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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
06/10/2008 |
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Data da última atualização: |
24/08/2023 |
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Autoria: |
SUTRA, L.; MENDOLIA, C.; RAINARD, P.; POUTREL, B. |
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Título: |
Encapsulation of Staphylococcus aureus isolates from mastitic milk: relationship between Capsular Polysaccharide Types 5 and 8 and colony morphology in serum-soft agar, clumping factor, teichoic acid, and protein A. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Journal of Clinical Microbiology, v. 28, n. 3, p. 447-451, Mar. 1990. |
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DOI: |
https://doi.org/10.1128/jcm.28.3.447-451.1990 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: A total of 193 Staphylococcus aureus isolates from bovine, caprine, and ovine mastitis producing type 5 or 8 capsular polysaccharides were investigated for colony morphology in serum-soft agar and agglutinability by an anti-teichoic acid serum, after cultivation in modified staphylococcus medium no. 110. Also, 40 of these strains were cultivated in brain heart infusion and submitted to clumping factor and protein A detection tests. Considering capsular serotyping as a reference method, diffuse growth in serum-soft agar and inagglutinability by anti-teichoic acid serum identified, respectively, 57.5 and 45% of encapsulated strains cultivated in brain heart infusion and 85.5 and 77.2% of those cultivated in modified staphylococcus medium 110. Consequently, these indirect techniques underestimated encapsulation and were greatly influenced by culture conditions. Whatever the medium used, diffuse colony morphology in serum-soft agar was generally characterized by a masking of teichoic acid and protein A. By contrast, these surface antigens were detected in association with compact morphology; the presence of a thin or discontinuous capsular material could explain this result. Moreover, the masking of teichoic acid and the removal of capsular polysaccharide by washing in saline suggest that type 8 capsular polysaccharide is more abundant and labile than type 5. |
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Palavras-Chave: |
Mastite; Staphylococcal Protein A. |
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Thesagro: |
Staphylococcus Aureus. |
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Thesaurus Nal: |
Bovine mastitis; Cattle diseases; Goat diseases; Immunology; Infection; Microbiology; Milk; Polysaccharides; Sheep diseases; Teichoic acids. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02460naa a2200325 a 4500
001 1533542
005 2023-08-24
008 1990 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1128/jcm.28.3.447-451.1990$2DOI
100 1 $aSUTRA, L.
245 $aEncapsulation of Staphylococcus aureus isolates from mastitic milk$brelationship between Capsular Polysaccharide Types 5 and 8 and colony morphology in serum-soft agar, clumping factor, teichoic acid, and protein A.$h[electronic resource]
260 $c1990
520 $aAbstract: A total of 193 Staphylococcus aureus isolates from bovine, caprine, and ovine mastitis producing type 5 or 8 capsular polysaccharides were investigated for colony morphology in serum-soft agar and agglutinability by an anti-teichoic acid serum, after cultivation in modified staphylococcus medium no. 110. Also, 40 of these strains were cultivated in brain heart infusion and submitted to clumping factor and protein A detection tests. Considering capsular serotyping as a reference method, diffuse growth in serum-soft agar and inagglutinability by anti-teichoic acid serum identified, respectively, 57.5 and 45% of encapsulated strains cultivated in brain heart infusion and 85.5 and 77.2% of those cultivated in modified staphylococcus medium 110. Consequently, these indirect techniques underestimated encapsulation and were greatly influenced by culture conditions. Whatever the medium used, diffuse colony morphology in serum-soft agar was generally characterized by a masking of teichoic acid and protein A. By contrast, these surface antigens were detected in association with compact morphology; the presence of a thin or discontinuous capsular material could explain this result. Moreover, the masking of teichoic acid and the removal of capsular polysaccharide by washing in saline suggest that type 8 capsular polysaccharide is more abundant and labile than type 5.
650 $aBovine mastitis
650 $aCattle diseases
650 $aGoat diseases
650 $aImmunology
650 $aInfection
650 $aMicrobiology
650 $aMilk
650 $aPolysaccharides
650 $aSheep diseases
650 $aTeichoic acids
650 $aStaphylococcus Aureus
653 $aMastite
653 $aStaphylococcal Protein A
700 1 $aMENDOLIA, C.
700 1 $aRAINARD, P.
700 1 $aPOUTREL, B.
773 $tJournal of Clinical Microbiology$gv. 28, n. 3, p. 447-451, Mar. 1990.
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