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Study sets matching "term:the colon = e. coli"

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Study sets matching "term:the colon = e. coli"

10 terms
E coli
ETEC symptoms
ETEC treatment
EPEC symptoms
EPEC
mild, self-limiting disease with watery diarrhea but usually…
oral re-hydration and possibly antibiotics
acute watery diarrhea and often vomiting and low-grade fever
oral or parenteral rehydration depending on severity; antibio…
ETEC symptoms
mild, self-limiting disease with watery diarrhea but usually…
ETEC treatment
oral re-hydration and possibly antibiotics
E Coli
Name
Structure
Habitat
Pathogenic Variety
Escherichia coli
Rod Shaped... Gram Negitive... Bacteria
Warm blooded animals lower intestines
E. coli O157:H7
Name
Escherichia coli
Structure
Rod Shaped... Gram Negitive... Bacteria
14 terms
E. coli
ETEC
ETEC - transmission
ETEC - disease caused
EPEC
Enterotoxigenic
fecal-oral
watery diarrhea
Enteropathogenic
ETEC
Enterotoxigenic
ETEC - transmission
fecal-oral
28 terms
E. Coli
Enterotoxigenic E. coli
adenylcylase (makes cAMP)
Cl; Na
adhesion
E. coli that are not invasive, but produce toxins
heat labile enterotoxigenic E. coli stimulates ______________…
cAMP induces excretion of ________ and prevents absorption of…
Pilus antigens mediate ______________
Enterotoxigenic E. coli
E. coli that are not invasive, but produce toxins
adenylcylase (makes cAMP)
heat labile enterotoxigenic E. coli stimulates ______________…
9 terms
E Coli
enterohemorrhagic - STEC - ... 1. sources…
STEC - virulence determinants, pathoge…
DIARRHEAGENIC E COLI - TYPES?
EPEC
main serogroup is O157:h7... 1. food - undercooked; petting zoos…
1. pili mediate attachment (weak)... 2. T3SS induces formation o…
enteropathogenic - epec... enteroaggregative - eaec... enteroinvasi…
- person to person... - leading cause of childhood diarrhea in d…
enterohemorrhagic - STEC - ... 1. sources…
main serogroup is O157:h7... 1. food - undercooked; petting zoos…
STEC - virulence determinants, pathoge…
1. pili mediate attachment (weak)... 2. T3SS induces formation o…
22 terms
E. coli
E.coli
E. coli commensal properties
Shiga toxic E. coli
Diarrheigenic producing E. coli
enteric gram negative rod. some strains are part of normal gu…
make vitamin K, protect against other pathogens
E.coli strain protuding shiga toxin.
non-Shiga toxin producing strain
E.coli
enteric gram negative rod. some strains are part of normal gu…
E. coli commensal properties
make vitamin K, protect against other pathogens
30 terms
E.coli
Enteroinvasive E. coli (EIEC) ... -how do…
EPEC (Enteropathogenic E. coli)... -what…
Enterotoxigenic (or enterotoxic) E. co…
Enterohaemorrhagic E. coli (EHEC)... -cli…
capable of invading the intestinal cells of humans... and produc…
- infant diarrhoea associated with vomiting and nausea.... -char…
-produce osmotic diarrhoea resembling cholera but... milder in s…
-EHEC can cause an haemorrhagic colitis characterized by bloo…
Enteroinvasive E. coli (EIEC) ... -how do…
capable of invading the intestinal cells of humans... and produc…
EPEC (Enteropathogenic E. coli)... -what…
- infant diarrhoea associated with vomiting and nausea.... -char…
E. Coli
Escherichia coli
enterbacteriaceae
100 billion to 10 trillion
coliform group
one of the main species of bacteria that live in the lower in…
family that E coli belongs to
how many number of individual E coli bacterial that one human…
aerobic and facultative anaerobic, non-spore-forming, gram ne…
Escherichia coli
one of the main species of bacteria that live in the lower in…
enterbacteriaceae
family that E coli belongs to
23 terms
E. coli
enterotoxigenic E. coli (ETEC)
enterotoxigenic E. coli (ETEC)
enterotoxigenic E. coli (ETEC)
enterotoxigenic E. coli (ETEC)
common cause of travelers diarrhea and diarrhea in infants
secrete one or more enterotoxin
causes nausea, vomiting, abdominal cramps, massive watery dia…
