http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. A new Canadian study shows that operating without interrupting warfarin treatment at the time of cardiac device surgery is safe and markedly reduces the incidence of clinically significant hematomas compared to the current standard of care. The new findings were released today at Heart Rhythm 2013, the Heart Rhythm Society's 34th Annual Scientific Sessions, and will be published online today in The New England Journal of Medicine (NEJM). http://medicalxpress.com/news/2013-05-warfarin-cardiac-device-surgery.html Cardiology Thu, 09 May 2013 11:00:02 EST news287305686 Using an artificial protein that stimulates the body's natural immune system to fight cancer, a research team at Duke Medicine has engineered a lethal weapon that kills brain tumors in mice while sparing other tissue. If it can be shown to work in humans, it would overcome a major obstacle that has hampered the effectiveness of immune-based therapies. http://medicalxpress.com/news/2012-12-immune-therapy-successfully-brain-tumors.html Immunology Mon, 17 Dec 2012 15:00:07 EST news274959213 Researchers have developed a non-invasive way of predicting how much of a cancer-killing drug is absorbed by a tumour. The preliminary study, which will be reported at the 24th EORTC-NCI-AACR Symposium on Molecular Targets and Cancer Therapeutics in Dublin, Ireland, today (Thursday), was conducted in lung cancer patients and it also revealed that less than one per cent of the drug, docetaxel, is absorbed by the tumours. http://medicalxpress.com/news/2012-11-non-invasive-technique-patients-response-chemotherapy.html Cancer Wed, 07 Nov 2012 18:28:27 EST news271535298 (HealthDay) -- Chronic use of methylphenidate (Ritalin) in young monkeys has no significant effect on growth or the dopamine system, or the likelihood of becoming addicted to cocaine, according to a study published online July 18 in Neuropsychopharmacology. http://medicalxpress.com/news/2012-07-animal-long-term-ritalin-doesnt-impact.html Psychology & Psychiatry Fri, 20 Jul 2012 13:30:02 EST news262008331 New research reveals that insulin applied in therapeutic doses selectively stimulates the formation of new elastic fibers in cultures of human aortic smooth muscle cells. These results advance the understanding of the molecular and cellular mechanisms of diabetic vascular disease. The study is published in the February issue of the American Journal of Pathology. http://medicalxpress.com/news/2012-01-insulin-therapy-atherosclerotic-lesions-diabetic.html Diseases, Conditions, Syndromes Mon, 09 Jan 2012 13:01:04 EST news245336456