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. (PhysOrg.com) -- Gene therapy holds promise in the treatment of cancer as well as a large number of other diseases. However, developing a scalable system for delivering genes to cells both efficiently and safely has been challenging. Now, two teams of researchers have developed versatile nanotechnology-enabled platforms that could get therapeutic genes safely and efficiently into cancer cells. http://www.physorg.com/news173102090.html Nanotechnology Fri, 25 Sep 2009 12:55:22 EST news173102090 (PhysOrg.com) -- Small pieces of nucleic acid known as short interfering RNAs, or siRNAs, can turn off the production of specific proteins, a property that makes them one of the more promising new classes of anticancer drugs in development. Indeed, at least two siRNA-based anticancer therapies, both delivered to tumors in nanoparticles, have begun human clinical trials. http://www.physorg.com/news172951531.html Nanotechnology Wed, 23 Sep 2009 19:06:33 EST news172951531 The commercial failure of Exubera (Pfizer, New York, NY), the first inhaled insulin product to come to market, led other companies such as Eli Lilly-Alkermes to halt studies of similar drug delivery in development intended to compete for a share of the lucrative diabetes market. Does this signal defeat for efforts to deliver insulin via the lungs? The science and circumstances behind the Lilly-Alkermes decision to discontinue trials of the AIR inhaled insulin product are explored in a special supplement to Diabetes Technology & Therapeutics. http://www.physorg.com/news172925911.html Medicine & Health Wed, 23 Sep 2009 12:20:02 EST news172925911 (PhysOrg.com) -- Biomedical researchers suspect graphene, a novel nanomaterial made of sheets of single carbon atoms, would be useful in a variety of applications. But no one had studied the interaction between graphene and DNA, the building block of all living things. To learn more, PNNL's Zhiwen Tang, Yuehe Lin and colleagues from both PNNL and Princeton University built nanostructures of graphene and DNA. http://www.physorg.com/news172896200.html Nanotechnology Wed, 23 Sep 2009 03:43:56 EST news172896200 A ranking of obstetrics and gynecology training programs based on the maternal complication rates of their graduates' patients found these rankings consistent across individual types of complications, suggesting that these rates may reflect measures of overall quality, according to a study in the September 23/30 issue of JAMA, a theme issue on medical education. http://www.physorg.com/news172856490.html Medicine & Health Tue, 22 Sep 2009 17:50:05 EST news172856490 Premature births have increased significantly although survival rates of babies born early have improved dramatically, a study shows. http://www.physorg.com/news172818868.html Medicine & Health Tue, 22 Sep 2009 16:20:03 EST news172818868 An innovative drug-delivery system - nanoparticles encapsulating nitric oxide or prescription drugs - shows promise for topical treatment of erectile dysfunction (ED), according to a new study by scientists at Albert Einstein College of Medicine of Yeshiva University. http://www.physorg.com/news172562185.html Nanotechnology Sat, 19 Sep 2009 06:57:39 EST news172562185 (PhysOrg.com) -- A new study by McMaster University researchers has found low-risk women who have midwives in attendance during birth have positive outcomes regardless of where the delivery takes place. http://www.physorg.com/news172502894.html Medicine & Health Fri, 18 Sep 2009 23:30:01 EST news172502894 (PhysOrg.com) -- Many medical conditions, such as chronic pain, cancer and diabetes, require medications that cannot be taken orally, but must be dosed intermittently, on an as-needed basis, over a long period of time. A few delivery techniques have been developed, using an implanted heat source, an implanted electronic chip or other stimuli as an "on-off" switch to release the drugs into the body. But thus far, none of these methods can reliably do all that's needed: repeatedly turn dosing on and off, deliver consistent doses and adjust doses according to the patient's need. http://www.physorg.com/news172486374.html Nanotechnology Fri, 18 Sep 2009 10:40:01 EST news172486374 (PhysOrg.com) -- The same properties of nanoparticles that make them so appealing to manufacturers may also have negative effects on the environment and human health. However, little is known which particles may be harmful. Part of the problem is determining