Humoral response and evolution of Echinococcus infection in experimentally infected sheep.

نویسندگان

  • Roberto Lamberti
  • Laura Cavagion
  • Antonio Gatti
  • Claudio Calvo
  • Lilia Gino
  • Veronica Véspoli Puches
  • Angela Rosa Alvarez
  • Emiliano Alvarez
  • Mariela García Cachau
  • Mariela Morete
  • Edmundo Larrieu
چکیده

There is little information on the humoral response of sheep experimentally infected with Echinococcus granulosus. Thus, the objective of this study was to evaluate this response and measure its evolution. Doses of 10, 100, 1000 and 10000 E. granulosus eggs were prepared and inoculated via intraruminal puncture. Blood samples were obtained before inoculation and every 48 h after inoculation, until they became seropositive. Thereafter, they were taken monthly for the first year and then every three months until 1700 days of observation had been completed. An ELISA test, with total hydatid fluid antigen, was used for immunodiagnosis. The average optical density of the 12 inoculated sheep was found to be above the mean cutoff value 10 days after inoculation, went on increasing until 180 days after inoculation and remained above the cutoff level until the end of the observation period. This confirms that the antibody response of sheep to E. granulosus infection occurs before production of hydatid fluid and that activation, mobilization and establishment of oncospheres in the tissues generates a persistent response from the host's immune system.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evaluation of Echinococcus granulosus coproantigens by Dot-blotting in dogs

Definitive hosts of the Echinococcus granulosus (E. granulosus ) parasite are carnivores such as dogs,wolves and foxes. Detection of this parasite through faecal examination is not possible. In this study, dotblotting test for E. granulosus -specific coproantigens has been evaluated in dog. Three 2–3-month-old puppies were treated with piperazine and then faecal samples were collected as pre-in...

متن کامل

Evaluation of antioxidant status and oxidative stress in sheep experimentally infected with Anaplasma ovis

Anaplasma ovis infections can cause severe anemia in the acute phase of the disease. In order to investigate the alterations of erythrocyte protective antioxidant mechanisms associated with anemia in sheep experimentally infected with A. ovis, 100 ml heparinized blood was collected from splenectomised sheep that showed 6% A. ovis parasitemia. Inoculums of 20 ml blood were administered intraveno...

متن کامل

Detection of Echinococcus granulosus infection in dogs

Cystic Echinococcosis is an important zoonosis in the sheep rising areas of Iran. To develop a simple and reliable diagnostic method for Echinococcus infection in definitive hosts, E. granulosus polyoclonal antibodies (PolyAbs) were prepared from adult worm in rabbit. A selected PoAb was used for coproantigen detection in faecal samples obtained from animals naturally infected with Echinococcus...

متن کامل

Evaluation of Humoral Immune Response of Cats to the Experimental Infection with the different Clonal Types of Toxoplasma gondii by Measurement of IgG Antibodies

Toxoplasma gondii is one of the most prevalent parasitic infections in world. Rh, NED and Me49 are of the most prevalent clonal types of the parasite isolated till now. Differences in pathogenicity and virulence of different types have been investigated in different studies. No controlled study was performed to compare the ability of different types to initiate humoral immune response. We inves...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria

دوره 23 2  شماره 

صفحات  -

تاریخ انتشار 2014