Transplacental transmission in cattle: is Toxoplasma gondii less potent than Neospora caninum?
We compared the transplacental-transmission ability of Toxoplasma gondii and Neospora caninum in cattle. One uninfected pregnant heifer served as control, while three were inoculated with N. caninum K9WA strain and four with T. gondii RH strain at their midgestational period. Both infected groups sh...
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Published in | Parasitology research (1987) Vol. 108; no. 5; pp. 1235 - 1241 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer-Verlag
01.05.2011
Springer |
Subjects | |
Online Access | Get full text |
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Summary: | We compared the transplacental-transmission ability of
Toxoplasma gondii
and
Neospora caninum
in cattle. One uninfected pregnant heifer served as control, while three were inoculated with
N. caninum
K9WA strain and four with
T. gondii
RH strain at their midgestational period. Both infected groups showed clinical signs and antibodies either to
N. caninum
or
T. gondii
, while the control animal was normal. Two (50%)
Toxoplasma
dams aborted on days 6 and 11 postinoculation.
T. gondii
tachyzoites were found in various organs of those dams that had abortions but not in their fetuses. Two
Neospora
dams did not abort but gave birth to subclinically infected calves. The remaining two
Toxoplasma
dams and one from
Neospora
group became recumbent. Those two dams and their fetuses showed disseminated
Toxoplasma
DNA, but no
Neospora
DNA was found. Our findings suggest that maternal toxoplasmosis could be a cause of abortion and congenital toxoplasmosis in cattle, especially when they are infected by virulent strains. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1 |
ISSN: | 0932-0113 1432-1955 |
DOI: | 10.1007/s00436-010-2172-8 |