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A hidden map in your nose could explain how smell works

2 weeks ago
Scientists have finally cracked one of the biggest mysteries in the senses: how smell is organized. By mapping millions of neurons in mice, researchers discovered that smell receptors in the nose aren’t random at all—they’re arranged in neat, overlapping stripes based on receptor type, forming a hidden structure scientists never knew existed. Even more striking, this layout mirrors how smell information is mapped in the brain, revealing a coordinated system from nose to neural circuits.

First-ever 3D view shows how killer T cells destroy cancer

2 weeks ago
The body’s “killer” T cells don’t just attack—they strike with astonishing precision, forming a tiny, highly organized contact zone that lets them destroy dangerous cells without harming their neighbors. Now, scientists have captured this process in unprecedented detail, revealing a hidden world of molecular choreography.

The role of ultrasound in addressing neurodegenerative diseases: A review of mechanisms, applications, and challenges

2 weeks 1 day ago
With the aging of the global population, neurodegenerative diseases have become a major public health challenge. Currently, there are many limitations in the traditional treatment of neurodegenerative diseases, such as medicine, deep brain stimulation, transcranial magnetic stimulation, and transcranial direct current stimulation, including the inability to penetrate the blood-brain barrier (BBB) accurately and challenges in achieving precise and quantitative control during the treatment...
Yanqiu Zhu

Serious side effects of Alzheimer's immunotherapy demand scrutiny

2 weeks 1 day ago
Monoclonal antibodies targeting amyloid-β, i.e., lecanemab and donanemab, have recently been approved for treating early Alzheimer's disease (AD). Though these antibodies are by many considered milestones in AD therapy, clinical approvals have been inconsistent due to ongoing debates over their clinical benefit and safety. The reported cognitive decline slowing is modest and often below the thresholds for clinically significant differences on outcome scales. Moreover, these therapies are linked...
Poul F Høilund-Carlsen

Tiny Titans, big promise: Nanotechnology and microRNA in the fight against Alzheimer's disease

2 weeks 1 day ago
Alzheimer's disease (AD) remains the most common neurodegenerative disorder. It is driven by complex molecular dysfunctions that includes amyloid aggregation, tau pathology, and neuroinflammation. It leads to cognitive deficits and memory loss in elderly people. Current treatments offer limited symptomatic relief. Hence, there is urgent need for innovative therapeutics and diagnostic approaches. Among emerging therapeutic targets, microRNAs (miRNAs) have pivotal role in regulating genes linked...
Bhavya Nakum

The role of ultrasound in addressing neurodegenerative diseases: A review of mechanisms, applications, and challenges

2 weeks 1 day ago
With the aging of the global population, neurodegenerative diseases have become a major public health challenge. Currently, there are many limitations in the traditional treatment of neurodegenerative diseases, such as medicine, deep brain stimulation, transcranial magnetic stimulation, and transcranial direct current stimulation, including the inability to penetrate the blood-brain barrier (BBB) accurately and challenges in achieving precise and quantitative control during the treatment...
Yanqiu Zhu

Uridine restores oocyte quality and mitigates female reproductive aging by inhibition of ferroptosis in mice

2 weeks 1 day ago
Advanced maternal age is a key factor in female infertility, primarily due to declines in ovarian reserve and oocyte quality. However, the metabolic mechanisms underlying reproductive aging remain unclear. Here, we show that uridine levels in the plasma and ovaries of aged mice are significantly reduced compared with young controls. Building on this, we find that uridine supplementation significantly improves meiotic maturation, fertilization, and early embryonic development of aged oocytes,...
Jingyue Chen

Aging-associated modulation of UFMylation impairs proteostasis in C. elegans

2 weeks 1 day ago
The attachment of Post-Translational Modifications (PTMs) to proteins regulates their activities and stability. Here we utilized the nematode Caenorhabditis elegans to test whether UFMylation, a PTM which affects key biological functions, regulate aging and protein homeostasis (proteostasis). We find that lowering UFMylation extends lifespan and mitigates the toxicity of aggregation-prone proteins that underlie the development of neurodegenerative disorders in humans. Mass spectrometric analysis...
Reut Bruck-Haimson

Multimodal data analysis reveals asynchronous aging dynamics across female reproductive organs

2 weeks 1 day ago
Female reproductive aging has systemic health implications, yet tissue-level dynamics remain poorly understood. Here we integrate deep learning analysis of 1,112 histology images with RNA sequencing from 659 samples across seven female reproductive organs in donors aged 20-70 years. We uncover asynchronous trajectories: the ovary ages gradually, whereas the uterus shows an abrupt molecular and morphological shift around menopause. This uterine transition is independently supported by plasma...
Oleksandra Soldatkina