Google Play icon

Alzheimer-type brain pathology after transplantation of dura mater

Share
Posted January 27, 2016
Abeta-Plaques-Alzheimer

Brown colored Aβ plaques in the cerebral cortex in Alzheimer’s disease (Image: USZ).

Up to now Alzheimer’s disease has not been recognized as transmissible. Now researchers at the University of Zurich and the Medical University Vienna demonstrated Alzheimer-type pathology in brains of recipients of dura mater grafts who died later from Creutzfeldt-Jakob disease.

Alzheimer’s disease (AD) is characterized by progressive dementia and brain plaques consisting of the Aβ protein. Conventional wisdom has it that AD is not a transmissible disease. However, plaques recovered from brains of AD patients were repeatedly found to induce further plaques when injected into the brains of laboratory mice, suggesting that transmission may actually occur.

Reporting in today’s Swiss Medical Weekly, Karl Frontzek and colleagues (University of Zurich and Vienna Medical University) have investigated individuals who received brain grafts of dura mater during neurosurgery. The dura mater (“tough mother”) is the leathery membrane covering the brain and spinal cord. Such grafts were necessary to allow the brain to heal after surgery. Tragically, some of the dura mater donors were infected with prions (the agents causing the fatal Creutzfeldt-Jakob disease), and the grafting procedure transmitted the disease to the recipients.

Frontzek and colleagues now report the presence of Aβ plaques in 5 of 7 brains of relatively young recipients of dura mater grafts who succumbed to Creutzfeldt-Jakob disease. Aβ plaques were detected much more frequently than in brains of people who did not receive any dura mater grafts. Aβ plaques are highly unusual in young individuals and may have been caused by the dural grafts. This study adds to the evidence that the hallmarks of AD may indeed be transmissible under certain circumstances, and calls for heightened attention to an unexpected, potentially very serious problem of transplantation medicine.

Source: University of Zurich

Featured news from related categories:

Technology Org App
Google Play icon
85,468 science & technology articles

Most Popular Articles

  1. New treatment may reverse celiac disease (October 22, 2019)
  2. The World's Energy Storage Powerhouse (November 1, 2019)
  3. "Helical Engine" Proposed by NASA Engineer could Reach 99% the Speed of Light. But could it, really? (October 17, 2019)
  4. Plastic waste may be headed for the microwave (October 18, 2019)
  5. Universe is a Sphere and Not Flat After All According to a New Research (November 7, 2019)

Follow us

Facebook   Twitter   Pinterest   Tumblr   RSS   Newsletter via Email