Shared Flashcard Set

Details

Random Microbiology
First Aid 2012 pp146-219
158
Medical
Graduate
01/16/2013

Additional Medical Flashcards

 


 

Cards

Term
Gram stain poorly
Definition
Treponema (darkfield microscopy)
Rickettsia (intracellular)
Mycobacteria (acid-fast stain)
Mycoplasma (no cell wall)
Legionella (silver stain)
Chlamydia (intracellular)

These Rascals May Microscopically Lack Color
Term
Giemsa stain
Definition
Borrelia
Plasmodium
trypanosomes (African sleeping sickness, Chagas)
Chlamydia
Term
PAS stain
Definition
Whipple's disease (Tropheryma whippelii)
Term
Ziehl-Neelsen stain
Definition
acid-fast stain
Term
carbol fuchsin stain
Definition
acid-fast stain
Term
India ink stain
Definition
Cryptococcus neoformans
Term
mucicarmine stain
Definition
Cryptococcus neoformans
Term
silver stain
Definition
fungi, Legionella
Term
chocolate agar with factors V and X
Definition
Haemophilus flu
V = NAD
X = hematin
Term
Thayer-Martin media
Definition
Neisseria gonorrhoeae

Vancomycin
Polymyxin (colistin)
Nystatin
Term
Bordet-Gengou agar
Definition
Bordetella pertussis
Term
potato agar
Definition
Bordetella pertussis
Term
tellurite plate
Definition
Corneybacterium diphtheriae
Term
Loffler's media
Definition
Corneybacterium diphtheriae
Term
Lowenstein-Jensen agar
Definition
Mycobacteria tuberculosis
Term
Eaton's agar
Definition
Mycoplasma pneumonia
Term
eosin-methylene blue (EMB) agar as green colonies with metallic sheen
Definition
E. coli
Term
choarcoal yeast extract agar buffered with cysteine and iron
Definition
Legionella
Term
Sabouraud's agar
Definition
fungi
Term
obligate aerobes
Definition
Nocardia, Pseudomonas aeruginosa, Mycobacterium tuberculosis, Bacillus

Nagging Pests Must Breathe
Term
obligate anaerobes
Definition
Clostridium, Bacteroides, Actinomyces

anaerobes Can't Breathe Air
Term
obligate intracellular
Definition
Rickettsia, Chlamydia

stay inside (cells) when it is Really Cold
Term
facultative intracellular
Definition
Salmonella, Neisseria, Brucella, Mycobacterium, Listeria, Francisella, Legionella, Yersinia pestis

Some Nasty Bugs May Live FacultativeLY
Term
encapsulated
Definition
Strep pneumo
Haemophilus Influenza type b
Neisseria meningitidis
Salmonella
Klebsiella pneumo
group b Strep

SHIN SKiS
quellung postive!!
Term
catalase-positive
Definition
S. aureus, Serratia, Pseudomonas, Aspergillus, Condidda, E. coli, Listeria, Nocardia

you need SSPACEL (+/- N) for your CATs
Term
urease positive bugs
Definition
urea --> CO2, NH3 --> increase pH (turn something pink?)

Proteus
Ureaplasma
Nocardia
Cryptococcus
H. pylori
Klebsiella
Staph saprophyticus
Staph epidermidis

PUNCH-KSS
Term
red pigment
Definition
Serratia marcscens

red maraschino cherries!!
Term
blue-green pigment
Definition
Pseudomonas aeruginosa
Term
yellow pigment
Definition
Staph aureus
Term
yellow "sulfur" granules
Definition
Actinomyces israelii

