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• W1968767078 abstract "A reliable quantitative method for measuring gene product expression is important in investigating the relationship between growth factors and tumor biological behavior. In this study, we quantified the expression of vascular endothelial growth factor (VEGF) mRNA in 104 paired samples of lung cancer tissue and the surrounding nontumorous lung tissue using a new kinetic quantitative polymerase chain reaction (PCR) method, ie, real-time quantitative reverse transcription-PCR (RTQ RT-PCR). The samples consisted of 46 squamous cell carcinomas, 50 adenocarcinomas, and 8 undifferentiated cell carcinomas. In 17 cases, the results obtained were compared with those obtained using quantitative competitive RT-PCR (QC RT-PCR). Using RTQ RT-PCR, VEGF mRNA expression was detected and quantified in all 104 (100%) lung cancer samples and their normal counterparts. VEGF mRNA expression in the lung cancer tissue was significantly higher than in the normal counterparts (95% CI: 0.575 ∼ 1.727, p < 0.001; paired t test). In 68 (65.4%) cases, VEGF mRNA expression was higher in the cancer tissue than normal tissue. VEGF mRNA expression was higher in nonsquamous cell carcinoma (p = 0.02), and higher in tumor with hilar or mediastinal lymph node metastasis (p = 0.024). QC RT-PCR was able to detect and quantify VEGF mRNA expression in 15/17 (88%) lung cancer samples and 12/17 (70.6%) normal tissue samples. The values for VEGF mRNA expression were higher in the tumor in 13 (76%) cases. Comparison of the values of the VEGF mRNA expression quantified using RTQ RT-PCR or QC RT-PCR showed a good correlation between results obtained using these two methods, both in cancer tissue (r = 0.68, p = 0.0025) and normal counterpart (r = 0.53, p = 0.027). Agreement between the results for the relative expression of VEGF mRNA expression in cancer and normal tissue obtained using these two methods was seen in 14/16 cases (88%). We conclude that RTQ RT-PCR is as accurate as QC RT-PCR and is more sensitive than QC RT-PCR in detecting and quantifying VEGF mRNA expression in lung cancer and normal tissues, and both methods reveal that the VEGF mRNA expression is higher in lung cancer tissue than in healthy lung tissue." @default.
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• W1968767078 date "2000-11-01" @default.
• W1968767078 modified "2023-10-16" @default.
• W1968767078 title "Quantification of VEGF mRNA Expression in Non-Small Cell Lung Cancer Using a Real-Time Quantitative Reverse Transcription-PCR Assay and a Comparison with Quantitative Competitive Reverse Transcription-PCR" @default.
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• W1968767078 doi "https://doi.org/10.1038/labinvest.3780177" @default.
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