Congenital Toxoplasmosis in Chronically Infected and Subsequently Challenged Ewes.

This experiment studied congenital transmission in sheep experimentally infected with oocysts of Toxoplasma gondii and reinfected at one of three stages of pregnancy. Twenty ewes were experimentally infected with T. gondii strain ME49 (day 0). After the T. gondii infection became chronic (IFAT≤512), the ewes were allocated with rams for coverage. After the diagnosis of pregnancy, these ewes were allocated into four experimental groups (n = 5): I-reinfected with T. gondii on the 40th day of gestation (DG); II-reinfected on DG 80; III-reinfected on DG 120; and IV-saline solution on DG 120 (not reinfected). Five ewes (IFAT<64) were kept as negative controls (uninfected, group V), therefore in groups I-III were infected prior to pregnancy and re-infected during pregnancy, group IV was only infected prior to pregnancy, and group V was not infected. Parasitism by T. gondii was investigated (histopathology, immunohistochemistry, mouse bioassay and PCR) in mothers and lambs tissue. All ewes produced lambs serologically positive for T. gondii. The results of the mouse bioassay, immunohistochemistry and PCR assays revealed the presence of T. gondii in all 20 sheep and their lambs. The congenital transmission of T. gondii was associated with fetal loss and abnormalities in persistently infected sheep and in ewes infected and subsequently reinfected by this protozoan. Therefore, congenital T. gondii infection was common when ewes were chronically infected prior to pregnancy, with or without reinfection during at various stages of gestation.

Ruptura traumática de traqueia cervical em cão relato de caso / Traumatic cervical trachea rupture in a dog case report

Rupturas traqueais são afecções incomuns na clínica de pequenos animais, no entanto, representam potencial risco de morte aos animais afetados. Este relato objetiva descrever um caso de ruptura traumáticade traqueia cervical, secundária a mordedura em um cão Teckel, macho, com sete anos de idade. Ascomplicações decorrentes da ruptura traqueal foram enfisema subcutâneo generalizado e taquipneia.Como tratamento, realizou-se cirurgia exploratória da região cervical e, depois de identificado o orifício,optou-se pela sutura traqueal com náilon em padrão simples interrompidos. Conclui-se neste caso que o tratamento cirúrgico para ruptura traqueal com traqueorrafia obteve excelentes resultados, sem qualquercomplicação pós-cirúrgica.(AU)

Tracheal ruptures are uncommon in clinical disorders of small animals, however represent potentiallylife threatening to animals affected. The objective is to describe a case of traumatic rupture ofthe cervical trachea secondary to dog bite in a Dachshund male with seven years old. The complicationsof tracheal rupture were general subcutaneous emphysema and tachypnea. The treatmentwas an exploratory surgery of the cervical region and the surgical procedure used was directsuturing in all of tracheal injury in simple interrupted pattern. We conclude in this case that thesurgical treatment and the simple suture of the trachea obtained excellent results without any complications.(AU)

Ruptura traumática de traqueia cervical em cão – relato de caso / Traumatic cervical trachea rupture in a dog – case report

Rupturas traqueais são afecções incomuns na clínica de pequenos animais, no entanto, representam potencial risco de morte aos animais afetados. Este relato objetiva descrever um caso de ruptura traumáticade traqueia cervical, secundária a mordedura em um cão Teckel, macho, com sete anos de idade. Ascomplicações decorrentes da ruptura traqueal foram enfisema subcutâneo generalizado e taquipneia.Como tratamento, realizou-se cirurgia exploratória da região cervical e, depois de identificado o orifício,optou-se pela sutura traqueal com náilon em padrão simples interrompidos. Conclui-se neste caso que o tratamento cirúrgico para ruptura traqueal com traqueorrafia obteve excelentes resultados, sem qualquercomplicação pós-cirúrgica.

Tracheal ruptures are uncommon in clinical disorders of small animals, however represent potentiallylife threatening to animals affected. The objective is to describe a case of traumatic rupture ofthe cervical trachea secondary to dog bite in a Dachshund male with seven years old. The complicationsof tracheal rupture were general subcutaneous emphysema and tachypnea. The treatmentwas an exploratory surgery of the cervical region and the surgical procedure used was directsuturing in all of tracheal injury in simple interrupted pattern. We conclude in this case that thesurgical treatment and the simple suture of the trachea obtained excellent results without any complications.