Recombinant OmpL1 protein as a diagnostic antigen for the detection of canine leptospirosis.

Appl Biochem Biotechnol

Department of Animal Biotechnology, Madras Veterinary College, TANUVAS, Chennai 600 007, Tamil Nadu, India.

Published: January 2013

AI Article Synopsis

  • The Microscopic Agglutination Test (MAT) is the current standard for diagnosing leptospirosis but is labor-intensive and subjective.
  • Researchers tested a new method using a recombinant-based IgG ELISA with outer membrane protein OmpL1 as an antigen.
  • Out of 475 canine serum samples, the IgG ELISA demonstrated 100% sensitivity compared to MAT, suggesting that it may be a more effective and reliable diagnostic tool for leptospirosis.

Article Abstract

Microscopic agglutination test (MAT) is the standard method for the diagnosis of leptospirosis, which is laborious and the interpretation of the results is subjective. The present work describes the use of recombinant-based IgG ELISA for the serodiagnosis of leptospirosis. We used recombinant outer membrane protein OmpL1 as an antigen for conducting IgG enzyme-linked immunosorbent assay (ELISA). A total of 475 canine serum samples were subjected to IgG ELISA; 294 sera were positive to ELISA, while 283 were positive to MAT. All samples that were positive to MAT were positive to ELISA also, however, few samples which were negative to MAT were positive to ELISA, which suggested that recombinant-based IgG ELISA showed 100 % sensitivity when compared to MAT. Thus, this present study showed that recombinant OmpL1-based IgG ELISA appears to be a better alternative to MAT for the diagnosis of leptospirosis and rOmpL1 protein could be used as a potential diagnostic antigen in different assay formats for leptospirosis.

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Source
http://dx.doi.org/10.1007/s12010-012-9973-4DOI Listing

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