簡介:REVIEWENDOTHELIALSHEARSTRESSINTHEEVOLUTIONOFCORONARYATHEROSCLEROTICPLAQUEANDVASCULARREMODELLINGCURRENTUNDERSTANDINGANDREMAININGQUESTIONSJOLANDAJWENTZEL1,YIANNISSCHATZIZISIS2,3,FRANKJHGIJSEN1,GEORGEDGIANNOGLOU3,CHARLESLFELDMAN2,ANDPETERHSTONE21BIOMEDICALENGINEERING,DEPARTMENTCARDIOLOGY,ERASMUSMC,ROTTERDAM,THENETHERLANDS2CARDIOVASCULARDIVISION,BRIGHAMANDWOMEN’SHOSPITAL,HARVARDMEDICALSCHOOL,BOSTON,MA,USAAND31STDEPARTMENTOFCARDIOLOGY,AHEPAUNIVERSITYHOSPITAL,ARISTOTLEUNIVERSITYMEDICALSCHOOL,THESSALONIKI,GREECERECEIVED23MARCH2012REVISED12JUNE2012ACCEPTED25JUNE2012ONLINEPUBLISHAHEADOFPRINT29JUNE2012ABSTRACTTHEHETEROGENEITYOFPLAQUEFORMATION,THEVASCULARREMODELLINGRESPONSETOPLAQUEFORMATION,ANDTHECONSEQUENTPHENOTYPEOFPLAQUEINSTABILITYATTESTTOTHEEXTRAORDINARILYCOMPLEXPATHOBIOLOGYOFPLAQUEDEVELOPMENTANDPROGRESSION,CULMINATINGINDIFFERENTCLINICALCORONARYSYNDROMESATHEROSCLEROTICPLAQUESPREDOMINANTLYFORMINREGIONSOFLOWENDOTHELIALSHEARSTRESSESS,WHEREASREGIONSOFMODERATE/PHYSIOLOGICALANDHIGHESSAREGENERALLYPROTECTEDLOWESSINDUCEDCOMPENSATORYEXPANSIVEREMODELLINGPLAYSANIMPORTANTROLEINPRESERVINGLUMENDIMENSIONSDURINGPLAQUEPROGRESSION,BUTWHENTHEEXPANSIVEREMODELLINGBECOMESEXCESSIVEPROMOTESCONTINUEDINFLUXOFLIPIDSINTOTHEVESSELWALL,VULNERABLEPLAQUEFORMATIONANDPOTENTIALPRECIPITATIONOFANACUTECORONARYSYNDROMEADVANCEDPLAQUESWHICHSTARTTOENCROACHINTOTHELUMENEXPERIENCEHIGHESSATTHEIRMOSTSTENOTICREGION,WHICHAPPEARSTOPROMOTEPLAQUEDESTABILIZATIONTHISREVIEWDESCRIBESTHEROLEOFESSFROMEARLYATHEROGENESISTOEARLYPLAQUEFORMATION,PLAQUEPROGRESSIONTOADVANCEDHIGHRISKSTENOTICORNONSTENOTICPLAQUE,ANDPLAQUEDESTABILIZATIONTHECRITICALIMPLICATIONOFTHEVASCULARREMODELLINGRESPONSETOPLAQUEGROWTHISALSODISCUSSEDCURRENTDEVELOPMENTSINTECHNOLOGYTOCHARACTERIZELOCALESSANDVASCULARREMODELLINGINVIVOMAYPROVIDEARATIONALEFORINNOVATIVEDIAGNOSTICANDTHERAPEUTICSTRATEGIESFORCORONARYPATIENTSTHATAIMTOPREVENTCLINICALCORONARYSYNDROMESKEYWORDSSHEARSTRESS?HIGHRISKPLAQUE?INFLAMMATION?VASCULARREMODELLING1INTRODUCTIONATHEROSCLEROTICPLAQUESAREREGIONSINTHEARTERIALSYSTEMCHARACTERIZEDBYINTIMALTHICKENINGWITHEXCESSIVEBUILDUPOFOXIDIZEDLOWDENSITYLIPOPROTEINCHOLESTEROLACCOMPANIEDBYINFLAMMATORYCELLINFILTRATION,SMOOTHMUSCLEPROLIFERATION,ANDEXTRACELLULARMATRIXACCUMULATION1PLAQUESPRONETORUPTURESOCALLEDVULNERABLEPLAQUESAREFURTHERCHARACTERIZEDBYTHEPRESENCEOFALARGENECROTICCORECOVEREDBYANINFLAMEDTHINFIBROUSCAP2RUPTUREOFAVULNERABLECORONARYATHEROSCLEROTICPLAQUEISRESPONSIBLEFORTHEMAJORITYOFACUTECORONARYEVENTS,3WHICHARETHELEADINGCAUSEOFMORBIDITYANDMORTALITYINTHEWESTERNWORLDALTHOUGHTHERISKFACTORSFORATHEROSCLEROTICPLAQUEFORMATION,INCLUDINGHIGHCHOLESTEROL,DIABETES,ANDHIGHBLOODPRESSURE,ARESYSTEMICINNATURE,PLAQUESARELOCATEDATSPECIFICSITESINTHEARTERIALSYSTEMTHESESITESINCLUDESIDEBRANCHES,THEOUTERWAISTOFBIFURCATIONS,ORTHEINNERCURVEOFARTERIES,WHEREDISTURBEDFLOWANDLOWENDOTHELIALSHEARSTRESSESSOCCUR4–7INCONTRAST,ARTERIALREGIONSEXPOSEDTOMODERATE/PHYSIOLOGICALESSAREPROTECTEDFROMATHEROSCLEROSISEARLYOBSERVATIONSONTHERELATIONSHIPBETWEENESSANDPLAQUELOCALIZATIONWEREBASEDMAINLYONAUTOPSYMATERIAL,8,9ANDCONSEQUENTLYDIDNOTALLOWINVESTIGATIONOFTHEINFLUENCEOFESSONATHEROSCLEROSISTHEADVENTOFTHREEDIMENSIONAL3DRECONSTRUCTIONTECHNIQUESFORCORONARYARTERIESINVIVO,10–13BASEDONBIPLANEANGIOGRAPHYANDCORRESPONDINGAUTHORSJJWISATBIOMECHANICSLABORATORY,BIOMEDICALENGINEERING,EE2322,ERASMUSMC,POBOX2040,3000CAROTTERDAM,THENETHERLANDSYSCISATFIRSTDEPARTMENTOFCARDIOLOGY,AHEPAUNIVERSITYHOSPITAL,ARISTOTLEUNIVERSITYMEDICALSCHOOL,1STYLPKURIAKIDISTREET,54636,THESSALONIKI,GREECETEL31107044044JJW,302310994837YSCFAX31107044720,EMAILJWENTZELERASMUSMCNLJJWJOCMEDAUTHGRYSCPUBLISHEDONBEHALFOFTHEEUROPEANSOCIETYOFCARDIOLOGYALLRIGHTSRESERVEDFIGURE3BOFNOTE,THEABSOLUTECUTOFFPOINTFORLOWESSAPPEARSTOBEDEPENDENTONCONCOMITANTCONDITIONSASPRESENTEDBELOWSECTION3LOWESSTYPICALLYOCCURSATTHEINNERAREASOFCURVATURESANDPOTENTIALLYATTHEUPSTREAMSHOULDERSOFASTENOSISLOWOSCILLATORYESSISBIDIRECTIONAL,WITHAFLUCTUATINGMAGNITUDEBETWEENSYSTOLEANDDIASTOLE,RESULTINGINALOWTIMEAVERAGEAPPROXIMATELY,10–15PAFIGURE3BLOWOSCILLATORYESSOCCURSPRIMARILYDOWNSTREAMOFSTENOSES,ATTHELATERALWALLSOFBIFURCATIONSANDATTHEOSTIAOFBRANCHESHIGHESSISCHARACTERIZEDBYASIGNIFICANTLYHIGHTIMEAVERAGEAPPROXIMATELY30PAANDOCCURSATTHEUPSTREAMANDMOSTSTENOTICSITEOFTHEPLAQUE3DYNAMICNATUREOFLOCALESSESSISADYNAMICFACTORTHATCHANGESINDIRECTIONANDMAGNITUDEWITHPLAQUEFORMATIONANDVASCULARREMODELLING35ASACONTINUOUSVARIABLE,ESSCOVERSAWIDESPECTRUMOFVALUES,FROMLOWESSTOMODERATE/PHYSIOLOGICALESSANDTOHIGHESSTHECUTOFFPOINTSDEFININGLOW,MODERATE/PHYSIOLOGICAL,ANDHIGHESSMAYVARYAMONGSPECIES,ANDAMONGVASCULARBEDSEGFEMORAL,CAROTID,ANDCORONARYARTERIESINTHESAMESPECIES36EVENINTHESAMEVASCULARLOCATION,ESSCHANGESOVERTIMEINRESPONSETOSEVERALSYSTEMICANDLOCALFACTORSTHESEVERITYOFSYSTEMICRISKFACTORSEGHYPERCHOLESTEROLAEMIACERTAINLYINFLUENCESTHEEFFECTOFTHELOCALHAEMODYNAMICENVIRONMENTFURTHERMORE,THESTAGEOFATHEROSCLEROSISDEVELOPMENT,THEREMODELLINGRESPONSEOFTHEWALLTOPLAQUEFORMATION,ASWELLASREGIONALSTRUCTURALANDSTIFFNESSCHARACTERISTICSCRITICALLYDETERMINETHELOCALESSENVIRONMENTANDTHESUBSEQUEN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簡介:1中文中文2740字出處出處WANGXJ,YUANSL,XIAOL,ETALTHEEXPRESSIONOFCSRCGENEINTHECARCINOGENESISPROCESSOFHUMANCARDIAADENOCARCINOMAJWORLDJOURNALOFGASTROENTEROLOGY,1999,56488491人賁門癌癌變進(jìn)程中人賁門癌癌變進(jìn)程中CSRC基因的表達(dá)基因的表達(dá)關(guān)鍵詞CSRC基因表達(dá)產(chǎn)物PP60CSRC;腫瘤轉(zhuǎn)移;摘要目的探討CSRC基因在人賁門癌(CA)癌變進(jìn)程中的活性,表達(dá)和作用。