简介: 目的:分析和总结体外循环心脏手术后合并真菌感染的临床特点及耐药情况。方法:对51例体外循环心脏直视术后继发真菌感染的临床资料进行统计分析,分析术后培养分离出的78株感染真菌的药敏试验结果。结果:心脏术后长期使用广谱抗生素及皮质激素、机械通气、气管切开、APACHEⅡ高评分、全肠外营养及侵入性检查治疗等均是真菌感染高危因素。心脏术后真菌感染部位以下呼吸道为主,其次为血液、静脉导管顶端,继之为泌尿系。大多数真菌菌株对两性霉素B、5-氟胞嘧啶敏感,对大扶康及伊曲康唑部分耐药。结论:合理使用广谱抗生素和糖皮质激素,尽量减少不必要的侵入性操作,加强全身营养及脏器功能支持,改善肠道微生态平衡,密切监测真菌感染的一切临床迹象,注重预防及经验性治疗;治疗上应选择敏感、毒副作用轻的抗真菌药物。
简介:BackgroundTheprognosticvalueofserumC-reactiveprotein(CRP)inpatientswithinfectiveendocarditis(IE)isnotwellelucidated.ThisstudyaimedtoevaluatetheusefulnessofCRPinpredictingtheoutcomeofIE.MethodsTwohundredninty-sixpatientsfrom2009to2012intheDepartmentofCardiologyatGuangdongGeneralHospitalwerescreenedanddividedintosurgicalandconventionaltreatmentgroups.CRP,whitebloodcell(WBC),erythrocytesedimentationrate(ESR)andotherclinicaldatawereobtainedwithfollow-upfor12months.ResultsTwohundredthirty-sixpatientswereassignedtoreceivesurgerytreatmentwhile60patientsreceivedconventionaltreatment.Inthesurgerygroup,thelevelofCRPinthedeathpatientswassignificantlyhigherthanthatinthesurvivalpatients(P<0.001).TheareaunderthecurveofROCwasabout0.749(SE0.064,P=0.005,95%CI,0.624-0.874)andthecut-offpointofCRPwas23.8mg/L.Inconventionalgroup,therewassignificantdifferencebetweendeathandsurvival(P<0.001).TheareaunderthecurveofROCwasabout0.701(SE0.095,P=0.032,95%CI,0.515-0.888)andthecut-offpointsofCRPwas65.6mg/L.TherewerenosignificantdifferencesinWBCandESRbetweensurgeryandconventionalgroups.ConclusionAmoreaggressivesurgicalinterventionresultsinabetteroutcomeoverconventionaltreatmentandCRPcouldbeservedasapredictivemarkerforadverseoutcomeinIEpatients.
简介:目的评估低密度脂蛋白胆固醇(LDL—C)/高密度脂蛋白胆固醇(HDL—C)比值对经皮冠脉介入(PcI)术后患者心血管事件的预测价值。方法选择急性冠脉综合征(ACS)并予前降支置入支架的患者119例,依据血浆LDL—C/HDL—C比值将患者分为3组,随访1年,评估三组患者心血管事件发生率,以及各危险因素与心血管事件发生率的关系。结果①与LDL—C/HDL—C比值较低的两组相比,比值较高组患者体重指数、女性患者百分率、吸烟人数及糖化血红蛋白、高敏C反应蛋(hs—CRP)、总胆固醇和LDL—C水平均明显升高,而HDL—C水平和他汀类药物使用率则较低(P〈0.05)。②第1组风险(HR)1.04,95%可信区间(c,)0.98-1.08,第2组HR1.16,95%C11.08-1.20,第3组HR1.27,95%C11.19~1.36(P〈0.05)。随着LDL—C/HDL—C比值的升高,PCI术后1年患者心血管事件发生率也逐渐升高(P〈0.05)。③Cox比例风险回归模型提示,LDL—C/HDL—C比值对PCI术后心血管事件风险的预测价值优于其他危险因素。结论LDL—C/HDL—C比值对PCI术后患者1年内心血管事件再发具有一定的预测价值。
