Archive for the 'biotech' Category...
Filed under biotech
Vicissidude writes with a link to a story on the Nature website, discussing the discovery of a protein that may enable us to sense cold temperatures. It’s been pinned down in mice, and the same protein may perform a similar function in humans. Mice rely on a single protein, called TRPM8, to sense both cold temperatures and menthol, the compound that gives mints their cool sensation. The sensor also controls the pain-relieving effect of cool temperatures, but does not seem to play an important role in the response to painfully cold temperatures below 10 C. TRPM8 is in the same family as the protein that detects heat and capsaicin, the compound that makes peppers hot. These proteins lie in the cell membranes of select neurons, and form channels that open and close in response to external signals.”
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Original post by Zonk and software by Elliott Back
Filed under biotech
amigoro writes “A device that specifically targets rapidly growing cancer cells with intermediate frequency electrical fields doubled the survival rates of patients with brain cancer, according to an article apperaring in PNAS. The device uses electrical fields to disrupt tumor growth by interfering with cell division of cancerous cells, causing them to stop proliferating and die off instead of dividing and growing. Healthy brain cells rarely divide and have different electrical properties than cancerous brain cells. This allows the device to target cancer cells without affecting the healthy cells. Essentially no device-related side effects were seenin the clinical trial.”
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Original post by kdawson and software by Elliott Back
Filed under biotech
Dekortage writes “The Washington Post is reporting on recent neuroscience research indicating that the brain is pre-wired to enjoy altruism — placing the interests of others ahead of one’s own. In studies, ‘[G]enerosity activated a primitive part of the brain that usually lights up in response to food or sex… Altruism, the experiment suggested, was not a superior moral faculty that suppresses basic selfish urges but rather was basic to the brain, hard-wired and pleasurable.’ Such research ‘has opened up a new window on what it means to be good,’ although many philosophers over recorded history have suggested similar things.”
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Original post by kdawson and software by Elliott Back
Filed under biotech
Parallax Blue writes “The Independent is reporting new findings that indicate a common additive called sodium benzoate, found in soft drinks such as Fanta and Pepsi Max among others, has the ability to switch off vital parts of DNA in a cell’s mitochondria. From the article: ‘The mitochondria consumes the oxygen to give you energy and if you damage it — as happens in a number of diseased states — then the cell starts to malfunction very seriously. And there is a whole array of diseases that are now being tied to damage to this DNA — Parkinson’s and quite a lot of neuro-degenerative diseases, but above all the whole process of aging.’ European Union MPs are now calling for an urgent investigation in the wake of these alarming new findings.”
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Original post by Zonk and software by Elliott Back
Filed under biotech
mikesd81 writes “The Washington Post has an article about a team of American and Irish researchers that have discovered that some female sharks can reproduce without having sex, the first time that scientists have found the unusual capacity in such an ancient vertebrate species. Their report concludes that sharks can reproduce asexually through the process known as parthenogenesis (the growth and development of an embryo or seed without fertilization by a male). Scientists started investigating after a female hammerhead shark was mysteriously born at Omaha’s Henry Doorly Zoo in a tank that housed 3 female sharks. It was originally thought one had stored sperm from a male shark before fertilizing an egg. However, baby shark’s genetic makeup perfectly matched one of the females in the tank, with no sign of a male parent.”
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Original post by Zonk and software by Elliott Back
