为全面、客观分析犬猫肠道菌群研究的发展脉络和热点方向,本研究采用文献计量学方法,检索Web of Science核心数据库近20年关于犬猫肠道菌群的文章,应用软件Citespace、VOSviewer和Microsoft Excel对发文量、发文时间、发文国家和机构、...为全面、客观分析犬猫肠道菌群研究的发展脉络和热点方向,本研究采用文献计量学方法,检索Web of Science核心数据库近20年关于犬猫肠道菌群的文章,应用软件Citespace、VOSviewer和Microsoft Excel对发文量、发文时间、发文国家和机构、发文作者、发文期刊、文献共被引频次和关键词进行分析。结果表明:1)在犬猫肠道菌群领域,近20年Web of Science共发表相关文献413篇,且发文量呈逐年上升趋势。2)美国得克萨斯A&M大学是发文最多的机构,形成了以学者Suchodolski和Swanson为核心的学术共同体;PLOS ONE是发文量最多的期刊。3)研究方向可分为4方面,分别是营养素对犬猫肠道菌群的影响、益生菌对犬猫肠道菌群的影响、疾病和犬猫肠道菌群紊乱的相关性以及肥胖和犬猫肠道菌群的相关性。犬猫食物补充剂如何通过调控肠道菌群进而提高健康水平是未来研究的关注重点。综上,近年来犬猫肠道菌群相关研究正逐步受到研究者的关注,本研究为改善犬猫的健康水平和生活质量提供重要的参考依据。展开更多
Recently,increasing natural infection cases and experimental animal challenge studies demonstrated domestic cats are susceptible to multiple subtypes influenza A virus(IAV)infections.Notably,some subtype IAV strains c...Recently,increasing natural infection cases and experimental animal challenge studies demonstrated domestic cats are susceptible to multiple subtypes influenza A virus(IAV)infections.Notably,some subtype IAV strains could circulate in domestic cats after cross-species transmission and even infected humans,posing a threat to public health.Host factors related to viral polymerase activity could determine host range of IAV and acidic nuclear phosphoprotein 32(ANP32)is the most important one among them.However,role of cat-derived ANP32 on viral polymerase activity and host range of IAV is still unknown.In the present study,a total of 10 feline ANP32(feANP32)splice variants(including 5 feANP32A,3 feANP32B,and 2 feANP32E)were obtained from domestic cats by RT-PCR.Sequence alignment results demonstrated amino acid deletions and/or insertions occurred among feANP32 variants,but all feANP32 proteins were primarily localized to cell nucleus.Minigenome replication systems for several representative IAV strains were established and the support ability of feANP32 on IAV polymerase activity was estimated.The results indicated that most feANP32A and feANP32B splice variants were able to support all the tested IAV strains,though the support activity of a single feANP32 protein on polymerase activity varied among different IAV strains.In addition,the role of feANP32 in supporting H3N2 canine influenza virus was determined by investigating viral replication in vitro.Collectively,our study systematically investigated the support activity of feANP32 on IAV,providing a clue for further exploring the mechanism of susceptibility of cats to IAV.展开更多
为建立一种快速、准确检测猫等孢球虫的方法,本研究采用GenBank登录的猫等孢球虫18s r RNA基因序列(L76471.1)保守区设计并合成1对特异引物,从经显微镜检测为猫等孢球虫阳性的粪便样品中选取一份提取猫等孢球虫DNA,以其为模板经PCR扩增...为建立一种快速、准确检测猫等孢球虫的方法,本研究采用GenBank登录的猫等孢球虫18s r RNA基因序列(L76471.1)保守区设计并合成1对特异引物,从经显微镜检测为猫等孢球虫阳性的粪便样品中选取一份提取猫等孢球虫DNA,以其为模板经PCR扩增猫等孢球虫18s r RNA基因片段,构建重组质粒标准品p UCm-T-IF1并经PCR及测序鉴定正确后作为质粒标准品。通过优化反应条件,建立了猫等孢球虫的荧光定量PCR检测方法。特异性试验结果显示,该方法可以特异性的检测猫等孢球虫DNA,对猫贾第虫、猫滴虫、猫细小病毒、猫冠状病毒DNA/cDNA的检测结果均为阴性;对重组质粒标准品的检测限可达6.26×10^(2)拷贝/μL。批内和批间重复性试验的变异系数分别是0.61%~2.06%和0.32%~0.50%。表明本研究建立的方法特异性强、敏感性高、重复性好。利用该方法对23份临床疑似猫等孢球虫感染的样品进行检测,荧光定量PCR的检出率为78.26%(18/23),明显高于漂浮法检测的阳性率43.48%(10/23),并且经漂浮法检测为阳性的样品采用该方法检测均为阳性。结果表明,本研究建立的荧光定量PCR方法能够更准确的检测猫等孢球虫的感染,为开展猫等孢球虫病和流行病学调查提供更准确的检测手段。展开更多
