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Tag: "breathe" at biology news

Study offers clues to 'Broken Heart Syndrome'

...atients. Twenty percent of patients were unable to breathe on their own and needed a respirator. In all patients, cardiac catheterization showed characteristic abnormalities in the motion of the heart. One patient died of acute heart failure. The good news is that most patients who survived the first 48 ...

MIT's ocean model captures diversity of underwater forests

... dominate the ocean and produce half the oxygen we breathe on Earth. And it does so in a way that is consistent with the way real-world ecosystems evolve according to the principles of natural selection. Scientists use models such as this one to better understand the oceans' biological and chemical cycle...

Helium helps patients breathe easier

...so helping people with severe respiratory problems breathe easier. Researchers at the University of Alberta... "This means they don't have to work as hard to breathe and they are not so short of breath during exercise, which allows them to do more," said Dr. Neil Ev...

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

...abolism. In humans, about 2% of the oxygen used to breathe is transformed into this toxic “superoxide radical?molecule, instead of water. This production is increased in people affected by neurodegenerative diseases such as Alzheimer. A high amount of these molecules worsen these illnesses, so scientists are...

Walking molecule now carries packages

...arbon dioxide to the lungs, thereby allowing us to breathe ?and to live." Bartels cautions, however, that this research is still in its infancy. "In 2005 we invented the molecular walker, which moves in a straight line rather than hopping around in all directions as a normal molecule would do. Now it can c...

Salamanders suffer delayed effects of common herbicide

... their gills and develop lungs that enable them to breathe in air. Scientists then tracked their survival to near reproductive age. Results from the study, which lasted about 500 days, indicated that the two highest concentrations increased salamander mortality during exposure. However, this mortality b...

MIT's ocean model precisely mimics microbes' life cycles

... dominate the ocean and produce half the oxygen we breathe on Earth. And it does so in a way that is consistent with the way real-world ecosystems evolve according to the principles of natural selection. Scientists use models such as this one to better understand the oceans' biological and chemical cycle...

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

...inaudible pants. They are not, because they do not breathe through noses or mouths. Instead, insects draw in oxygen through holes in their bodies known as spiracles and pump the oxygen through a system of increasingly tiny tubes (tracheae) that deliver oxygen directly to tissues and muscles. Insects typicall...

Giant insects might reign if only there was more oxygen in the air

...was 35% during this period, compared to the 21% we breathe now, Kaiser said. Researchers have speculated that...ygen First, a bit of background: Insects don't breathe like we do and don't use blood to transport oxygen. They take in oxygen and expel carbon dioxide thr...

Steep oxygen decline halted first land colonization by Earth's sea creatures

... used by birds. They found that at sea level birds breathe 30 percent more efficiently than mammals and at 5,000 feet in elevation birds are 200 percent more efficient. Ward pictures a world in which dinosaurs were able to adapt to low atmospheric oxygen content relatively easily, and when oxygen levels r...

Scientists reverse evolution

...ions) and put it into Hoxa1, (which allows mice to breathe and survive after birth). And they disabled the re...ice born with the combined gene still were able to breathe and survive thanks to the Hoxa1 gene, and they could move their facial muscles, thanks to the small ...

Airborne mold spores increase kids' risk for multiple allergies

...roup of fungal spores--abundant in the air that we breathe every day--can make young children more susceptible to developing multiple allergies later in life. The team found that infants who were exposed to basidiospores and other airborne fungal spores--specifically penicillium/aspergillus and alternaria-...

Spinal cord bridge bypasses injury to restore mobility

...erating axons and result in loss of the ability to breathe or move arms or legs, depending upon the injury si...e that would help quadriplegics, who are unable to breathe without assistance, move their diaphragms on their own. In future animal studies he plans to undert...

Many cleaners, air fresheners may pose health risks when used indoors

...nt of one of the terpene-containing products would breathe in about one quarter of the total daily guideline value for particulate matter. Multi-house cleaning by a professional home cleaner. Under this scenario, a person who cleans four houses a day, five days per week, 50 weeks per year, would take in a...

Researchers win money to develop breath test to detect breast cancer

...ct the metabolites. Theoretically, a woman could breathe into an over-the-counter device and cancer-indicating metabolites would be attracted into the nanopockets, thus causing the pored surface to fill and become dense. Then, an electrical charge would be applied so that the straight particles would bend,...

Chemical warfare agent detection technology used to treat lung disease

...or respiratory conditions by simply asking them to breathe into it. The microDMx TM sensor is based on a D... inside a human lung simply by asking a patient to breathe into a device like this. For now our aim to use the microDMx sensor to develop better instruments wh...

Cells from amniotic fluid used to tissue-engineer a new trachea

...h incomplete, malformed or missing tracheas cannot breathe and must immediately go on heart-lung bypass, whic... all five lambs that survived to term were able to breathe spontaneously at birth, four of them with no sign of respiratory distress. (The other two lambs, twi...

Oceans turning to acid from rise in CO2

... global warming. Marine plants soak up CO2 as they breathe it in and convert it to food during photosynthesis. Organisms also use it to make their skeletons and shells, which eventually form sediments. With the explosion of fossil-fuel burning over the past 200 years, it has been estimated that more than a t...

Discovery of an American salamander where it shouldn't be: Korea

...s from the family Plethodontidae have no lungs and breathe through moist skin. Because these nocturnal animals live, breed and lay their eggs on land, they typically are found in areas with abundant rainfall, such as the eastern United States. They are most abundant in North and South America, with one lone ...

Innovative coating could give medical implants a longer life

...igned a versatile new two-sided coating that could breathe life into medical implants. Currently the longevity of certain medical implants suffers because bacteria, cells and proteins in the body gradually accumulate on the devices (known as fouling), compromising their performance and threatening patients ...

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