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CNS pathogens
ONU med micro r-anderson
26
Microbiology
Undergraduate 2
12/10/2011

Additional Microbiology Flashcards

 


 

Cards

Term
meningitis def.
Definition
inflammation of the lining surrounding the brain and spinal cord
Term
host defenses
Definition
skin and mucous membranes
blood and lymph
blood/brain barrier
Term
microbial strategies to bypass defenses
Definition
IgA protease
antiphagocytic capsules
Term
types of meningitis
Definition
viral, fungal, bacterial
Term
bacterial men. causative agents
Definition
strep pneumoniae
neisseria meningitidis
hemophilis influenzae
Term
bacterial men. reservoir
Definition
asymptomatic carriers
Term
bacterial men. transmission
Definition
droplet, fomites
direct
Term
clinical signs
Definition
early: sore throat, fever, headache, stiff neck, drowsiness, nausea/vomiting
late: coma, neurological disorders, death
Term
strep. pneumoniae etiology
Definition
Gm + cocci
antiphagocytic capsule
IgA protease
mortality: 30-40%
complications: seizures, deafness, blindness
Term
neisseria meningitidis etiology
Definition
Gm - diplococci
antiphagocytic capsule
IgA protease
commonly carried asymptomatic
mortality: 100% untreated, 5-10% treated
complicaitons: rash, no permanent CNS damage
Term
hemophilus influenzae type b etiology
Definition
Gm - rod
antiphagocytic capsule
IgA protease
kids
mortality: 6%
complications: deafness, retardation, seizures
Term
men. pathogenesis
Definition
entry: nasopharynx-->blood-->CSF
attach: mucosa of nasopharyns
avoid: protected environment, IgA protease
damage: initial: mucosa damage to get into bllod stream
late: inflammation, CNS swelling, capillary damage
exit: coughing sneezing
Term
diagnosis
Definition
spinal tap to remove CSF
microscopy
Gm staining
ELISA testing
culture
Term
men. immediate treatment
Definition
ampicillin
Term
men. strep. pneumoniae treat
Definition
vaccine - pneumovax 23-valent
Term
men. neisseria meningitidis treatment
Definition
vaccine
prophylatic rifampicin
Term
men. hemophilus influenzae treatment
Definition
vaccine - hib vaccine
Term
rabies def
Definition
acute viral infection affecting the CNS of animals
lethal
Term
rabies etiology
Definition
Rhabdovirus
ssRNA negative
bullet shaped capsid
enveloped
Term
rabies reservoir
Definition
wild animal populations
Term
rabies transmission
Definition
primarily parenteral route
usually animal bite
saliva from infected animal needs to get under skin
Term
rabies clinical signs and symptoms
Definition
low grade fever, pain, numbness, tingling, anxiety, stress, tension, restlessness, excitability, drooling, foaming at mouth, loss of muscle control, muscle spasms, convulsions, brain lesions, death
Term
rabies pathogenesis
Definition
entry: parenteral route
attach: connective tissue
avoid: intracellular the protected environment
damage: behavioral changes, paralysis of swallowing reflex
exit: replicates and released through salvia
Term
rabies diagnosis
Definition
post mortem examination of brain tissue
Term
rabies treatment
Definition
post exposure vaccination
Term
rabies prevention
Definition
vaccination of domestic pets and bat researchers, spelunkers, and wild-life personnel
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