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Evaluation of crude hydatid cyst fluid antigens for the serological diagnosis of hydatidosis in cattle. 2011

Lemu Golassa, and Tamrat Abebe, and Asrat Hailu
Department of Medical Laboratory Sciences and Pathology, College of Public Health and Medical Sciences, Jimma University, PO Box 378, Jimma, Ethiopia. lgolassa@gmail.com

Echinococcosis is a zoonotic infection caused by adult or larval (metacestode) stages of cestodes belonging to the genus Echinococcus. The purpose of this study was to evaluate the antigenic ability of hydatid cyst fluid antigen for the diagnosis of hydatidosis in cattle using enzyme-linked immunosorbent assay (ELISA) and indirect haemagglutination test (IHA). The source of the antigens for the serological tests was fertile crude cyst fluids collected from naturally infected sheep at the Addis Ababa abattoir. A total of 502 sera were collected from 329 uninfected cattle and 173 hydatid-infected cattle which were confirmed by post-mortem examination. Most cysts were sterile and multiple organ infection predominated. Of 173 infected cattle, 166 (96.0%; confidence interval (CI) 91.8-98.4) were positive using ELISA while 7 (4.0%) were negative. Of 329 sera from uninfected cattle, 274 (83.3%; CI 78.8-87.2) were found to be negative and the remaining 55 (16.7%) were positive by ELISA. Of 173 infected cattle, 151 (87.3%; CI 81.4-91.9) were positive and 22 (12.7%) were negative by IHA. Of 329 negative sera tested using IHA, 266 (80.9%; CI 76.2-85.0) were negative and the remaining 63 (19.1%) were positive. The false positive and negative values of ELISA were 4.0 and 16.7%, respectively, and the corresponding values of IHA were 12.7 and 19.1%. The sensitivity and diagnostic efficiency of IHA were 87.2 and 83.6%, respectively. Crude hydatid cyst fluid antigen seems to have reasonable antigenic properties and hence could be employed for epidemiological surveillance of cattle hydatidosis.

UI MeSH Term Description Entries
D002417 Cattle Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor. Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D002418 Cattle Diseases Diseases of domestic cattle of the genus Bos. It includes diseases of cows, yaks, and zebus. Bovine Diseases,Bovine Disease,Cattle Disease,Disease, Bovine,Disease, Cattle,Diseases, Bovine,Diseases, Cattle
D003933 Diagnosis The determination of the nature of a disease or condition, or the distinguishing of one disease or condition from another. Assessment may be made through physical examination, laboratory tests, or the likes. Computerized programs may be used to enhance the decision-making process. Diagnose,Diagnoses and Examination,Antemortem Diagnosis,Diagnoses and Examinations,Examinations and Diagnoses,Postmortem Diagnosis,Antemortem Diagnoses,Diagnoses,Diagnoses, Antemortem,Diagnoses, Postmortem,Diagnosis, Antemortem,Diagnosis, Postmortem,Examination and Diagnoses,Postmortem Diagnoses
D004443 Echinococcosis An infection caused by the infestation of the larval form of tapeworms of the genus Echinococcus. The liver, lungs, and kidney are the most common areas of infestation. Cystic Echinococcosis,Cysts, Hydatid,Hydatid Cyst,Hydatidosis,Echinococcus Granulosus Infection,Echinococcus Infection,Hydatid Disease,Cyst, Hydatid,Cystic Echinococcoses,Echinococcoses,Echinococcoses, Cystic,Echinococcosis, Cystic,Echinococcus Granulosus Infections,Echinococcus Infections,Granulosus Infection, Echinococcus,Granulosus Infections, Echinococcus,Hydatid Cysts,Hydatid Diseases,Hydatidoses,Infection, Echinococcus,Infection, Echinococcus Granulosus,Infections, Echinococcus Granulosus
D004797 Enzyme-Linked Immunosorbent Assay An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed. ELISA,Assay, Enzyme-Linked Immunosorbent,Assays, Enzyme-Linked Immunosorbent,Enzyme Linked Immunosorbent Assay,Enzyme-Linked Immunosorbent Assays,Immunosorbent Assay, Enzyme-Linked,Immunosorbent Assays, Enzyme-Linked
D006386 Hemagglutination Tests Sensitive tests to measure certain antigens, antibodies, or viruses, using their ability to agglutinate certain erythrocytes. (From Stedman, 26th ed) Hemagglutination Test,Test, Hemagglutination,Tests, Hemagglutination
D000003 Abattoirs Places where animals are slaughtered and dressed for market. Slaughterhouses,Slaughter House,Slaughter Houses,Abattoir,House, Slaughter,Houses, Slaughter,Slaughterhouse
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000909 Antibodies, Helminth Immunoglobulins produced in a response to HELMINTH ANTIGENS. Helminth Antibodies
D000947 Antigens, Helminth Any part or derivative of a helminth that elicits an immune reaction. The most commonly seen helminth antigens are those of the schistosomes. Helminth Antigens

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