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Four commonly used medications reverse Alzheimer's disease in mice

Researchers have found four commonly used medications that can reverse Alzheimer's disease in mice by addressing the underlying causes of the condition. The study identifies non-steroidal anti-inflammatories and anti-hypertensives as effective treatments, paving the way for early diagnosis and potential therapy.

SourceInstitute for Research in Biomedicine (IRB Barcelona)·JournalGenome Medicine·TypeExperimental study·DateOct 27, 2021

Using AI for mental health assessment

Researchers used machine learning on UK Biobank data to create proxy measures for brain age, intelligence, and neuroticism traits. These indirect measurements strongly correlate with specific diseases or outcomes, offering a potential solution for mental health diagnoses.

SourceGigaScience·JournalGigaScience·TypeComputational simulation/modeling·DateOct 15, 2021

Connective issue: AI learns by doing more with less

A new study from Washington University in St. Louis shows that guided by sparsity, silicon neurons learn to pick the most energy-efficient perturbations and wave patterns, enabling an emergent phenomenon of efficient communication between neurons. This research has significant implications for designing neuromorphic AI systems.

SourceWashington University in St. Louis·JournalFrontiers in Neuroscience·TypeExperimental study·DateAug 3, 2021

Not-so-blind mice can make strategic and acute visual choices

Researchers found that mice can make fine visual discriminations between slightly different lines, suggesting a more complex decision-making process than previously thought. The study's findings highlight the importance of considering non-perceptual biases in understanding animal behavior and decision-making strategies.

SourceRIKEN·JournalProceedings of the National Academy of Sciences·DateJul 28, 2021

How to figure out what you don't know

New research from Cold Spring Harbor Laboratory highlights the importance of model evaluation in neuroscience. By building and comparing several models of neural signaling, researchers found that good predictive power does not necessarily indicate a model's representation of real neural networks.

SourceCold Spring Harbor Laboratory·JournalNature Machine Intelligence·DateOct 26, 2020

Is life a game of chance?

A new study suggests that life in the universe is likely to be common, but only under specific conditions. The research, led by Professor Tomonori Totani, found that complex RNA structures necessary for life to exist may have formed spontaneously in vast regions of space beyond our observable horizon.

SourceUniversity of Tokyo·JournalScientific Reports·DateMar 5, 2020

New model shows how crop rotation helps combat plant pests

A new computational model shows that regular crop rotations switching every other year may not be optimal for maximizing crop yield when threatened by plant pathogens. The analysis identified patterns of crop rotation that maintain soil quality and diminish pathogen load, suggesting a more sustainable approach to agriculture.

SourcePLOS·JournalPLOS Computational Biology·DateJan 16, 2020

Predicting metastasis from primary tumor size

A new mathematical model predicts the presence of undetectable metastases based on primary tumor size, which is associated with a poorer prognosis. The model accurately reflects clinical study data for several cancer types, highlighting the potential dangers of delays in surgery for smaller tumors.

SourcePLOS·JournalPLOS Computational Biology·DateNov 21, 2019

What future do emperor penguins face?

A team of scientists predicts that emperor penguin colonies will decline drastically due to global warming, with 5-6°C temperature increase leading to near-total collapse. Climate models show that sea ice melting will deprive the birds of habitat and food sources, threatening their survival.

SourceCNRS·JournalGlobal Change Biology·DateNov 12, 2019

Smartphones uncover how the world sleeps

A study of worldwide sleep patterns combines math modeling, mobile apps and big data to parse the roles society and biology each play in setting sleep schedules. Cultural pressures can override natural circadian rhythms, with effects showing up most markedly at bedtime.

SourceUniversity of Michigan·JournalScience Advances·DateMay 6, 2016

DNA's double stranded stretch

Researchers used a coupled discrete wormlike chain-Ising model to simulate DNA stretching and confirm two structural transitions at forces of around 65 pN and 135 pN. Beyond 135 pN, DNA strands peel apart into single-stranded DNAs similar to those obtained through thermal denaturation.

SourceSpringer·JournalThe European Physical Journal E·DateOct 25, 2012

Noise down, neuron signals up

A new biologically accurate model of background noise in the nervous system has been developed to explain how noise induces delays in neuron responses. The researchers found that modulating two factors can help neurons encode information more accurately.

SourceSpringer·JournalThe European Physical Journal B·DateAug 15, 2012

Amazing skin gives sharks a push

Researchers found that shark skin's denticles boost swimming speed by creating a turbulent flow pattern around the body, reducing drag and increasing propulsion. The unique arrangement of denticles on the skin surface enhances fluid dynamics, leading to a significant improvement in swimming performance.

SourceThe Company of Biologists·JournalJournal of Experimental Biology·DateFeb 9, 2012

Risk of cancer due to radiation exposure in middle age may be higher than previously estimated

A study reanalyzed Japanese atomic bomb survivor data and found that middle-aged radiation exposure may lead to a higher cancer risk for some tumor types. The model used by the researchers suggests that adult bodies already contain larger numbers of premalignant cells, making promotion effects more likely.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateOct 25, 2010

Caltech scientists help launch the first standard graphical notation for biology

The Systems Biology Graphical Notation (SBGN) provides a standardized visual language for representing biological information, making it easier to exchange complex information. The new standard will benefit systems biologists working on various biochemical processes, including gene regulation, metabolism, and cellular signaling.

SourceCalifornia Institute of Technology·JournalNature Biotechnology·DateAug 11, 2009

Algebra adds value to mathematical biology education

Researchers highlight algebraic models as a crucial tool for undergraduate biologists, allowing them to integrate mathematical modeling into their coursework. These models focus on the logic of network connections, making them accessible to students with limited mathematical background.

SourceVirginia Tech·JournalScience·DateJul 30, 2009

Researchers explore altruism's unexpected ally -- selfishness

A new study suggests that selfish individuals have a strategy called 'Selfish Punisher' that exploits altruists and punishes other selfish individuals, making it a successful approach in Darwinian terms. Altruism can evolve by natural selection as long as its collective advantage outweighs its local disadvantage.

SourceBinghamton University·JournalProceedings of the National Academy of Sciences·DateMay 1, 2008

Why it pays to be choosy

A study published in Nature found that when individuals are choosy about their partners, cooperativeness increases and becomes more stable. This is because individuals with low cooperativeness are penalized by being left by their current partner for a more cooperative one.

SourceUniversity of Bristol·JournalNature·DateJan 9, 2008