
handle: 10261/113703
[ES] En este trabajo se describe la aparición de abortos entre los días 7 y 11 post infección durante una infección experimental de toxoplasmosis en ovejas gestantes. La aparición de estos abortos difiere de la presentación clásica de la toxoplasmosis ovina, donde éstos suelen ocurrir alrededor del mes post infección. De igual forma, las lesiones observadas en los abortos en la fase aguda (trombosis placentarias y focos de leucomalacia fetal), son diferentes de aquellas normalmente asociadas a la toxoplasmosis ovina, sugiriendo la implicación mecanismos patogé- nicos diferentes entres ambos procesos. En el momento de producirse el aborto, las madres eran seronegativas frente a Toxoplasma gondii y había ausencia, o escasa presencia, del parásito en muestras de placenta o fetales, lo que dificultaría el diagnostico de este proceso en casos naturales de infección.
[EN] The purpose of this study is to describe the occurrence of abortion between days 7 and 11 post infection in an experimental ovine toxoplasmosis infection. These abortions differ from classical toxoplasmosis, where abortions occur one month after infection. Furthermore, histological changes found in acute abortions, placental thrombosis and foetal leukomalacia foci, are different from those normally observed in ovine toxoplasmosis, suggesting differences in the pathogenetic mechanisms of the two presentations. At the time of abortion, the mothers were seronegative for T. gondii infection and the parasite was absent, or in low quantities, in placental and foetal samples, which would compromise the diagnosis of this condition in natural cases of infection.
6 páginas, 1 tabla.--Trabajo presentado a las XXXIX Congreso Nacional y XV Internacional de la Sociedad Española de Ovinotecnia y Caprinotecnia (SEOC), (Ourense, 17-19 de septiembre de 2014).
Proyectos AGL2011-30205, del Ministerio de Ciencia e Innovación, y LE253U13, de la Junta de Castilla y León.
Peer Reviewed
Trombosis, Aborto, Placenta, Foetal anoxia, Abortion, Toxoplasma gondii, Anoxia fetal, Thrombosis
Trombosis, Aborto, Placenta, Foetal anoxia, Abortion, Toxoplasma gondii, Anoxia fetal, Thrombosis
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