http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Researchers from The Wistar Institute explain a new molecular mechanism behind the phenomenon of oncogene-induced senescence. By depriving the cell of the ability to make new nucleotides—the building blocks of DNA molecules—cells can suppress cancer development by forcing a damaged cell into a senescent state, where the cell remains alive yet cannot reproduce. http://medicalxpress.com/news/2013-04-dna-senescence-halts-growth-potential.html Cancer Thu, 04 Apr 2013 12:50:09 EST news284298599 With a desire to inhibit metastasis, Cornell biomedical engineers have found the natural switch between the body's inflammatory response and how malignant breast cancer cells use the bloodstream to spread. http://medicalxpress.com/news/2013-01-bioengineers-natural-breast-cancer-cells.html Cancer Wed, 23 Jan 2013 17:29:53 EST news278184587 In a study published in the January 18 issue of Cell, researchers from the University of North Carolina Lineberger Comprehensive Cancer Center have developed a new method to visualize aging and tumor growth in mice using a gene closely linked to these processes. http://medicalxpress.com/news/2013-01-scientists-luminescent-mice-track-cancer.html Medical research Thu, 17 Jan 2013 13:01:58 EST news277650107 A new study from engineering researchers at Rensselaer Polytechnic Institute shows, for the first time, how the little-understood protein osteocalcin plays a significant role in the strength of our bones. The findings could lead to new strategies and therapeutics for fighting osteoporosis and lowering the risk of bone fracture. http://medicalxpress.com/news/2012-12-brittle-bones-broccoli-spinach.html Medical research Tue, 11 Dec 2012 13:12:40 EST news274453912 Researchers of the Swedish medical university Karolinska Institutet and the University of Cologne, Germany, have identified a new protein involved in a defense mechanism against cancer. The VCP/p97 complex is best known for its role in protein destruction and is involved in a type of familial dementia and ALS. In a novel study the researchers now describe how this complex also plays an important role in regulating the recruitment of the tumor suppressor protein 53BP1 to damaged DNA – suggesting an important role for VCP/p97 in our body's defense against cancer. http://medicalxpress.com/news/2011-11-unexpected-player-cancer-defense.html Cancer Mon, 28 Nov 2011 13:54:06 EST news241710835 Although scientists have known for centuries that many bacteria produce hydrogen sulfide (H2S) it was thought to be simply a toxic by-product of cellular activity. Now, researchers at NYU School of Medicine have discovered H2S in fact plays a major role in protecting bacteria from the effects of numerous different antibiotics. http://medicalxpress.com/news/2011-11-bacterial-gas-defenses-efficacy-numerous.html Medical research Thu, 17 Nov 2011 15:28:37 EST news240766107 (Medical Xpress) -- In lab studies, researchers at Virginia Commonwealth University Massey Cancer Center have effectively reprogrammed cells of the innate and adaptive immune system to overcome a key cancer defense mechanism and develop long-lasting memory to reject breast cancer cells and guard against tumor relapse. http://medicalxpress.com/news/2011-09-barrier-cancer-immunotherapy.html Cancer Fri, 02 Sep 2011 09:26:40 EST news234174367 Groundbreaking research encompassing Case Western Reserve University School of Medicine and University Hospitals Case Medical Center, has uncovered a natural defense mechanism that is capable of inactivating the toxin that spreads Clostridium difficile, or C. diff, an increasingly common bacterial infection in hospitals and long-term care settings. The research has immediate implications for developing a new form of treatment for antibiotic-resistant bacteria. http://medicalxpress.com/news/2011-08-newly-cell-mechanism-amplified-nitric.html Diseases, Conditions, Syndromes Sun, 21 Aug 2011 13:00:15 EST news233150210 Researchers at Duke University Medical Center have discovered a way to block the damaging actions of Chlamydia, the bacteria responsible for the largest number of sexually transmitted infections in the United States. http://medicalxpress.com/news/2011-07-newly-molecule-blocks-chlamydia-bacteria.html Medical research Wed, 20 Jul 2011 12:33:42 EST news230384010 Engineers investigating "listener fatigue"-- the discomfort and pain some people experience while using in-ear headphones, hearing aids, and other devices that seal the ear canal from external sound -- have found not only what they believe is the cause, but also a potential solution. http://medicalxpress.com/news/2011-05-device-roots-dangers-personal-devices.html Medical research Fri, 13 May 2011 03:52:02 EST news224477500