方法對56例CA,34例正常,36例癌旁上皮和20例CA的轉(zhuǎn)移淋巴結(jié)用特異的單克隆抗體MAB327,免疫組化法檢測PP60CSRC和CSRC基因的表達(dá)。結(jié)果PP60CSRC的陽性率在正常上皮,增生上皮,CA和轉(zhuǎn)移淋巴結(jié)中分別為29410/34,94434/36,71440/56和60012/20。而且,各陽性率間有顯著的統(tǒng)計(jì)學(xué)差異P<001。CA和增生上皮中的PP60CSRC的表達(dá)水平顯著高于正常上皮P<001=。PP60CSRC的陽性率在乳頭狀,管狀,低分化和粘膜腺癌中分別為7506/8,81818/22,50010/20和10006/6,管狀和粘膜腺癌中顯著高于乳頭狀和低分化腺癌(P005)。結(jié)論CSRC基因的活性和表達(dá)與人CA的發(fā)生和發(fā)展相關(guān);PP60CSRC蛋白數(shù)量在發(fā)癌過程中增加;PP60CSRC的表達(dá)與淋巴結(jié)轉(zhuǎn)移相關(guān)。介紹目前遠(yuǎn)端胃癌的發(fā)病率逐年下降,而賁門癌的發(fā)病率卻在穩(wěn)定增加。CA的生物學(xué)和流行病學(xué)特征于遠(yuǎn)端胃癌明顯不同,且原因不明[13]。PP60CSRC是CSRC基因的產(chǎn)物,具有酪氨酸激酶活性。CSRC基因表達(dá)的增加在乳腺癌[4],食管癌[5],胃癌[6]和結(jié)腸癌[7]中都有報(bào)道。CSRC基因活性和表達(dá)可能與一些腫瘤的發(fā)生發(fā)展有關(guān)。我們先前的研究表明CSRC基因的活性和表達(dá)與食管鱗癌的分化和發(fā)展有關(guān)[8]。因此我們相信在賁門癌中也有相似的變化。材料和方法標(biāo)本的收集和處理所有的56例CA標(biāo)本均來自腫瘤中心的手術(shù)后CS患者。所有的標(biāo)本均經(jīng)固定化程序,甲醛固定,石蠟包埋,至少兩套4ΜM6ΜM厚的石蠟切片。一個(gè)用HE染色,一個(gè)做免疫組化。試劑單克隆抗體MAB327小鼠IGG由日本大學(xué)分子病理系提供,抗生蛋白鏈菌素免疫組化試劑盒ZYMEDUSA從FUZHOUMAXIMBIOTECH公司購買。PP60CSRC蛋白的免疫組化分析PP60CSRC蛋白用LSAB方法的免疫組化分析。組織切片在梯度乙醇中脫蠟脫水后,用胰蛋白酶消化。用3H2O2阻滯內(nèi)源性過氧化物酶的活性,用正常血清處理后,切片在稀釋為1∶100的MAB327中孵育,4℃過夜。在室溫下,生物素化的第二抗體20分鐘,抗生蛋白鏈菌素30分鐘。再用含有0005H2O2的002的3,3四鹽酸二氨基聯(lián)苯胺染色。再用蘇木精復(fù)染。組織病理學(xué)檢查CA和有關(guān)的損傷的組織病理學(xué)診斷,以及CA的組織學(xué)類型均由2名有經(jīng)驗(yàn)的病理醫(yī)生根據(jù)一定的標(biāo)準(zhǔn)做出[8]。PP60CSRC免疫組化染色的定性和定量分析PP60CSRC的免疫染色按照已知的標(biāo)準(zhǔn)分析[5]。CA中PP60CSRC陽性細(xì)胞的百分率按以下標(biāo)準(zhǔn)分級(jí)陰性,<25,2550,>50。PP60CSRC陽性細(xì)胞表性和細(xì)胞膜的染色強(qiáng)度與陰性對照陰性,弱,中度和強(qiáng)。結(jié)果組織病理學(xué)檢查在56例CA標(biāo)本中,包括乳頭狀8/56,管狀22/56,低分化3多正常細(xì)胞中均可發(fā)現(xiàn)PP60CSRC的表達(dá)。在細(xì)胞增生,分化和轉(zhuǎn)化的調(diào)控中起重要的作用[4]。目前的研究顯示PP60CSRC蛋白數(shù)量和激酶活性的增加與一些人類腫瘤的發(fā)身發(fā)展相關(guān),而且活性和表達(dá)增加是腫瘤發(fā)生的一個(gè)因素[48]。