A simple and efficient purification method of native immunoreactive antigen for diagnosis of camel hydatidosis

Vet World Vol.13 January-2020 Article-21

Research Article

Veterinary World, 13(1): 141-146

https://doi.org/10.14202/vetworld.2020.141-146

Nagwa I. Toaleb¹, Mohamed S. Helmy², Eman E. El Shanawany¹, and Eman H. Abdel-Rahman¹

1. Department of Parasitology and Animal Diseases, National Research Centre, El Buhouth St., Dokki, Cairo, Egypt.
2. Department of Molecular Biology, National Research Centre, El Buhouth St., Dokki, Cairo, Egypt.

Background and Aim: The present study was conducted to purify the antigen from hydatid cyst fluid (HCF) with high diagnostic efficacy of camel hydatidosis using indirect enzyme-linked immunosorbent assay (ELISA).

Materials and Methods: The HCF antigen was purified using Sephacryl S-300 column chromatography. Characterization of fractions was performed using reducing and non-reducing sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS-PAGE) and Western blot analysis. Further, antibodies against Echinococcus granulosus cysts in camel serum were detected using indirect ELISA.

Results: The purification process resulted in three fractions of antigens: FI, FII, and FIII. Indirect ELISA showed that higher diagnostic efficacy was observed in FI than in FII and FIII. Indirect ELISA, in which FI was utilized, showed 88% sensitivity and 91.7% specificity. Non-reducing SDS-PAGE showed that FI had two bands of molecular weights 120 and 60 kDa. Western blot analysis of FI demonstrated that 60, 38, and 22 kDa were antigenic bands when reacted with naturally infected camel sera with E. granulosus cysts. Using indirect ELISA, F1 recorded an infection percentage of 81.7% in randomly collected camel serum samples.

Conclusion: FI is a promising antigen for accurate diagnosis of camel CE using indirect ELISA. Keywords: camel hydatidosis, cystic echinococcosis, Echinococcus granulosus, gel filtration chromatography, hydatid cyst fluid, indirect enzyme-linked immunosorbent assay, sodium dodecyl sulfate–polyacrylamide gel electrophoresis, Western blot.

Keywords: camel hydatidosis, cystic echinococcosis, Echinococcus granulosus, gel filtration chromatography, hydatid cyst fluid, indirect enzyme-linked immunosorbent assay, sodium dodecyl sulfate–polyacrylamide gel electrophoresis, Western blot.

How to cite this article: Toaleb NI, Helmy MS, El Shanawany EE, Abdel-Rahman EH (2020) A simple and efficient purification method of native immunoreactive antigen for diagnosis of camel hydatidosis, Veterinary World, 13(1): 141-146.

Received: 06-08-2019 Accepted: 09-12-2019 Published online: 23-01-2020

Corresponding author: Nagwa I. Toaleb E-mail: nagwaibrahim26@yahoo.com

DOI: 10.14202/vetworld.2020.141-146

Copyright: Toaleb, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.