简介:ObjectivesTostudythedepressiveeffectoftheantisenseoligonuceotides(ASODN)ofc-mycandproliferatingcellnuclearantigen(PCNA)ontheproliferationofVSMC.MethodsTakingtheVSMCobtainedfromrataortathoracaliscultured4~8generationasresearchobject.Theobjectsweredividedintothreegroupstocarryoutcontrolstudy:controlgroup,PCNAASODNgroupandc-mycASODNgroup.TheASODNs'workingconcentrationallwere1:50.ThedepressiveeffectofASODNonVSMCproliferationwasinvestigatedbycellcounting,MTTand3H-TdRincorporationassay;PCNAandc-mycexpressionweredetectedbyimmunohistochemicalmethodaftertransferringPCNAandc-mycASODNintoVSMC.ResultsPCNAandc-mycASODNcouldinhibittheproliferationofVSMCsignificantly,comparedwithcontrolgroup(P<0.05).②TransferringPCNAandc-mycASODNintoVSMCobtainedsuccessfully;thecorrespondinggenewasinhibitedobviously;comparedwithcontrolgroup(P<0.05).ConclusionsPCNAandc-mycmightplayaconsiderableroleintheVSMCproliferationprocess.ThecorrespondinggenecouldbedepressedsuccessfullyaftertransferringPCNAandc-mycASODNintoVSMC,andthentheproliferationofVSMCwassloweddown.Thisstudypresentedabeneficialproposalandtheoreticalfundamentforatherosclerotictreatment.
简介:Bothendotheliallipasegene(LIPG)584C>T(rs2000813)polymorphismandalcoholconsumptionmodulateserumlipidlevels.Buttheirinteractionsonserumlipidprofilesarenotwellknown.ThepresentstudywasundertakentodetecttheinteractionsofLIPG584C>Tpolymorphismandalcoholconsumptiononserumlipidlevels.GenotypingoftheLIPG584C>Twasperformedin763nondrinkersand520drinkersaged15-85.Interactionsbetweenthegenotypesandalcoholconsumptionwereassessedbyusingacross-productterm.Thelevelsofserumtotalcholesterol(TC),triglyceride(TG),high-densitylipoproteincholesterol(HDL-C),apolipoprotein(Apo)AI,andtheratioofApoAItoApoBwerehigherindrinkersthaninnondrinkers(P<0.01forall).Therewasnosignificantdifferenceinthegenotypicandallelicfrequenciesbetweennondrinkersanddrinkers.ThelevelsofserumTC,HDL-CandApoAIinnondrinkersweredifferentamongthethreegenotypes(P<.05-.01).ThesubjectswithCTgenotypehadhigherserumTC,HDL-CandApoAIlevelsthanthesubjectswithCCgenotype.ThelevelsofserumHDL-CandApoAIindrinkersweredifferentamongthethreegenotypes(P<.001andP<.05;respectively).TheindividualswithTTgenotypehadhigherserumHDL-CandApoAIlevelsthantheindividualswithCCandCTgenotypes.ThelevelsofTCinnondrinkerswerecorrelatedwithLIPG584C>Tallele(P<.05),whereasthelevelsofTGandHDL-CwereassociatedwithLIPG584C>Talleles(P<.05)andgenotypes(P<.05);respectively.ThepresentstudysuggeststhatthesubjectswithTTgenotypebenefitedmorefromalcoholconsumptionthanthesubjectswithCTandTTgenotypesinincreasingserumHDL-CandApoAIlevels.
