prions the newest disease agents
Download
Skip this Video
Download Presentation
Prions : The Newest Disease Agents

Loading in 2 Seconds...

play fullscreen
1 / 12

Prions : The Newest Disease Agents - PowerPoint PPT Presentation


  • 171 Views
  • Uploaded on

Prions : The Newest Disease Agents. Do Now: Complete the chart on your notes as completely as possible. Transmissible Spongiform Encephalopathy (TSE). TSE is a group of diseases caused by prions . A prion is a disease-causing protein. Common types of TSE: “Mad Cow Disease” (BSE)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Prions : The Newest Disease Agents' - gracie


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
prions the newest disease agents

Prions: The Newest Disease Agents

Do Now:

Complete the chart on your notes as completely as possible

transmissible spongiform encephalopathy tse
Transmissible Spongiform Encephalopathy (TSE)
  • TSE is a group of diseases caused by prions.
  • A prion is a disease-causing protein.
  • Common types of TSE:
    • “Mad Cow Disease” (BSE)
    • Scrapie
    • Kuru
    • Creutzfeldt-Jakob disease
how prions cause disease
How Prions Cause disease
  • This is a normal protein in your brain.
  • It has important functions your brain needs
same protein 2 shapes
Same Protein, 2 Shapes

Normal

Protein

Disease

Protein

(prion)

when good proteins go bad
When Good Proteins Go Bad
  • The prion changes the shape of the normal protein, making it defective and infectious.
so what about the cow
So What About the Cow?

Brain tissue of infected cow: spongiform

transmission cannibalism
Transmission: Cannibalism
  • Prions that cause disease are eaten, and then begin transforming proteins in the new victim.
  • Mad cow disease can be transmitted to humans (200+ known cases)
  • So how did cows get prions from other cows?
rendering factories
Rendering Factories
  • Industrial animal production feeds animals the remains of dead animals.
the meatrix
The Meatrix
  • Industrial food production (CAFOs) have had major effects on human health, as demonstrated in this unit:
    • H1N1 influenza
    • BSE
  • Other implications we have not considered that affect humans:
    • Pollution (12,000,000 tons of animal waste/day)
    • Antibiotic resistance (70% of all antibiotics fed to animals)
    • Animal welfare
ad