Carcinoembryonic antigen (CEA)was measured with ABC immunohistochemistry method in fourty-one gastric cancer tissues and sixty-six tissue from normal stomach and gastric benign lesions. The study revealed that the reactive signals in the former were ber than those in the latter. Simultaneously, CEA localized mainly in the cytoplasm or stroma in the cancerous tissue, but in normal gastric tissue or benign gastric lession, CEA distributed mainly in the margin of gland with gastric depression or membranous type. The result also revealed that the distribution patterns of ECA were linked with the cell growth types and infiltrating of gastric cancer. The authors consider that the expression state of CEA in gastric cancer is correlated with its biological behavior, and distribution patterns of CEA are more clinically significant than reactive intensities in the tissue. Patients have different prognosis with different CEA distribution patterns in tissue though their pathological types and TNM stages are the same.
ObjectiveTo study the preoperative evaluation value of serum tumor markers (CA72-4, CEA, CA199 and CA125) in patients with gastric cancer. MethodsSerum levels of tumor markers (CA72-4, CEA, CA199 and CA125) and clinical pathological data of 70 patients with gastric cancer before operation who underwent surgical treatment in the Gastrointestinal Surgery Department of Second Affiliated Hospital of Kunming Medical University in June 2013 to 2014 June were retrospectively analyzed. ResultsThere were some connection between the concentration of the serum CA72-4 and the tumor diameter, TNM staging, invasion depth, and the number of lymph node metastasis (P < 0.05), between CA199 and tumor size, TNM staging, and invasion depth (P < 0.05), between CEA, CA125 and tumor diameter, TNM staging and distant metastasis (P < 0.05), but the CA72-4, CA72-4, CEA and CA125 had nothing to do with patient' age and gender. ConclusionThe serum tumor markers of CA724, CEA, CA199, and CA125 have clinical application value in preoperative evaluation of gastric cancer.
ObjectiveTo systematically review the association between -765 G > C (rs20417) polymorphism of cyclooxygenase-2 (COX-2) gene and the risk of gastric cancer (GC). MethodsSuch databases as PubMed, EMbase, The Cochrane Library (Issue 10, 2015), CBM, CNKI, VIP and WanFang Data were searched from inception to October 2015 to collect case-control studies about the correlation between -765 G > C (rs20417) polymorphism of COX-2 gene and GC. Two reviewers independently screened literature, extracted data and evaluated the quality of included studies. Meta-analysis was performed using Stata 12.0 software. ResultsA total of 15 case-control studies were included in this meta-analysis, including 2 891 cases and 4 967 controls. Meta-analysis showed that the -765 G > C (rs20417) polymorphism was significantly associated with the risk of GC (OR=1.70, 95%CI 1.21 to 2.38, P=0.002). Subgroup analysis showed there was a significant association between the -765 G > C (rs20417) polymorphism and GC in Asians (OR=2.24, 95%CI 1.70 to 2.96, P=0.000); However, no association was found in the Caucasians and Americans. In the subgroup analysis by Helicobacter pylori (H. pylori) status, there were statistical significances between helicobacter pylori (+) and helicobacter pylori (-) with the risk of GC in COX-2 polymorphism of CC/CG vs. GG (OR=2.11, 95%CI 1.41 to 3.14, P < 0.001). ConclusionThe COX-2-765 G > C (rs20417) polymorphism may be significantly associated with an increased risk of GC, especially among Asians.