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Microbiology 6
Step 1 Review: RNA Viruses 1
126
Biology
Graduate
12/24/2007

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Cards

Term
Name the 4 properites of Enteroviruses
Definition

1.  Non-enveloped

2.  (+) ssRNA

3.  Resistant to inactivation to detergens

4.  Stable at acidic pH or Room temperature 

Term
Where do the enterovirus replicate?
Definition
Tonsils of the throat & peyer patches
Term
What day to enteroviruses spread to the lymph nodes
Definition
Day 2
Term
When do the first symptoms of enteroviruses appear
Definition
Day 3
Term
How are the enteroviruses transmitted
Definition
Fecal-oral
Term
Name the 3 types of polio in order
Definition

1.  Abortive Poliomyelities

2.  Nonparalytic Polio

3.  Paralytic Polio 

Term
What's the most common manifestation of polio
Definition
Abortive Polio
Term

What are the manifestations of Abortive polio

HINT:  4 

Definition

1.  Fever

2.  Malaise

3.  Nausea

4.  Sore throat 

Term
What are the symptoms of Nonparalytic polio
Definition

"Aseptic meningitis"

Stiffness & pain in the back & neck 

Term

In regards to polio what phase include the symptoms:

1.  Flaccid paralysis

2.  Paralysis of all 4 limbs, CN & Muscles of respiration 

Definition
Paralytic Polio
Term
What are the findings in the CSF of Polio
Definition

1.  Increase in leukocytes

2.  Increase in proteins

3.  Sugar levels remain normal 

Term
What's the treatment for Polio
Definition
There is no treatment, it's supportive
Term
There are 2 vaccines for Polio what are they
Definition
Liver attenuated & killed inactivated
Term
Poliovirus is also known as _______
Definition
Picornaviridae Enterovirus
Term
Name the 5 enteroviruses
Definition

1.  Polio

2.  Coxsackieviruses

3.  Norwalk virus

4.  Echovirus  1-31 & 68-72

5.  Rotavirus (only one w/ dsRNA) 

Term
Coxsackievirus B is one of the most common cause of _________ ________ ______
Definition
Viral heart disease "Myocardiopathy"
Term
Coxsackievirus A is associated w/ ______ & ______
Definition

1.  Herpangina

2.  Hand, foot & mouth disease 

Term
What is herpangia
Definition
Red oropharynx vesicles, fever, sore throat
Term
Coxsackievirus A or B can cause
Definition

1.  Aspetic meningitis

2.  URT infection 

Term
What does ECHO stand for
Definition

Enteric

Cytopathogenic

Human

Orphan 

Term

Echovirus can cause _____

HINT 4 things 

Definition

1.  Asptic meningitis

2.  Manulopapular & vesciluar rash

3.  Conjuntivitis

4.  Diarrhea 

Term
When are Echovirus 1-13 aspectic meningitis more likely to occur
Definition
Summer
Term
Outbreak of diarreha in infants not infected w/ enterobacteria is due to
Definition
Echo 1-31
Term
Where would you isolate Echovirus 68 from
Definition
RT of kids w/ bronchiolitis or pneumonia
Term
Echovirus 70 is the chief cause of ________ ________
Definition
Hemmorrhagic conjunctivitis
Term
Echovirus 71 is a major cause of ___  ______
Definition
CNS disease
Term
Symptoms of Echovirus 72 resemble _____
Definition
Hepatitis A
Term
How does rotavirus differ form the rest of the enteroviruses
Definition
dsRNA
Term
What's the make up of Rotavirus
Definition

1.  Icosahedral nucleocapsid

2.  Nonenveloped

3.  DS segmented

 

Term
Which virus is the single most important world wide cause of _______ _______
Definition
Childhood diarrhea
Term
Who is more at risk for contracting Rotavirus
Definition

1.  Daycare

2.  Hospital

3.  Camps 

Term
Rotavirus is asymptomatic in ______ ______ & _____
Definition

1.  young infants

2.  Adults 

Term
Name the symptoms of Rotavirus infection
Definition

1.  Vomiting, diarrhea & low fever

2.  Cough & running nose in 50%

3.  Dehydration & acidosis 

Term
Why can Rotavirus be considered life threatening?
Definition
Can cause dehydration & acidosis
Term
How would you detect rotavirus
Definition
EM or ELISA of feces
Term
Name the vaccine for Rotavirus
Definition
RotaTeq
Term
Rotavirus can be trasmitted by
Definition
fecal-oral
Term
What part of the GI tract does Rotavirus infect
Definition
Villus cells of proximal SI
Term
Rotavirus is also known as _______ _______
Definition
Reoviridae Rotavirus
Term
Norwalk virus is a _____ ____ ________
Definition

Later life infection

"50% > 50 yrs old" 