high infectious dose
enterotoxigenic E. coli (ETEC)
common cause of travelers diarrhea and diarrhea in infants
enterotoxigenic E. coli (ETEC)
secrete one or more enterotoxin
10 terms
E. coli
E. coli is
Function of E. coli
E. coli 0157:H7
Nature of disease
Gram negative... Bacilli (rods)... Enterobacteriaceae ... Part of norm…
Suppress harmful bacterial species ... Synthesizes vitamins
Produces potent toxins that damage lining of intestines ... Vero…
Hemorrhagic colitis ... Severe cramping... Diarrhea >Watery and the…
E. coli is
Gram negative... Bacilli (rods)... Enterobacteriaceae ... Part of norm…
Function of E. coli
Suppress harmful bacterial species ... Synthesizes vitamins
54 terms
E. coli
serotype O E coli is based on
serotype H E coli is based on
serotype K E coli is based on
virotypes/pathovar E coli types are ba…
LPS
flagellum/haunch
capsule
virulence factors of each E coli species
serotype O E coli is based on
LPS
serotype H E coli is based on
flagellum/haunch
26 terms
E coli
E. coli General Properties
E. coli Diseases
Endotoxin
Exotoxin
-bacillus... -hardy, grows well in sample media... -facultative ana…
-Intestinal infections: most common... -UTI: 80% community acqui…
-cell associated substances that are structural components of…
-proteinaceous toxins excreted... -made by pathogenic strains... -S…
E. coli General Properties
-bacillus... -hardy, grows well in sample media... -facultative ana…
E. coli Diseases
-Intestinal infections: most common... -UTI: 80% community acqui…
10 terms
E. coli
Pore-forming toxin
Cytotoxin Necrotizing factor
Shiga toxin
Heat Labile toxin (LT)
destroys plasma membrane
causes cell death via disruption of cell signaling (AB toxin)
modifies the host ribosomal RNA to prevent protein synthesis…
sensitive to heat, disrupts NaCl absorption and secretion (AB…
Pore-forming toxin
destroys plasma membrane
Cytotoxin Necrotizing factor
causes cell death via disruption of cell signaling (AB toxin)
23 terms
E. coli
e coli gram shape environment
e coli virulence factors
H-antigen
K-antigen
- rod... feces, soil water... commensal
flagella... adhesins (fimbriae, pili)... capsule... LPS... sideorophores…
flagella
Capsule
e coli gram shape environment
- rod... feces, soil water... commensal
e coli virulence factors
flagella... adhesins (fimbriae, pili)... capsule... LPS... sideorophores…
10 terms
E coli
Escherichia coli
Características
Patogenia e inmunidad
Epidemiologia
=)
Enfermedades:... •gastroenteritis... •infecciones extraintestinale…
Tienen los mismos factores de virulencia que todas las entero…
•en tubo digestivo hay muchas... •pueden comportarse como oportu…
Escherichia coli
=)
Características
Enfermedades:... •gastroenteritis... •infecciones extraintestinale…
14 terms
E. coli
shape and stain of E. coli
diseases of E. coli
E. coli virulence factors
enteropathogenic E. coli
hardy gram negative bacillus
diarrhea, HUS, UTI, neonatal meningitis, sepsis
virulence factors include: endotoxin (lipid A of LPS), exotox…
Bundle-forming pili, attaching and effacing, type III secreti…
shape and stain of E. coli
hardy gram negative bacillus
diseases of E. coli
diarrhea, HUS, UTI, neonatal meningitis, sepsis
10 terms
E. coli
Advantages
Inclusion bodies
Codon bias
fusion proteins
fast, easy and cheap to grow... genetically amenable... well-unders…
protein production overwhelms folding machinery... forms insolub…
although the genetic code is conserved across all of life the…
can improve protein stability, increase expression rates, be…
Advantages
fast, easy and cheap to grow... genetically amenable... well-unders…
Inclusion bodies
protein production overwhelms folding machinery... forms insolub…
55 terms
E.coli
E. coli O157
Escherichia strains possess specialize…
most E. coli that cause gastrointestin…
Most infections ;
is the most common cause of hemorrhagic colitis and hemolytic…
adhesins and exotoxins.
