Abstract:
:Intrauterine infection has been associated with fetal brain injury and preterm birth. We have recently shown that repeated exposure to bacterial endotoxin leads to hypoxia and brain injury in the preterm ovine fetus and we considered it possible that endotoxin could also damage the placenta. Our aim therefore was to assess placental structure following repeated exposure to endotoxin. Endotoxin was administered on 3-5 occasions (1 microg/kg, i.v.) over 5 days from 95-99 days of gestation (term approximately 147 days) to 6 fetal sheep and placental structure assessed at 105 days. In LPS-exposed animals there was a 17 per cent reduction (P<0.05) in placental weight and the average cross-sectional area of placentomes was reduced (P<0.05) by 20 per cent. In addition, all LPS-exposed placentae showed significant injury as evidenced by calcium deposits associated with areas of infarcted tissue. We conclude that repeated endotoxin exposure results in damage to the placenta which could lead to persistent alterations in placental exchange function.
journal_name
Placentajournal_title
Placentaauthors
Duncan JR,Cock ML,Rees S,Harding Rdoi
10.1016/s0143-4004(03)00104-8keywords:
subject
Has Abstractpub_date
2003-08-01 00:00:00pages
786-9issue
7eissn
0143-4004issn
1532-3102pii
S0143400403001048journal_volume
24pub_type
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