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1、TianjinMedJ,January2015,Vo1.43No.1膽道閉鎖肝纖維化研究進展丁美云,詹江華摘要:膽道閉鎖(BA)是嚴重危及嬰幼兒生命健康的消化系統(tǒng)疾病之一,晚期肝臟纖維化是導致患兒死亡的主要原因。在膽道閉鎖發(fā)病過程中,病毒感染可誘導一系列免疫和炎癥反應,導致調(diào)節(jié)性T細胞(Treg細胞)減少,CD14表達增高,多種炎癥通路以及轉(zhuǎn)化生長因子一13(TGF-13)/Smad2/3促纖維化通路被激活。激活的通路產(chǎn)生大量炎性介質(zhì)損傷肝細胞和膽管細胞,釋放各種促炎因子、氧代謝產(chǎn)物和細胞因子,進一步加重肝、膽系統(tǒng)損傷造成肝細胞內(nèi)環(huán)境失衡,失衡的內(nèi)環(huán)境伴隨肝實質(zhì)細胞、肝巨噬細胞、肝
2、內(nèi)聚集的炎性細胞等發(fā)生適應性變性、壞死、增生,導致肝星形細胞(HSCs)激活,HSCs轉(zhuǎn)化為成纖維細胞,促進肝纖維化進程。免疫、炎癥損傷、促纖維化通路是導致膽道閉鎖肝纖維化肝硬化的三大重要因素。關(guān)鍵詞:膽道閉鎖;肝硬化;T淋巴細胞,調(diào)節(jié)性;轉(zhuǎn)化生長因子B;抗原,CD14;Smad蛋白質(zhì)類中圖分類號:R726.574文獻標志碼:ADOI:10.3969~.issn.0253—9896.2015.O1.002AdvancesintheresearchofIiverfibrosisinbiliaryatresiaDINGMeiyun。ZHANJianghHa1TheGraduateSch
3、oolofTianjinMedicalUniversity,Tianjin300070,China;2TianfinChildren’sHospitalCorrespondingAuthorE—mail:zhanjianghuatj@163.tomAbstract:Biliaryatresia(BA)isoneofthemostseriousdigestivesystemdiseases,whichthreatensthehealthofinfants.LiverfibrosisisamajorcauseofdeathinchildrenwithBA.Intheprocessoft
4、hepathogenesisofBA,virusinfectioncanin-duceaseriesofimmuneandinflammatoryreaction,resultinadecreaseofregulatoryTcells(Tregcells)andhighexpressionofCD14,activatingavarietyofinflammatorypathwaysandTGF一13/Smad2/3pro—fibrogenicpathway,whichproducesalargenumberofmediumdamageoflivercellsandbileductc
5、ells,releasesproinflammatoryfactor,oxygenmetabolismmatterandcytokines.Thesechangesfurtheraggravatedamageofhepatobiliarysystemandcausetheinternalenvironmentimbalanceofliverparenchymacells.Theimbalanceofinternalenvironmentwithadaptivedegenerationandnecrosisinliverparenchymacells,hepaticmacrophag
6、esandgatheredinflammatorycellsleadstotheactivationofhepaticstellatecells(HSCs).HSCscanbeconvertedintofibroblastcells,andpromotetheprocessofliverfibrosis.Immuneandinflammatorylesions,pro—fibrogenicpathwayaretheimportantfactorsincontributingtoliverfibrosisandcirrhosisofbiliaryatresia.Keywords:bi
7、liaryatresia;livercirrhosis;T—lymphocytes,regulatory;transforminggrowthfactorbeta;antigens,CD14;Smadproteins基金項目:天津市衛(wèi)計委重點攻關(guān)項目(14KG129)作者單位:1天津醫(yī)科大學研究生院(郵編300070);2天津市兒童醫(yī)院外科作者簡介:丁美云(1988),女,碩士在讀,主要從事d,JL普通外科、膽道閉鎖方面研究通訊作者及審校者zhianghuatj@16