胃癌及癌前病变组织CD44V6表达的研究

目的:检测细胞粘附分子(CD44V6)在胃癌及癌前病变的表达,探索其与胃癌的发生、转移及预后的相关性.方法:用免疫组化方法检测30例浅表性胃炎,34例中重度萎缩性胃炎、34例不典型增生胃粘膜及64例胃癌组织中的CD44V6的表达.结果:CD44V6的阳性表达率在浅表性胃炎、中重度萎缩性胃炎、不典型增生胃粘膜及胃癌组织分别为3.33%(1/30)、14.71%(5/34)、44.12%(15/34)及60.94%(39/64).不典型增生及胃癌组阳性率明显高于浅表性胃炎组及中重度萎缩性胃炎组(均P＜0.01),中重度萎缩性胃炎与浅表性胃炎组比较差异无统计学意义;CD44V6的表达与胃癌的远处转移有关(P＜0.05),与TNM分期有关(P＜0.01),与淋巴结转移无关,与性别、肿瘤大小、大体类型、组织学分型、浸润深度间差异均无统计学意义.结论:用免疫组织化学方法检测胃活检标本中的CD44V6可能有助于胃癌早期诊断和远处转移趋势推测.     

TRIB3 Interacts With β-Catenin and TCF4 to Increase Stem Cell Features of Colorectal Cancer Stem Cells and Tumorigenesis

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Evaluation of P-POSSUM in Surgery for Obstructing Colorectal Cancer and Correlation of the Predicted Mortality With Different Surgical Options

PURPOSE This study examined the accuracy of Portsmouth Physiologic and Operative Severity Score for enUmeration of Mortality and Morbidity system (P-POSSUM) in predicting the mortality of patients who underwent operations for obstructing colorectal cancer. It also is attempted to analyze the actual mortality and the predicted P-POSSUM mortality of different surgical options for obstructing left-sided cancer.METHODS Data on patients who underwent surgery for obstructing colorectal cancer during 1998 to 2002 were collected. Mortality predicted by P-POSSUM was compared to the actual mortality with the method of linear analysis. The accuracy of using P-POSSUM to predict mortality in this group of patients was assessed by Hosmer and Lemeshow goodness of fit test and Receiver Operator Characteristic curve analysis. The predicted and actual mortality of patients who underwent different surgical options also were analyzed.RESULTS A total of 160 patients were included in the study and 18 patients died postoperatively. The operative mortality was 11.3 percent. P-POSSUM predicted overall mortality of 15 percent. The observed and predicted mortality was found to have no significant lack of fit (chi-squared = 5.98; degree of freedom = 3; P = 0.11). The area under Receiver Operator Characteristic curve analysis was 0.75. For patients with left-sided tumors, P-POSSUM predicted mortality and actual mortality of patients who had resection without anastomosis were both significantly higher than patients with single-stage resection and primary anastomosis ( P = 0.044 and 0.011, respectively).CONCLUSIONS P-POSSUM system is valid for prediction of overall mortality in patients with operations for obstructing colorectal cancer. Estimation of P-POSSUM predicted mortality during operation and its ability to correlate with choice of procedure is an area that is worth further study in emergency colorectal surgery.Reprints are not available.     

Acceptance of and Attitude Toward Genetic Testing for Hereditary Nonpolyposis Colorectal Cancer: A Comparison of Participants and Nonparticipants in Genetic Counseling

PURPOSE: Data on the actual uptake of genetic testing for hereditary nonpolyposis colorectal cancer (HNPCC) in a clinical sample is still inconclusive. The present study aimed to define the actual uptake of genetic counseling and testing offered to an unselected sample of 140 patients with colorectal cancer, fulfilling clinical criteria (Amsterdam or Bethesda) suggestive of HNPCC, and to identify demographic and psychosocial factors associated with the decision to participate in counseling. METHODS: Crosssectional survey. Eligible subjects had been consecutively enrolled in a regional tumor registry between 1994 and 1998, and were invited to attend an information session for HNPCC at the time genetic testing for HNPCC became available. Participants and nonparticipants in the information session completed a short questionnaire. RESULTS: The actual uptake rate of the information session in this sample was 26 percent. Participants and nonparticipants were comparable with regard to clinical criteria suggestive of HNPCC, awareness of the potential hereditary predisposition, and previous history of cancer in the family. Some 60 percent of participants experienced pronounced distress related to their potential inheritance of the disorder, compared to 35 percent among nonparticipants. Distress reached a clinically significant level in 28 percent of participants. Restricted communication within the family was observed frequently. Irrespective of groups, a positive attitude toward obtaining a gene test result predominated. CONCLUSIONS: Results suggest that expressed intention and attitude toward genetic testing do not reliably predict actual uptake of counseling or testing. Thorough interdisciplinary counseling should be provided to every patient with clinical criteria suggestive of HNPCC. The considerable distress related to the hereditary disorder should be adequately addressed, as should be communication issues.