J C Lanning

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Animal studies of endotoxemia during pregnancy have suggested that the placenta is the primary site of action. This study was designed to evaluate the effects of endotoxin at previously established resorptive and teratogenic dose levels during the development of the placenta in the hamster. At the higher dose levels, total necrosis of the placenta was(More)
Gram-negative urinary tract infections in pregnant women have been implicated as causes of maternal endotoxemia and a subsequent higher incidence of malformations in their offspring. A study was performed to evaluate the effects of endotoxin on the development of the golden hamster. Endotoxin was shown to be extremely embryolethal at higher doses and to(More)
The influence of PGF2 alpha on pregnancy and fetal outcome was investigated in the hamster. Following subcutaneous treatment with 50, 100, 200, 400, and 800 micrograms PGF2 alpha prenatal loss was significantly increased only at the highest dose level. The offspring of the treated animals were all alive and normal. Fetal weight was not affected. However,(More)
Current methodology in embryo evaluation involves qualitative assessment of razor blade and paraffin serial sections. Presently, no one has applied existing computerized morphometric techniques to examine embryos. A technique has been developed that enables investigators to section embryos at 150 mu, thereby greatly reducing the number of sections and(More)
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