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Objective: To investigate the survival and influencing factors of unexpected small cell lung cancer following surgery. Methods: We respectively reviewed the clinical characters of 104 patients who underwent surgical treatment and be proved as small cell lung cancer by pathology between January 2000 to October 2020 in Chinese PLA General Hospital. Overall survival (OS) of patients was evaluated using Kaplan-Meier and Cox proportional hazards analysis. Results: Of 104 patients, 27 cases showed central lesions, and other 77 showed peripheral nodules. The margin of nodules was smooth in 42 cases on CT imaging. The median OS was 34.3 months and 5-year OS rate was 45.8%. Postoperative 5-year OS rates for patients were 52.1%, 45.4%, and 27.8% for clinical stages Ⅰ, Ⅱ, and Ⅲ, respectively. Univariate analyses identified the age, surgical access, surgical approach, N stage, TNM stage and vascular cancer emboli were associated with OS (P<0.05). The N stage was an independent factor for the OS of patients (P<0.05). Conclusions: Patients with unexpected SCLC, including Ⅰ, Ⅱ and part ⅢA stage have favorable outcome and can benefit from surgery and systemic postoperative treatment. Standard lobectomy plus systemic lymph node dissection is commended.
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Humans , Lung Neoplasms/pathology , Lymph Node Excision , Neoplasm Staging , Prognosis , Retrospective Studies , Small Cell Lung Carcinoma/surgery , Survival AnalysisABSTRACT
OBJECTIVE@#To study the effect of lentivirus-mediated integrin αVβ3-shRNA on tumor growth of mice with lung cancer xenograft.@*METHODS@#Lung cancer tissue, paracancer tissue and normal tissue were collected and integrin αVβ3 expression was detected; BALB/c nude mice were selected, divided into integrin αVβ3 knockdown group (KD group) and negative control group (NC group), and inoculated with cells stably infected by integrin αVβ3-shRNA lentivirus and cells stably infected by negative control-shRNA lentivirus, respectively, the growth of tumor tissue was continuously observed, and the number of apoptosis cells as well as the expression of angiogenesis, apoptosis and invasion genes in tumor tissue were detected.@*RESULTS@#mRNA content and protein content of integrin αVβ3 in lung cancer tissue were significantly higher than those in paracancer tissue and normal tissue; increasing trend of tumor tissue volume of KD group was weaker than that of NC group, and tumor volume at various points in time of KD group was lower than that of NC group; mRNA contents and protein contents of VEGF, FGF, EGF, Bcl-2, MMP-9, MMP-12 and MMP-13 in tumor tissue of KD group were lower than those of NC group, and apoptosis index as well as mRNA content and protein content of Bax were higher than those of NC group.@*CONCLUSIONS@#The expression of integrin αVβ3 increases in lung cancer tissue, and lentivirus-mediated integrin αVβ3-shRNA can inhibit tumor growth of mice with lung cancer xenografts.
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Objective: To study the effect of lentivirus-mediated integrin αVβ3-shRNA on tumor growth of mice with lung cancer xenograft. Methods: Lung cancer tissue, paracancer tissue and normal tissue were collected and integrin αVβ3 expression was detected; BALB/c nude mice were selected, divided into integrin αVβ3 knockdown group (KD group) and negative control group (NC group), and inoculated with cells stably infected by integrin αVβ3-shRNA lentivirus and cells stably infected by negative control-shRNA lentivirus, respectively, the growth of tumor tissue was continuously observed, and the number of apoptosis cells as well as the expression of angiogenesis, apoptosis and invasion genes in tumor tissue were detected. Results: mRNA content and protein content of integrin αVβ3 in lung cancer tissue were significantly higher than those in paracancer tissue and normal tissue; increasing trend of tumor tissue volume of KD group was weaker than that of NC group, and tumor volume at various points in time of KD group was lower than that of NC group; mRNA contents and protein contents of VEGF, FGF, EGF, Bcl-2, MMP-9, MMP-12 and MMP-13 in tumor tissue of KD group were lower than those of NC group, and apoptosis index as well as mRNA content and protein content of Bax were higher than those of NC group. Conclusions: The expression of integrin αVβ3 increases in lung cancer tissue, and lentivirus-mediated integrin αVβ3-shRNA can inhibit tumor growth of mice with lung cancer xenografts.
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Objective To find out the arsenic pollution in Yangzonghai lake and its influence to the surrounding drinking water source and the local food and to provide a scientific basis for arsenic pollution control,drinking water and food safety. Methods Arsenic monitoring were carried out in 10 points of Yangzonghai lake,45 water sources within 5 km of Yangzonghai lake, and locally produced food. Results From September 2008 to December 2009, the water arsenic concentrations of Yangzonghai lake ranged 0.06 - 0.18 mg/L, the average arsenic concentrations were 0.12 mg/L and 0.10 mg/L for 2008 and 2009, respectively, the value of 2009 was higher, and the difference was statistically significant(t = 3.284, P ＜ 0.05). There were no significant difference in the average of arsenic concentration of Yangzonghai lake between the dry and rainy season in 2009(t = 0.905, P ＞0.05). The arsenic concentrations from the No. 3 spring water ranged from 0.12 - 30.36 mg/L. After a peak value early in October 2008, the No. 3 spring water showed a downward trend month by month. In 2008 the average arsenic concentration was 23.92 mg/L, 2009 was 2.41 mg/L, down 89.92% over the previous year, the difference was statistically significant(t = 9.582, P ＜ 0.05 ). In January and February 2009, the average arsenic concentration (11.96 mg/L) was significantly higher than those of March-December(0.50 mg/L, t = 57.759, P＜ 0.05). In Yangzong town, the arsenic concentration in the drinking water and river met the national drinking water health standards. Among 78 samples monitored of the locally produced food in Yangzong town, 77 passed, with a pass rate of 98.72%. Conclusions Arsenic contamination has been effectively controlled. The drinking water and local food production has not been contaminated by arsenic except aquatic products in Yangzonghai Lake. It is recommended to take effective measures to prevent water contamination.