简介:摘要目的对1个腓骨肌萎缩症(Charcot-Marie-Tooth,CMT)家系进行全基因组测序,为临床诊断和遗传咨询提供依据。方法应用高通量基因测序(next generation sequencing technology,NGS)检测CMT的致病基因位点,筛查各成员携带致病基因的情况。结果测序结果显示家系中两例患儿的GDAP1基因存在c.1A>G纯合变异,导致编码蛋白第1位氨基酸由Met变为Val(p.Met1Val),为错义变异,其父母均携带c.1A>G杂合变异;目前尚无该变异的相关报道,在人群中发生的频率极低。另外家系中1例患儿和母亲携带BAG3基因c.710A>T杂合变异。结论GDAP1基因c.1A>G纯合变异可能为该家系患儿的致病原因,基因测序结果为患儿的临床诊断和遗传咨询提供了依据。
简介:选择2015年1月~2017年1月160例糖尿病患者,健康体检的160名为对照组。结果观察组水平均高于对照组,C肽低于对照组(P<0.05)。结论糖尿病患者血清C肽与HbA1c有明显差异,可作为临床诊断参考指标。
简介:AIMToinvestigatetheroleofthecomplement5a(C5a)/C5areceptor(C5aR)pathwayinthepathogenesisofacuteliverfailure(ALF)inamousemodel.METHODSBALB/cmicewererandomlyassignedtodifferentgroups,andintraperitonealinjectionsoflipopolysaccharide(LPS)/D-galactosamine(D-GalN)(600mg/kgand10μg/kg)wereusedtoinduceALF.TheKaplanMeiermethodwasusedforsurvivalanalysis.Serumalanineaminotransferase(ALT)levels,atdifferenttimepointswithina1-wkperiod,weredetectedwithabiochemistryanalyzer.Pathologicalexaminationoflivertissuewasperformed36hafterALFinduction.Serumcomplement5(C5),C5a,tumornecrosisfactor-α(TNF-α),interleukin(IL)-1β,IL-6,high-mobilitygroupproteinB1(HMGB1)andsphingosine-1-phosphatelevelsweredetectedbyenzyme-linkedimmunosorbantassay.Hepaticmorphologicalchangesat36hafterALFinductionwereassessedbyhematoxylinandeosinstaining.ExpressionofC5aR,sphingosinekinase1(SphK1),p38-MAPKandp-p38-MAPKinlivertissue,peripheralbloodmononuclearcells(PBMCs)andperitonealexudativemacrophages(PEMs)ofmiceorRAW264.7cellswasanalyzedbywesternblotting.C5aRmRNAlevelsweredetectedbyquantitativereal-timePCR.RESULTSActivationofC5andup-regulationofC5aRwereobservedinlivertissueandPBMCsofmicewithALF.BlockadeofC5aRwithaC5aRantagonist(C5aRaC5aRa)significantlyreducedthelevelsofserumALT,inflammatorycytokines(TNF-α,IL-1βandIL-6)andHMGB1,aswellasthelivertissuedamage,butincreasedthesurvivalrates(P<0.01forall).BlockadeofC5aRdecreasedSphK1expressioninbothlivertissueandPBMCssignificantlyat0.5hafterALFinduction.C5aRapretreatmentsignificantlydownregulatedthephosphorylationofp38-MAPKinlivertissuesofALFmiceandC5astimulatedPEMsorRAW264.7cells.Moreover,inhibitionofp38-MAPKactivitywithSB203580reducedSphK1proteinproductionsignificantlyinPEMsafterC5astimulation.CONCLUSIONTheC5a/C5aRpath
简介:目的探讨非小细胞肺癌(NSCLC)组织中醛酮还原酶1C3(AKRlC3)表达及其临床意义。方法收集2013年1月至2016年3月88例手术切除的NSCLC组织及83例癌旁正常组织,采用实时荧光定量PCR(QPCR)法检测上述组织中的AKRlC3表达水平,分析AKRlC3表达与NSCLC临床病理参数(性别、年龄、TNM分期、肿瘤大小、组织学类型及淋巴结转移)的关系;根据随访资料分析AKRlC3表达与预后的关系,采用受试者工作特征曲线(ROC)评价AKRlC3表达在NSCLC早期诊断中的效能。结果NSCLC组AKRlC3表达水平为0.187±0.175,低于癌旁正常组织的1.079±0.384,差异有统计学意义(P〈0.05);AKRlC3诊断NSCLC的曲线下面积为0.982(95%CI:0.966~0.998)。AKRlC3表达与NSCLC性别、年龄、组织学类型及淋巴结转移无关,与肿瘤大小及TNM分期有关。肿瘤大小〉3em的AKRlC3表达量为0.095+0.055,低于肿瘤大小≤3em的0.340±0.201,而Ⅲ、Ⅳ期的AKRlC3表达量为0.094±0.058,低于I、Ⅱ期的0.265±0.202,差异有统计学意义(P〈0.05)。全组NSCLC患者的中位总生存期(OS)为17.60个月。AKRlC3高表达者的中位0s为20.60个月,高于低表达者的11.90个月,差异有统计学意义(P〈0.05);I+Ⅱ期患者的中位OS为21.65个月,高于Ⅲ+Ⅳ期的16.20个月,差异有统计学意义(P〈0.05);肿瘤大小≤3em者的中位OS为18.40个月,高于〉3em者的15.70个月,差异有统计学意义(P〈0.05)。结论AKRlC3在NSCLC组织中表达降低,且与TNM分期、肿瘤大小及预后有关,可能与NSCLC发生发展有关,在NSCLC诊断及病情评估有一定价值。
