[Objectives]To study the toxic effect and antiviral activity of anthraquinone extract of Polygonum cuspidatum on infection of Koi herpes virus(KHV).[Methods]The MTT method and CPE microscopy were used to detect the co...[Objectives]To study the toxic effect and antiviral activity of anthraquinone extract of Polygonum cuspidatum on infection of Koi herpes virus(KHV).[Methods]The MTT method and CPE microscopy were used to detect the common carp brain(CCB)cytotoxicity of the P.cuspidatum anthraquinone extract in 48 h.Eight groups of different concentrations of the P.cuspidatum anthraquinone extract 1.96,3.91,7.28,15.63,31.25,62.5,125,250μg/mL experimental groups and a control group without drug effect were set up.After determining the maximum non-toxic range of the P.cuspidatum anthraquinone extract,the viral replication inhibition test was carried out.[Results]The concentration of the P.cuspidatum anthraquinone extract 31.25μg/mL was recognized as the maximum non-toxic concentration.The survival rate of CCB cells was higher than 80%,and the toxic dose(CC50)of the drug for 50%cell death was(72.67±2.12)μg/mL.The maximum inhibition rate of the P.cuspidatum anthraquinone extract was 78.63%±5.47%at a concentration of 31.25μg/mL,and the 50%effective drug dose(IC50)for inhibiting the virus was(13.67±0.47)μg/mL,and the therapeutic index(TI)was 5.48±0.49.In the direct virus killing test,the highest virus inhibition rate was 32.21%.[Conclusions]Under the experimental conditions,it can be concluded that the P.cuspidatum anthraquinone extract has high anti-KHV activity,and at the same time.It is expected to lay a theoretical foundation for the research of P.cuspidatum anthraquinone extract against KHV.展开更多
为了建立可同时检测鲤浮肿病毒(Carp edema virus,CEV)和锦鲤疱疹病毒(Kio herpesvirus,KHV)的检测方法,本研究根据CEV P4a基因保守序列,对英国环境、渔业水产养殖研究中心(Center for Environment,Fisheries and Aquaculture Science,C...为了建立可同时检测鲤浮肿病毒(Carp edema virus,CEV)和锦鲤疱疹病毒(Kio herpesvirus,KHV)的检测方法,本研究根据CEV P4a基因保守序列,对英国环境、渔业水产养殖研究中心(Center for Environment,Fisheries and Aquaculture Science,CEFAS)设计合成的引物序列进行优化,合成1对特异性引物和1条用FAM荧光基团标记的TaqMan探针;根据KHV ORF7基因保守序列,设计筛选1对特异性引物和1条用VIC荧光基团标记的TaqMan探针。优化反应条件,建立了CEV和KHV双重实时荧光定量PCR检测方法。结果显示该方法特异性强,与其它水生动物病毒无交叉反应;灵敏度高,对CEV和KHV的检测限均为15拷贝数/μL;组内重复与组间重复的平均变异系数小于3%。本研究建立的方法具有快速、特异、敏感等优点,可用于CEV和KHV的快速检测。展开更多
基金the Modern Agricultural Industrial Technology System of the Ministry of Agriculture and Rural Affairs and the Ministry of FinanceProject of Fundamental Research Funds for Jilin Provincial Public Welfare Research Institutes(JSCYJK202102).
文摘[Objectives]To study the toxic effect and antiviral activity of anthraquinone extract of Polygonum cuspidatum on infection of Koi herpes virus(KHV).[Methods]The MTT method and CPE microscopy were used to detect the common carp brain(CCB)cytotoxicity of the P.cuspidatum anthraquinone extract in 48 h.Eight groups of different concentrations of the P.cuspidatum anthraquinone extract 1.96,3.91,7.28,15.63,31.25,62.5,125,250μg/mL experimental groups and a control group without drug effect were set up.After determining the maximum non-toxic range of the P.cuspidatum anthraquinone extract,the viral replication inhibition test was carried out.[Results]The concentration of the P.cuspidatum anthraquinone extract 31.25μg/mL was recognized as the maximum non-toxic concentration.The survival rate of CCB cells was higher than 80%,and the toxic dose(CC50)of the drug for 50%cell death was(72.67±2.12)μg/mL.The maximum inhibition rate of the P.cuspidatum anthraquinone extract was 78.63%±5.47%at a concentration of 31.25μg/mL,and the 50%effective drug dose(IC50)for inhibiting the virus was(13.67±0.47)μg/mL,and the therapeutic index(TI)was 5.48±0.49.In the direct virus killing test,the highest virus inhibition rate was 32.21%.[Conclusions]Under the experimental conditions,it can be concluded that the P.cuspidatum anthraquinone extract has high anti-KHV activity,and at the same time.It is expected to lay a theoretical foundation for the research of P.cuspidatum anthraquinone extract against KHV.
