http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Outrageous prices may not be the only thing causing anger at the petrol pumps. A new study, published in the open access journal BMC Physiology, has shown that rats exposed to fumes from leaded and unleaded gasoline become more aggressive. http://www.physorg.com/news178264764.html Medicine & Health Tue, 24 Nov 2009 06:02:11 EST news178264764 Researchers at Emory University and the Georgia Institute of Technology have developed microscopic polymer beads that can deliver an antioxidant enzyme made naturally by the body into the heart. http://www.physorg.com/news177581687.html Chemistry Mon, 16 Nov 2009 08:15:10 EST news177581687 (PhysOrg.com) -- Becoming "hard of hearing" is a standard but unfortunate part of aging: A syndrome called age-related hearing loss affects about 40 percent of people over 65 in the United States, and will afflict an estimated 28 million Americans by 2030. http://www.physorg.com/news177007147.html Medicine & Health Mon, 09 Nov 2009 17:30:11 EST news177007147 Antioxidant extracts of the leaves of the Gingko biloba tree may protect cells from radiation damage, according to a study published in the International Journal of Low Radiation. The discovery may one day be used to help reduce side effects in cancer patients undergoing radiotherapy. http://www.physorg.com/news175174404.html Medicine & Health Mon, 19 Oct 2009 12:50:10 EST news175174404 Researchers at the Institute of Biochemistry and Molecular Biology I of the Heinrich-Heine University, Düsseldorf, Germany, investigated the relationship between fruit and vegetable intake, plasma antioxidant micronutrient status and cognitive performance in healthy subjects aged 45 to 102 years. Their results, published in the August issue of the Journal of Alzheimer's Disease, indicated higher cognitive performance in individuals with high daily intake of fruits and vegetables. http://www.physorg.com/news171745580.html Medicine & Health Wed, 09 Sep 2009 20:30:02 EST news171745580 (PhysOrg.com) -- Scientists have uncovered a new role played by Vitamin C in protecting the skin. http://www.physorg.com/news171707493.html Medicine & Health Wed, 09 Sep 2009 09:44:01 EST news171707493 Got high cholesterol? You might want to consider a bone density test. A new UCLA study sheds light on the link between high cholesterol and osteoporosis and identifies a new way that the body's immune cells play a role in bone loss. http://www.physorg.com/news170341957.html Medicine & Health Mon, 24 Aug 2009 14:13:17 EST news170341957 A new study from the University of Missouri may shed light on how to increase the level and quality of activity in the elderly. In the study, published in this week's edition of Public Library of Science - ONE, MU researchers found that gene therapy with a proven "longevity" gene energized mice during exercise, and might be applicable to humans in the future. http://www.physorg.com/news169915661.html Medicine & Health Wed, 19 Aug 2009 16:10:02 EST news169915661 Heart attack survivors who eat chocolate two or more times per week cut their risk of dying from heart disease about threefold compared to those who never touch the stuff, scientists have reported. http://www.physorg.com/news169378547.html Medicine & Health Thu, 13 Aug 2009 10:36:46 EST news169378547 Stephania Cormier, PhD, Associate Professor of Pharmacology at LSU Health Sciences Center New Orleans, has shown for the first time that early exposure to environmentally persistent free radicals (present in airborne ultrafine particulate matter) affects long-term lung function. She recently presented her latest research data at the 11th International Congress on Combustion By-Products and Their Health Effects at the Environmental Protection Agency Conference Center in Research Triangle Park, N.C. http://www.physorg.com/news167492706.html Medicine & Health Wed, 22 Jul 2009 14:45:41 EST news167492706 Researchers from Boston University School of Medicine (BUSM) and collaborators have discovered and analyzed several new compounds, collectively called the ''EUK-400 series,'' which could someday be used to prevent radiation-induced injuries to kidneys, lungs, skin, intestinal tract and brains of radiological terrorism victims. The findings, which appear in the June issue of the Journal of Biological Inorganic Chemistry, describe new agents which can be given orally in pill