[Examination of selected biological properties for swarm cells in Proteus mirabilis].

Certain biological properties, which generally are thought to play a role in the bacterial pathogenicity, were compared in short rods, swarm cells and penicillin-induced filaments of Proteus mirabilis S1959. Swarm cells of P. mirabilis S1959 weakly adhere to human uroepithelial cells and also do not penetrate L929 line of mouse fibroblasts.

Potential virulence factors of Proteus bacilli.

The object of this review is the genus Proteus, which contains bacteria considered now to belong to the opportunistic pathogens. Widely distributed in nature (in soil, water, and sewage), Proteus species play a significant ecological role. When present in the niches of higher macroorganisms, these species are able to evoke pathological events in different regions of the human body.

[Structural and immunologic studies of Proteus mirabilis 033 O-specific polysaccharide].

O-specific polysaccharide was obtained by mild acid degradation of P. mirabilis 033 lipopolysaccharide (LPS). It was found to contain N-acetyl-D-glucosamine, D-glucuronic acid and N-acetyl-L-fucosamine in a ratio 1:1:1.

[Characterization of hemolytic activity of Proteus penneri].

Bacteria belonging to the genus Proteus synthesise two kinds of hemolysins HpmA and HlyA which represent "RTX proteins". In previous papers we described the production of an extracellular HlyA hemolysin by some P. penneri strains.

Properties of a deep Proteus R mutant isolated from clinical material.

Some biological features of a deep P. mirabilis 17301 R mutant isolated from the urine of a patient with chronic UTI were studied and compared with similar features of P. mirabilis S forms and five induced Proteus R mutants of different chemotypes.