简介：TheCoronaviridaefamilyischaracterizedbyanucleocapsidthatiscomposedofthegenomeRNAmoleculeincombinationwiththenucleoprotein(Nprotein)withinavirion.ThemoststrikingphysiochemicalfeatureoftheNproteinofSARS-CoVisthatitisatypicalbasicproteinwithahighpredictedpIandhighhydrophilicity,whichisconsistentwithitsfunctionofbindingtotheribophosphatebackboneoftheRNAmolecule.ThepredictedhighextentofphosphorylationoftheNproteinonmultiplecandidatephosphorylationsitesdemonstratesthatitwouldberelatedtoimportantfunctions,suchasRNA-bindingandlocalizationtothenucleolusofhostcells.SubsequentstudyshowsthatthereisanSR-richregionintheNproteinandthisregionmightbeinvolvedintheprotein-proteininteraction.TheabundantantigenicsitespredictedintheNprotein,aswellasexperimentalevidencewithsynthesizedpolypeptides,indicatethattheNproteinisoneofthemajorantigensoftheSARS-CoV.Comparedwithotherviralstructuralproteins,thelowvariationrateoftheNproteinwithregardstoitssizesuggestsitsimportancetothesurvivalofthevirus.

简介：本文用空间建模的方法模拟了2003年中国非典疫情的发生发展过程机制．我们基于省市数据建立了一个地方性天气现象与非典疫情爆发的线性模型，并通过空间计量经济学方法经验地证实了：非典疫情就像其它呼吸系统流行病一样，主要在冬季流行、夏季消失．同时，我们基于空间误差模型计算的误差协方差矩阵揭示了：在整个非典疫情发展的时空过程中，携带病毒的旅行者是跨区域传播的基本途径；这一传播方式使得首都成为整个研究区（大陆、台湾、香港、澳门）的疫情传播中心，而这种传播方向与力度是可以估算的。

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简介：AbstractCoronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), declared as a pandemic due to its rapid spread worldwide. In this study, we investigate the genetic diversity and genomic epidemiology of SARS-CoV-2, using 22 virus genome sequences reported by three different laboratories in Morocco till June 7,2020, as well as 40,366 virus genomes from all around the world. The SARS-CoV-2 genomes from Moroccan patients revealed 62 mutations, of which 30 were mis-sense mutations. The mutations Spike_D614G and NSP12_P323L were present in all the 22 analyzed sequences, followed by N_G204R and N_R203K, which occurred in 9 among the 22 sequences. The mutations NSP10_R134S, NSP15_D335N, NSP16_I169L, NSP3_L431H, NSP3_P1292L and Spike_V6F occurred once in Moroccan sequences, with no record in other sequences worldwide. Phylogenetic analyses revealed that Moroccan SARS-CoV-2 genomes included 9 viruses belonging to Clade 20A, 9 to Clade 20B and 2 to Clade 20C, suggesting that the epidemic spread in Morocco did not display a predominant SARS-CoV-2 route. Therefore, multiple and unrelated introductions of SARS-CoV-2 into Morocco through different routes have occurred, giving rise to the diversity of virus genomes in the country. Further, in all probability, the SARS-CoV-2 circulated in a cryptic way in Morocco, starting from January 15, 2020 before the first case was officially discovered on March 2, 2020.

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简介：研究SARS对深圳南山区高星级商务酒店的影响,研究SARS对深圳南山区高星级商务酒店的影响,SARS对深圳酒店业影响初步研究——以深圳南山区高星级商务酒店为例

简介：研究SARS对深圳南山区高星级商务酒店的影响,SARS对深圳酒店业影响初步研究——以深圳南山区高星级商务酒店为例,深圳中南海滨酒店与蛇口南海酒店入住率比较）3.3.3SARS影响南山区商务酒店餐饮及康体娱乐情况调查关于SARS对旅游与服务业的影响

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简介：<正>治疗组和对照组各14例,均给予抗SARS西医常规治疗,包括免疫增强剂(丙种球蛋白、胸腺肽)、皮质激素(甲基氢化泼尼松)、抗病毒(利巴韦林)、抗生素(阿霉素、左氧氟沙星及头孢类)、无创呼吸机等。治疗组根据中医辨证并利用生物声效应仪进行药物筛选,静脉给穿琥宁注射液、参麦注射液,口服护肺清痧饮、解毒止痛胶囊、逐饮散强胶囊等,用清痧灵喷

简介：严重急性呼吸综合征(severeacuterespiratorysyndrome,SARS)是由SARS冠状病毒引起的一种急性呼吸道传染病.患者中青壮年占绝大多数,老年患者虽然数量较少,但由于其生理功能的特点,其疾病的流行病学特点、临床表现、预后和治疗都具有一定的特殊性.

