Researchers find a protein that halts brain decline, Pg19

Key Highlights:

• Research indicates that declining levels of the brain protein Menin can trigger inflammation, memory decline, and other age-related changes.
• Restoring Menin levels in mice reversed several signs of aging, suggesting its role as an anti-aging factor.
• The study highlights the hypothalamus as a central command center for aging.
• Supplementation with the amino acid D-serine improved cognitive function in mice with reduced Menin levels.

Detailed Insights:

• The study, led by researchers at Xiamen University, found that Menin levels sharply decreased in the ventromedial hypothalamus (VMH) of aging mice, a region linked to metabolism and systemic aging.
• Reduced Menin activity in younger mice led to increased brain inflammation, thinning skin, lower bone mass, impaired balance, memory problems, and a shorter lifespan.
• Lower Menin levels were associated with reduced activity of an enzyme required for D-serine synthesis, impacting neuronal communication, learning, and memory.
• Declining D-serine levels have been linked to aging-related cognitive impairment and reduced synaptic plasticity, affecting the brain's ability to strengthen neural connections.

Scientific/Technical Concepts Involved:

• Menin: A brain protein that helps suppress inflammation and plays a protective role against aging.
• Hypothalamus: A brain region that regulates metabolism, hormones, body temperature, sleep, and stress responses.
• D-serine: An amino acid and neurotransmitter that regulates communication between neurons and is important for learning and memory.
• Ventromedial Hypothalamus (VMH): A region within the hypothalamus linked to metabolism and systemic aging.