Abstract
Type 8 capsular polysaccharide (CP8) is widely prevalent among clinical isolates of Staphylococcus aureus, but the role that the capsule plays in the pathogenesis of staphylococcal infections is unclear. This study was performed to identify growth conditions that would optimize the production of CP8 and to determine whether enhanced CP8 expression would influence staphylococcal virulence. S. aureus Becker grown in a chemically defined broth medium with < 1 microM ferric nitrate produced up to eightfold more CP8 per milligram of biomass than did bacteria cultivated in the same medium containing 20 microM ferric nitrate. The bacteria produced > 350-fold more cell-associated CP8 per milligram of biomass when grown on the surface of Columbia agar than when grown in Columbia broth. Most of the CP8 produced by broth-grown cells was secreted into the culture medium. S. aureus cultivated on the surface of nitrocellulose membranes floating on Columbia broth produced levels of CP8 similar to those produced by cells grown on Columbia agar. Similarly, bacteria harvested from endocardial vegetations of rabbits infected with S. aureus produced high levels of CP8. These results indicate that staphylococci grown on surfaces, both in vitro and in vivo, produce larger quantities of cell-associated CP8 than those grown in liquid cultures. However, no differences were observed in the 50% lethal dose for mice of strain Becker grown on solid medium (high levels of capsule expression) or in liquid medium (low levels of capsule expression).
Full text
PDFImages in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Albus A., Arbeit R. D., Lee J. C. Virulence of Staphylococcus aureus mutants altered in type 5 capsule production. Infect Immun. 1991 Mar;59(3):1008–1014. doi: 10.1128/iai.59.3.1008-1014.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Albus A., Fournier J. M., Wolz C., Boutonnier A., Ranke M., Høiby N., Hochkeppel H., Döring G. Staphylococcus aureus capsular types and antibody response to lung infection in patients with cystic fibrosis. J Clin Microbiol. 1988 Dec;26(12):2505–2509. doi: 10.1128/jcm.26.12.2505-2509.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Arbeit R. D., Dunn R. M. Expression of capsular polysaccharide during experimental focal infection with Staphylococcus aureus. J Infect Dis. 1987 Dec;156(6):947–952. doi: 10.1093/infdis/156.6.947. [DOI] [PubMed] [Google Scholar]
- Arbeit R. D., Karakawa W. W., Vann W. F., Robbins J. B. Predominance of two newly described capsular polysaccharide types among clinical isolates of Staphylococcus aureus. Diagn Microbiol Infect Dis. 1984 Apr;2(2):85–91. doi: 10.1016/0732-8893(84)90002-6. [DOI] [PubMed] [Google Scholar]
- Arbeit R. D., Nelles M. J. Capsular polysaccharide antigenemia in rats with experimental endocarditis due to Staphylococcus aureus. J Infect Dis. 1987 Feb;155(2):242–246. doi: 10.1093/infdis/155.2.242. [DOI] [PubMed] [Google Scholar]
- Baddour L. M., Lowrance C., Albus A., Lowrance J. H., Anderson S. K., Lee J. C. Staphylococcus aureus microcapsule expression attenuates bacterial virulence in a rat model of experimental endocarditis. J Infect Dis. 1992 Apr;165(4):749–753. doi: 10.1093/infdis/165.4.749. [DOI] [PubMed] [Google Scholar]
- Bullen J. J., Rogers H. J., Griffiths E. Role of iron in bacterial infection. Curr Top Microbiol Immunol. 1978;80:1–35. doi: 10.1007/978-3-642-66956-9_1. [DOI] [PubMed] [Google Scholar]
- COHN Z. A. Determinants of infection in the peritoneal cavity. I. Response to and fate of Staphylococcus aureus and Staphylococcus albus in the mouse. Yale J Biol Med. 1962 Aug;35:12–28. [PMC free article] [PubMed] [Google Scholar]
- Cheung A. L., Fischetti V. A. Variation in the expression of cell wall proteins of Staphylococcus aureus grown on solid and liquid media. Infect Immun. 1988 May;56(5):1061–1065. doi: 10.1128/iai.56.5.1061-1065.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- DUGUID J. P., WILKINSON J. F. The influence of cultural conditions on polysaccharide production by Aerobacter aerogenes. J Gen Microbiol. 1953 Oct;9(2):174–189. doi: 10.1099/00221287-9-2-174. [DOI] [PubMed] [Google Scholar]
- Dassy B., Stringfellow W. T., Lieb M., Fournier J. M. Production of type 5 capsular polysaccharide by Staphylococcus aureus grown in a semi-synthetic medium. J Gen Microbiol. 1991 May;137(5):1155–1162. doi: 10.1099/00221287-137-5-1155. [DOI] [PubMed] [Google Scholar]
