Characterization of Mycobacterium paratuberculosis and “wood-pigeon” mycobacteria by isoenzyme profile and selective staining of immunoprecipitates

Cell-free extracts of various strains belonging to Mycobacterium paratuberculosis (Ptb) and “wood-pigeon” (WP) mycobacteria were compared by polyacrylamide gel electrophoresis and the various protein bands obtained were tested for peroxidase enzyme activity. One strain of Mycobacterium avium served...

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Veröffentlicht in:Research in microbiology 1990-06, Vol.141 (5), p.551-561
Hauptverfasser: Thorel, M.F, Blom-Potar, M.-C, Rastogi, N
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creator Thorel, M.F
Blom-Potar, M.-C
Rastogi, N
description Cell-free extracts of various strains belonging to Mycobacterium paratuberculosis (Ptb) and “wood-pigeon” (WP) mycobacteria were compared by polyacrylamide gel electrophoresis and the various protein bands obtained were tested for peroxidase enzyme activity. One strain of Mycobacterium avium served as a control. Bacterial extracts were also analysed by crossed immunoelectrophoresis (CRIEP) and fused rocket immunoelectrophoresis (FRIEP) using antisera raised in rabbit against M. paratuberculosis and WP mycobacteria. The immunoprecipitates obtained both in CRIEP and FRIEP plates were subsequently stained for selective peroxidase enzyme staining. Our results showed that, although Ptb and WP mycobacteria shared common peroxidase isoenzymes and antigens, they also had specific immunoprecipitates showing the differences between two groups of bacteria. Des extraits cellulaires de diverses souches de Mycobacterium paratuberculosis (Ptb) et de mycobactéries dénommées ⪡wood-pigeon⪢ (WP) ainsi que d'une souche de Mycobacterium avium comme témoin ont été comparés par electrophorèse en gel de polyacrylamide. L'activité enzymatique de la peroxydase des électrophorégrammes obtenus a été testée. Certains extraits cellulaires ont été également étudiés par immunoelectrophorèse bidimensionnelle et par immunoelectrophorèse en fusée à l'aide d'immunsérums de lapins anti-Ptb et anti-WP. Les gels obtenus ont été colorés au moyen d'une réaction mettant en évidence la peroxydase. Nos résultats montrent que, bien que M. paratuberculosis et les mycobactéries dénommées ⪡wood-pigeon⪢ possèdent des peroxydases et des antigènes communs, ils possèdent également des immunoprécipités spécifiques mettant en évidence des différences entre ces deux groupes.
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One strain of Mycobacterium avium served as a control. Bacterial extracts were also analysed by crossed immunoelectrophoresis (CRIEP) and fused rocket immunoelectrophoresis (FRIEP) using antisera raised in rabbit against M. paratuberculosis and WP mycobacteria. The immunoprecipitates obtained both in CRIEP and FRIEP plates were subsequently stained for selective peroxidase enzyme staining. Our results showed that, although Ptb and WP mycobacteria shared common peroxidase isoenzymes and antigens, they also had specific immunoprecipitates showing the differences between two groups of bacteria. Des extraits cellulaires de diverses souches de Mycobacterium paratuberculosis (Ptb) et de mycobactéries dénommées ⪡wood-pigeon⪢ (WP) ainsi que d'une souche de Mycobacterium avium comme témoin ont été comparés par electrophorèse en gel de polyacrylamide. L'activité enzymatique de la peroxydase des électrophorégrammes obtenus a été testée. Certains extraits cellulaires ont été également étudiés par immunoelectrophorèse bidimensionnelle et par immunoelectrophorèse en fusée à l'aide d'immunsérums de lapins anti-Ptb et anti-WP. Les gels obtenus ont été colorés au moyen d'une réaction mettant en évidence la peroxydase. Nos résultats montrent que, bien que M. paratuberculosis et les mycobactéries dénommées ⪡wood-pigeon⪢ possèdent des peroxydases et des antigènes communs, ils possèdent également des immunoprécipités spécifiques mettant en évidence des différences entre ces deux groupes.</abstract><cop>France</cop><pub>Elsevier SAS</pub><pmid>2218060</pmid><doi>10.1016/0923-2508(90)90019-M</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record>
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subjects ANALISIS QUIMICO
ANALYSE CHIMIQUE
Antigenic profiles, Diagnosis
CHEMICAL ANALYSIS
Electrophoresis, Polyacrylamide Gel
IDENTIFICACION
IDENTIFICATION
Immunoelectrophoresis
In Vitro Techniques
ISOENZIMAS
ISOENZYME
ISOENZYMES
Isoenzymes - analysis
Mycobacteriaceae - classification
Mycobacteriaceae - enzymology
Mycobacteriaceae - immunology
MYCOBACTERIUM
Mycobacterium - classification
Mycobacterium - enzymology
Mycobacterium - immunology
Mycobacterium paratuberculosis, Mycobactérie ⪡wood-pigeon⪢, Peroxydase
Mycobacterium paratuberculosis, ⪡Wood-pigeon⪢, peroxydase Peroxidase
Peroxidases - analysis
Profils antigéniques, Diagnostic
TAXONOMIA
TAXONOMIE
TAXONOMY
title Characterization of Mycobacterium paratuberculosis and “wood-pigeon” mycobacteria by isoenzyme profile and selective staining of immunoprecipitates
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