摘要
目的：了解我国人群中是否存在ＴＴ病毒（ＴＴＶ）感染，分析国内ＴＴ病毒株基因结构特点。方法：用ＰＣＲ方法检测血清标本中ＴＴＶＤＮＡ，对ＴＴＶＤＮＡ阳性的标本进行序列测定。结果：１０例临床诊断为非甲至非戊型肝炎病人血清标本中，用ＰＣＲ方法检测出５例为ＴＴＶＤＮＡ阳性。将其中的一株命名为ＴＴＶＣＨ１（ＴＴＶ中国株１）并进行序列测定，该序列与日本ＴＴＶ部分基因（ＣＬＯＮ２２）相对应位置的核苷酸同源性为９８％。用ＢＬＡＳＴ程序检索了ＧｅｎＢａｎｋ＋ＥＭＢＬ＋ＰＤＢ序列库的３３２９４９个序列数据，没有发现与之有明显同源性的序列；与已知的肝炎病毒（Ａ至Ｇ）也没有明显的相关性，而只同日本报道的部分基因有很高的同源性。结论：该研究建立了检测ＴＴＶ的ＰＣＲ方法并测定了ＴＴＶ中国株的部分基因序列，首次证实在我国人群中存在ＴＴＶ的感染。
Objective: To investigate the presence of TTV infection among patients with Non A E hepatitis in China and establish the PCR method for detection of TTV DNA. Methods: Serum samples collected from Beijing hospital of infectious diseases were detected for TTV DNA using PCR method and the PCR products were sequenced. Results and Conclusion: TTV DNA was detected in 5 of the 10 patients with Non A E hepatitis.The partial gene was cloned and sequenced from the serum of one patient with non A E hepatitis. The partial sequence of TTV in China(named as TTVCH1) showed 98% nucleotide identity over the corresponding region of TTV isolate in Japan.
出处
《军事医学科学院院刊》
CSCD
北大核心
1998年第2期81-83,共3页
Bulletin of the Academy of Military Medical Sciences
