Comparison of glutathione S-transferase-Pi expression at mRNA levels in oesophageal mucosa using RT-PCR-ELISA in individuals with reflux diseases, adenocarcinoma and squamous cell carcinoma |
| |
Authors: | Rasmi Y Allameh A Nasseri-Moghaddam S Gill P Moghaddam M Forouzandeh Hedayati M |
| |
Affiliation: | Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modarres University, P. O. Box 14115-331, Tehran, Iran. |
| |
Abstract: | OBJECTIVES: To develop a RT-PCR technique coupled with Enzyme Linked Immunosobant Assay (ELISA) i.e. RT-PCR-ELISA for measurement of class-Pi glutathione S-transferase (GST-P)-specific mRNA in esophageal diseases. METHODS: In this study, 66 esophageal tissue biopsies diagnosed as non-erosive reflux disease (NERD), gastroesophageal reflux disease (GERD), adenocarcinoma (ADC), and squamous cell carcinoma (SCC) were used. Standardization of the RT-PCR-ELISA was carried out using specific GST-Pi and beta-actin primers, biotin labeled probe, DIG-labeling RT-PCR and anti-DIG-HRP conjugate. RESULTS: The results of RT-PCR-ELISA based on OD ratio of GST-Pi mRNA/beta-actin showed that there was no significant difference in GST-Pi expression in normal, NERD and GERD samples. Overexpression of GST-Pi in malignant tissues (ADC and SCC) was distinguishable. The OD ratio of GST-Pi mRNA expression to beta-actin mRNA was 1.17+/-0.13 and 1.3+/-0.13 in ADC and SCC samples, respectively, which is significantly higher (P<0.05) than matching control (0.78+/-0.06 and 0.85+/-0.07). CONCLUSIONS: RT-PCR-ELISA showed that GST-Pi expression was not altered in GERD and NERD esophagus, whereas, in ADC and SCC samples, it was significantly higher (P<0.05) as compared to inflamed and normal tissues. |
| |
Keywords: | RT-PCR-ELISA Glutathione S-Transferase pi Expression Esophagus Esophagitis |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|