absorption

Discovery of key protein's shape could lead to improved bacterial pneumonia vaccine

... in solutions, while CDmeasures differences in the absorption of different types of polarizedlight by molecules to determine their shape. It also can show how thatshape can change when the protein interacts with another molecule.“This work required that we develop new NMR methods in order todetermine the shape ...

New comparative toxicogenomics database

... in solutions, while CDmeasures differences in the absorption of different types of polarizedlight by molecules to determine their shape. It also can show how thatshape can change when the protein interacts with another molecule.“This work required that we develop new NMR methods in order todetermine the shape ...

Surprising findings reported about iron overload

...eposition occurs due to inadequate control of iron absorption by the small intestine. The first major report of findings in the five-year, 100,000-person study will be published tomorrow, April 28, in The New England Journal of Medicine (NEJM). The University of Alabama at Birmingham received $3.1 million of s...

Reducing malarial transmission in Africa

...gimen, and as it also needs oily food for adequate absorption there might be inadequate drug levels in the blood of many treated individuals. The authors conclude that although co-artemether as a first-line treatment is not likely to reduce overall transmission of Plasmodium falciparum within the community it m...

Iron exporter revealed that may explain common human disorder

... iron exporter that functions in key sites of iron absorption and release in the body. The findings suggest that the iron accumulation seen in those with hemochromatosis may stem from a loss of control over iron export through ferroportin, the researchers said. "Iron is essential in the body and abundant in th...

Alzheimer's cognitive decline slowed

...bjects showed significant increases in the brain's absorption of a radioisotope called 18-fluorodeoxyglucose, an indicator of increased metabolic activity in the brain. The researchers noted that the increase was observed in most cortical regions that receive cholinergic input from forebrain nerve cells called ...

Disease diagnosis, biodefense among UH chemical research projects

...od pressure, treating cancer and increasing oxygen absorption in lung tissue. Czernuszewicz's research is focused on the roles of salivary nitrophorins in storing and releasing NO and binding histamine by using resonance Raman spectroscopic techniques as a probe of molecular structure. # Yuriy Fofanov, assista...

Findings have implications for tracking disease, drugs at the molecular level

...visible light using a technique called multiphoton absorption induced luminescence (MAIL). The most efficient gold nanoparticles could be observed at laser intensities lower than those commonly used for multiphoton imaging, in which specific tissues or cells -- cancer cells, for example -- are fluorescently-la...

Thai spice helps cut blood sugar swings

...tled "Hydroxycitric acid delays intestinal glucose absorption in rats," appears online and in the June issue of ...G, into the stomach, at P Wielinga said that the absorption delay was significant because "sugar that is normally absorbed rather quickly -- within about 20 min...

Insulin pulses keep the liver lean

...he pancreas produces insulin, which stimulates the absorption of sugar and fat by the liver," Najjar said. "But in today's Western society, large portions and frequent munching may lead insulin levels to remain high all the time. In that case, the liver no longer perceives pulses of the hormone and becomes resi...

UCLA researchers identify key enzyme linked to childhood blindness

...elated to vitamin A, which is converted upon light absorption to all trans retinaldehyde in a process called photo bleaching. This conversion is the first step in visual perception. Photo bleaching leaves the rhodopsin insensitive to light until the all trans retinaldehyde is converted, or "isomerized," back i...

Chernobyl: The true scale of the accident

...d vegetation in forest and mountain areas had high absorption of radiocaesium, with persistent high levels in mu...ined quickly through dilution, physical decay, and absorption of radionuclides in bed sediments and catchment soils. Because of bioaccumulation in the aquatic foo...

Anti-cancer Compound In Beer Gaining Interest

...Most beer has low levels of this compound, and its absorption in the body is also limited. But if ways can be developed to significantly increase the levels of xanthohumol or use it as a nutritional supplement - that might be different. It clearly has some interesting cancer chemopreventive properties, and the ...