Isreal has yellow sand
Term
lysogeny exotoxins
Definition
shigA-like toxin
Botulism toxin (some strains)
Cholera toxin
Diptheria toxin
Erythrogenic toxin (Strep pyogenes)
Term
glycocalyx
Definition
polysaccharide
adherence to foreign surfaces
Term
Gram + vs. Gram - reactivity (TNF-alpha, IL-1)
Definition
Gram + -- lipoteichoic acid
Gram - -- lipopolysaccharide = endotoxin, part of outer membrane -- NOT SECRETED (Lipid A!!!)
Term
vaccines of capsule antigens
Definition
-- capsules are polysaccarides (except Anthrax) --> poor immune response
-- conjugate with protein (i.e. dipitheria toxin, tetanus toxoid, N. meningitides outer membrane protein complex!!
Term
Protein A, IgA protease, M protein
Definition
Protein A -- Staph aureus, binds Fc
IgA protease -- cut up IgA
M protein -- prevent phagocytosis --> antigen mimicry for rheumatic fever!!
Term
exotoxins vs. endotoxins -- location of genes, toxicity, heat stability
Definition
exotoxin -- plasmid/bacteriophage; HIGH toxicity; mostly heat labile
endotoxin -- chromosome; LOW toxicity; heat stable (can live at 100o!!)
Term
diphtheria toxin
Definition
Corynebacterium diphtheriae
inactivates EF-2
acts on heart and neurons
ADP ribosylating A-B toxin
Term
exotoxin A
Definition
Pseudomonas aeruginosa
inactivates EF-2
acts on liver
ADP ribosylating A-B toxin
Term
Shiga toxin
Definition
Shigella (invasive!!! #1, #2 toxin)
inactivates 60S (cuts rRNA)
Term
Shiga-like toxin
Definition
EHEC
inactivates 60S (cuts rRNA)
Term
verotoxin
Definition
= Shiga-like toxin
EHEC
inactivates 60S (cuts rRNA)
Term
heat-labile toxin
Definition
ETEC, similar in Campylobacter jejuni/Bacillus cereus?
overactivates adenylate cyclase --> increases cAMP (labile in the Air) --> increased secretion into gut
just like cholera toxin!!
ADP ribosylating A-B toxin
Term
heat-stable toxin
Definition
ETEC, Yersinia enterocolitica (invasive!!), similar in Staph aureus?
overactivates guanylate cyclase --> increases cGMP (stable on the Ground) --> decrease gut reabsorption!!
Term
edema factor
Definition
Bacillus anthracis
MIMICS adenylate cyclase --> increase cAMP --> edema (and impairs neutrophil function)
Term
cholera toxin
Definition
Vibrio cholerae
permanently activate Gs --> overactivates adenylate cyclase --> increases cAMP --> increased secretion into gut
just like heat-labile toxin!!
ADP ribosylating A-B toxin
Term
pertussis toxin
Definition
Bordetella pertussis
disables Gi --> increased cAMP --> impairs phagocytosis
ADP ribosylating A-B toxin
Term
tatanospasmin
Definition
Clostridium tetani
cleaves SNARE --> prevents glycine/GABA release
Term
botulism toxin
Definition
Clostridium botulinum
cleaves SNARE --> prevents ACh
Term
alpha toxin
Definition
Clostridium perfringens
phospholipase = lecithinase --> cell death!!
gas gangrene
double zone of hemolysis (inner beta, outer alpha)
Term
streptolysin O
Definition
Strep pyogenes
degrades cell membranes (i.e. RBC!!)
Term
toxic shock syndrome toxin
Definition
brings MHC II and TCR close --> continuous activation --> IL-1, IL-6, TNF-alpha!!
Term
other Bacillus anthracis exotoxin
Definition
lethal factor
inhibits protein kinase --> macrophage release of TNF-alpha and IL-1!!
Term
other Bordetella pertussis toxins
Definition
extracytoplasmic adenylyl cyclase (like edema factor!)
tracheal cytotoxin (cytotoxic to resp epithelial cells)
Term
Clostridium dificile toxins
Definition