- Doran T. I., Straus D. C., Mattingly S. J. Factors influencing release of type III antigens by group B streptococci. Infect Immun. 1981 Feb;31(2):615–623. doi: 10.1128/iai.31.2.615-623.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fournier J. M., Hannon K., Moreau M., Karakawa W. W., Vann W. F. Isolation of type 5 capsular polysaccharide from Staphylococcus aureus. Ann Inst Pasteur Microbiol. 1987 Sep-Oct;138(5):561–567. doi: 10.1016/0769-2609(87)90041-x. [DOI] [PubMed] [Google Scholar]
- Gray B. M. ELISA methodology for polysaccharide antigens: protein coupling of polysaccharides for adsorption to plastic tubes. J Immunol Methods. 1979;28(1-2):187–192. doi: 10.1016/0022-1759(79)90340-5. [DOI] [PubMed] [Google Scholar]
- Hochkeppel H. K., Braun D. G., Vischer W., Imm A., Sutter S., Staeubli U., Guggenheim R., Kaplan E. L., Boutonnier A., Fournier J. M. Serotyping and electron microscopy studies of Staphylococcus aureus clinical isolates with monoclonal antibodies to capsular polysaccharide types 5 and 8. J Clin Microbiol. 1987 Mar;25(3):526–530. doi: 10.1128/jcm.25.3.526-530.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]
- KOENIG M. G. Factors relating to the virulence of staphylococci. I. Comparative studies on two colonial variants. Yale J Biol Med. 1962 Jun;34:537–559. [PMC free article] [PubMed] [Google Scholar]
- Lee J. C., Betley M. J., Hopkins C. A., Perez N. E., Pier G. B. Virulence studies, in mice, of transposon-induced mutants of Staphylococcus aureus differing in capsule size. J Infect Dis. 1987 Nov;156(5):741–750. doi: 10.1093/infdis/156.5.741. [DOI] [PubMed] [Google Scholar]
- Lee J. C., Liu M. J., Parsonnet J., Arbeit R. D. Expression of type 8 capsular polysaccharide and production of toxic shock syndrome toxin 1 are associated among vaginal isolates of Staphylococcus aureus. J Clin Microbiol. 1990 Dec;28(12):2612–2615. doi: 10.1128/jcm.28.12.2612-2615.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lee J. C., Michon F., Perez N. E., Hopkins C. A., Pier G. B. Chemical characterization and immunogenicity of capsular polysaccharide isolated from mucoid Staphylococcus aureus. Infect Immun. 1987 Sep;55(9):2191–2197. doi: 10.1128/iai.55.9.2191-2197.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lorian V. In vitro simulation of in vivo conditions: physical state of the culture medium. J Clin Microbiol. 1989 Nov;27(11):2403–2406. doi: 10.1128/jcm.27.11.2403-2406.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lorian V., Zak O., Suter J., Bruecher C. Staphylococci, in vitro and in vivo. Diagn Microbiol Infect Dis. 1985 Sep;3(5):433–444. doi: 10.1016/0732-8893(85)90082-3. [DOI] [PubMed] [Google Scholar]
- Masson L., Holbein B. E. Influence of nutrient limitation and low pH on serogroup B Neisseria meningitidis capsular polysaccharide levels: correlation with virulence for mice. Infect Immun. 1985 Feb;47(2):465–471. doi: 10.1128/iai.47.2.465-471.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Meiwes J., Fiedler H. P., Haag H., Zähner H., Konetschny-Rapp S., Jung G. Isolation and characterization of staphyloferrin A, a compound with siderophore activity from Staphylococcus hyicus DSM 20459. FEMS Microbiol Lett. 1990 Jan 15;55(1-2):201–205. doi: 10.1111/j.1574-6968.1990.tb13863.x. [DOI] [PubMed] [Google Scholar]
- Mills J. T., Dodel A. W., Kass E. H. Regulation of staphylococcal toxic shock syndrome toxin-1 and total exoprotein production by magnesium ion. Infect Immun. 1986 Sep;53(3):663–670. doi: 10.1128/iai.53.3.663-670.1986. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Poutrel B., Boutonnier A., Sutra L., Fournier J. M. Prevalence of capsular polysaccharide types 5 and 8 among Staphylococcus aureus isolates from cow, goat, and ewe milk. J Clin Microbiol. 1988 Jan;26(1):38–40. doi: 10.1128/jcm.26.1.38-40.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sande M. A., Johnson M. L. Antimicrobial therapy of experimental endocarditis caused by Staphylococcus aureus. J Infect Dis. 1975 Apr;131(4):367–375. doi: 10.1093/infdis/131.4.367. [DOI] [PubMed] [Google Scholar]
- Sompolinsky D., Samra Z., Karakawa W. W., Vann W. F., Schneerson R., Malik Z. Encapsulation and capsular types in isolates of Staphylococcus aureus from different sources and relationship to phage types. J Clin Microbiol. 1985 Nov;22(5):828–834. doi: 10.1128/jcm.22.5.828-834.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wiley B. B., Maverakis N. H. Capsule production and virulence among strains of Staphylococcus aureus. Ann N Y Acad Sci. 1974 Jul 31;236(0):221–232. doi: 10.1111/j.1749-6632.1974.tb41493.x. [DOI] [PubMed] [Google Scholar]
- Xu S., Arbeit R. D., Lee J. C. Phagocytic killing of encapsulated and microencapsulated Staphylococcus aureus by human polymorphonuclear leukocytes. Infect Immun. 1992 Apr;60(4):1358–1362. doi: 10.1128/iai.60.4.1358-1362.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]