Scientists uncover shared biology behind profound fatigue in five major illnesses
Peer-Reviewed Publication
Updates every hour. Last Updated: 30-Oct-2026 16:16 ET (30-Oct-2026 20:16 GMT/UTC)
New research reveals a shared biology behind profound fatigue in five major illnesses - including long Covid and PTSD.
A new paper shows striking biological similarities between five major illnesses which until now have largely been viewed as separate disorders.
The findings suggest that chronic fatigue syndrome (also known as ME), long Covid, post-traumatic stress disorder (PTSD), rheumatoid arthritis and multiple sclerosis (MS) may be driven by common underlying mechanisms.
This is despite the conditions being triggered by different events - ranging from viral infections to psychological trauma or autoimmune responses.
Roughly 10 percent of the American population lives with a neurodevelopmental condition, including autism spectrum disorders, ADHD, learning disorders, auditory and visual processing disorders, and more. Salk researchers uncover link between severe maternal illness during pregnancy and elevated risk of neurodevelopmental disorders in mice. Findings show maternal immune activation, as occurs during illness, leads to widespread epigenetic changes and altered frontal cortex in offspring.
Researchers have discovered that mammalian genes can combine to make chimeric mRNAs, which carry the instructions to produce previously unknown, functional proteins.The first chimeric mRNA they investigated, in mice, has an important role in modulating inflammatory responses. Findings expand understanding of biology, genome and add potentially thousands of new targets for drug discovery.
Researchers at Helmholtz Munich and the Technical University of Munich (TUM) have developed Synthetic Transfer Vehicles (STVs), an entirely new class of RNA transporters. To do so, they combined naturally occurring protein building blocks with synthetic protein structures designed using generative AI. Systematic screening identified STV-C8 as the most efficient candidate: In cell culture, it transports RNA far more efficiently than the lipid nanoparticles tested and can be adapted to different RNA cargoes and target cells. In animal models, the team demonstrated that the system also works in a living organism.
Corneal disorders remain a leading cause of visual impairment worldwide, with limited treatment options for many conditions including severe dry eye disease, corneal ulcers, scarring, and dystrophies. Exosomes, nanoscale extracellular vesicles carrying diverse bioactive molecules, have emerged as a promising therapeutic modality for corneal disease. This comprehensive review examines the current landscape and future outlook of exosome-based therapies in ophthalmology, focusing on corneal disorders. The authors summarize the fundamental biology of corneal exosomes and their roles in maintaining corneal homeostasis and driving disease processes. Robust preclinical evidence demonstrates that exosomes can promote epithelial wound healing, modulate inflammation and fibrosis, and support tissue regeneration across major corneal conditions. Emerging clinical studies are beginning to assess safety and feasibility in human patients. The review also addresses critical aspects of exosome isolation, characterization, engineering, and delivery strategies relevant for clinical translation. Despite encouraging findings, major challenges remain in standardizing manufacturing and quality control, ensuring long-term safety, and achieving consistent therapeutic efficacy. Future research should prioritize optimization of exosome production and delivery, rational engineering to enhance performance, and exploration of exosomes as diagnostic biomarkers, collectively paving the way for transforming corneal disease management.