ABSTRACT
BACKGROUND/AIMS: The role of DHRS3 in human cancer remains unclear. Our study explored the role of DHRS3 in gastric cancer (GC) and its clinicopathological significance and associated mechanisms. MATERIALS: Bisulfite-assisted genomic sequencing PCR and a Mass-Array system were used to evaluate and quantify the methylation levels of the promoter. The expression levels and biological function of DHRS3 was examined by both in vitro and in vivo assays. A two-way hierarchical cluster analysis was used to classify the methylation profiles, and the correlation between the methylation status of the DHRS3 promoter and the clinicopathological characteristics of GC were then assessed. RESULTS: The DHRS3 promoter was hypermethylated in GC samples, while the mRNA and protein levels of DHRS3 were significantly downregulated. Ectopic expression of DHRS3 in GC cells inhibited cell proliferation and migration in vitro, decreased tumor growth in vivo. DHRS3 methylation was correlated with histological type and poor differentiation of tumors. GC patients with high degrees of CpG 9.10 methylation had shorter survival times than those with lower methylation. CONCLUSION: DHRS3 was hypermethylated and downregulated in GC patients. Reduced expression of DHRS3 is implicated in gastric carcinogenesis, which suggests DHRS3 is a tumor suppressor.
ABSTRACT
Objective To explore the correlation of Connexion43(Cx43),E-cadherin(E-cad)in breast infiltrating ductal carcinoma tis-sue. Methods The expressions of Cx43 and E-cad proteins were detected in 89 cases breast infiltrating ductal carcinoma tissue,48 cases partition groups. by immunohistochemistry Elivision method. Results The expressions of Cx43 and E-cad has a better consistency in the tumor area,the border area and far cancer area of breast infiltrating ductal carcinoma. For both the negative expression in tumor area same time,the rate of lymph node metastasis was highest. Conclusion Cx43 and E-cad in breast invasive ductal carcinoma has a certain synergy in the process of the occurrence and development,which related to its metastasis occurred.
ABSTRACT
Objective To explore the feasibility of laparoscopic subtotal cholecystectomy without using titanium clips.Methods Laparoscopic subtotal cholecystectomy was performed without using titanium clips on 48 patients,who had serious adhesions at the Calot's triangle.The cystic duct was ligated by silk.Results The operations were completed uneventfully in all the cases without converting to open surgery.No massive hemorrhage or biliary leakage occurred during the operation.The patients were followed up for 3 months to 3 years(mean,18 months),during which no one developed abdominal pain,fever,or jaundice.Conclusions Laparoscopic subtotal cholecystectomy without using titanium clips is a safe and simple method for patients with serious adhesions at the Calot's triangle.The rate of postoperative complications is low.
