Antigenic Proteins of excretory and secretory products purified from Cotylophoron cotylophorum.

Authors

  • Nailuj Barrios Universidad Centroccidental Lisandro Alvarado, Venezuela
  • José Agustín López Universidad Centroccidental Lisandro Alvarado, Venezuela
  • Franklin Mujica Universidad Centroccidental Lisandro Alvarado, Venezuela
  • Juan Uzcategui Universidad Centroccidental Lisandro Alvarado, Venezuela
  • María Forlano Universidad Centroccidental Lisandro Alvarado, Venezuela

Keywords:

<i>Cotylophoron</i>, proteins, bovines, antigens

Abstract

 

To diagnose the trematode Cotylophoron cotylophorum by the sedimentation and sieve technique has low efficiency when the parasite burden is low, because such technique has low sensitivity to diagnose the trematode eggs in the fecal samples. The main objective of this research was to purify some proteins from the secretory and excretory products of adult stages of C. cotylophorum with the aim of assessing its antigenicity by immunoelectrotransferency (Western Blot technique), next those proteins were used as antigens in an enzyme link immune assay (ELISA). First, 1,200 adult C. cotylophorum, collected directly from bovine´s rumen slaughtered at the local Matadero Industrial Centroccidental (MINCO), were incubated during 16 hours in Minimun Essential Eagle (MEM), and antigenic proteins were obtained from this MEM. Next, proteins were purified and concentrated by ultracentrifugation. An electrophoresis technique (SDS-PAGE) and a Western Blot were carried out to identify the antigenic proteins using an hyperimmune serum obtained from previously immunized rabbits with the purified proteins isolated from the excretory and secretory products of C. cotylophorum. Nine (9) protein bands were identified with molecular weights of: 17, 24, 43, 56, 62, 76, 83, 105, and 121 KDa, and three of these bands (62, 76, and 105 KDa) were recognized by the serum from four (4) bovines which had previously been diagnosed as positives to C. cotylophorum by coprologic tests. The protein with 76 KDa was the most reactive. Finally, these purified antigens may be used to develop immunoenzymatic assays with greater sensitivity and specificity, which would be very helpful tests for the diagnostic and epidemiologic study of C. cotylophorum in Venezuela.

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References

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Published

2017-12-05

How to Cite

Barrios, N., López, J. A., Mujica, F., Uzcategui, J., & Forlano, M. (2017). Antigenic Proteins of excretory and secretory products purified from Cotylophoron cotylophorum. Gaceta De Ciencias Veterinarias, 22(1), 4-12. Retrieved from https://revistas.uclave.org/index.php/gcv/article/view/738

Issue

Vol. 22 No. 1 (2017): July

Section

Original research article

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