Toxin A -- fluid secretion, inflammation --> white/yellow plaques with inflam cells and fibrin!!
Toxin B -- cytotoxic, destroys cytoskeleton
Term
other Strep pyogenes toxins
Definition
erythrogenic/pyrogenic toxin--> IL-1 --> scarlet fever!!
exotoxin A --> toxic shock
Term
endotoxin
Definition
Gram Negatives AND Listeria!!
directly activates macrophages (binds CD14!!) --> IL-1, TNF-alpha, NO (no T cells!!)
activates alternative C' pathway
activates Hageman factor --> DIC!!
Term
transformation
Definition
ability to take up foreign DNA
SHiN!!
Term
competence
Definition
ability to take up foreign DNA
SHiN!!
Term
transposition
Definition
DNA can from from plasmid to chromosome(may take some flanking chromosomal DNA with it!)
Term
F+ vs. Hfr
Definition
F+ = plasmid only
Hfr = can do transposition --> may have flanking chromosomal DNA
Term
generalized vs. specialized transduction
Definition
generalized -- lytic (bits of bacteria DNA from when it was chopped up)
specialized -- lysogenic (bits of flanking bacterial DNA)
Term
lancet-shaped
Definition
Strep pneumo
Term
Staph epidermis random things
Definition
forms biofilms
infected heart valve --> vancomycin +/- rifampin/gentamycin!!
Term
Strep mutans
Definition
Viridans strep -- make dextrans that let it adhere to fibrin on damaged valves!!
Term
Staph sanguis
Definition
Viridans strep -- make dextrans that let it adhere to fibrin on damaged valves!!
Term
can skin infection cause rheumatic fever?
Definition
NO!! only pharyngitis can.
But it can cause post-strep GN!!
Term
CAMP factor
Definition
Group B Strep
enlarges area of hemolysis formed by Staph aureus
Term
endocarditis and...
colon cancer
GU/GI manipulation
Definition
colon cancer -- Strep bovis (non-enterococcus Group D strep)
GU/GI -- Enterococcus
Term
Elek test
Definition
for Corynebacterium diphtheria toxin
Term
what you can see in Corynebacterium diphtheria
Definition
graunules!!
metachromatic (blue and red)
polar regions
stains with aniline dyes
polyphosphate
Term
dipicolinic acid
Definition
spores!
must autoclave (121oC for 15min!!)
Term
random spore former
Definition
Coxiella burnetii
Term
how exotoxins are release
Definition
most are secreted
Clostridium -- via autolysis!!
Term
"serpentine" or "medusa head" colonies
Definition
Bacillus anthracis
Term
wool, goat products
Definition
Bacillus anthracis
Term
special thing about Bacillus anthracis
Definition
capsule is D-glutamate (capsules usually polysaccharides!!)
Term
how to get Clostridium botulism
Definition
kids -- eat spores (honey)
adults -- eat pre-formed toxin (canned food)
Term
Renshaw cells
Definition
in spinal cord
acted on by tetanus toxin
Term
tumbling motility
Definition
Listeria monocytogenes
Term
"actin rockets"
Definition
Listeria monocytogenes
Term
how Listeria monocytogenes is "fought"
Definition
macrophages ingest Listeria --> killed via CELL-MEDIATED immunity
Term
pyogenic granulomas over whole body of baby!!
Definition
granulomatosis infantiseptica
Listeria monocytogenes
Term
oral/facial abscess that drain to skin!!
Definition
Actinomyces israelii
SNAP!
Term
reasons for false negative PPD
Definition
steroids
malnutrition
immunocompromised
sarcoidosis!!
Term
mycolic acid
Definition
Mycobacteria -- makes them acid-fast
long, branched, saturated FAs --> high lipid content!!
Term
cord factor
Definition
make them grow in parallel chains ("serpentine cords!!")
