Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10964703 | Vaccine | 2015 | 6 Pages |
Abstract
Immunocastration using gonadotropin-releasing hormone (GnRH)-based vaccines has been investigated in rams to reduce aggressive and sexual behaviour and to control meat quality. Despite considerable efforts, a practical GnRH vaccine has yet to be developed for rams. In the present study, a A GnRH-lipopeptide vaccine (GnRH-LP) including two copies of GnRH, 2-amino-d,l-hexadecanoic acid (C16), and a unique T helper epitope, was examined in rams. Rams received a primary and secondary vaccination of GnRH-LP without additional adjuvant (Group 1) or with the adjuvant AdjuVac⢠(Group 2). In both Group 1 and 2 anti-GnRH antibody titres increased after secondary vaccination, however, the antibody titres were higher (p < 0.01) for rams in Group 2. The latter rams showed a marked decrease in testicular size. The marked and sustained reduction in testicular size in rams treated with GnRH-LP + AdjuVac⢠provides the basis for an effective immunocastration vaccine in rams.
Keywords
GnRHAcOHRP-HPLCTFATLCDCMFMOCEtOAcHClESIAc2OPBSDMFC16MECN9-fluorenylmethoxycarbonylBSAN,N-diisopropylethylaminebovine serum albuminAcetic anhydrideEthyl acetateEDTAEthylenediaminetetraacetic acidAcetonitrileTrifluoroacetic acidAcetic acidhydrofluoric acidhydrochloric acidImmunocastrationanalysis of varianceANOVANMRdimethyl formamideDichloromethaneRamMass spectrometryLipopeptideMethanolPhosphate-buffered salineMeOHDIPEAHATUGonadotropin-releasing hormonefollicle-stimulating hormoneluteinising hormoneFSHSubunit vaccinebody weightthin layer chromatographyelectrospray ionisation
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Authors
Daryn Goodwin, Pegah Varamini, Pavla Simerska, Michael J. D'Occhio, Istvan Toth,