Klotho Protects Thinking, Not Movement, in Parkinson's Mice
Graded Preliminary — cause and effect come from a single mouse model using only males; in humans there is only a genetic link seen in 437 patients.
Animal study. Findings may not carry over to people, which is why the grade is capped at Preliminary.
- Design
- Animal study
- Participants
- 437
- Duration
- —
- Funding
- NIH (NINDS), American Federation for Aging Research, Glenn Foundation, Bakar…
In mice carrying a Parkinson's protein, extra klotho protected memory but did not improve movement.
Parkinson's is known as a movement disease, but thinking often suffers too. Skills like planning and switching between tasks tend to slip first, and that decline predicts later dementia. New work points to a protein called klotho as a possible shield. In animals, klotho extends life and sharpens thinking.
The researchers first looked at 437 people with early Parkinson's who were not yet on medication. About one in four carried a gene variant called KL-VS, linked to higher klotho levels in the blood. In both groups studied, carriers did better on tests of planning and task switching. Their movement symptoms showed no clear difference.
To test cause and effect, the team used male mice carrying human alpha-synuclein, a protein that is harmful in Parkinson's. Mice that made extra klotho throughout life lived longer and did better on a memory task. The memory center of their brains held less alpha-synuclein. Their movement did not improve. The mouse model captures only part of Parkinson's, and whether extra klotho helps people with the disease was not tested.
Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.