Not really news - but news to me - is that there are/have been (very small) clinical trials on devices that produce sound and light pulsed at 40 Hz for the treatment of Alzheimer's Disease. Exposure to sound and light at this frequency causes the brain to sync up and generate gamma brain waves. Similar treatment in mouse models resulted in beta amyloid and tau clearance. I haven't come across research on this treatment's application to other types of protein aggregate clearance, but if it works by making microglia function better, it might be useful.
Brain wave stimulation may improve Alzheimer's symptoms
A sad story - the device manufacturers did not provide treatments after the trial was completed:
Brain-wave treatment for Alzheimer's is promising, but the first human subject is left behind
A 40 Hz sound file: