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Microbiology 8:
DNA viruses
74
Biology
Graduate
12/27/2007

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Term
What's the make up of Parvoviridae
Definition

1.  ssDNA

2.  Icosahedral nucleocapsid

3.  Nonenveloped 

Term
How does Parvovirus causes the slapped face appearance
Definition
Deposit of immune complexes
Term
How does parovirus cause anemia?
Definition
Lyses precursor cells in the bone marrow
Term
Name the two cancer viruses
Definition

1.  Papillomavirus (HPV)

2.  Polyomavirus (JC) 

Term
HPV is the cause of the common _____
Definition
wart
Term
The common or flat wart is transmitted by
Definition
a break in the skin allowing the virus to enter
Term
Describe epdiermodysplasia veruciformis
Definition
wart leading to malignant conversion due to exposure to the sun
Term
Genital warts is caused by?
Definition
HPV
Term
Genital wart can convert to _____
Definition
squamous cell carcinoma
Term
which HPV strains convert to carcinoma
Definition
16, 18
Term
Which protein product of HPV binds to p53
Definition
E6
Term
what's the function for p53
Definition
induce expression of WAF 1 and causes cell cycle arrestz by inhibiting cyclins and cdks
Term
HPV E7 binds to ____ which is a negative regulator of cell growth
Definition
RB
Term
What's the make up of HPV, what other virus shares it
Definition

1.  dsDNA circular

2.  Icosahedral nucleocapsid

 

Polymavirus 

Term
Polyomavirus causes
Definition
Progressive Multifocal Leukoencephalopathy
Term
A JC virus non-productive infection is due to
Definition
Insufficent Large T antigen so viral replication cannot take place
Term
the middle T antigen of JC virus resembles
Definition
growth factor receptor and allows the cell to proliferate w/out Growth factor
Term
What does Large T antigen from polyomarius do?
Definition
Binds & activates p53 & RB
Term
what are the symptoms of Progressive mulifocal leukoencephalopathy
Definition

1.  Ataxia

2.  Abnormalities of motor funciton, speech & sensation

3.  Leads to dementia and death 

Term
Where does JC virus infect
Definition
myelinating oligodendrocytes in white matter
Term
Which virus causes Subacute Sclerosing Panencephalitis
Definition
Measles virus
Term
What are the symptoms of Subactue Sclerosing Panencephalitis
Definition

1.  Gradual progressing psychological degeneration

2.  personality changes

3.  Seizures

4.  Uncontrollable movements

5.  Leads to dementia & death 

Term
What's at risk for developing Subactue Sclerosing Panencephalitis
Definition
Measles before 2 and latient in the CNS for 6-15 years
Term
Prions cause which disease
Definition
CJD
Term
what are the symptoms of CJD
Definition

1.  Ataxia

2.  Neurological signs as alterations in hearing, speech, visions that lead to dementia 

Term
What's the diagnosis of CJD
Definition
Protease resistance prion
Term
What are the known transmissions of CJD
Definition

1.  Cornea transplants

2.  GH from cadavers that had CJD

3.  Consume contaminated meat

4.  Rare inherited form 

Term
What's the pathogenesis behind CJD
Definition
Noraml alpha helix changes conformation to beta pleated sheets
Term
The beta pleated sheets of CJD infects by linking _______ _____ bonds and form ______
Definition

disulfied bonds

fibrils 

Term
___ is the first protein made in Adenovirus gene expression, it binds to ______
Definition

E1A

105-RB 

Term
Adenovirus protein ___ binds to p53
Definition
E1B
Term
3 proteins are involved in adenovirus replication
Definition

TP acts as a primer

adDBP is a DNA binding protein

AdDNA poly is a DNA dependent polymerase 

Term
Adenovirus is latent in the ______ ____ and has _______ potential
Definition

lymphoid tissue

onocgenic 

Term
Name the 4 clincial presentations of adenovirus
Definition

Respiratory tract infection

Conjunctivitis

Hemoohagic cystitis:  infants

gastroenteritis 

Term
What's a complication of respiratory adenovirus infection
Definition
Meinogencephalatis
Term
Name the 3 modes of transmission of adenovirus
Definition

1.  Fecal oral

2.  Hand to eye

3.  Respiration 

Term
What's the classic shape of Orthopoxvirus (smallpox)
Definition
Dumbbell shape
Term
Small pox replication occurs in the _____, but gene expression & replication occurs in the ______
Definition

cytoplasm

nucleus 

Term
Describe gene repolication in small pox
Definition

Self priming leads to formation of high M.W concatemers which are cleaved and repaired to make the viral genome

Term
Describe the assembly phase of smallpox
Definition
Occurs in the cytoskeleton, comet tails form through the cytoplasm to the cell surface
Term
What is the clinical manifestation of Small pox
Definition
Pustular rash most common on the extremities, fever and respiratory symptoms
Term
monkeypox is more common in
Definition
Central & Western africa
Term
What's the symptoms of monkey pox
Definition
Pustular rash, fever and respiratory symptoms and differs from smallpox with lymph node swelling
Term
Name the 4 herpe viruses
Definition

1.  Herpes simplex virus 1 & 2

2.  Varicella Zoster

3.  Cytomegalovirus

4.  Epstein Barr 

Term
Which proteins are similar in HSV 1 & 2 and which ones are different
Definition
D is identical and G is different
Term
HSV codes for _______ _____ that makes it suspectible to Acyclovir and gancicgvir
Definition
Thymidine kinase
Term
What does Acyclovir and Gancicgvir target
Definition
Thymidine kinase
Term
HSV 1 infectious appear _____ the waist and HSV2 infections appear ____ the waist
Definition
above & below
Term

HSV 1 causes

HINT 4 

Definition

Gingvostomatitis (mouth ulcers)

Keratoconjunctivitis (uclers on the eyes)

Herpes labialis (cold sore)

Temporal lobe encephalitis 

Term
Extercellular protein 47 in herpes blocks
Definition
antigen presentation, it's the reason why it's latent
Term
Where does HSV1 hide out in?  How about HSV2
Definition
Trigeminal ganglia & Sacral ganglia
Term
Why is Acyclovir important in women?
Definition
worry and stress and trigger reactive HSV II
Term
CMV is the most common viral cause of ______ _______ in the U.S.
Definition
Mental retardation
Term
Name the TORCHES organisms that can cross the placenta
Definition

1.  Toxoplasmosis

2.  Rubella

3.  Cytomegalovirus

4.  Herpies, HIV

5.  Syphilis 

Term
What's congential cytomegalic inclusion disease
Definition
Caused by CMV, it's disease of the newborn associated w/ CMV
Term
A infant w/ congenital cytomegalic inclusion diseasee would present w/
Definition

1.  Mental retardation

2.  Hearing loss

3.  Mental defects 

Term
Give the symptoms of CMV induced Atypical Infectious Mono.
Definition

1.  Swollen lymph nodes

2.  fever

3.  Tiredness

4.  Differs from mono by absence  of sore throat

Term
the gold standard for diagnosising CMV is the
Definition
shell viral technique
Term
What's the treatment for CMV
Definition
Ganciclovir
Term
owl body intranuclear inclusions are associated w/
Definition
CMV
Term
Varicella-zoster viruse cause _____ by primary infection and _____ in recurrent form
Definition

Chicken pox

Shingles 

Term
Give the characteristics of chickenpox
Definition

1.  Flu like 

2.  lesion on the trunk, skin

Term
Where does the latient form of varicella zoster hide out
Definition
Dorsal root ganglion
Term
What's the difference in chicken pox infection and shingles
Definition
Shingles lesions are on a dermatome
Term
Name the varicella zoster virus vaccine
Definition
Oka vaccine, live attenuated
Term
Give the symptoms of mononucleosis
Definition

1.  Tiredness

2.  Sore throat

3.  Swollen lymph nodes

4.  Fever 

Term
What's the cause of the symptoms for mono
Definition
Over reaction of the immune system to EBV infected B cells
Term
Epstein Barr Virus infections B cells via
Definition
CD21 or CR 2 receptors
Term
name the 2 onca genes in EBV
Definition
LMP1 & LMP2
Term
LMP1 activates ___ receptor
Definition
TNF
Term
LMP2 constitutive activates
Definition
B-cell receptors
Term
The ____ ____ test diagnosis EBV
Definition
Mono spot
Term
Brukitts lymphoma requries 2 hits one from ___ and the other in c-myc (translocation in __ + _)
Definition
EBV & 14 + 8
Term
The incidence of Hodgkins disease is higher in people who had __
Definition
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