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

...reflectivity of the surface, as well as having the absorption or emission of stratospheric and upper atmospheric species situated between the troposphere and the instrument. "First with GOME and now much better with SCIAMACHY we are demonstrating it can be done. The success so far is an important step on the ...

New evidence questions the simple link between prion proteins and madcow disease

...condly, they looked in more detail at the route of absorption in the gut. Using surgically modified sheep, they loaded a small area of the gut with a fluid mixture containing 0.5 grams of scrapie infected brain containing a large amount of the disease specific variant of the PrP protein and watched how it wa...

Carbon nanotube absorption measured in worms, cancer cells

...gan researchers have discovered how to measure the absorption of multi-walled carbon nanoparticles into worms and cancer cells, a breakthrough that will revolutionize scientists' understanding of how the particles impact the living environment. A team led by U-M chemical engineering professor Walter J. Weber ...

Heart-healthy compound in chocolate identified

...ntake of certain flavanols present in cocoa, their absorption into the circulation and their effects on cardiovascular function in humans," said UC Davis biochemist Hagen Schroeter, who co-authored the paper along with cardiologist Christian Heiss of the Heinrich-Heine University. "The results of this study pr...

Alternatives to the use of nitrate as a fertiliser

...n the pea plant there is greater regulation of the absorption of ammonia at the roots and control of the ammonium levels, above all in the leaf tissue. Moreover, important changes are observed in relation to the carbon and nitrogen of the majority aminoacids (asparragine in the pea and glutamine in spinach). Wi...

Anti-HIV drug has potential to prevent transmission in women

...tudy. Further evaluation is needed to determine if absorption of tenofovir into the bloodstream could be beneficial in enhancing the gel's effectiveness or could cause adverse long-term side effects. The study participants included 84 women, 18 to 45 years of age. Of those, 60 were not infected with HIV and 24...

UCLA paper examines how one disease may prevent another

...at damages the small intestine and interferes with absorption of nutrients from food, thrived on their "non-bread" diet. Wheat was discovered to be the culprit. Other diseases that benefit from severe caloric or protein restriction include kidney failure, type-II diabetes, inflammatory bowel disease and morbid ...

Gene thwarts some pathogens, gives access to others, could save crops

...r. This may have implications in terms of nutrient absorption or total plant biomass." The answers eventually could lead to increased crop yield and decreased produce loss due to Botrytis and other similar pathogens, he said. Currently, the gray mold disease caused by Botrytis destroys about 10 percent of the...

VCU Massey Cancer Center researchers identify a new class of anti-cancer drugs based on platinum

...atinum compound and demonstrated that its cellular absorption is significantly greater than that of neutral cisp...esistance to current drugs is due to poor cellular absorption and an increased ability of the cell to process or repair the damage caused by the chemotherapeutic ...

Virtual realities against pain

...gical aspects. Several personality traits (such as absorption and dissociation) have been identified as important factors for determining the level of involvement of the users, possibly modulating the effectiveness of technological progress. For example, some patients perceive a reduction in their visual field ...

Tiny airborne particles are a major cause of climate change

...ction of sunlight; less reflection of sunlight and absorption of radiation lead to warming. Policy makers have...of aerosol concentration on cloud cover. Radiation absorption is less affected by meteorology, so if the skeptics are right and meteorology is the main influence,...

Study identifies substances in grapefruit juice that interact dangerously with some drugs

...furanocoumarin-free juice on the ability to affect absorption of felodipine, an anti-hypertension drug known to interact with grapefruit juice "And we found that removing the furanocoumarins from grapefruit juice entirely got rid of this interaction," Watkins said. In this randomized study, 18 healthy voluntee...

For super-obese patients, duodenal switch beats gastric bypass

...ficult, and rerouting the intestines to reduce the absorption of calories. The duodenal switch--fewer than eight percent of all bariatric procedures performed nationwide--leaves a slightly larger stomach pouch but makes even more drastic alterations to the intestines to limit absorption, particularly of fats an...

