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High interferon alpha levels in placenta, maternal, and cord blood suggest a protective effect against intrauterine herpes simplex virus infection

High interferon alpha levels in placenta, maternal, and cord blood suggest a protective effect... Interferons (IFN) are produced by the placenta during pregnancy, and they can be detected in the maternal and fetal blood. Although the anti‐viral potential of IFNs is well established, it remains unclear whether the IFNs associated with pregnancy can prevent transplacental spread of viral infection. The present study was undertaken in order to determine the possible protective effect of placentally produced IFN‐α on fetal acquisition of herpes simplex virus (HSV). Nine mothers with a known history of genital HSV infection were studied. In five cases IFN‐α was detected in the placenta, maternal, and fetal blood, whereas in three cases IFN‐α could not be detected. In the remaining case, IFN‐α was found only in the maternal blood. As corroborated by the serological evidence of early HSV infection in the cord blood, the single case of vertical HSV transmission was observed in the group of IFN nonproducers. Furthermore, virus transmission did not occur in cases where IFN‐α was present in the placenta and simultaneously in the maternal and fetal circulations. Thus, the present data indicate that high levels of IFN during pregnancy may protect the fetus from acquiring a possibly fatal intrauterine HSV infection. J. Med. Virol. 51:210–213, 1997. © 1997 Wiley‐Liss, Inc. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Medical Virology Wiley

High interferon alpha levels in placenta, maternal, and cord blood suggest a protective effect against intrauterine herpes simplex virus infection

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References (30)

Publisher
Wiley
Copyright
Copyright © 1997 Wiley‐Liss, Inc.
ISSN
0146-6615
eISSN
1096-9071
DOI
10.1002/(SICI)1096-9071(199703)51:3<210::AID-JMV11>3.0.CO;2-O
Publisher site
See Article on Publisher Site

Abstract

Interferons (IFN) are produced by the placenta during pregnancy, and they can be detected in the maternal and fetal blood. Although the anti‐viral potential of IFNs is well established, it remains unclear whether the IFNs associated with pregnancy can prevent transplacental spread of viral infection. The present study was undertaken in order to determine the possible protective effect of placentally produced IFN‐α on fetal acquisition of herpes simplex virus (HSV). Nine mothers with a known history of genital HSV infection were studied. In five cases IFN‐α was detected in the placenta, maternal, and fetal blood, whereas in three cases IFN‐α could not be detected. In the remaining case, IFN‐α was found only in the maternal blood. As corroborated by the serological evidence of early HSV infection in the cord blood, the single case of vertical HSV transmission was observed in the group of IFN nonproducers. Furthermore, virus transmission did not occur in cases where IFN‐α was present in the placenta and simultaneously in the maternal and fetal circulations. Thus, the present data indicate that high levels of IFN during pregnancy may protect the fetus from acquiring a possibly fatal intrauterine HSV infection. J. Med. Virol. 51:210–213, 1997. © 1997 Wiley‐Liss, Inc.

Journal

Journal of Medical VirologyWiley

Published: Mar 1, 1997

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