Enzootic Pneumonia
Mostrando 13-21 de 21 artigos, teses e dissertações.
-
13. Virulence of Pseudomonas aeruginosa and Spontaneous Spread of Pseudomonas Pneumonia in a Mink Ranch
Comparative studies on the virulence of two strains of Pseudomonas aeruginosa isolated from otic pus and mink pneumonic lesion, respectively, were made by means of intranasal inoculation in mink. The minimal lethal dose of the former (strain NC-5, highly virulent for mice) was 1010, and that of the latter (strain No. 5, moderately virulent for mice) was 5.5
-
14. Serum acute phase proteins and swine health status
The purpose of this study was to investigate the relationship between swine health status and the concentration of the serum acute phase proteins, haptoglobin (HP), and C-reactive protein (CRP). A total of 378 clinically healthy pigs from farms A and B, plus 20 pigs culled from farm A due to poor growth, were used in this experiment. Each pig was examined an
-
15. Molecular characterization of a ribonucleotide reductase (nrdF) gene fragment of Mycoplasma hyopneumoniae and assessment of the recombinant product as an experimental vaccine for enzootic pneumonia.
A Mycoplasma hyopneumoniae clone bank was screened with hyperimmune pig serum. One clone exhibited sequence homology to the prokaryotic R2 subunit of ribonucleotide reductase and was expressed as an 11-kDa protein fused to beta-galactosidase. The vaccine potential of the fusion protein was assessed in pig trials. Following experimental challenge with a virul
-
16. Stimulation of immunoglobulin-containing cells and isotype-specific antibody response in experimental Mycoplasma hyopneumoniae infection in specific-pathogen-free pigs.
The development of immunoglobulin-containing cells and antigen-specific plasma cells in retropharyngeal and bronchial lymph nodes, in lung tissue, and in nasal mucous membrane was followed during an experimental infection of pigs with Mycoplasma hyopneumoniae. An enzyme-linked immunosorbent assay was used to follow stimulation of the immunoglobulin isotypes
-
17. Cloning and expression of a species-specific early immunogenic 36-kilodalton protein of Mycoplasma hyopneumoniae in Escherichia coli.
Mycoplasma hyopneumoniae, the etiologic agent of porcine enzootic pneumonia, synthesizes a 36-kDa protein which is an early and strong immunogenic factor in experimentally and naturally infected swine. The gene encoding this protein was cloned by screening a gene library of M. hyopneumoniae DNA with rabbit hyperimmune serum made against whole M. hyopneumonia
-
18. Detection of Mycoplasma hyopneumoniae in nose swabs from pigs by in vitro amplification of the 16S rRNA gene.
We report the use of PCR to detect DNA from Mycoplasma hyopneumoniae, the etiological agent of enzootic porcine pneumonia. A primer set was designed for the amplification of a 649-bp fragment of the 16S rRNA gene from M hyopneumoniae. The PCR product was identified by ethidium bromide staining after gel electrophoresis and by Southern hybridization with an M
-
19. Expression and Immunogenicity of Mycoplasma hyopneumoniae Heat Shock Protein Antigen P42 by DNA Vaccination
Mycoplasma hyopneumoniae is the etiological agent of swine enzootic pneumonia, a chronic nonfatal disease affecting pigs of all ages. The goal of this study was to design DNA vaccines by constructing plasmid pcDNA3/P42, carrying the heat shock protein gene P42 of M. hyopneumoniae, and to evaluate the immune responses elicited in BALB/c mice. The expression o
American Society for Microbiology.
-
20. Species-Specific Monoclonal Antibodies to Escherichia coli-Expressed p36 Cytosolic Protein of Mycoplasma hyopneumoniae
The p36 protein of Mycoplasma hyopneumoniae is a cytosolic protein carrying species-specific antigenic determinants. Based on the genomic sequence of the reference strain ATCC 25934, primers were designed for PCR amplification of the p36-encoding gene (948 bp). These primers were shown to be specific to M. hyopneumoniae since no DNA amplicons could be obtain
American Society for Microbiology.
-
21. Monoclonal Antibodies to Escherichia coli-Expressed P46 and P65 Membranous Proteins for Specific Immunodetection of Mycoplasma hyopneumoniae in Lungs of Infected Pigs
The P46 and P65 proteins of Mycoplasma hyopneumoniae are two membranous proteins carrying species-specific antigenic determinants. Based on the genomic sequence of the reference strain ATCC 25934, primers were designed for PCR amplification of the genes encoding entire P46 (1,260 bp) and P65 (1,803 bp) and N-terminally truncated P65c (1,200 bp). These primer
American Society for Microbiology.