简介:backgroundBonemarrowmesenchymalstemcells(BMSCs)canbeisolatedandculturedtomanypassages.However,StemcellsincludingBMSCsquicklyundergosenescenceinculture.Thecellsenescenceandmulti-directionaldifferentiationhavehamperedproducingBMSCsinquantitywiththeirundifferentiatedstate.Inthisstudywereportanaturalcompound,vitaminC(Vc),maintainsBMSCsstemproperty.MethodsHumanBMSCswereisolatedfrombonemarrowandpurifiedby1.073g/mLdensitygradientcentrifugation.50ng/mLVcwereaddedtoBMSCsfordifferenttimepoint.FlowcytometrywasusedtodetectcellsurfacemarkersofBMSCswithorwithoutVctreatment.BMSCsproliferationwasanalyzedbyMTTassay.PCR(polymerasechainreaction)andreal-timePCRwereusedfordetectingc-kit,nanog,andOct-4genesexpressionlevels.DNAmethyltransferase(Dnmt)1andDnmt3blevelswerealsodetectedbyreal-timePCR.ResultsFlowcytometryshowedthatafterVctreatmentfor6h,thesurfacemarkersofBMSCswerealmostunchanged.VcincreasedtheproliferationactivityofBMSCsfrom6hto24h.PCRshowedtheexpressionofc-kit,nanog,andoct-4geneswereobviouslyincreasedinVctreatedgroupthancontrolgroupat12h.Real-timePCRshowedthatthelevelofc-kit,nanog,andoct-4geneswereunregulatedfrom6hto12hcomparedwithcontrolgroup.VcalsoincreasedDnmt3bbutnotDnmt1geneexpression.ConclusionsOurresultsshowedVcactsatleastacceleratesBMSCsproliferationandmaintainsstemcellproperty.Inourstudy,wehighlightedamethodofimprovingthespeedofBMSCsgenerationandprovidedadditionalinsightsintothemechanisticbasisofpreventingBMSCssenescence.
简介:BackgroundInthisstudy,weaimedtoevaluatetheimpactofabnormalglucose,lipidandCystatin-ConthevirtualPvectorcharacteristics,whichhaven’tbeenreportedinpreviousstudies.Methods204ofnon-diabetesmellitus(NDM),130ofDM(type2)and39ofimpairedglucosetolerance(IGT)patientswereconsecutivelyandretrospectivelyrecruited.Weselectedaone-minutelengthofelectrocardiogramat4AMforanalysis.Afteraseriesofcalculatingalgorisms,weobtainedthevirtualplanarPvectorparameters.ResultsTherewerenosignificantdifferencesinFPV,FPA,RSPV,RSPA,HPVandHPAgroups.Afteradjustingconfoundingfactors,theregressioncoefficients(RC)wereestimatedasfollow:forFPV,femalegender(RC-0.21,P=0.02),triglyceride(RC-0.09,P<0.01),RVOT(RC0.03,P=0.02);forRSPV,femalegender(RC-0.21,P<0.01),triglyceride(RC-0.10,P<0.01),averageheartrate(RC0.01,P=0.02);forHPV,triglyceride(RC-0.08,P<0.001),LDL(RC-0.19,P<0.01),ApoB(RC0.67,P<0.01);forRSPA,Btypeofblood(RC-22.06,P=0.02),Cystatin-C(RC-72.79,P=0.02),thicknessofinterventricularseptum(RC3.70,P=0.01).Cystatin-CwassuggestedasacurerelatedtoRSPA,andthecut-offpointwas1.6mg/L.TherewerenosignificantriskfactorsassociatedwithFPAandHPA.TherewasnodifferenceinvirtualPvectoramongDM,IGTandNDMgroups.ConclusionIncreasedlevelsoflipidandCystatin-CsignificantlyimpactthecharacteristicsofvirtualPvector,whereasglucosedoesnot.Thesechangesmaycomefromahigherlowvoltageatrialareaandabnormalorientationofatrialdepolarization.
