DNA viruses Flashcards

(40 cards)

1
Q

All enveloped viruses acquire their envelope from plasma membrane except for

A

Herpes virus (from nuclear membrane)

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2
Q

Purified nucleic acids of most dsDNA except for ______ are infectious

A

Poxviruses and HBV

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3
Q

Only live attenuated vaccine that may be given to HIV positive patients

A

MMR

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4
Q

DNA viruses

A
DNA viruses are HHAPPPPy viruses
Hepadna
Herpes
Adeno
Pox
Parvo
Polyoma
Papilloma
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5
Q

All DNA viruses have double-stranded DNA except

A

Parvovirus

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6
Q

All DNA viruses have linear DNA except

A

Papilloma, polyoma, hepadna

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7
Q

All DNA viruses are icosahedral except

A

Poxvirus

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8
Q

All DNA viruses replicate in the nucleus except

A

Poxvirus (cytoplasm)

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9
Q

Condition with bright red cheek rash (slapped cheeks) with fever coryza and sore throat

A

Erythema Infectiosum (Fifth Disease)

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10
Q

Etiology of Erythema Infectiosum (Fifth Disease)

A

Parvovirus B19

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11
Q

Causes transient but severe aplastic anemia in children sickel cell anemia, thalassemia or spherocytosis

A

Parvovirus B19

Aplastic crisis

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12
Q

Fetal infection caused by Parvovirus B19

A

Hydrops fetalis (2nd trimester)

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13
Q

Only virus with fiber (Penton fiber)

A

Adenovirus

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14
Q

Causes hemorrhagic cystitis

A

Adenovirus

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15
Q

Papilloma virus infects squamous cells and induce formation of cytoplasmic vacuole

A

Koilocytes

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16
Q

What genes in Papilloma virus encode proteins that inactivate tumor suppressor genes

A

genes E6 and E7

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17
Q

HPV that causes skin and plantar warts

18
Q

HPV that causes genital warts (condylomata acuminata) and respiratory tract papillomas

19
Q

HPV that causes carcinoma of cervix, penis and anus

A

HPV 16,18, 31,33

20
Q

DOC for HPV

A

Genital warts : Podophyllin
Skin warts: Liquid nitrogen
Plantar warts: Salicylic acid

21
Q

Causes progressive multifocal leukoencephalopathy (PML) in patients with AIDS

A

JC Polyoma virus

22
Q

Causes hemorrhagic cystitis and nephropathy in patients with solid organ and bone marrow transplant

A

BK Polyoma virus

23
Q

Site of latency period of herpes virus

A

HSV-1 - trigeminal ganglia

HSV-2 Lumbosacral ganglia

24
Q

DOC for herpes

25
Site of latency period for Varicella zoster virus
Dorsal root ganglia
26
Condition where in all stages of the disease are present at a single time
Varicella
27
A syndrome that is a complication of varicella
Reye's syndrom
28
A condition where in there is involvement of geniculate ganglion causes facial nerve paralysis
Ramsay hunt syndrome / Herpes zoster oticus
29
Blueberry muffin syndrome
CMV Congenital rubella Disseminated Neuroblastoma
30
Causes Heterophil-negative mononucleosis
CMV
31
DOC for CMV
Ganciclovir
32
3 causes of mononucleosis
CMV & Toxoplasmosis ( heterophil negative) | EBV (heterophil positive)
33
Virus associated with burkitt's lymphoma
EBV
34
Virus associated with nasopharyngeal CA in chinese people and hairy leukoplakia in AIDS patient
EBV
35
Virus associated with Kaposi's sarcoma
Human Herpesvirus -8
36
Largest virus
Smallpox
37
Disease with pinkish papular skin lesions with an umbilicated center
Molluscum contagiosum | Tx. Cifodovir
38
Only DNA virus that produces DNA by reverse transcription with mRNA as the template
Hepatitis B virus
39
DOC of Hepatitis virus
Interferon alpha | Lamivudin
40
Associated with Polyarteritis nodosa
Hepatitis B