http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. A new study led by a Canadian research team has identified the reason why prazosin, a drug commonly used to reduce high blood pressure, may cause lightheadedness and possible fainting upon standing in patients with normal blood pressure who take the drug for other reasons, such as the treatment of PTSD and anxiety. http://medicalxpress.com/news/2013-03-fainting-result-blood-pressure-drug.html Psychology & Psychiatry Mon, 11 Mar 2013 07:13:07 EST news282204766 Two studies in The Journal of General Physiology (JGP) help pave the way for a "shortcut" model-free approach to studying activation of "polymodal" ion channels—channels that open in response to multiple stimuli. http://medicalxpress.com/news/2012-12-model-free-characterize-polymodal-ion-channel.html Medical research Thu, 27 Dec 2012 13:22:23 EST news275836934 (HealthDay)—Scientists have long thought that stress plays a role in epileptic seizures, and new evidence suggests that epilepsy patients who believe this is the case experience a different brain response when faced with a nerve-wracking situation. http://medicalxpress.com/news/2012-12-link-stress-epileptic-seizures.html Neuroscience Tue, 04 Dec 2012 12:40:02 EST news273845725 The psychological scars of childhood abuse can last well into adulthood. New research from Concordia University shows the harm can have longterm negative physical effects, as well as emotional ones. http://medicalxpress.com/news/2012-11-childhood-abuse-poor-adult-health.html Psychology & Psychiatry Tue, 13 Nov 2012 13:01:33 EST news272034086 (Medical Xpress) -- Such behavior problems in adolescence as aggression and delinquency are linked to chronic stress in early childhood, which interferes with children's development of self-control, reports a Cornell study published online in April in Developmental Psychology. http://medicalxpress.com/news/2012-08-teen-behavior-problems-linked-childhood.html Psychology & Psychiatry Tue, 07 Aug 2012 05:40:19 EST news263536802 (Medical Xpress) -- Researchers at the University of South Florida (USF) College of Nursing have shown that brief treatments with Accelerated Resolution Therapy (ART) substantially reduce symptoms associated with post-traumatic stress disorder (PTSD) including, depression, anxiety, sleep dysfunction and other physical and psychological symptoms. The findings of this first study of ART appear in an on-line article published June 18, 2012 in the journal Behavioral Sciences. http://medicalxpress.com/news/2012-07-resolution-therapy-significantly-ptsd-symptoms.html Psychology & Psychiatry Fri, 27 Jul 2012 09:10:36 EST news262599029 (Medical Xpress) -- Researchers at the University of St Andrews found that non-sexual social interactions with men caused a noticeable rise in the temperature of a woman's face, without them even noticing. http://medicalxpress.com/news/2012-05-non-sexual-social-contact-body-temperature.html Medical research Wed, 30 May 2012 17:34:40 EST news257618065 Neuroscience researchers from Tufts have demonstrated, for the first time, that the physiological response to stress depends on neurosteroids acting on specific receptors in the brain, and they have been able to block that response in mice. This breakthrough suggests that these critical receptors may be drug therapy targets for control of the stress-response pathway. This finding may pave the way for new approaches to manage a wide range of neurological disorders involving stress. http://medicalxpress.com/news/2011-12-mechanism-stress.html Neuroscience Tue, 13 Dec 2011 17:00:17 EST news243016253 (Medical Xpress) -- Over the past decade, MIT biologist Leonard Guarente and others have shown that very-low-calorie diets provoke a comprehensive physiological response that promotes survival, all orchestrated by a set of proteins called sirtuins. http://medicalxpress.com/news/2011-12-proteins-linked-longevity-involved-mood.html Medical research Fri, 09 Dec 2011 06:35:42 EST news242634930 All animals face the challenge of deciding which chemicals in the environment are useful and which are harmful. A new study greatly improves our understanding of how animals sense an important class of potentially harmful chemicals: weak acids. The study appears online on May 16 in the Journal of General Physiology. http://medicalxpress.com/news/2011-05-animals-potentially-acids.html Medical research Mon, 16 May 2011 12:31:18 EST news224767867