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PubMed1994

[Multocida Pasteurella and leg ulcer].

INTRODUCTION: We observed two cases of Pasteurella and discuss the role of bacterial sampling in ulcerations of the lower limb. CASE REPORTS: In the first case, Pasteurella was discovered in an ulceration of the lower limb and was cured with no particularly specific care. In the second case, Pasteurella had been inoculated by scratching an ulceration and could not be cured without specific treatment. DISCUSSION: No specific pathological consequence in chronic carriers could be possible, a situation which has often been reported in the literature. Pasteurella is an unusual specific cause of ulcerations of the lower limb.

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Partial purification of cross-protection factor(s) from Pasteurella multocida.

Membrane-associated cross-protection factor(s) (CPF) of in vivo-grown Pasteurella multocida were solubilized by detergent and partially purified by sequential chromatography on ion exchange, gel filtration, and hydroxyapatite columns. The CPF activity was determined by challenge of turkeys vaccinated with different chromatography fractions and challenge of poults passively immunized with serum from the same vaccinated turkeys. Analyses of different chromatography fractions by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and immunoblots suggested that proteins in the range of 59-65 kDa and a protein of 39-kDa molecular mass were associated with cross-protection. Although CPF activity was found to be associated with protein-containing material, treatment with periodate diminished cross-protection, indicating that carbohydrate determinants may also contribute to immune cross-protection.

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Consumptive coagulopathy in turkeys exposed to Pasteurella multocida.

When turkeys were inoculated intramuscularly with live Pasteurella multocida, three of the four inoculated turkeys developed an increase in modified Russell's viper venom time (mRVVT) 24 hours after inoculation. This increase was followed by irregular decreases and increases in mRVVT at subsequent bleedings. When turkeys were inoculated intravenously with P. multocida, the mRVVT increased markedly after inoculation in all eight inoculated turkeys: 9 hours later, the average mRVVT was significantly (P < 0.05) higher than that of the uninoculated turkeys. No microthrombi were observed in the blood vessels of the liver, spleen, kidneys, or lungs. An increase in mRVVT was interpreted as an excessive consumption of one or more of clotting factors X, V, II, and I. These results indicate that consumptive coagulopathy could be a factor in the pathogenesis of fowl cholera in turkeys.

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PubMedDate not supplied

Serotypes and DNA fingerprint profiles of Pasteurella multocida isolated from raptors.

Pasteurella multocida isolates from 21 raptors were examined by DNA fingerprint profile and serotyping methods. Isolates were obtained from noncaptive birds of prey found in 11 states from November 28, 1979, through February 10, 1993. Nine isolates were from bald eagles, and the remaining isolates were from hawks, falcons, and owls. Seven isolates were members of capsule group A, and 14 were nonencapsulated. One isolate was identified as somatic type 3, and another was type 3,4,7; both had unique HhaI DNA fingerprint profiles. Nineteen isolates expressed somatic type 1 antigen; HhaI profiles of all type 1 isolates were identical to each other and to the HhaI profile of the reference somatic type 1, strain X-73. The 19 type 1 isolates were differentiated by sequential digestion of DNA with HpaII; four HpaII fingerprint profiles were obtained. The HpaII profile of one isolate was identical to the HpaII profile of strain X-73. Incidence of P. multocida somatic type 1 in raptors suggests that this type may be prevalent in other wildlife or wildlife environments.

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