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. Low levels of vitamin D may account for nearly 60 percent of the elevated risk of end-stage renal disease (ESRD) in African Americans, according to a report in the December Journal of the American Society of Nephrology (JASN). "Our study adds to previous evidence linking vitamin D deficiency to the progression of kidney disease and the need for dialysis," comments Michal L. Melamed, MD, of Albert Einstein College of Medicine (Bronx, NY). "It also explains a fair amount of the increased risk of ESRD in African Americans." Vitamin D is obtained from sun exposure, food and food supplements. http://www.physorg.com/news176056580.html Medicine & Health Thu, 29 Oct 2009 18:10:02 EST news176056580 For 14 long months, Daniel Steinhauer could not eat or drink, due to the side effects of throat cancer surgery and radiation. http://www.physorg.com/news169309821.html Medicine & Health Wed, 12 Aug 2009 15:40:02 EST news169309821 In recent years, oncologists have debated whether patients with a certain type of advanced lung cancer would benefit from surgery. http://www.physorg.com/news167903309.html Medicine & Health Mon, 27 Jul 2009 08:48:58 EST news167903309 Research published today in Science Express from the journal Science demonstrates the first definitive link between mutations in the gene DICER1 and cancer. By studying the patterns of DNA from 11 families with an unusual predisposition to the rare childhood lung cancer pleuropulmonary blastoma (PPB) investigators found that children with the cancer carried a mutation in one of their two DICER1 gene copies. http://www.physorg.com/news165168698.html Medicine & Health Thu, 25 Jun 2009 20:20:01 EST news165168698 It is the concentration of a few signaling molecules that determines the fate of individual cells during the early development of organisms. In the renowned journal Current Biology, a team of molecular biologists led by Pia Aanstad of the University of Innsbruck reports that a variety of molecular mechanisms accounts for the interpretation of the concentration of the signaling molecule Hedgehog. http://www.physorg.com/news162215335.html Biology Fri, 22 May 2009 12:49:30 EST news162215335 Reporting online in the American Journal of Pathology, researchers from the Kimmel Cancer Center at Jefferson have implicated the loss of a stromal protein called caveolin-1 as a major new prognostic factor in patients with breast cancer, predicting early disease recurrence, metastasis and breast cancer patient survival. http://www.physorg.com/news160833169.html Medicine & Health Wed, 06 May 2009 12:54:10 EST news160833169 Researchers at the Hebrew University of Jerusalem have discovered a method to potentially eliminate the tumor-risk factor in utilizing human embryonic stem cells. http://www.physorg.com/news160816468.html Medicine & Health Wed, 06 May 2009 08:17:09 EST news160816468 Higher doses of radiation combined with chemotherapy improve survival in patients with stage III lung cancer, according to a new study by researchers at the University of Michigan Comprehensive Cancer Center. http://www.physorg.com/news158409811.html Medicine & Health Wed, 08 Apr 2009 11:44:02 EST news158409811 Despite enduring more invasive tests and medical procedures, patients who were treated aggressively for early stage bladder cancer had no better survival than patients who were treated less aggressively. Further, the aggressively treated patients were more likely to undergo major surgery to have their bladder removed, according to a new study from researchers at the University of Michigan Comprehensive Cancer Center. http://www.physorg.com/news158345682.html Medicine & Health Tue, 07 Apr 2009 17:55:21 EST news158345682 The biology of ovarian cancers discovered at an early stage may render them slower growing and less likely to spread than more aggressive cancers, which typically are discovered in an advanced stage, according to a study led by investigators in the Duke Comprehensive Cancer Center. This finding has implications for the question of whether screening for ovarian cancer could save lives. http://www.physorg.com/news157122604.html Medicine & Health Tue, 24 Mar 2009 14:10:37 EST news157122604 (PhysOrg.com) -- The final pieces of the Ares I-X flight test rocket left the Alliant Tech Systems manufacturing facility in Promontory, Utah, Thursday and began a 2,917-mile journey to its launch site at NASA's Kennedy Space Center in Florida. http://www.physorg.com/news156179269.html Space & Earth Fri, 13 Mar 2009 16:08:59 EST news156179269 (PhysOrg.com) -- With liftoff just five days away, ESA's GOCE spacecraft - encased in the protective half-shells of the launcher fairing - has been transported from the cleanroom and installed in the launch tower at the Plesetsk Cosmodrome in northern Russia. http://www.physorg.com/news156008237.html Space & Earth Wed, 11 Mar 2009 16:38:39 EST news156008237 (PhysOrg.com) -- NASA has completed a successful test firing of the igniter that will be used to start the Ares I rocket first stage motor. http://www.physorg.com/news155923882.html Space & Earth Tue, 10 Mar 2009 17:12:21 EST news155923882 (PhysOrg.com) -- Missions to space require 'warm' boxes, which protect electronic circuitry from extreme temperatures and exposure to radiation. Electrical engineering researchers at the University of Arkansas have designed and successfully tested an electronic micro amplifier that can operate directly in the space environment without protection from a warm box. http://www.physorg.com/news155847462.html Technology Mon, 09 Mar 2009 19:58:43 EST news155847462 Pathologists today reported encouraging results from a new technique to increase the accuracy of staging bladder cancer tumors that could reduce the need to remove bladders from some patients. http://www.physorg.com/news155811530.html Medicine & Health Mon, 09 Mar 2009 10:14:48 EST news155811530 (PhysOrg.com) -- NASA and industry engineers successfully completed the second drop test of a drogue parachute for the Ares I rocket. The test took place Feb. 28 at the