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Tue, 14 May 2013, 14:21 GMT
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Health News - Biology/Biochemistry

X-Ray Diffraction Shows How Frog Embryos Could Help Thwart Disease
An international team of scientists using a new X-ray method recorded the internal structure and cell movement inside a living frog embryo in greater detail than ever before. This result showcases a new method to advance biological research and the search for new treatments for genetic diseases... (Medical News Today)

Type 1 Diabetes May Be Reversible With Immune Suppressor Protein
A professor in Melbourne, Australia, who is on a mission to find a cure for type 1 diabetes, believes that the answer, or part of it, lies with an immune suppressor protein called CD52... (Medical News Today)

Brain Stimulation Can Boost Math Skills
Administering high-frequency electrical noise to the brain can actually boost math skills up to six months later, according to a small study at the University of Oxford... (Medical News Today)

Living Cells Must Use Their Brakes Moderately For Effective Speed Control
How cells regulate their own function by "accelerating and braking" is important basic knowledge when new intelligent medicines are being developed, or when plant cells are tweaked to produce more bioenergy. In a study published by Nature Communications, researchers at Uppsala and Umea universities show a model of how cells' regulatory systems work... (Medical News Today)

Malaria Parasites 'Talk' To Each Other
Melbourne scientists have made the surprise discovery that malaria parasites can 'talk' to each other - a social behaviour to ensure the parasite's survival and improve its chances of being transmitted to other humans. The finding could provide a niche for developing antimalarial drugs and vaccines that prevent or treat the disease by cutting these communication networks... (Medical News Today)

Nanogel To Manage Type 1 Diabetes
An extended insulin-release system comprising an injectable gel of nanoparticles may one day help patients with type 1 diabetes manage their condition without having constantly to test their blood-sugar and inject themselves with insulin... (Medical News Today)

Malaria-Carrying Mosquitoes More Strongly Attracted To Smell Of Humans
A new study shows for the first time that infection with the malaria parasite causes mosquitoes to change smell-stimulated behavior so they are more strongly attracted to the smell of humans than uninfected mosquitoes. The burden of malaria around the world is huge: the parasite infects over 200 million people a year and kills an estimated 770,000, note the researchers... (Medical News Today)

Most Complete Database To Date Of Human Phosphatases And Their Substrates
Although we know the tool's general purpose, it can sometimes be difficult to tell if a specific pair of precision tweezers belongs to a surgeon or a master jeweller. It is now easier to solve similar conundrums about a type of protein that allows cells to react to their environment, thanks to scientists at the European Molecular Biology Laboratory (EMBL)... (Medical News Today)

How Much A Single Cell Breathes
Scanning electrochemical microscopy decisively optimized How active a living cell is can be seen by its oxygen consumption. The method for determining this consumption has now been significantly improved by chemists in Bochum. The problem up to now was that the measuring electrode altered the oxygen consumption in the cell's environment much more than the cell itself... (Medical News Today)

Gut Bug May Prevent Obesity And Type 2 Diabetes
A Belgian-led study published in PNAS this week suggests Akkermansia muciniphila, an intestinal microbe that is important for maintaining the gut lining and how food is absorbed, could be used to prevent obesity and associated metabolic disorders, such as those that lead to type 2 diabetes. Our digestive tract is home to a vast and varied population of microbes... (Medical News Today)

Hearing, Vision Loss And Kidney Disease May Be Impacted By Cilia Research
Experiments at Johns Hopkins have unearthed clues about which protein signaling molecules are allowed into hollow, hair-like "antennae," called cilia, that alert cells to critical changes in their environments. Researchers found that the size limit for entry is much greater than previously thought, allowing most of a cell's proteins into cilia... (Medical News Today)

Egg Genome Is Reprogrammed To Match Sperm's With Or Without A Paternal Genome
Researchers from Huntsman Cancer Institute (HCI) at the University of Utah have discovered that while the genes provided by the father arrive at fertilization pre-programmed to the state needed by the embryo, the genes provided by the mother are in a different state and must be reprogrammed to match. The findings have important implications for both developmental biology and cancer biology... (Medical News Today)

