【摘要】目的观察基质金属蛋白酶-7(mmp-7)蛋白在喉癌中的表达,探讨其表达与肿瘤侵袭转移、血管生成及预后的关系。方法采用免疫组化方法检测mmp-7在48例喉癌标本中的表达水平,运用χ2检验、直线回归分析、乘积极限法、对数秩检验进行统计学分析。结果mmp-7在喉癌中的阳性表达率为81.25%(39/48),明显高于癌旁正常喉黏膜上皮的18.75%(6/48);mmp-7与患者年龄、肿瘤病理分化程度无关,与喉癌原发灶浸润深度、区域淋巴结转移范围和临床分期相关;喉癌mmp-7蛋白表达水平与肿瘤微血管密度呈线性依存关系,其回归系数为0.60;低表达(阴性或弱阳性)mmp-7的喉癌标本术后3年和5年的生存率分别为82.38%、73.23%,明显高于高表达(阳性或强阳性)mmp-7的喉癌标本术后3年和5年的生存率分别为66.42%、44.28%。结论mmp-7在喉癌中呈阳性表达,其表达与肿瘤侵袭转移程度呈正相关系,与喉癌微血管密度呈线性依存关系,高表达mmp-7的喉癌预后较差。
【关键词】喉肿瘤;基质金属蛋白酶-7;免疫组织化学;肿瘤转移;血管生成;预后
expressionofmatrixmetalloproteinase-7inlaryngealcarcinomaanditssignificanceincancermetastasisandangiogenesis
xuwei-hua,chenren-hui,fuya-feng,etal.
departmentofotolaryngology-headandnecksurgery,theaffiliatedhospitalofguangdongmedicalcollege,zhanjiang524001,china
【abstract】objectivetoobservetheexpressionofmatrixmetalloproteinase-7(mmp-7)inlaryngealcarcinomaanditssignificanceinmetastasisangiogenesisandprognosis.methodsimmunochemistrywereusedtodetecttheexpressionofmmp-7inlaryngealcarcinoma.chi-squaretest,linearregression,kaplan-meiermethodandlog-ranktestwereappliedinstatisticanalysis.resultsexpressiverateofmmp-7inlaryngealcarcinomawas81.25%,obviouslyhigherthan18.75%innormallaryngealepithelial.mmp-7expressionwasnotcoherentwithpatientsageandhistologyclassification.buttherelationshipwasexistedbetweenmmp-7expressionandlaryngealcancerinvasivedepthandrationallymphaticmetastasisandtnmstaging.lineardependencywasexistbetweenmmp-7expressionandtumormicrovesseldensity(mvd).the3yearsand5yearssurvivalrateoflowmmp-7express(negativeorslightpositive)laryngealcarcinomawere82.38%and73.23%,obviouslyhigherthan66.42%and44.28%inhighexpress(positiveorhighpositive)group.conclusionmmp-7expressinlaryngealcarcinoma.theexpressionarerelatedwithcancerinvasionandmetastasis.lineardependencywasexistbetweenmmp-7expressionandtumormvd.highmmp-7expressionlaryngealcarcinomahaveabadprognosis.
【keywords】laryngealcarcinoma;matrixmetalloproteinase-7;immunochemistry;tumormetastasis;angiogenesis;prognosis
喉癌是头颈部常见的恶性肿瘤,较其他头颈部肿瘤,喉癌虽然有较低的转移率,但是局部复发和转移仍为喉癌患者5年内死亡的主要原因[1]。