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Archive for the ‘biotech/medical’ category: Page 881

Oct 7, 2022

Light-based therapy weakens antibiotic-resistant bacteria

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

Antibiotics are standard treatments for fighting dangerous bacterial infections. Yet the number of bacteria developing a resistance to antibiotics is increasing. Researchers from Texas A&M University and the University of São Paulo are overcoming this resistance with light.

The researchers tailored antimicrobial (aPDT)—a chemical reaction triggered by visible light—for use on strains. Results showed the treatment weakened to where low doses of current antibiotics could effectively eliminate them.

“Using aPDT in combination with antibiotics creates a synergy of interaction working together for a solution,” said Vladislav Yakovlev, University Professor in the Department of Biomedical Engineering at Texas A&M and co-director of the project. “It’s a step in the right direction against resistant bacteria.”

Oct 7, 2022

Superhuman: The Superhuman show by Freethink is an original series about the amazing advances in medical innovation that are making the present look more like a sci-fi depiction of the future

Posted by in categories: biotech/medical, innovation

Join us as we meet the engineers, entrepreneurs, doctors and patients who are giving people a new lease on life today, while building our future of tomorrow.

Oct 7, 2022

Mapping Human Brain Development

Posted by in categories: biotech/medical, genetics, neuroscience

Summary: Brain organoids are helping researchers map the molecular, genetic, and structural changes that occur during brain development.

Source: ETH Zurich.

The human brain is probably the most complex organ in the entire living world and has long been an object of fascination for researchers. However, studying the brain, and especially the genes and molecular switches that regulate and direct its development, is no easy task.

Oct 7, 2022

Scientists Have Discovered a New Set of Blood Groups

Posted by in category: biotech/medical

The ‘Er’ grouping could help doctors identify and treat some rare cases of blood incompatibility, including between pregnant mothers and fetuses.

Oct 7, 2022

Discovery broadens scope of use of CRISPR gene editing

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

A team of researchers at Northwestern University has devised a new platform for gene editing that could inform the future application of a near-limitless library of CRISPR-based therapeutics.

Using chemical design and synthesis, the team brought together the Nobel-prize winning technology with therapeutic technology born in their own lab to overcome a critical limitation of CRISPR. Specifically, the groundbreaking work provides a system to deliver the cargo required for generating the gene editing machine known as CRISPR-Cas9. The team developed a way to transform the Cas-9 protein into a spherical nucleic acid (SNA) and load it with critical components as required to access a broad range of tissue and cell types, as well as the intracellular compartments required for gene editing.

The research, published today in a paper titled, “CRISPR Spherical Nucleic Acids,” in the publication Journal of the American Chemical Society, and shows how CRISPR SNAs can be delivered across the cell membrane and into the nucleus while also retaining bioactivity and gene editing capabilities.

Oct 7, 2022

TransVision 2022 Madrid

Posted by in categories: biotech/medical, cryonics, life extension

https://www.youtube.com/watch?v=lXTiqZGtnvc&list=PLr-AM3…mp;index=2

Today there might not be a cure to save your life. What if the cure were available tomorrow? Biostasis (cryonics) is a possibility for keeping you around long enough for the cure.

Oct 7, 2022

New Insights Into Eye Diseases: 3D Map Reveals DNA Organization Within Human Retina Cells

Posted by in categories: biotech/medical, genetics

NIH researchers reveal new insights on how genetic architecture determines gene expression, tissue-specific function, and disease phenotype in blinding diseases.

National Eye Institute (NEI) scientists have mapped the organization of human retinal cell chromatin. These are the fibers that package 3 billion nucleotide-long DNA

Continue reading “New Insights Into Eye Diseases: 3D Map Reveals DNA Organization Within Human Retina Cells” »

Oct 7, 2022

New RNA Tool Can Illuminate Brain Circuits and Edit Specific Cells

Posted by in categories: biotech/medical, neuroscience

Editing technology is precise and broadly applicable to all tissues and species.

Scientists at Duke University have developed an RNA

Ribonucleic acid (RNA) is a polymeric molecule similar to DNA that is essential in various biological roles in coding, decoding, regulation and expression of genes. Both are nucleic acids, but unlike DNA, RNA is single-stranded. An RNA strand has a backbone made of alternating sugar (ribose) and phosphate groups. Attached to each sugar is one of four bases—adenine (A), uracil (U), cytosine ©, or guanine (G). Different types of RNA exist in the cell: messenger RNA (mRNA), ribosomal RNA (rRNA), and transfer RNA (tRNA).

Oct 7, 2022

Neuromaps: A One-Stop-Shop for Brain Maps

Posted by in categories: biotech/medical, neuroscience

No one imaging mode can catch everything that’s going on inside the brain, since it is such a complex organ. Multiple “brain maps” have emerged over the years, with each focusing on different brain processes, from metabolism to cognitive function. These maps are indeed important, but using them in isolation limits the discoveries scientists can make from them.

More than forty existing brain maps have now been collected in one place by a team from The Neuro. Called neuromaps, the database will help researchers find correlations between patterns across different brain regions, modalities, spatial scales, and brain functions. To assist researchers in differentiating between a relevant association and a random pattern, it offers a standardized space to see each map in comparison to one another and evaluates the statistical significance of these comparisons. Additionally, the neuromaps database helps standardize the code across maps, to improve reproducibility of results.

Oct 7, 2022

James Kirkland: Senolytics have a 20% chance of success

Posted by in categories: biotech/medical, life extension, neuroscience

One of the hallmarks of aging, cellular senescence is what happens when aging cells do not die in the usual way (a process known as apoptosis) and start to accumulate in our bodies. The accumulation of these “senescent” cells is implicated in diseases including dementias, atherosclerosis, cancers, diabetes and arthritis. But senescence is not just part of the aging process – it tends to occur in individuals who develop frailty and multiple illnesses, and this can occur at any point during life.

In 2015, a team of researchers at the Mayo Clinic, led by Dr James L Kirkland, published a seminal paper in Aging Cell that introduced a new class of drugs called senolytics. Based on the idea that removing senescent cells may enhance human healthspan, these drugs were identified based on their ability to selectively target and eliminate those cells.

Longevity. Technology: Since the discovery of the first senolytics, hundreds of others have since been identified or created, and senotherapeutics is now one of the hottest areas in longevity, with a host of clinical trials under way and companies pursuing senolytic therapies for a range of age-related conditions. But what does the man who started it all think about the therapeutic field he helped create? In the first of two articles, we bring you Dr Kirkland’s unique perspective on the world of senolytics.

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