|
|||||
|
|
Schistosoma bovis whole egg antigen did not protect Zebu calves against experimental schistosomosis |
|
| Authors: | Imadeldin E Aradaib Osama H Omer Babiker B Abbas Hamid O Bushara Khitma H Elmalik Amir M Saad Bennie I Osburn Martin G Taylor |
| Institution: | a Department of Veterinary Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA b Department of Preventive Medicine, Faculty of Veterinary Science, University of Khartoum, Khartoum, Sudan c Department of Medicine, Pharmacology and Toxicology, Faculty of Veterinary Science, University of Khartoum, Khartoum, Sudan d Department of Pathology, Faculty of Veterinary Science, University of Khartoum, Khartoum, Sudan e Department of Medical Helminthology, London School of Hygiene and Tropical Medicine, University of London, London, UK |
| Abstract: | Six calves were immunized with whole egg antigen of Schistosoma bovis emulsified in Freund's adjuvant. The immune response was monitored by agar-gel immunodiffusion (AGID) and enzyme-linked immunosorbent assay (ELISA). Using AGID and ELISA, antibodies to whole egg antigen were detected in sera from all immunized calves, but not in sera from control calves. The immunized calves and six control calves were challenged 6 months after the beginning of the immunization with 20 000 cercariae of Schistosoma bovis administered percutaneously to the shaved tail. There was no significant difference between the immunized and the control calves as judged by fecal and tissue egg counts, worm recovery and hematological parameters. There was a lack of association between antibody production and protection. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |