SARS病原体的检测及其在动物模型鉴定及疫苗评价中的应用
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R563.1 R-332

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“十五计划”863课题 (编号 :2 0 0 3AA2 0 82 0 5,2 0 0 3AA2 0 82 13 )


Application of RT-PCR to Identifying and Evaluating SARS Animal Model and Vaccine
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    摘要:

    目的:通过RT-PCR及病毒分离等方法,鉴定SARS感染性动物模型是否成立,并对疫苗效果进行评估。方法:选用3周岁的健康SPF级恒河猴8只,分为SARS实验感染动物模型组及疫苗组(Sino 3 SARS灭活疫苗20030904批肌内注射,免疫2次)。经鼻吸入Sino 1 SARS毒株,病毒攻击后7d动物进行安乐死。自病毒攻击后的第一天起每日连续采集动物咽拭子标本,病毒攻击后的第二天、第五天、第七天采集血浆标本。将标本进行病毒分离及RT-PCR检测.结果:模型组动物病毒攻击后第一天至第七天咽拭子RT-PCR检测均为阳性。注射疫苗组动物仅在病毒攻击后第一天咽拭子RT-PCR检测呈阳性。模型组动物血浆RB-PCR检测呈现阳性,疫苗组动物血浆RT-PCR检测均为阴性。病毒分离结果显示仅在模型动物咽拭子标本中分离到病毒,未在疫苗组动物的咽拭子标本分离到病毒.血浆标本中均未分离到病毒.结论:RT-PCR及病毒分离可以及时有效地检测出病毒在体内的复制情况,可作为模型鉴定、疫苗评估及药物筛选的重要手段。

    Abstract:

    Objective Using the methods of RT-PCR and virus isolation for verifying the SARS infection animal model and evaluating the effect of vaccine. Method We chose 3 years old SPF macaques, and inoculated the SARS coronavirus by dropping in their nose. Those infected animals served as SARS model to test SARS candidate vaccine. Throat swab specimens and the plasma specimens were collected in different time after monkeys were infected. Result After challenged, the throat swab specimens from the SARS infection animal model are positive every day till death and the throat swab specimens from vaccine immunized monkeys are positive only at the first day by the method of RT-PCR .The plasma specimens from the monkeys of SARS infection animal model are positive and the plasma specimens from the vaccine immunized monkeys are negative by the method of RT-PCR.We isolate the SARS virus on the the throat swab specimens from the SARS infection animal model. Conclusion These methods are fast and efficient. They can be used to identify the SARS infection animal model , evaluate the efficiency of vaccine and screen medicines.

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张扬清 鲍琳琳 孔琪 邓巍 涂新明 朱华 高虹 张兵林 佟巍 秦川. SARS病原体的检测及其在动物模型鉴定及疫苗评价中的应用[J].中国比较医学杂志,2004,(2):65~70.

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  • 最后修改日期:2004-02-13
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