Clostridum Flashcards
(6 cards)
1
Q
Species of medical importance clostridium
A
Clostridium tetani Botulinum Clostridium perfringens Clostridium septicum Clostridium difficile
2
Q
Clostridium tetani
A
Large gram positive
Spore forming rods
Anaerobes
Produces tetanus toxin
3
Q
Reservior
A
Soil
4
Q
Transmission
A
Human bites
Requires low tissue oxygenation
5
Q
Pathogenesis
A
Spores germinate in tissues
Producing tetanus toxin, exotoxins (tetanospasmin)
Carried intra-axonally to CNS
binds to ganglioside receptors
Blocks release of inhibitory mediators (glycine, GABA)
Excitatory neurons are unopposed …. extreme muscle spasm
Most toxic substances known
6
Q
Disease: tetanus
A
Risus sardonicus Opistholonus Extreme muscle spasms Drooling Hydrophobia