Exploiting the neuroprotective effects of α-klotho to tackle ageing- and neurodegeneration-related cognitive dysfunction.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanistic and preclinical research without systematic methodology or primary human data.
PubMed 34194816 · doi:10.1042/NS20200101
What was done
This narrative review summarizes recent research on the neuroprotective roles of the α-klotho protein and discusses how its biological properties might be harnessed to treat cognitive dysfunction associated with aging and neurodegenerative disorders such as Alzheimer's disease.
What was found
The abstract reports no numerical data. It identifies multiple proposed neuroprotective mechanisms of α-klotho, including enhancement of NMDA receptor signaling, stimulation of antioxidant defenses, suppression of inflammation, induction of autophagy, and clearance of amyloid-β. It also highlights major unresolved questions, such as which molecular form of α-klotho is active, its specific neuronal receptor, how peripheral administration impacts the brain, and the mechanism of the protective VS genetic variant.
Why it matters
Understanding how α-klotho impacts brain function highlights potential molecular pathways for future drug development against age-related cognitive impairment and neurodegeneration.
Limits
The paper is a narrative review presenting no new empirical data or systematic synthesis. The clinical efficacy, pharmacokinetics, neuronal receptors, and translational viability of α-klotho-based therapies in humans remain unestablished.
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