Single-nucleus multi-omics reveals reversible molecular signatures in skeletal muscle of patients with heart failure with preserved ejection fraction
Journal: Unknown Journal | Authors: Bose ML, Varshney A, Carruthers NJ, Orchard P, Piper M, Pashos E, Dolgachev V, Manickam N, Curka E, Jean-Beltran PM, Kitzman D, Fauman E, Damilano F, Roth Flach RJ, Nicklas B, Brubaker PH, Parker S. | DOI: 10.64898/2026.10.07.756854
Plain English Takeaway
Supervised diet and exercise physically reverse aging-like muscle fiber loss and epigenetic silencing of metabolic pathways in patients with heart failure.
Clinical & Deep Dive
Profiling 132,568 nuclei from skeletal muscle biopsies of healthy controls and HFpEF patients before and after lifestyle intervention revealed type 1 fiber depletion and repression of calcium handling genes, both of which were partially reversed following supervised caloric restriction and exercise training.
Bone regulates locomotion by sustaining motoneuronal mitochondrial function
Journal: Unknown Journal | Authors: Romeo-Guitart D, Tirani T, Milunov D, Torres-Juacida AK, Lamotte dβIncamps B, Arenas-Plascencia C, Durand S, Nemazanyy I, Moriceau S, Saha S, Karsenty G, Oury F. | DOI: 10.64898/2026.10.07.750453
Plain English Takeaway
The bone-derived hormone osteocalcin promotes motoneuron autophagy and mitochondrial quality, and restoring its levels reverses age-related physical and motor decline in mice.
Clinical & Deep Dive
Osteocalcin signaling through GPR158 on cholinergic spinal motor neurons governs mitochondrial activity and mitophagy; replenishment of osteocalcin in aged mice rescued age-associated loss of locomotor performance.
Engaging the host adaptive response to nutrient limitation delays cancer cachexia
Journal: Unknown Journal | Authors: Gomez-Jenkins M, Das T, Ibrahim M, Fard D, Lopez-Darwin S, Raeber J, Powers J, Hu Z, Sarkar H, CararoLopes E, Sawant A, Reyes-Castellanos G, Lu W, Qiang H, Sen A, Kwon Y, Wadhera S, Armughan H, Shi S, Rabinowitz JD, Hui S, Anthony TG, Skinnider M, Raphael B, Goncalves MD, Janowitz T, White E. | DOI: 10.64898/2026.10.08.757672
Plain English Takeaway
Preconditioning with calorie restriction helps protect against muscle wasting and inflammatory damage during cancer, leading to longer survival in preclinical models.
Clinical & Deep Dive
Using a murine lung cancer cachexia model, researchers observed that while neutralizing individual pro-inflammatory cytokines failed to prevent wasting, caloric restriction prior to tumor initiation dampened catabolic programs, preserved lean tissue, and significantly prolonged overall survival.
Zinc preserves translational proteostasis to counteract aging and proteotoxicity in Caenorhabditis elegans
Journal: Unknown Journal | Authors: Kumar A, Liput KP, Jonak K, Mazgaj R, Gowda S, MiΔ
ΕΌek M, Waldron KJ, Topf U. | DOI: 10.64898/2026.10.07.757281
Plain English Takeaway
Low-dose zinc supplementation in late life rescues declining ribosomal function, reduces toxic protein aggregation, and improves overall healthspan in model organisms.
Clinical & Deep Dive
Whole-body zinc-to-sulfur levels declined by ~90% during aging in C. elegans. Low-dose ZnCl2 supplementation restored ribosomal protein stoichiometry, induced metallothionein MTL-1, improved thermotolerance, and significantly suppressed protein aggregation in models of polyglutamine and amyloid-beta toxicity.
The Onset of Breathing at Birth Switches Off Regenerative Capacity
Journal: Unknown Journal | Authors: Song X, Cai X, Hegarty S, Speri D, Yasuda M, Donahue R, Stanicka J, Yan T, Mao S, Yang S, Chen J, Zhu J, Kiraly J, Chien C, Kegeles E, Feng D, Stieger K, Yang Z, Zhang Y, Yellen G, Umemori H, Williams P, He Z. | DOI: 10.64898/2026.10.03.756425
Plain English Takeaway
The onset of breathing after birth lowers cellular CO2 and turns off regenerative mTOR signaling, but inhaling CO2 or blocking the kinase SNRK in adults can reactivate regeneration.
Clinical & Deep Dive
Postnatal CO2 exhalation induces intracellular alkalinization and activates the AMPK-family kinase SNRK, which inhibits mTOR and suppresses neural and muscular regenerative capacity; this restriction can be reversed in adult mice via Snrk knockout or CO2 inhalation.