Vet World   Vol.11   November-2018  Article-19

Antibody immunoglobulin G1 and immunoglobulin G2a responses against some cystic fluid proteins of Cysticercus bovis in Balb/c mice

Background and Aim: Immunoglobulin (Ig) G1 and IgG2a are the surrogate markers respectively for humoral and cellular immune responses of hosts against antigens including cystic fluid proteins of Cysticercus bovis. A study was conducted to investigate the IgG1 and IgG2a responses of Balb/c mice against some individual cystic fluid proteins of C. bovis in an effort to determine the roles of each protein in inducing the humoral and cellular immune responses in host.

Materials and Methods: Individual p71, p31, and p14 proteins of C. bovis were purified by separation of the proteins using sodium dodecyl sulfate-polyacrylamide gel electrophoresis and elution of individual proteins from the gel. Six female Balb/c mice were immunized 4 times at 10-day intervals with the crude cystic fluid proteins, and sera were collected for the measurement of IgG1 and IgG2a levels against the individual proteins. Sera samples collected before the first immunization were used as negative antibody control, sera samples collected after the fourth immunization were used as positive antibody control, and crude cystic fluid protein was used as positive antigen control.

Results: All immunized mice were immune to p71, p31, p14, and crude cystic fluid proteins of C. bovis. The crude cystic fluid proteins of C. bovis induced a higher IgG2a than IgG1 level following the first and the second immunizations but switched into a higher IgG1 than IgG2a level following the fourth immunization. Protein 71 kDa (p71) induced a higher IgG2a than IgG1 level following the fourth immunization. In contrast, p14 induced a higher IgG1 than IgG2a level following the fourth immunization. Low and balance IgG1 and IgG2a levels against p31 were observed following the first to the fourth immunizations.

Conclusion: Using IgG1 and IgG2a levels as the surrogate markers, it appears that cystic fluid antigens of C. bovis induce both humoral and cellular immune responses in Balb/c mice. The p71 appears to be a better inducer of cellular immune response, whereas p14 is a better inducer of humoral immune response of mice. Keywords: Cystic fluid, Cysticercus bovis, immunoglobulin G1, immunoglobulin G2a, proteins.

Keywords: Cystic fluid, Cysticercus bovis, immunoglobulin G1, immunoglobulin G2a, proteins.

How to cite this article: Astawa, INM, Oka IBM, Dwinata IM (2018) Antibody immunoglobulin G1 and immunoglobulin G2a responses against some cystic fluid proteins of Cysticercus bovis in Balb/c mice. Veterinary World, 11(11): 1641-1647.

Received: 17-07-2018  Accepted: 11-10-2018     Published online: 30-11-2018

Corresponding author: I Nyoman Mantik Astawa   E-mail: mantik.astawa@unud.ac.id

DOI: 10.14202/vetworld.2018.1641-1647

Copyright: Astawa, 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.