Literature DB >> 12574305

Novel observation of hot-cold-hot hemolysis exhibited by group B streptococci.

Norio Okazaki1, Ro Osawa, Rieko Suzuki, Takayasu Nikkawa, Robert A Whiley.   

Abstract

Six human isolates of group B streptococci (GBS) were cultured on blood agar anaerobically at 37 degrees C for 18 h and then at 4 degrees C for 6 h and reincubated anaerobically at 37 degrees C for 6 h. Three of the strains showed a marked enlargement of the hemolysis zone compared with that obtained after hot-only (37 degrees C for 18 h) or hot-cold (37 degrees C for 18 h and then 4 degrees C for 6 h) treatment. Subsequent broth culture experiments revealed that enhanced hemolytic activity due to hot-cold-hot treatment was observed in all 6 GBS strains when cultured in the presence of starch.

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Year:  2003        PMID： 12574305      PMCID： PMC149725          DOI： 10.1128/JCM.41.2.877-879.2003

Source DB:  PubMed          Journal:  J Clin Microbiol        ISSN： 0095-1137            Impact factor:   5.948


  19 in total

1.  Copurification of Leptospira interrogans serovar pomona hemolysin and sphingomyelinase C.

Authors:  A W Bernheimer; R F Bey
Journal:  Infect Immun       Date:  1986-10       Impact factor: 3.441

2.  Phenomenon of hot-cold hemolysis: chelator-induced lysis of sphingomyelinase-treated erythrocytes.

Authors:  C J Smyth; R Möllby; T Wadström
Journal:  Infect Immun       Date:  1975-11       Impact factor: 3.441

Review 3.  Bacterial phospholipases C.

Authors:  R W Titball
Journal:  Microbiol Rev       Date:  1993-06

4.  Group B streptococcal beta-hemolysin promotes injury of lung microvascular endothelial cells.

Authors:  R L Gibson; V Nizet; C E Rubens
Journal:  Pediatr Res       Date:  1999-05       Impact factor: 3.756

5.  Molecular analysis of two group B streptococcal virulence factors.

Authors:  C E Rubens; M R Wessels; J M Kuypers; D L Kasper; J N Weiser
Journal:  Semin Perinatol       Date:  1990-08       Impact factor: 3.300

6.  The role of group B streptococci beta-hemolysin expression in newborn lung injury.

Authors:  V Nizet; R L Gibson; C E Rubens
Journal:  Adv Exp Med Biol       Date:  1997       Impact factor: 2.622

7.  Group B streptococcal disease in the United States, 1990: report from a multistate active surveillance system.

Authors:  K M Zangwill; A Schuchat; J D Wenger
Journal:  MMWR CDC Surveill Summ       Date:  1992-11-20

8.  In vivo hemolytic activity of group B streptococcus is dependent on erythrocyte-bacteria contact and independent of a carrier molecule.

Authors:  M W Platt
Journal:  Curr Microbiol       Date:  1995-07       Impact factor: 2.188

9.  Early-onset group B streptococcal sepsis: a current assessment.

Authors:  L E Weisman; B J Stoll; D F Cruess; R T Hall; G B Merenstein; V G Hemming; G W Fischer
Journal:  J Pediatr       Date:  1992-09       Impact factor: 4.406

10.  A SEROLOGICAL DIFFERENTIATION OF SPECIFIC TYPES OF BOVINE HEMOLYTIC STREPTOCOCCI (GROUP B).

Authors:  R C Lancefield
Journal:  J Exp Med       Date:  1934-03-31       Impact factor: 14.307
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