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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1995-1-20
pubmed:abstractText
Nineteen, 7- to 13-week-old pigs were inoculated intranasally with different strains of Haemophilus parasuis (serovar 1, 4 and 5), and the pathological lesions induced by each strain were compared. Eleven of thirteen pigs inoculated with either strain Nagasaki (serovar 5) or No. 4 (serovar 1) died between days 1 to 6 after inoculation, and had septicemic lesions, meningitis, or polyserositis. One of six pigs inoculated with strain SW124 (serovar 4) died with polyserositis, another one recovered after illness, and the remaining four pigs remained in good health. Five of the septicemic pigs had thrombi at many organs. Endotoxin was detected in the plasma of 10 pigs in the acute stage of infection. Using the immunoperoxidase technique, H. parasuis antigen was detected in lesions of infected pigs. In the serosal lesions the bacterial antigen was found mainly in the cytoplasm of infiltrating neutrophils and macrophages and appeared as degenerated bacteria and/or lytic bacterial material in dilated phagosomes. Many of the bacteria in the blood vessels of pigs with septicemic lesions were also degenerated. Although H. parasuis was reisolated from nasal secretions of infected pigs, the bacterial antigen could not be detected in the nasal cavities of these pigs. No lesions were observed in the parenchyma of the lung. However, H. parasuis antigen was detected in the tonsil of infected pigs.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0916-7250
pubmed:author
pubmed:issnType
Print
pubmed:volume
56
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
639-44
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Pathologic observations of pigs intranasally inoculated with serovar 1, 4 and 5 of Haemophilus parasuis using immunoperoxidase method.
pubmed:affiliation
Institute of Animal Health, Shizuoka Prefecture, Japan.
pubmed:publicationType
Journal Article