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SEATTLE – A new year signifies fresh research on the wellness and health of the brain. On January 1, the Allen Institute released its most extensive study to date regarding aging brain cells in animals. Researchers remarked that these findings could assist in discovering methods to maintain cognitive sharpness for a more extended period.
This recent research at the Allen Institute provides insights into the aging process of the brain, alongside the deep interrelations between diet, inflammation, and overall brain health. The study received funding from the National Institutes of Health (NIH).
Researchers examined over 1.2 million brain cells from both young and old mice. They noted that mice were chosen for their brain similarities to humans in structure, function, genetics, and cell types. Experts clarified that older mice resemble late middle-aged humans.
The latest research concentrated on pinpointing specific cell types, especially glial cells (the brain’s supportive framework), and how those cells evolve with age.
They also examined “hot spots” where alterations transpire within brain cells. Representatives indicated that the scientists uncovered an accelerant for aging, stating, “In aging brains, inflammation intensifies while essential genes for brain structure and functioning diminish. This disparity reveals how aging heightens susceptibility to diseases.”
While investigating the cells, they identified the brain’s aging focal point: the area adjacent to the third ventricle of the hypothalamus. This region is vital for regulating food intake, metabolism, and the body’s utilization of nutrients. This focal point, also called a “hot spot,” suggests a significant link between diet, lifestyle, brain health, and the changes that may affect susceptibility to age-related brain ailments.
“Our theory is that those cell types are becoming less effective at processing signals from our surroundings or substances that we consume,” stated Kelly Jin, Ph.D., a scientist at the Allen Institute for Brain Science and the primary author of the study. “And this decline in efficiency somehow contributes to what we recognize as aging throughout our body. I find that quite fascinating, and it is impressive that we can detect those particular changes using our current methods.”
The Allen Institute indicated that comprehending the results in that hot spot will be essential for future inquiries. Not only does this help scientists determine which cells to focus on, but specialists believe it could also lead to the creation of therapeutics related to aging. This encompasses discovering more targeted dietary or pharmacological interventions designed to preserve brain health as one ages.
“Aging is the most significant risk factor for Alzheimer’s disease and various other debilitating brain conditions. These findings offer an exquisitely detailed map of which brain cells might be most impacted by aging,” declared Richard J. Hodes, M.D., director of NIH’s National Institute on Aging. “This novel map may fundamentally reshape the perspective of scientists regarding how aging influences the brain and serves as a blueprint for developing new therapies for aging-related cerebral afflictions.”
The discoveries made by the Allen Institute have now been published in Nature, a weekly global journal showcasing all domains of science and technology from leading researchers.
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