Streptococcus dysgalactiae

Mastitis, an inflammatory reaction of the mammary gland, usually resulting from a microbial infection, is a widespread disease seen in cattle throughout the world. The major bacterial species that are responsible for bovine mastitis are Staphylococcus aureus. Streptococcus dysgalactiae, Streptococcus agalactiae, Streptococcus uberis, and E. coli. Of these, the first three cause a contagious route of transmission, whereas Streptococcus uberis and... 

E. coli are considered to be environmental agents. While stringent disease control plans have eradicated Streptococcus dysgalactiae and Streptococcus agalactiae from many herds (Kerr and Wellnitz, 2003), controlling S. aureus has been difficult. 

A. Hamai, K. Morikawa, K. Hone, and K. Tokuyasu. Purification and characterization of hyaluronidase from Streptococcus dysgalactiae. Agric. Biol. Chem. 55 2163(1989). 

R. Sting, R. Schaufuss, and H. Blobel. Isolation and characterization of hyaluronidase from Streptococcus dysgalactiae, Streptococcus zooepidemicus and Streptococcus equi. Zentralbl. Bakt. 272 276 (1990). 

Miyoshi-Akiyama T, Zhao J, Kato H, Kikuchi K, Totsuka K, Kataoka Y, Katsumi M, Uchiyama T Streptococcus dysgalactiae-derived mitogen (SDM), a novel bacterial superantigen characterization of its biological activity and predicted tertiary structure. Mol Microbiol 2003 47 1589-1599. 

Fabrigli P, Odent-Malaure H, Courbil R, Garraud O. A near fatal septic transfusion reaction due to Streptococcus dysgalactiae subspecies equisimilis calls for novel safety measures. Vox Sang 2009 96(3) 271. 

Capric acid showed a low antibacterial effect against Staphylococcus aureus strains at a 10 mM concentration. A similar effect has been demonstrated against Streptococcus agalactiae, Streptococcus dysgalactiae and Streptococcus uheris strains, which were incubated, for 1 minute, in the milk supplemented with 100 mM caprylic acid (C8 0) (Nair et al., 2005b). 

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