Synapses on different dendritic domains store distinct types of information
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Epigenetic biomarkers in neurodegenerative diseases: from molecular signatures to therapeutic targets
Epigenetic molecular signatures as biomarkers in neurodegenerative diseases.
Integration of multiomic data is driving the development of cell-type-resolved reference atlases and molecular signatures of neurodegeneration.
Next-generation epigenetic editors are enabling causal interrogation of disease associated marks, revealing disease driving and potentially modifiable epigenetic mechanisms.
Altered chromatin architecture and global epigenomic dysregulation are emerging hallmarks of neurodegenerative diseases, detectable not only in the brain but also in peripheral biofluids.
Peripheral chromatin accessibility and conformation signatures are emerging as clinically actionable biomarkers for early diagnosis, prognosis, and stratification.
Circulating DNA (hydroxy-)methylation profiles offer new avenues for noninvasive biomarker discovery for neurodegenerative diseases, but low yield and sensitivity in detecting neuronal signals remain key challenges. sciencenewshighlights ScienceMission https://sciencemission.com/Epigenetic-biomarkers-in-ND
Inside a White Dwarf, Matter Stops Behaving Normally
What happens when gravity crushes a dead star so completely that atoms themselves are destroyed? Inside a white dwarf, matter enters a state so extreme that the normal rules of physics no longer apply. The familiar categories — solid, liquid, gas — all break down. What holds the star up is not heat, not fusion, not any force you encounter in everyday life. It is a quantum mechanical rule about electrons that most people have never heard of: the Pauli exclusion principle.
In this calming long-form science documentary, we explore what white dwarfs really are, why their matter is millions of times denser than anything on Earth, and how a law governing subatomic particles can hold up an object with the mass of the sun. We break down electron degeneracy pressure in physically intuitive terms, explain why these stellar remnants can cool for trillions of years without ever collapsing, and reveal the Chandrasekhar limit — the critical mass threshold beyond which even quantum mechanics loses its battle against gravity, leading to some of the most violent explosions in the universe.
From the death of sun-like stars to the far future of the cosmos, this is the story of matter pushed to its absolute limit.
Sources and Further Reading:
Chandrasekhar, S. (1931). \
LOL…not my title! Old picture! But fun interview
For this episode, I’m joined by Rick Tumlinson, co-founder of the Space Frontier Foundation and one of the most influential figures in the commercial space industry.
In this episode, we slice the conversation into four categories: the social history of the space movement and how we got here; the business of space and the astropolitics shaping who controls the final frontier; the genetics and ethics of humanity becoming a multi-planetary species; and the deeper philosophy of why leaving Earth isn’t just raw and blind ambition but something closer to destiny (for some people).
Timestamps:
0:00 Social History.
30:19 Business and Astropolitics.
45:20 Genetics and Ethics.
56:02 Philosophical.
Connect with Rick:
LinkedIn: / ricktumlinson.
Website: https://www.ricktumlinson.com.
Book: https://www.amazon.com/Why-Space-Purp?tag=lifeboatfound-20… Info: Spotify: https://open.spotify.com/show/1ILhje5… Apple Podcasts: https://apple.co/3qXL37W Connect: Website: https://ayushprakash.com LinkedIn: / prakash-ayush Instagram: instagram.com/ayushprakashofficial Books: AI for Gen Z: https://www.amazon.com/dp/0981182135?tag=lifeboatfound-20
Podcast Info:
Spotify: https://open.spotify.com/show/1ILhje5…
Apple Podcasts: https://apple.co/3qXL37W
Connect:
Advancements and challenges in inverse lithography technology: a review of artificial intelligence-based approaches
Inverse lithography takes a radically different approach. Instead of starting with the desired circuit pattern and tweaking it to compensate for optical distortions, ILT works backwards. It asks: “What mask pattern would produce the exact shape we want after the light does its distorting work?” It’s like designing a funhouse mirror that makes your reflection look perfectly normal.
