*8632012AA02A402**Tel01067095601E-mailqiangyee@nifdc.org.cnTel18611694952E-mailchenqiong@nifdc.org.cn★★13***10005013。IMMAGE80020μL20μL200μL42.5min。1、3、4、5、6A、6B、7F、9V、14、18C、19A、19F、23F1~6μg·mL-1r>0.99RSD7%70%~130%9N9V132、8、10A、11A、12F、15B、17F、20、22F、33F10s131、3、4、5、6A、6B、7F、9V、14、18C、19A、19F、23F470%~130%。13。13R917A0254-1793201411-1954-05Determinationofpolysaccharidecontentsin13-valentpneumococcalconjugatedvaccinebynephelometry*CHENQiongWANGShan-shanLIANGLiWANGChun-eLIMao-guangSHIJi-chunYEQiang**NationalInstitutesforFoodandDrugControlKeyLaboratoryofMethodandStandardizationforQualityControlofBiotechnicalProductsBeijing100050ChinaAbstractObjectiveToestablishanephelometrymethodforthedeterminationofthepolysaccharidescontentsinthe13-valentpneumococcalconjugatedvaccine.MethodsUsingimmunochemistrysystemthenon-competitivenephelometricprotocolwaschosenthevolumeofthesampleorthestandardsubstancewas20μLtheserumvol-ume20μLthereactionbuffervolume200μLthegainfactor4thereactiontime2.5minutes.Thesampleorthestandardsubstancewastreatedbysodiumhydroxidedesorption.ResultsUndertheseconditionsinthisstudylinearrelationshipsofthe13456A6B7F9V1418C19A19F23Fpneumococcalcapsularpolysaccharidesintherangeof1-6μg·mL-1weregoodr>0.99.TheRSDofrepeatabilitywaslowerthan7%.Therecoveriesof13typesofpolysaccharideswere70%-130%.Thespecificityresultsshowedthat9Npolysaccharidehadinfluenceonthedetectionof9Vpolysaccharidecontentswhilethepolysaccharides2810A11A12F15B17F2022Fand33Fthatwerenotcontainedinthe13-valentpneumococcalconjugatedvaccinehadnoinfluence.RobustnessstudyresultsshowedthatusingsodiumhydroxidetotreatsamplesandstandardsubstancesNaOHaddedduringtheadsorbentprocesscouldbeneutralizedin10seconds.Usingthenephelometrymethodtodeterminatethecontentsof13456A6B7F9V1418C19A19F23Fserotypeofpneumococcalcapsularpolysaccharidesinthe13-valentpneumococcalconjugatedvaccinetheresultsshowedthatin4batchesofproductsthemeasuredvalueswere—4591—ChinJPharmAnal20143411between70%-130%oftheoreticalvalues.ConclusionThismethodisaccurateandfeasible.Itprovidesarefer-enceforthequalitycontrolofthe13-valentpneumococcalconjugatedvaccine.Keywordsnephelometry13-valentpneumococcalconjugatedvaccinepneumococcalcapsularpolysaccharidecontentsnon-competitivenephelometricprotocolsodiumhydroxidedesorption、、、、1-2。、、220d3。GAVI517412%4-6。27、。TT8。79。774、6B、9V、14、18C、19F23F61、3、5、6A、7F19A13。。、。1319ApH10s10。13、、、。1IMMAGE800、UDRI、I。1、3、4、5、6A、6B、7F、9V、14、18C、19A、19F、23FATCC2、8、9N、10A、11A、12F、15B、17F、20、22F、33FATCC1、3、4、5、6A、6B、7F、9V、14、18C、19A、19F、23F13D34821、12-002194、G22871、G21075、F63651、Sigma。22.12.1.120μL20μL200μL42.5min。2.1.2。1/200.3mol·L-110s1/200.1mol·L-1。2.1.31、3、4、5、6A、6B、7F、9V、14、18C、19A、19F、23F6B52.8μg·mL-126.4μg·mL-10.25mg·mL-14。2.22.2.16μg·mL-1I1、2、3、4、56μg·mL-1XY。1。1~6μg·mL-1。—5591—ChinJPharmAnal201434111Tab1Theresultsoflinearrelationshippneumococcalserotyperegressionequationcorrelationcoefficient1Y=200.43X-88.4640.99803Y=226.59X-85.6030.99924Y=129.60X-10.6120.99635Y=210.55X-12.7230.99976AY=92.611X-27.5380.99966BY=75.845X-44.9330.99717FY=50.983X-24.6510.99629VY=109.48X-78.9700.998114Y=106.50X-68.6560.999018CY=76.770X-39.1880.996919AY=151.34X-59.3230.999119FY=122.27X-62.3290.998123FY=63.615X-42.7440.99912.2.26RSD7%。2。2n=6Tab2Theresultsofrepeatabilitypneumococcalserotypemean/mg·mL-1RSD/%14.903.5734.153.2744.571.9354.031.536A4.073.276B9.551.827F4.844.719V4.476.68143.791.4318C4.153.2019A4.072.1019F4.664.4923F5.052.972.2.393mL30.25mg·mL-1AlPO44μg·mL-16B8μg·mL-11、3、9mL1、23μg·mL-1。70%~130%。RSD3。3Tab3Theresultsofrecoverypneumococcalserotypemeanrecovery/%RSD/%190.816.18399.599.80492.749.02593.445.296A92.745.236B99.3615.557F89.399.439V90.6913.2114104.613.7118C100.94.4919A109.26.7819F90.255.052399.199.332.2.4I10.25mg·mL-1AlPO42131、3、4、5、6A、6B、7F、9V、14、18C、19A、19F、23F2、8、10A、11A、12F、15B、17F、20、22F、33F0.25mg·mL-1AlPO44μg·mL-112、8、9N、10A、11A、12F、15B、17F、20、22F、33F0.25mg·mL-1AlPO44μg·mL-120.25mg·mL-1AlPO41μg·mL-1、24。9N112p0.05212p0.051、2、12p0.052、8、10A、11A、12F、15B、17F、20、22F、33F13。9N2p>0.059V9N9V。—6591—ChinJPharmAnal201434114Tab4Theresultsofspecificitypneumococcalserotypemeanresponsevalue1blank12blank21negativecontrol12negativecontrol2positivecontrol114.209.4913.5513.35128.1538.213.664.585.63136.9346.572.671.211.4552.7254.277.115.853.31217.166A3.623.584.666.9570.596B2.862.591.772.2641.867F1.273.884.055.0131.649V0.683.332.8489.3049.37146.225.142.411.6250.1218C2.996.883.841.7839.8219A3.259.813.068.8297.2619F1.334.442.486.9081.0923F2.653.973.653.7029.302.2.519ApHpH10s。10。2.3134“2.1.2”“2.1.1”5。136B8μg·mL-14μg·mL-1。470%~130%。31013。、、、、135μg·mL-1n=2Tab5Theresultsofpolysaccharidespneumococcalserotypesample12-002194sampleG22871sampleG21075sampleF6365114.103.993.233.6733.673.223.163.3044.854.814.744.8256.274.184.114.476A3.613.583.283.706B7.777.147.057.337F4.324.313.964.339V5.265.155.295.05143.554.133.834.1618C4.684.584.484.5519A4.243.853.863.6619F3.994.003.533.6823F4.594.674.444.98r0.991370%~130%13RSD7%。1、0.25mg·mL-1AlPO42、8、10A、11A、12F、15B、17F、20、22F、33F13—7591—ChinJPharmAnal201434119N9V9N9V9N----119V-