1. The absorption of typhus sera (human or antityphus horse serum) with Proteus X-19 removes only the Proteus agglutinins, leaving the Rickettsia agglutinins intact. 2. The absorption of typhus sera with Mexican Rickettsiae removes the agglutinins for both the Rickettsia and Proteus X-19. 3. While normal or formalinized Rickettsiae are not agglutinated by anti-Proteus serum, these organisms-whe...

A bacteriphage typing scheme for differentiating Proteus isolated from clinical specimens was developed. Twenty-one distinct patterns of lysis were seen when 15 bacteriophages isolated on 8 Proteus mirabilis, 1 P. vulgaris, and 1 P. morganii were used to type 162 of 189 (85.7%) P. mirabilis and P. vulgaris isolates. Seven phages isolated on 3 P. morganii were used to type 13 of 19 (68.4%) P. mo...

the ability of subminimum inhibitory concentrations (sub-mics) of antibiotics to affect the virulence factors of bacteria may be an important criterion in selecting an antibiotic for therapy. proteus mirabilis is one of the most frequently seen pathogens in urinary tract infections. the aim of this study was to analyze the effects of some antibiotics on two important virulence factors of p. mir...

Chromosome-Encoded Class D -Lactamase OXA-23 in Proteus mirabilis R. Bonnet,* H. Marchandin, C. Chanal, D. Sirot, R. Labia, C. De Champs, E. Jumas-Bilak, and J. Sirot Laboratoire de Bactériologie, Faculté de Médecine, 63001 Clermont-Ferrand Cedex, Laboratoire de Bactériologie, Hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, UMR 175, CNRS-MNHN, 29000 Quimper, Laboratoire de Bactériologi...

Proteus species are well-known opportunistic pathogens frequently associated with skin wound and urinary tract infections in humans and animals. O antigen diversity is important for bacteria to adapt to different hosts and environments, and has been used to identify serotypes of Proteus isolates. At present, 80 Proteus O-serotypes have been reported. Although the O antigen structures of most Pr...

Quantitative urine culture by the dipinoculum technique of Mackey and Sandys (1965) has shown that the pattern of infection in male children is quite different from that of female children. Among boys under the age of 14 Proteus mirabilis is the causative organism in about 75% of cases of active urinary infection. By contrast only 15% of infection in girls is due to Proteus, the dominant pathog...

Rheumatoid arthritis (RA) is a systemic and arthritic autoimmune disease affecting millions of people throughout the world. During the last 4 decades extensive data indicate that subclinical urinary tract infection by Proteus mirabilis has a role in the aetiopathogenesis of RA based on cross-reactivity or molecular mimicry between Proteus haemolysin and RA-associated HLA-DRB1 alleles as well as...