Article(id=1307013526162268346, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307013423896753139, articleNumber=null, orderNo=null, doi=10.11843/j.issn.0366-6964.2026.03.048, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1746547200000, receivedDateStr=2025-05-07, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1789545907773, onlineDateStr=2026-09-16, pubDate=1774195200000, pubDateStr=2026-03-23, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789545907773, onlineIssueDateStr=2026-09-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789545907773, creator=13701087609, updateTime=1789545907773, updator=13701087609, issue=Issue{id=1307013423896753139, tenantId=1146029695717560320, journalId=1306274286668972124, year='2026', volume='57', issue='3', pageStart='1177', pageEnd='1776', issueExtLink='null', onlineDate='null', pubDate='1774195200000', pubDateStr='2026-03-23', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1789545883392, creator='13701087609', updateTime=1789609930841, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1307282058464743901, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307013423896753139, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1307282058464743902, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307013423896753139, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1752, endPage=1758, ext={EN=ArticleExt(id=1307013526376177851, articleId=1307013526162268346, tenantId=1146029695717560320, journalId=1306274286668972124, language=EN, title=Analysis of Genomic Characteristics and Pathogenicity of Six PRRSV Isolated Strains, columnId=1307007462452777247, journalTitle=Acta Veterinaria et Zootechnica Sinica, columnName=RESEARCH NOTES, runingTitle=null, highlight=null, articleAbstract=
The aim of this study was to understand the genomic characteristics and pathogenicity of epidemic porcine reproductive and respiratory syndrome virus (PRRSV) strains in China, and to explore their recombination and related variations. Pathological samples were collected, processed, and subjected to three consecutive blind passages in Marc-145 and PAM cells. Plaque purification was performed post-indirect IFA. Complete genomic sequences of the isolated strains were sequenced and analyzed. Piglet infection experiment was conducted for systematic assessment of the strains’ pathogenicity. In this study, six PRRSV type 2 strains were isolated and named WH-2021A, GZ-2021W, SX-2022M, HB-2021A, H-1, and C-1. WH-2021A, GZ-2021W, and SX-2022M belong to NADC30-like strains of L1.8.GZ-2021W is a recombinant strain with NADC30 as the main parent and highly pathogenic strain HuN4 as the secondary parent. SX-2022M is a recombinant strain with NADC30 as the main parent and classical strain CH-1a as the secondary parent. HB-2021A belongs to the L3.5 QYYZ branch, while H-1 and C-1 belong to the L8.7 highly pathogenic strain and the L5.1 classical strain, respectively. Piglets infection experiments showed that WH-2021A had the strongest pathogenicity, and the mortality rate of piglets was 100%, followed by H-1, with a mortality rate of 80%. The two recombinant strains of GZ-2021W and SX-2022M could cause a series of clinical lesions, but no piglets died. Pathological examination showed that the lesions of lung, lymph nodes and tonsils in the infected group were obvious. In this study, 6 epidemic PRRSV strains were isolated, and their genomic characteristics and pathogenicity were explored, which provides early warning of PRRS immune prevention, as well as critical data support for the recombinantion and evolutionary analysis of RRRSV-2.
, authors=Gang LI
1, 2, Shengnan RUAN
1, 2, Xuexiang YU
1, 2, Shuo ZHANG
3, Ping BAI
3, Wentao LI
1, 2, Qigai HE
1, 2, Yunbo JIANG
1, 2, authorsList=Gang LI, Shengnan RUAN, Xuexiang YU, Shuo ZHANG, Ping BAI, Wentao LI, Qigai HE, Yunbo JIANG, authorCompany=null, correspAuthors=Yunbo JIANG, authorNote=null, correspAuthorsNote=
, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1307013529861644484, articleId=1307013526162268346, tenantId=1146029695717560320, journalId=1306274286668972124, language=CN, title=六株PRRSV分离毒株的基因组特征与致病性分析, columnId=1307007463681708323, journalTitle=畜牧兽医学报, columnName=研究简报, runingTitle=null, highlight=null, articleAbstract=
旨在了解我国当前猪繁殖与呼吸综合征病毒(PRRSV)流行毒株的病原特征与致病性,探究其重组等变异情况。采集处理病料后使用Marc-145细胞和PAM细胞连续盲传三代,IFA检测后空斑纯化,测序分析分离毒株的全基因组序列,仔猪感染试验系统评估分离毒株的致病性。结果显示:本研究分离出6株2型PRRSV毒株,命名为WH-2021A、GZ-2021W、SX-2022M、HB-2021A、H-1和C-1。WH-2021A、GZ-2021W、SX-2022M属于L1.8的NADC30-like毒株,其中GZ-2021W是以NADC30为主要亲本,高致病毒株HuN4为次要亲本的重组毒株,SX-2022M是以NADC30为主要亲本,经典毒株CH-1a为次要亲本的重组毒株。HB-2021A属于L3.5 QYYZ分支,H-1和C-1分别属于L8.7高致病性毒株和L5.1经典毒株。仔猪感染试验发现,WH-2021A致病性最强,仔猪死亡率达100%,其次是H-1,死亡率达80%,GZ-2021W和SX-2022M两株重组毒株可引起一系列临床病变,但无仔猪死亡。病理剖检发现感染组猪肺、淋巴结及扁桃体病变均明显。本研究分离到6株2型PRRSV毒株,探究了其基因组特征和致病性,为PRRS免疫防控提供早期预警以及为PRRSV-2的重组进化分析提供重要的数据支撑。
, authors=李刚
1, 2, 阮胜男
1, 2, 于学祥
1, 2, 张硕
3, 白平
3, 李文涛
1, 2, 何启盖
1, 2, 江云波
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1.National Key Laboratory of Agricultural Microbiology,Huazhong Agricultural University,Wuhan 430070,China
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1.华中农业大学 农业微生物资源发掘与利用全国重点实验室,武汉 430070
2.华中农业大学动物医学院,武汉 430070, bio={"content":"
阮胜男,博士,主要从事动物传染病的研究,E-mail: 2215243751@qq.com
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1.National Key Laboratory of Agricultural Microbiology,Huazhong Agricultural University,Wuhan 430070,China
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1.华中农业大学 农业微生物资源发掘与利用全国重点实验室,武汉 430070
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3, address=
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The recombination analysis of GZ-2021W and SX-2022M isolate based on the whole genomesA. Recombination analysis of GZ-2021W strain using RDP4 software; B. Recombination analysis of SX-2022M strain using RDP4 software
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基于全基因组的GZ-2021W和SX-2022M重组分析A.GZ-2021W毒株RDP4软件重组分析;B.SX-2022M毒株RDP4软件重组分析
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Clinical manifestations and test results of each group within 28 days after infectionA. Changes in body temperature; B. Average daily gain; C. Death of piglets in each group; D. Tissue viral load; E. Anticoagulant viral load; F. Oral viral load; G. Changes of N antibody in serum; H. Serum neutralization titer
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感染后28 d内各组临床表现及检测结果A.体温变化;B.平均日增重;C.各组猪死亡情况;D.组织中病毒载量;E.抗凝血中病毒载量;F.口腔病毒载量;G.血清中N抗体变化情况;H.血清中和效价
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