samedi 30 juillet 2011

Press review (July 30, 2011) – Revue de presse (30 juillet 2011)

Computer-aided mammography doesn't improve breast cancer detection
The widely used mammography software known as computer-aided detection (CAD) doesn't improve detection of invasive breast cancer, new research suggests.
By Kathleen Doheny. In USA Today

Screening has little impact on breast cancer deaths: study‎
Falling breast cancer death rates have little to do with breast screening but are down to better treatment and health systems, scientists said on Friday, in a study likely to fuel a long-running row over the merits of mammograms.
By Eric Gaillard, Elizabeth Fullerton. Reuters

Scant Evidence to Link 9/11 to Cancer, US Report Says
There is not enough evidence yet to say whether the dust and smoke cloud produced by the terrorist attack on the World Trade Center caused cancer, federal officials concluded in a report released on Tuesday.
By Anemona Hartocollis. In The New York Times

Convergence in head and neck cancer
In back-to-back papers published online July 28 in Science, researchers from the Broad Institute, Dana-Farber Cancer Institute, Johns Hopkins Kimmel Cancer Center, the University of Pittsburgh, and the University of Texas MD Anderson Cancer Center have confirmed genetic abnormalities previously suspected in head and neck cancer, including defects in the tumor suppressor gene known as p53. But the two teams also found mutations in the NOTCH family of genes, suggesting their role as regulators of an important stage in cell development may be impaired.
EurekAlert (press release)

Researchers Look to Dogs to Better Understand Intricacies of Bone Cancer
A new University of Minnesota discovery may help bone cancer patients fight their disease more effectively, according to new research published in the September issue of “Bone”.
In Science Daily

Are Cancers New Species?
Cancer is one of the scourges of modern society. An increasing number of people are fighting it, and a lot of research is being done in order to understand it better, hopefully leading to treatments or cures.
At present, the dominant theory is that cancer arises from a handful gene mutations. But recently, Peter Duesberg and his colleagues at UC Berkeley have launched the idea that cancer instead arises from chromosome disruptions, and that this, in fact, constitutes a form of speciation. So, according to this view, cancers are newly evolved species, as they have new chromosomal karyotypes. On top of this, cancers are autonomous and don’t need other cells for survival.
By Gunnar De Winter. In Science 2.0

Growing Up Near Livestock Tied to Blood Cancers
Children raised on livestock farms are at significantly greater risk of developing blood cancers -- such as leukemia, multiple myeloma and non-Hodgkin's lymphoma -- later in life, a new study contends.
In U.S. News & World Report

Cancer mystery solved
Same protein (maspin) can slow disease or put it on fast track.
By John Miner. In The London Free Press

Early-stage breast cancer: Microscopic tumor spread is no worry
Women with early-stage breast cancer have plenty of procedures and treatments to deal with. So it may come as welcome news that a large clinical trial has found no reason for doctors to perform two tests that were thought to help predict patient survival. Writing in the Journal of the American Medical Assn., the researchers say that the test results are meaningless.
By Karen Kaplan. Los Angeles Times

Researchers Find 3 Genes (MSR1, ASCC1, and CTHRC1) Linked to Esophagus Disorders
Mutations in three genes have been found to be more common among people with disorders of the esophagus, including esophageal cancer and Barrett esophagus (a complication of gastroesophageal reflux disease), a new study shows.
In U.S. News & World Report

Can the cat give you cancer? Parasite in their bellies linked with brain tumours
Scientists have found a link between brain tumours and a parasite that is found in both cats' stomachs and humans.
By Fiona Macrae. In The Daily Mail

Pas de lien entre le 11/09 et des cancers
Il n'existe pas de preuve que l'exposition aux poussières et aux décombres du World Trade Center après les attentats du 11 septembre 2001 à New York ait entraîné de nombreux cas de cancers, affirme un rapport du gouvernement américain.
Le Figaro

Plan cancer: à mi-parcours, Sarkozy exhorte à "ne pas relâcher l'effort"
Nicolas Sarkozy a souligné "la poursuite des avancées obtenues dans la lutte contre le cancer" et appelé "à ne pas relâcher l'effort, notamment en matière de prévention et de dépistage", en recevant lundi un nouveau rapport d'étape sur le plan cancer 2009-2013.
Voir aussi le site:

Cancer de la prostate résistant : la testostérone est court-circuitée
Des chercheurs texans ont identifié un mécanisme de résistance à la castration hormonale dans les cancers de la prostate. La dihydrotestostérone (DHT), puissant androgène, continuerait à être synthétisée par une voie alternative indépendante de la testostérone.
Par Irène Drogou. Dans Le Quotidien du Médecin

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