Word: miceli
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Dates: during 2000-2009
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...body have their own stem cells. Blood cells, for example, derive from a single hematopoietic stem cell in the bone marrow, and now two groups of scientists from Boston report that they have identified a similar mother stem cell from which most heart cells arise. Working with mice, one group at Massachusetts General Hospital isolated a cardiac stem cell that generates the three major cell types of the mammalian heart, while another group at the hospital found a stem cell that gives rise to the contracting and smooth muscle cells found in heart vessel walls...
...could form the basis of new heart therapies, and could become a source of healthy, replacement cells for heart tissue damaged after a heart attack or by heart disease. But they represent only the first step in what will be a long road. First, the studies were conducted in mice and rats, and while these animals can serve as a template for understanding how heart cells develop, any stem cell-based therapies that come out of them will have to go through more testing in larger mammals before doctors can even begin to think about trying them in human patients...
...Mice and rats who have undergone genetic manipulation and calorically restrictive diets have a 40 percent longer lifespan than their unmanipulated counterparts, he said in an interview Monday...
...results can be replicated safely in humans--and how. So don't experiment at home just yet. As David Sinclair, the study's co-author, notes, "You would need to drink more than 100 glasses of red wine a day to get as much resveratrol as those mice...
Oenophiles rejoiced last week when headlines trumpeted a study suggesting that the fountain of youth flows with red wine. Scientists at Harvard Medical School and the National Institute on Aging found that mice fed a high-calorie diet along with large doses of resveratrol--a natural substance found in grape skins--lived longer than mice given no resveratrol. Many of the negative effects of gluttony, such as liver damage and diabetes, were mitigated. One big consequence was not: the mice still...