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Objective ToinvestigatethecorrelationbetweenCTimagingfindingsoflungadenocarcinomaandepidermalgrowth factorreceptor(EGFR)genemutation.Methods Theclinicaldataof150lungadenocarcinomapatientsinthehospitalfrom October 2015toOctober2017werecollectedretrospectively.AccordingtotheEGFRgenemutation,thepatientsweredividedintononeffectivemutation group (n=78)andeffective mutationgroup (n=72).Univariateanalysisand multivariate L o g istic regression modelwereperformed toexplorethepredictionsignsofeffectiveEGFRgenemutationinlungadenocarcinoma.Results Univariateanalysisshowedthatthe proportionsoffemalepatients,smokinghistory,CTfindingsofspiculesign,necroticsign,pleuralindentationandnonfibrosisin theeffectivemutationgroupweresignificantlyhigherthanthoseinnoneffectivemutationgroup(P<0.05).However,therewereno significantdifferencesbetweenthesetwogroupsinage,diameteroflesions,locationoflesions,densityoflesions,lobulatedsign, cavitation sign ,air bronchogram and pleuralthickening sign (P>0 .05 ).M ultivariate L o g istic regression analysis showed thatfemale (OR=2.612),spiculesign(OR=2.476),necroticsign(OR=2.846),pleuralindentation(OR=2.221)andnonfibrosis(OR=2.476)were independentpredictorsofeffectiveEGFRgenemutationinlungadenocarcinoma(P<0.05).Conclusion FemaleandlungadenocarcinomaCT findingsofspiculesign,necroticsign,pleuralindentationandnonfibrosisarerelatedtoEGFRgenemutation,whichisofgreatsignificanceto distinguishingwildtypefrom mutanttypeofEGFRgeneandguidingtheclinicaltreatment.
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Objective To investigate the correlation between histone deacetylase 1(HDAC1) and vascular endothelial growth factor(VEGF) in the patients with lung adenocarcinoma.Methods Eighty cases of lung adenocarcinoma in our hospital from August 2014 to April 2016 served as the research subjects,and contemporaneous 80 individuals undergoing healthy physical examination were taken as the control group.The fasting venous blood sample was collected in all subjects.Then serum HDAC1 and VEGF levels were detected by ELISA.The differences of serum HDAC1 and VEGF expression levels were compared between the two groups.The HDAC1 and VEGF expression levels in the patients with different characteristics of lung adenocarcinoma and the relation between serum HDAC1 and VEGF concentrations were analyzed.Furthermore the possible influence factors of HDAC1 protein expression level in the patients with lung adenocarcinoma were analyzed.Results The HDAC1 levels in the control group and observation group were(329.56 ± 23.83) ng/L and(568.20 ± 35.40) ng/L,the difference was statistically significant(t=23.576,P=0.000).The VEGF levels in the control group and observation group were(40.26±9.82)ng/L and(296.56±19.80)ng/L respec tively,the difference was statistically significant(t=31.154,P=0.000).The HDAC1 protein level had statistical difference among different genders,ages,clinical stages and smoking history,the HDAC1 protein level in male,age ＞60 years old,clinical stage Ⅲ,V and patients with smoking history were higher(P＜0.05).The Pearson correlation analysis results showed that serum HDAC1 in the patients with lung adenocarcinoma was positively correlated with VEGF protein concentration(r=0.526,P =0.000).The Logistic regression analysis showed that influence factor of HDAC1 protein expression level in the patients with lung adenocarcinoma was clinical stage.Conclusion The high expression of HDAC1 protein in lung adenocarcinoma patients may also simultaneously regulate the VEGF expression,thus promotes the development of lung adenocarcinoma.
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OBJECTIVE:To investigate the effects of total paeony glycoside (TPG) on the expression of tumor suppressor gene in lung cancer model rats. METHODS:90 rats were randomly divided into normal group,model group,positive control group [cyclophosphamide,50 mg/(kg·d)] and TPG low-dose,medium-dose and high-dose groups [50,100,200 mg/(kg·d)] with 15 rates in each group. Except for normal group,other groups were given disposable infusion of carcinogenic iodized oil via left lobe bronchus to induce lung cancer model. After modeling,those groups were given relevant medicine intravenously from Monday to Friday,while normal group and model group were given constant volume of normal saline intravenously for consecutive 16 weeks. The expression of multidrug resistance associated protein(MRP),human multidrug resistance gene(MDR1),P21 and P16 mRNA in lung tissue of rats were determined by RT-PCR;the expression of P53 protein in lung cancer tissue was determined by IHC method.The rate of positive expression was calculated,and pathological change of lung tissue was observed. RESULTS:Com-pared with normal group,the expression of MRP,MDR1,P21,P16 mRNA and P53 protein(positive rate of 66.67%)in lung tis-sue was increased significantly in model group (P<0.05);compared with model group,the expression of MRP,MDR1,P21, P16 mRNA and P53 protein (positive rate of 46.67%,46.67%,40.00%,13.33%) decreased in positive control group,TPG low-dose,medium-dose and high-dose groups in dose-dependent manner,and the decrease of TPG medium-dose and high-dose groups were more significant than that of positive control group (P<0.05);there was statistical significance in above indexes among TPG groups(P<0.05). CONCLUSIONS:TPG could inhibit the expression of MRP,MDR1,P21,P16 gene and P53 pro-tein in lung cancer model rats significantly.
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Objective To explore the expression levels and significance of Caveolin-1 and proliferating cell nuclear antigen (PC-NA) in esophageal squamous cell carcinoma .Methods Immunohistochemical SP method was used to detect the expression levels of caveolin-1 and PCNA in 150 cases of esophageal squamous cell carcinoma and 35 cases of normal esophageal squamous cell . Results The expressions of Caveolin-1 in esophageal carcinoma was significantly higher than in normal esophageal mucosa (P<0 .05) ,caveolin-1 was related to lymph node metastasis ;The expressions of PCNA in esophageal carcinoma was significantly higher than in normal esophageal mucosa(P<0 .05) ,PCNA was related to age ,lymph node metastasis and tumor size .The expression of Caveolin-1 was positively correlated with PCNA (r=0 .266 ,P<0 .05) .Conclusion Caveolin-1 and PCNA overexpression might be related to the occurrence ,development and metastasis of esophageal squamous cell carcinomas .
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Objective To investigate whether cyclooxygenase-2(COX-2)expression are related to the clinicopathological features,and to microvessel density(MVD).Methods COX-2 expressions were detected in 45colorectal carcinoma samples by immunostaining.MVD was evaluated with the specific antibody CD105.Quantitationof COX-2 mRNA was performed by RT-PCR in 45 specimens of colorectal carcinoma.Results The expressions of COX-2 mRNA and protein were significant variation among lymphatic metastasis,high Dukes stages and grade of differation(P＜0.05);Increased value of MVD were significant variation among lymphatic metastasis,high Dukes stage and depth of tumor invasion(P＜0.05).Both the overexpression of COX-2 protein and mRNA was positively correlated with the value of MVD(P＜0.05).Conclusion COX-2 plays an important role in the development of colorectal carcinoma.COX-2 may up-regulate the value of MVD,which induces angiogenesis and accordingly contributes to metastasis.