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简介：WestudiedstructuralandimmunologicalpropertiesoftheSARS-CoVM(mem-brane)protein,basedoncomparativeanalysesofsequencefeatures,phylogeneticinvestigation,andexperimentalresults.TheMproteinispredictedtocontainatriple-spanningtransmembrane(TM)region,asingleN-glycosylationsitenearitsN-terminusthatisintheexteriorofthevirion,andalongC-terminalregionintheinterior.TheMproteinharborsahighersubstitutionrate(0.6%correlatedtoitssize)amongviralopenreadingframes(ORFs)frompublisheddata.ThefoursubstitutionsdetectedintheMprotein,whichcausenon-synonymouschanges,canbeclassifiedintothreetypes.OneofthemresultsinchangesofpI(isoelectricpoint)andcharge,affectingantigenicity.ThesecondchangeshydrophobicityoftheTMregion,andthethirdonerelatestohydrophilicityoftheinteriorstructure.PhylogenetictreebuildingbasedonthevariationsoftheMproteinappearstosupportthenon-humanoriginofSARS-CoV.Toinvestigateitsimmunogenicity,wesynthesizedeightoligopeptidescovering69.2%oftheentireORFandscreenedthembyusingELISA(enzyme-linkedimmunosorbentassay)withserafromSARSpatients.Theresultsconfirmedourpredictionsonantigenicsites.

简介：急性下呼吸道感染是困扰世界的健康难题，尤其是儿童。约30％～50％的急性下呼吸道感染由病毒引起，其中流感和呼吸道合胞病毒在人类中造成最大的疾病负担。2003年由冠状病毒引起的重症急性呼吸综合征（SARS）的突然出现，以及由此发生的世界范围内的疫情，表明人类的呼吸道病毒感染可能起源于动物。很多不同类型的A型流感病毒的自然宿主是动物，也就存在着动物源性感染的威胁和全球大流行的可能性。

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简介：Inthefaceoftheworldwidethreatofsevereacuterespiratorysyndrome(SARS)tohumanlife,someofthemosturgentchallengesaretodevelopfastandaccurateanalyticalmethodsforearlydiagnosisofthisdiseaseaswellastocreateasafeanti-viralvaccineforprevention.Totheseends,weinvestigatedtheantigenicityofthespikeprotein(Sprotein),amajorstructuralproteinintheSARS-coronavirus(SARS-CoV).BaseduponthetheoreticalanalysisforhydrophobicityoftheSprotein,18peptidesweresynthesized.UsingEnzyme-LinkedImmunosorbentAssay(ELISA),thesepeptideswerescreenedintheserafromSARSpatients.Accordingtotheseresults,twofragmentsoftheSgenewereamplifiedbyPCRandclonedintopET-32a.BothSfragmentswereexpressedintheBL-21strainandfurtherpurifiedwithanaffinitychromatography.TheserecombinantSfragmentswereconfirmedtohavepositivecross-reactionswithSARSsera,eitherbyWesternblotorbyELISA.OurresultsdemonstratedthatthepotentialepitoperegionswerelocatedatCodons469-882intheSprotein,andoneepitopesitewaslocatedatCodons599-620.IdentificationofantigenicregionsintheSARS-CoVSproteinmaybeimportantforthefunctionalstudiesofthisvirusorthedevelopmentofclinicaldiagnosis.

简介：机械通气是治疗目前在全球范围流行的非典型肺炎（SARS）的主要方法之一。SARS导致难治性ARDS后，需要采用包括允许性高碳酸血症和开放肺在内的肺保护性通气策略。而尽可能地采用无创或微创的方法，在重症监护病人身上连续、同步、实时、准确地监测心肺功能可以直接指导机械通气策略的实施和综合评估实施效果。

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简介：二零零年初，一场突如其来的SARS疫情在极短的时间冲击了中国整个社会，几十月后，全国的SARS疫情得到了控制，但SARS产生的冲击效应将长期存在，从各个方面．各个行业影响着中国社会，尤其是医学，生物医学工程等行业。