采用超高效液相色谱-串联质谱建立动物组织中丙哌维林、贝那替嗪、哌仑西平、美卡拉明等10种抗胆碱类药物残留检测方法。样品经过1%甲酸乙腈提取、Oasis PRi ME HLB柱净化后,经Acquity UPLC BEH C18(50 mm×2.1 mm,1.7μm)分离,以...采用超高效液相色谱-串联质谱建立动物组织中丙哌维林、贝那替嗪、哌仑西平、美卡拉明等10种抗胆碱类药物残留检测方法。样品经过1%甲酸乙腈提取、Oasis PRi ME HLB柱净化后,经Acquity UPLC BEH C18(50 mm×2.1 mm,1.7μm)分离,以甲醇和0.1%甲酸水溶液为流动相进行梯度洗脱,正离子MRM信号采集数据,10种抗胆碱类药物能在10.5 min内完好分离,在1.0~50.0μg/L浓度范围内,10种抗胆碱类药物线性良好,相关系数均在0.9951以上;最低定量限均低于1.0μg/kg,通过1.0、2.0、10μg/kg三个水平的添加回收实验表明,猪肉中平均回收率在64.7%~108.2%,批内变异系数为1.09%~10.5%,批间变异系数为2.31%~11.4%,猪肝中平均回收率在62.6%~108.0%,批内变异系数为0.38%~10.7%,批间变异系数为2.24%~11.2%。该方法较好的满足了动物组织中该药物多残留检测要求,对有效防范药物滥用和非法添加行为和打击注水肉起到了一定的技术支撑作用。展开更多
Porcine cimovirus （PCV） is the smallest animal virus so far and has two serotypes. PCV1 is nonpathogenic, but PCV2 is pathogenic and causes post-weaning multisystemic wasting syndrome （ PMWS）. Factors to induce PM...Porcine cimovirus （PCV） is the smallest animal virus so far and has two serotypes. PCV1 is nonpathogenic, but PCV2 is pathogenic and causes post-weaning multisystemic wasting syndrome （ PMWS）. Factors to induce PMWS include immunity and infection status of sows, infec- tion time, mixed infection, PCV2 variants, physical status of gilts, and feeding management. For final diagnosis, histopathological changes and ex- istence of PCV2 in lymphoid tissues are professional standards, because fluorescence quantitative RT-PCR is not enough specific or sensitive. The commemial PCV2 vaccines can reduce occurrence of PMWS and PCV-related diseases. This paper reviews recent advances in epidemiology of PCV2 as well as diagnosis and control of PMWS.展开更多
文摘采用超高效液相色谱-串联质谱建立动物组织中丙哌维林、贝那替嗪、哌仑西平、美卡拉明等10种抗胆碱类药物残留检测方法。样品经过1%甲酸乙腈提取、Oasis PRi ME HLB柱净化后,经Acquity UPLC BEH C18(50 mm×2.1 mm,1.7μm)分离,以甲醇和0.1%甲酸水溶液为流动相进行梯度洗脱,正离子MRM信号采集数据,10种抗胆碱类药物能在10.5 min内完好分离,在1.0~50.0μg/L浓度范围内,10种抗胆碱类药物线性良好,相关系数均在0.9951以上;最低定量限均低于1.0μg/kg,通过1.0、2.0、10μg/kg三个水平的添加回收实验表明,猪肉中平均回收率在64.7%~108.2%,批内变异系数为1.09%~10.5%,批间变异系数为2.31%~11.4%,猪肝中平均回收率在62.6%~108.0%,批内变异系数为0.38%~10.7%,批间变异系数为2.24%~11.2%。该方法较好的满足了动物组织中该药物多残留检测要求,对有效防范药物滥用和非法添加行为和打击注水肉起到了一定的技术支撑作用。
基金funded by the Chinese Academy of Science Knowledge Innovation Project ( KZCX2-EW-QN411,Kscx2-Yw-N-051)the National Basic Research Program of China( 2009CB118800)
文摘Porcine cimovirus （PCV） is the smallest animal virus so far and has two serotypes. PCV1 is nonpathogenic, but PCV2 is pathogenic and causes post-weaning multisystemic wasting syndrome （ PMWS）. Factors to induce PMWS include immunity and infection status of sows, infec- tion time, mixed infection, PCV2 variants, physical status of gilts, and feeding management. For final diagnosis, histopathological changes and ex- istence of PCV2 in lymphoid tissues are professional standards, because fluorescence quantitative RT-PCR is not enough specific or sensitive. The commemial PCV2 vaccines can reduce occurrence of PMWS and PCV-related diseases. This paper reviews recent advances in epidemiology of PCV2 as well as diagnosis and control of PMWS.