exactly what a nanoparticle is. http://www.physorg.com/news172072324.html Nanotechnology Sun, 13 Sep 2009 14:52:37 EST news172072324 Researchers at UC Santa Barbara have developed a new way to deliver drugs into cancer cells by exposing them briefly to a non-harmful laser. Their results are published in a recent article in ACS Nano, a journal of the American Chemical Society. http://www.physorg.com/news171807411.html Nanotechnology Thu, 10 Sep 2009 14:10:03 EST news171807411 (PhysOrg.com) -- With its unique double-helical structure, DNA has the ability to be used as a programmable building material to construct designer nanoscale architectures. Complex DNA architectures could have a variety of applications, from DNA-based nanomotors to biosensing and drug delivery. Taking the research a step forward, researchers have recently constructed a nanometer-sized tetrahedron from a single strand of DNA, using a method that could have advantages for assembling similar structures on a large scale. http://www.physorg.com/news171624372.html Nanotechnology Tue, 08 Sep 2009 10:26:49 EST news171624372 Scientists have uncovered new details about how the cells in our bodies communicate with each other and their environment: findings that are of fundamental importance to human biology. http://www.physorg.com/news171611963.html Biology Tue, 08 Sep 2009 06:59:54 EST news171611963 Gene therapy holds promise in the treatment of a myriad of diseases, including cancer, heart disease and diabetes, among many others. However, developing a scalable system for delivering genes to cells both efficiently and safely has been challenging. http://www.physorg.com/news171025686.html Nanotechnology Tue, 01 Sep 2009 12:08:51 EST news171025686 For cancer drug developers, finding an agent that kills tumor cells is only part of the equation. The drug also must spare healthy cells, and ideally its effects will be reversible to cut short any potentially dangerous side effects. Investigators from the University of Illinois at Urbana-Champaign report that they have assembled a new cancer drug delivery system that, in cell culture, achieves all of the above. The findings appear in the journal Angewandte Chemie International Edition. http://www.physorg.com/news170907018.html Nanotechnology Mon, 31 Aug 2009 07:10:01 EST news170907018 (PhysOrg.com) -- Scientists at UC Santa Barbara have discovered a potential new drug delivery system. The finding is a biological mechanism for delivery of nanoparticles into tissue. The results are published in this week's Proceedings of the National Academy of Sciences. http://www.physorg.com/news170419576.html Medicine & Health Tue, 25 Aug 2009 11:46:57 EST news170419576 Television and radio broadcasts used to be free. Stick an antenna in the air and that's still true even though much of it has now gone digital. As technology advanced, we got better delivery methods of those free signals such as cable and satellite TV. These methods brought better pictures and sound, more channels, more choices, more variety and more cost. Of course a lot of that programming such as HBO and other premium channels were never really free in the first place so I'm not counting those. But there's still a lot of that originally free content that you now must pay for but I guess that's the price we pay for that better delivery service. Fortunately there are still some exceptions out there. http://www.physorg.com/news169405329.html Technology Thu, 13 Aug 2009 22:10:03 EST news169405329 For cancer drug developers, finding an agent that kills tumor cells is only part of the equation. The drug must also spare healthy cells, and - ideally - its effects will be reversible, to cut short any potentially dangerous side effects. http://www.physorg.com/news168774413.html Chemistry Thu, 06 Aug 2009 11:00:03 EST news168774413 Ben-Gurion University of the Negev (BGU) researchers, in a collaboration with colleagues from the University of Leipzig, Germany, have identified a signaling pathway that is operational in intra-abdominal fat, the fat depot that is most strongly tied to obesity-related morbidity. http://www.physorg.com/news166795642.html Medicine & Health Tue, 14 Jul 2009 13:08:29 EST news166795642 A research team at Northwestern University has developed a tool that can precisely deliver tiny doses of drug-carrying nanomaterials to individual cells. The tool, called the nanofountain probe, functions in two different ways. In one mode, the probe acts like a fountain pen with