Role of formalin fixed paraffin embedded liver tissues in the diagnosis of viral hepatitis E in patients with undiagnosed acute liver failure

被引：1

作者：

Ratho R.K. ^{[1
]}

Thakur V. ^{[1
]}

Majumdar M. ^{[1
]}

Singh M.P. ^{[1
]}

Das A. ^{[2
]}

Duseja A. ^{[3
]}

Khurana J. ^{[1
]}

机构：

[1] Department of Virology, Research Block A, Post Graduate Institute of Medical Education and Research, PGIMER, Chandigarh

[2] Department of Histopathology, Post Graduate Institute of Medical Education and Research, PGIMER, Chandigarh

[3] Department of Hepatology, Post Graduate Institute of Medical Education and Research, PGIMER, Chandigarh

来源：

VirusDisease | 2019年 / 30卷 / 2期

关键词：

Acute liver failure; Formalin-fixed paraffin-embedded; Genotype-1; Hepatitis E virus; Immuno-histochemistry;

D O I：

10.1007/s13337-018-0503-z

中图分类号：

学科分类号：

摘要：

Viral hepatitis E is gaining importance as an emerging worldwide disease. Though viral hepatitis E (HEV) has been attributed as an etiology of acute liver failure (ALF), however its actual incidence and the immunopathogenesis are being under explored. The present study is aimed at detecting HEV in post mortem liver tissues of patients with undiagnosed ALF. Twenty six liver tissues of ALF patients died of unknown etiology are subjected to nested reverse transcriptase PCR with HEV ORF1 gene targeted primers and HEV RNA is detected in 30.4% (7/23) of ALF cases. Out of seven HEV RNA positive cases, three (42.8%) had HEV antigen positivity by immunohistochemistry on liver tissues using HEV ORF2 antibody. Histopathological examination by H&E staining shows multiacinar confluent hepatic necrosis, bile ductular proliferation, bridging hepatic and periportal necrosis in 4, 4, 2 and 1 cases respectively. The isolates were sequenced using RdRp gene specific primers and found to HEV genotype-1. Quantitative TaqMan real time PCR estimated the viral load ranged between 7.77 × 103 and 1.44 × 107 viral copies/µl. HEV has been associated with 30.4% (7/23) of undiagnosed ALF cases. Immuno-histochemistry along with molecular testing in FFPE biopsies might be useful for the detection of HEV in undiagnosed cases. © 2019, Indian Virological Society.

引用

页码：302 / 306

页数：4

共 16 条

[1] Aggarwal R., Krawczynski K., Hepatitis E: an overview and recent advances in clinical and laboratory research, J Gastroenterol Hepatol, 15, pp. 9-20, (2000)
[2] Aggarwal R., Naik S., Epidemiology of hepatitis E: current status, J Gastroenterol Hepatol, 24, pp. 1484-1493, (2009)
[3] Bastien P., Procop G.W., Reischl U., Quantitative real-time PCR is not more sensitive than conventional PCR, J Clin Microbiol, 46, pp. 1897-1900, (2008)
[4] Drebber U., Odenthal M., Aberle S.W., Winkel N., Wedemeyer I., Hemberger J., Hepatitis E in liver biopsies from patients with acute hepatitis of clinically unexplained origin, Front Physiol, (2013)
[5] Echevarria J.M., Fogeda M., Avellon A., Diagnosis of acute hepatitis E by antibody and molecular testing: a study on 277 suspected cases, J Clin Virol, 50, pp. 69-71, (2011)
[6] Gupta P., Jagya N., Pabhu S.B., Durgapal H., Acharya S.K., Panda S.K., Immunohistochemistry for the diagnosis of hepatitis E virus infection, J Viral Hepat, 19, pp. e177-e183, (2012)
[7] Jameel S., Durgapal H., Habibullah C.M., Khuroo M.S., Panda S.K., Enteric non-A, non-B hepatitis: epidemics, animal transmission and hepatitis E virus detection by the polymerase chain reaction, J Med Virol., 37, pp. 263-270, (1992)
[8] Khuroo M.S., Kamili S., Aetiology and prognostic factors in acute liver failure in India, J Viral Hepat, 10, pp. 224-231, (2003)
[9] Khuroo M.S., Khuroo M.S., Hepatitis E: an emerging global disease from discovery towards control and cure, J Viral Hepat, 23, pp. 68-79, (2016)
[10] Khuroo M.S., Teli M.R.S., Kidmore S., Sofi M.A., Khuroo M.I., Incidence and severity of viral hepatitis in pregnancy, Am J Med, 70, pp. 252-265, (1981)

← 1 2 →