在从墨西哥儿童中分离出的常见轮状病毒株中意外检测到动物VP7基因。
Unexpected detection of animal VP7 genes among common rotavirus strains isolated from children in Mexico.
作者信息
Laird A R, Ibarra V, Ruiz-Palacios G, Guerrero M L, Glass R I, Gentsch J R
机构信息
Viral Gastroenteritis Section, Division of Viral and Rickettsial Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333, USA.
出版信息
J Clin Microbiol. 2003 Sep;41(9):4400-3. doi: 10.1128/JCM.41.9.4400-4403.2003.
Abstract
In the course of characterizing 103 rotaviruses from children in Mexico, we found that the majority of strains were globally common types (55.4% of total), while uncommon types represented 5.7%, mixed infections with common types represented 14.8%, and partially or fully nontypeable isolates represented about 24%. Serotype G9 was detected for the first time in Mexico. We sequenced a subset of strains that were G nontypeable by reverse transcriptase PCR and found surprisingly that two strains having common human rotavirus P genotypes (8 and 6) had serotype G3 and G4 VP7 gene sequences that shared closer homology with canine and porcine strains, respectively, than with human strains, suggesting that these isolates represented reassortants between human and animal rotaviruses.
摘要
在对来自墨西哥儿童的103株轮状病毒进行特征分析的过程中，我们发现大多数毒株是全球常见类型（占总数的55.4%），而不常见类型占5.7%，与常见类型的混合感染占14.8%，部分或完全无法分型的分离株约占24%。血清型G9首次在墨西哥被检测到。我们对一部分通过逆转录酶PCR无法分型G的毒株进行了测序，令人惊讶地发现，两株具有常见人类轮状病毒P基因型（8型和6型）的毒株，其血清型G3和G4的VP7基因序列与犬类和猪类毒株的同源性分别比与人类毒株的同源性更高，这表明这些分离株代表了人类和动物轮状病毒之间的重配体。
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