Canadian Medical Guide > Organisms > Bacteria > Gram-Negative Bacteria > Gram-Negative Facultatively Anaerobic Rods > Enterobacteriaceae Terms and Definitions




Enterobacteriaceae

Medical Definition: A family of gram-negative, facultatively anaerobic, rod-shaped bacteria that do not form endospores. Its organisms are distributed worldwide with some being saprophytes and others being plant and animal parasites. Many species are of considerable economic importance due to their pathogenic effects on agriculture and livestock.
Guide Notes: infection = ENTEROBACTERIACEAE INFECTIONS
Also Called: Paracolobactrum
Enterobacteriaceae Categories.
Canadian Medical Guide Definition Calymmatobacterium - A genus of bacteria causing GRANULOMA INGUINALE and other granulomatous lesions.
Canadian Medical Guide Definition Citrobacter - A genus of gram-negative, rod-shaped enterobacteria that can use citrate as the sole source of carbon.
Canadian Medical Guide Definition Edwardsiella - A genus of small, straight gram-negative rods which are facultatively anaerobic, chemoorganotrophic, and usually motile by peritrichous flagella. Members of this genus are usually found in the intestines of cold-blooded animals and in fresh water. They are pathogenic for eels, CATFISHES, and other animals and are rare opportunistic pathogens for humans. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Enterobacter - Gram-negative gas-producing rods found in feces of man and other animals, sewage, soil, water, and dairy products.
Canadian Medical Guide Definition Erwinia - A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria whose organisms are associated with plants as pathogens, saprophytes, or as constituents of the epiphytic flora.
Canadian Medical Guide Definition Escherichia - A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria whose organisms occur in the lower part of the intestine of warm-blooded animals. The species are either nonpathogenic or opportunistic pathogens.
Canadian Medical Guide Definition Hafnia - A genus of straight, gram-negative bacterial rods which are facultatively anaerobic and motile by peritrichous flagella. This genus is found in human and animal feces, soil, water, and dairy products. It is an opportunistic pathogen in humans. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Klebsiella - A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria whose organisms arrange singly, in pairs, or short chains. This genus is commonly found in the intestinal tract and is an opportunistic pathogen that can give rise to bacteremia, pneumonia, urinary tract and several other types of human infection.
Canadian Medical Guide Definition Kluyvera - A genus of gram-negative, facultatively anaerobic bacteria in the family ENTEROBACTERIACEAE. It is found in FOOD; SOIL; and SEWAGE; and is an opportunistic pathogen of humans.
Canadian Medical Guide Definition Morganella - A genus of gram-negative, facultatively anaerobic, straight rods which are motile by peritrichous flagella. These organisms are chemoorganotrophic and have both a respiratory and fermentative type of metabolism. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Pantoea - A genus of gram-negative, facultatively anaerobic, straight rods which are motile by peritrichous flagella. Most strains produce a yellow pigment. This organism is isolated from plant surfaces, seeds, soil, and water, as well as from animals and human wounds, blood, and urine. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Pectobacterium - A genus of gram-negative bacteria in the family ENTEROBACTERIACEAE consisting of species that profusely produce pectinolytic enzymes in plant pathogenesis.
Canadian Medical Guide Definition Photorhabdus - A genus of gram-negative bacteria existing symbiotically with nematodes of the family Heterorhabditidae (see RHABDITOIDEA). These nematodes infect a variety of soil-dwelling insects. Upon entering an insect host, the nematode releases Photorhabdus from its intestinal tract and the bacterium establishes a lethal septicemia in the insect.
Canadian Medical Guide Definition Plesiomonas - A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that occurs in fish and other aquatic animals and in a variety of mammals, including man. Its organisms probably do not belong to the normal intestinal flora of man and can cause diarrhea.
Canadian Medical Guide Definition Proteus - A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that occurs in the intestines of humans and a wide variety of animals, as well as in manure, soil, and polluted waters. Its species are pathogenic, causing urinary tract infections and are also considered secondary invaders, causing septic lesions at other sites of the body.
Canadian Medical Guide Definition Providencia - Gram-negative rods isolated from human urine and feces.
Canadian Medical Guide Definition Salmonella - A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that utilizes citrate as a sole carbon source. It is pathogenic for humans, causing enteric fevers, gastroenteritis, and bacteremia. Food poisoning is the most common clinical manifestation. Organisms within this genus are separated on the basis of antigenic characteristics, sugar fermentation patterns, and bacteriophage susceptibility.
Canadian Medical Guide Definition Serratia - A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that occurs in the natural environment (soil, water, and plant surfaces) or as an opportunistic human pathogen.
Canadian Medical Guide Definition Shigella - A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that ferments sugar without gas production. Its organisms are intestinal pathogens of man and other primates and cause bacillary dysentery (DYSENTERY, BACILLARY).
Canadian Medical Guide Definition Wigglesworthia - A genus of gram-negative, rod-shaped bacteria in the family ENTEROBACTERIACEAE. They exist only as primary endosymbionts of five species of TSETSE FLIES, found in specialized organelles called mycetomes. The bacteria supply crucial B vitamins (VITAMIN B COMPLEX) which the flies require for fertility.
Canadian Medical Guide Definition Xenorhabdus - A genus of gram-negative, facultatively anaerobic rod-shaped cells which are motile by peritrichous flagella. Late in the growth cycle, spheroplasts or coccoid bodies occur, resulting from disintegration of the cell wall. The natural habitat is the intestinal lumen of certain nematodes. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Yersinia - A genus of gram-negative, facultatively anaerobic rod- to coccobacillus-shaped bacteria that occurs in a broad spectrum of habitats.

Enterobacteriaceae Medical Definitions and Terms

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