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Tag: "events" at biology news

Cells re-energize to come back from the brink of death

...ed caspases. In turn, caspases trigger a series of events that kills the cell. Mitochondria are tiny structures that act as power plants to supply the cell with energy, but also hold the keys to the cells’ life and death. The process by which the membranes develop holes—mitochondrial outer membrane pe...

Brain inflammation may be friend, not foe, for Alzheimer's patients

...sts that doctors not rush in to turn off molecular events that scientists have widely considered to be detrimental in people with the disease. The findings could also renew efforts to develop a vaccine or other strategies against Alzheimer’s by engaging the body’s immune system. The team expected to see ...

Researchers track how spores break out of dormant state

...te a series of genetic, biochemical and structural events that result in the formation of metabolically dorm...mportant to gain fundamental insights into the key events in bacterial cell development.” The researchers, including Marco Plomp, lead author at LLNL, and ...

Now, self-healing materials can mimic human skin, healing again and again

...Ultimately, the ability to achieve further healing events is controlled by the availability of active catalyst,” said Kathleen S. Toohey, a U. of I. graduate student and lead author of the paper. “While we can pump more healing agent into the network, ‘scar tissue’ builds up in the coating and prevents the ...

Genetic factors are linked to fever following smallpox vaccination

...e link between genetic factors and certain adverse events related to smallpox vaccination. The study, publi...line, may have implications for predicting adverse events from other live vaccines. Immunization against infectious agents has been one of the greatest succe...

Small, self-controlled planes combine plant pathology and engineering

...plant disease, and mitigating potentially damaging events targeted at our nation’s agriculture and food supply.”...

The kapok connection -- Study explains rainforest similarities

...ully become established elsewhere, such improbable events become probable over 10 to 15 million years." Dick studied the rainforest form of Ceiba pentandra, a species of kapok that grows taller than a 16-story building, its head poking above the forest canopy. Its flowers produce more than 50 gallons ...

Prey not hard-wired to fear predators

...o the Yellowstone region, they caused a cascade of events including a change in elk distribution, more wariness in moose, and a change in coyote densities. By contrast , where wolves and grizzly bears were lost, migratory birds including warblers and hummingbirds were less abundant because moose over-brows...

Gene therapy study shows safety and statistically significant improvement in Parkinson's disease

...nson’s disease demonstrated both a lack of adverse events related to the gene therapy procedure and statisti...e brain compared to the untreated side. No adverse events related to the gene therapy procedure were reported throughout the duration of the 12-month study, o...

Cytomegalovirus exacerbates atherosclerosis through an autoimmune mechanism

...owever, it is well known that acute cardiovascular events may happen without the presence of the mentioned common risk factors. Recently inflammation and infectious agents have been shown to play an important role in the onset of acute cardiovascular events. The online, open-access PLoS ONE publishes a...

Mice with a migraine show signs of brain damage

... team was able to get an unprecedented look at the events that happen in the brain of a mouse as a migraine unfolds. The team uncovered a complex, unexpected tale of supply and demand regarding blood flow and oxygen. In short, the team found that the brain develops a voracious demand for energy as the o...

Salk scientists hammer out a pathway that promotes muscle cell survival in mice

...explore the part this enzyme plays in a cascade of events triggered by exercise-induced hormones and other signals. In this particular pathway, a molecular switch turns on a set of muscle-specific genes in response to exercise by releasing a brake that normally keeps these genes off. Learning how this pat...

Ecology in an era of globalization

...es: working globally and locally," and "Cascading events in linked ecological and socioeconomic systems....

Traumas like Sept. 11 make brains more reactive to fear

...tive in cases of PTSD. The findings suggest that events that trigger shock, fear and horror that are within a normal range -- may cause similar changes in the brain that traumas do. Victims may experience lingering symptoms (bad dreams, jumpiness, thinking about the incident and avoiding the site of the t...

Baumann Lab defines proteins that distinguish chromosome ends from DNA double-strand breaks

...ells. The mechanisms that initiate and drive these events are only poorly understood, but it is widely accepted that loss of chromosome end protection can initiate genomic instability through bridge-breakage-fusion cycles. It is, therefore, very important to understand the mechanism of chromosome end protec...

Study offers clues to 'Broken Heart Syndrome'

...s, while other women experience severely stressful events but don't develop Takotsubo cardiomyopathy," Dr. Regnante said. A surge of stress hormones likely plays a role, he said, but it is also possible that a blood clot temporarily blocks a major artery of the heart, then dissolves before being detected du...

Palau's coral reefs show differential habitat recovery following the 1998 bleaching event

...ill be likely subjected to repeated thermal stress events and water temperatures considerably higher than historical averages. Using underwater digital video cameras, van Woesik and his team examined the rate of coral recovery at 13 different sites, and found that recovery rates increased ove...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...l waking hours. The data captured voice-production events as short as 0.0316 seconds and as long as 100 s. On average, the teachers had 1,800 occurrences of voicing per hour at work, compared to 1,200 per hour during non-work periods (for a total of as many as 20,000 per day). Voicing occurred 23 percent of...

Do fruit flies have free will?

...at such variability cannot be due to simple random events but is generated spontaneously and non-randomly by the brain. These results caught computer scientist and lead author Alexander Maye from the University of Hamburg by surprise: "I would have never guessed that simple flies who otherwise keep bouncing...

Uniform language for describing genes of pathogenic and beneficial microbes

...ms that scientists can use to describe the complex events that occur when a pathogenic or beneficial microbe encounters its host. Understanding these events is crucial for developing new interventions for preventing infections by disease-causing microbes wh...

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