文摘为全面、客观分析犬猫肠道菌群研究的发展脉络和热点方向,本研究采用文献计量学方法,检索Web of Science核心数据库近20年关于犬猫肠道菌群的文章,应用软件Citespace、VOSviewer和Microsoft Excel对发文量、发文时间、发文国家和机构、发文作者、发文期刊、文献共被引频次和关键词进行分析。结果表明:1)在犬猫肠道菌群领域,近20年Web of Science共发表相关文献413篇,且发文量呈逐年上升趋势。2)美国得克萨斯A&M大学是发文最多的机构,形成了以学者Suchodolski和Swanson为核心的学术共同体;PLOS ONE是发文量最多的期刊。3)研究方向可分为4方面,分别是营养素对犬猫肠道菌群的影响、益生菌对犬猫肠道菌群的影响、疾病和犬猫肠道菌群紊乱的相关性以及肥胖和犬猫肠道菌群的相关性。犬猫食物补充剂如何通过调控肠道菌群进而提高健康水平是未来研究的关注重点。综上,近年来犬猫肠道菌群相关研究正逐步受到研究者的关注,本研究为改善犬猫的健康水平和生活质量提供重要的参考依据。
基金supported by the National Natural Science Foundation of China(32172826).
文摘Recently,increasing natural infection cases and experimental animal challenge studies demonstrated domestic cats are susceptible to multiple subtypes influenza A virus(IAV)infections.Notably,some subtype IAV strains could circulate in domestic cats after cross-species transmission and even infected humans,posing a threat to public health.Host factors related to viral polymerase activity could determine host range of IAV and acidic nuclear phosphoprotein 32(ANP32)is the most important one among them.However,role of cat-derived ANP32 on viral polymerase activity and host range of IAV is still unknown.In the present study,a total of 10 feline ANP32(feANP32)splice variants(including 5 feANP32A,3 feANP32B,and 2 feANP32E)were obtained from domestic cats by RT-PCR.Sequence alignment results demonstrated amino acid deletions and/or insertions occurred among feANP32 variants,but all feANP32 proteins were primarily localized to cell nucleus.Minigenome replication systems for several representative IAV strains were established and the support ability of feANP32 on IAV polymerase activity was estimated.The results indicated that most feANP32A and feANP32B splice variants were able to support all the tested IAV strains,though the support activity of a single feANP32 protein on polymerase activity varied among different IAV strains.In addition,the role of feANP32 in supporting H3N2 canine influenza virus was determined by investigating viral replication in vitro.Collectively,our study systematically investigated the support activity of feANP32 on IAV,providing a clue for further exploring the mechanism of susceptibility of cats to IAV.
文摘为建立一种快速、准确检测猫等孢球虫的方法,本研究采用GenBank登录的猫等孢球虫18s r RNA基因序列(L76471.1)保守区设计并合成1对特异引物,从经显微镜检测为猫等孢球虫阳性的粪便样品中选取一份提取猫等孢球虫DNA,以其为模板经PCR扩增猫等孢球虫18s r RNA基因片段,构建重组质粒标准品p UCm-T-IF1并经PCR及测序鉴定正确后作为质粒标准品。通过优化反应条件,建立了猫等孢球虫的荧光定量PCR检测方法。特异性试验结果显示,该方法可以特异性的检测猫等孢球虫DNA,对猫贾第虫、猫滴虫、猫细小病毒、猫冠状病毒DNA/cDNA的检测结果均为阴性;对重组质粒标准品的检测限可达6.26×10^(2)拷贝/μL。批内和批间重复性试验的变异系数分别是0.61%~2.06%和0.32%~0.50%。表明本研究建立的方法特异性强、敏感性高、重复性好。利用该方法对23份临床疑似猫等孢球虫感染的样品进行检测,荧光定量PCR的检出率为78.26%(18/23),明显高于漂浮法检测的阳性率43.48%(10/23),并且经漂浮法检测为阳性的样品采用该方法检测均为阳性。结果表明,本研究建立的荧光定量PCR方法能够更准确的检测猫等孢球虫的感染,为开展猫等孢球虫病和流行病学调查提供更准确的检测手段。