Growth and Amino Acid Requirements of Various Strains of Group B Streptococci

@article{Milligan1978GrowthAA,
  title={Growth and Amino Acid Requirements of Various Strains of Group B Streptococci},
  author={T. Milligan and T. Doran and D. Straus and S. Mattingly},
  journal={Journal of Clinical Microbiology},
  year={1978},
  volume={7},
  pages={28 - 33}
}
A chemically defined medium (FMC; B. Terleckyj, N. P. Willett, and G. D. Shockman, Infect. Immun. 11:649-655, 1975) was used to compare the growth and amino acid requirements of 16 strains of group B streptococci, consisting of both laboratory-passaged organisms and fresh clinical isolates from adult and neonatal infections. The 5 standard Lancefield immunizing strains of group B streptococci, 090 (Ia), H36B (Ib), A909 (Ic), 18RS21 (II), and D136C (III), had doubling times in FMC (28 to 36 min… Expand
In vitro method to differentiate isolates of type III Streptococcus agalactiae from symptomatic and asymptomatic patients
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The results suggest that the ability to produce elevated levels of neuraminidase may be related to the frequent association of type III strains with disease among neonates. Expand
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Lactic acid is a potential virulence factor for group B Streptococcus.
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Correlation between the production of extracellular substances by type III group B streptococcal strains and virulence in a mouse model
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When levels of group B streptococci of each type were examined in organs of infected mice, comparable levels of organisms were found in the brain, spleen, and lungs of mice near death regardless of the initial inoculum, suggesting that these strains may be more invasive. Expand
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Despite extensive work on the group A streptococci (A. W. Bernheimer and A. M. Pappenheimer, Jr., J. Bacteriol. 43:481, 1942; H. D. Slade and W. C. Slamp, J. Exptl. Med. 102:291, 1955), very fewExpand
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The amino acid requirements of Streptococcus mutans strains AHT, OMZ-61, FA-1, BHT, GS-5, JC-2, Ingbritt, At6T, OMZ-176, 6715, Streptococcus salivarius HHT, Streptococcus sanguis OMZ-9, and strainExpand
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A chemically defined medium in which Streptococcus mutans strains AHT, BHT, GS-5, JC-2, Ingbritt, At6T, At9T, 6715, and OMZ-176 and StrePTococcus salivarius strain HHT grew rapidly to high turbidities was formulated and the growth rates of several of the strains tested were increased. Expand
Effects of nutritional characteristics of Streptococcus agalactiae on inhibition of growth by lactoperoxidase-thiocyanate-hydrogen peroxide in chemically defined culture medium
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Five cultures of Streptococcus agalactiae have an absolute requirement for L-cystine to grow in a chemically defined medium; hence, the growth requirement appears to be truly nutritional. Expand
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TLDR
Group B streptococcal neuraminidase was not active on human alpha-1 acid glycoprotein and did not show increased activity on bovine submaxillary mucin that had been O-deacetylated by alkaline treatment. Expand
Long-Chain Fatty Acid Inhibition of Growth of Streptococcus agalactiae in a Chemically Defined Medium
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The yield of purified type III polysaccharide of group B Streptococcus was significantly improved by modification of the growth medium and a thicker microcapsule was found in organisms grown in standard broth. Expand
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Sera from each of four adults with invasive infection who were studied during convalescence contained antibody to the capsular polysaccharide of type III group B Streptococcus, and antibody was absent from 10 infants who had recovered from bacteremia, septicemia, and/or meningitis due to type III Group B StrePTococcus. Expand
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Although race, ses, birth weight, and maternal obstetrical complications did not influence the prevalence of asymptomatic colonization with group B streptococci, low birth weight and prolonged rupture of membranes were significantly increased among neonates with proved infection of early onset type. Expand
Correlation of maternal antibody deficiency with susceptibility to neonatal group B streptococcal infection.
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It is suggested that transplacental transfer of maternal antibody protects infants from invasive Group B streptococcal infection with Type III strains. Expand
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