they have acquired specific virulence factors encoded on plas…
are endogenous
E. coli O157
is the most common cause of hemorrhagic colitis and hemolytic…
Escherichia strains possess specialize…
adhesins and exotoxins.
52 terms
E. Coli
E coli, salmonella, yersinia
proteus, klebsiella, enterobacter
gram negative
rods
major enterobacteriaceae pathogens
major enterobacteriaceae opportunistic pathogens
stain of E coli
morphology of E coli
E coli, salmonella, yersinia
major enterobacteriaceae pathogens
proteus, klebsiella, enterobacter
major enterobacteriaceae opportunistic pathogens
9 terms
E. Coli
Pili
Nucleoid
Ribosome
Flagella
Transports genetic information
Region where genetic information is
Location of protein synthesis
Allow for cell movement
Pili
Transports genetic information
Nucleoid
Region where genetic information is
32 terms
E. Coli
Normal Flora E. Coli
What type of anaerobes are found mostl…
Opportunistic/ ednogenous E Coli infec…
UTI isolates express several specific…
-E. coli is the most abundant facultative anaerobe in the nor…
A: strict obligate anaerobes... They outnumber the facultative a…
=opportunistic pathogens... -causes disease only when the body's…
-P pili (P blood group ags), allow it to grab hold of cell su…
Normal Flora E. Coli
-E. coli is the most abundant facultative anaerobe in the nor…
What type of anaerobes are found mostl…
A: strict obligate anaerobes... They outnumber the facultative a…
32 terms
E. coli
E coli diseases
Type III secretion system
E coli O157: H7 does not ferment ___
Sorbital medium
GI... UTI... Meningitis... Bacteremia... Wound
Bacteria connects to host cell using this system makes a hole…
sorbitol
Sorbitol medium if the organism has red colonies it is fermen…
E coli diseases
GI... UTI... Meningitis... Bacteremia... Wound
Type III secretion system
Bacteria connects to host cell using this system makes a hole…
24 terms
E Coli
E coli
Pathogenic E coli
Diseases
HUS
Gram negative rod, hardy and facultative anaerobe. That is pa…
EPEC, EHEC, ETEC, EIEC, EAEC (all enteris). then meningitis-c…
Diarrhea - food or water borne - watery or bloody (dysentery)…
Hemolytic anemia, thrombocytopenia and acute renal failure. 5…
E coli
Gram negative rod, hardy and facultative anaerobe. That is pa…
Pathogenic E coli
EPEC, EHEC, ETEC, EIEC, EAEC (all enteris). then meningitis-c…
16 terms
E. Coli
Toxin: LT/ST
Shiga/Vero Toxins
Similar to non-pathogenic E.Coli
Traveler's Diarrhea
ETEC
E.Coli O157:H7
EPEC
ETEC
Toxin: LT/ST
ETEC
Shiga/Vero Toxins
E.Coli O157:H7
16 terms
E. Coli
E.coli (location)
Enterobacteriaceae
Traits of all Enterobactereaceae
Enterobacteriaceae Antigens
Present in GI tract... Coliform counts from environmental sampl…
Gram-negative rods found primarily in colon... Major facultativ…
1) Facultative anaerobes... 2) Ferment glucose... 3) Cytochrome oxi…
1) O antigen... 2) H antigen... 3) K antigen
E.coli (location)
Present in GI tract... Coliform counts from environmental sampl…
Enterobacteriaceae
Gram-negative rods found primarily in colon... Major facultativ…
14 terms
E. coli
10 degrees
30 degrees
37 degrees
55 degrees
0
+++
++
0
10 degrees
0
30 degrees
+++
10 terms
E. Coli
Full name
Number
Carriers
Causes
Escherichia coli
O157:H7
Cows
Hemorrhagic fever... Bloody diarrhea
Full name
Escherichia coli
Number
O157:H7
16 terms
E.coli
e. coli urethritis
e.coli cystitis
e.coli pyelonephritis
e.coli prostatitis
bloody urine... painful urination/ejaculation... vaginal discharge
cloudy/bloody urine... abdominal pain... fever
vomiting... abdominal pain... fever
urinary dysfunction... fever and chills!
