简介：Objective:Toinvestigatetheexpressionofmatrixmetalloproteinase-7(MMP-7)andFasligand(FasL)ingastriccancerandexploretheirroleinprogressionofgastriccancer.Methods:Formalin-fixedparaffinandembeddedtissuesofprimarygastriccancerandadjacentnon-tumormucosafrom113caseswereevaluatedforMMP-7,FasLandCapase-3expressionbystreptavidin-peroxidase(S-P)immunohistochemistry.Theexpressionofthefirsttwoproteinsincancercellsofprimaryfociwascomparedwithclinicopathologicalparametersoftumors.WealsoobservedthecorrelationofMMP-7andFasLexpressionwithCaspase-3expressionincancercellsofprimaryfoci.Results:MMP-7positiveimmunostainingwaslessfrequentlydetectedinadjacentepithelialcellsthanincancercellsofprimaryfociofgastriccancer(P<0.05,29.2%vs69.0%),andsowasFasL(P<0.05,34.5%vs54.0%).MMP-7expressionwasassociatedwithtumorsize,Borrmann'sclassification,invasivedepth,metastasisandTNMstaging(P<0.05),butnotwithgrowthpattern,Lauren'sclassification,orhistologicalclassification(P>0.05).FasLexpressionwascorrelatedwithtumorsize,invasivedepth,metastasis,Lauren'sclassification,histologicalclassification(P<0.05),whilenotwithBorrmann'sclassification,TNMstagingorgrowthpattern(P>0.05).CancercellsofprimaryfociexpressedlessCaspase-3thantheiradjacentepithelialcells(P<0.05,32.7%vs50.4%).TherewasanobviouscorrelationbetweenFasL,MMP-7andCaspase-3expressionincancercellsofprimaryfoci(P<0.05).Co-expressionofMMP-7andFasLparalleledwithCaspase-3expressionincancercellsofprimaryfoci(P<0.05).Conclusion:MMP-7andFasLexpressionwasup-regulatedingastriccarcinogenesisandwasprincipallyinvolvedinprogressionofgastriccancer.FasLexpressioncouldreflectthedifferentiationofgastriccancercellsandunderliethemolecularmechanismsofdifferentpathwaysofgastrictumorigenesis.Co-expressionofMMP-7andFasLcouldhaveapoptosis-inducingeffe

简介：目的检测肺腺癌病人化疗前后血清可溶性Fas（sFas）水平探讨其临床意义。方法应用酶联免疫吸附试验法（ELISA）检测60例肺腺癌病人化疗前后血清sFas水平并同时检测30例正常人血清sFas水平作对比分析。结果肺腺癌病人血清sFas水平明显高于正常对照组（P〈0．01）。血清sFas水平与临床分期有关，与肺腺癌病人性别、年龄、细胞分化程度无关，Ⅳ期肺腺癌血清sFas水平明显高于Ⅲ期和Ⅱ期（P〈0．01），Ⅲ期明显高于Ⅱ期（P〈0．01），化疗后有效（完全缓解和部分缓解）病人血清sFas水平明显低于化疗前（P〈0．01）。结论血清sFas与肺腺癌的发生及发展有一定关系，检测血清sFas有可能成为肺腺癌辅助诊断、病情发展及化疗疗效观察的一项有价值的指标。