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Archive for the ‘biotech/medical’ category: Page 46

Dec 7, 2024

A sickle cell first: Base editing, a new form of gene therapy, leaves patient feeling ‘more than fine’

Posted by in category: biotech/medical

Though he doesn’t remember it, Branden Baptiste had his first sickle cell crisis at age 2. Through elementary school, he was in and out of the hospital with pain episodes, not knowing why. As he got older, he learned he had sickle cell disease. His red blood cells were forming sickle shapes and getting stuck in his blood stream, preventing oxygen from reaching his tissues.

“Sickle cell disease has a broad spectrum of severity, and the severity and frequency of complications can wax and wane,” says Matthew Heeney, MD, Branden’s long-time hematologist at Boston Children’s Hospital.

Continue reading “A sickle cell first: Base editing, a new form of gene therapy, leaves patient feeling ‘more than fine’” »

Dec 7, 2024

Straining a material’s atomic arrangement may make for cleaner, smarter devices

Posted by in categories: biotech/medical, computing, quantum physics

What’s the best way to precisely manipulate a material’s properties to the desired state? It may be straining the material’s atomic arrangement, according to a team led by researchers at Penn State. The team discovered that “atomic spray painting” of potassium niobate, a material used in advanced electronics, could tune the resulting thin films with exquisite control.

The finding, published in Advanced Materials (“Colossal Strain Tuning of Ferroelectric Transitions in KNbO 3 Thin Films”), could drive environmentally friendly advancements in consumer electronics, medical devices and quantum computing, the researchers said.

The process, called strain tuning, alters a material’s properties by stretching or compressing its atomic unit cell, which is the repeating motif of atoms that builds up its crystal structure. The researchers use molecular beam epitaxy (MBE), a technique that involves depositing a layer of atoms on a substrate to form a thin film. In this case, they produced a thin film of strain-tuned potassium niobate.

Dec 7, 2024

Decoding protein interactions to better understand how mutations contribute to disease

Posted by in categories: biotech/medical, chemistry, nanotechnology

Investigating how proteins interact is key to understanding how cells work and communicate. In a new study published in Nature Communications, FMI researchers have provided key insights into how protein interactions are governed and how mutations influence cellular functions.

Proteins are the molecular machines of life, performing tasks ranging from driving to orchestrating cell communication. For these tasks, proteins must bind to the right partners with precision, avoiding mispairings that could disrupt cellular processes and lead to disease.

Scientists have long been curious about how changes in the —the building blocks of proteins—can alter a protein’s binding capabilities. To investigate this question, researchers in the Diss lab analyzed the effects of all possible mutations in a single protein across its with an entire family of partner proteins. They focused on a protein called JUN, which plays a key role in DNA binding and cellular communication.

Dec 7, 2024

World’s First “Molecular Movie”: Witness DNA Becoming Life’s Blueprint in Real-Time

Posted by in categories: biotech/medical, nanotechnology

Using an innovative approach, EMBL scientists uncovered key interactions between molecular machines, potentially opening new avenues for drug development.

Choosing a film for a movie night is always a battle. Now imagine if you could pick one that provided a window into some of the most fundamental biological processes that keep us alive. For the first time ever, researchers have captured a real-time molecular movie to show how two essential cellular processes – transcription and translation – interact with each other in bacteria.

Continue reading “World’s First ‘Molecular Movie’: Witness DNA Becoming Life’s Blueprint in Real-Time” »

Dec 7, 2024

Nuclear Expression of a Mitochondrial Gene in Mice

Posted by in categories: biotech/medical, genetics, life extension, nuclear energy

Scientists from the Longevity Research Institute (LRI), which was formed by the merger of SENS Research Foundation and Lifespan.io, have achieved expression of an essential mitochondrial gene in the nucleus and proper functioning of the protein. This could pave the way for curing diseases caused by mitochondrial mutations [1].

The fragile mitochondrial DNA

The prevailing scientific consensus is that mitochondria were once independent microorganisms that entered a symbiotic relationship with larger cells. This duo gave rise to eukaryotic cells: the building blocks of all multicellular life. Without that fateful “marriage,” complex life would not exist, as mitochondria provide cells with essential energy via oxidative phosphorylation.

