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Cavity in Biological News

Scripps scientists find structure of a protein that makes cancer cells resistant to chemotherapy

... of an upside down "v" or a tipi with a large cavity inside. The cavity's interior is lined with amino ... tipi so any substance caught inside the protein's cavity is ejected from the cell. While the new study ... inside P-gp. "They both go in the same cavity and bind to different amino acids, but with some ...

Checking people at airports -- with terahertz radiation

... range from 50 m to 600 m with the aid of cavity radiators. In order to make available ... to Planck's radiation law, the PTB uses two THz cavity radiators at different temperatures in connection ... to 1700 m. Due to the calculable radiation of the cavity radiators and the known transmittance of the ...

Nitrates in vegetables protect against gastric ulcers

... into nitrites by the bacteria in the oral cavity and subsequent transformation into biologically ... of nitrates, which the bacteria of the oral cavity partially convert into nitrites. When we swallow ... thesis also shows that the bacteria in the oral cavity are very important to the process of nitrates in ...

Irritating smells alert special cells, NIH-funded study finds

... uncovered an unexpected role for specific nasal cavity cells. Researchers funded by the National ... chemosensory cells on the surface of the nasal cavity are in close contact with trigeminal nerve fibers ... substances applied to the surface of the nasal cavity trigger a trigeminal nerve response. ...

Using nanotechnology, UCLA researchers discover cancer cells 'feel' much softer than normal cells

... detecting cancer, especially in cells from body cavity fluids where diagnosis using current methods is ... is that cancer cells and normal cells in body cavity fluids look very similar under an optical ... features. However, the normal cells from body cavity fluids can look almost identical to cancer cells ...

Music is the engine of new U-M lab-on-a-chip device

... those notes and the sound waves push air through a hole in the resonance cavity to their assigned channel. The air then nudges the droplets in the microfluidic device along. "Each resonance cavity on the device is designed to amplify a specific tone and turn it into a ...

MIT: Novel needle could cut medical complications

... and wire proceed through the firm tissue. But once they reach the target cavity (for example, a blood vessel) there is no more resistance on the wire, and ... Because the needle is no longer moving, it cannot proceed past the cavity into the wrong tissue. Karp believes that the device could reach ...

A pocketful of uranium

... team thus chose to develop a protein that offers the uranyl ion a binding cavity in which it is surrounded by the protein's side-groups in the manner it ... NikR does not bind to the DNA. The nickel ion is located in a binding cavity in which it is surrounded by a square-planar arrangement of binding ....

February 2009 Geology and GSA Today media highlights

... thick tails (diapir plumes). The conditions required for diapir versus cavity plume generation are different, and in a chemically homogeneous mantle ... active portion of the lower mantle thermal boundary layer and, hence, for cavity plume formation. A chemical layer that can move in response to changing ...

Advancement in tissue engineering promotes oral wound healing

... correct oral characteristics. "Reconstructive surgery within the oral cavity is required during tumor excision, cleft palate repair, trauma, repair of ... Dr. Gibbs. "Drawbacks of using skin as an autograft material in the oral cavity include bulkiness, sweating and hair formation and the limited amount of ...

Scientists identify cell changes leading to impaired 'artificial kidney' function

... Fluid is inserted into the abdominal cavity, and the blood vessel-rich cavity lining, the peritoneum, acts as a filter for the blood. Exchanges of ... back to their original state, as they normally existed in the abdominal cavity lining. These findings support further research on maintaining the ...

Anti-tumor therapy with endoscopic ultrasound may fight cancer more safely and effectively

... (NOTES®). This entails using the stomach as a window to the abdominal cavity rather than the skin. EUS could play an important role in helping surgeons gain safe access to the abdominal cavity as part of NOTES. EUS 2008 will be devoted to teaching current ...

Researchers reveal insights into hidden world of protein folding

... proteins, the folding takes place out of sight, hidden in the inner cavity of a type of molecule called a chaperonin. Now Stanford researchers ... but now we can start to understand how the protein is pushed inside the cavity of the chaperonin and what this folding chamber looks like," Frydman said. ...

Bees disease -- 1 step closer to finding a cure

... through the growth of a bacterium called Paenibacillus larvae in the organ cavity of honey bee larvae. The accepted view was that the bacteria germinate ... It isnt until then that the bacteria burst out of the gut into the organ cavity thereby killing the larvae. These findings are a major breakthrough in ...

How alligators rock and roll

... plays a role in breathing like the diaphragm that separates the chest cavity from the abdominal cavity in humans and other mammals. But in gators, it runs parallel to the belly ...

