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Scientific American - Objets Actus

Growing Prostates from Adult Stem Cells--But Who Would Want One?
Mercredi 22 Octobre 2008 - 16:00 - 1 mois, 1 semaine depuis - Cancer - Scientific American
Researchers report today that they grew prostate glands--important for reproduction in male mammals--in mice using a single stem cell transplanted from the prostates of donor mice. The findings may pave the way to new therapies for prostate cancer, which strikes one in six men in the U.S. [More]

Mapping the Spine, Gene by Gene
Dimanche 12 Octobre 2008 - 22:00 - 1 mois, 2 semaines depuis - Cancer - Scientific American
Spinal cord injuries and disorders afflict millions worldwide, from disabled veterans to people with neurodegenerative disorders such as Lou Gehrig’s disease, yet there is currently no way to repair a damaged spine. Geneticists at the Allen Institute for Brain Science in Seattle are hoping to change that by developing the first genetic encyclopedia of the spinal cord.The Allen Spinal Cord Atlas, which will be available online for free in early 2009, will map out which genes are active in which locations along the spine in mice, which share 90 percent of their genetic material with humans. [More]

How Green Was the Nobel Prize in Chemistry
Mercredi 08 Octobre 2008 - 05:04 - 1 mois, 3 semaines depuis - Cancer - Scientific American
[The following is an exact transcript of this podcast.]The Nobel Prize in chemistry goes to three men who revolutionized molecular life science, Japan’s Osamu Shimomura and Americans Martin Chalfie and Roger Tsien. They developing tools to light up and see individual proteins inside living cells. These tiny molecular flashlights make it possible to study numerous events that take place in cells and whole organisms that were previously invisible--such as the development of nerve cells or the spread of cancer cells. [More]

What makes pancreatic cancer so deadly?
Lundi 25 Août 2008 - 15:00 - 3 mois, 1 semaine depuis - Cancer - Scientific American
Gene Upshaw, the executive director of the National Football League Player's Association--the union for NFL players--died late Wednesday evening of pancreatic cancer while vacationing in California's Lake Tahoe. Doctors diagnosed the 63-year-old Hall of Fame offensive lineman with the disease just four days earlier. [More]

Antibody Drug Unleashes Tumor-Killer T Cells
Vendredi 15 Août 2008 - 10:00 - 3 mois, 2 semaines depuis - Cancer - Scientific American
Scientists have developed a two-pronged protein that grabs immune system cells with one arm and introduces them to cancer cells it has snagged with the other. The result: eradicated tumors--at certain doses. [More]

Cancer Drug Costs May Help Doctors Select a Treatment
Lundi 11 Août 2008 - 22:00 - 3 mois, 3 semaines depuis - Cancer - Scientific American
Oncologists will soon be adding “financial counselor” to their job description. With an increasing number of cancer patients suffering economic hardships as a side effect of expensive therapy, most oncologists are finding that cost needs to be considered as part of treatment options. Leading cancer organizations are now working on incorporating cost into treatment guidelines and other materials. The change, which departs from the current American medical ethos, is fraught with thorny questions not only for cancer doctors and patients but also for the health care system at large.The U.S. spends about $200 billion annually on cancer care; many new drugs cost several thousand dollars monthly. For patients, co-payments represent the most severe sappers of bank accounts. Increasingly, insurers are holding patients accountable for up to 20 percent of the prescription price. Covered drugs being used off-label (for an indication not formally approved but still medically appropriate) can carry co-pays of up to 30 percent. [More]

Lensless On-Chip Microscope Inspired by "Floaters" in the Eye [News]
Mardi 29 Juillet 2008 - 05:00 - 4 mois depuis - Cancer - Scientific American
Researchers hope that a new kind of small portable microscope may give health workers the ability to quickly and cheaply scan blood for tumor cells and life-threatening parasites. [More]

Lensless On-Chip Microscope Inspired by "Floaters" in the Eye
Mardi 29 Juillet 2008 - 05:00 - 4 mois depuis - Cancer - Scientific American
Researchers hope that a new kind of small portable microscope may give health workers the ability to quickly and cheaply scan blood for tumor cells and life-threatening parasites. [More]

Good and Evil: A Cancer Vaccine from Tobacco Plants [News]
Mardi 22 Juillet 2008 - 12:00 - 4 mois, 1 semaine depuis - Cancer - Scientific American
In the first human trial of its kind, a vaccine grown in genetically engineered tobacco plants has proved to be safe, paving the way to one day use it to help combat a potentially fatal form of non-Hodgkin's lymphoma. [More]

Good and Evil: A Cancer Vaccine from Tobacco Plants
Mardi 22 Juillet 2008 - 12:00 - 4 mois, 1 semaine depuis - Cancer - Scientific American
In the first human trial of its kind, a vaccine grown in genetically engineered tobacco plants has proved to be safe, paving the way to one day use it to help combat a potentially fatal form of non-Hodgkin's lymphoma. [More]

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