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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3-4
pubmed:dateCreated
2010-3-29
pubmed:abstractText
Immunization using recombinant maltose binding protein-gonadotropin releasing hormone (MBP-GnRH6) altered both testicular development and transcription of the pituitary GnRH receptor (GnRHR) gene in boars. Scrotal measurement and blood samples were taken at 4-week interval after immunization at 9 weeks of age. The concentrations of testosterone and anti-GnRH antibodies in serum were determined by radioimmunoassay and enzyme-linked immunosorbent assay, respectively. The results showed that active immunization with MBP-GnRH6 increased the serum concentration of anti-GnRH antibodies (P<0.05) and reduced the serum concentration of testosterone (P<0.05) as compared with MBP controls. At 25 weeks of age, boars were sacrificed and testes were evaluated histologically. Testicular development was suppressed in the MBP-GnRH6 immunized animals as compared with MBP immunized boars. MBP-GnRH6 immunized pigs exhibited mounting behavior 4 weeks later than MBP immunized boars. No mature spermatozoa were observed from MBP-GnRH6 immunized animals. By real-time quantitative PCR analysis, the amount of GnRHR mRNA in the pituitary tissue was found to be significantly lower in MBP-GnRH6 immunized animals than in controls (P<0.05). These data demonstrate that recombinant MBP-GnRH6 was effective in immunological castration in boars.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1873-2232
pubmed:author
pubmed:copyrightInfo
Copyright (c) 2010 Elsevier B.V. All rights reserved.
pubmed:issnType
Electronic
pubmed:volume
119
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
275-81
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed-meshheading:20129744-Animals, pubmed-meshheading:20129744-Antibodies, pubmed-meshheading:20129744-Gonadotropin-Releasing Hormone, pubmed-meshheading:20129744-Male, pubmed-meshheading:20129744-Maltose-Binding Proteins, pubmed-meshheading:20129744-Periplasmic Binding Proteins, pubmed-meshheading:20129744-Pituitary Gland, pubmed-meshheading:20129744-Polymerase Chain Reaction, pubmed-meshheading:20129744-RNA, Messenger, pubmed-meshheading:20129744-Receptors, LHRH, pubmed-meshheading:20129744-Recombinant Fusion Proteins, pubmed-meshheading:20129744-Sexual Behavior, Animal, pubmed-meshheading:20129744-Spermatozoa, pubmed-meshheading:20129744-Sterilization, Reproductive, pubmed-meshheading:20129744-Swine, pubmed-meshheading:20129744-Testis, pubmed-meshheading:20129744-Testosterone, pubmed-meshheading:20129744-Vaccination
pubmed:year
2010
pubmed:articleTitle
Active immunization with recombinant GnRH fusion protein in boars reduces both testicular development and mRNA expression levels of GnRH receptor in pituitary.
pubmed:affiliation
Department of Animal Medicine, College of Animal Science and Technology, Anhui Agricultural University, No. 130 Changjiang West Road, Hefei, Anhui, PR China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't