本研究中,PP60CSRC蛋白在CA,乳頭狀,管狀,低分化和粘液腺癌中的表達(dá)分別為71440/56,94434/36和29410/34,在CA和增生上皮中PP60CSRC的陽性率比在正常上皮中高(P001)。JANKOWISKIETAL分析了15例食管腺癌和15例BARRETT′S食管上皮中CSRC基因產(chǎn)物表達(dá),陽性率為203/15,提示CSRC基因的表達(dá)于食管腺癌的發(fā)展相關(guān)。因此,本研究的結(jié)果顯示CSRC基因的活性和表達(dá)可能與CA的發(fā)生發(fā)展相關(guān)。但是,在增生上皮中PP60CSRC的高表達(dá)可能與老年大鼠的腺上皮細(xì)胞的增生相關(guān)[9]。在一些癌旁正常上皮PP60CSRC的低表達(dá)可能是由于在正常上皮中PP60CSRC的表達(dá)與癌的發(fā)生相關(guān)[58]。另一方面,也說明CSRC基因的活性和表達(dá)可能使CA發(fā)癌過程中的一個(gè)早期事件。盡管CSRC基因的活性和表達(dá)與一些人類腫瘤的發(fā)生相關(guān)。用生化方法測定PP60CSRC的激酶活性和蛋白數(shù)量的結(jié)果因方法而不同。大部分的研究報(bào)道,PP60CSRC的激酶活性在癌細(xì)胞株和胃癌,腸癌,肺癌和腎癌的組織中有增加。但是與腫瘤相比,正常組織中無PP60CSRC蛋白數(shù)量的不同。PP60CSRC的激酶活性的增加無法用CSRC基因編碼的蛋白表達(dá)的增加而解釋[6,10]。本研究中,PP60CSRC蛋白用特異的單克隆抗體MAB327檢測,在CA和增生上皮中PP60CSRC的高表達(dá)分別為357和778,在癌旁的一些正常上皮中有PP60CSRC的低表達(dá),兩者表達(dá)的不同有顯著的統(tǒng)計(jì)學(xué)意義(P001)。本研究的結(jié)果提示PP60CSRC蛋白數(shù)量在CA中增加。關(guān)于CSRC基因表達(dá)產(chǎn)物,PP60CSRC和癌細(xì)胞分化之間的關(guān)系,有不同的意見[6,8,9,11]。FANNINGETAL[1]報(bào)道了在高分化膀胱癌中有CSRC基因的高水平表達(dá),提出PP60CSRC蛋白和激酶活性與泌尿道和ⅠⅡ期膀胱癌上皮細(xì)胞的分化相關(guān)。TAKEKURAETAL[6]PP60CSRC激酶活性在高分化和低分化胃癌中未發(fā)現(xiàn)不同。本研究中,不同組織類型的CA中PP60CSRC陽性率也不同。在粘液腺癌中陽性率為1000,6/6,在管狀腺癌中為818,18/22,比乳頭狀750,6/8和低分化500,10/20要高,這種不同有顯著性差異(P005)。在粘液和管狀腺癌中高水平的表達(dá)分別為10006/6和63614/18,在乳頭和低分化腺癌中只有低表達(dá),這種不同也有顯著的差異(P001)。這些結(jié)果提示,PP60CSRC表達(dá)水平與CA的分化和組織學(xué)類型相關(guān),在粘液和管狀腺癌中的PP60CSRC高表達(dá)可能與它們的高分化和其他的生物學(xué)行為相關(guān)。帶有激酶活性增加的PP60CSRC表達(dá)與結(jié)腸癌轉(zhuǎn)移的關(guān)系也有報(bào)道[12,13]。但是用免疫組化染色檢測轉(zhuǎn)移淋巴結(jié)中PP60CSRC蛋白暫無報(bào)導(dǎo)。TALAMONTIETAL[12]發(fā)現(xiàn)PP60CSRC激酶活性在原發(fā)和多發(fā)癌中也有增加。TERMUHLENETAL[13]報(bào)道了在結(jié)腸癌干轉(zhuǎn)移中也有PP60CSRC激酶活性的增加。本研究中,檢測CA的轉(zhuǎn)移淋巴結(jié)中的PP60CSRC蛋白,陽性率為60012/20,PP60CSRC表達(dá)水平與相同的原發(fā)腺癌相同。本研究的結(jié)果顯示,PP60CSRC表達(dá)與CA的淋巴結(jié)轉(zhuǎn)移相關(guān)。
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