| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5794676 | Research in Veterinary Science | 2015 | 4 Pages |
â¢We evaluated diagnostic performance of T.âgondii GRA1-, GRA7-, and TSA-ELSAs in chickens.â¢GRA7-ELISA shows the highest co-positivity and co-negativity rates.â¢GRA7 is a potential serodiagnostic marker for the detection of T.âgondii infection in chickens.
In the present study, recombinant granule antigen proteins GRA1, GRA7 and Toxoplasma soluble antigens (TSA) were evaluated as potential diagnostic markers for T.âgondii infection in chickens by an indirect enzyme-linked immunosorbent assay (ELISA), showing a seroprevalence of 16.4% by GRA1-ELISA, and 15.5% by both GRA7- and TSA-ELISA in chickens. No significant difference was observed in the inconsistent results (Pâ>â0.05), and a substantial agreement was found in the consistent results of the 3 tests (92.7-97.3%). Compared with the reference test Western blot, GRA7-ELISA showed the highest co-positivity and co-negativity rates. Receiver operating characteristic (ROC) analysis revealed a largest area under curve (AUC) of 0.99 (95% CI, 98-1.0), and a highest relative sensitivity (100%) and specificity (97.9%) for a cut-off value of 0.34 in GRA7-ELISA. These results of the present study showed that GRA7 is a potential diagnostic marker for the detection of T.âgondii infection in chickens.