What’s particularly elegant are the “model-driven deep learning” approaches, which combine the physics of how light actually behaves with AI’s pattern-recognition abilities. Rather than making the AI learn optics from scratch, these hybrid methods embed the known laws of physics into the learning process, creating solutions that are both fast and physically accurate.
Yang, Y., Liu, K., Gao, Y. et al. Light Sci Appl 14, 250 (2025). https://doi.org/10.1038/s41377-025-01923-w.
Novel Opioid Offers Potent Pain Relief Without Classic Side Effects
Researchers have discovered a novel synthetic opioid that provided potent pain relief in preclinical models without many of the dangerous side effects that limit current opioid therapies.
The compound, N-desethyl-fluornitrazene (DFNZ), produced strong analgesia in rodents without causing respiratory depression, tolerance, or other indicators of potential addiction, reported the researchers, led by Michael Michaelides, PhD, with the National Institute on Drug Abuse (NIDA).
“Opioid pain medications are essential for medical purposes, but can lead to addiction and overdose. Developing a highly effective pain medication without these drawbacks would have enormous public health benefits,” NIDA Director Nora D. Volkow, MD, said in a news release.
A novel mu-opioid receptor agonist showed strong analgesia without respiratory depression, tolerance, or significant addiction signals in animal models.
Frontiers: Background:
Chlorogenic acid (CGA) and taurine are well-known antioxidant compounds reported to reduce skin cellular senescence. However, the biological mechanisms underlying their skin-protective effects remain unclear.
Methods:
In this study, we conducted transcriptome-wide RNA sequencing to profile gene expression changes in human epidermal keratinocytes, melanocytes, and fibroblasts following treatment with CGA, taurine, or their combination. To identify aging-related genes, we integrated evidence from aging databases, perceived-age GWAS, enrichment in aging-related gene ontology and pathways, and drug-gene interaction annotations. Validation of representative genes was performed using quantitative real-time PCR.
Catheter Ablation and Oral Anticoagulation in Atrial Fibrillation
In patients with atrial fibrillation and recent stroke, adding catheter ablation to oral anticoagulation did not significantly reduce recurrent stroke, systemic embolism, death, or hospitalization for heart failure compared to standard therapy.
This randomized clinical trial found no significant difference between the standard-therapy group and the ablation group in the primary composite end point, which included recurrent ischemic stroke, systemic embolism, all-cause death, and hospitalization for heart failure.
The incidence rate of recurrent ischemic stroke in the standard-therapy group was 3.1 per 100 person-years, which was lower than previously reported values.22-24 Conversely, the incidence of recurrent ischemic stroke in the ablation group was 2.5 per 100 person-years, which is consistent with a recent report.25 Although the difference in the incidence rate of recurrent ischemic stroke between the 2 groups was not statistically significant, it remains possible that catheter ablation has a beneficial effect on reducing recurrent ischemic stroke. The lower-than-expected rate of recurrent ischemic stroke in the standard-therapy group likely reflected the appropriate continuation of direct oral anticoagulants in all patients, the exclusion of patients with severe stroke, recent advances in atrial fibrillation treatment, and the comanagement of atrial fibrillation care by neurologists and cardiologists.
All-cause death occurred in 5 patients (1.0 per 100 person-years) in the standard-therapy group and 12 patients (2.8 per 100 person-years) in the ablation group. The mortality rate in both groups was lower than expected, which is likely explained by the exclusion of patients with severe stroke, active cancer, or markedly impaired cardiac function. In most patients who died, more than 1.5 years had elapsed between the catheter ablation procedure and death, suggesting that most deaths were unlikely to be directly related to the catheter ablation procedure itself. In this study, patients in the ablation group more frequently had a history of heart disease, and the incidence rates for major bleeding and cardiovascular death were higher than those for patients in the standard-therapy group, which may be associated with the increased mortality observed in this group.26 However, the underlying reasons for this observation remain unclear.
Lift Off
World shares its vision for the next chapter of proof of human, and the partners, products, and protocol upgrades that accelerate every human in the age of AI.