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What would it be like if your neurons could regenerate?

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  What If Neurons Could Regenerate? Imagine a world where your brain could heal and renew itself like your skin or liver. How would that change your life? Would you still be the same person, or would you evolve into someone entirely different? Let’s dive into this mind-bending idea together. The top image shows fluorescently labeled cells in the spinal cord of a zebrafish recovering one week after an injury, and the bottom image shows recovery four weeks after an injury. Researchers at Washington University School of Medicine in St. Louis describe the dramatic changes within nerve cells that make regeneration possible. Such findings could inspire the development of new therapies for spinal cord injuries in people. (Image: Mokalled lab) A New Era for Memory and Learning Think about the last time you struggled to remember something important. What if your brain had the ability to replace lost or damaged neurons? Learning could become faster and more efficient, making knowledge ret...
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New 'acoustic metamaterial' cancels sound

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The mathematically designed, 3D-printed acoustic metamaterial is shaped in such a way that it sends incoming sounds back to where they came from, Ghaffarivardavagh and Zhang say. Inside the outer ring, a helical pattern interferes with sounds, blocking them from transmitting through the open center while preserving air's ability to flow through. Boston University researchers, Xin Zhang, a professor at the College of Engineering, and Reza Ghaffarivardavagh, a Ph.D. student in the Department of Mechanical Engineering, released a paper in  Physical Review B  demonstrating it's possible to silence noise using an open, ringlike structure, created to mathematically perfect specifications, for cutting out sounds while maintaining airflow. "Today's sound barriers are literally thick heavy walls," says Ghaffarivardavagh. Although noise-mitigating barricades, called sound baffles, can help drown out the whoosh of rush hour traffic or contain the symphony of music withi...
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Sweetener saccharin shows surprising power against antibiotic resistance

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Abstract Artificial sweeteners like saccharin, commonly used as sugar substitutes, are revealing surprising capabilities in combating antibiotic-resistant bacteria. Recent research indicates that saccharin and similar compounds, such as acesulfame-K and sucralose, can inhibit the growth of multidrug-resistant pathogens like Acinetobacter baumannii and Pseudomonas aeruginosa . These sweeteners disrupt bacterial biofilm formation and motility, and they can enhance the effectiveness of existing antibiotics by increasing bacterial membrane permeability, leading to cell lysis. Notably, acesulfame-K demonstrated potent antimicrobial activity in ex vivo wound models, suggesting potential therapeutic applications. ​ However, there's a complex side to this narrative. Studies have shown that artificial sweeteners can also promote the spread of antibiotic resistance genes. They do this by increasing bacterial cell membrane permeability and stimulating the expression of genes involved in D...
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