Tag: "spiral" at biology news

Which came first, the moth or the cactus?

...ers are destroyed, fewer new cacti appear, and the spiral continues until both species disappear. Yet that hasn't happened, and Holland, assistant professor of ecology and evolutionary biology, spends several months each year observing moths and cacti in the Mexican desert to document why. Holland, whos...

Crystal structure enables tailoring of pharmaceuticals against asthma

...dentical subunits, each of them consisting of four spiral structures that span the nuclear membrane. Also the exact position and characteristics of the active sites, where activating or blocking molecules can bind, have been identified. With this knowledge it is now possible to tailor new molecules that can...

A living memory chip, black holes on the loose, and a clearer picture of ocean currents

...t, and they must spin in opposite directions. They spiral toward one another, and when they merge, they are kicked in a direction perpendicular to the orbital plane. Some astrophysicists have argued that such conditions are rather unlikely. The probability that black hole ejection will occur remains an ...

TXNIP -- regulator of glucose homeostasis and potential diabetes drug target and more

...ing food production and perpetuates the relentless spiral of further malnutrition, infection, disease, poverty and socioeconomic and political instability. CONTACT: Ulrich Schaible London School of Hygiene & Tropical Medicine Infectious and Tropical Diseases Immunology Unit London, WC1E 7HT United Kingdom...

Study shows isolation of stem cells may lead to a treatment for hearing loss

... highly specialized hair cells. Docked inside the spiral duct of the human cochlea are ~15,000 hair cells, which are highly specialized neuroepithelial cells that enable us to hear a violin or a whisper. These hair cells differ in length by minuscule amounts and are set in motion by specific frequencies o...

Protein averts cell suicide but might contribute to cancer

... why the enzyme makes mistakes. DNA resembles a spiral staircase that is made from separate halves, with half-steps protruding from each. The half-steps fit together down the center to form the complete staircase. In DNA, the half-steps are known as the bases the A's, C's, G's and T's that run the l...

Biodesign Institute takes part in $14.4M NIH chemical defense grant

...herwise, the body's cholinergic system can quickly spiral out of control. Mor is most interested in a chemical cousin of AChE, called butyrylcholinesterase (BChE), which is found in serum plasma and the liver. BChE can also degrade acetylcholine, but it also seems to play a role as the body's vacuum clea...

UTSA awarded $900,000 NSF grant to support undergraduate scholars

...lready doing research investigating wave formation spiral neuron waves in the brain and how they originate and act. "We want this to be a top end scholarship for UTSA's best and brightest students on campus," said David Senseman, assistant professor of biology and UMB Scholar grant collaborator. Additi...

Gene chip technology shows potential for identifying life-threatening blood infection

... infections, including pneumonia, that can quickly spiral out of control and lead to sepsis. Although both conditions are life-threatening because of their threat to major organs, sepsis is more lethal. In the United States, about 750,000 cases occur annually, and one-third of patients die - a toll greate...

Alexander Gottschalk receives 2006 Benedict Cassen Prize for research in nuclear medicine

...and negative predictive value of contrast-enhanced spiral computed tomography (spiral CT) for the diagnosis of pulmonary embolism. "I am so proud to receive this award and to be included in a group that includes many friends and distinguished colleagues," said Gottschalk. "I was very fortunate to have rem...

Getting ahead of cancer: SPECT/Spiral CT technology enhances bone scanning, earlier diagnosis

... of single photon emission tomography (SPECT) with spiral computed tomography (CT) scanners--creates high qu...bone scanning--is enhanced by combining SPECT with spiral CT," explained Wolfgang Rmer, assistant professor and vice chair of the Clinic of Nuclear Medicine a...

Imbalance may trigger advance from fatty liver to liver failure

...ntent of the liver appears to trigger the downward spiral that leads some with fatty liver disease to advance to full-blown liver failure, according to a new study in the May Cell Metabolism. Researchers at the University of Alberta, Edmonton found evidence in mice that a disproportionate ratio of two phosp...

Stomach receptor for H. pylori discovered

...Molecular Biology journal. Helicobacter pylori are spiral shaped bacteria that live in the thick layer of mucus that covers the stomach lining. The bacteria are found everywhere in the world, but are especially prevalent in developing countries, where up to 80% of children and 90% of adults can have laborat...

Pleasing plant shapes explained by new computer model

...l organs around a central axis that results in the spiral patterns seen in most plants beginning at the mol...ularly-spaced intervals. This creates the striking spiral patterns of seeds observed in sunflowers, daisies, and many other plants. Other patterns, such as b...

Protein 'nanosprings' most resilient found in nature

...g of 24 or more repeats might form a super-helical spiral with spring-like properties, the researchers said....mon protein structures, characterized by a single, spiral chain of amino acids stabilized by hydrogen bonds. "We live in a world of forces," Bennett continue...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

...ate, allowing stocks to continue on their downward spiral and condemning fishers to become even more vulnerable," WorldFish says. "Yet there is a very real risk that this will happen if our rehabilitation response is developed without due thought given to the complexities involved and is dominated by easy...

Moderate exercise may delay congestive heart failure, CU-Boulder study suggests

...cise has a potential role in stemming the downward spiral in heart failure," he said. Moore said a unique feature of the CU-Boulder study was that the delay in the onset of CHF in the rats through moderate exercise was accomplished without reducing hypertension, or high blood pressure, in the animals. Mos...

Low-level exercise delays heart failure, markedly extends lives, even with hypertension

...cise has a potential role in stemming the downward spiral in heart failure," Moore said. The paper, "Low-int...etabolism, which is one theory behind the downward spiral to heart failure. When does heart failure start, at what point can exercise have the most effect ...

A genome wide search for genes underlying anxiety disorders turned up unexpected candidates

...ch thing as a single "fear" gene that lets anxiety spiral out of control when the gene's regulation is disturbed, making it difficult to identify the genetic roots of anxiety disorders. For their study, the scientists relied on inbred mouse strains that differ considerably in their natural anxiety levels. ...

DFG to fund nine clinical trials

...fits of annual screening by means of multidetector spiral CT, or MSCT, for patients with an increased risk of lung cancer. In Germany over 42,000 people are diagnosed with lung cancer each year, primarily smokers. (Total funding: 651,911. Coordinator: Prof. Nikolaus Becker, German Cancer Research Center, He...

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(Date:4/16/2014)... of the Physical Biosciences Division of Lawrence Berkeley ... is recognized as a leading authority on the ... and their application to systems and synthetic biology, ... the 2013 Ernest Orlando Lawrence Award by U.S. ... the Department of Energy (DOE),s highest scientific honor, ...
(Date:4/16/2014)... or to conquer the world? Surprisingly, bacteria also ... in Munich have now shown how these organisms ... , The bacterium Bacillus subtilis is ... on agar surfaces by means of flagella. Alternatively, ... the bacteria proliferate most effectively in this stationary ...
(Date:4/16/2014)... Prechtl, Leo Heim and their colleagues at the University ... method of generating hydrogen using water and formaldehyde. The ... when it comes to fuel cell technologies. The results ... using water and formaldehyde", have recently been published in ... applications, the new approach can be used to recycle ...
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