戊型肝炎患者病毒血症的研究

A Study on Viremia in Patients with Hepatitis E

为了更全面地了解戊型肝炎病毒（ＨＥＶ）的感染过程，从ＨＥＶ开放读框１（ＯＲＦ１）区设计两对寡核苷酸引物，建立逆转录－套式聚合酶链反应（ＲＴ－ｎＰＣＲ），对６２例戊型肝炎患者发病后５３１份血清进行ＨＥＶＲＮＡ检测。结果显示，阳性患者占７１％。全程随访３２例患者２８８份系列血清，发现阳性２４例（７５％），其阳性率随病程延长而下降，平均持续时间为发病后２０．６天。观察４４例血清ＨＥＶＲＮＡ阳性患者，有３６例（８１．８％）在血清转氨酶和总胆红素水平开始回落时仍呈阳性；３９例（８８．６％）同时检测到抗－ＨＥＶ。ＨＥＶ血症的阳性率及阳性持续时间与血清转氨酶。

Hepatitis E virus RNA (HEV RNA) was detected in 531 serial serum specimens collected from 62 hospitalized patients with hepatitis E by reverse transcriptionnested polymerase chain reaction (RTnPCR) setting two pairs of primer from open reading frame 1 (ORF1) to understand the process of HEV infection more thoroughly. Results showed that 71 percent of the patients were positive for HEV RNA. Thirtytwo of them with 288 serial serum specimens were followed up for the whole process, and 24 cases (75%) were positive for HEV RNA, positive rates declined with the course of the disease and serum HEV RNA lasted for 20.6 days in average. Serum HEV RNA was kept positive in 36 of the 44 patients (81.8%) at the time their serum alanine aminotransferase (ALT) and serum total bilirubin began to lower, and antiHEV was detected in 39 of them (88.6%). Proportion of HEV viremia and length of it had no direct relationship with serum ALT and levels of total serum bilirubin and antiHEV.