http://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- Scientists have been wrong for 250 years about a fundamental aspect of tissue regeneration, according to a University of Dayton biologist who says his recent discovery is good news for humans. http://phys.org/news229703994.html Biology Tue, 12 Jul 2011 15:40:29 EST news229703994 What does it take to regenerate a limb? Biologists have long thought that organ regeneration in animals like zebrafish and salamanders involved stem cells that can generate any tissue in the body. But new research suggests that multiple cell types are needed to regrow the complete organ, at least in zebrafish. http://phys.org/news224768144.html Biology Mon, 16 May 2011 12:36:02 EST news224768144 A seldom-studied gene known as notum plays a key role in the planarian's regeneration decision-making process, according to Whitehead Institute scientists. Protein from this gene determines whether a head or tail will regrow at appropriate amputation sites. http://phys.org/news224426817.html Biology Thu, 12 May 2011 14:00:15 EST news224426817 (AP) -- For the first time in five years, Emily Fennell has two hands. http://phys.org/news222451187.html Medicine & Health Tue, 19 Apr 2011 16:59:57 EST news222451187 (PhysOrg.com) -- Using an advanced form of a rubber stamp, researchers have developed a way to adhere an ultra-thin antibacterial coating to a wound. http://phys.org/news221207009.html Nanotechnology Tue, 05 Apr 2011 07:24:30 EST news221207009 UC Davis Vascular Center researchers have embarked on a highly anticipated study that involves using a patient's own stem cells to increase blood circulation to the lower leg with the hope of preventing amputation due to severe arterial disease or diabetes. http://phys.org/news218883293.html Medicine & Health Wed, 09 Mar 2011 08:55:04 EST news218883293 New research has found one of the smallest entities in the human genome, micro-RNA, could increase the risk of limb amputation in diabetic patients who have poor blood flow. http://phys.org/news214054096.html Medicine & Health Wed, 12 Jan 2011 11:28:59 EST news214054096 (PhysOrg.com) -- Regular doses of a licensed medication derived from fish oil could be used to improve nerve damage and prevent the onset of some of the serious complications of diabetes such as amputation, blindness or heart disease. http://phys.org/news213963009.html Medicine & Health Tue, 11 Jan 2011 10:11:59 EST news213963009 Unlike nerves of the spinal cord, the peripheral nerves that connect our limbs and organs to the central nervous system have an astonishing ability to regenerate themselves after injury. Now, a new report in the October 1st issue of Cell offers new insight into how that healing process works. http://phys.org/news204813331.html Medicine & Health Mon, 27 Sep 2010 13:35:44 EST news204813331 People suffering from diabetes-related foot ulcers show different rates of healing according to the way they cope and their psychological state of mind, according to new research by a health psychologist at The University of Nottingham. http://phys.org/news199963183.html Medicine & Health Mon, 02 Aug 2010 10:20:00 EST news199963183 The growing popularity of Western junk food is fuelling a diabetes boom across Southeast Asia, Australian researchers warned on Wednesday. http://phys.org/news197696114.html Medicine & Health Wed, 07 Jul 2010 04:35:29 EST news197696114 There's currently no reliable tool to help prosthetic developers fit artificial limbs without ensuing discomfort or pain, or tell medical personnel when bed-ridden patients need to be moved to avoid bedsores and other problems. http://phys.org/news193407233.html Medicine & Health Tue, 18 May 2010 13:14:31 EST news193407233 (AP) -- The World Health Organization launched a website Tuesday it hopes will help cut the estimated 100,000 deaths caused annually by snake poison. http://phys.org/news192193667.html Medicine & Health Tue, 04 May 2010 12:08:00 EST news192193667 (PhysOrg.com) -- Scientists at The University of Nottingham have discovered the gene that enables an extraordinary worm to regenerate its own body parts after amputation -- including a whole head and brain. http://phys.org/news191225651.html Biology Fri, 23 Apr 2010 07:14:55 EST news191225651 In the United States, more than 100,000 amputations are performed each year on individuals with critical limb ischemia, the most severe form of peripheral arterial disease (PAD). The number one priority in treating these patients is to re-establish blood flow to avoid limb amputation. Interventional radiologists have found that a subgroup of patients with critical limb ischemia may avoid amputation through the use of drug-eluting stents on the smaller arteries below the knee, according to a study released at the Society of Interventional Radiology's Annual Scientific Meeting in Tampa, Fla. http://phys.org/news187872850.html Medicine & Health Mon, 15 Mar 2010 18:00:24 EST news187872850 Over the years, all terrain vehicles (ATVs) and motocross motorcycles have gained popularity and marketed as toys to consumers. These high-velocity machines can weigh between 300 and 600 pounds, and run on average between 25 and 60 miles per hour, while some even reach maximum speeds of 75 miles per hour. http://phys.org/news187430838.html Medicine & Health Wed, 10 Mar 2010 08:07:48 EST news187430838 We know exactly where an object is when we say it is “within the reach of our hand.”  