e. coli urethritis
bloody urine... painful urination/ejaculation... vaginal discharge
e.coli cystitis
cloudy/bloody urine... abdominal pain... fever
27 terms
E.COLI
Transmission of ECOLI
Escherichia coli info
Reservoir
Serotypes
Fecal: Oral... Food: Meat, salads, cross contamination... Water: Dr…
G (-)rod... 4.64 MBP
Harmless gut... Colon bacteria... Humans and animals... Contaminated o…
The set of antigens that characterizes the group
Transmission of ECOLI
Fecal: Oral... Food: Meat, salads, cross contamination... Water: Dr…
Escherichia coli info
G (-)rod... 4.64 MBP
28 terms
E. coli
Theodor Escheric
Non-pathogenic
Enteropathogenic
Enterotoxigenic
discovered E. coli
Biotype 1
EPEC
ETEC
Theodor Escheric
discovered E. coli
Non-pathogenic
Biotype 1
100 terms
E. Coli
What type of bacteria are Enterobacter…
What are two metabolic characteristics…
Two locations of Enterobacteriaceae
What 4 types of clinical diseases does…
Ubiquitous, gram negative bacilli
They ferment glucose... Oxidase negative
In the environment... Normal intestinal flora in humans and ani…
Sepsis... Urinary tract infection... Gastrointestinal tract infec…
What type of bacteria are Enterobacter…
Ubiquitous, gram negative bacilli
What are two metabolic characteristics…
They ferment glucose... Oxidase negative
45 terms
E Coli
2 Categories of E coli
4 Types of diarrheagenic E coli discus…
What is the only E coli to fall into t…
T/F) STEC is a diarrheagenic E coli
Enterohemmorrhagic ... Diarrheagenic
EPEC - EnteroPathogenic... ETEC - EnteroToxigenic... EAEC - EnteroA…
STEC - ShigellaToxin E Coli
F. ... ST - shigella toxin E coli is the only enterohemmorrhagi…
2 Categories of E coli
Enterohemmorrhagic ... Diarrheagenic
4 Types of diarrheagenic E coli discus…
EPEC - EnteroPathogenic... ETEC - EnteroToxigenic... EAEC - EnteroA…
34 terms
E. coli
yellow colonies on ___ agar indicate l…
CLED agar is used to detect ___ produc…
E. coli is motile/immotile
What are the 3 parts of the LPS?