U.S. Army's Yuma Proving Ground near Yuma, Ariz. http://www.physorg.com/news155234526.html Space & Earth Mon, 02 Mar 2009 16:43:22 EST news155234526 Stem cells of any kind are defined by their eternal nature, reproducing themselves and providing a pool of cells from which more differentiated tissues arise. http://www.physorg.com/news153059571.html Biology Thu, 05 Feb 2009 12:33:13 EST news153059571 (PhysOrg.com) -- The development of NASA's next-generation crew launch vehicle, the Ares I rocket, took another step forward Thursday as Alliant Techsystems, or ATK, successfully tested a critical piece. ATK conducted a full-scale separation test of the forward skirt extension for the Ares I-X flight test at its facility in Promontory, Utah. http://www.physorg.com/news152543648.html Space & Earth Fri, 30 Jan 2009 13:14:41 EST news152543648 Online support communities appear to offer both a valuable educational resource and a source of psychological and social support for individuals with psoriasis, according to a report in the January issue of Archives of Dermatology, one of the JAMA/Archives journals. http://www.physorg.com/news151610118.html Medicine & Health Mon, 19 Jan 2009 17:56:06 EST news151610118 African-American patients with colorectal were more likely to present with worse pathological features at diagnosis and to have a worse five-year survival rate compared to Caucasian patients, according to a study conducted by researchers at Thomas Jefferson University. http://www.physorg.com/news151344749.html Medicine & Health Fri, 16 Jan 2009 16:12:29 EST news151344749 Avoiding detection just got harder for drug cheats who try to use a particular range of untested, but potentially enhancing, compounds. In the past, tests have been developed once a drug is known to be in circulation. Now a German research team has developed tests for a class of drugs that they believe could be used in the near future. http://www.physorg.com/news150616173.html Medicine & Health Thu, 08 Jan 2009 05:49:33 EST news150616173 (PhysOrg.com) -- Yesterday evening, an Ariane 5 ECA launcher lifted off from Europe`s Spaceport at Kourou, in French Guiana, on its mission to place two multi-role telecommunications satellites into geostationary transfer orbits. http://www.physorg.com/news149052938.html Space & Earth Sun, 21 Dec 2008 03:35:38 EST news149052938 Research out of the Ireland Cancer Center of University Hospitals Case Medical Center has found that the vast majority of triple negative breast cancers express the MUC-1 target. This first-of-its-kind finding, presented today at the San Antonio Breast Cancer Symposium, has paved the way for an upcoming vaccine trial for patients with early stage triple negative breast cancer that could potentially prevent recurrence of this aggressive type of breast cancer. http://www.physorg.com/news148315876.html Medicine & Health Fri, 12 Dec 2008 14:51:16 EST news148315876 Scientists working on a common antimicrobial compound with antimalarial activity have discovered a range of new therapeutic strategies to combat malaria. The research, published by Cell Press in the December 11th issue of the journal Cell Host and Microbe, provides valuable insight into how the human malaria parasite's requirement for fatty acids can be exploited as it progresses through the distinct stages of its complex life cycle. http://www.physorg.com/news148136194.html Biology Wed, 10 Dec 2008 12:56:34 EST news148136194 Those diagnosed with early stage dementia can slow their physical, mental and psychological decline by taking part in therapeutic programs that combine counseling, support groups, Taiji and qigong, researchers report. Some of the benefits of this approach are comparable to those achieved with anti-dementia medications. http://www.physorg.com/news147631818.html Medicine & Health Thu, 04 Dec 2008 16:50:18 EST news147631818 Chronic pancreatitis (CP) is a chronic clinical disorder characterized by irreversible damage to the pancreas, the development of histologic evidence of inflammation and fibrosis, and eventually the destruction and permanent loss of exocrine and endocrine tissue. Imaging or function tests may not reveal early CP, and the results of these tests do not necessarily correlate with each other. http://www.physorg.com/news147352040.html Medicine & Health Mon, 01 Dec 2008 11:07:20 EST news147352040 Researchers in the Duke Institute for Genome Sciences & Policy have developed a model for predicting risk of recurrence in early stage colon cancer patients, and have used the model to also predict sensitivity to chemotherapy and targeted therapy regimens. http://www.physorg.com/news146768991.html Medicine & Health Mon, 24 Nov 2008 17:09:51 EST news146768991 (PhysOrg.com) -- NASA's newest high-performance rocket engine, the J-2X, successfully completed its critical design review Thursday at NASA's Marshall Space Flight Center in Huntsville, Ala. http://www.physorg.com/news145881785.html Space & Earth Fri, 14 Nov 2008 10:43:05 EST news145881785 (PhysOrg.com) -- The first major flight hardware of the Ares I-X rocket has arrived in Florida to begin preparation for the inaugural test flight of the agency's next-generation launch system. The test flight is targeted for July 12, 2009. http://www.physorg.com/news145026120.html Space & Earth Tue, 04 Nov 2008 13:02:00 EST news145026120 Expression of Livin in fresh esophageal cancer tissues was detected by immunohistochemistry (IHC), Western blotting and reverse transcriptase-polymerase chain reaction (RT-PCR), VEGF by Its correlation Western blotting and RT-PCR. Livin positivity was also significantly correlated with tumor stages, increasing with tumor progression. Expression of Livin and VEGF increased with the process of esophageal carcinoma. In the fourth clinical stage, expression of Livin and VEGF was the most significant. Expression of Livin was positive correlation with VEGF. Over-expression of Livin and VEGF contributes to the pathogenesis of esophageal carcinoma. http://www.physorg.com/news144496061.html Medicine & Health Wed, 29 Oct 2008 10:47:41 EST news144496061