http://www.medicineadvices.com/medical-news/ Tue, 16 Mar 2010 21:30:36 WebStudio CMS (http://www.ws.lt/) http://www.medicineadvices.com/medical-news/technology-science/bright-quantum-dots-help-basic-cancer-biology-studies/ By taking advantage of the unique optical and other physical properties of nanoscale materials, researchers have created a veritable toolbox of nanoparticle probes that can track the fate of cells and even individual molecules in complex environments, opening the door to a wide range... MedicineAdvices.com Wed, 26 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/new-type-of-nanoparticle-created-by-spray-pyrolysis/ The particles, about 100 to 200 nanometers in size, are luminescent, magnetic, and inexpensive to make, and can be tagged with antibodies designed to detect cancer-associated proteins.The new nanoparticles, described in a paper published in the journal Nanotechnology, are made using... MedicineAdvices.com Tue, 25 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/human-proteins-evolving-slowly-thanks-to-multi-tasking-genes/ By tweaking these dual role regions, scientists could develop gene therapy techniques that produce proteins that are even better than those found in nature, and could one day be used to help people recover from genetic disorders.The stretch of DNA which codes for a specific protein... MedicineAdvices.com Tue, 25 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/horse-genome-sequence-assembled/ The $15 million effort to sequence the approximately 2.7 billion DNA base pairs in the genome of the horse (Equus caballus) was funded by the National Human Genome Research Institute (NHGRI), one of the National Institutes of Health (NIH). A team led by Kerstin Lindblad-Toh, Ph.D.,... MedicineAdvices.com Mon, 24 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/loss-of-a-universal-trna-feature/ tRNAHis is the specific tRNA that assists in incorporating the amino acid histidine into new proteins. Histidine residues make essential contributions to protein structure as well as the catalytic mechanisms of enzymes and must be reliably incorporated during the process of translation.Until... MedicineAdvices.com Mon, 24 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/natural-molecules-to-create-pseudo-cell-factories/ LeDuc, an assistant professor of mechanical and biomedical engineering, penned an article for the January edition of Nature Nanotechnology Journal about the efficacy of using man-made cells to treat diseases without injecting drugs. This idea was developed by a team of researchers... MedicineAdvices.com Sun, 23 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/scientists-discover-master-switches-for-adult-blood-stem-cells/ Unlocking the switches' code may one day enable scientists to grow new blood cells for transplant into patients with cancer and other bone marrow disorders.The scientists located the control switches not at the gene level, but farther down the protein production line in more recently... MedicineAdvices.com Sun, 23 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/scientists-find-connection-between-nerve-cells-and-immune-system/ What they found: numerous immune cells imbedded in the tissue around the intestine are joined to nerve strands and cells. "We already have many indications that immune defenses are at least partially influenced by the nervous system," explains Helmholtz scientist Dr. Kurt Dittmar.... MedicineAdvices.com Sat, 22 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/scientists-discover-enzym-that-activates-epigenetically-silenced-genes/ This silencing also affects the function of many tumor suppressor genes, which, in their unmethylated state, put the brakes on uncontrolled cell growth. In contrast to 'real' mutations, where DNA building blocks are exchanged or lost, these epigenetic changes are reversible. Therefore,... MedicineAdvices.com Sat, 22 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/nanotechnology-and-the-public-effectively-communicating-nanoscale-science-and-engineering-concepts/ The surprising answer - about 930 acres, or slightly larger than New York's Central Park - certainly makes fun trivia fodder. More importantly, however, it points nanotechnology researchers to strategies that help them more effectively communicate the scale, scope, and "wow" of their... MedicineAdvices.com Fri, 21 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/researchers-replace-organ-in-mice-using-single-parent-stem-cells/ Their findings demonstrate that single-parent stem cells can proliferate normally in an adult organ and could provide a less controversial alternative to the therapeutic cloning of embryonic stem cells. "Creating uniparental embryonic stem cells is actually much more efficient than... MedicineAdvices.com Fri, 21 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/scientists-discover-vulnerable-area-on-hiv-that-could-lead-to-development-of-hiv-aids-vaccine/ A team of researchers at NIH's National Institute of Allergy and Infectious Diseases, led by Peter Kwong, identified a protein called gp 120 on the surface of the virus that appears susceptible to attack by an antibody called b12. HIV enters CD4+ T cells through gp 120, but b12 could... MedicineAdvices.com Fri, 21 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/scientists-label-cells-with-magnetic-nanoparticles/ More sensitive