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1

Structural and serological characterization of the lipopolysaccharide from proteus penneri 20 and classification of cross-reacting proteus penneri strains 10, 16, 18, 20, 32 and 45 in proteus serogroup O17

100%
Sidorczyk Z., Toukach F. V., Zych K., Arbatsky N. P., Drzewiecka D., Ziolkowski A., Shashkov A. S., Knirel Y. A.
Archivum Immunologiae et Therapiae Experimentalis
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2002
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vol. 50
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issue 5
345-355
EN
O-specific polysaccharide (O-antigen) of the lipopolysaccharide of Proteus penneri 20 was studied using sugar analysis along with various one- and two-dimensional NMR spectroscopy techniques. The structure of the polysaccharide was established. It has the same carbohydrate backbone structure as that described earlier for P. penneri 16, in which the positions of the O-acetyl groups have not been determined. P. penneri 20 O-antiserum showed a strong cross-reactivity with the lipopolysaccharides of P. penneri 10, 16, 18, 32, 45 and P. mirabilis O17. These data enable classifying these strains together with P. penneri 20 in one Proteus serogroup, O17.
2

Serological classification and epitope specificity of Proteus penneri S29 lipopolysaccharide

100%
Zych K., Siwinska M., Sidorczyk Z.
Archivum Immunologiae et Therapiae Experimentalis
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2005
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vol. 53
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issue 6
540-545
EN
Gram-negative bacteria of genus Proteus are common human intestinal and urinary tract pathogens. In the genus Proteus there are four clinically important named species: P. mirabilis, P. vulgaris, P. penneri, and P. hauseri, and three unnamed Proteus genomospecies: 4, 5, and 6. The clinical significance of P. penneri, described in 1982 as a new species, is poorly documented. The aim of this work is serological characterization and classification of a ceftriaxone-susceptible P. penneri S29 strain isolated from a 34-year-old patient with postneurosurgical meningitis. In this characterization we will also include a ceftriaxon-resistant strain, P. penneri R15, isolated from the same patient after 12 days' treatment with ceftriaxon and other antibiotics. Rabbit polyclonal O-antisera were obtained against these two strains and purified lipopolysaccharides (LPS) were extracted from the bacterial mass of the P. penneri S29 and R15 strains. In the serological investigations the following tests were used: enzyme immunosorbent assay (EIA), passive immunohemolysis (PIH), inhibition of these tests, absorption of rabbit O-antisera with the respective LPS, and repeated PIH, SDS/PAGE, and Western blot techniques. The serological studies of the LPS extracted from both P. penneri strains showed the identity of both preparations of O-polysaccharides from LPS.. In P. penneri S29 O-antiserum, four different types of antibodies were described and characterized. Both investigated P. penneri S29 and R15 strains were classified to the Proteus O31ab serogroup.
3

Application of two different kinds of sera against the Proteus penneri lipopolysaccharide core region in search of epitopes determining cross-reactions with antibodies

88%
Palusiak A., Dzieciatkowska M., Sidorczyk Z.
Archivum Immunologiae et Therapiae Experimentalis
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2008
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vol. 56
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issue 2
135-140
EN
Introduction: Proteus penneri lipopolysaccharide (LPS) core regions are characterized by a greater structural variability than that observed in other Enterobacteriaceae. This fact and the small amount of published data concerning the serological activity of this part of P. penneri LPS prompted an examination of which fragment might determine cross-reactions with antibodies. To date, such epitopes have been found in the LPS core regions of P. mirabilis and P. vulgaris strains. Materials and Methods: Proteus sp. LPSs were tested with unabsorbed rabbit antisera by enzyme-linked immunosorbent assay (ELISA), sodium dodecyl sulfate polyacrylamide gel electrophoresis and Western blot, and once again by ELISA or passive immunohemolysis after the absorption of these antisera with selected LPSs. Results: The serological studies of P. penneri 8 LPS demonstrated antibodies in the tested antisera recognizing a common epitope located in the core regions of six of the LPSs, i.e. P. penneri 8, 34, 133, 7, 14, and 15. Additionally, another type of antibody directed against some fragment of P. penneri 13 and the core regions of other LPSs investigated was observed in one antiserum. Conclusions: A distal, trisaccharide fragment of the P. penneri 8 LPS core region is suggested to determine the cross-reactions of the tested antisera with the six P. penneri LPSs.
4

Characterization and serological classification of a collection of Proteus penneri clinical strains

88%
Drzewiecka D., Zych K., Sidorczyk Z.
Archivum Immunologiae et Therapiae Experimentalis
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2004
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vol. 52
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issue 2
121-128
EN
Chronic Granulomatous disease bacteria of the genus Proteus, which are a common cause of urinary tract infections, are divided into four species: P. mirabilis, P. vulgaris, P. penneri, and P. hauseri, and three unnamed genomospecies, Proteus 4, 5, and 6 (single-strain species P. myxofaciens was isolated from the gypsy moth). Establishing the serological classification of these species would aid in completing the classification scheme of the whole genus Proteus and in applying serological methods in diagnostic procedures and epidemiological investigations for these opportunistic pathogens. The aim of this research was a serological characterization and classification of 57 Proteus penneri clinical strains, isolated from patients from different countries all over the world, into Proteus O serogroups. Purified lipopolysaccharides (LPSs) extracted from 57 P. penneri strains were used as antiandgens in enzyme immunosorbent assay (EIA), SDS/PAGE, and Western blot techniques, and alkali-treated LPSs in passive immunohemolysis test (PIH), inhibition of PIH, and absorption of rabbit polyclonal O-antisera. Results: That result confirms the serological distinction of this species within the genus Proteus, and may have diagnostic significance. Conclusions: As a result of serological studies of LPSs extracted from the P. penneri strains, one new Proteus serogroup, represented by the P. penneri 97 strain, was established. Three further strains were classified into the Proteus serogroup O8, which had not contained any P. penneri strains before. All the remaining strains were classified into 11 already existing Proteus O serogroups. It is important to emphasize that 72% of studied strains were classified into serogroups that contain P. penneri strains only.
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