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Liver Molecule Fights Cognitive Decline
4 Jun
Summary
- Exercise releases liver molecule GPLD1 that aids cognitive function.
- GPLD1 breaks down TNAP, a protein causing leaky blood-brain barriers.
- Exercise and GPLD1 show therapeutic potential for Alzheimer's in mice.
Cognitive abilities naturally diminish with age, often leading to memory lapses and reduced mental flexibility. However, exercise may offer a powerful countermeasure.
Recent research has identified a molecule, GPLD1, released by the liver following exercise. This exerkine plays a crucial role in mitigating cognitive decline associated with aging and conditions like Alzheimer's disease in mice.
Scientists discovered that GPLD1 functions by breaking down TNAP, a protein that accumulates on the blood-brain barrier as we age. This accumulation makes the barrier leaky, potentially allowing inflammatory molecules to enter the brain and impairing cognitive function.
Studies involving mice demonstrated that higher levels of GPLD1 correlated with reduced cognitive deficits. When GPLD1 was administered to older mice or those modeled with Alzheimer's disease, it helped improve blood-brain barrier integrity, decrease amyloid plaque buildup, and enhance cognitive performance.
While these findings are promising for potential therapeutic strategies, experts caution that mouse models do not fully replicate human Alzheimer's disease. Nonetheless, the discovery of GPLD1's role highlights a significant pathway for future drug development and biomarker research aimed at preserving brain health.
