牙周炎牙龈中表皮生长因子受体表达的研究[摘要]目的:观察表皮生长因子受体(EGFR)在牙周炎中的表达。方法:采用免疫组化方法,检测15例健康人、32例成人牙周炎(AP)和12例青少年牙周炎(JP)患者牙龈的EGFR表达。结果:正常牙龈EGFR仅局限于基底细胞膜;在AP患者牙周袋内壁或结合上皮,大部分上皮细胞膜存在EGFR高水平表达,基底层最强烈,随角化细胞的分化而逐渐减弱消失;JP患者牙龈亦出现局限于上皮生发层的高水平表达。AP与JP之间或与正常牙龈之间差异非常显著(P<0.01)。结论:EGFR可能影响着结合上皮向根方迁移的过程,在AP和JP的发生发展中起着一定的作用。[主提词]受体,表皮生长因子-尿抑胃素;龈;免疫组织化学[中分类号]R781.4+2[文献标识码]A[]1000-4718(2000)04-0351-03Theexpressionofreceptorofepidermalgrowthfactoringingivaofpatientwithperiodontitis激激an-xing,PANGuang-si,ZHUTong,GAOPing(DepartmentofStomatology,FirstAffiliatedHospital,GuangzhouMedicalCollege,Guangzhou,510120,China)[Abstract]AIM:Toobservetheexpressionofepidermalgrowthfactorreceptors(EGFR)ofgingivaltissueinperiodontitis.METHODS:TheexpressionofEGFRwasdeterminedbyusingimmunohistochemicaltechniquesingingivaltissueof15healthyindividual,32caseswithadultperiodontitis(AP)and12caseswithjuvenileperiodontitis(JP).RESULTS:ExpressionofEGFRwasmainlylocatedonbasalcellmembranesinhealthygingiva,andthestainingintensitywasfaint.InAPcases,expressionofhighlevelEGFRwasmostlyobservedonthemembranesofepithelialcellintheperiodontalendopocketorjunctionalepithelium,intensityofstainingappearedtodecreasegraduallywiththedifferentiationofkeratinocytes,andthehornycelllayerwasnotstainedbytheantibody.InJPcases,strongpositivestainingwaspresentonmembraneofepithelialcellsinthegerminativelayerofgingivaltissue.TherewasanapparentdifferencebetweenhealthygingivaandAPorJP(P<0.01),orAPandJP(P<0.01).CONCLUSION:ThedistributionandexpressionofEGFRingingivalepitheliumofperiodontitisshowedobviousdifference.ThedataindicatedthatEGFRmayaffectapicalmigrationofjunctionalepithelium,andmayplayaroleindevelopmentofAPandJP.[MeSH]Receptors,epidermalgrowthfactor-urogastrone;Gingiva;Immunohistochemistry表皮生长因子(epidermalgrowthfactor,EGF)是与细胞生长和分化有关的重要因子[1],在伤口愈合、粘膜保护中起着重要作用[2]。Whitcomb等[3]研究发现口腔内各部位粘膜中存在表皮生长因子受体(epidermalgrowthfactorreceptor,EGFR)表达,唾液中含有高浓度的EGF[4,5],口腔粘膜固有层中亦可检测到EGF的存在[6],推测EGF和EGFR与口腔粘膜病变可能有关连。本研究采用免疫组化技术,研究EGFR在牙龈中的分布特性及其与牙周病的关系,旨在了解EGFR在牙周炎发生与发展中的作用。---本文来源于网络,仅供参考,勿照抄,如有侵权请联系删除---材料和方法一、标本牙周炎活检标本于门诊就诊的成人牙周炎(adultperiodontitis,AP)患者和青少年牙周炎(juvenileperiodontitis,JP)患者,正常牙龈取自无任何牙周、牙龈病变和口腔粘膜病损的健康志愿者,其中,AP32例,年龄(39.3±11.2)岁,牙周袋探诊深度(probingdepth,PD)(3.9±1.1)mm,附着丧失(attachmentloss,AL)(5.7±2.3)mm,出血指数(bleedingindex,BI)3.4±0.9;JP12例,年龄22.6±4.1岁,PD(4.3±1.4)mm,AL(5.6±1.8)mm,BI3.7±0.5;健康对照15例,年龄25.6±3.8岁,PD<2mm,AL=0,BI<2。活检于拔牙术或翻瓣术中进行,在患者的唇颊侧颊舌方向切取自龈缘至牙周袋底根侧2mm的全层龈组织(宽约2mm)。切取标本后,立本表面残血即用4℃生理盐水冲洗标块,密封于塑料离心管内,置液氮中保存待用。二、主要试剂LSAB试剂盒和鼠抗人表皮生长因子受体单克隆抗体(DAKO-Anti-EGF-Receptor,EGFR1)为丹麦DAKO公司产品。三、对照以1例正常胎盘组织恒冷切片作为阳...