The Real ME: A Stock Photography Resource for the Media
We’ve all seen them in the news stories about ME/CFS: the guy in a suit at the office, yawning; the beautiful woman sitting at her desk with her immaculate make-up and elegantly coiffed hair, hand to her head and looking slightly pained.
Discuss the article on the Forums.

peripher polyneuropathy and PrPc

Discussion in 'Other Health News and Research' started by lansbergen, Jan 4, 2014.

  1. lansbergen

    lansbergen Senior Member


    Axonal prion protein is required for peripheral myelin maintenance


    The integrity of peripheral nerves relies on communication between axons and Schwann cells. The axonal signals that ensure myelin maintenance are distinct from those that direct myelination and are largely unknown. Here we show that ablation of the prion protein PrPC triggers a chronic demyelinating polyneuropathy (CDP) in four independently targeted mouse strains. Ablation of the neighboring Prnd locus, or inbreeding to four distinct mouse strains, did not modulate the CDP. CDP was triggered by depletion of PrPC specifically in neurons, but not in Schwann cells, and was suppressed by PrPC expression restricted to neurons but not to Schwann cells. CDP was prevented by PrPC variants that undergo proteolytic amino-proximal cleavage, but not by variants that are nonpermissive for cleavage, including secreted PrPC lacking its glycolipid membrane anchor. These results indicate that neuronal expression and regulated proteolysis of PrPC are essential for myelin maintenance.

See more popular forum discussions.

Share This Page