1887

Abstract

Lancefield group F streptococci have been found almost exclusively as members of the ‘’ group, although they have been reported very occasionally in some other streptococcal species. Among 302 patients with bacteraemia caused by viridans streptococci over a 6-year period, three cases were caused by (type strain HKU4, HKU5 and HKU6). All three patients had infective endocarditis complicating their underlying chronic rheumatic heart diseases. Gene sequencing showed no base differences between the 16S rRNA gene sequences of HKU5 and HKU6 and that of HKU4. All three strains were Gram-positive, non-spore-forming cocci arranged in chains. All grew on sheep blood agar as α-haemolytic, grey colonies of 0.5–1 mm in diameter after 24 h incubation at 37 °C in ambient air. Lancefield grouping revealed that HKU5 and HKU6 were Lancefield group F, but HKU4 was non-groupable with Lancefield groups A, B, C, D, F or G antisera. HKU4 was identified by the Vitek system (GPI), API system (20 STREP) and ATB system (ID32 STREP) as 99 % , 51.3 % and 99.9 % , respectively. Using the same tests, HKU5 was identified as 87 % /, 59 % and 99.6 % , respectively, and HKU6 as 87 % /. , 77 % and 98.3 % , respectively. The present data revealed that a proportion of Lancefield group F streptococci could be . Lancefield group F streptococci should not be automatically reported as ‘'.

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2004-11-01
2019-11-13
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References

  1. Bert, F., Bariou-Lancelin, M. & Lambert-Zechovsky, N. ( 1998;). Clinical significance of bacteremia involving the ‘‘Streptococcus milleri’’ group: 51 cases and review. Clin Infect Dis 27, 385–387.[CrossRef]
    [Google Scholar]
  2. Brogan, O., Malone, J., Fox, C. & Whyte, A. S. ( 1997;). Lancefield grouping and smell of caramel for presumptive identification and assessment of pathogenicity in the Streptococcus milleri group. J Clin Pathol 50, 332–335.[CrossRef]
    [Google Scholar]
  3. Durack, D. T., Lukes, A. S. & Bright, D. K. ( 1994;). New criteria for diagnosis of infective endocarditis: utilization of specific echocardiographic findings.Duke Endocarditis Service. Am J Med 96, 200–209.[CrossRef]
    [Google Scholar]
  4. Facklam, R. ( 1977;). Physiological differentiation of viridans streptococci. J Clin Microbiol 5, 184–201.
    [Google Scholar]
  5. Facklam, R. ( 2002;). What happened to the streptococci: overview of taxonomic and nomenclature changes. Clin Microbiol Rev 15, 613–630.[CrossRef]
    [Google Scholar]
  6. Hurle, A., Nistal, J. F., Gutierrez, J. A., Rodriguez, M. A. & Revuelta, J. M. ( 1996;). Isolated apical intracavitary left ventricular abscess in a normal heart: a rare complication of Streptococcus milleri endocarditis. Cardiovasc Surg 4, 61–63.[CrossRef]
    [Google Scholar]
  7. Kawamura, Y., Hou, X. G., Sultana, F., Miura, H. & Ezaki, T. ( 1995;). Determination of 16S rRNA sequences of Streptococcus mitis and Streptococcus gordonii and phylogenetic relationships among members of the genus Streptococcus. Int J Syst Bacteriol 45, 406–408.[CrossRef]
    [Google Scholar]
  8. Lancefield, R. C. ( 1933;). A serological differentiation of human and other groups of hemolytic streptococci. J Exp Med 57, 571–595.[CrossRef]
    [Google Scholar]
  9. Levandowski, R. A. ( 1985;). Streptococcus milleri endocarditis complicated by myocardial abscess. South Med J 78, 892–893.[CrossRef]
    [Google Scholar]
  10. Murray, P. R., Baro, E. J., Jorgensen, J. H., Pfaller, M. A. & Yolken, R. H. (editors) ( 2003;). Manual of Clinical Microbiology, 8th edn. Washington, DC: American Society for Microbiology.
  11. Thompson, J. D., Higgins, D. G. & Gibson, T. J. ( 1994;). clustal w: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice. Nucleic Acids Res 22, 4673–4680.[CrossRef]
    [Google Scholar]
  12. Woo, P. C. Y., Fung, A. M. Y., Lau, S. K. P., Wong, S. S. Y. & Yuen, K. Y. ( 2001;). Group G beta-hemolytic streptococcal bacteremia characterized by 16S ribosomal RNA gene sequencing. J Clin Microbiol 39, 3147–3155.[CrossRef]
    [Google Scholar]
  13. Woo, P. C. Y., Tam, D. M. W., Leung, K. W., Lau, S. K. P., Teng, J. L. L., Wong, M. K. M. & Yuen, K. Y. ( 2002;). Streptococcus sinensis sp.nov., a novel Streptococcus species isolated from a patient with infective endocarditis. J Clin Microbiol 40, 805–810.[CrossRef]
    [Google Scholar]
  14. Woo, P. C. Y., Teng, J. L. L., Lau, S. K. P., Lum, P. N. L., Leung, K. W., Wong, K. L., Li, K. W., Lam, K. C. & Yuen, K. Y. ( 2003;). Analysis of a viridans group strain reveals a case of bacteremia due to Lancefield group G alpha-hemolytic Streptococcus dysgalactiae subsp.equisimilis in a patient with pyomyositis and reactive arthritis. J Clin Microbiol 41, 613–618.[CrossRef]
    [Google Scholar]
  15. Woo, P. C. Y., Tse, H., Chan, K. M. & 7 other authors ( 2004;). ‘‘Streptococcus milleri’’ endocarditis caused by Streptococcus anginosus. Diagn Microbiol Infect Dis 48, 81–88.[CrossRef]
    [Google Scholar]
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