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Category: biotech/medical – Page 743

Elon Musk is exploring the possibility of upgrading the human brain to allow humans to compete with sentient AI through ‘a brain computer interface’ created by his company Neuralink. “I created [Neuralink] specifically to address the AI symbiosis problem, which I think is an existential threat,” says Musk.

While Neuralink has just received FDA approval to start clinical trials in humans (intended to empower those with paralysis), only time will tell whether this technology will succeed in augmenting human intelligence as Musk first intended. But the use of AI to augment human intelligence brings up some interesting ethical questions as to which tools are acceptable (a subject to be discussed… More.

Chat GPT may have an effect on critical thinking. Also early adopters may be at an advantage with GPT. Study with students.

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“A new way for artists, record producers, and streaming services to delight listeners with new music.”

Predicting hit music is no easy feat. Popular music streaming services give people a fresh mixtape of music daily or weekly.

Spotify does this with its “Discover Weekly” feature that gives users a playlist of 30 new songs every Monday. Another subscription-based music service Pandora introduces new music using “Personalized Soundtracks” after an analysis of 450 attributes via its Music Genome Project.

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A new study shows how space travel may modify the gene expression in white blood cells (WBCs), which fight infections.

Beyond Earth, a less gravity environment poses a significant risk to the health of astronauts, particularly during longer-duration missions.

Understanding how the human body reacts to the space environment is crucial for the long term and designing countermeasures to protect astronauts’ health.

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Continue reading “The Insane Engineering of MRI Machines” | >

The Y chromosome is the smallest chromosome, and holds the least amount of genes, but scientists are still learning about all of its biological functions. Research has shown that many men start to lose Y chromosomes in blood cells as they get older, and this phenomenon has been linked to some disorders including heart disease and now, cancer. Some studies have suggested that the loss of the Y chromosome may help explain why men tend to die at slightly younger ages compared to women, or why there are sex differences in some types of cancer… Two new studies reported in Nature have explored the link between cancer and the loss of the Y chromosome.

One study used a mouse model to show that a specific gene on the Y chromosome known as KDM5D increases the chance that some types of colorectal cancer will metastasize. The other research report showed that when some cells lose the Y chromosome, bladder tumors are better at evading the immune system, and the risk of aggressive bladder cancer increases.

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In a recent study published in the European Journal of Nutrition, scientists investigate the association between diet and cardiometabolic multimorbidity risk among British men between the ages of 60 and 79. To this end, consuming more seafood and fish was linked to a lower risk of first cardiometabolic disease transitioning to cardiometabolic multimorbidity.

Study: Prospective associations between diet quality, dietary components, and risk of cardiometabolic multimorbidity in older British men. Image Credit: fizkes / Shutterstock.com.

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People who owned black-and-white television sets until the 1980s didn’t know what they were missing until they got a color TV. A similar switch could happen in the world of genomics as researchers at the Berlin Institute of Medical Systems Biology of the Max Delbrück Center (MDC-BIMSB) have developed a technique called Genome Architecture Mapping (“GAM”) to peer into the genome and see it in glorious technicolor. GAM reveals information about the genome’s spatial architecture that is invisible to scientists using solely Hi-C, a workhorse tool developed in 2009 to study DNA interactions, reports a new study in Nature Methods by the Pombo lab.

“With a black-and-white TV, you can see the shapes but everything looks gray,” says Professor Ana Pombo, a and head of the Epigenetic Regulation and Chromatin Architecture lab. “But if you have a color TV and look at flowers, you realize that they are red, yellow and white and we were unaware of it. Similarly, there’s also information in the way the genome is folded in three-dimensions that we have not been aware of.”

Understanding DNA organization can reveal the basis of health and disease. Our cells pack a 2-meter-long genome into a roughly 10 micrometer-diameter nucleus. The packaging is done precisely so that regulatory DNA comes in contact with the right genes at the right times and turns them on and off. Changes to the three-dimensional configuration can disrupt this process and cause disease.

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Continue reading “Polyamines (Including Spermidine) Extend Lifespan: What’s My Data?” | >

Insects, with their remarkable ability to undergo complete metamorphosis, have long fascinated scientists seeking to understand the underlying genetic mechanisms governing this transformative process.

Now, a recent study conducted by the Institute for Evolutionary Biology (IBE, CSIC-UPF) and the IRB Barcelona has shed light on the crucial role of three genes – Chinmo, Br-C and E93 – in orchestrating the stages of insect development. Published in eLife, this research provides valuable insights into the evolutionary origins of metamorphosis and sheds new light on the role of these genes in growth, development and cancer regulation [1].

Longevity. Technology: Chinmo might sound like a Pokémon character, but the truth is much more interesting. Conserved throughout the evolution of insects, scientists think it, and the more conventionally-named Br-C and E93, could play a key role in the evolution of metamorphosis, acting as the hands of the biological clock in insects. A maggot is radically different from the fly into which it changes – could understanding and leveraging the biology involved one day allow us to change cultured skin cells into replacement organs or to stop tumors in their early stages of formation? No, Dr Seth Brundle, you can buzz off.

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