In-vitro fertilization improved with 3-D/4-D-guided embryo transfer and new placement target

... Point - Suggested Target for Optimal Embryo Placement Within the Uterine cavity During Embryo Transfer" (ASRM: P-665), was led by Dr. Gergely, who serves ... Gergely. "While 3D imaging allows doctors to visualize the entire uterine cavity and identify the MIP Point, it's only with the addition of 4D imaging that ...

Mice use specialized neurons to detect carbon dioxide in the air

... odorant receptor molecules and reside within the lining of the nasal cavity that detect odors. But a small subset express an enzyme called guanylyl ... to carbon dioxide. Conversely, all the cells in the lining of the nasal cavity that were activated by carbon dioxide are the GC-expressing neurons. ...

Protecting cells from their neighbors

... In the 1960s, Drosophila was the model in which researchers described a phenotype named pole hole. Embryos, that did not survive, showed a cavity in one of the poles of the egg in which cells were lacking. "It was thought that this was a problem related to the germ line but the cause was ...

Wings that waggle could cut aircraft emissions by 20 percent

... the air, making it flow sideways back and forth over the wing. The jets work by the Helmholtz resonance principle - when air is forced into a cavity the pressure increases, which forces air out and sucks it back in again, causing an oscillation the same phenomenon that happen when blowing over a ...

New diagnostic advance seen for head, throat cancer

... the sixth most common cancers in the world, the researchers said in their study, and a significant cause of mortality. In 2008, cancers of the oral cavity and pharynx alone accounted for 35,310 new cases in the United States and 7,590 deaths. They have been linked to such things as tobacco use and ...

Sugar on bacteria surface serves as base for a web of resistance

... over again'," said Wozniak, also an investigator in CMIB. As part of this process, some bacterial cells in the biofilm kill themselves to create a cavity from which seed cells can be released to begin the formation of a new mass. This kind of programmed cell death, called apoptosis, is typical of ...

Penn researchers demonstrate a new model for drug discovery with a fluorescent anesthetic

... to discover and test new anesthetics and to learn more about how they work. The authors identified 1-AMA in a screen for compounds that bind to a cavity in horse spleen apoferritin, HSAF, that Eckenhoff and co-workers have shown to bind clinical anesthetics. Researchers noticed a resemblance in the ...

UK robot sub searches for signs of melting 60 km into an Antarctic ice shelf cavity

... temperature, and oxygen concentrations in the sea water within the ice cavity, which are vital to understanding the flow of water within the ice cavity and the rate of melting. Autosub is 7m long and weighs 3.5 tonnes. Travelling at 6km hour it is capable of diving up to 1600 m deep, and can operate ...

Stem cells replace stroke-damaged tissue in rats

... PLGA particles can be injected through a very fine needle and then adopt the precise shape of the cavity. In this process the cells fill the cavity and can make connections with other cells, which helps to establish the tissue. "Over a few days we can see cells migrating along the scaffold ...

'Fattysaurus' or 'thinnysaurus'? How dinosaurs measure up with laser imaging

... 3D model in which each bone retains its spatial position and articulation. This provides a high resolution skeletal framework around which the body cavity and internal organs such as stomach, lungs and air sacs can be reconstructed. This has allowed calculation of body segment masses, centres of mass ...

Internationally acclaimed researcher joins UH faculty thanks to $5.5 million grant

... of Medicine and recent recipient of the National Medal of Science. Here's how nuclear receptors work: Each receptor in the cell's nucleus has a cavity shaped just so that a hormone molecule can fit inside. Once wedded to the hormone, the nuclear receptor's outer surface changes, depending upon the ...

From seed to nuts: human ancestor's face evolved to eat survival foods

... on either small, hard objects or large volumes of food. The unique facial features included columns of bone positioned along either side of the nasal cavity that acted as struts to reinforce the face. Using finite element analysis an engineering technique used to examine how structures of complex ...

Heavy pyridine crystallizes differently

... Such interactions between groups of atoms also play an important role in pharmaceuticals, such as when a drug is meant to fit into the binding cavity of an enzyme. Subtle changes can result in significant changes in a drug's activity. This is why Boese and his team are interested in deuterated ...

Brain structure provides key to unraveling function of bizarre dinosaur crests

... the growth pattern of the crest and its high degree of variability in different co-existing species, it supports the idea that the elaborate nasal cavity was likely used to produce sounds for communication. This study demonstrates the power of using an integrated approach combining 3D imaging, growth ...

