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IBRV与MB二温式多重PCR检测方法的建立 Title:EstablishmentofIBRVandMBDual-TemperatureMultiplexPCRDetectionMethod Abstract: Infectiousbovinerhinotracheitisvirus(IBRV)andMycoplasmabovis(MB)aretwoimportantpathogensthatprimarilyaffectcattle.Developinganefficientandaccuratedetectionmethodforthesepathogensiscrucialforcontrollingandpreventingthespreadofthediseasestheycause.Thisstudyaimstoestablishadual-temperaturemultiplexPCRdetectionmethodforIBRVandMBthatprovideshighsensitivityandspecificity. Introduction: IBRVandMBinfectionsposesignificanteconomiclossestothecattleindustryworldwide.Traditionaldetectionmethodsforthesepathogensaretime-consumingandlabor-intensive.Therefore,itisimperativetoestablisharapidandreliablediagnosticmethodforsimultaneousdetectionofIBRVandMB.MultiplexPCR,whichallowsmultipletargetgenestobeamplifiedsimultaneously,hasshowngreatpotentialinthefieldofpathogendetection.Thisstudyaimstoestablishadual-temperaturemultiplexPCRdetectionmethodforIBRVandMB. Methods: 1.Primerdesign:SpecificprimersforIBRVandMBtargetgenesweredesignedusingbioinformaticstools.Theprimersweredesignedtoamplifydifferentregionsofthetargetgenestoensurespecificity. 2.DNAextraction:DNAsampleswereextractedfromclinicalsamples(nasalswabs,lungtissues,orbloodsamples)usingacommercialDNAextractionkit. 3.MultiplexPCRoptimization:Theoptimalreactionconditions,includingprimerconcentrations,magnesiumionconcentration,cyclingparameters,andenzymeconcentration,weretestedandoptimizedusingpureDNAtemplates. 4.Sensitivityandspecificityevaluation:Thesensitivityandspecificityofthedual-temperaturemultiplexPCRmethodwereevaluatedusingknownpositiveandnegativesamples.TheresultswerecomparedwiththoseofconventionalPCRandsequencingmethods. Results: 1.Primerdesign:SpecificprimerstargetingtheIBRVandMBgenesweresuccessfullydesignedbasedongenesequencesavailableinpublicdatabases. 2.MultiplexPCRoptimization:Theoptimalreactionconditionsweredeterminedasfollows:denaturationat95°Cfor2minutes,followedby35cyclesofdenaturationat95°Cfor30seconds,annealinga