Tag: "resting" at biology news

Protein pulling -- Learning how proteins fold by pulling them apart

...ke it over the hill and wind its course to a final resting place -- its folded state. If it lacks the energy to clear the hill, it will slide back into a partially folded or misfolded state. Kiang and graduate student Nolan Harris's new approach to probing these energy states yields something akin to a map...

Link between immune system and mammary gland could shed new light on breast cancer

... uses Type 2 T helper cytokines as a signal to get resting mammary duct cells to begin dividing and differentiating to produce large numbers of milk-producing cells. These cells then release more cytokine molecules to get the body to make yet more milk producing cells. Using a mouse model, the scientists wer...

More swimmers means more pathogens in the water

...dings indicate that the swimmers stir up pathogens resting in the sediment. The Environmental Protection Agency does not require testing for microsporidian spores, C. parvum or G. lamblia in recreational waters, because of the cost and difficulty in measuring these pathogens. Regulations do require that wa...

Cancer stem cells similar to normal stem cells can thwart anti-cancer agents

...e researchers identified a very small, rare set of resting cancer stem cells in the lung cancer samples that looked and behaved much like normal adult lung tissue stem cells. Both the cancer and normal stem cells were protected equally by multiple drug resistance transporters, even if the bulk of the tumor r...

Tumor vessels identified by unique molecular markers

... cells that line blood vessels derived from normal resting tissues, regenerating tissues, and tumors. A comparison of the normal vessels revealed several organ-specific endothelial genes that could potentially aid in the delivery of molecular medicine to specific anatomical sites. The study also revealed 13 ...

Modeling the restless brain

...iseconds. "Our model suggests that the cortical resting state is not time-invariant, but instead contains ...al to generating and shaping brain activity in the resting and active brain. Empirical work on the human brain is challenging due to the fact that the brain...

Hearts of male and female rainbow trout are different

... when the trout heart is contracting and not under resting conditions. The study is entitled Sex Differenc...es of oxygen consumption and lactate release under resting conditions; the inhibition of oxidative metabolism with NaCN lowered cardiac performance dramati...

Breathing easy: When it comes to oxygen, a bug's life is full of it

...The insect respiratory system is so efficient that resting insects stop taking in air as they release carbon dioxide, according to research by Stefan K. Hetz of Humboldt University in Berlin, Germany. This allows them to keep oxygen and carbon dioxide levels in balance. Too great a concentration of oxygen is...

Freeze! Scientists film proteins at work by freezing them at different states

...arch done on proteins is based on their study in a resting state and their study in movement is extremely limited due to technological limitations. Today, a French team has made a movie of an enzyme (a protein that catalyses chemical reactions) found in bacteria. The achievement of this research is two-fold:...

Brain tumors coax important support from nearby immune system cells

...for shutting down microglia, which exist both in a resting state and an activated state. Tumors likely need microglia to be activated before they can convince them to send out growth signals. The tumor then exploits these signals to enable its rapid growth. If scientists can block microglia activation, they ...

500,000 years of climate history stored year by year

...calcium carbonate trickles down to find its final resting place at the bottom of Lake Van. Day by day during this period millions and millions of pollen grains float down to the depths. Together with lime they form a light-coloured layer of sediment, what is known as the summer sediment. In winter the co...

The metabolic response to colitis varies depending upon whether inflammation is chronic or acute

...ice with acute inflammation tended to have reduced resting energy expenditure. On the other hand, mice with chronic inflammation had significantly decreased resting energy expenditure. The data also suggested that mice with acute inflammation used fat as an ...

Weizmann Institute scientists discover genes that can slow cell division and may fight cancer

...ally stops cell division and returns the cell to a resting state. When that braking system is faulty, uncontrolled cell division and the growth of cancer can result. Weizmann Institute scientists studied this system of brakes, and identified a number of the genes involved. According to the study's find...

Neuroscientist Robert Sapolsky will discuss stress, health, Feb. 17 at AAAS meeting

...aboons, like unhealthy people, often have elevated resting levels of stress hormones. "Their reproductive system doesn't work as well, their wounds heal more slowly, they have elevated blood pressure and the anti-anxiety chemicals in their brain, which have a structural similarity to Valium, work differently...

Researchers find biological clock for smell in mice

... when the creatures are active than when they are resting in the day," Herzog speculated. "This might help them find food or mates when they are hungry for food or for love." Do the results suggest that women should splash on the Estee Lauder during the night so that men can notice all the more and shun th...

Fishy cooperation

...fish. (Watch a grouper signal to a giant moray eel resting in a cave by shaking its head in front of the moray in this video.)...

Researchers show that veins stiffen as we age

...e Lab on the Newark campus. While each subject lay resting on a gurney, various gauges, connected to computers, were placed on their arms and legs. An arterial cuff was attached to an upper arm to monitor blood pressure, and venous cuffs were placed around the upper thigh and upper arm to measure the blood f...

Michigan State researcher traces the evolution of honey bee gender

...ead a life of luxury their duties include eating, resting and mating. After hatching a female's life can take one of two directions. Fed a diet of royal jelly, the female hatchling will develop into a queen bee. If not, she will become one of the 20,000 to 60,000 worker bees tending to the needs of the h...

Study challenges belief that tree frogs depress metabolic rate after 'waxing' themselves

...rbance." Tree frogs characteristically go into a resting posture after wiping themselves, tucking their limbs tightly against or beneath their body and closing their eyes. The researchers found that this series of actions following "waxing" allows tree frogs (Phyllomedusa hypochondrialis) to limit rates of...

Composting may be alternative in wake of horse slaughter bill

...nate, could leave thousands of horses with nofinal resting ground. Composting may be an environmentally friendly option that fits in the"circle of life" frame of mind and may be less emotional, two arearesearchers said. On Sept. 7 the House approved the Act, which bans the slaughter ofhorses for huma...

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(Date:4/22/2014)... Scientists at the University of Massachusetts Amherst and the ... week report that they have discovered a new genus ... the Negro River in the Amazonia State of Brazil. ... Adlia Nogueira and Jos Antnio Alves-Gomes of INPA, describe ... the journal Proceedings of the Natural Sciences of ...
(Date:4/22/2014)... at the University of Kentucky has discovered new methods ... , The research, led by Peixuan Guo, professor ... the UK College of Pharmacy and Markey Cancer Center, ... Boiling-Resistant Anionic Polymer Material To Build Robust Structures with ... and Daniel L. Jasinski. , The article, which will ...
(Date:4/22/2014)... trip to Asia to coordinate with allies and ... at the Office of Naval Research (ONR) emphasized ... as an example of strong and growing ties ... the region. , The APTEP program, centered in ... the development of alternative energy technologies. It takes ...
Breaking Biology News(10 mins):New electric fish genus and species discovered in Brazil's Rio Negro 2RNA shows potential as boiling-resistant anionic polymer material for nanoarchitectures 2Full power: Alternative energy partnerships flourish in Asia 2Full power: Alternative energy partnerships flourish in Asia 3
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