简介:Usingtwo-colourflowcytometry>200antibodiessubmittedtothe8thInternationalWorkshopofHumanLeukocyteDifferentiationAntigens(HLDA8)havebeenanalyzedfortheirreactivitywithrestingandactivatedCD203c+basophils.Fourantibodieseithernon-reactiveorweaklyreactivewithrestingbasophilsexhibitedanincreasedreactivitywithbasophilsactivatedbyanti-IgE-mediatedcross-linkingofthehighaffinityIgEreceptor(FcεRI).TheseincludeantibodiesagainstCD164(WS-80160,cloneN6B6andWS-80162,clone67D2),aswellastworeagentswithpreviouslyunknownspecificitiesthatwereidentifiedasCD13(WS-80274,cloneA8)andCD107a(WS-80280,cloneE63-880).Theactivationpatternsfollowedeitherthe'CD203c-like'or'CD63-like'activationprofile.TheCD203cprofileischaracterizedbyarapidandsignificantupregulation(ofCD13,CD164,andCD203c),reachingmaximumlevelsafter5-15minofstimulation.ThePhosphoinositide-3-kinase(PI3K)-specificinhibitorWortmannininhibitedtheupregulationofthesemarkerswhereas12-O-tetradecanoyl-phorbol-13-acetate(TPA)inducedarapidandFcεRI-independentupregulationwithin1-2min.IntheCD63profile,maximumupregulation(ofCD63andCD107a)wasdetectedonlyafter20-40min,andupregulationbyTPAreachedmaximumlevelsafter60min.Insummary,ourdataidentifyCD13,CD107a,andCD164asnovelbasophil-activationantigens.Basedontimekineticsofupregulation,wehypothesizethatmoleculesofthe'CD203cgroup'andthe'CD63group'arelinkedtotwodifferentmechanismsofbasophilactivation.
简介:Glorious40Years¥Sincethemid-1950s,theYunnan-Tibet,Xinjiang-TibetandSino-NepalesehighwayshavebeenconstructedinTibet.Bythe10tha...
简介:目的检测急性脑梗死患者CD19^+-CD25^+、CD19^+-CD25^-B淋巴细胞、免疫球蛋白和补体C3的含量并探讨其临床意义。方法根据病史及头颅CT或MRI明确疾病诊断。抽取69例急性脑梗死、115例脑出血患者、41例正常对照者静脉血各4mL,采用流式细胞仪检测CD19^+-CD25^+、CD19^+-CD25^-B淋巴细胞百分比,采用散射比浊法检测免疫球蛋白和补体C3含量,并结合不同的病程、不同影像学评分和不同的神经功能评分进行分析比较。结果脑梗死和脑出血急性期CD19^+-CD25^+、CD19^+-CD25^-B淋巴细胞、免疫球蛋白和补体C,的差异无统计学意义(P均〉0.05)。脑梗死急性期CD19^+-CD25^+B淋巴细胞百分比、IgG、补体C3含量均较恢复期及对照组显著增高(P均〈0.05)。脑梗死恢复期各项体液免疫指标与对照组之间差异无统计学意义(P均〉0.05)。不同影像学评分患者之间CD19^+-CD25^+、CD19^+-CD25^-B淋巴细胞百分比差异有统计学意义(P均〈0.05)。脑梗死急性期神经功能评分与各体液免疫指标间无相关(P均〉0.05)。结论脑梗死与脑出血存在着同样的体液免疫功能改变。这种改变可能与应激、病变部位及病变范围有关。脑梗死病灶越大,体液免疫改变越明显;随着应激的消逝,体液免疫功能逐渐恢复。
简介:TheeffectofCdionsonsalmonspermDNAwasstudiedbymeansofcirculardichroism(CD),Ramanspectroscopy,X-rayphotoelectronspectroscopy(XPS)andfluorescencespectroscopy.TheCDspectralandfluorescentprobe-acriflavineresultsindicatethattheDNAunderwentaconformationchangeupontheadditionofCdions.XPSandRamanstudiesrevealthatthereexistedinteractionsbetweenCdionsandthephosphategroupsoftheDNA.Inaddition,anewbandappearedat803cm-1intheRamanspectra,whichcanbeattributedtocharacterizing"marker"bandofA-DNA.ItisconcludedthatCdionscanbecoordinatedbythephosphategroupsoftheDNAandinducetheconformationchangesoftheDNAfromB-DNAtoA-DNA.
简介:WaveRadio曾经是BOSE最畅销的产品之一,而WaveRadio/CD是Waveradio的改进版本,也是BOSE的最成功的桌面闹钟和音响。