New meat-eating dinosaur from Argentina had bird-like breathing system

... the evidence of air sacs within Aerosteon's body cavity. Previously, paleontologists had found only tantalizing evidence in the backbone, outside the cavity with the lungs. "This dinosaur, unlike any other, provides more direct evidence of the bellows involved in bird breathing," Martinez said. Its bones ...

Meat-eating dinosaur from Argentina had bird-like breathing system

... the evidence of air sacs within Aerosteon's body cavity. Previously, paleontologists had found only tantalizing evidence in the backbone, outside the cavity with the lungs. Wilson worked with Sereno and the rest of the team to scientifically describe and interpret the find. The vertebrae, clavicles, ...

Life in a bubble

... could replicate the external lung on a larger scale, for possible use by diving humans. A team at Nottingham Trent University showed that a porous cavity surrounded by water-repellent material is supplied with oxygen by the thin air layer on its surface. The surface area required to support human ...

NYU Langone Medical Center's tip sheet to the International Conference on Alzheimer's Disease 2008

... protein, which causes a group of brain diseases, including mad cow's disease. By injecting a safe, reconfigured form of the protein into the body cavity of mice, in addition to orally delivering a neutral bacterial booster, animals could produce more antibodies against the prion protein in the mouth ...

Comparing apples and pears

... calculate oxygen concentration in individual cells of fruit tissues. "It is still unclear how airways in the fruit develop, and why apples have cavity structures and pears micro-channel networks", explains Pieter Verboven, from the Catholic University of Leuven and corresponding author of the paper. ...

Saltwater sleuths: Seeking clues to help determine the ages of fish and shellfish populations

... and process scales. Some species, however, require special attention: baked vertebrae are used to age monkfish, and thin sections of chondrophores, a cavity at the hinge of bivalve mollusks, are used to age surfclams. The majority of requests for age data come from stock assessment teams, and others ...

CAPHOSOL relieves oral mucositis and improves quality-of-life in cancer patients

... Marilyn L. Haas, PhD, RN, CNS, ANP-C, Nurse Practitioner, Mountain Radiation Oncology, Asheville, N.C. As layers of epithelial cells in the oral cavity (cells lining the surface of the throat and esophagus) are eroded during therapy, patients often experience severe pain, are more prone to infection ...

Tooth loss strongly linked to risk of esophageal, head and neck, and lung cancer

... is also a factor in cancer development. Whatever the mechanism, the researchers stress that oral care is critical to good health. The oral cavity is a gateway between the external environment and the gastrointestinal tract and acts in both food ingestion and digestion, the researchers wrote. ...

Introducing 'Orange Bulldog'

... viruses and often die before they produce fruit. The research team set out to develop a virus-resistant pumpkin with bright orange color and an open cavity that would be suitable for Halloween carving. According to Boyhan, Orange Bulldog seeds consistently produced fruit during fall production, whereas ...

Can micro-scaffolding help stem cells rebuild the brain after stroke?

... work their way to connect with surrounding healthy tissue. Dr Modo explains: "We propose that using scaffold particles could support NSCs in the cavity to re-form the lost tissue and provide a more complete functional repair. The ultimate aim is to establish if this approach can provide a more ...

Scientists ask whether microscaffolding can help stem cells rebuild brain after stroke damage

... work their way to connect with surrounding healthy tissue. Dr Modo explains: We propose that using scaffold particles could support NSCs in the cavity to re-form the lost tissue and provide a more complete functional repair. The ultimate aim is to establish if this approach can provide a more ...
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(Date:9/16/2014)... Menopause Society (NAMS) has published its key, evidence-based ... everything from hot flashes to heart disease. The ... for Clinical Care of Midlife Women," was published ... . This is the first, comprehensive set of ... freely available to all clinicians who care for ...
(Date:9/16/2014)... Two Johns Hopkins neuroscientists have discovered the "molecular brakes" ... inner ear cochleas of mice. These "hair cells" translate ... the brain and are interpreted as sounds. If the ... , A summary of the research will be ... Sept. 16. , "The proteins Hey1 and Hey2 act ...
(Date:9/16/2014)... inherit certain traits from our parents that are pre-determined. ... play out by taking certain drugs or better yet, ... team of researchers at the Boston University School of ... research. , Epigenetics regulates gene expression in a ... which prevent permanent mutations or alterations within the gene ...
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(Date:9/17/2014)... (HealthDay News) -- Present-day Europeans are the descendants ... according to a new study. Previous ... and early European farmers. But, a new genetic ... also the descendants of Ancient North Eurasians. Nearly ... third ancestral group, researchers from Harvard Medical School ...
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