New research links multilingualism with slower aging and stronger cognitive resilience. Learn how speaking multiple languages may support long-term health.
Category: life extension – Page 11
Nanoparticle–stem cell hybrids open a new horizon in bone regeneration
A research team in South Korea has successfully developed a novel technology that combines nanoparticles with stem cells to significantly improve 3D bone tissue regeneration. This advancement marks a step forward in the treatment of bone fractures and injuries, as well as in next-generation regenerative medicine.
The research is published in the journal ACS Biomaterials Science & Engineering.
Dr. Ki Young Kim and her team at the Korea Research Institute of Chemical Technology (KRICT), in collaboration with Professor Laura Ha at Sunmoon University, have engineered a nanoparticle-stem cell hybrid, termed a nanobiohybrid by integrating mesoporous silica nanoparticles (mSiO₂ NPs) with human adipose-derived mesenchymal stem cells (hADMSCs). The resulting hybrid cells demonstrated markedly enhanced osteogenic (bone-forming) capability.
Interplay Between Aging and Glial Cell Dysfunction: Implications for CNS Health
Aging is accompanied by complex cellular and molecular changes that compromise CNS function. Among these, glial cells (astrocytes, microglia, and oligodendrocytes) play a central role in maintaining neural homeostasis, modulating synaptic activity, and supporting metabolic demands. Emerging evidence indicates that aging disrupts glial cell physiology through processes including mitochondrial dysfunction, impaired proteostasis, chronic low-grade inflammation, and altered intercellular signaling. These alterations contribute to synaptic decline, myelin degeneration, and persistent, low-grade inflammation of the CNS. This review synthesizes current knowledge on the bidirectional relationship between aging and glial cell dysfunction, highlighting how age-related systemic and CNS-specific factors exacerbate glial impairments and, in turn, accelerate neural deterioration.
Glucagon Signaling Is Required For The Lifespan Extending Effect Of Calorie Restriction
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Urolithin A nudges aging immune cells toward a youthful profile in 28 days
An international research team focused on aging reports that urolithin A at 1,000 mg per day shifted human immune profiles toward a more naive-like, less exhausted CD8+ state and increased fatty acid oxidation capacity, with additional functional gains.
Urolithin A is a metabolite produced by gut bacteria after breaking down ellagic acid from certain foods, such as pomegranates and walnuts. While produced naturally through microbial digestion, it is in much smaller quantities than available as a supplement or used in the study.
Aging bodies face reduced production of mature T cells, shrinking naive T cell pools and chronic low-grade inflammation. Mitochondrial dysfunction and waning autophagy sit at the core of these shifts, with mitophagy failure linked to immune dysregulation and disease.