Archive for the ‘biotech/medical’ category: Page 2129
Feb 4, 2017
Biomimetic Artificial Skin Layer with Significant Temperature Sensitivity (VIDEO)
Posted by Klaus Baldauf in categories: biotech/medical, cyborgs
Researchers at the California Institute of Technology (Caltech) and the Swiss Federal Institute of Technology have developed a material that can sense changes in temperature with more sensitivity than human skin. The team discovered that flexible films made from pectin demonstrate an electrical response, caused by the release of calcium ions, following very small changes in temperature. Increased temperature causes the pectin molecules to “unzip”, allowing the release and movement of calcium ions.
Feb 3, 2017
An Antibiotic May Stop Growth of Deadly Brain Cancer Trending
Posted by Karen Hurst in categories: biotech/medical, neuroscience
Scientists on the quest to offer more hope for glioblastoma patients may have found a way to stop the growth of the deadly brain tumor. The discovery targets the genes that sustain the tumor growth past the early stages with the drug mithramycin, which may be more effective than the current chemotherapy treatments.
Glioblastoma is the most common and deadly form of primary brain cancer. In glioblastoma, malignant glial cells form vast networks of tendrils throughout the brain, making it nearly impossible to surgically remove all the cancerous tissues. Dubbed as the “octopus tumor,” the tumor can evade even the most aggressive surgeries, chemotherapies, and radiotherapies, leaving patients with a five-year survival rate of less than 10 percent. Patients are in desperate need of better alternatives or supplementary treatments to beat this notoriously deadly cancer.
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Feb 3, 2017
The World’s Best Doctors Aren’t Earning PHDs — They’re Being Programmed
Posted by Shane Hinshaw in categories: biotech/medical, health
Feb 3, 2017
This could be revolutionary
Posted by Bryan Gatton in categories: biotech/medical, life extension
Feb 3, 2017
Senescent cells accumulate in the body as we age and poison nearby healthy cells making them senescent or even cancerous!
Posted by Steve Hill in categories: biotech/medical, life extension
You can help us find ways to remove them and stay healthy!
Visit us at: https://www.lifespan.io/campaigns/cellage-targeting-senescen…c-biology/
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Feb 2, 2017
Scientists build world’s tiniest hammer to bang on brain cells
Posted by Karen Hurst in categories: biotech/medical, nanotechnology, neuroscience
Way cool.
Feb. 2 (UPI) — Scientists at the University of California, Santa Barbara want to study the effects of various mechanical forces on individual brain cells. Until now, however, researchers didn’t have the right tools.
To study brain impacts at the nanoscale, researchers built the world’s tiniest hammer — the μHammer, or “microHammer.” The μHammer is a cellular-scale machine capable of applying a variety of mechanical forces to neural progenitor cells, brain-centric stem cells. Eventually, scientists hope to use the hammer to apply forces to neurons and neural tissue.
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Feb 2, 2017
Scientists utilise innovative neuroimaging approach to unravel complex brain networks
Posted by Karen Hurst in categories: biotech/medical, engineering, genetics, neuroscience
A research team led by Professor Ed X. Wu of the Department of Electrical and Electronic Engineering at the University of Hong Kong has used an innovative neuroimaging tool to interrogate the complex brain networks and functions.
The team has successfully manipulated two pioneering technologies: optogenetics and functional magnetic resonance imaging (fMRI), for investigation of the dynamics underlying brain activity propagation. Their breakthrough to simultaneously capture large-scale brain-wide neural activity propagation and interaction dynamics, while examining their functional roles has taken scientists a step further in unravelling the mysteries of the brain. It could lead to the development of new neurotechnologies for early diagnosis and intervention of brain diseases including autism, Alzheimer’s disease or dementia.
The findings have recently been published in the prestigious international academic journal Proceedings of the National Academy of Sciences (PNAS).
Feb 2, 2017
How breaks in DNA are repaired
Posted by Karen Hurst in categories: biotech/medical, evolution, genetics
Interesting read especially as we look at various areas including synbio and super humans.
The results are significant for gene therapy procedures and for our understanding of cell transformation. A team of researchers from the biology department at TU Darmstadt has discovered that the processes for repairing DNA damage are far more complex than previously assumed. The ends of breaks in the double helix are not just joined, they are first changed in a meticulously choreographed process so that the original genetic information can be restored. The results have now been published in the research journal Molecular Cell.
DNA, the carrier of our genetic information, is exposed to continual damage. In the most serious damage of all, the DNA double-strand break, both strands of the double helix are broken and the helix is divided in two. If breaks like this are not efficiently repaired by the cell, important genetic information is lost. This is often accompanied by the death of the cell, or leads to permanent genetic changes and cell transformation. Over the course of evolution, ways to repair this DNA damage have developed, in which many enzymes work together to restore the genetic information with the maximum possible precision.
As it stands today, there are two main ways of repairing DNA double-strand breaks, which differ greatly in terms of their precision and complexity. The apparently simpler method, so-called non-homologous end joining, joins together the break ends as quickly as possible, without placing particular importance on accurately restoring the damaged genetic information. The second method of repair, homologous recombination, on the other hand, uses the exactly identical information present on a sister copy to repair the damaged DNA with great precision. However, such sister copies are only present in dividing cells, as the genetic information has to be duplicated before the cells divide. But most cells in the human body do not undergo division, which therefore assigns them to the apparently more inaccurate method of end joining.
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