Fast test for low blood flow in dogs detects early heart trouble

...dered to be the gold standard and relies on muscle absorption of microscopic beads in the heart muscle. Six dogs had surgery to place a clamp around a main artery, cutting in half the blood flow to the heart. After surgery, the dogs were injected with the drug adenosine to speed up their heartbeat and maxi...

Researchers link ocean organisms with increased cloud cover and potential climate change

...t the resulting increase in cloudiness reduced the absorption of sunlight by an amount comparable to what has be...timated that the isoprene emissions reduced energy absorption in the area by about 15 watts per square meter. "This is a huge signal," said Nenes. "You would no...

New study finds chocolate chip cookies lower cholesterol

...ls lower blood cholesterol by blocking cholesterol absorption from food during digestion. Psyllium is an excellent source of soluble fiber and when consumed regularly, it has a positive effect in the treatment of obesity, high blood pressure, irritable bowel syndrome, constipation, hemorrhoids and coronary art...

Unique tomatoes tops in disease-fighting antioxidants

...matoes can be used to increase both the intake and absorption of the health-beneficial compounds. The researc...or lycopene and beta carotene content. Lycopene absorption from the tangerine tomatoes was 2.5 times higher than that absorbed from the beta carotene-rich toma...

Lower carbon dioxide emissions from coal-fueled power plants possible with technology development

...al additive to increase the rate of carbon dioxide absorption into the solution, and assessing the overall capture process using computer models. Actual tests of the carbon capture process will be run on a small, pilot plant at the J.J. Pickle Research Campus. Rochelle is an expert on reducing industrial emi...

Making mice with enhanced color vision

... animal adds a second photoreceptor with different absorption properties, then by comparing both receptors, the red and green lights could always be distinguished." Normal mice failed to discriminate yellow versus red lights when the light intensities were set to give equal activation of their middle wavele...

New sensor detects gaseous chemical weapon surrogates in 45 seconds

.... LPAS is an exquisitely sensitive form of optical absorption spectroscopy, where a pulsed laser beam creates a brief absorption in a sample gas, which in turn creates a very small acoustic signal. A miniature quartz tuning fork ...

Swell gel could bring relief to back pain sufferers

...values - that is, once it enters the body - due to absorption of water by the particles. During their investigations, the research team injected the material into a damaged bovine intervertebral disc and increased the pH to biological levels by injecting an alkaline solution. Professor Freemont, who works...

Shedding new light on proteorhodopsin

...ht's color," said Walter. "Proteorhodopsin has an absorption spectrum that peaks in the green wavelengths, so the cells swam when they were exposed to green light, but stopped when they were exposed to red light." In the absence of the azide respiratory poison, green light had no effect on the flagellar mot...

Tropical forests -- Earth's air conditioner

...climate effect of these forests is to increase the absorption of sunlight, which can overwhelm the cooling effect of carbon storage. However, Caldeira believes it would be counterproductive to cut down forests in snowy areas, even if it could help to combat global warming. "A primary reason we are trying to ...

Scientists see DNA get 'sunburned' for the first time

...dy, the chemists used a technique called transient absorption to observe the DNA damage. Transient absorption is based on the idea that molecules absorb light at specific wavelengths, and it allows researchers ...

Protein enables discovery of quantum effect in photosynthesis

...fer takes place, said Blankenship. "Most of the absorption of light is carried out by a complex called the chlorosome that then transfers the energy to the trimeric protein that in turn transfers to the Reaction Center," Blankenship said. ...

Catching cancer's spread by watching hemoglobin

...e "off" state from the "on" state (when two-photon absorption occurs), the researchers remove unwanted scattered light from the data and can get high-quality signals from hemoglobin molecules. To map out the hemoglobin distribution, the researchers scan laser beams across the sample, a process that then re...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...ervatory in Banyuls-sur-mer, France. "This active absorption of hundreds of millions of tons of carbon per day is essential for maintaining the control of the planet’s climate by counteracting greenhouse effects due to human activities. Clearly, this storage capacity is affected by changes in the photosyntheti...