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PubMedDate not supplied

Localized bacillary angiomatosis in the oral cavity: observations about a neoplasm with atypical behavior. Description of a case and review of the literature.

Bacillary angiomatosis is a rather frequent infectious pathology appearing mainly in the skin but can also affect the liver, spleen, heart, bones, lungs, muscles, central nervous system and other organs. The localization of the lesion in the oral cavity is rather rare, as it is evident in the literature. Bacillary angiomatosis can be clinically similar to the Kaposi's sarcoma and histologically confused with angiosarcoma, epitheloid hemangioma and pyogenic granuloma. A case of bacillary angiomatosis of the oral cavity in an immuno-competent patient is described. The high tendency to relapse, the capability in migration and to involve several localizations at the same time have induced the authors to deepen the research to exclude the possibility that it could be a Kaposi's sarcoma or a pyogenic granuloma and to get to an accurate diagnosis in order to resolve the disease.

Adolescent↗
PubMed1994

Immunoelectrophoretic characterization and cross-reactivity of Rochalimaea henselae, Rochalimaea quintana and Afipia felis.

The soluble antigens of Rochalimaea henselae, Rochalimaea quintana and Afipia felis were characterized by crossed immunoelectrophoresis using bacterial sonicates as antigens against pooled hyperimmune rabbit sera. A precipitin pattern was drawn for each bacterium and shown to be reproducible and stable even when normal or preimmune rabbit serum was incorporated in the intermediate gel. By this technique 56 antigens were identified from R. henselae, 49 from R. quintana, and 39 from A. felis. The serological cross-reaction between R. henselae, R. quintana and A. felis, and between these 3 bacteria and 32 pathogenic bacteria was analysed by rocket-line immunoelectrophoresis, crossed-line immunoelectrophoresis, and tandem-crossed electrophoresis. It was concluded that (i) 4-7 antigens distinguish R. henselae, R. quintana and A. felis from each other, (ii) both Gram-positive and Gram-negative bacteria cross-react with R. henselae, R. quintana and A. felis antisera, (iii) the cross-reacting antigens of Gram-negative bacteria have both precipitating and non-precipitating specificities, whereas Gram-positive bacteria have mainly non-precipitating specificities, (iv) the cross-reacting antigens are common to several species, and (v) fewer cross-reacting antigens are found in phylogenetically disparate species than in more closely related species.

Angiomatosis, Bacillary↗
PubMed1994

Antibody response in rabbits infected with Rochalimaea henselae, Rochalimaea quintana and Afipia felis.

Antibody responses in three pairs of rabbits inoculated with live Rochalimaea henselae, Rochalimaea quintana and Afipia felis were studied by enzyme immunoassay with whole-cell and bacterial sonicates as antigen. No differences in measured antibody responses were found with the two types of antigen preparation. Two rabbits did not respond with antibody production. In the remaining rabbits there was a low-titred antibody response that showed no significant cross-reaction with related bacteria. After rechallenge the antibody response rose significantly and there was significant cross-reaction with related bacteria. The antigens involved in the antibody response were examined by crossed immunoelectrophoresis. After the initial inoculation 5-7 precipitin lines of the reference diagrams were deflected, including lines which cross-reacted with antigens found in related bacterial species. After reinoculation several more precipitin lines were deflected, including additional lines cross-reacting with antigens present in related bacteria and common bacterial antigens.

Animals↗
PubMed1995

Bartonellosis.

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Animals↗