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. Researchers at the University of Gothenburg, Sweden, have identified two genes believed to play a role in the development of endometrial cancer. These results may eventually lead to better diagnosis and treatment of this increasingly common form of cancer. http://www.physorg.com/news174660705.html Medicine & Health Tue, 13 Oct 2009 14:10:01 EST news174660705 If you have ever taken a long road trip, the windshield of your car will inevitably be splattered with bugs by the time you arrive at your destination. Could the DNA left behind be used to estimate the diversity of insects in the region? In a study published online in Genome Research, scientists answered this question, utilizing a novel analysis pipeline that will accelerate future studies of biodiversity. http://www.physorg.com/news174244985.html Biology Thu, 08 Oct 2009 18:50:01 EST news174244985 (PhysOrg.com) -- Using an RNA-powered nanomotor, University of Cincinnati (UC) biomedical engineering researchers have successfully developed an artificial pore able to transmit nanoscale material through a membrane. http://www.physorg.com/news173367207.html Nanotechnology Mon, 28 Sep 2009 14:33:52 EST news173367207 (PhysOrg.com) -- It was the "yuck factor" of reclaimed water that got Karyna Rosario thinking. As communities increasingly turn to reclaimed water as a source for irrigation - and some communities consider using it for drinking water - Rosario, a PhD student at USF`s College of Marine Science, became increasingly curious about exactly what viruses are present in reclaimed water. http://www.physorg.com/news173351209.html Biology Mon, 28 Sep 2009 10:20:01 EST news173351209 (PhysOrg.com) -- A new red-fruited habanero is the latest pepper with resistance to root-knot nematodes to be released by Agricultural Research Service (ARS) scientists. http://www.physorg.com/news172920922.html Biology Wed, 23 Sep 2009 11:10:03 EST news172920922 (PhysOrg.com) -- A tiny bit of genetic material with no previously known function may hold the key to stopping the spread of cancer, researchers at Yale School of Medicine and Sichuan University in Chengdu, China report in two papers in the September 7-11 issue of Proceedings of the National Academy of Sciences. http://www.physorg.com/news171895852.html Medicine & Health Fri, 11 Sep 2009 13:53:00 EST news171895852 (AP) -- Like so many great discoveries, it was an accident. British scientist Alec Jeffreys realized 25 years ago Thursday that individuals have "DNA fingerprints," unique patterns of genetic material that can be used to identify them. The discovery has solved thousands of crimes, put murderers behind bars, split and reunited families - and launched a fierce debate about privacy and human rights. http://www.physorg.com/news171801434.html Medicine & Health Thu, 10 Sep 2009 11:41:00 EST news171801434 When the first cases of H1N1 Influenza (swine flu) were reported in Mexico in April, UQ researchers got to work developing a test to diagnose the virus. http://www.physorg.com/news171193543.html Medicine & Health Thu, 03 Sep 2009 11:20:03 EST news171193543 A process that limits the number of times a cell divides works much differently than had been thought, opening the door to potential new anticancer therapies, researchers at UT Southwestern Medical Center report in the Aug. 7 issue of the journal Cell. http://www.physorg.com/news171026279.html Medicine & Health Tue, 01 Sep 2009 12:18:25 EST news171026279 (PhysOrg.com) -- Could viruses be good for you? Scientists with the Agricultural Research Service (ARS) have shown that enzymes from bacteria-infecting viruses known as phages could have beneficial applications for human and animal health. http://www.physorg.com/news170924697.html Biology Mon, 31 Aug 2009 08:05:24 EST news170924697 Research, discovery and publishing in a prestigious journal are not as easy as 1-2-3. However, an outstanding mentor and a well-equipped lab made this feat possible for doctoral student Fei Jiang. http://www.physorg.com/news170619661.html Biology Thu, 27 Aug 2009 20:00:01 EST news170619661 Small interfering RNA (siRNA), a type of genetic material, can block potentially harmful activity in cells, such as tumor cell growth. But delivering siRNA successfully to specific cells without adversely affecting other cells has been challenging. http://www.physorg.com/news170600432.html Biology Thu, 27 Aug 2009 14:10:01 EST news170600432 Researchers in Singapore are reporting development of a new electronic sensor that shows promise as a faster, less expensive, and more practical alternative than tests now used to detect DNA. Such tests are done for criminal investigation, disease diagnosis, and other purposes. The new lab-on-a-chip test could lead to wider, more convenient use of DNA testing, the researchers say. Their study is scheduled for the Sept. 2 issue of the Journal of the American Chemical Society. http://www.physorg.com/news170502528.html Chemistry Wed, 26 Aug 2009 10:49:15 EST news170502528 A specific gene is particularly frequently involved in the development of short stature. Researchers in Heidelberg have now discovered that sequences of genetic material on the X and Y chromosome that regulate this gene are also crucial for growth in children. These gene regulators determine how frequently a gene is copied, thus how effective it is. In many cases, the mutation of one regulatory sequence of the SHOX gene is sufficient to give rise to the full-blown syndrome. http://www.physorg.com/news170420580.html Medicine & Health Tue, 25 Aug 2009 12:30:06 EST news170420580 (PhysOrg.com) -- In its fight against an intruding virus, an enzyme in our immune system may sense certain types of viral RNA pairs, according to scientists. http://www.physorg.com/news168619740.html Biology Tue, 04 Aug 2009 16:40:01 EST news168619740 In many types of cancer, parts of the genetic material of tumor cells are switched off by chemical labels called methyl groups. This kind of methyl labeling ranges among the epigenetic changes that do not change the sequence of DNA building blocks. Such labels are found particularly often in genes which act as important inhibitors of pathogenic cell growth. http://www.physorg.com/news168608350.html