What is Streptococcus bovis group?

4.2. 7 Streptococcus bovis. Streptococcus bovis is a non-enterococcal, group D streptococcus. High densities occur in feces of ruminants (Wheater et al., 1979) and other domestic animals including dogs, cats, horses and pigs (Clausen et al., 1977; Kenner et al., 1960).

Is Strep Bovis alpha hemolytic?

bovis group has traditionally been described as Gram-positive cocci in pairs and short chains that were cultured as small gamma- or alpha-hemolytic colonies and that were catalase negative, leucine aminopeptidase positive, pyrrolidonyl arylamidase negative, bile tolerant, esculin hydrolysis positive, salt intolerant.

What effect does Streptococcus bovis have on humans?

Abstract. Streptococcus bovis is a Gram-positive bacterium causing serious human infections, including endocarditis and bacteremia, and is usually associated with underlying disease.

Is Streptococcus bovis aerobic or anaerobic?

facultative anaerobic
Abstract. Streptococcus bovis is a large bacterial complex of facultative anaerobic Gram-positive cocci that includes distinct, genetically-related species.

How is Streptococcus bovis spread?

The main portal of entry for human infection of S. bovis bacteremia is the gastrointestinal tract, but in some cases, entry is through the urinary tract, the hepatobiliary tree, or the oropharynx.

What does alpha hemolytic mean?

Alpha hemolysis (α) is the reduction of the red blood cell hemoglobin to methemoglobin in the medium surrounding the colony. This causes a green or brown discoloration in the medium. The color can be equated with “bruising” the cells.

Is Streptococcus bovis coagulase positive or negative?

Classification. S. bovis is a catalase-negative and oxidase-negative, nonmotile, non-sporulating, Gram-positive lactic acid bacterium that grows as pairs or chains of cocci.

Is S. bovis motile?

Streptococcus bovis is a gram-positive bacterium that grows in pairs or chains of cocci and is a normal inhabitant of the gastrointestinal tract. It is both oxidase and catalase-negative and is a non-motile, non-sporulating, facultative anaerobe.

Where can Streptococcus bovis be found?

Streptococcus bovis (S. bovis) is a species of Gram-positive bacteria that in humans is associated with urinary tract infections, endocarditis, sepsis, and colorectal cancer. S. gallolyticus is commonly found in the alimentary tract of cattle, sheep, and other ruminants, and may cause ruminal acidosis or feedlot bloat.

Is Streptococcus bovis part of normal flora?

Streptococcus bovis (S. bovis) is part of the normal flora of the human alimentary tract. S. bovis bacteremia is often associated with colonic gastrointestinal neoplasia, because of the pathogen’s proinflammatory potential and procarcinogenic characteristic.