Term
Give the makeup us Norwalk virus.  What other virus shares this make up
Definition

1.  RNA

2.  Icosahedral nucleocapside

3.  Nonenveloped

4.  (+) ss nonsegmented

 

The other virus is Hep. E 

Term
Name the 3 Picornaviridae
Definition

1.  Polio

2.  Coxsackie

3.  Hep  A

Term
Give the makeup of Piconaviridae
Definition

1.  RNA

2.  Icosahedral

3.  Nonenveloped

4.  (+) SS nonsegmented 

Term
How is Norwalk virus transmitted
Definition
contaminated food/water
Term
Name the symptoms of a Norwalk virus infection
Definition

1.  Diarrhea

2.  Nausea, vomiting

3.  Abdominal pain 

Term
What's the makeup of Hep A
Definition

1.  RNA 

2.  Iscosahedral nucleocapsid

3.  Nonenveloped

4.  (+) SS nonsegmented

 

Term
What are the symptoms of Hep A virus
Definition

1.  Acute onset of fever

2.  Rash

3.  Ab. Pain

4.  Loss of appettite

5.  Jaundance 

Term
How do you diagnosis Hep A
Definition
Antibodies to HAV
Term
Who is HAV transmitted?
Definition
fecal-oral
Term
What vaccine is available for HAV?
Definition
Killed virus
Term
What's different about Hep. B virus from the rest of the Hepatitis viruses
Definition
It's a DNS virus
Term
What's the make up of Hep. B virus
Definition

1.  DNA virus

2.  Icosahedral nucleocapsid

3.  Enveloped

4.  DS circular 

Term
How does HBV replicate
Definition
Intergrates viral DNA into host and then transcribes HBV RNA and finally uses reverse transcriptase to make DNA
Term
What enzyme is used by HBV to repliacte it's DNA?
Definition
Reverse transcriptase
Term
What's the most common manifestation of HBV
Definition
Asymptomatic
Term
What are the symtpoms of symtpomatic HBV
Definition

1.  No fever

2.  Long lasting malaise

3.  Jaundace 

Term
What happens if you consume ALOH if you have HBV
Definition
Liver cirrhosis & carcinoma
Term
You can get HBV by _____ & contact w/ ______
Definition
sex and blood
Term

HBV, HCV & HDV all have

HINT 4 

Definition

1.  Blood transmission

2.  Chronic carrier state

3.  Cirrchosis

4.  Hepatocellular carcinoma 

Term
Which antibody do you use to reveal length of a HBV infection
Definition

Acute:

IgM anti-HBcAG

 

Chronic:

 IgG anti-HBcAG

Term
What do you look for in a HBV patient to determine if they contagious
Definition
HBeAg
Term
What presence of what antigen determines a HBV infection
Definition
HBsAg
Term
A chronic HBV infection can give you ______, & _______ ____________
Definition
Cirrohosis & hepatocellular carcinoma
Term
What kind of vaccine is available for HBA
Definition
killed virus
Term
What vaccine is avaiable for HBV
Definition
Hep B surface antigen
Term
What would you use treat HBV.  Why?
Definition

Inferferon alpha

Stimulates antibodies to Hep B surface antigen 

Term
Which 2 hepatitis viruses are transmitted via fecal-oral
Definition
Hep A and Hep E
Term
Most of HCV infections are _____
Definition
Asymptomatic
Term
What's the make up of HCV?  What other virus shares this make up
Definition

1.  (+) ssRNA nonsegmented

2.  Icosahedral nucleocapsid

3.  Enveloped

4.   Flaviviridae

 

Flavivirus 

Term
What do you transmitt HCV
Definition

Sex

Percutaneous contact w/ blood 

Term
What are the symptoms of HCV
Definition
Malaise & jaundace
Term
How would you treat HCV
Definition
Interferon w/ ribavirin
Term
What's the make up of Hep D Virus
Definition

1.  (-) ssRNA "circular"

2.  Icosahedral nucleocapsid

3.  Enveloped 

 

Term
What's Hep. D virus also known as
Definition
Deltavirus
Term
Hep D virus codes for 1 ___ that generates two proteins by ___ ____
Definition
Term
What does HDV need to replicate?
Definition
HB surface antigen
Term
In order for somebody to contract HDV what must the have been infected with?
Definition
HBV
Term
What do you use for prophalyaxis against HDV
Definition
HBV vaccine
Term
What's the make up of Orthmyxoviridae influenzavirus virus
Definition

1.  (-) ssRNA

2.  Helical nucleocapsid

3.  Enveloped

 

