Prion Disease in Humans

 

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Luckily, prion disease in humans is rare, like one in million. However, the rapid spread through wild game animals and the history of transmission of a similar disease to humans from eating prion-infected beef means knowing about the disease is important.

Overview

Misfolded proteins called prions cause a group of deadly neurodegenerative disorders in humans called Creutzfeldt-Jakob Disease (CJD), named for the men who first described them. Three main forms are:

* Sporadic CJD – most common (85% of cases), unknown source/cause but the microscopic prion structure is like the type in sheep

* Hereditary CJD – 10% of cases; in families with a history of the disease and test positive for a genetic mutation

* Acquired CJD – transmitted by medical procedures or eating contaminated meat, or as in kuru from cannibalism.

The diseases are collectively known as Transmissible Spongiform Encephalopathies (TSEs) in animals, a descriptive term depicting the holes in brain tissue from abnormal protein accumulation. CJD is the most common of human prion disease; others include Fatal Familial insomnia (FFI), and Gerstmann-Straussler-Scheinker disease (GSS).

Symptoms of CJD

Neurologic symptoms in cattle bear some resemblance to prion-infected humans. Variant Creutzfeldt – Jakob (vCJD), the human form caused by mad cow prions, begins with visual changes, color variation and distortion of figures. Progression occurs over months and is varied depending on the area of brain most affected.

Symptoms include emotional instability, (crying, laughing, anger outbursts), visual hallucinations, slow thinking, memory loss, and impaired judgment. As the disease worsens, tremors, poor balance, stiffness and jerking muscles cause trouble walking. Ultimately, the person is bedridden and lapses into a coma. Symptoms overlap with other neurodegenerative diseases including Alzheimer’s and Parkinson’s.

Diagnosis

Neurological evaluations for these symptoms often include brain MRI or CT scans and spinal fluid testing. A brain biopsy provides the definitive diagnosis, but new blood and urine tests are available. Microscopic findings show characteristic protein accumulations with holes, making brain tissue look like a sponge. To identify the origin of the disease, differences in the abnormal folding of prion proteins can be determined at the Human Prion Surveillance Center in Cleveland, Ohio.

We have hope for rapid diagnosis and treatment with researchers around the world andBaby black ears.edsquare.jpg in Montana at the NIH Rocky Mountain Lab in Hamilton, searching for ways to stop prion disease. The current concern is saving the wildlife.

 

 

 

More information can be found online at the NIH Fact Sheet website:

https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Fact-Sheets/Creutzfeldt-Jakob-Disease-Fact-Sheet

I am finishing final editing on Extinction, a prion medical thriller and will soon be ready to query agents.

Thanks for stopping by.

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Betty Kuffel, MD

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About bettykuffel

Author and retired medical doctor with broad interests in writing, flying, photography and outdoor life. She is a monthly health columnist in Montana Woman Magazine and has six nonfiction & fiction Indie published books available on Amazon. Writing projects include: multiple books of fiction including a biological thriller, medical thriller series, a romantic intrigue, apsychological thriller set in 1960 she is co-authoring with her sister Bev, and others in process. Dr. Kuffel lives in MT with husband Tom, two dogs and neighborhood deer.
This entry was posted in Beef, Biological Thriller, Creutzfeldt-Jakob Disease, Deer, Medical Thriller, Prion Disease and tagged , , . Bookmark the permalink.

1 Response to Prion Disease in Humans

  1. debbieburkewriter2016 says:

    Betty, as before, when I try to comment, your wordpress won’t accept my password.

    If you can bypass that, here’s what I’d like to say:

    Thank you for the fascinating–and scary–information. Looking forward to publication of your medical thriller EXTINCTION!

    Debbie

    On Mon, Apr 29, 2019 at 1:04 AM Author Betty Kuffel, MD wrote:

    > bettykuffel posted: ” Luckily, prion disease in humans is rare, like one > in million. However, the rapid spread through wild game animals and the > history of transmission of a similar disease to humans from eating > prion-infected beef means knowing about the disease is ” >

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