Phage typing of Staphylococcus intermedius. 1991

G D Overturf, and D A Talan, and K Singer, and N Anderson, and J I Miller, and R T Greene, and S Froman
Department of Pathology, University of California, Los Angeles.

Staphylococcus intermedius, a coagulase-positive staphylococcal species, is a common canine pathogen and a rare human wound pathogen. A total of 145 strains of S. intermedius (ATCC 29663, 4 reference strains, 4 human isolates, 44 canine infection isolates, and 92 isolates from canine gingiva) were screened for lysogenic phage by a modified Fisk method. Nineteen phage preparations were prepared for preliminary typing experiments. Lytic activity was observed on 93 of 145 (64.1%) isolates, yielding 44 lytic patterns with individual strains susceptible to one or more phages. Five phages lysed only a single strain, but lytic patterns varied from 1 to 11 lytic phages per isolate. A distinct lytic pattern did not separate canine or human wound isolates from canine gingival isolates. All human wound isolates fell into the two most common canine gingival or wound patterns; the single human nasopharyngeal isolate was not lysed by any phage. Twenty-two of 44 (55%) canine wound isolates and 65 of 92 (71%) gingival isolates yielded lytic patterns. Lysogenic phages are common in S. intermedius. This preliminary study suggests that phage typing may be a useful tool in distinguishing epidemiologically related strains.

UI MeSH Term Description Entries
D008242 Lysogeny The phenomenon by which a temperate phage incorporates itself into the DNA of a bacterial host, establishing a kind of symbiotic relation between PROPHAGE and bacterium which results in the perpetuation of the prophage in all the descendants of the bacterium. Upon induction (VIRUS ACTIVATION) by various agents, such as ultraviolet radiation, the phage is released, which then becomes virulent and lyses the bacterium. Integration, Prophage,Prophage Integration,Integrations, Prophage,Prophage Integrations
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D005881 Gingiva Oral tissue surrounding and attached to TEETH. Gums,Interdental Papilla,Papilla, Interdental,Gum
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001435 Bacteriophages Viruses whose hosts are bacterial cells. Phages,Bacteriophage,Phage
D013203 Staphylococcal Infections Infections with bacteria of the genus STAPHYLOCOCCUS. Infections, Staphylococcal,Staphylococcus aureus Infection,Staphylococcal Infection,Staphylococcus aureus Infections
D013210 Staphylococcus A genus of gram-positive, facultatively anaerobic, coccoid bacteria. Its organisms occur singly, in pairs, and in tetrads and characteristically divide in more than one plane to form irregular clusters. Natural populations of Staphylococcus are found on the skin and mucous membranes of warm-blooded animals. Some species are opportunistic pathogens of humans and animals.
D014946 Wound Infection Invasion of a wound by pathogenic microorganisms. Infection, Wound,Infections, Wound,Wound Infections
D015373 Bacterial Typing Techniques Procedures for identifying types and strains of bacteria. The most frequently employed typing systems are BACTERIOPHAGE TYPING and SEROTYPING as well as bacteriocin typing and biotyping. Bacteriocin Typing,Biotyping, Bacterial,Typing, Bacterial,Bacterial Biotyping,Bacterial Typing,Bacterial Typing Technic,Bacterial Typing Technics,Bacterial Typing Technique,Technic, Bacterial Typing,Technics, Bacterial Typing,Technique, Bacterial Typing,Techniques, Bacterial Typing,Typing Technic, Bacterial,Typing Technics, Bacterial,Typing Technique, Bacterial,Typing Techniques, Bacterial,Typing, Bacteriocin

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