Détection par CG-SM de l'acide tuberculostéarique dans le L.C.R. d'un malade atteint de méningite tuberculeuse

La chromatographie en phase gazeuse, couplée à la spectrométrie de masse utilisant la détection par sélection d'ions, a permis de mettre en évidence l'acide tuberculostéarique (ou 10-méthyloctadécanoïque), constituant caractéristique des mycobactéries. L'ionisation par impact électron...

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Published inMédecine et maladies infectieuses Vol. 15; no. 10; pp. 601 - 603
Main Authors Decoux, G., Ducros, V., Favier, A., Rouhan, D., Duborgel, S., Le Noc, P., Jean, D.
Format Journal Article
LanguageFrench
Published Paris Elsevier SAS 01.10.1985
Elsevier
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Abstract La chromatographie en phase gazeuse, couplée à la spectrométrie de masse utilisant la détection par sélection d'ions, a permis de mettre en évidence l'acide tuberculostéarique (ou 10-méthyloctadécanoïque), constituant caractéristique des mycobactéries. L'ionisation par impact électronique est une méthode suffisante pour la détection de cet acide dans les cultures de M. tuberculosis. Dans les expectorations ou le L.C.R., pour augmenter la sensibilité de la détection, nous avons essayé l'ionisation chimique. Par cette technique, nous avons pu rétrospectivement mettre en évidence cet acide dans le premier prélèvement de L.C.R. d'un enfant suspecté de méningite tuberculeuse où les examens directs de bactériologie étaient restés négatifs. Gas chromatography — mass spectrometry (GC-MS) and selected ion monitoring (SIM) was used to detect 10-methyloctadecanoïc (tubercustearic) acid, a charactéristic constituent of mycobacteria. When using electron ionization (EI), this fatty acid could be detected in culture media of M. tuberculosis. To increase the sensitivity of detection in sputum or CSF samples, we have tested the chemical ionization (CI). By this technique (CI-SIM), the presence of tuberculostearic acid was retropectively demonstrated in a CSF sample collected before treatment. This patient was suspected of having a tuberculous meningitis. Futhermore, no acid-fast bacilli was detected on smears.
AbstractList La chromatographie en phase gazeuse, couplée à la spectrométrie de masse utilisant la détection par sélection d'ions, a permis de mettre en évidence l'acide tuberculostéarique (ou 10-méthyloctadécanoïque), constituant caractéristique des mycobactéries. L'ionisation par impact électronique est une méthode suffisante pour la détection de cet acide dans les cultures de M. tuberculosis. Dans les expectorations ou le L.C.R., pour augmenter la sensibilité de la détection, nous avons essayé l'ionisation chimique. Par cette technique, nous avons pu rétrospectivement mettre en évidence cet acide dans le premier prélèvement de L.C.R. d'un enfant suspecté de méningite tuberculeuse où les examens directs de bactériologie étaient restés négatifs. Gas chromatography — mass spectrometry (GC-MS) and selected ion monitoring (SIM) was used to detect 10-methyloctadecanoïc (tubercustearic) acid, a charactéristic constituent of mycobacteria. When using electron ionization (EI), this fatty acid could be detected in culture media of M. tuberculosis. To increase the sensitivity of detection in sputum or CSF samples, we have tested the chemical ionization (CI). By this technique (CI-SIM), the presence of tuberculostearic acid was retropectively demonstrated in a CSF sample collected before treatment. This patient was suspected of having a tuberculous meningitis. Futhermore, no acid-fast bacilli was detected on smears.
Author Jean, D.
Ducros, V.
Rouhan, D.
Le Noc, P.
Decoux, G.
Favier, A.
Duborgel, S.
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Cites_doi 10.1016/S0378-4347(00)81468-1
10.1016/S0378-4347(00)81490-5
10.1016/S0140-6736(83)91676-8
10.1172/JCI109380
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Issue 10
Keywords Spectrométrie de masse
Meningitis
Méningite
Mycobacterium tuberculosis
Mass spectrometry
Biochimie
Bactériose
Liquide céphalorachidien
Diagnostic
Mycobactériose
Tuberculose
Chromatographie phase gazeuse
Infection
Homme
Mycobacteriales
Mycobacteriaceae
Système nerveux pathologie
Tuberculostéarique acide
Actinomycetes
Bactérie
Spectrométrie masse
Language French
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Larsson, Mardh, Odham (bib1) 1979; 163
Larsson, Mardh, Odham, Westerdahl (bib3) 1981; 89
Mardh, Larsson, Hoiby, Engbaek, Odham (bib4) 1983; 1
Larsson, Mardh, Odham, Westerdahl (bib2) 1980; 182
Larsson (10.1016/S0399-077X(85)80021-4_bib2) 1980; 182
Odham (10.1016/S0399-077X(85)80021-4_bib5) 1979; 63
Mardh (10.1016/S0399-077X(85)80021-4_bib4) 1983; 1
Larsson (10.1016/S0399-077X(85)80021-4_bib3) 1981; 89
Larsson (10.1016/S0399-077X(85)80021-4_bib1) 1979; 163
References_xml – volume: 63
  start-page: 813
  year: 1979
  end-page: 819
  ident: bib5
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– volume: 182
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  article-title: Detection of tuberculostearic acid in mycobacteria and nocardiase by gas chromatography and mass spectrometry using selected ion monitoring
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– volume: 182
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  doi: 10.1172/JCI109380
  contributor:
    fullname: Odham
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SubjectTerms Bactérioses
Bactérioses humaines
Mass spectrometry
Meningitis
Mycobacterium tuberculosis
Méningite
Pathologie infectieuse
Sciences biologiques et medicales
Sciences medicales
Spectrométrie de masse
Tuberculose et mycobactérioses atypiques
Title Détection par CG-SM de l'acide tuberculostéarique dans le L.C.R. d'un malade atteint de méningite tuberculeuse
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