But if we don’t have a hand, can we still see the object just where it is? http://phys.org/news184925934.html Medicine & Health Tue, 09 Feb 2010 09:10:01 EST news184925934 where actions such as grasping and touching occur — is known as the "action space." Research has shown that visual information in this area is organized in hand-centered coordinates — in other words, the representation of objects in the human brain depends on their physical location with respect to the hand. According to new research in Psychological Science, a journal of the Association for Psychological Science, amputation of the hand results in distorted visuospatial perception (i.e., figuring out where in space objects are located) of the action space. http://phys.org/news182013643.html Medicine & Health Wed, 06 Jan 2010 15:30:01 EST news182013643 A vascular surgical technique pioneered at UT Southwestern Medical Center and designed to replace infected aortic grafts with the body's own veins has proved more durable and less prone to new infection than similar procedures using synthetic and cadaver grafts. http://phys.org/news181399154.html Medicine & Health Wed, 30 Dec 2009 12:39:53 EST news181399154 Communication between nerve cells is vital for our bodies to function. Part of this communication happens through vesicles containing signalling molecules called neurotransmitters. The vesicle fuses with the nerve cell membrane; the neurotransmitters are released and quickly recorded by the next nerve cell. It is crucial that new vesicles constantly are produced for the nerve cell communication continuously to take place. If parts of this communication do not work, it leads to nerve pain like phantom pain following amputation. http://phys.org/news180713035.html Medicine & Health Tue, 22 Dec 2009 14:30:07 EST news180713035 A gene commonly studied by cancer researchers has been linked to the metabolic inflammation that leads to diabetes. http://phys.org/news179776847.html Chemistry Fri, 11 Dec 2009 18:02:19 EST news179776847 Blood vessel blockage, a common condition in old age or diabetes, leads to low blood flow and results in low oxygen, which can kill cells and tissues. Such blockages can require amputation resulting in loss of limbs. Now, using mice as their model, researchers at Johns Hopkins have developed therapies that increase blood flow, improve movement and decrease tissue death and the need for amputation. The findings, published online last week in the early edition of the Proceedings of the National Academy of Sciences, hold promise for developing clinical therapies. http://phys.org/news179511321.html Medicine & Health Tue, 08 Dec 2009 16:16:36 EST news179511321 A landmark, 25-year review of cases in which surgeons had to remove the lower portion of the body from the waist down for severe pelvic bone infections shows the therapy can add years and quality of life to survivors, say researchers at UT Southwestern Medical Center. http://phys.org/news177692361.html Medicine & Health Tue, 17 Nov 2009 15:50:01 EST news177692361 The search for the holy grail of regenerative medicine -- the ability to "grow back" a perfect body part when one is lost to injury or disease -- has been under way for years, yet the steps involved in this seemingly magic process are still poorly understood. http://phys.org/news176398617.html Biology Mon, 02 Nov 2009 15:39:16 EST news176398617 Edmonton researchers recommend that people over age 40 be screened for peripheral artery disease (PAD), which puts people at high risk for serious medical complications including heart disease, stroke, and possible lower limb amputation. http://phys.org/news175758233.html Medicine & Health Mon, 26 Oct 2009 06:45:02 EST news175758233 (AP) -- Makers of injected promethazine, a sedative also used to treat nausea and vomiting, are being required to put the strongest warning possible on the product because it can cause tissue damage leading to amputation, the Food and Drug Administration said Wednesday. http://phys.org/news172344261.html Medicine & Health Wed, 16 Sep 2009 18:50:01 EST news172344261 Amputations trigger a molecular response that determines if a head or tail will be regrown in planaria, a flatworm commonly studied for its regenerative capabilities. Until now, no molecular connection between wounding and the decision to regenerate either a head or tail in planaria had been identified. http://phys.org/news172162137.html Medicine & Health Mon, 14 Sep 2009 16:20:02 EST news172162137 Technically speaking, an aneurysm is a dilation, or an enlargement, of a blood vessel to at least 50 percent beyond its normal diameter. So if a blood vessel is normally one inch wide, it is considered an aneurysm when it is greater than 1.5 inches wide. While finding out that you have an aneurysm can be concerning, the good news is that we continue to learn more about how aneurysms behave, which can help us determine if and when an aneurysm should be repaired, and the really good news is that we are continually developing new and less invasive ways to treat them. http://phys.org/news171728197.html Medicine & Health Wed, 09 Sep 2009 15:40:02 EST news171728197 (AP) -- It costs $1,400 to cover the oozing sore on the diabetic's foot with a piece of artificial skin, helping it heal if patients keep pressure off that spot. So when Medicare paid for the treatment but not the extra $100 for a simple walking cast to protect it, an artificial skin maker last year started giving free casts to some needy patients. http://phys.org/news170349496.html Medicine & Health Mon, 24 Aug 2009 16:40:02 EST news170349496 Limb-sparing surgery, which has been taking the place of amputation for bone and soft tissue sarcomas of the lower limb in recent years, may not provide much or even any additional benefit to patients according to a new review. The analysis, published in the September 15, 2009 issue of Cancer indicates that patients and physicians should rethink the pros and cons of limb-sparing surgery and amputation. http://phys.org/news169104146.html Medicine & Health Mon, 10 Aug 2009 06:23:22 EST news169104146