drug-coated nanodiamonds serving as the ink, allowing researchers to create devices by `writing` with it. The second mode functions as a single-cell syringe, permitting direct injection of biomolecules or chemicals into individual cells. The research was led by Horacio Dante Espinosa, Ph.D., and Dean Ho, Ph.D., and the results appear in the journal Small. http://www.physorg.com/news165512374.html Nanotechnology Mon, 29 Jun 2009 21:10:03 EST news165512374 (PhysOrg.com) -- Researchers at Karolinska Institutet have discovered that babies born by planned Caesarean section experience changes to the DNA pool in their white blood cells, which could be connected to altered stress levels during this method of delivery. The findings, presented in the July issue of the scientific journal Acta Paediatrica, may be a part of an explanation for why babies born by Caesarean section have an increased risk of developing certain disease in later life. http://www.physorg.com/news165508836.html Medicine & Health Mon, 29 Jun 2009 19:40:01 EST news165508836 Analysis of the longest running ICSI programme in the United States has found reassuring evidence that babies born from frozen embryos fertilised via ICSI (intracytoplasmic sperm injection) do just as well as those born from frozen embryos fertilised via standard IVF treatment. http://www.physorg.com/news165493995.html Medicine & Health Mon, 29 Jun 2009 12:40:01 EST news165493995 Complications in early pregnancy or in previous pregnancies can predict the likelihood of further problems in current or subsequent pregnancies, according to research carried out by an international group of experts. http://www.physorg.com/news165475586.html Medicine & Health Mon, 29 Jun 2009 06:29:14 EST news165475586 (PhysOrg.com) -- The recent explosion in the development of nanomaterials with enhanced performance characteristics for use in commercial and medical applications has increased the likelihood of people coming into direct contact with these materials. http://www.physorg.com/news164638938.html Nanotechnology Fri, 19 Jun 2009 14:03:06 EST news164638938 User photographs can still be found on many social networking sites including Facebook after people have deleted them, British researchers said Thursday. http://www.physorg.com/news162113863.html Technology Thu, 21 May 2009 08:38:13 EST news162113863 Aerosol delivery of antibiotics via nanoparticles may provide a means to improve drug delivery and increase patient compliance, thus reducing the severity of individual illnesses, the spread of epidemics, and possibly even retarding antibiotic resistance. http://www.physorg.com/news161955592.html Nanotechnology Tue, 19 May 2009 12:40:18 EST news161955592 The Obama Administration's goal to improve the entire health care system in the USA begins with an incremental first step by introducing nearly 500,000 physicians to electronic medical records via the American Recovery and Investment Act 2009. Some physicians, hospitals and clinics throughout the world all ready use some form of health care management software which includes electronic medical record programs. http://www.physorg.com/news161935473.html Medicine & Health Tue, 19 May 2009 07:05:17 EST news161935473 A research team at Northwestern University has demonstrated a tool that can precisely deliver tiny doses of drug-carrying nanomaterials to individual cells. http://www.physorg.com/news161862130.html Nanotechnology Mon, 18 May 2009 10:42:37 EST news161862130 Pregnant women who are indigenous to the Andes Mountains deliver more blood and oxygen to their fetuses at high altitude than do women of European descent. The study helps explain why babies of Andean descent born at high altitude weigh more than European babies born at altitude. http://www.physorg.com/news161846628.html Medicine & Health Mon, 18 May 2009 06:24:20 EST news161846628 Travelers book plane tickets online, bank customers can check their accounts at any computer, and busy families can grocery shop online. Someday, even doctor visits could be among the conveniences offered via the Internet. Researchers considering the feasibility and effectiveness of virtual doctors visits report that patients and physicians found that evaluations done through videoconferencing were similar to face-to-face visits on most measures, according a study published in the May issue of the Journal of Telemedicine and Telecare. http://www.physorg.com/news161533925.html Medicine & Health Thu, 14 May 2009 15:32:58 EST news161533925