Consulta: subjectFacets:"Diagnostic test"
Registros recuperados: 2
Data/hora: 09/06/2024 10:33:56

A VP3/VP1 gene polymerase chain reaction assay for detection of chicken anemia virus in broiler samples
Provedor de dados: 45
Autores: Nogueira,E.O.; Brentano,L.; Ferreira,A.J.P.
A PCR assay was designed for amplification of the highly conserved VP3 gene and a 5' region of the VP1 gene, for the diagnosis of CAV in organ samples of broiler flocks suspected of chicken infectious anemia. A comparison of the VP3/VP1 PCR with in vivo virus isolation revealed 100% agreement of the results, with 13 positive and 3 negative samples in both assays, indicating that the VP3/VP1 PCR is a specific diagnostic method. Tissues from additional 24 broiler chicken flocks, with CAV-like lesions and clinical history were then tested only by the VP3/VP1 PCR and a reference PCR with published primers for the VP1 gene. Nineteen samples resulted positive and one negative in both PCR, while another 4 samples were positive only in the VP3/VP1 PCR. These...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Chicken anemia virus; CAV; PCR; Diagnostic test.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000800001

The application of latent class analysis for diagnostic test validation of chronic Trypanosoma cruzi infection in blood donors
Provedor de dados: 55
Autores: Langhi Junior,Dante M.; Bordin,José O.; Castelo,Adauto; Walter,Stephen D.; Moraes-Souza,Hélio; Stumpf,Robert J.
The main strategy to prevent transfusion-associated Chagas' disease is the identification of T. Cruzi-infected blood donors by serological screening tests, however there is no perfect serological gold standard. We evaluated an enzyme immunoassay (EIA), an indirect hemaglutination (IHA), and an indirect immunofluorescence (IIF) test for detecting T. Cruzi antibodies in Brazilian blood donors. The results were submitted to latent class analysis, and a radioimmunopreciptation (RIPA) test was performed on repeatedly positive samples. Among 1951 donors, 11 (0.56%) were positive by EIA, 6 (0.31%) by IHA and 16 (0.82%) by IIF. Six samples were positive with all tests, while 4 reacted with EIA and IIF. The RIPA was positive in 6 (75.0%), 7 (66.6%), and 4 (54.0%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chaga's disease; Blood donors; Diagnostic test; Latent class analysis.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702002000400005