form, which would more expedient in an emergency situation. http://www.physorg.com/news166441850.html Chemistry Fri, 10 Jul 2009 10:51:12 EST news166441850 One of nature's most gripping feats of survival is now better understood. For the first time, scientists from the U.S. Department of Energy's Lawrence Berkeley National Laboratory observed the chemical changes in individual cells that enable them to survive conditions that should kill them. http://www.physorg.com/news166195237.html Chemistry Tue, 07 Jul 2009 14:50:01 EST news166195237 (PhysOrg.com) -- Oxidative stress has been linked to aging, cancer and other diseases in humans. Paradoxically, researchers have suggested that small exposure to oxidative conditions may actually offer protection from acute doses. Now, scientists at the University of California, San Diego, have discovered the gene responsible for this effect. Their study, published in PLoS Genetics on May 29, explains the underlying mechanism of the process that prevents cellular damage by reactive oxygen species (ROS). http://www.physorg.com/news162797155.html Medicine & Health Fri, 29 May 2009 06:26:23 EST news162797155 By lending them a gene normally reserved for other classes of animals, researchers have shown they can rescue flies from their Parkinson's-like symptoms, including movement defects and excess free radicals produced in power-generating cellular components called mitochondria. The gene swap also protects healthy flies' mitochondria, and to a large extent the flies themselves, from the damaging effects of cyanide and other toxins, the team reports in the May issue of Cell Metabolism, a Cell Press publication. http://www.physorg.com/news160752389.html Biology Tue, 05 May 2009 14:27:31 EST news160752389 Children exposed to cigarette smoke have lower levels of antioxidants, which help the body defend itself against many biological stresses. http://www.physorg.com/news160668987.html Medicine & Health Mon, 04 May 2009 15:16:51 EST news160668987 (PhysOrg.com) -- Stress can be adaptive. It can make you sharper, help you focus and it can even improve your performance. But too much of it can tax cells to the point where they can no longer cope and slowly self-destruct. Scientists at Rockefeller University now show that when the protein-making factory of the cell is exposed to moderate stress, neurons in the fruit fly retina and other cells not only resist death but also shore up their defenses against damaging free radicals and ultraviolet radiation. http://www.physorg.com/news160159407.html Medicine & Health Tue, 28 Apr 2009 17:43:48 EST news160159407 Scientists at the Wake Forest University School of Medicine, the University of Manchester in the United Kingdom, and the Virginia Bioinformatics Institute at Virginia Tech have taken the first steps toward constructing a systems biology map of iron metabolism. The team has put together a general network of chemicals and reactions important for the many steps and reactions that constitute iron metabolism. http://www.physorg.com/news160135994.html Chemistry Tue, 28 Apr 2009 11:13:49 EST news160135994 New research shows that human teeth lost some enamel hardness after the application of several different products used in the home to whiten teeth. The study suggests that future generations of such products might be reformulated in an effort to reduce these side effects. http://www.physorg.com/news158928022.html Medicine & Health Tue, 14 Apr 2009 11:41:13 EST news158928022 Scientists have pinned down the constituent of olive oil that gives greatest protection from heart attack and stroke. In a study of the major antioxidants in olive oil, Portuguese researchers showed that one, DHPEA-EDA, protects red blood cells from damage more than any other part of olive oil. http://www.physorg.com/news157870667.html Medicine & Health Thu, 02 Apr 2009 05:58:26 EST news157870667 Rapid growth of cancer cells and their frequent divisions have their price: Cancer cells need considerably more energy than healthy cells. Their metabolism runs at full speed and requires large amounts of micronutrients, particularly iron. However, high levels of iron in the cell lead to the production of extremely harmful free radicals. To protect itself from these, the cell inactivates free iron by binding it to what are called iron storage proteins. http://www.physorg.com/news155983349.html Medicine & Health Wed, 