Relationship of quantitative detection of human telomerase reverse transcriptase mRNA in peripheral and portal vein blood to liver metastasis and prognosis in colorectal cancer
10.3760/cma.j.issn.0254-1432.2015.04.003
- VernacularTitle:外周血和门静脉血人端粒酶反转录酶mRNA的定量检测与结直肠癌肝转移及预后的关系
- Author:
Shaoping LIU
;
Lei NIE
;
Yahua HU
;
Xianfeng ZHANG
;
Xiaolan HU
;
Chunhua FANG
- Publication Type:Journal Article
- Keywords:
Colorectal neoplasms;
Portal vein;
Telomerase;
RNA,messenger;
Liver metastasis;
Prognosis
- From:
Chinese Journal of Digestion
2015;35(4):225-230
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the correlation of the expression of human telomerase reverse transcriptase (hTERT) mRNA in peripheral and portal vein blood to liver metastasis and prognosis of patients with colorectal cancer (CRC).Methods From January 2009 to April 2011,a total of 181 patients diagnosed as primary CRC and received radical resection were enrolled.The relative quantitative expression of hTERT mRNA in preoperative peripheral blood and intraoperative portal vein blood were detected by real-time fluorescence quantitative reverse transcription-polymerase chain reaction (RT-PCR).All the patients were followed up for three years after operation.The relative quantitative expression of hTERT mRNA in peripheral blood before operation and intraoperative portal vein blood were compared between patients with synchronous liver metastasis (18 cases) and without synchronous liver metastasis (163 cases); between metachronous liver metastases (29 cases) and without metachronous liver metastases (152 cases).The relationship between the expression of hTERT mRNA in intraoperative portal vein blood and clinicopathological features of patients with CRC was analyzed.The t-test was used.Univariate and Multivariate Cox analysis were used for risk analysis of metachronous liver metastases.Log-rank test was used for comparisons of survival rate between the group with high hTERT mRNA expression in intraoperative portal vein blood during operation and the group with low expression.Results The relative quantitative expression of hTERT mRNA in preoperative peripheral blood and intraoperative portal vein blood in synchronous liver metastases group (8.04±3.79 and 11.88±4.19) was higher than that of no synchronous liver metastases group (4.30±2.81 and 4.94±3.37,t=5.159 and 8.084; both P＜0.01).The relative quantitative expression of hTERT mRNA in preoperative peripheral blood and intraoperative portal vein blood in metachronous liver metastases group (7.16±3.08 and 9.83 ± 2.96) was higher than that of no synchronous liver metastases group (4.11±2.58 and 4.56±3.09,t=5.648 and 8.467;both P＜0.01).The hTERT mRNA expression in intraoperative portal vein blood of patients with CRC changed significantly with the differentiated degree of tumor,tumor size,different invasion degree of tumor,lymph node metastasis,recurrence after operation,survival time (t =2.987,2.281,2.135,5.070,5.431 and 6.803,all P＜0.05).Univariate analysis revealed that the expression of hTERT mRNA in preoperative peripheral blood and intraoperative portal vein blood both were correlated with postoperative metachronous liver metastases (x2=9.522 and 16.393,both P＜0.01).Multivariate Cox analysis showed that both of them were independent risk factors (relative risk (RR)=4.286 and 9.783).The two-and three-year survival rates of the patients with high hTERT mRNA expression levels in intraoperative portal vein blood were 64.6 ％ and 52.3 ％,and those of low expression group were 91.4 ％ and 85.3 ％,and the differences between two groups in two-and three-year survival rate were statistically significant (x2 =5.313,P＜0.05; x2 =8.925,P＜0.01).Conclusions The expression of hTERT mRNA in intraoperative portal vein blood was closely correlated with the important pathologic features,prognosis and liver metastasis of patients with CRC and its predictive value of postoperative CRC metachronous liver metastases was higher than the expression of hTERT mRNA in preoperative peripheral blood.The hTERT mRNA in intraoperative portal vein blood can be a postoperative prognostic marker of patients with CRC.
