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Sex at birth is not always random — mum’s age and genetics can play a part
Should I tell anyone that I suspect misconduct in a paper I’m reviewing?
Class of 2025: five PhD students reveal realigned priorities in wake of COVID and cuts
Pathology-oriented multiplexing enables integrative disease mapping
This ancient mega-predator was built for stealth
Asia’s haze affects ice and weather on the Frozen Continent
To the Moon and quack: Books in brief
Fearful of AI-generated grant proposals, NIH limits scientists to six applications per year
Some critics of the new policy say the cap could hinder researchers in need of funding
U.S. research community says new indirect cost model is still too complicated
Proposed changes to avert huge cuts in reimbursement get pushback at town hall
Why do some moms have more boys than girls—or vice versa? New study provides clues
Researchers find that certain genetic variants and mother’s age may have an impact on the sex of her children
A new kind of telescope is set to search for mysterious fast radio bursts
Radio telescopes usually have giant dishes, but not these all-sky antenna arrays
Russian scientists’ international collaborations to be vetted by security services under new law
Move will have a chilling effect and further isolate the country from the global scientific community, researchers say
Insights into the toxic effects of micro-nano-plastics on the human brain and their relationship with the onset of neurological diseases: A narrative review
The intensive production and use of plastics, poor biodegradability and inadequate recycling have caused excessive and alarming environmental pollution. This has led to the inevitable intake by humans, through different routes, of small plastic particles, the micro and nano-plastics (MNPs) with sizes ranging from nanometers (<1000 nm) to micrometers (from 5 mm to 1 µm). MNPs can cause harmful effects in human tissues and organs, contributing to the early onset of aging and various age-related...
AI-guided patient stratification improves outcomes and efficiency in the AMARANTH Alzheimer's Disease clinical trial
Alzheimer's Disease (AD) drug discovery has been hampered by patient heterogeneity, and the lack of sensitive tools for precise stratification. Here, we demonstrate that our robust and interpretable AI-guided tool (predictive prognostic model, PPM) enhances precision in patient stratification, improving outcomes and decreasing sample size for a AD clinical trial. The AMARANTH trial of lanabecestat, a BACE1 inhibitor, was deemed futile, as treatment did not change cognitive outcomes, despite...
Amyloid-β disrupts APP-regulated protein aggregation and dissociation from recycling endosomal membranes
Secretory proteins aggregate into non-soluble dense-core granules in recycling endosome-like compartments prior to regulated release. By contrast, aberrantly processed, secreted amyloid-β (Aβ) peptides derived from amyloid precursor protein (APP) form pathological extracellular amyloidogenic aggregations in late-stage Alzheimer's disease (AD). By examining living Drosophila prostate-like secondary cells, we show that both APP and Aβ peptides affect normal biogenesis of dense-core granules. These...
One potent gene raises risk of Alzheimer's, Parkinson's and other brain diseases
No abstract
Multi-ancestry genome-wide meta-analysis of 56,241 individuals identifies known and novel cross-population and ancestry-specific associations as novel risk loci for Alzheimer's disease
CONCLUSIONS: Using cross-population GWAS meta-analyses, we identify novel LOAD susceptibility loci in/near LRRC4C and LHX5-AS1, both with known roles in neuronal development, as well as several novel population-unique loci. Reflecting the power of diverse ancestry in GWAS, we detect the SHARPIN locus with only 13.7% of the sample size of the NHW GWAS study (n = 409,589) in which this locus was first observed. Continued expansion into larger multi-ancestry studies will provide even more power for...
Blood oxygenation level-dependent responses in neuromodulatory nuclei and their associations with attention and memory across age groups
Using multi-echo blood oxygenation level-dependent (BOLD) neuroimaging, we examined lifespan differences in three subcortical nuclei important to the neuromodulation of cognition and target sites for early Alzheimer's pathogenesis in the isodendritic core: the locus coeruleus (LC) the major source of noradrenaline, the nucleus basalis of Meynert (NBM) the major source of acetylcholine, and the ventral tegmental area (VTA) the major source of dopamine. Seventy-one participants, from 19 to 86...
Association Between Low Calf Circumference and Incident Sarcopenia in Community-Dwelling Older Adults: A 3-Year Prospective Cohort Study
CONCLUSIONS AND IMPLICATIONS: Within this prospective cohort analysis, low CC emerged as a new independent risk factor for incident sarcopenia over 3 years, with a concomitant escalation in risk observed with severe diminution of CC.
Insights into the toxic effects of micro-nano-plastics on the human brain and their relationship with the onset of neurological diseases: A narrative review
The intensive production and use of plastics, poor biodegradability and inadequate recycling have caused excessive and alarming environmental pollution. This has led to the inevitable intake by humans, through different routes, of small plastic particles, the micro and nano-plastics (MNPs) with sizes ranging from nanometers (<1000 nm) to micrometers (from 5 mm to 1 µm). MNPs can cause harmful effects in human tissues and organs, contributing to the early onset of aging and various age-related...