简介:摘要目的探讨靶向促甲状腺激素受体(TSHR)和细胞间黏附分子-1(ICAM-1)治疗格雷夫斯病(GD)的新方法。方法设计合成TSHR的小干扰RNA(siRNA)及ICAM-1单克隆抗体(mAb)。30只GD模型鼠按随机数字表法分为siRNA治疗组、ICAM-1 mAb治疗组及未治疗组,另取10只正常小鼠作为空白对照。治疗前、后测定小鼠血清甲状腺素(T4)、促甲状腺激素(TSH)、TSH受体刺激性抗体(TSAb)、TSH刺激阻断性抗体(TSBAb)水平,治疗结束后测定各组小鼠体质量、心率,评估甲状腺摄取99TcmO4-能力、甲状腺大小及病理变化。采用两独立样本t检验、配对t检验及单因素方差分析处理数据。结果3次治疗后,siRNA组、ICAM-1 mAb组小鼠体质量均低于正常小鼠(F=3.50, P=0.025),心率均低于未治疗组GD模型鼠(F=24.73, P<0.001),其中siRNA组心率下降明显,接近正常小鼠。3次治疗后,siRNA组、ICAM-1 mAb组小鼠血清T4[(27.58±1.94)、(27.24±3.50) μg/L]、TSAb[(331.44±43.38)、(275.16±45.80) mU/L]、TSBAb[(13.94±1.11)、(14.59±1.02) mU/L]水平均较治疗前明显下降[T4:(65.71±6.89)、(70.84±8.46) μg/L, TSAb:(457.33±45.85)、(443.91±42.32) mU/L, TSBAb: (15.83±5.92)、(17.05±6.16) mU/L;t值:4.45~10.87,均P<0.05],2组小鼠血清TSH水平[(0.13±0.05)、(1.46±0.34) mU/L]均较治疗前明显上升[(0.04±0.05)、(0.06±0.03) mU/L;t值:-2.22、-5.87,P值:0.007、<0.001],ICAM-1 mAb组小鼠TSH升高幅度及TSAb降低幅度高于siRNA组(t值:1.03、-1.63, P值:0.002、0.031)。治疗后siRNA组、ICAM-1 mAb组小鼠均见甲状腺部分腺叶摄取99TcmO4-能力减低,相应腺叶肿大程度缩小。治疗组小鼠甲状腺病理可见甲状腺滤泡吸收空泡减少,胶质稀薄现象有所改善。小鼠心、肝、肾病理未见明显损伤。结论靶向TSHR的siRNA及ICAM-1 mAb均对GD模型鼠有治疗作用,在控制心率方面siRNA效果更好,在升高TSH及降低TSAb方面ICAM-1 mAb效果更好。上述治疗方法安全、有效,可以为GD的靶向治疗提供新思路。
简介:AIM:ToInvestigatethegeneticfindingsandphenotypiccharacteristicsofaChinesefamilywithNorriedisease(ND).METHODS:MoleculargeneticanalysisandclinicalexaminationswereperformedonaChinesefamilywithND.MutationsintheNorriediseasepseudoglioma(NDP)geneweredetectedbydirectsequencing.Haplotypeswereconstructedandcomparedwiththephenotypesinthefamily.Evolutionarycomparisonsandmutantopenreadingframe(ORF)predictionwerealsoundertaken.RESULTS:TwofamilymemberswithocularmanifestationswerediagnosedwithND.Nosignsofsensorineuralhearinglosswereobservedineitherpatient,whileoneofthemshowedsignsofmildmentalretardation.AnovelheterozygousmutationintheNDPgene,c.-12delAAT,wasdetectedinbothpatients.ThemutationandthemutationbearinghapiotypecosegregatedwiththeNDphenotypeinmalesandwastransmittedfromtheirmothersand/orgrandmothers(Ⅱ:2).ThemalewithoutNDdidnotharborthemutation.Themutationoccurredatthehighlyconservednucleotides.DRFfinderpredictedthatthemutationwouldleadtotheproductionofatruncatedproteinthatlacksthefirst11N-terminalaminoacids.CONCLUSION:Anovelmutation,c.-12delAATintheNDPgene,wasidentifiedinaChinesefamilywithND.ThismutationcausedNDwithoutobvioussensorineuralhearingloss.Mentaldisorderwasfoundinonebutnottheotherpatients.Theclinicalheterogeneityinthefamilyindicatedthatothergeneticvariantsandepigeneticfactorsmayalsoplayaroleinthediseasepresentation.
简介:InthispaperweestablishsharpH¨olderestimatesofharmonicfunctionsonaclassofconnectedpostcriticallyfinite(p.c.f.)self-similarsets,andshowthatfunctionsinthedomainofLaplacianenjoythesameproperty.Somewell-knownexamples,suchastheSierpinskigasket,theunitinterval,thelevel3Sierpinskigasket,thehexagasket,the3-dimensionalSierpinskigasket,andtheVicseksetarealsoconsidered.