Rasmi Y, Allameh A, Nasseri-Moghaddam S, Gill P, Moghaddam MF, Hedayati M. 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.
Clin Biochem 2006;
39:997-1001. [PMID:
16979613 DOI:
10.1016/j.clinbiochem.2006.06.010]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2006] [Revised: 06/19/2006] [Accepted: 06/21/2006] [Indexed: 11/19/2022]
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.
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