relates to VIRULENCE!!
Term
lepromatous vs. tuberculoid
Definition
lepromatous -- Th2 response, bad! all over!; non-reactive lepromin skin test!
tuberuloid -- Th1 response; good! just few hypoesthetic (invades Schwann cells) plaques!; positive lepromin skin test!
Term
weird thing about Neisseria meningitis
Definition
lipooligosaccharride = LOS (correlates to mortality/morbidity like LPS of other Gram negatives)
Term
Legionella pneumophila
Definition
Legionella pneumophila
pneumonia
diarrhea
HA/confusion
hyponatremia!! urine antigen!!
Term
black lesions on skin with sepsis
Definition
ecthyma gangrenosum (necrotic patches!!)
Pseudomonas aeruginosa
Term
hot tub folliculitis
Definition
Pseudomonas aeruginosa
Term
burn infections
Definition
Pseudomonas aeruginosa
Term
grape-like odor
Definition
Pseudomonas aeruginosa
Term
E. coli virulence factors
Definition
LPS -- septic shock
fimbriae -- GU (UTI, pyelo)
K capsule -- pneumonia, meningitis
Term
EPEC
Definition
attaches to GI tract --> flattens villi --> prevents reabsorption
Term
does NOT ferment sorbitol
Definition
EHEC
Term
Klebsiella
Definition
4 A's
Aspiration pneumo
Abscess in lung/liver
Alcoholics
diAbetics
** red current jelly sputum **
Term
Salmonella
Definition
flagella (hematogenous spread)
antibiotics bad!
Term
Shigella
Definition
super virulent! (small infectious load)
travel by actin (NO flagella)
invades via M CELLS (can't attach!)
antibiotics good!
Term
typhoid fever
Definition
Salmonella typhi
rose spots
GALLBLADDER is resevoir
Term
daycare outbreaks
Definition
Yersinia enterocolitica
pet feces!!, milk or pork
Term
liver dysfx (jaundice), kidney dysfx, conjunctivitis/photophobia, hemorrhage
Definition
Leptospira interrogans!!
Weil's disease (icterohemorrhagic leptospirosis!)
Term
treatment for Lyme disease
Definition
<9 -- amoxicillin
>9 -- doxycycline
Term
weird Lyme disease thing
Definition
AV nodal block!!
Term
3o syphilis thing i forget
Definition
aortitis (vasa vasorum destruction) --> aneurysms
Term
sign of appropriately treated syphilis
Definition
VDRL/RPR negative
FTA-ABS positive
Term
VDRL false positives
Definition
positive = aggregation/flocculation
Virus (mono, hepatitis)
Drugs
Rheumatic fever
Lupus, Leprosy
Term
complementation
Definition
one virus shares other virus's protein
Term
phenotypic mixing
Definition
one virus coated by other virus's SURFACE PROTEIN --> can infect new target, but progeny will have old surface proteins
Term
live, killed, recombinant vaccines
Definition
live -- MMR, VZV, smallpox, yellow fever, Sabin polio
killed -- RIP Always -- Rabies, Influenza, Salk's Polio, HAV
recomb -- HBV, HPV
Term
acute hemorrhagic cystitis in little boys
Definition
adenovirus
Term
adult parvovirus
Definition
rheumatoid arthritis-like
pure RBC aplasia
Term
molluscum contagiosum
Definition
dome lesion with central dimple
poxvirus
Term
Cowdry A
Definition
intranuclear inclusion
HSV, VZV
Term
"owl eye" inclusions
Definition
CMV
intranuclear and cytoplasmic inclusions
binds integrins!!
Term
what rhinovirus binds
Definition
ICAM-1
Term
what does SARS do
Definition
kill type II pneumocytes!!
Term
palimizumab
Definition
antibody to surface F protein of RSV (Synergist)
Term
bullet shaped
Definition
rabies
Term
Negri bodies
Definition
rabies
Purkinje cells of cerebellum
Term
shellfish
Definition
Hep A
Term
acute hepatitis findings
Definition
