Anti-Aging Roundup

Happy Tuesday everyone, and welcome to this special mini newsletter on the latest in anti-aging breakthroughs. There’s some interesting news in here on Alzheimer’s as well, which I feel is relevant due to the many similarities with aging.

Let’s get right to it.

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• Scientists have identified a kidney produced molecule called betaine that seems to drive many of the anti-aging benefits of regular exercise. During a sustained training program, betaine levels rise and help counter chronic inflammation. When taken on its own, betaine can mimic several effects of long term exercise, including improved immune function and better metabolic balance. The work helps explain why consistent training rejuvenates the body even though individual workouts create short term physiological stress. It also suggests supplements that could deliver some of exercise’s protective benefits for those unable (or just to busy) to stay active. (Science Daily)

• NYU researchers developed a protein based therapy that restores a specific type of immune cell (macrophages) in aged mice. As these cells come back, the mice’s skin blood flow improves, bruising heals faster, and the tissue regains more youthful repair capacity. The treatment seems to rejuvenate older macrophages in place, rather than recruiting fresh ones, suggesting a way to revitalize aged immune function without wholesale cell replacement. Because similar macrophage types exist in multiple organs, this approach could potentially protect or restore vascular integrity more broadly, beyond just the skin. (Singularity Hub)

• China has made dramatic human lifespan extension a national priority, with Xi Jinping caught on a hot mic not long ago discussing longevity research with Vladimir Putin. Shenzhen-based Lonvi Biosciences is developing anti-aging pills based on procyanidin C1, a grape seed extract compound that increased mouse lifespans by 9.4%, with their chief technology officer declaring “Living to 150 is definitely realistic.” Chinese scientists recently published research in Cell showing that engineered senescence resistant stem cells reversed biological aging in elderly primates by six to seven years in neural tissue. Not there yet, but they’re working hard in the right direction. (NYT)

• An international research team has discovered that boosting levels of NAD⁺—a natural metabolite that declines with age—restores memory in Alzheimer’s disease models by fixing RNA splicing errors that disrupt hundreds of genes crucial to neuron health. The researchers found that supplementation with NAD⁺ precursors “can offer therapeutic benefits in AD [Alzheimer’s Disease] animal models and early clinical trials]. The study, published in Science Advances, suggests that metabolic therapies and RNA splicing correction may be two arms of the same system—potentially opening a new therapeutic pathway for protecting the brains of those with Alzheimer’s. (Medical Xpress)

• Cedars-Sinai researchers created “young” immune cells from human stem cells that reversed cognitive decline and Alzheimer’s symptoms in mice, with treated animals showing better memory and healthier brain structures. The team used induced pluripotent stem cells—adult cells reprogrammed to an embryonic like state—to generate fresh mononuclear phagocytes, immune cells that normally clear harmful substances but decline with age. Mice receiving the young immune cells outperformed untreated mice on memory tests and maintained healthy numbers of mossy cells in the hippocampus, which typically decline with aging and Alzheimer’s. [Sidebar: Mossy cells are a type of excitatory neuron located in the dentate gyrus of the mammalian hippocampus, named for the “mossy” appearance of their dendrites. They are crucial for cognitive functions like learning and memory, and play a key role in regulating the activity of other neurons, including neural stem cells in the hippocampus]. The cells appeared to protect the brain indirectly, possibly by releasing anti-aging proteins or removing pro-aging factors from the bloodstream, since they didn’t cross into the brain itself. (Science Daily)

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Hope you all enjoyed that little mini newsletter. There’s another one on some dinosaur discoveries and other prehistoric life coming your way Wednesday

Thank you all for reading — and until next time, keep your eyes on the horizon.

-Owen