Topic
Degenerative neurological disorder marked by tremor, slowed movement and changes to speech, caused by the loss of dopamine-producing neurons in the brain.
Hong Kong Polytechnic University team reports hollow silica nanostructures that kept responding to ultrasound in mouse brains for over nine weeks. Earlier nanoparticle approaches lacked that durability. The evidence so far comes from mice.
Reality
Oxford researchers report human microglia nibble alpha-synuclein clumps off living dopamine neurons in stem-cell cultures, a process that needs GPNMB. A gene flagged by genome-wide studies now has a testable role in the brain's immune cells, though so far only in a dish.
Reality
Deep brain stimulation within 7 to 8 years of diagnosis preserved cognition in Parkinson's patients with a GBA1 mutation, a 10-center study of 343 found. The timing effect appeared only in carriers, pointing clinicians toward testing for the mutation before deciding when to operate.
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Canadian researchers scanning 24 people with long COVID found fewer dopamine nerve endings in the striatum, a shortfall tied to a quarter of symptom variance. The result gives drug trials a dopamine hypothesis to test, though the scan reads a protein marker that stands in for the neurons themselves.
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Tokyo Metropolitan Institute of Medical Science researchers report that RAB1A and RAB1B, two of about 60 human RAB proteins, tie OPTN to ATG9A vesicles. The link helps set where the membrane around a damaged mitochondrion begins to form, and labs can now test that step directly.
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Fraunhofer IIS researchers found swab odors from 24 people differed between healthy volunteers and those with Parkinson's, cognitive impairment or COVID-19. The team calls it a proof of concept, and a needle-free test would first have to hold up in larger, age-matched groups outside the lab.
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Cellular Intelligence has added Bob Langer and Yann LeCun to its scientific advisory board. The $62m to $70m it has raised now has to take STEM-PD, the cell therapy Novo Nordisk dropped, through Phase 2.
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University of Georgia researchers report the ten genes in Nature Communications and characterized six of them in detail. Knocking some of them out left planarians unable to make new dopamine neurons and slow to move.
Perspective Coverage
3 publishersReality
Palomar Labs' first spinout is built on a molecule whose parent compound was tested in the 1970s and documented not to be hallucinogenic. Apathy affects about 40% of people with Parkinson's, and no drug is approved for it.
Reality
The paper counted diagnoses clinicians wrote for patients aged 50 and over, and the risk more than doubled when hearing loss came with the voice disorder. Voice software was never in the study.
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