Term
Name the two major proteins on the envelop of influenzae virus
Definition
NA & HA
Term
In regards to influenzae, this protein is inside the membrane and is involved in assembly
Definition
Matrix "M" protein
Term
Influenzae Virus contains a nuclear capside w/ _____
Definition
(-) ssRNA
Term
(-) ssRNA from influenzae has ___ segments
Definition
8
Term
What's a drift when talking about influenza
Definition
Mutations in HA or NA that results in small changes a
Term
What's a shift when talking about influenzae
Definition
Complete change in HA or NA
Term
What are the symptoms for the flu
Definition

1.  Fever

2.  Cough

3.  Malasie

4.  Loss of appetite 

Term
What do you measure in the lab for a influenzae infection
Definition

Hemaggutination inhibition:

Measure HA using antibody titers 

Term
What does neuraminidase cleave
Definition
Neuraminic acid
Term
Neuraminidase (NA) disrupts ______ _____ exposing sialic acid & ______ ______ reducing surfactant
Definition

1.  Mucous layer

2.  Paralyzing cilia

Term
Neuraminidase is the target for which drugs
Definition
Zanamirvir & Oseltamivir
Term
What's the function of Hemagglutinin Activity (HA)
Definition

1.  Attaches to sialic acid receptors

2.  Fuse w/ the cell membrane 

Term
What is M-protein?
Definition
Ion channel that facilitates uncoating & assembly
Term
M-protein is the target for which drugs
Definition
Amantadine and Rimantadine
Term
How does influenzae virus get it's cap for mRNA
Definition
Snatches it from host mRNA
Term
The flu vaccine has which components
Definition
HA
Term
IFN g cases vasodilation & edema resulting in
Definition

1.  Rhinorrhea

2.  Pharynx, larynx swelling

3.  Trachea/bronchi inflammation 

Term
What's the makeup for Coronavirus
Definition

1.  (+) ssRNA nonsegmented

2.  Helical nucelocapsid

3.  Enveloped 

Term
What protein in coronavirus binds to sialic acid
Definition
HE protein
Term
The (+) ssRNA genome of Coronavirus is ______ & ________
Definition

Caped

Polyadenylated 

Term
Why is there a high incidence of muation in Coronavirus
Definition
Lacks proof reading
Term
What does coronavirus cause
Definition
1/3 of colds & SARS
Term
Give the symptoms of SARS
Definition

1.  Fever about 38 C

2.  Headache

3.  Maliase

4.  Aches

5.  Non-productive cough 

Term
How many ORF are there in SARS?  How many of them are unique to SARS
Definition
11 w/ 9 unique
Term
What's the classical diagnosis of SARS
Definition
Travel w/in 10 days of onset of symptoms to an area documented to have SARS or come in close contact w/in 10 days to a person w/ SARS
Term
Which protein in SARS is responsible for membrane fusion
Definition
S-protein
Term
Which protein in SARS gives it hemagglutinating ability
Definition
S protein
Term
The HE protein in SARS has ______ activity cleaving ____ ____
Definition

Esterase

sialic acid 

Term
Give the make up of Parainfluenza virus.  What other viruses share it
Definition

1.  (-) ssRNA non-segmented

2.  Helical nucleocapsid

3.  Enveloped 

Term
RSV is also known as ________ ______
Definition
Paramyxoviridae Penumovirus
Term
Parainflu. 1 & 2 cause ______
Definition
Cough "hacking cough"
Term
Parainflu 3 cause _________ & ________
Definition
Bronchiolitis & Pneumonia
Term
What season would you find Parainfluenzae 1 & 2
Definition
Fall & winter
Term
Parainfluenzae 3 is a ________ infection
Definition
Nosocomial
Term
What does the HN envelop protein do in Parainfluenze
Definition
Adsorption
Term
How does Parainfluenzae penetrate?
Definition
Requires cleavage of F protein by host enzyme
Term
How do you treat Parainfluenzae, RSV & rhinovirus?
Definition

Supportive

Reduce fever

Anti-histamines 

Anti-inflammatory 

Term
Ribavirin inhibits ___ replication
Definition
RSV
Term
Give the make up of Rhinovirus
Definition

1.  (+) ssRNA

2.  Icosahedral nucleocapsid

3.  Nonenveloped

 

Term
At what temperature does Rhinovirus repliacte the best at
Definition
33 C
Term
What are the symptoms of the common cold
Definition

1.  Sneezing

2.  Sore threat

3.  Nasal discharge 

Term
what's the incubation period of Rhinovirus
Definition
2-3 days
Term
Where is the respiratory tract is rhinovirus localized to
Definition
Upper respiratory tract
Term
Rhinovirus is seasonal, you would most likely find it in late ____ to ___ & ____ to _____
Definition
Term
What season would you find corona virus
Definition
Winter
Term
Rhinovirus attaches via _____ or ___ in post nasal pharynx
Definition
ICAM-1 or LDL
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