ENTEROBACTERERIACEAE Flashcards
This bacterial family consists of gram-negative, non-spore-forming, short rods.
Enterobacteriaceae
A bacterial family characterized by facultative anaerobes that ferment glucose with acid production.
Enterobacteriaceae
This antigenic structure is a capsular polysaccharide, particularly heavy in Klebsiella.
K antigen
A flagellar protein antigen found in motile members of Enterobacteriaceae.
H antigen
The antigenic structure corresponding to the O-specific polysaccharide chain of lipopolysaccharide.
O antigen
This genus of Enterobacteriaceae is a lactose fermenter and includes species such as E. coli.
Escherichia
This genus of Enterobacteriaceae does not ferment lactose and includes species like S. enterica.
Salmonella
A facultative anaerobic bacterium commonly found in the lower intestines of warm-blooded animals.
Escherichia coli
The scientist who first described Escherichia coli in 1885.
Theodore Escherich
A pathogenic strain of E. coli that produces lethal toxins and can cause foodborne illness.
E. coli O157:H7
The major route of transmission for E. coli infections.
Fecal-oral route
This fimbrial antigen of E. coli is best known for its adhesive function.
K88 (F4) antigen
A type of enterotoxin produced by E. coli that consists of two polypeptide subunits, A and B.
Heat-labile (LT) enterotoxin
A heat-stable enterotoxin of E. coli that affects guanylate cyclase activity in intestinal mucosal cells.
STa enterotoxin
A disease in piglets caused by enterotoxigenic E. coli, characterized by severe watery diarrhea.
Neonatal enteritis
A bacterial disease in poultry caused by E. coli, leading to septicemia and respiratory infections.
Avian colibacillosis
A chronic granulomatous disease in poultry caused by E. coli.
Hjarre’s disease
A major cause of urinary tract infections and pyometra in dogs.
Escherichia coli
The primary immune response against E. coli infections involves the production of these.
Antibodies against fimbrial antigens
This method is used to culture and isolate Enterobacteriaceae from clinical samples.
Blood agar
A diagnostic test used to detect E. coli antigens in clinical samples.
ELISA (Enzyme-Linked Immunosorbent Assay)
The primary virulence mechanism of enteropathogenic E. coli (EPEC).
Attachment and effacement of intestinal cells
A strain of E. coli that invades enterocytes and mimics shigellosis.
Enteroinvasive E. coli (EIEC)
The main bacterial cause of white scours in newborn calves.
Escherichia coli
This group of bacteria are known as ‘lactose fermenters’ within Enterobacteriaceae.
Citrobacter, Escherichia, Enterobacter, Klebsiella
This group of bacteria are known as ‘non-lactose fermenters’ within Enterobacteriaceae.
Shigella, Yersinia, Proteus, Salmonella
This structure is responsible for the motility of most Enterobacteriaceae.
Peritrichous flagella
This Enterobacteriaceae genus is associated with ‘swarming motility’ on culture media.
Proteus
This antigenic structure is found in the capsule of Salmonella and contributes to virulence.
Vi antigen
This zoonotic species of Enterobacteriaceae is associated with plague.
Yersinia pestis
This genus of Enterobacteriaceae is an opportunistic pathogen and a common cause of nosocomial infections.
Enterobacter
A type of toxin produced by Shiga toxin-producing E. coli (STEC), responsible for severe disease.
Shiga-like toxin
This term describes an E. coli strain that causes severe bloody diarrhea and hemolytic uremic syndrome.
Enterohemorrhagic E. coli (EHEC)
This term describes an E. coli strain that aggregates in the intestinal mucosa, causing chronic diarrhea.
Enteroaggregative E. coli (EAEC)
This E. coli strain type primarily affects newborn and weanling pigs, leading to dehydration and high mortality.
Enterotoxigenic E. coli (ETEC)
A type of diarrhea-causing E. coli that primarily affects human infants by rearranging actin in host cells.
Enteropathogenic E. coli (EPEC)
This disease in lambs caused by E. coli is characterized by sudden death and septicemia.
Colibacillosis
This life-threatening disease in foals is associated with E. coli infection and an inability to suckle.
Neonatal septicemia
A bacterial disease in rabbits caused by E. coli, leading to inflammation of the cecum.
Cecitis
This Enterobacteriaceae species is associated with mastitis in cattle.
Escherichia coli
This structure is used by E. coli to adhere to intestinal epithelial cells, promoting colonization.
Fimbriae
A virulence factor of E. coli that increases cyclic GMP levels, leading to diarrhea.
Heat-stable toxin (ST)
This Enterobacteriaceae species is commonly associated with pneumonia in humans and animals.
Klebsiella pneumoniae
This process allows some Enterobacteriaceae to convert nitrate (NO3) to nitrite (NO2) in anaerobic conditions.
Nitrate reduction
This bacteria, commonly found in contaminated food and water, causes bacillary dysentery in humans.
Shigella
This Enterobacteriaceae species is a significant cause of typhoid fever in humans.
Salmonella enterica serovar Typhi
This genus of Enterobacteriaceae is known for causing opportunistic infections in immunocompromised individuals.
Serratia
A bacterial species that produces red pigment and is associated with hospital-acquired infections.
Serratia marcescens
This Enterobacteriaceae species causes nosocomial infections and is resistant to many antibiotics.
Klebsiella pneumoniae
This term refers to an inflammatory response in poultry caused by E. coli, leading to peritonitis and organ infections.
Colisepticemia
This condition in piglets is caused by an E. coli toxin that leads to edema and neurological signs.
Edema disease
This term describes the characteristic wavy growth pattern of Proteus spp. on culture media.
Swarming motility
This bacterial genus includes species like P. mirabilis and P. vulgaris, known for urease production.
Proteus
This Enterobacteriaceae species is commonly used as a model organism in bacterial research.
Escherichia coli
This Enterobacteriaceae species can cause septicemia in fish and is an emerging aquatic pathogen.
Edwardsiella
This bacterial genus within Enterobacteriaceae is often associated with urinary tract infections.
Providencia
