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KMID : 0380420110350030169
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Journal of Prventive Veterinary Medicine
2011 Volume.35 No. 3 p.169 ~ p.176
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Evaluation on detection of equine herpesvirus type 3 and its antibody for development on the diagnosis of equine coital exanthema
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Yang Jae-Hyuk
Lim Yoon-Kyu
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Abstract
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Equine coital exanthema (ECE) caused by equine herpes virus type 3 (EHV-3) is a sexually transmitted disease which is resulted in the failure of mating, declination of horse productivity and finally economic loss in horse industry. In this thesis, diagnosis studies on ECE have been performed in order to develop a serological diagnosis method of enzyme-linked immunosorbent assay (ELISA). ELISA has been developed to detect antibodies against EHV-3. Whole EHV-3 viruses were purified from cell culture and coated on ELISA plate, which successfully captured by anti-EHV-3 antibody in serum samples. The positive cut-off value of developed ELISA was 0.334 at OD405 using 15 negative control horse sera. The positive rate of 20 sera from ECE positive horses by PCR was 65% and the positive rate of 12 sera from ECE negative horses by PCR was 25%. The positive rate of 72 sera from horses showing clinical signs was 59.7% and the positive rate of 72 sera from horses showing no clinical signs was 13.9%. The correlation of serum positivity between broodmares and their sucklings was analysed using 12 pairs of cases (y=0.5418x?0.0158, R2= 0.4931). The data suggested that specific antibody against EHV-3 from broodmares might be transferred to their sucklings by nursing. When compared with the results of PCR, the sensitivity and specificity of ELISA were 65%, 81.8% respectively.
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KEYWORD
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Antibody, Equine Coital Exanthema, Equine Herpesvirus Type 3, ELISA
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