简介:目的探讨络风宁1号方对心肌梗死大鼠血栓调节素-活化蛋白C-内皮细胞蛋白C受体系统的调节作用。方法将SD大鼠随机分为假手术组(7只)、模型组(8只)、络风宁1号方组(7只)、联合用药组(8只)、卡托普利组(8只),心肌梗死造模后络风宁1号组及联合用药组予含生药量4.81g/(kg·d)的络风宁1号方汤剂,卡托普利组及联合用药组予卡托普利片7.5mg/(kg·d),假手术组及模型组予相同体积蒸馏水,2/d,连续4周。4周后测定各组大鼠心肌梗死边缘组织血栓调节蛋白(TM)、活化蛋白C(APC)、内皮细胞蛋白C受体(EPCR)基因及蛋白的表达。结果模型组大鼠EPCR、TM的mRNA、sEPCR、sTM含量较假手术组明显升高(P<0.05),EPCR、TM的蛋白表达及APC含量较假手术组下降(P<0.05);络风宁1号组、联合用药组EPCR、TM的mRNA以及含量较模型组降低,差异有统计学意义(P<0.05),EPCR蛋白表达较模型组增加,差异有统计学意义(P<0.05);络风宁1号组、联合用药组血清APC含量较模型组增加(P<0.05)。结论络风宁1号方能够减轻膜结合型EPCR、TM的损伤,抑制了TM、EPCR的mRNA代偿性增加,使sEPCR、sTM含量下降,APC含量增加。
简介:BackgroundApolipoprotein(apo)A-Visanovelmemberoftheapolipoproteinclusterinvolvedintriacylglycerol(TG)homeostasis.IthasreportedthatAPOA5genepolymorphismsiscorrelatedwitharterioscleroticdiseases.However,ThisassociationisunknownonChinesepatientswithatheroscleroticcerebralinfarction.ThepresentstudyaimedtoelucidatetherelationshipofAPOA5-1131T>Candarterioscleroticcerebralinfarction(ACI)aswellasthelevelsofserumlipids.MethodsPolymerasechainreaction-restrictionfragmentslengthpolymorphisms(PCR-RFLP)analysis,enzymaticandimmunoturbidimetrymethodswereusedtomeasure-1131T>Cgenotype,allelefrequencyaswellasplasmalipidlevelof90ACIpatientsand221healthysubjectsofHanChinese.ResultsInACIgroup,thelevelofTGinalleleCcarrierswashigherthanthatofnon-Ccarriers(P<0.05).ThefrequencyofalleleCinACIgroupwashigherthaninhealthygroup(χ~2=5.568,P=0.018).Exceptsex,ageandBMI,thelevelsoftotalcholesterol(TC),triglycerides(TG),highdensitylipoproteincholesterol(HDL-C),low-densitylipoproteincholesterol(LDL-C),APOA1andAPOBinACIgroupdistinctivelywerehigherthanthoseinhealthygroup.ConclusionTheAPOA5-1131alleleCisassociatedwiththehighlevelofTGinACIpatients,whichisprobablylinkedwithACIdangerofChineseHan.
简介:目的探讨急性脑卒中时C反应蛋白(CRP)的动态改变特点与临床生理指标、血生化指标、凝血指标之间的关系,了解急性脑卒中对CRP的影响。方法选择住院急性脑卒中患者55例(观察组),进行有关临床指标检查和不同时刻CRP的测定。另选在门诊的非脑血管病患者30例(对照组),测定CRP作为对照。结果观察组患者CRP动态变化显著高于对照组(P=0.0269~0.0006),发病初期CRP的变化与WBC计数、血糖、胆固醇变化显著相关,随后的增高则与年龄、甘油三酯、凝血功能、纤维蛋白原水平等有关,与格拉斯哥意识评分和巴塞尔神经功能评分呈负相关(P〈0.05,P〈0.01)。结论CRP的动态变化反映了机体损伤的实际状况,可以作为判断急性脑卒中严重程度和预后的有效指标.但这种变化会受到血液中多种因素的影响。