methods for tracking cells in vivo could lead to a better understanding of how cancer spreads throughout the body or how the immune system reacts to tumors. Fabian Kiessling, Ph.D., led this study, whose initial stages involved preparing iron oxide nanoparticles and... MedicineAdvices.com Thu, 20 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/nano-printing-technique-produces-model-membranes/ This method, published in the journal Small, could open the door to a better understanding of how the cell membrane functions and could lead to new ways of getting therapeutic drugs into cells.Cell membranes are incredibly complex structures comprising a mixture of fatty molecules... MedicineAdvices.com Thu, 20 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/all-types-of-carbon-nanotubes-penetrate-wide-variety-of-cell-membranes/ Now, an attempt to better understand this process has found that virtually any type of carbon nanotube can enter a wide variety of cell types. Moreover, it appears carbon nanotubes enter cells using more than one mechanism.Reporting its work in the journal Nature Nanotechnology, a... MedicineAdvices.com Wed, 19 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/cell-based-bone-tissue-engineering/ Until recently, say the authors, the use of bone grafts from a different part of the patient's own body has been the number one choice for attempting to restore function. But there are major problems with such grafts-for example, removing bone from a different part of the body can... MedicineAdvices.com Wed, 19 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/nanoparticles-advance-photodynamic-therapy-to-kill-tumor-cells/ Unfortunately, PDT is associated with significant side effects that largely result from the fact that light-sensitive chemicals, or photosensitizers, distribute themselves throughout the body and thus can damage healthy as well as malignant cells. Another limitation arises because... MedicineAdvices.com Tue, 18 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/nanoparticles-rely-on-velcro-effect-to-target-tumor-cells/ Now, work from one of the National Cancer Institute's Cancer Nanotechnology Platform Partnerships shows that a velcro-like process does indeed improve cell-specific targeting of nanoparticles to tumor cells. Velcro owes its incredible sticking power to the power of large numbers of... MedicineAdvices.com Tue, 18 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/sirna-delivery-into-human-t-cells-and-primary-cells-with-carbon-nanotube-transporters/ A stumbling block has been the efficient and targeted delivery of RNA into the cells. Researchers led by Hongjie Dai at Stanford University have chosen to use carbon nanotubes as their "means of transport". This has allowed them to successfully introduce RNA fragments that "switch... MedicineAdvices.com Mon, 17 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/entire-genetic-blueprints-of-more-than-2-000-human-and-avian-influenza-viruses-completed-and-made-public/ The entire genetic blueprints of more than 2,000 human and avian influenza viruses taken from samples around the world have been completed and the sequence data made available in a public database."This information will help scientists understand how influenza viruses evolve and spread,"... MedicineAdvices.com Mon, 17 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/quantum-rods-and-dots-image-cancer-cells/ Hideo Higuchi, Ph.D., and colleagues at Tohoku University in Japan, used antibody-labeled quantum dots and a high-sensitivity fluorescence microscope fitted with a video camera to make 30-frame-per-second movies of these nanoparticles as they traveled through the bloodstream to tumors... MedicineAdvices.com Sun, 16 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/quantum-dots-detect-metastatic-lesions/ Reporting its work in the journal Bioconjugate Chemistry, a research team headed by Byron Ballou, Ph.D., used polymer-coated, water-soluble quantum dots to map the lymph nodes that drain tumors in mouse models of human cancer. In many types of cancer, metastatic lesions first appear... MedicineAdvices.com Sun, 16 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/sirna-delivery-into-human-t-cells-and-primary-cells-with-carbon-nanotube-transporters/ One possible solution, identified by investigators at Stanford University's Center for Cancer Nanotechnology Excellence Focused on Therapy Response, is to use carbon nanotubes to transport siRNA agents through the bloodstream and into cells. Carbon nanotubes are adept at passing through... MedicineAdvices.com Sun, 16 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/perfluorocarbon-nanoparticles-track-living-cells/ To better track the fate of stem cells injected into patients, researchers at the Siteman Center of Cancer Nanotechnology Excellence (CCNE) have turned to a combination of fluorine-based magnetic resonance imaging (MRI) and nanoparticles made of liquid perfluorocarbons. Reporting its... MedicineAdvices.com Sat, 15 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/dna-cages-to-deliver-drugs/ By using small molecules as keys, the cage can be opened or part of the DNA can be freed. Scientists of the MESA+ Institute for Nanotechnology of the University of Twente in The Netherlands report about this in Angewandte Chemie International Edition, in their cover article on