PAPOVAVIRUS Flashcards

1
Q

char aa

A

Nakes dsdna viruses char as slow growinh.
replicate in nucleaus.

no envelope
resistant to deying freezing and solvents.

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2
Q

Warts(verruca)

A

L1- codes for major capsid protein and self assembles into virus like particles (VLPs)

L2- minor capsid protein. L2 protein help expose the keratinocyte bindingh detweminant of L1 protein allowing hpv to bind onto the basal keratinocyte and taken into the cell.

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3
Q

Warts(verruca)

cause vast majority of cutaneous non genital warts

A

HPV 1,2,27, and 57.

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4
Q

Warts(verruca) plantar warts in children younger than 12 yo.

A

HPV 1

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5
Q

Warts(verruca)

Hand

A

HPV2

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6
Q

Warts(verruca)

plantar warts >21 yo.

A

HPV 27,57

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7
Q

Warts(verruca)

external genitalia warts

A

HPV 6,11

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8
Q

Warts(verruca)

anogenital dysplasia

A

hpv 16/18

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9
Q

Warts(verruca)

WHIM Syndrome

A

Warts hypogammaglobulinemia infection and myelokathexis: gain of function mutation of CXCR4.

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10
Q

deficiency of GATA2

present w

A

Extensive warts.

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11
Q

GAT2 deficiency sundrome

A

WILD syndrome.

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12
Q

defIcient CD4, Hyper IGE ,caused by DOCK8 deficiency are 2 other Tbcell immunodef states assoc w

A

HPV infection

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13
Q

VERRUCA VULGARIS

HPV types that cause common warts

A

HPV 1, 2, 4 ,27, 57, 63

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14
Q

VERRUCA VULGARIS

common warts occur most commonly between ages

A

age 5-20 yo.

and only 15% occur after age 35yo.

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15
Q

warts in butches are caused by

A

HPV2 and 4.

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16
Q

27% or hand warts from butchers are caused by

A

HPV7.

17
Q

HPV… Has been reported to cause dystrophy of all fingernails w marked subungal hyperkeratosis and destruction of nail plate without periungal involvement.

A

HPV57

18
Q

HPV with higher risk of SCC

A

HPV 16 and 18

19
Q

clearance rates of common warts.

A

Spontaneous resolution.

children are 23% at 2 mos. 
30% at 3 mos 
50% at 1 year. 
65-78%  at  2 years. 
90% over 5 years.
20
Q

PIGMENTED WARTS

skin types

A

Skin type 3 to 6

21
Q

Pigmented warts Caused by HPV types

A

HPV 4, 60, 65.

22
Q

Pigmented warts

pogmentation is caused by

A

melanocytes in the basal layer of HPV infectee tissue that contain large amounts of melanin.

23
Q
FLAT WARTS (Verruca Plana) 
caused by hpv type
A

HPV 3, 10, 28, 41.

24
Q
FLAT WARTS (Verruca Plana) 
present as
A

2-4mm flat topped ppules tht are slightly erythematous or brown on pale skin and hyperpigmented ok darker skin.
occur kost commonly on sun exposed surfaces likely due to immunosuppression.
face and extremities are most common. spec forehead cheeks nose and area around mouth and backs of the hands. but can occur anywhere.

25
Q
FLAT WARTS (Verruca Plana) 
people that this is common ti
A

swimmers.
Autism spectrum disorders.
OCD who wash excessively and have dorsal hand dermatitis.

26
Q

of all clinical hpv infections….warte have the highest rate of spontaneous remission and are the nost challenging to treat because they are so flat to the skin.

TX OF CHOICE

A

flat warts.

Top. retinoid

27
Q

Plantar warts (verruca plantaris)

the ff HPV types cause plantar warts

A

1, 2, 27, 57

28
Q
Plantar warts (verruca plantaris) 
generally appear at
A

pressure points on the ball of the foot spec over the midmetatarsal area.

appear as soft pulpy cores are surrounded by a firm horny ring. plantar warts may be confused w corns or calluses. but warts have a soft central core and black or bleeding points from the superficial capillaries when pared down.

29
Q

occurs as smooth surfaced deep often inflamed and tender papules or plaques mostly on palms or soles butbalso beside or beneath the nails or less often on the pulp of digits. they are distinctively dome shaped and much bulkier beneath the surface than they appear.

A

Myrmecia type of verruca

30
Q

myrmecia isa caused by

A

HPV1

31
Q

cauaes a peculiar type of plantar wart caused a ridged wart because of the persistance of the dermatoglyphics accross the surface of the lesion. the warts are slightly elevated, skin colored 3-5mm papules. occur on non weight bearinh areas and lack the typical feat of plantar warts.

A

HPV-60.

32
Q

Tx

A

see ph 405