Word: organ
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...tends to think of the bones as inert, calcified structures, but they are, in fact, active tissues that constantly renew themselves. Cells called osteoblasts continually build new bone, while osteoclasts destroy old bone. What the new research shows is that the bones also act as a kind of endocrine organ. They release a hormone called osteocalcin that not only acts locally to influence bone formation, but also increases the production of insulin in the pancreas, raises the body's sensitivity to insulin and reduces stores...
...compared to a 3%-5% development rate for nuclear transfer embryos - parthenogenesis still requires a steady supply of good quality human eggs. These are notoriously difficult to obtain, so the technique won't likely revolutionize medicine yet. But, suggests Daley, it could be used to help alleviate the organ-donation shortage in the U.S.: parthenogenetically created transplant tissues and organs can be banked and later matched on major immune markers to many different patients. It's not quite patient-specific medicine, but it is one step closer...
That's especially exciting because painting tumors could also help doctors control cancers before they spread from an organ to the lymph nodes and other tissues. Olson's molecular paint can pick up tumors as small as 200 cells, potentially helping doctors identify, for instance, the micrometastases that can make breast cancer so dangerous. Current techniques like magnetic resonance imaging start detecting tumors at 1 million cells. "It's a way to extend what we can see," says Olson, making all our tools against cancer more powerful...
That's especially exciting because painting tumors could also help doctors control cancers before they spread from an organ to the lymph nodes and other tissues. Olson's molecular paint can pick up tumors as small as 200 cells, potentially helping doctors identify, for instance, the micrometastases that can make breast cancer so dangerous. Current techniques like magnetic resonance imaging start detecting tumors at 1 million cells. "It's simply a way to extend what we can see," says Olson, making all our tools against cancer more powerful...
Number of people who registered as organ donors in the Netherlands the month after a TV hoax featured three faux contestants vying for a kidney. Producers defended the production as a means of raising donor awareness...