L29 Herpes Flashcards

1
Q

Herpes Simplex Virus
Family
Genome
Virion

A

Alphaherpesviridae
dsDNA
Enveloped

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2
Q

Herpes reproduction cycle length

A

Short

Rapid spread in culture

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3
Q

Herpes host range

A

variable

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4
Q

Herpes latency location

A

Capacity to establish latency in sensory ganglia

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5
Q

Herpes 1 vs 2

A

1: eyes, oral
2: genital

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6
Q

HSV-1 transmission

A

oral oral

oral genital

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7
Q

HSV 2 transmission

A

genital genital

oral genital

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8
Q

HSV incidence

A

1: 2/3
2: 1/5

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9
Q

HSV incubation period

A

2-14 days (4-5 usually)

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10
Q

HSV symptoms

What percentage show

A

flu like symptoms w/ lesions

only 1/3 show symptoms

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11
Q

Latency

A

Genome circularizes and stays as an episome

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12
Q

Herpes outbreak tiggers

A

sunburn
systemic infection
immune impairment
stress

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13
Q

What type of immune response is required for herpes?

A

Cell mediated

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14
Q

What happens when someone is unable to produce antibodies?

A

They can still handle herpes

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15
Q

How does herpes modulate immune response

A

Bind antibodies

Conter the effects of interferon

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16
Q

Herpes treatment

A

acyclovir

Wont eliminate latent infection

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17
Q

Cytomegalovirus
Family
Genome
Virion

A

Betaherpesvirus
dsDNA
Enveloped

18
Q

CMV host range

A

restricted

19
Q

Cmv reproductive cycle

A

Long

slow progression in cell culture

20
Q

Epstein-Barr virus
Family
Genome
Virion

A

Gammaherpesvirus
dsDNA
nonenveloped

21
Q

Epstein barr targets

A

T and B lymphocytes

22
Q

CMV type of infection

A

Chronic persistant infection, not latent

23
Q

CMV infected cells

A

Become enlarged

24
Q

Epstein barr type of infection

25
Epstein barr latency in
lymphoid tissues
26
CMV exposure routes
Saliva Urine Sex
27
EBV exposure
Saliva
28
Clinical manifestatio of EBV, CMV in young adults
Mono
29
EBV carcinoma
Burketts lymphoma | Hodgkins lymphoma
30
Burketts lymphoma
tumor in jaw, eye socket, ovaries | common in equitorial africa
31
Types of hodgkins lymphoma
Nodular scLerosiing Mixed Cellularity Lymphocyte Depleted
32
Key characteristic of Beta/gammaherpesvirus
Immune evasion by inhibiting apoptosis and immune response
33
Antiviral therapy recommended for
disseminated CMV, EBV
34
CMV, EBV treatment
antiviral Immunoprophlaxis No vaccines
35
HPV Family Genome Virion
Papillomaviridae Circular dsDNA non envelope icosahedral
36
HPV infection in ____ layer of skin
basal
37
_____ required for hpv genome repliation
cell polymerase
38
Is HPV lytic or non lytic
non lytic
39
HPV spreads thru
skin to skin | fomites
40
HPV complication
Respiratory papillomatosis
41
HPV cancer
E7 blocks RB: cell proliferation | E6 blocks p53 tumor suppressor pathway
42
How do condoms reduce risk of hpv
no proof that they actually do reduce risk