11 Mar 2009 09:58:28 EST news155983349 Here's another reason to eat your broccoli: UCLA researchers report that a naturally occurring compound found in broccoli and other cruciferous vegetables may help protect against respiratory inflammation that causes conditions like asthma, allergic rhinitis and chronic obstructive pulmonary disease. http://www.physorg.com/news155229657.html Medicine & Health Mon, 02 Mar 2009 15:21:16 EST news155229657 For more than 40 years, the prevailing explanation of why we get old has been tied to what is called oxidative stress. This theory postulates that when molecules like free radicals, oxygen ions and peroxides build up in cells, they overwhelm the cells` ability to repair the damage they cause, and the cells age. http://www.physorg.com/news154117063.html Biology Tue, 17 Feb 2009 18:18:36 EST news154117063 A paper co-authored by Beatrice Golomb, MD, PhD, associate professor of medicine at the University of California, San Diego School of Medicine and director of UC San Diego's Statin Study group cites nearly 900 studies on the adverse effects of HMG-CoA reductase inhibitors (statins), a class of drugs widely used to treat high cholesterol. http://www.physorg.com/news152273287.html Medicine & Health Tue, 27 Jan 2009 10:08:38 EST news152273287 (PhysOrg.com) -- Carotenoids not only give carrots and red smear cheeses, such as Munster, Limburger, and Romadur, their characteristic red color, but they also protect organisms from oxidative stress. A research team headed by Hans-Dieter Martin and Wilhelm Stahl at the University of Düsseldorf has now synthesized and characterized one of these carotenoids in the lab. As they report in the journal Angewandte Chemie, this compound is characterized by outstanding antioxidative and photoprotective properties. http://www.physorg.com/news148544053.html Chemistry Mon, 15 Dec 2008 06:14:13 EST news148544053 Working with genetically engineered mice, researchers at Johns Hopkins have shown that daily doses of a standardized extract from the leaves of the ginkgo tree can prevent or reduce brain damage after an induced stroke. http://www.physorg.com/news142791662.html Medicine & Health Thu, 09 Oct 2008 17:21:02 EST news142791662 Chemical concoctions can smooth over wrinkles and hide those pesky grays, but what about the signs of aging that aren't so easy to fix, such as losing muscle mass? Cutting calories early could help, say University of Florida researchers who studied the phenomenon in rats. http://www.physorg.com/news140800853.html Medicine & Health Tue, 16 Sep 2008 16:20:53 EST news140800853 A Monash University scientist has discovered key appetite control cells in the human brain degenerate over time, causing increased hunger and potentially weight-gain as we grow older. http://www.physorg.com/news138535131.html Medicine & Health Thu, 21 Aug 2008 10:58:51 EST news138535131 A previously unrecognized group of air pollutants could have effects remarkably similar to harmful substances found in tobacco smoke, Louisiana scientists are reporting in a study scheduled for presentation today at the 236th National Meeting of the American Chemical Society. Inhaling those pollutants exposes the average person up to 300 times more free radicals daily than from smoking one cigarette, they added. http://www.physorg.com/news138201201.html Chemistry Sun, 17 Aug 2008 14:13:21 EST news138201201 Blueberries, pomegranates, green tea and dark chocolate -- these are just some of the antioxidant-rich "superfoods" found in almost any supermarket today. As well as improving our general health, there is growing evidence that diets high in antioxidants may confer some protection against a long list of chronic diseases, including Alzheimer's disease, cancer and even HIV. Given their increasing popularity, the fundamental question bears asking: What exactly are antioxidants, and how do they work in our bodies? http://www.physorg.com/news136819469.html Medicine & Health Fri, 01 Aug 2008 14:24:29 EST news136819469 Researchers at Yale School of Medicine have found the brain's appetite center uses fat for fuel by involving oxygen free radicals -molecules associated with aging and neurodegeneration. The findings, reported in the journal Nature, suggest that antioxidants could play a role in weight control. http://www.physorg.com/news136641838.html Medicine & Health Wed, 30 Jul 2008 13:03:58 EST news136641838