The Relationship Between Expression of EpCAM Cancer Stem Cell Marker with Histopathological Grading, Lymphovascular Invasion, and Metastases in Colorectal Adenocarcinoma

OBJECTIVE

The aim of this study was to analyze the expression of EpCAM in the colorectal adenocarcinoma.

MATERIAL AND METHODS

This study used a cross-sectional design. One hundred and thirteen paraffin embedded block of Colorectal Adenocarcinoma were assessed using anti-EpCAM/Epithelial Specific Antigen (Ber-EP4) mouse monoclonal antibody and their expression were performed using Olympus CX-43 light microscope. The relationship between EpCAM expression with histopathological grade of colorectal adenocarcinoma, lymphovascular invasion and metastases ability were statistically analyzed by Chi-Square tests and presented in tables using SPSS 18.

RESULTS

From 113 samples, in samples with lymphovascular invasion there were 37 samples (32.7%) with strong expression, while those with weak expression were 19 samples (16.8%). There were 39 samples with metastases and strong expression of EpCAM (34.5%), while 21 samples with weak expression (18.6%). There was a significant relationship between the expression of cancer stem cell marker EpCAM with lymphovascular invasion and colorectal adenocarcinoma metastases (p = 0.002), but there was no significant relationship with histopathological grade (p = 0.574).

CONCLUSION

The EpCAM expression can be used as a prognostic factor, and can be considered as a predictive or an option for target therapy in colorectal adenocarcinoma.

Family with Peutz-Jeghers syndrome in Indonesia

Peutz-Jeghers syndrome (PJS) is a rare autosomal dominant disorder characterised by mucocutaneous pigmentation, gastrointestinal polyps and an increased risk of gastrointestinal and other cancers. We report an Indonesian woman, aged 28, with black spots on her lips who had multiple polyps extending from the stomach to the rectum. Her father and a son also had mucocutaneous lesions but they did not undergo gastrointestinal investigations. All three had mutations in the serine/threonine kinase 11 gene (STK11).

Endoglin Expression (CD105) in Ephithelial Ovarian Cancer

Abstract Objective: Endoglin ( CD105 ) is one of the factors that play a role in vascular development , angiogenesis and vascular homeostasis. The aim of this research is to address the endoglin expression (CD105) in primary tumor and metastasis tumor (omentum) and their relation with clinicopathological factor: stadium, differentiation level, and histological epithelial ovarian cancer. Method: The research was performed at Public Service Hall of Dr. Wahidin Sudirohusodo Hospital and educational networking hospital of Obstetrics and Gynecology Departement of Medical Faculty Hasanuddin University Makassar. The research design is cross sectional with 55 samples consisting of 55 samples of primary tumor and 55 matastasis tumor. Imunohistochemistry examination was performed to all samples. Result:The results show a significant relation between endoglin (CD105) at omentum metastasis tumor and stadium and cell differentiation level of epithelial ovarian cancer. There is no significant relation between endoglin (CD105) expression at primary tumor of ovarian cancer and stadium and differentiation and type of histopathological cell. In addition, there is no significant relation between endoglin expression (CD105) at omentum metastasis tumor and type of histophatological cell of ovarian cancer. There is a significant correlation (strong category) between endoglin expression at omentum metastasis tumor and endoglin expression at primary tumor of epithelial ovarian cancer. Conclusion: Endoglin expression in ovarian cancer metastatic tumor to omentum is correlated to clinical stage and differentiation level of ovarian cancer. And endoglin is one of the pro angiogenic and pro metastasis factors. Keywords:epithelial ovarian cancer, endoglin expression, CD105, immunohistochemistry  

The role of xenobotic metabolism MGST1 gene polymorphism in colorectal cancer patients

AIM

to asses the role of Microsomal Glutathione S-Transferase1 (MGST1) gene as one of enzym metabolism that plays in enviromental factor.

METHODS

using case-control study, subjects with age less than 50 years were collected from teaching hospital Makassar between 2008-2010. Frozen or routinely processed tumour samples biopsy and peripheral blood were obtained from 35 CRC patients undergoing surgery and endoscopic examination with 61 subject as control. CRC cases were diagnosis by clinical examination and confirm by histopathology without familial aggregation of CRC. DNA resequencing was conducted for the 3 kb genomic DNA region MGST1 using PCR-restriction fragment length polymorphism (PCR-RFLP).

RESULTS

from 96 subject, two varian single nucleotide polymorphisms (SNPs) 16454T>G and 16416G>A MGST1 were identified. Significant CRC association (p= 0.047) was detected in GG genotipe SNP 16454T>G MGST1 with 3.5 fold risk (95% confidence interval (CI) 0.962-13.191).

CONCLUSION

the results suggest that MGST1 gene polymorphisms as one of environment gene may contribute to CRC risk in younger age (<50 years old).

Association of high expression of CD44 in clinicopathological factors of endometrial cancer

BACKGROUND

Clinical stages, histologic type, degree of cell differentiation, myometrial invasion, and lymph-vascular space invasion (LVSI) have been identified as clinicopathological factors that are predictive for endometrial cancer, however, further prognostic indicators are still required to account for the heterogeneity of this cancer. Adhesion molecule CD44, affects the invasion, metastasis, and prognosis of many forms of cancer. The purpose of this study is to examine the expression of CD44 in endometrial cancer and its correlation with established prognostic variables.

METHODS

A cross-sectional study was conducted on 64 samples of endometrial cancer from Wahidin Sudirohusodo Hospital and Hasanuddin University Hospital. Immunohistochemical analysis was used to detect CD44 expression using mouse anti-human CD44 monoclonal antibody. Differences in Histoscore were studied to determine the association between CD44 expression and clinicopathological factors of endometrial cancer.

RESULTS

Of the overall sample, 46 samples were in the early stage, whereas 18 samples were in the advanced stage. High expression of CD44 was associated with advanced stage compare than early stage (P=0.010), poor differentiation compare than well-moderate differentiation (P=0.001), myometrial invasion ≥50% compare than myometrial invasion <50% (P=0.004), and positive LVSI compare than negative LVSI (P=0.043) in endometrial cancer, but not associated with histological type of endometrial cancer (P=0.178).

CONCLUSIONS

High expression of CD44 may be considered as a poor prognostic marker and predictive marker for targeted therapy in endometrial cancer.