CLED
lactose
motile
inner core, lipid A, out variable polysaccharide (O antigen)
yellow colonies on ___ agar indicate l…
CLED
CLED agar is used to detect ___ produc…
lactose
25 terms
E.coli
negative gram stain non sporing rod
can cross BBB
Recognized classes of pathogenic E. co…
Mechanism for Enterotoxigenic E. coli…
true
true
1.virulence properties, ... 2.mechanisms of pathogenicity ... 3.and…
sits on cell surface and entry into intestine and causes diar…
negative gram stain non sporing rod
true
can cross BBB
true
12 terms
E coli
Where is E coli normally found and how…
What is the main serotype of EHEC
What is the source of EHEC
How high is the infectious dose of EHEC
Gut microflora and it makes vit K and protects against other…
O157:H7
Food (undercooked, contaminated beef or leafy veg, raw milk),…
Low
Where is E coli normally found and how…
Gut microflora and it makes vit K and protects against other…
What is the main serotype of EHEC
O157:H7
37 terms
E. coli
Scientific classification... Kindom, phyl…
Cell characteristics
Where are enterobacteriaceae normally?
Oxidase?
Kingdom: Bacteria... Phylum: Proteobacteria... Class: Gammaproteoba…
Gram negative... rod-shaped... huge family - over 53 genera... May be…
Many genera are part of the normal flora... Most are ubiquitous…
Oxidase negative
Scientific classification... Kindom, phyl…
Kingdom: Bacteria... Phylum: Proteobacteria... Class: Gammaproteoba…
Cell characteristics
Gram negative... rod-shaped... huge family - over 53 genera... May be…
24 terms
E Coli
E Coli gram reaction?
E coli morphology?
E Coli motile?
E coli Aerobic/anaerobic?
Negative
Short rod
Yes
Aerobic/facultative anaerobe
E Coli gram reaction?
Negative
E coli morphology?
Short rod
32 terms
E. coli
What makes up most of our intestinal m…
ExPEC =
6 examples of ExPEC
Most common GNR cause of pneumonia?
bacteroides
extra-intestinal pathogenic e coli
UPEC, pneumonia, septicaemia, peritonitis (after appendicitis…
Haemophilus influenzae
What makes up most of our intestinal m…
bacteroides
ExPEC =
extra-intestinal pathogenic e coli
28 terms
E. coli
E. coli
Where is E. coli found?
Most strains of E. coli are
6 pathogenic strains are called
Large and diverse group of bacteria... Gram-neg, facultatively a…
Lower intestine of humans and animals
Harmless... Normal flora of human intestines... Benefits the host b…
Diarrheagenic E. coli... Can cause serious food poisoning... STEC,…
E. coli
Large and diverse group of bacteria... Gram-neg, facultatively a…
Where is E. coli found?
Lower intestine of humans and animals
20 terms
E. coli
¿Es parte de la flora normal?
¿Cómo puede adquirir virulencia y caus…
¿Qué producen estas bacterias?
¿Qué no fermenta EHEC que lo diferenci…
SI
Por intercambio genético
Ácido, gas... Indol a partir de triptófano
Sorbitol
¿Es parte de la flora normal?
SI
¿Cómo puede adquirir virulencia y caus…
Por intercambio genético
25 terms
E. coli
Pathogens
Raw
RTE
Cross Contamination in a Processing Pl…
Campylobacter (Gram -)... Salmonella (Gram -)... E. coli (Gram -)... L…
E. coli... Salmonella... Campylobacter
Listeria monocytogenes
-Contact by people... -Raw ingredients... -Equipment Surfaces... -Drai…
Pathogens
Campylobacter (Gram -)... Salmonella (Gram -)... E. coli (Gram -)... L…
Raw
E. coli... Salmonella... Campylobacter
29 terms
E. coli
General characteristics of Enterobacte…
Enterobacteriaceae can be divided into…
Clinical case: Fifi
Characteristics of E. coli
- gram neg. rods, facultatively anaerobic... - oxidase neg. - go…
- positive lactose fermenters: Escherichia, Klebsiella, Enter…
- 7 yr. old boston terrier, history of lethargy, vomiting, pu…
- strain variation in the diseases they produce. Cause non-en…
General characteristics of Enterobacte…
- gram neg. rods, facultatively anaerobic... - oxidase neg. - go…
Enterobacteriaceae can be divided into…
- positive lactose fermenters: Escherichia, Klebsiella, Enter…
36 terms
E.Coli
which toxin is similar to cholera toxi…
what does ETEC ST activate
if both ETEC toxins are present what i…
what does EIEC attach to
A/B exotoxin comparable to Cholera toxin. ... GPCR is constituti…
A/B exotoxin comparable to Cholera toxin. ... ST Activates guany…
Cholera-like disease
Colon via fimbriae
which toxin is similar to cholera toxi…
A/B exotoxin comparable to Cholera toxin. ... GPCR is constituti…
what does ETEC ST activate
A/B exotoxin comparable to Cholera toxin. ... ST Activates guany…
12 terms
E coli
Cream colored smooth edges slightly co…
+ growth + lac
+ growth + lac
A G
Tsa
Emb
Mac
Phenol red glu
Cream colored smooth edges slightly co…
Tsa
+ growth + lac
Emb
53 terms
E. coli
species jump... movement of genetic eleme…
GN motile rod... faculative anaerobe... lact…
O, H, K antigens
lps
How do commensalS become pathogenic (2)?
