May 19, 2012 |
Until recently, very few people had ever heard of raspberry ketones, the aromatic compounds that give the berries their distinctive smell. Today, health food stores have trouble keeping the capsules or drops of the stuff on their shelves. Almost overnight, an obscure plant compound became the next big thing in weight loss - and all it took was a few words from Dr. Oz. In a February episode of "The Dr. Oz Show," Mehmet Oz told viewers that raspberry ketones were "the No. 1 miracle in a bottle to burn your fat. " Once Oz calls something a "miracle," it doesn't remain obscure for long.
November 11, 2012 |
Here is a selection of some new offerings at the prestige end of the market, many predicated on exclusive ingredients and newfangled technology: Super Cream from 3LAB, exclusively at Barneys, joins that brand's high-priced roster but remains its most expensive launch to date. Co-founder Erica Chung attributes the $875 price to the cream's Intelligent Targeting Device technology, which is supposed to drive collagen and elastin to the cells that need it the most. The Bee Venom Mask from Heaven Skin Care became an overnight sensation when word came out that Kate Middleton, wife of England's Prince William, used it. Soon to be available in the U.S., the $560 Limited Edition Golden Bee Venom Mask contains a high concentration of bee venom, which is supposed to have something of a Botox effect on the skin.
April 4, 2013 |
Scientists have built a 3-D printer that creates material resembling human tissues. The novel substance, a deceptively simple network of water droplets coated in lipids, could one day be used to deliver drugs to the body -- or perhaps even to replace damaged tissue in living organs. The creation, described in the journal Science, consists of lipid bilayers separating droplets of water -- rather like cell membranes, whose double layers allow the body's cells to mesh with their watery environments while still protecting their contents.
August 1, 2012 |
When cancers are treated, tumors may shrink but then come roaring back. Now studies on three different types of tumors suggest a key reason why: The cancers are fueled by stem cells that chemotherapy drugs don't kill. The findings - made by independent research teams that used mice to study tumors of the brain, intestines and skin - could change the approach to fighting cancers in humans, experts said. Properties of these so-called cancer stem cells can be investigated so researchers can devise strategies for killing them off, said Luis F. Parada, a molecular geneticist at the University of Texas Southwestern Medical Center in Dallas and senior author of one of the studies published Wednesday.
November 6, 2012 |
Stem cell therapy may help repair the hearts of patients who have suffered heart attacks, and, according to a new study published Monday in the Journal of the American Medical Assn., it may not matter whether those stem cells come from the patient or a donor. For decades, common belief was that areas of the heart severely damaged by a heart attack could not be repaired. But the development of advanced cell therapies, in which stem cells or other cell types are injected into the damaged area, have provided new hope that interventions may be possible.
June 25, 2010 |
Breathe in, breathe out — it may seem simple, but lungs are devilishly complicated structures, boasting more than 40 different cell types and an intricate network of tiny blood vessels and air sacs. It's no wonder, then, that engineering lungs in the lab, either for transplantation or study, has been extremely challenging. Now two research groups have made major strides in attacking the problem. One has successfully engineered a lung that can sustain a living rat and the other has created a lung-mimicking device for toxicology studies that acts more like a real lung than any earlier efforts, the groups reported Thursday in the journal Science.