Objective： To investigate the expressions and the clinical significance of P53, C-erbB-2 and vascular endothelial growth factor （VEGF） in non-small cell lung cancer （NSCLC）. Methods： 121 specimens of NSCLC were ...Objective： To investigate the expressions and the clinical significance of P53, C-erbB-2 and vascular endothelial growth factor （VEGF） in non-small cell lung cancer （NSCLC）. Methods： 121 specimens of NSCLC were examined for P53, C-erbB-2 and VEGF by immunohistochemical staining. Results： The positive rates of P53, C-erbB-2 and VEGF in the carcinomatous tissue were 43%, 39% and 31% respectively. P53 gene protein expression in lung cancer was significantly related to histological type and P-TNM staging of lung cancer patients （P 〈 0.05）, and was not associated with the sex, age, the size of primary cancer, lymph node metastasis and cell differentiation （P 〉 0.05）. C-erbB-2 gene protein expression in lung cancer was closely related to histological type and cell differentiation （P 〈 0.05）, and was not associated with the sex, age, the size of primary cancer, lymph node metastasis and P-TNM staging of lung cancer patients （P 〉 0.05）. VEGF in lung cancer was only closely related to cell differentiation （P 〈 0.05）, and was not associated with the sex, age, the size of pdmary cancer, lymph node metastasis, histological type and P-TNM staging of lung cancer patients （P 〉 0.05）. Conclusion： It is possible for P53, C-erbB-2 and VEGF to play an important role in the oncogenesis and development of non-small cell lung cancer.展开更多
Objective: To study the expression of vascular endothelial growth factor C (VEGF-C) in gastric carcinoma and its relationship with lymph node metastasis. Methods: The expression of VEGF-C mRNA in 5 gastric carcinoma c...Objective: To study the expression of vascular endothelial growth factor C (VEGF-C) in gastric carcinoma and its relationship with lymph node metastasis. Methods: The expression of VEGF-C mRNA in 5 gastric carcinoma cell lines was detected by reverse transcription-polymerase chain reaction (RT-PCR). Simultaneously, the expression of VEGF-C protein in gastric carcinoma tissues, which were obtained from 63 patients who underwent radical gastrectomy, was detected by immunohistochemistry. Results: Three of the 5 gastric carcinoma cell lines, MKN-45, SGC-7901 and AGS, expressed VEGF-C mRNA. VEGF-C protein was expressed in 52.4% (33/63) of patients. VEGF-C protein expression was more frequently found in tumors with lymph node metastasis than in those without (P<0.01). VEGF-C protein expression was also closely related to lymphatic invasion (P<0.01) and TNM stage (P<0.01). However, there was no significant correlation between VEGF-C expression and the age, gender, tumor size, tumor location, Lauren classification, depth of invasion, and vascular invasion. Conclusion: The expression of VEGF-C is closely related to lymph node metastasis of gastric carcinoma, and lymphangiogenesis might be a new target for treatment of gastric carcinoma.展开更多
文摘Objective： To investigate the expressions and the clinical significance of P53, C-erbB-2 and vascular endothelial growth factor （VEGF） in non-small cell lung cancer （NSCLC）. Methods： 121 specimens of NSCLC were examined for P53, C-erbB-2 and VEGF by immunohistochemical staining. Results： The positive rates of P53, C-erbB-2 and VEGF in the carcinomatous tissue were 43%, 39% and 31% respectively. P53 gene protein expression in lung cancer was significantly related to histological type and P-TNM staging of lung cancer patients （P 〈 0.05）, and was not associated with the sex, age, the size of primary cancer, lymph node metastasis and cell differentiation （P 〉 0.05）. C-erbB-2 gene protein expression in lung cancer was closely related to histological type and cell differentiation （P 〈 0.05）, and was not associated with the sex, age, the size of primary cancer, lymph node metastasis and P-TNM staging of lung cancer patients （P 〉 0.05）. VEGF in lung cancer was only closely related to cell differentiation （P 〈 0.05）, and was not associated with the sex, age, the size of pdmary cancer, lymph node metastasis, histological type and P-TNM staging of lung cancer patients （P 〉 0.05）. Conclusion： It is possible for P53, C-erbB-2 and VEGF to play an important role in the oncogenesis and development of non-small cell lung cancer.
文摘Objective: To study the expression of vascular endothelial growth factor C (VEGF-C) in gastric carcinoma and its relationship with lymph node metastasis. Methods: The expression of VEGF-C mRNA in 5 gastric carcinoma cell lines was detected by reverse transcription-polymerase chain reaction (RT-PCR). Simultaneously, the expression of VEGF-C protein in gastric carcinoma tissues, which were obtained from 63 patients who underwent radical gastrectomy, was detected by immunohistochemistry. Results: Three of the 5 gastric carcinoma cell lines, MKN-45, SGC-7901 and AGS, expressed VEGF-C mRNA. VEGF-C protein was expressed in 52.4% (33/63) of patients. VEGF-C protein expression was more frequently found in tumors with lymph node metastasis than in those without (P<0.01). VEGF-C protein expression was also closely related to lymphatic invasion (P<0.01) and TNM stage (P<0.01). However, there was no significant correlation between VEGF-C expression and the age, gender, tumor size, tumor location, Lauren classification, depth of invasion, and vascular invasion. Conclusion: The expression of VEGF-C is closely related to lymph node metastasis of gastric carcinoma, and lymphangiogenesis might be a new target for treatment of gastric carcinoma.