features of e coli?
E coli serotype based on?
O has?
species jump... movement of genetic eleme…
How do commensalS become pathogenic (2)?
GN motile rod... faculative anaerobe... lact…
features of e coli?
8 terms
E.coli
Symptoms of E.coli
The death rate
How to prevent this FBI?
How can E.coli affect the body?
Vomiting, Fever, Diarrhea ( sometimes bloody), & Stomach pain
3-5 % people die from E.coli every year
Wash hands before and after preparing food, Cook meat thoroug…
Toxins from harmful E.coli strands get into the blood stream…
Symptoms of E.coli
Vomiting, Fever, Diarrhea ( sometimes bloody), & Stomach pain
The death rate
3-5 % people die from E.coli every year
15 terms
E. coli
caracteristicas
cultivo
metabolismo
colonias
bacilo gram-, anaerobio facultativo, catalasa positivo, oxida…
medio con peptona o carne. Agar maconkey
fermenta glucosa (produce gas), fermenta manitol,
circulares y convexas con brillo
caracteristicas
bacilo gram-, anaerobio facultativo, catalasa positivo, oxida…
cultivo
medio con peptona o carne. Agar maconkey
18 terms
E. coli
*Characteristics
Zoonotic infections
Nomenclature
Enteric diseases
-gram negative rods... -oxidase negative... -can reduce nitrate to…
-leading cause of gastroenteritis in developing countries... -le…
-Serogroups:... --> "O" antigen... --> LPS... --> K or H antigen... -Sero…
-portal entry: oral... -motility may be an advantage: flagella... -…
*Characteristics
-gram negative rods... -oxidase negative... -can reduce nitrate to…
Zoonotic infections
-leading cause of gastroenteritis in developing countries... -le…
13 terms
E coli
large intestine
E coli
traveler's diarrhea
enterotoxigenic e coli
E coli is a common member of the normal flora in..
as long as these bacteria do not acquire genetic elements for…
strains that acquire... bacteriophage... plasmid DNA encoding enter…
produce enterotoxins... ETEC
large intestine
E coli is a common member of the normal flora in..
E coli
as long as these bacteria do not acquire genetic elements for…
18 terms
E. coli
Do E. coli have flagella?
Are E. coli aerobic or anaerobic?
What are a few sources of surface anti…
Do E. coli produce toxins or no?
Yes, they have peritrichous or polar flagella. May be motile.
Facultative anaerobes
Fimbria... Pili... Afimbrial adhesins... OMPs... Signal transduction mole…
Yes - endotoxins... Enterotoxins... Cytotoxins
Do E. coli have flagella?
Yes, they have peritrichous or polar flagella. May be motile.
Are E. coli aerobic or anaerobic?
Facultative anaerobes
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