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29 Cards in this Set
- Front
- Back
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-Gram-Negative
-encapsulated coccobacillus |
Bordetella Pertussis
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1. Adhesion molecules that specifically recognize and bind to ciliated respiratory epithelial cells
2. Toxins that destroy and dislodge ciliated cells (a host primary defense) |
Virulence factors of B. pertussis
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The initial phase of pertussis is called the _________ _____
Marked by nasal drainage, congestion, sneezing, and occasional coughing |
Catarrhal stage
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The second stage of pertussis is the ___________ _________ . During this stage the child experiences recurrent, persistent coughing fits.
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Paroxysmal Stage
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Selenite or GN----Gram-negative---broth
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used to inhibit the normal microbiota and favor the growth of pathogens in fecal specimens
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Escherichia coli and other gram negative normal enteric flora that ferment lactose rapidily
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Coliforms
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generally non-lactose fermenting or slow lactose-fermenting bacteria that are either normal microbiota or regular pathogens
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Noncoliforms
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Samonella typhi
S. Cholerae-suis S. enteriditis Shigella dysenteriae S. flexneri S. bpudoo S. sonnei Yersina enterocolitica Y. pseudotuberculosis |
True Pathogenic Enterics
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Yesinia pestis
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True Pathogenic Nonenteric
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Flagellar antigen
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Designated H
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Capsule and /or fimbrial antigen
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Desiginated K
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Somatic or cell wall antigen
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Desiginated O
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Glucose Frementation
Nitrate reduction Oxidase-negative Most Flagellated Regular, straight rods |
Common characteristics of Enterobacteriaceae
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Causes severe diarrheal illness brought on by
1, Heat-Liable Toxin (LT) 2. Heat-Stable Toxin (ST) Has fimbriae to adhere to the small intestine |
Enterotoxigenic E. coli
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Causes inflammatory disease (and fever) similar to Shigella dysentery.
-Involves the invasion and ulceration of the mucosa of the large intestine -Blood in stool |
Enteroinvasive E. coli
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linked to a wasting form of infantile diarrhea
-under-developed countries |
Enteropathogenic E. coli
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causes hemorrhagic colitis and may led to hemolytic uremic syndrome which can cause severe damage to the kidney
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Enterohemorrhagic E. coli
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O157:H7
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Escherichia coli from fast-food hamburgers
-Also considered Enterohemorrhagic Pathogen |
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This type of bacteria has a cell wall receptor tht can fuse with the host cell membrane
- This connection creates a direct port into which the bacteria secrete toxins and other proteins directly into the host cell -Also has an acquired gene for shiga toxin from Shigella |
E. Coli )157:H7
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*Small motile, gram negative rods
*Faculative anaerobe *Ferments Lactose *Produces Positive results for both methyl red and indole test *Negative reactions for the Voges-Proskauer and citrate test |
E-Coli
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*Coliform
*Primary Pathogen *Not normal residents of Humans |
Samonellae and shigellae
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*Small motile, gram negative rods
*Faculative anaerobe *Ferments Lactose *Produces Positive results for both methyl red and indole test *Negative reactions for the Voges-Proskauer and citrate test |
E-Coli
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*Coliform
*Primary Pathogen *Not normal residents of Humans |
Samonellae and shigellae
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S. paratyphi A, S. schottmulleri (paratyphi B), S. hirschfeldii (paratyphi C) and S. typhimurium
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serotypess of Salmonella enteritidis
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Normal intestinal flora in cattle, poultry, rodents, and reptiles
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Salmonella
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*Small motile, gram-negative rods
*LPS Endotoxin, *Capsule (Vi antigen) *Causes food poisoning and gastroenteritis- vomiting, diarrhea, fluid loss and mucosal lesions |
Samonella enteriditis
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*small motile, gram-negative rods
*non-encapsulated and not fastidious *cause crippling abdominal cramps and frequent defecation of watery stool filled with mucus and blood |
Salmonella enteriditis
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_____differs from ________ in that it invades the villus cells of the large intestine rather than the small intestine
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Shigellosis
Salmonellosis |
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-instigates an inflammatory response tht causes extensive tisuue destruction.
-release of endotoxin causes fever --enterotoxin damages teh mucosa and villi -Local areas of erosion give rise to bleeding and heavy mucus secretion |
Shigella
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