February... MedicineAdvices.com Sat, 15 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/nasa-undersea-mission-to-test-space-medicine-concepts/ Veteran space flyer Heidemarie Stefanyshyn-Piper will lead the 12-day undersea mission aboard the National Oceanic and Atmospheric Administration (NOAA) Aquarius Underwater Laboratory. NASA Flight Surgeon Josef Schmid, NASA Astronaut Jose Hernandez and Dr. Tim Broderick of the University... MedicineAdvices.com Fri, 14 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/dissecting-secret-formula-of-nectar/ Scientists Danny Kessler and Ian Baldwin from the Max Planck Institute for Chemical Ecology in Jena, Germany, recently addressed the question, why would plants risk poisoning the insects and birds that provide pollination services? Their findings have been published in The Plant Journal.Kessler... MedicineAdvices.com Fri, 14 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/scientists-alter-electrical-properties-of-cells-inducing-regeneration/ This discovery may provide clues about how bioelectricity can be used to help humans regenerate. This study, for the first time, gave scientists a direct glimpse of the source of natural electric fields that are crucial for regeneration, as well as revealing how these are produced.... MedicineAdvices.com Thu, 13 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/new-terms-for-describing-gene-products-involved-in-microbial-host-interactions/ The expansion provides terms that scientists can use to describe the complex events that occur when a pathogenic or beneficial microbe encounters its host. Understanding these events is crucial for developing new interventions for preventing infections by disease-causing microbes while... MedicineAdvices.com Thu, 13 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/british-government-to-ask-public-what-they-think-of-stem-cell-science/ The Biotechnology and Biological Sciences Research Council (BBSRC) and the Medical Research Council (MRC) will run the public dialogue programme to gain an insight into public attitudes towards stem cell research. In this fast moving and important area of science it is essential to... MedicineAdvices.com Wed, 12 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/improvement-of-cancer-targeting-therapy-using-nanocarriers-for-intractable-solid-tumors-by-inhibition-of-tgf-beta-signaling/ Reporting its work in the Proceedings of the National Academy of Science, a team of investigators led by Kohei Miyazono, M.D., and Kazunori Kataoka, Ph.D., both at the University of Tokyo, described their experiments using an inhibitor of transforming growth factor beta (TGF-beta)... MedicineAdvices.com Wed, 12 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/targeted-nanoparticles-image-early-tumors/ This work appears in the International Journal of Cancer. Gregory Lanza, M.D., and Samuel Wickline, M.D., both at Washington University in St. Louis, led the group of investigators that created perfluorocarbon nanoparticles, each containing an average of 10 atoms of the radioactive... MedicineAdvices.com Tue, 11 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/magnetic-nanocrystals-used-to-carry-tumor-killing-drugs/ That possiblity may become a reality as a result of work showing that magnetic nanocrystalline iron-nickel alloys can effectively carry and release anticancer agents. The results of these experiments appear in the journal Acta Biomaterialia. Devesh Misra, Ph.D., and colleagues at the... MedicineAdvices.com Tue, 11 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/ultrafine-hydrogel-nanoparticles-synthetic-approach-and-therapeutic-application-in-living-cells/ Preliminary experiments, published in the journal Angewandte Chemie International Edition, show that cancer cells die quickly when treated with these nanoparticles and exposed to light. Raoul Kopelman, Ph.D., and colleagues from the University of Michigan developed a versatile chemical... MedicineAdvices.com Tue, 11 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/drug-delivery-system-that-consists-of-nanocrystals-of-a-hydrophobic-drug/ Now scientists in the University at Buffalo's Institute for Lasers, Photonics and Biophotonics and Roswell Park Cancer Institute have developed an innovative solution in which the delivery system is the drug itself. They describe for the first time in Molecular Pharmaceutics a drug... MedicineAdvices.com Mon, 10 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/when-it-comes-to-antioxidants-orange-could-be-the-new-red/ A team at Ohio State University grew special orange tomatoes which contain a type of lycopene that is apparently more readily used by the body than the type found in red tomatoes.Lycopene belongs to a family of antioxidants called the carotenoids, which give certain fruits and vegetables... MedicineAdvices.com Mon, 10 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/scientists-test-secret-weapon-against-tumours/ A team of scientists from the Beatson Institute for Cancer Research gave mice a chemical that caused cancer cells to commit suicide, significantly slowing the growth of the tumours they were carrying. The chemical kick started a gene called p73 that brings about cancer cell death.This... MedicineAdvices.com Sun, 09 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/nanotechnology-reveals-hidden-fingerprints/ The news is reported in the