简介：ToinvestigatetheexpressionlevelsofthreeDsbproteingenes,dsbB,dsbDanddsbG,atdifferenttimepointspostC.trachomatisinfection,mousefibroblast12cellswerechosentobeinfectedwithC.trachomatisserovarFstrainF/IC-Cal-13.C.trachomatiselementarybody(EB)-infected12cellswereharvestedimmediatelyafterEBattachmentontothecellsandevery4hourspostinfection(hpi)till44hpifortotalRNApreparation.RT-PCRassayswerethenemployedtoamplifycDNAwithprimerpairswhicharespecifictoC.trachomatisdsbgenesdsbB,dsbD,dsbGandtufArespectively.Therela-tiveexpressionlevelsofDsbproteingeneswereevaluatedascDNAratiosofgenedsbtogenetufA.OurresultsshowedthatthetranscriptionofdsbGstartedfrom12hpiandgraduallyincreasedtill44hpi.ThetranscriptionofdsbBanddsbDweredetectedat16hpiandreachedtheirpeaksat28hpiand24-28hpi,respectively.Moreover,therewasobvioustranscriptionofdsbBatthelaterstage(44hpi),butnonefordsbDatthistimepoint.WecametotheconclusionthattheexpressionlevelsofthethreeDsbproteingenesaredifferentduringthedevelopmentalcycleofC.trachomatist.Theymayplayaroleinmid-to-latestageofthedevelopmentalcycleofC.trachomatis.

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简介：Thehousedustmites(Dermatophagoidesfarinae,Derf)arethemajorsourceofaeroallergensimplicatedintheexpressionofatopicdisorders,includingasthma,allergicrhinitisandatopicdermatitis.Inparticular,strongcircumstantialevidencesuggeststhathousedustmiteantigensareimportantprecipitatingfactorsofasthma.Manyhousedustmiteallergensareproteasesthatcanelicitairwayinflammationbystimulatingthereleaseofcytokinesfrombronchialepithelialcells.ToinvestigatewhetherDerfallergenproteasesinducedcytokineproductionfromtheepithelialcelllineBEAS-2B,BEAS-2Bcellswereculturedwith4differentconcentrationsofDerf(0.02,0.2,2,20μg/ml)for24-96h,afterwhichsupernatantswereassayedforinterleukin(IL)-6andIL-8withELISA.Reversetranscription-PCRwasalsoperformed.ThecellsheetswereintactthroughouttheobservationincontrolgroupwithoutanyexposuretoDerfantigen.IntheexperimentalgroupscellstreatedwithDerfallergenshowedchangesintheanchoragestatusofthemonolayer.Therewasasignificantincreaseinthelevelofcytokineproductioncomparedwiththeuntreatedsample.ThereleaseofIL-6andIL-8increasedinaconcentration-dependentmanner(P<0.05,respectively)withtheadditionofincreasingdosageofDerftothecellsheets.LevelsofIL-6andIL-8begantoriseat24hand48hafterallergenexposure,andtheyincreasedsignificantlyinthesupematantsat72hand96h.AtthesametimetheconcentrationdependenceofinductionofIL-6andIL-8expressionaswellasanincreaseintheexpressionofIL-6andIL-8mRNAmanifestedevidently.HDM-inducedairwayinflammationmayincludeDerf-mediatedreleaseofinflammatorymediators,andtheproteolyticactivityofanallergenmaystimulatethereleaseofproinflammatorycytokinesfromhumanbronchialepithelium.ItissuggestedthatIL-6andIL-8productionbybronchialepithelialcellsmayplayaroleinthepathogenesisofallergicasthma.

简介：【摘要】目的：探讨对严重水肿患者使用超声引导置入 18G静脉留置针的价值。方法：纳入时间为 2017年 12月到 2018年 12月，纳入 32例来我院就诊的严重水肿患者，对所有患者均行超声引导置入 18G静脉留置针。分析穿刺成功率。结果： 32例严重水肿患者中， 1次穿刺成功的患者有 30例，其占比例为 93.75%（ 30/32）； 2次及 2次以上穿刺成功的患者有 2例，其占比例为 6.25%（ 2/32）；穿刺完成的平均时间为（ 6.31±0.21） min。输液中出现轻度液体渗漏的患者有 1例，其占比例为 3.13%（ 1/32）；将穿刺针拔出后，并采取针对性处理，病情明显好转。结论：对严重水肿患者使用超声引导置入 18G静脉留置针，可将严重水肿患者的穿刺成功率予以提升，将治疗效果提高。

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