Medicine & Health Tue, 04 Aug 2009 12:50:01 EST news168608350 Transposons are mobile genetic elements found in the hereditary material of humans and other organisms. They can replicate and the new copies can insert at novel sites in the genome. Because this threatens the whole organism, molecular mechanisms have evolved which can repress transposon activity. http://www.physorg.com/news168263512.html Biology Fri, 31 Jul 2009 13:10:01 EST news168263512 (PhysOrg.com) -- Researchers at the University of Rochester Medical Center have found a way to block the genetic flaw at the heart of a common form of muscular dystrophy. The results of the study, which were published today in the journal Science, could pave the way for new therapies that essentially reverse the symptoms of the disease. http://www.physorg.com/news166974009.html Medicine & Health Thu, 16 Jul 2009 15:30:07 EST news166974009 (PhysOrg.com) -- For perhaps 1.8 billion years after life first emerged on Earth, a sort of evolutionary writer`s block stalled the development of organisms more complicated than single cells. Then, a burst of experimental creativity about 1.7 billion years ago brought the cell nucleus onto the scene, stashing the cell`s genetic material inside a protective inner membrane and setting the stage for the evolution of more sophisticated creatures from yeast, say, to plants and human beings. Now research shows that one of the most basic design principles of this new eukaryotic life-form - the gatekeeper to the cell nucleus known as the nuclear pore complex - is largely shared across the most distantly related eukaryotes. Its core components likely evolved once and for all and would be found in the nuclear pore complex of what is known as the last common eukaryotic ancestor. http://www.physorg.com/news166722019.html Chemistry Mon, 13 Jul 2009 17:00:02 EST news166722019 (PhysOrg.com) -- K-fibers, structures long thought to play a key role in the alignment of chromosomes prior to cell division, are not required after all, say Indiana University and New York State Department of Health scientists. http://www.physorg.com/news166113443.html Biology Mon, 06 Jul 2009 16:10:01 EST news166113443 Pinpointing the genes involved in human brain cancer can be like looking for a needle in a haystack, and sometimes the needle you find may not be the right one. By comparing human and canine genomes, researchers at North Carolina State University have discovered that a gene commonly believed to be involved in meningiomas-tumors that affect the meninges, or thin covering, of the human brain and account for one out of four adult brain tumors -may not be as key for tumor formation as previously thought, and they've narrowed the search for the real culprit. http://www.physorg.com/news166105992.html Medicine & Health Mon, 06 Jul 2009 13:33:47 EST news166105992 (PhysOrg.com) -- It is now possible to engineer tiny containers the size of a virus to deliver drugs and other materials with almost 100 percent efficiency to targeted cells in the bloodstream. http://www.physorg.com/news165158410.html Nanotechnology Thu, 25 Jun 2009 14:20:47 EST news165158410 (PhysOrg.com) -- Effective drugs for treating a chemotherapy-resistant form of lymphoma might already be on the market according to a study that has pieced together a chemical pathway involved in the disease. http://www.physorg.com/news165085198.html Medicine & Health Wed, 24 Jun 2009 22:00:01 EST news165085198 Scientists at the European Molecular Biology Laboratory (EMBL) and the University Clinic Heidelberg, Germany, have produced a three-dimensional reconstruction of HIV (Human Immunodeficiency Virus), which shows the structure of the immature form of the virus at unprecedented detail. http://www.physorg.com/news164974015.html Medicine & Health Tue, 23 Jun 2009 11:07:17 EST news164974015 New research by scientists at The Scripps Research Institute and other institutions provides a close-up look at the cone-shaped shell that is the hallmark of human immunodeficiency virus (HIV), revealing how it is held together -and possible ways to break it apart. http://www.physorg.com/news164037605.html Biology Fri, 12 Jun 2009 16:30:01 EST news164037605 The woolly mammoth died out several thousand years ago, but the genetic material they left behind is yielding new clues about the evolution of mammals. In a study published online in Genome Research, scientists have analyzed the mammoth genome looking for mobile DNA elements, revealing new insights into how some of these elements arose in mammals and shaped the genome of an animal headed for extinction. http://www.physorg.com/news163700353.html Biology Mon, 08 Jun 2009 17:21:27 EST news163700353 Linking genetic material microRNAs with cells that regulate the immune system could one day lead to new therapies for treating cancer, infections and autoimmune diseases, according to a Henry Ford Hospital study. http://www.physorg.com/news163096621.html Medicine & Health Mon, 01 Jun 2009 17:37:37 EST news163096621 Researchers from the Ludwig Institute for Cancer Research at the University of California, San Diego School of Medicine have uncovered a remarkable property of the contractile ring, a structure required for cell division. Understanding how the contractile ring works to divide the cell may facilitate development of therapies to prevent uncontrolled cell division in cancer. http://www.physorg.com/news162734567.html Medicine & Health Thu, 28 May 2009 13:04:04 EST news162734567 (PhysOrg.com) -- First, Cornell researchers created DNA "bar codes" -- strands of the genetic material that quickly identify the presence of different molecules by fluorescing. Now, they have created new DNA molecules that can detect pathogens and deliver drugs to cells when they form long chains called polymers. http://www.physorg.com/news162057240.html Nanotechnology Wed, 20 May 2009 16:54:41 EST news162057240 (PhysOrg.com) -- Using DNA not as a genetic material but as a structural support, Cornell researchers have created thin sheets of gold nanoparticles held together by strands of DNA. The work could prove useful for making thin transistors or other electronic devices. http://www.physorg.com/news162056919.html Nanotechnology Wed, 20 May 2009 16:49:21 EST news162056919