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Tag: "sudden" at biology news

Did humans cause ecosystem collapse in ancient Australia?

... us what types of plants the animals ate. We saw a sudden shift in plant type coincident with the arrival of humans. The shifting diet shed light on the extinctions. The animals that relied mostly on the more palatable plant forms died out, such as Genyornis, while the animals that adapted to the less nutri...

New understanding of jet lag

... rapidly adjust to abrupt light cycle shifts. This sudden disruption in the normal pattern can compromise the normal function of organs. The result often is sleeplessness or sleepiness, reduced alertness, indigestion, fatigue and possibly ulcers. "This new finding adds support to the emerging view that the...

Study uncovers dirty little secret: Soil emissions are much-bigger-than-expected component of air pollution

... processing nitrogen. The satellite then detects a sudden pulse of nitrogen oxides, Jaeglé said. Similarly, emissions in the mid-latitudes of the Northern Hemisphere spike during the growing season, spurred by warmer temperatures after a cold winter, but also perhaps magnified by fertilizer use. "The soil ...

Researchers discover new route to hemoglobin synthesis

...o been reported, and there is an increased risk of sudden infant death syndrome. In the studies, newborns suffering from NAS were treated with opiates (morphine, methadone, paregoric, or tincture of opium), sedatives (phenobarbitone, diazepam or chlorpromazine) or supportive care only. None of the studies ...

Opiates Better Than Sedatives For Treating Newborns In Withdrawal

...o been reported, and there is an increased risk of sudden infant death syndrome. In the studies, newborns suffering from NAS were treated with opiates (morphine, methadone, paregoric, or tincture of opium), sedatives (phenobarbitone, diazepam or chlorpromazine) or supportive care only. None of the studies ...

New Lab Research May Help Those Deafened By Immune System Attack

...y, Carey notes, nearly all of the patients who had sudden hearing loss over hours or days had antibodies, and nearly all improved with steroids. Since this kind of rapid-onset hearing loss has historically been excluded from the formal definition of AISNHL, Carey suggests the definition may need re-examini...

Discovering an ecosystem beneath a collapsed Antarctic ice shelf

...ough in the northwestern Weddell Sea following the sudden Larsen B shelf collapse in 2002. "This is definitely the biggest thing I've ever been involved with in the Antarctic," said Eugene Domack, a professor at Hamilton College in New York and lead author of the report detailing the ecosystem. The article...

Spider blood found in 20 million year old fossil

...climbing up a tree when it was struck head-on by a sudden strong flow of resin. The spider then became engulfed in the resin and died. He argues that the shape and position of the blood droplets reveals which direction the spider was travelling in. It also reveals which of the spider's legs broke first. D...

Spiders help scientists discover how muscles relax

...t ventricle of the heart becomes enlarged, causing sudden death. It is caused by mutations in certain genes that encode several muscle proteins--some of which are related specifically to the myosin that Padron studies. ...

Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations

... dinosaurs about 65 million years ago. Before the sudden demise of dinosaurs and many other types of animals, which is thought to have resulted from a massive comet or asteroid striking Earth, mammals shared fairly similar body plans and also fairly similar genomes. Researchers speculate that the mass exti...

Scientists track stealth DNA elements in primate evolution

... of retrotranspositional quiescence, followed by a sudden outburst of human-specific retrotransposition activity in the past few million years, led Dr. Batzer and colleagues to formulate a new theory for the evolution of Alu elements, termed the "stealth driver" model. In the "stealth driver" model, low-act...

Stem cell therapy successfully treats heart attack in animals

...ding disturbances of heart rhythm that can lead to sudden cardiac death, and decreased muscle pumping function that can lead to congestive heart failure." The researchers are using a special kind of stem cell in an early stage of development, called adult mesenchymal stem cells, to avoid potential problems...

UN: World in big ecological mess

The emergence of new diseases, sudden changes in water quality, creation of coastal "dead zones," the collapse of fisheries and shifts in regional climate are just some of the potential consequences of humankind's degradation of the planet's ecosystems, according to a new United Nations-...

Climatologists discover deep-sea secret

...e southern hemisphere has, in the past, adapted to sudden changes in the north. The research published today... in the southern hemisphere play an active role in sudden climate changes. Today's climate in Europe and North America is greatly influenced by the gulf stre...

Bee mites suppress bee immunity, open door for viruses and bacteria

A non-native bee mite is causing the dramatic and sudden collapse of bee colonies across the country, but P...the emerging bees. This, however, does not lead to sudden hive collapse. Something else is involved that makes bee mites so harmful to bee colonies. The Penn...

Researchers find gene that may be at root of potato blight

...pecies cause root rot in soybean plants as well as sudden oak death, which is devastating stands of oak trees along California 's coast and is present in at least three other states. Kamoun conducted the multidisciplinary study with lead author Miles Armstrong and other researchers from the Scottish Crop R...

FDA Warns About Antipsychotic Drugs and Elderly

... be either heart-related (such as heart failure or sudden death) or from infections (pneumonia). The atypical antipsychotics fall into three drug classes based on their chemical structure. Because the increase in mortality was seen with atypical antipsychotic medications in all three chemical classes, the ...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

... that fertilizer runoff from big farms can trigger sudden explosions of marine algae capable of disrupting ocean ecosystems and even producing "dead zones" in the sea. Now a new study by Stanford University scientists presents the first direct evidence linking large-scale coastal farming to massive algal bl...

UNC launches study of liver injury caused by drugs

...g-induced liver injury is the most common cause of sudden liver failure nationwide and the most common reason why new drugs fail to obtain approval by the U.S. Food and Drug Administration, said Dr. Paul Watkins, DILIN Steering Committee chairman and the study's principal investigator at UNC. "This is the ...

Brain-mapping technique aids understanding of sleep, wakefulness

..., have excessive daytime sleepiness and experience sudden muscle weakness called cataplexy. Because orexin-producing neurons play such a key role in regulating sleep, determining how they are connected to other neurons in the brain is an important step toward understanding how and why we sleep. Mapping th...

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