(04) Spirochetes

Question 1

(spirochetes)

1. gram?
2. shape?
3. distributed in water, soil, vegetation,
4. most pathogenic are what?
5. require what for grwoth?
6. use dark-field
7. speciated by what?

Answer 1

1. -
2. long helical rods (unique)
3. anaerobic
4. complex media
5. surface antigens

Question 2

(spirochetes)

(Morph)

1. proplasmic cylinder - contains what?
2. cytoplasmic wall - contain what?
3. outer sheath - contains what?
4. flagella also called what?
5. thickness/turns can help speciate

Answer 2

1. cytoplasmic and nuclear regions
2. PTG
3. LPS
4. axial fibrils (attached at basal insertion plate)

Question 3

(Spirochetes)

(Genera: Brachyspira, Serpulina, and Treponema)

(general characterisitscs of the genera)

1. oxygen?
2. shape?
3. stains well with what?
4. commnesal of what region of body?

Answer 3

1. anaerobic or microaerophilic
2. corkscrew rods 5-20 um long
3. giesma stain
4. oral cavity, intestinal tract, and urinary tract

Question 4

(Spirochetes)

(genus: leptospira)
1. widely distributed in nature and animals
2. oxygen?
3. requires what nutrients?
4. Can serovars be distinguished morphologically?

Answer 4

2. microaerophilic
3. vit B1 and B12, long chain fatty acids
4. NO!

(200 serovars - kind of lifke species - morph the same - but affect different hosts)

Question 5

(Spirochetes)

(Borellia)

(general characteristics)

1. many nonpath and commensals
2. general spirochete traits…
3. what used for transmission?

Answer 5

3. tick and louse

Question 6