ballooning degenration (hepatocyte swelling)
Councilman bodies (pink apoptotic hepatocytes)
mononuclear infiltration
bridging necrosis (confluent hepatocyte necrosis)
lobular architecture disruption
Term
initial Hep B symptoms
Definition
"serum sickness" like
F, fatigue, joint pain, urticaria, pruritus, LAD
Term
fine, granular, pink hepatocyte
Definition
"ground glass" hepatocyte
Hep B
Term
high mutation in HCV
Definition
no 3'-->5' exonuclease activity
Term
usual presentation of Hep A
Definition
asymptomatic!! NO jaundice!!
Term
usual end to Hep C
Definition
#1 stable chronic hepatitis
#2 cirrhosis
Term
killing pregnant women
Definition
Hep E -- waterborne
Term
weird Hep D thing
Definition
needs Hep B ENVELOPE!!
Term
what do obligate intracellular organisms need?!?!
Definition
Rickettsia -- NAD+, CoA
Chlamydia -- ATP
Term
Weil-Felix reaction
Definition
Rickettsial diseases -- EXCEPT Q fever
agglutination when mixed with Proteus (Abs cross-react with Proteus O)
latex agglutination also used
Term
palms and soles rashes
Definition
Coxsackie A
Rocky Mountain spotted fever
syphilis
CARS!!
Term
atypicals
Definition
mycoplasma
chlamydia
legionella
Term
forms of chlamydia
Definition
elementary body -- enters
reticulate body -- replicates; seen in culture
Term
no muramic acid in cell wall!!
Definition
chlamydia
Term
chlamydia serotypes
Definition
A-C -- blindness
L1-3 -- lymphogranuloma venereum (LGV)
everything else -- everything else
Term
military recruits, prisons
Definition
Mycoplasma pneumonia
Term
cholesterol in cell membrane!!
Definition
Mycoplasma
Term
no cell wall!!
Definition
Mycoplasma
Term
Histoplasmosis
Definition
fills macrophages
Mississippi/Ohio river valleys
birds/bats
Term
Blastomycosis
Definition
broad-based budding
East and Central America
Term
Coccidioidomycosis
Definition
spherule filled with endospores
hyphae with doubly reflective wall
Southwest
Term
Paracoccidioidomycosis
Definition
captain's wheel
Latin America
Term
tinea versicolor
Definition
Malassezia furfur
spaghetti and meaball
more visible after suntanning
miconazole, selenium sulfide
Term
Candida albicans
Definition
pseudohyphae and budding yeast
germ tubes
Term
Aspergillus fumigatus
Definition
septated, acute angles
invasive/disseminated disease can cause NECROSIS!!
Term
methenamine (GMS) stain
Definition
cryptococcus
Term
latex agglutination
Definition
cryptococcus, Rickettsial disease
Term
Mucor and Rhizopus
Definition
DKA and leukemic patients!!
wide angle, non-septate
Term
disk-shaped yeast on silver stain
Definition
Pneumocystis jiroveci
Term
cigar-shaped budding yeast
Definition
Sporothrix schenckii
Tx. itraconazole, potassium iodide!!
Term
gp120, gp41, p24, p17
Definition
gp120 (env) -- docking (CCR5, CXCR4)
gp41 (env) -- fusion
p24 (gag) -- capsid
p17 (gag) -- matrix
Term
ELISA vs. Western blot
Definition
ELISA -- rule out
Western blot -- rule in (confirm)
Term
HIV -- low-grade F, cough, HSM, tongue ulcer
Definition
Histoplasma capsulatum
Term
bacillary angiomatosis vs. Kaposi's
Definition
bacillary angiomatosis -- Bartonella henselae, neutrophilic
Kaposi's -- HHV-8, lymphocytic, spindle cells and RBCs with slit-like vascular spaces
Term
cotton-wool spots, hemorrhage
Definition
CMV
Term
non-Hodgkin's lymphoma in HIV
Definition
Waldeyer's ring (oropharynx)
large cell type
Term
interstitial pneumonia in HIV
Definition
CMV
Supporting users have an ad free experience!