RP多糖体内抗鸭乙型肝炎病毒实验研宄何云鹏陶慧慧刘群红(安徽理工大学医学院安徽淮南232001)【摘要】目的观察RP多糖在体内对DHBV的抑制作用。方法体内实验以先天感染DHBV的雏鸭为动物模型,将雏鸭(10只/组)随机分为5组(RP多糖高、中、低3个剂量组、3-TC组、生理盐水对照组),均以20mg/kg/d灌胃给药10天。给药前1天、给药后5天、10天及停药后3天,均采用斑点杂交法观察血清中DHBV-DNA表达。结果各剂量组RP多糖对DHBV均有相应的抑制作用。其中给药后第5天,高、中剂量组血清DHBV-DNA为0.77±0.27、0.69±0.15,第10天为0.57±0.11、0.49±0.19,与生理盐水对照组(1.32±0.56、1.24±0.53)相比明显降低。给药后第5天,RP多糖高、中剂量组对DHBV-DNA的抑制率为25.16%、25.35%,第10天为45.94%、48.28%,与生理盐水对照组对比显著提高。结论RP多糖可降低血DHBV-DNA含量,对DHBV有抑制作用。【关键词】菲律宾蛤仔多糖鸭乙肝动物模型乙型肝炎【中图分类号】R392-3【文献标识码】A【文章编号】2095-1752(2014)04-0041-02ExperimentalStudyofRuditapesphilippinarumPolysaccharideonAnti-DHBVinVivoHeYunpengTaoHuihuiLiuQunhong(SchoolofMedicine,AnhuiUniversityofScience&Technology,Huainan,Anhui232001,China)【Abstract】Objective:Toobservethein-vivoinhibitoryeffectofRPpolysaccharideonDHBV.Methods:1-dayoldBeijingducklingswithcongenitalinfectionofDHBVwereusedastheanimalmodelandwererandomlydividedintofivegroups(Namely,RPpolysaccharidehighdosegroup,mediumdosegroup,lowdosegroup,Lamivudinegroupandnormalsalinegroup).Eachgroupofducksweregiventhedrugwiththedoses20mg/kg/dfor10days.TheexpressionofDHBV-DNAwasdetectedbydot-blothybridizationtestldaybeforetreatment,fivedaysandtendaysduringtreatment,and3daysafterdrugwithdrawal,respectively.Results:IneachgroupoftheRPpolysaccharidehascorrespondinginhibitiononDHBV.AfterbeingmedicatedwithRPpolysaccharideforfivedays,inRPpolysaccharidehighdosegroup,mediumdosegroup,SerumDHBV-DNAwas0.77±0.27,0.69±0.15;whilefortendays,0.57±0.11,0.49±0.19,respectively,whichwasobviouslylowercomparedwiththoseinnormalsalinegroup(1.28±0.54,1.20±0.5l).TheinhibitionratesofDHBV-DNAinRPpolysaccharidehighdosegroup,mediumdosegroupwere25.16%,25.35%respectively5daysaftertreatment,while45.94%,48.28%;respectively10daysaftertreatment,indicatingremarkableimprovementcomparedwiththecontrolgroup.Conclusion:RPpolysaccharidecanprotectduckliveragainstinflammationbytheinhibitionofDHBV.[Keywords]RuditapesphilippinarumpolysaccharideDuckhepatitisBanimalmodelHepatitisB菲律宾蛤仔(Ruditapesphilippinarum,RP),属软体动物门(Mollusca)、双壳纲(Bivalvia)、帘蛤科(Veneridae},广泛分布在我国南北沿海的浅海区,又称杂色蛤、蛤蜊、花蛤。苏生长周期短,适应能力强,经济价值高,适合人工规模养殖,系我国传统养殖的四大災类之一。菲律宾蛤仔可作食药两用,以其入药自古就有记载:宋朝掌禹锡《嘉祐本草》中记其“润五脏,止消渴,开胃,解酒毒,主老癖能为寒热者,及妇人血块,煮食之。”《中华本草》中总结艽“味甘、咸、性寒;清热解毒。主臁疮;黄水疮。”因其药用功效显著iL价廉易得,被广泛作为研宄对象,国内外学者近年来的研究表明,其具冇抗肿瘤、抗炎、增强免疫力、降压、降血脂、延缓衰老等药理作用[1】。B前对其抗病毒作用的研究不多,本文尝试对RP多糖在体内抗鸭乙型肝炎病毒(DHBV)的作用进行探讨。1材料1.1动物先天感染DHBV的北京雏鸭50只(1日龄,重50±5g),购自北京昌平种鸭场。1.2药物本实验室提取的RP多糖(将活体RP去壳、洗净后匀浆,用超声波辅助热水提取、乙醇沉淀法提取多糖,经柱层析分离纯化后即得到水溶性好、米黄色的粗提物,经谢里瓦诺夫反应、莫立许反...