latest edition of the Royal Society of Chemistry journal Chemical Communications.The current method for revealing prints involves coating surfaces with a watery suspension of gold nanoparticles and citrate ions. Under acid conditions, the gold particles... MedicineAdvices.com Sun, 09 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/tiny-injected-gel-particles-to-help-chronic-lower-back-pain/ Dr Brian Saunders from The School of Materials and Professor Tony Freemont from The Faculty of Medical and Human Sciences have developed tiny gel particles that swell and stiffen when injected into a damaged area. Investigations have revealed that degenerated animal intervertebral... MedicineAdvices.com Sat, 08 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/xenotransplantation-what-are-the-barriers/ The major stumbling block, says Dr Muhammad Mohiuddin (US National Heart, Lung, and Blood Institute) in a paper in PLoS Medicine, is that the immune system in the animal receiving the organ tends to reject the transplant. Nevertheless, the recent development of genetically modified... MedicineAdvices.com Sat, 08 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/bacteria-biosensor-prototype/ At the 233rd American Chemical Society national meeting in Chicago March 25-29, researchers from Virginia Tech and the Edward Via Virginia College of Osteopathic Medicine (VCOM) will report their work on a bacteria biosensor prototype and correlations to brain tissue damage. Many environmental... MedicineAdvices.com Fri, 07 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/polymers-show-promise-for-gene-delivery/ Representing Virginia Tech faculty members and students from engineering, chemistry, and veterinary medicine, Chemistry Professor Tim Long will give an invited lecture at the 233rd National Meeting of the American Chemical Society in Chicago March 25-29. The presentation will be an... MedicineAdvices.com Fri, 07 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/scientists-invent-way-to-reversibly-silence-brain-cells-using-pulses-of-yellow-light/ Such diseases often must be treated by removing neurons that fire incorrectly. The new MIT research could lead to the development of optical brain prosthetics to control neurons, eliminating the need for irreversible surgery. "In the future, controlling the activity patterns of neurons... MedicineAdvices.com Thu, 06 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/unusual-protein-helps-cell-bypass-damage-when-making-new-dna/ But they also discovered that this protein, an enzyme called Dpo4, often makes errors when copying the genomic DNA sequence that later might cause the cell to become cancerous. The findings by researchers with Ohio State University 's Comprehensive Cancer Center are described in two... MedicineAdvices.com Thu, 06 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/new-type-of-chemistry-promises-less-expensive-drugs/ The new approach allows scientists to synthesize molecules without employing toxic catalysts, and it also does not generate alternate versions of drug molecules that can damage the body, two perennial issues that plague the manufacturing process. David MacMillan, one of the researchers... MedicineAdvices.com Thu, 06 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/halting-neurogenesis-improves-working-memory-in-mice/ They may have too much memory making it harder to filter out information and increasing the time it takes for new short-term memories to be processed and stored. Published in the Proceedings of the National Academy of Sciences (March 13, 2007 issue), the research reinforces the old... MedicineAdvices.com Wed, 05 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/penn-state-scientists-reveal-structure-of-gateways-to-gene-control/ "For the first time, we are seeing in very high resolution on a genome-wide scale how nucleosomes control the expression of an organism's genes," said B. Franklin Pugh, professor of biochemistry and molecular biology and the study's lead investigator. The map pinpoints the locations... MedicineAdvices.com Wed, 05 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/new-insight-on-tree-frog-adhesion/ Conversely when walking or jumping they can detach their toe pads easily. Researchers from the University of Glasgow will present insights into how this fascinating ability is controlled at the Society for Experimental Biology's Annual Meeting in Glasgow, UK. "The toe pads of tree... MedicineAdvices.com Tue, 04 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/what-forced-early-hominins-onto-two-legs/ How we have evolved to walk on two legs remains a fundamental but, as yet, unresolved question for scientists. A popular explanation is that it is our ability to carry objects, particularly children, which forced early hominins onto two legs. Dr Johanna Watson (University of Manchester)... MedicineAdvices.com Tue, 04 Mar 2008 22:00:00 http://www.medicineadvices.com/medical-news/technology-science/one-species-of-insect-shown-to-deliberately-cultivate-bacteria-in-its-antennae/ For the first time scientists have shown that one species of insect deliberately cultivates bacteria in its antennae in order to protect their larvae from fungal attack. This highly specialised interaction between an insect species and bacteria protects the insect's offspring against... MedicineAdvices.com Mon, 03 Mar 2008 22:00:00