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streptococcus
Streptococcus
Streptococcus (family Streptococcaceae) A genus of
Gram-positive, non-
motile bacteria in which the cells are spherical to ovoid, and often occur in pairs or chains. There are many species, found chiefly as
parasites and pathogens in warm-blooded animals, including humans. The genus includes the causal agents of tonsillitis and scarlet fever (
S. pyogenes), pneumonia (
S. pneumoniae), and dental caries (e.g.
S. mutans). Not all species are harmful; some are used in the manufacture of certain dairy products, e.g. yoghurt and butter. (These latter organisms are now regarded as belonging to a separate genus,
Lactocossus.)
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Bacteriocin ST91KM, produced by Streptococcus gallolyticus subsp. macedonicus ST91KM, is a narrow-spectrum peptide active against bacteria associated with mastitis in dairy cattle.(Clinical report)
Magazine article from: Canadian Journal of Microbiology; 7/1/2008; ; 700+ words
; ...bacteriocine presumee decrite chez Streptococcus gallolyticus subsp. macedonicus...bacteriocine ST91KM, Streptococcus gallolyticus subsp. macedonicus...Staphylococcus aureus; Streptococcus agalactiae; methicillin...negative staphylococci and streptococci (Khan et al. 2000; Loch...
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Interaction between oral alpha-streptococci and group A streptococci in patients with tonsillitis
Magazine article from: The Annals of Otology, Rhinology & Laryngology; 7/1/1997; ; 700+ words
; ...of interaction among oral streptococci isolated from patients with...absence of inhibitory a-streptococci in throat cultures may be...positive rapid test for group A streptococcus (Abbott Testpack plus Strep...culture positive for group A streptococci during the previous 2 months...
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Self-collection of group B Streptococcus cultures in pregnant women
Magazine article from: Military Medicine; 7/1/1999; ; 700+ words
; ...rectovaginal culture specimens for group B Streptococcus by pregnant patients. Methods: A...screen for the presence of group B Streptococcus. The patients' physicians collected...Twenty-four of 240 women grew group B Streptococcus on at least one culture (incidence...
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Effect of fluoride varnish on Streptococcus mutans counts in plaque of caries-free children using dentocult SM strip mutans test: A randomized controlled triple blind study.(Original Article)(Clinical report)
Magazine article from: Journal of Indian Society of Pedodontics and Preventive Dentistry; 10/1/2007; ; 700+ words
; ...dental caries. These microorganisms include mutans streptococci ( Streptococcus mutans , Streptococcus sobrinus ), Lactobacillus species, Actinomyces species, nonmutans streptococci and yeast.[sup] [4] The microbial traits...
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Bacterial Interference of Penicillin-Sensitive and -Resistant Streptococcus pneumoniae by Streptococcus oralis in an Adenoid Organ Culture: Implications for the Treatment of Recurrent Upper Respiratory Tract Infections in Children and Adults
Magazine article from: The Annals of Otology, Rhinology & Laryngology; 5/1/2006; ; 700+ words
; ...the viridans group of streptococci (Streptococcus oralis) in the prevention...particularly ahemolytic streptococci, may inhibit potential...945;-hemolytic streptococci (Streptococcus oralis) to inhibit growth...
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Rapid discrimination between strains of beta haemolytic streptococci by intact cell mass spectrometry
Magazine article from: Indian Journal of Medical Research; 6/1/2004; ; 700+ words
; ...amp; objectives: Beta haemolytic streptococci belonging to Lancefield group A, B...discrimination between strains of beta haemolytic streptococci. Methods: Colonies of beta haemolytic streptococci were emulsified with chemical matrix...
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Cross-Infection Between Cats and Cows: Origin and Control of Streptococcus canis Mastitis in a Dairy Herd
Magazine article from: Journal of Dairy Science; 8/1/2005; ; 700+ words
; ...ABSTRACT Group G streptococci in animals...the species Streptococcus canis and...group G streptococcus, LCT = lactating...INTRODUCTION Streptococci are a common...but other streptococci, specifically Streptococcus dysgalactiae...
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The effect of mango and neem extract on four organisms causing dental caries: Streptococcus mutans, Streptococcus salivavius, Streptococcus mitis, and Streptococcus sanguis: An in vitro study.(Original Research)
Magazine article from: Indian Journal of Dental Research; 10/1/2007; ; 700+ words
; ...conducted to evaluate the antimicrobial effects of these chewing sticks on the microorganisms Streptococcus mutans , Streptococcus salivarius , Streptococcus mitis , and Streptococcus sanguis which are involved in the development of dental caries...
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Group C and G streptococci infections: Emerging challenges
Magazine article from: Clinical Laboratory Science; 10/1/2003; ; 700+ words
; ...agar plate; GAS = group A streptococci; GCS = group C streptococci; GGS = group G streptococci; OIA = optical immunoassay. INDEX TERMS: streptococcus infections. Group A streptococci (GAS) are considered the primary pathogenic [beta...
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Enterococcus and group D streptococcus.(Tips from the clinical experts)
Magazine article from: Medical Laboratory Observer; 9/1/2003; ; 700+ words
; ...between Enterococcus and group D streptococcus? A Streptococci are gram-positive, catalase...enterococci were classified as group D streptococci. The nonenterococcal group D streptococci included Streptococcus bovis, Streptorocrus equinus...
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streptococcus
Book article from: The Columbia Encyclopedia, Sixth Edition
streptococcus , any of a group...bacteria, genus Streptococcus, some of which cause disease. Streptococci are spherical...group B hemolytic streptococci can cause serious...a part of the Streptococcus genus but are...
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Streptococci and Streptococcal Infections
Book article from: World of Microbiology and Immunology
Streptococci and streptococcal infections Streptococci are spherical, Gram positive bacteria . Commonly they are referred to as strep bacteria. Streptococci are normal residents on the skin and mucous surfaces...
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Streptococcus
Book article from: A Dictionary of Nursing
Streptococcus (strep-toh- kok -ŭs) n. a genus of Gram-positive...Most species are saprophytes, but some are pathogenic. Haemolytic streptococci destroy red blood cells in blood agar and are the cause of many infections...
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Streptococcal Antibody Tests
Book article from: World of Microbiology and Immunology
...from the genus Streptococcus are capable of...causing strains of streptococci . These strains...The presence of streptococci can be detected...with the group A Streptococcus has precluded...and more of the streptococci are killed. The...beta-hemolytic Streptococcus. This test is...
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Streptococcal Infections
Encyclopedia entry from: Complete Human Diseases and Conditions
...Alpha-Hemolytic Streptococcus Infections Resources...various strains* of Streptococcus (strep-tuh-KAH...Alpha-hemolytic streptococci Beta-hemolytic streptococci...is used to classify streptococcus strains. The ones...G. Groups A and B streptococci are most often associated...
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