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Archive for the ‘biological’ category

Dec 19, 2024

New Genetic Link to Autism Identified on X Chromosome

Posted by in categories: biological, genetics, neuroscience

Summary: Researchers identified variants in the DDX53 gene, located on the X chromosome, as contributors to autism spectrum disorder (ASD). These genetic variants, found predominantly in males, provide critical insights into the biological mechanisms behind autism’s male predominance.

The study also uncovered another potential gene, PTCHD1-AS, near DDX53, linked to autism, emphasizing the complexity of ASD’s genetic architecture. This research highlights the importance of the X chromosome in ASD and opens avenues for more precise diagnostics and therapeutics.

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Dec 16, 2024

What bacteria taught me about metaphysics

Posted by in categories: biological, education

Documentary filmmaker Hans Busstra shares with us, with the aid of amazing and scientifically accurate animations of the molecular world, the background story of his journey from imaging the hardcore science of molecular biology to the fundamental insights of metaphysics.

Dec 16, 2024

A ‘Second Tree of Life’ Could Wreak Havoc, Scientists Warn

Posted by in category: biological

Research on so-called mirror cells, which defy fundamental properties of living organisms, should be prohibited as too dangerous, biologists said.

Dec 14, 2024

Artificial Intelligence for Cell Analysis in Biologics Development

Posted by in categories: biological, mapping, robotics/AI

There’s No Turning Back

Not long ago, solving the crystal structure of a protein required an entire PhD.

Growing crystals, collecting X-ray diffraction data, and interpreting electron density maps often took years of optimization and expensive instruments. Even then, solving all protein structures was a challenge, further compounding the “protein folding problem” in biology.

Dec 14, 2024

Creating ‘Mirror Life’ Could Be Disastrous, Scientists Warn

Posted by in categories: bioengineering, biological

Breakthroughs in synthetic biology could create mirror versions of natural molecules, with devastating consequences for life on Earth.

By Simon Makin

Dec 14, 2024

100-million-year-old Ancient Sea Lizards Killed And Ate Each Other

Posted by in categories: biological, evolution

Mosasaurs are extinct marine reptiles that dominated Earth’s oceans during the Late Cretaceous period.


Mosasaurs, extinct marine reptiles that dominated Earth’s oceans during the Late Cretaceous period, have fascinated scientists since their discovery in 1766 near Maastricht, Netherlands. These formidable lizards are iconic examples of macroevolution, showcasing the emergence of entirely new animal groups.

Michael Polcyn, a paleontologist from Utrecht University, has presented the most comprehensive study yet on their early evolution, ecology, and feeding biology. His findings, aided by advanced imaging technologies, provide fresh insights into the origins, relationships, and behaviors of these ancient giants.

Dec 14, 2024

Physicists introduce approach to control wave patterns via fluid flows

Posted by in categories: biological, chemistry, education, physics

The reliable control of traveling waves emerging from the coupling of oscillations and diffusion in physical, chemical and biological systems is a long-standing challenge within the physics community. Effective approaches to control these waves help to improve the present understanding of reaction-diffusion systems and their underlying dynamics.

Researchers at Université libre de Bruxelles (ULB) and Université de Rennes recently demonstrated a promising approach to control chemical waves in a type of known as hyperbolic flow. Their experimental methods, outlined in Physical Review Letters recently, entail the control of chemical waves via the stretching and compression of fluids.

“At a summer school in Corsica, discussions between the Brussels and Rennes team triggered the curiosity to see how chemical waves studied at ULB in Brussels would behave in hyperbolic flows analyzed in Rennes,” Anne De Wit, senior author of the paper, told Phys.org. “The primary objective was to see how a non-trivial flow would influence the dynamics of waves.”

Dec 13, 2024

Scientists achieve nuclear spin coherence in levitating microparticles

Posted by in categories: biological, computing, quantum physics

A new study in Physical Review Letters demonstrates the levitation of a microparticle using nuclear magnetic resonance (NMR), having potential implications from biology to quantum computing.

NMR is a spectroscopic technique commonly used to analyze various materials based on how the respond to external magnetic fields. This provides information about the internal structure, dynamics, and environment of the material.

One of the main challenges with NMR is using it on small objects to control the quantum properties of levitating microparticles.

Dec 13, 2024

Mindscape 298 | Jeff Lichtman on the Wiring Diagram of the Brain

Posted by in categories: biological, mapping, space

Patreon: https://www.patreon.com/seanmcarroll.
Blog post with audio player, show notes, and transcript: https://www.preposterousuniverse.com/podcast/2024/12/09/298-…the-brain/

The number of neurons in the human brain is comparable to the number of stars in the Milky Way galaxy. Unlike the stars, however, in the case of neurons the real action is in how they are directly connected to each other: receiving signals over synapses via their dendrites, and when appropriately triggered, sending signals down the axon to other neurons (glossing over some complications). So a major step in understanding the brain is to map its wiring diagram, or connectome: the complete map of those connections. For a human brain that’s an intimidatingly complex challenge, but important advances have been made on tinier brains. We talk with Jeff Lichtman, a leader in brain mapping, to gauge the current state of progress and what it implies.

Continue reading “Mindscape 298 | Jeff Lichtman on the Wiring Diagram of the Brain” »

Dec 13, 2024

Dwarf planet Ceres could be rich in organics, defunct spacecraft data reveals

Posted by in categories: biological, space

These findings dispute the former theory, suggesting the organic materials come from within the dwarf planet or are “endogenous.”

“The significance of this discovery lies in the fact that, if these are endogenous materials, it would confirm the existence of internal energy sources that could support biological processes,” team leader and Instituto de Astrofísica de Andalucía researcher Juan Luis Rizos said in a statement.

To investigate the organic compounds found on Ceres, the team used a new approach that examined the dwarf planet’s surface and the distribution of organic matter at the highest possible resolution.

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