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犬2型腺病毒SY株的致弱驯化
引用本文:范泉水,夏咸柱,邱薇,黄耕,何洪彬,余春,乔军,武银莲,殷震.犬2型腺病毒SY株的致弱驯化[J].中国兽药杂志,2001,35(6):7-9.
作者姓名:范泉水  夏咸柱  邱薇  黄耕  何洪彬  余春  乔军  武银莲  殷震
作者单位:1. 成都军区联勤部军事医学研究所,云南,昆明,650031
2. 中国人民解放军农牧大学军事兽医研究所,吉林,长春,130062
3. 东北农业大学,黑龙江,哈尔滨,150030
4. 北京军区军犬队,北京,昌平,100021
5. 塔里木农垦大学,新疆,塔里木,843300
基金项目:军队青年基金及全军开放试验室基金课题
摘    要:作者对分离和系统鉴定的一株犬传染性喉气管炎病毒(犬2型腺病毒)SY(沈阳)株,用犬肾传代细胞MDCK进行了致弱驯化,每驯化15代做一次初步的犬的安全性试验。用大剂量不同代次病毒对易感犬进行人工感染试验,每天观察犬的临床症状及白细胞总数,并于接毒后的第5d安乐死,作病理解剖学和病理组织学检查,易感犬的感染试验结果表明,SY株在犬贤细胞上传15代时对犬的致病力已降低,30代时对犬已不引起发烧,精神沉郁和厌食等症状,仅引起轻度的鼻炎,中度的咽炎,剖检肺表现正常,仅见支气管淋巴结肿大,45代时无临床症状,剖检除扁桃体肿大外没有见到其它症状,60代毒已完全失去致病力,未见任何临床症状及病理变化。

关 键 词:  2型腺病毒  传染性喉气管炎病毒  传代驯化  免疫原性  安全性  噬斑克隆
文章编号:1002-1280(2001)-06-0007-03
修稿时间:2001年5月8日

Attenuation SY strain of CAV-2 strain
FAN Quan-shui,XIA Xian-zhu,QIU Wei,HUANG Geng,HE Hong-bin,YU Chun,Qiao Jun,WU Yin-lian,YIN Zhen.Attenuation SY strain of CAV-2 strain[J].Chinese Journal of Veterinary Drug,2001,35(6):7-9.
Authors:FAN Quan-shui  XIA Xian-zhu  QIU Wei  HUANG Geng  HE Hong-bin  YU Chun  Qiao Jun  WU Yin-lian  YIN Zhen
Institution:FAN Quan shui 1,XIA Xian zhu 1,QIU Wei 1,HUANG Geng 1,HE Hong bin 3,YU Chun 4,QIAO Jun 5,WU Yin lian 2,ZHOU Xiao huan 2,YIN Zhen 2
Abstract:A canine adenovirus (CAV) strain was isolated from a diarrhea dog with MDCK cell, it was demonstrated that it is a type 2 virulent strain, by systematic identification and was named SY. Since it can induce high SN antibody titer in dogs against CAV, it may be a potential vaccine strain candidate. The virulent SY strain was attenuated by serial passages in MDCK cell line. The pathogenicity of SY strain was tested by experimental infection in susceptible dogs with the virus on 15th, 13th, 45th and 60th passage lever, respectively. The result showed that the pathogenicity of SY strain decreased gradually with the increasing of passages and lost pathogenicity to dogs of the 60th passage.
Keywords:Canine laryngotracheitis virus (ICLV) / Canine adenovirus type 2 (CAV  2)  passage and attenuation  vaccine strain
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