Evaluation of an Indirect ELISA Using Recombinant Arginine Kinase for Serodiagnosis of Psoroptes ovisvar. cuniculi Infestation in Rabbits
Xiaobin Gu, Jiang Gu,Yongjun Ren, Youle Zheng, Guangyou Yang, Xuan Zhou and Yue Xie
Abstract
Psoroptes ovisvar.cuniculiis a common ectoparasite of the wild and domestic rabbits worldwide, which causes significant economic losses in commercial rabbit breeding. In China, the diagnosis of rabbits infested withP. ovisvar.cuniculicurrently relies on detection of clinical signs andPsoroptesmites in skin scrapings by microscopy examination. However, this method is not very efficient in detection of the low mite loads and/or sub-clinical infections. In the present study, we cloned and expressed an arginine kinase homolog gene fromP. ovisvar.cuniculi(Poc-AK) and used its recombinant protein rPoc-AK to develop an indirect enzyme-linked immunosorbent assay (iELISA) method for diagnosis ofP. ovisvar.cuniculiinfestation in rabbits. The results showed that the rPoc-AK protein was ~61 kDa and had no signal peptide. The rPoc-AK-based iELISA achieved a 94.4% sensitivity and a 88.2% specificity, and was able to detectP. ovisvar.cuniculiinfection as early as the 1st week post-infection, prior to the appearance of clinical signs. Further field study showed 24.94% (66.33/266) clinically normal rabbits were seropositive with the highest and lowest seropositive rates for California (35.71%) and Belgian (15.14%), respectively. These results suggested that the rPoc-AK has potential as a diagnostic antigen for earlyP. ovisvar.cuniculiinfestation in rabbits.
copyright:© 2019 Gu, Gu, Ren, Zheng, Yang, Zhou and Xie.
Front. Vet. Sci.6:411. doi: 10.3389/fvets.2019.00411
Read Full Text:https://www.frontiersin.org/articles/10.3389/fvets.2019.00411/full#h13