A Highly Selective Refuse Collection
At the University of Geneva (UNIGE), the team led by Professor Jean Gruenberg has long been interested in the movement of lysosomes, the sub-compartments of cells to where endocytic vesicles deliver their waste content and the molecules destined to be destroyed... (Medical News Today)

Slowing Down The Aging Process By Boosting "Cellular Garbage Disposal"
Scientists say that a gene, called parkin, can delay the onset of aging and make fruit flies live longer. They believe their findings might have important implications for the aging process and development of disease in human beings. The study was published in the peer-reviewed journal Proceedings of the National Academy of Sciences (PNAS)... (Medical News Today)

Protein Rejuvenates Hearts In Mice
Researchers in the US have identified a protein that rejuvenates old hearts in mice. The mouse hearts had thickened walls, a sign of aging similar to that seen in humans, but after treatment their hearts reduced in size and thickness, and became more like the hearts of younger mice... (Medical News Today)

Engineered Spider Protein Promises Easier Anti-Venom Vaccines With Fewer Side Effects
Researchers in Brazil have engineered a new protein from the toxin of a reaper spider that could herald a new generation of anti-venom vaccines... (Medical News Today)

New Technique Developed To Track Cell Interactions In Living Bodies
Researchers at Stanford University School of Medicine have developed a new technique to see how different types of cells interact in a living mouse. The process uses light-emitting proteins that glow when two types of cells come close together... (Medical News Today)

Key Process Discovered In Sexual Reproduction
The Research Group headed by molecular biologist Andrea Pichler from the Max Planck Institute of Immunobiology and Epigenetics in Freiburg has made an important discovery in meiosis research. Pichler and her group have identified a new mechanism that plays an important role in meiosis. Meiosis, also called reductional division, is a key process in sexual reproduction... (Medical News Today)

How Form Of Complex Organs Evolves By Natural Selection: 3D Simulation
Researchers at the Institute of Biotechnology at the Helsinki University and the Universitat Autonoma de Barcelona (UAB) have developed the first three-dimensional simulation of the evolution of morphology by integrating the mechanisms of genetic regulation that take place during embryo development... (Medical News Today)

The Up And Down Side Of 'Traffic' In Our Cells
A mechanism that permits essential substances to enter our cells while at the same time removing from them harmful components also has a "down side." This negative aspect prevents vital drugs, such as anti-cancer drugs, from achieving their designed functions, while also enabling bacterial cells to develop resistance to penetration of antibiotics... (Medical News Today)

Microchip Proves Tightness Provokes Precocious Sperm Release
Sperm cell release can be triggered by tightening the grip around the delivery organ, according to a team of nano and microsystems engineers and plant biologists at the University of Montreal and Concordia University... (Medical News Today)

Scientists Decode "Molecular Chatter" That Makes Cancer Cells Spread
For the first time, scientists in the US have decoded the "molecular chatter" that makes cancer cells more aggressive and more likely to travel and set up tumors in other parts of the body (metastasize). The discovery came about as a result of bringing together specialists in cancer development with specialists in wound healing... (Medical News Today)

Research May Lead To Self-Healing Or Biocompatible Materials That Mimic Human Tissues
Squeeze a piece of silicone and it quickly returns to its original shape, as squishy as ever. But scientists at Rice University have discovered that the liquid crystal phase of silicone becomes 90 percent stiffer when silicone is gently and repeatedly compressed. Their research could lead to new strategies for self-healing materials or biocompatible materials that mimic human tissues... (Medical News Today)

Dark Field Imaging Of Rattle-Type Silica Nanorattles Coated Gold Nanoparticles In Vitro And In Vivo
In recent years, metal nanoparticles have showed great application prospect in the field of biological imaging, cancer diagnosis and treatment due to its unique optical scattering and optical absorption properties. In many metal materials, gold nanoparticles have caused concerns in the field because of its simple preparation, easy to modify advantages... (Medical News Today)

Cancer Cells Are Nimbler Than Non-Malignant Cells
Clues about how cells become cancerous are revealed in a new catalogue of their physical and chemical features... (Medical News Today)

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