Serratia: Difference between revisions
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''S. grimesii''<br> | ''S. grimesii''<br> | ||
''S. liquefaciens''<br> | ''S. liquefaciens''<br> | ||
'' | ''S. marcescens''<br> | ||
''S. odoriferae''<br> | ''S. odoriferae''<br> | ||
''S. plymuthica''<br> | ''S. plymuthica''<br> | ||
'' | ''S. proteamaculans''<br> | ||
''S. quinivorans''<br> | ''S. quinivorans''<br> | ||
''S. rubidaea''<br> | ''S. rubidaea''<br> | ||
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'''''Serratia''''' is a ubiquitous organism that is frequently present in food, soil, and damp conditions. | '''''Serratia''''' is a ubiquitous organism that is frequently present in food, soil, and damp conditions. | ||
*''Serratia'' is a lactose-forming, [[Gram-negative]], [[Facultative anaerobic organism|facultatively anaerobic]], [[bacillus|rod-shaped]] [[bacteria]] of the [[Enterobacteriaceae]] family. | *''Serratia'' is a lactose-forming, [[Gram-negative]], [[Facultative anaerobic organism|facultatively anaerobic]], [[bacillus|rod-shaped]] [[bacteria]] of the [[Enterobacteriaceae]] family. | ||
*Out of a total of 12 ''Serratia'' species (see ''Scientific Classification Table''), 8 have been reported to be infectious in humans. To view list of infectiuous ''Serratia'' species, click [[Serratia classification|'''here''']]. | |||
*Clinically, ''Serratia'' may infect multiple organ systems. It may be responsible for urinary tract infection, pneumonia , osteomyelitis, meningitis, endocarditis, intra-abdominal infections, and eye and tear duct infections (conjunctivitis, keratitis, endophthalmitis). | *Clinically, ''Serratia'' may infect multiple organ systems. It may be responsible for urinary tract infection, pneumonia , osteomyelitis, meningitis, endocarditis, intra-abdominal infections, and eye and tear duct infections (conjunctivitis, keratitis, endophthalmitis). | ||
''Serratia'' is notoriously known for its antimicrobial resistance due to the presence of R-factor, a virulence factor. | ''Serratia'' is notoriously known for its antimicrobial resistance due to the presence of R-factor, a virulence factor. |
Revision as of 16:42, 11 January 2016
Serratia infection Microchapters |
Diagnosis |
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Treatment |
Case Studies |
Serratia On the Web |
American Roentgen Ray Society Images of Serratia |
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Scientific classification | ||||||||||||
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S. entomophila |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Serratia is a ubiquitous organism that is frequently present in food, soil, and damp conditions.
- Serratia is a lactose-forming, Gram-negative, facultatively anaerobic, rod-shaped bacteria of the Enterobacteriaceae family.
- Out of a total of 12 Serratia species (see Scientific Classification Table), 8 have been reported to be infectious in humans. To view list of infectiuous Serratia species, click here.
- Clinically, Serratia may infect multiple organ systems. It may be responsible for urinary tract infection, pneumonia , osteomyelitis, meningitis, endocarditis, intra-abdominal infections, and eye and tear duct infections (conjunctivitis, keratitis, endophthalmitis).
Serratia is notoriously known for its antimicrobial resistance due to the presence of R-factor, a virulence factor.
Serratia marcescens
- S. marcescens is a motile, Gram-negative, facultatively anaerobic rod-shaped bacteria that can grow in temperatures ranging from 5–40°C and in pH levels ranging from 5 to 9.
- S. marcescens is able to perform casein hydrolysis, which facilitates the production of extracellular metalloproteases thought to function in cell-to-extracellular matrix interactions.
- S. marcescens also exhibits tryptophan- and citrate-degradation. Pyruvic acid, an end-product of tryptophan degradation, and carbon, an end-product of citrate degradation, are then incorporated into metabolic processes.
- S. marcescens produces a reddish-orange (bloody) pigment called prodigiosin.
- Identification of the organism may be done via the methyl red test, which determines if a microorganism performs mixed-acid fermentation. Typically, S. marcescens results in a negative test.
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Blood agar base plate cultivated colonial growth of Gram-negative, rod-shaped and facultatively anaerobic Serratia marcescens bacteria. From Public Health Image Library (PHIL). [1]