (+), PPAR δ (-)/COX-2 (+), PPAR δ (+)/COX-2 (-), and PPAR δ (-)/COX-2 (-) patient groups, PPAR δ (+)/COX-2 (+) patients had the highest incidence of liver metastasis (p < 0.01). PPAR δ (+)/COX-2 (+) expression was a significant independent prognostic factor (HR = 7.108, 95% CI 1.231-41.029, p = 0.0283) by Cox proportional analysis. PPAR δ (+)/COX-2 (+) patients had the highest positivity for CXCR4 or VEGF-A in tissues (p < 0.01). Among the patients in the CXCR4 (+)/VEGF-A (+), CXCR4 (+)/VEGF-A (-), CXCR4 (-)/VEGF-A (+), and CXCR4 (-)/VEGF-A (-) groups, CXCR4 (+)/VEGF-A (+) patients had the highest incidence of liver metastasis (p < 0.01).
CONCLUSIONS: The expression of both PPAR δ and COX-2 in tissues may lead to liver metastasis and consequent poor prognosis in CRC patients.
Masahiro Yoshinaga; Kentaro Taki; Shinichi Somada; Yumiko Sakiyama; Norihiko Kubo; Toyoma Kaku; Satoru Tsuruta; Tetsuya Kusumoto; Hironori Sakai; Kazuhiko Nakamura; Ryoichi Takayanagi; Yoichi Muto
Publication Detail:
Type:  Journal Article     Date:  2010-09-08
Journal Detail:
Title:  Digestive diseases and sciences     Volume:  56     ISSN:  1573-2568     ISO Abbreviation:  Dig. Dis. Sci.     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-03-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7902782     Medline TA:  Dig Dis Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1194-200     Citation Subset:  AIM; IM    
Department of Gastroenterology, Hepatology, and Nutrition, National Hospital Organization Beppu Medical Center, 1473 Uchikamado, Beppu, Oita, 874-0011, Japan,
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