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Scientific American - Objets Actus

Scientific American Magazine: Regaining Lost Luster
Dimanche 16 Décembre 2007 - 16:01 - 11 mois, 2 semaines depuis - Cancer - Scientific American
The past 15 years have been a roller coaster for gene therapy. After being touted in the early 1990s as “the medicine of the future,” gene therapy left an 18-year-old dead and three others with leukemia; in July it was tied to the death of a 36-year-old Illinois woman undergoing treatment for rheumatoid arthritis, although further investigation cleared her therapy of the blame. Gene therapy scientists, however, believe they can put the bad news behind them, thanks to a handful of recent developments and others just over the horizon.

Scientific American Magazine: Taming Vessels to Treat Cancer
Dimanche 16 Décembre 2007 - 16:00 - 11 mois, 2 semaines depuis - Cancer - Scientific American
While still a graduate student in 1974, I had a chance to see malignant tumors from a most unusual perspective. I was working at the National Cancer Institute in the laboratory of the late Pietro M. Gullino, who had developed an innovative experimental setup for studying cancer biology--a tumor mass that was connected to the circulatory system of a rat by just a single artery and a single vein. As a chemical engineer, I decided to use this opportunity to measure how much of a drug injected into the animal would flow to the tumor and back out again. Amazingly, most of the substance injected into the rat never entered the tumor. To make matters worse, the small amount that did reach the mass was distributed unevenly, with some areas accumulating hardly any drug at all.

Scientific American Magazine: Supplement: Response to "Can Fat Be Fit"
Dimanche 16 Décembre 2007 - 16:00 - 11 mois, 2 semaines depuis - Cancer - Scientific American
Commentary

News: 3-D Mammography Adds New Dimension to Breast Cancer Screening
Jeudi 13 Décembre 2007 - 08:45 - 11 mois, 3 semaines depuis - Cancer - Scientific American
A team of researchers is studying the use of stereographic imaging technology and three-dimensional (3-D) displays to detect potential breast malignancies missed by traditional mammographies, opening the door to earlier detection and treatment as well as reducing the number of false-positive results and follow-up tests.

News: New Research Yields Clues about Makeup of Cancer Cells
Mardi 11 Décembre 2007 - 16:00 - 11 mois, 3 semaines depuis - Cancer - Scientific American
Breast cancer has proved especially difficult to find and fight due to the cancer cells' ability to blend in with healthy ones. Careful examination of the chemical makeup and shape of normal and diseased cells, however, promises to help doctors draw cancer out of the shadows.

Scientific American Body: Weighing Risks Written in DNA
Mercredi 05 Décembre 2007 - 22:15 - 12 mois depuis - Cancer - Scientific American
A chance to peek into the future--at least one possible future--is always a tempting fantasy. But would you take it? And if you didn’t like what you saw, how hard would you try to change it? After almost 20 years spent reading, mapping and analyzing human DNA, researchers at the National Human Genome Research Institute (NHGRI) believe that personal genetic information is nearly ready for use by consumers in managing their health. To determine whether that is so, however, the institute is launching a large-scale study.

Scientific American Body: The Ultimate Blood Test
Mercredi 05 Décembre 2007 - 22:00 - 12 mois depuis - Cancer - Scientific American
As the dizziness began to fade and the nausea to subside, I kept thinking how two tablespoons did not sound like a lot of blood. During regular checkups, my physician draws only about half that amount. I suppose I might have guessed, especially after a 12-hour fast, I would sicken when my blood pressure and glucose levels dipped--I’m a terrible blood donor in that regard.

Fact or Fiction: Fact or Fiction?: Antiperspirants Do More Than Block Sweat
Jeudi 09 Août 2007 - 10:00 - 1 année, 3 mois depuis - Cancer - Scientific American
For some, the thought of abandoning antiperspirants gives them the cold sweats. For others, it's the thought of using them. Underarm antiperspirants guard against odor and wetness, but could the aluminum-based compounds that reduce sweat actually cause Alzheimer's disease and breast cancer?

News: Defense against Ancient Virus Opened Door to HIV
Jeudi 21 Juin 2007 - 12:00 - 1 année, 5 mois depuis - Cancer - Scientific American
Early humans successfully fended off a virus that infected chimpanzees by evolving a protein capable of neutralizing it, according to a new study. But what goes around comes around, evolutionarily speaking: Four million years later, the same protein seems to have left us more vulnerable than other primates to the human immunodeficiency virus (HIV).

News: Some Blood Diseases May Stem from Cells' Environment
Vendredi 15 Juin 2007 - 13:00 - 1 année, 5 mois depuis - Cancer - Scientific American
Researchers believe they may have unlocked the mystery behind a set of blood disorders called myeloproliferative syndromes--precursors to conditions such as leukemia that are triggered by an excess of stem cells. If so, the finding could set the stage for ways to prevent and treat such conditions--some of which can lead to heart disease, abnormal bleeding and even death.

Actus fournies par : Scientific American

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