P686 EXTRAHEPATIC REPLICATION OF HEPATITIS E VIRUS IN HUMAN PLACENTA: ITS CLINICAL IMPLICATIONS

2014 ◽  
Vol 60 (1) ◽  
pp. S297-S298
Author(s):  
P. Deka ◽  
B.C. Das ◽  
R.K. Hazam ◽  
A. Kumar ◽  
P. Kar
2014 ◽  
Vol 95 (6) ◽  
pp. 1266-1271 ◽  
Author(s):  
Purabi Deka Bose ◽  
Bhudev Chandra Das ◽  
Rajib Kishore Hazam ◽  
Ashok Kumar ◽  
Subhash Medhi ◽  
...  

The incidence and severity of hepatitis E virus (HEV) infection in pregnant women is high in developing countries. Transplacental transmission of HEV in the third trimester of pregnancy has been found to be associated with high fetal mortality. Based on this evidence and in the absence of reports on HEV replication in extrahepatic sites, this study was carried out to investigate if HEV replication occurs in the placenta of infected mothers. The study included 68 acute viral hepatitis (AVH) and 22 acute liver failure (ALF) pregnant patients. Viral RNA was extracted from blood and placenta. HEV replication in placenta was confirmed by a replicative negative-strand-specific reverse transcriptase PCR. Viral load was estimated by real-time PCR. Immunohistochemical studies were also carried out for in situ detection of HEV in placental tissue sections. Replicative HEV RNA was detectable only in the placenta in ALF and AVH cases and not in blood samples. Positive staining of placental tissue sections with HEV antibody against the viral structural protein ORF3 was observed. HEV replication in placenta also correlated with fetal and maternal mortality in ALF patients. It is demonstrated for the first time that HEV replication occurs in human placenta and that placenta may be a site of extrahepatic replication of HEV in humans.


Pathogens ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 295 ◽  
Author(s):  
Mohamed A. El-Mokhtar ◽  
Essam R. Othman ◽  
Maha Y. Khashbah ◽  
Ali Ismael ◽  
Mohamed AA Ghaliony ◽  
...  

Hepatitis E virus (HEV) is the most common cause of acute viral hepatitis worldwide. The tropism of HEV is not restricted to the liver, and the virus replicates in other organs. Not all the extrahepatic targets for HEV are identified. Herein, we found that non-decidualized primary human endometrial stromal cells (PHESCs), which are precursors for the decidua and placenta, are susceptible to HEV infection. PHESCs, isolated from healthy non-pregnant women (n = 5), were challenged with stool-derived HEV-1 and HEV-3. HEV RNA was measured by qPCR, and HEV capsid protein was assessed by flow cytometry, immunofluorescence (IF), and ELISA. HEV infection was successfully established in PHESCs. Intracellular and extracellular HEV RNA loads were increased over time, indicating efficient replication in vitro. In addition, HEV capsid protein was detected intracellularly in the HEV-infected PHESCs and accumulated extracellularly over time, confirming the viral assembly and release from the infected cells. HEV-1 replicated more efficiently in PHESCs than HEV-3 and induced more inflammatory responses. Ribavirin (RBV) treatment abolished the replication of HEV in PHESCs. In conclusion, PHESCs are permissive to HEV infection and these cells could be an endogenous source of HEV infection during pregnancy and mediate HEV vertical transmission.


2013 ◽  
Vol 32 (1) ◽  
pp. 78-85 ◽  
Author(s):  
Ludi Koning ◽  
Suzan D. Pas ◽  
Robert A. de Man ◽  
Aggie H.M.M. Balk ◽  
Robert J. de Knegt ◽  
...  

2011 ◽  
Vol 49 (01) ◽  
Author(s):  
C Dorloff ◽  
J Hemberger ◽  
M Odenthal ◽  
H Holzmann ◽  
S Aberle ◽  
...  

2013 ◽  
Vol 51 (01) ◽  
Author(s):  
S Schlosser ◽  
J Pflaum ◽  
K Weigand ◽  
JJ Wenzel ◽  
W Jilg ◽  
...  

2018 ◽  
Vol 56 (01) ◽  
pp. E2-E89
Author(s):  
D Westhölter ◽  
J Hartl ◽  
J Hiller ◽  
U Denzer ◽  
S Peine ◽  
...  

1995 ◽  
Vol 74 (05) ◽  
pp. 1385-1386 ◽  
Author(s):  
Pirkko Pohjanpelto ◽  
Freja Ebeling ◽  
Vesa Rasi ◽  
Hartmut Hampl

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