Dec 7, 2024

Estrous rhythm found crucial for optimizing breast cancer therapy

Posted by in category: biotech/medical

The Netherlands Cancer Institute has found that the estrous cycle stage significantly influences mammary tumors’ sensitivity to chemotherapy. In mouse models of breast cancer, treatment initiated during the diestrus stage resulted in reduced responses to chemotherapy compared to initiation during the estrus stage.

The human body contains internal timekeeping clocks to adapt to environmental changes, including infradian rhythms like the . Fluctuating during these cycles regulate physiological adaptations, which may impact responses to therapies.

Understanding factors that contribute to the heterogeneity in responses is crucial for improving treatment outcomes in .

Dec 7, 2024

A greener, cleaner way to extract cobalt from ‘junk’ materials

Posted by in categories: biotech/medical, mobile phones

Siddarth Kara’s bestseller, “Cobalt Red: How the Blood of Congo Powers Our Lives,” focuses on problems surrounding the sourcing of cobalt, a critical component of lithium-ion batteries that power many technologies central to modern life, from mobile phones and pacemakers to electric vehicles.

“Perhaps many of us have read how are vital for energy storage technologies,” says Eric Schelter, the Hirschmann-Makineni Professor of Chemistry at the University of Pennsylvania. “But how materials that make up such batteries are sourced can be concerning and problematic, both ethically and environmentally.”

Schelter says that mining in the Democratic Republic of Congo, which supplies about 70% of the world’s cobalt, raises concerns due to environmental degradation and unsafe working conditions, and that large-scale mining disrupts ecosystems and can contaminate , leaving lasting environmental damage. In addition, he notes that a looming cobalt shortage threatens to strain as demand for battery technologies continues to grow.

Dec 7, 2024

New bioprinter 3D prints human tissue 10x faster

Posted by in categories: bioprinting, biotech/medical

HITS-Bio is the first tool to bioprint directly on a wound.

Dec 7, 2024

From Dictation to Automation: The Rise of AI Scribes in Healthcare

Posted by in categories: biotech/medical, health, information science, robotics/AI

Despite technological advances like electronic health records (EHRs) and dictation tools, the administrative load on healthcare providers has only grown, often overshadowing the time and energy dedicated to direct patient care. This escalation in clerical tasks is a major contributor to physician burnout and dissatisfaction, affecting not only the well-being of providers but also the quality of care they deliver.

During consultations, the focus on documentation can detract from meaningful patient interactions, resulting in fragmented, rushed, and sometimes impersonal communication. The need for a solution that both streamlines documentation and restores the patient-centred nature of healthcare has never been more pressing. This is where AI-powered medical scribes come into play, offering a promising path from traditional dictation to fully automated, integrated documentation support.

AI medical scribe software utilises advanced artificial intelligence and machine learning to transcribe, in real time, entire patient-physician consultations without the need for traditional audio recordings. Leveraging sophisticated speech recognition and natural-language processing (NLP) algorithms, AI scribes are capable of interpreting and processing complex medical conversations with impressive accuracy. These systems can intelligently filter out non-essential dialogue, such as greetings and small talk, to create a streamlined and detailed clinical note.

Dec 7, 2024

Computer modeling shows close encounters between distant DNA regions cause bursts of gene activity

Posted by in categories: biotech/medical, computing

Researchers at Kyushu University have revealed how spatial distance between specific regions of DNA is linked to bursts of gene activity. Using advanced cell imaging techniques and computer modeling, the researchers showed that the folding and movement of DNA, as well as the accumulation of certain proteins, changes depending on whether a gene is active or inactive.

The study, published on December 6 in Science Advances, sheds insight into the complicated world of gene expression and could lead to new therapeutic techniques for diseases caused by improper regulation of gene expression.

Gene expression is a fundamental process that occurs within cells, with two main phases: transcription, where DNA is copied into RNA, and translation, where the RNA is used to make proteins. For each cell to carry out its specific functions in the body, or to respond to changing conditions, the right amount of a protein must be produced at the right time, meaning genes must be carefully switched on and off.

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