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Tag: "stress" at biology news

Autistic brain has fewer neurons for processing emotion

... cause the neuron loss, or the heightened level of stress and anxiety commonly observed in patients with autism could, over time, lead to a loss of neurons. More studies are needed to pinpoint exactly why autistic brains have fewer neurons in the amygdala, she adds. "We're in the very early stages of und...

Researchers uncover new mechanism of tumor suppressor

...hromatin and regulates cell growth, proliferation, stress responses and aging. We hope this discovery opens up new opportunities to establish novel targets to prevent and treat cancer," said Kutateladze, a NARSAD Young Investigator and an American Cancer Society Research Scholar. Research in Kutateladze's ...

Heart has enough oxygen to survive hypothermia, CPR crucial

... oxygen the body needs when hypothermic, I want to stress the importance of starting and continuing cardiopulmonary resuscitation (CPR) efforts with all victims of hypothermia," Tveita said. Doctors typically cease CPR efforts in a normothermic patient after 30 minutes. But CPR should continue on hypothermi...

Cornell researchers find serious fish virus in Northeast for first time

...cts how the virus spreads because warmer water can stress fish, thereby lowering their natural defenses and making them more vulnerable. ...

Wild vs. lab rodent comparison supports hygiene hypothesis

...hy people in industrialized societies that greatly stress hygiene have higher rates of allergy and autoimmun...ieties, such as lack of exercise, increased mental stress and the consumption of processed food. Duke members of the research team included Aditya Devalapall...

Dominant meerkats render rivals infertile

...eriod, leading to dramatically increased levels of stress hormones and a collapse in fertility. This tactic reduces conception rates and increases abortion rates among the evicted subordinates, who are only allowed to return to the group after the dominant female has given birth. The dominant female ben...

Researcher gives hard thoughts on soft inheritance

...legs. Neo-Lamarckian views of evolutionary change stress the importance of the environment in altering inhe...d, providing pups the beneficial outcome to handle stress later in life. Not enough nurturing and grooming, and the gene never gets turned on. Richards says...

Infected for life

...system. When a latent infection is reactivated (by stress of many kinds), HSV-1 proteins are synthesized and new infectious virus particles are formed. These virus particles migrate along the neuronal axons to the epithelial cells of the skin. Viral growth in the skin, or other mucous membranes where nerves...

Triple threat polymer captures and releases

... known as an increased modulus value ?a measure of stress versus strain. "When you pull on a sponge, the water comes back out," she said. "But in our case, because our sponge and the channels within it are essentially nanoscopic, the water cannot get out, at least not fast enough to allow for a reorga...

Recent, rapid climate change is driving evolution of animal species

...asons while simultaneously alleviating winter cold stress without imposing summer heat stress. In short, northern climates are becoming more like those in the south. "Over the past 40 years, animal species have been extending their range toward the poles and populations have been migrating, developing or ...

New understanding of parasite cell structures may provide treatments for serious tropical diseases

... glycolipids--they are cleaved in response to cell stress caused by changes in osmotic pressure and relative...y bites. "We found that putting these cells under stress similar to that initially encountered by the trypanosome inside the fly caused the parasites to clea...

Eco-friendly bug sucker

...e fresh produce. The technique, called metabolic stress disinfection (MSDD), was developed by Manuel Lagunas-Solar and his team at University of California, Davis (Journal of the Science of Food and Agriculture DOI 10.1002/jsfa2538). Tim Essert, the Principle Electronics Engineer on the project, explain...

Diabetes research takes wing thanks to long-lived fruit fly

...nding the factors that determine how nutrition and stress set the foundation for metabolic syndrome and diab...cusing on a cell signaling system that responds to stress and works in tandem with the insulin receptor that is central to diabetes. They recently received $2...

K-Staters design and build a low-cost remote sensing tool for environmental studies

...out small groups of plants and their environmental stress level. At just 15 pounds with payload, the bantam...ation are there, but more importantly, to know the stress status of the plants: Is there water stress? Are the plants photosynthesizing at a high rate? We sho...

Just like us, social stress prompts hamsters to overeat, gain weight

Put a mouse or a rat under stress and what does it do? It stops eating. Humans should be so lucky. When people suffer nontraumatic stress they often head for the refrigerator, producing unhealthy extra pounds. When Syrian hamsters, which...

Newborn screening can cause unnecessary parental stress

...he baby proves negative on retesting, and that the stress could be alleviated by better education for parent...eculates. "But our results also show that parental stress was greater when families didn't have adequate information and understanding." Two-thirds of parent...

Free radical cell death switch identified

...t is a good metaphor for the damage that oxidative stress is causing to neurons and other types of cells ove...DNA, proteins, and lipids. A lifetime of oxidative stress leads to general cellular deterioration associated with aging and degenerative diseases. How the ox...

Common carp sheds new light on surviving in extreme environments

...d subject for working out how animals can tolerate stress because the underlying mechanisms are so exaggerated and displayed so clearly. We now need to investigate whether the protein is involved in sustaining normal blood flow through tissue capillaries and oxygen delivery during difficult times." ...

Analysis of breast-cancer gene role offers promising target

...for treatment with targeting agents. Moreover, we stress the value of individual tumor cell analysis for providing information that cannot be obtained by conventional pathological examination." Dr. Debu Tripathy, professor of internal medicine, director of the Komen/UT Southwestern Breast Cancer Researc...

Adults who go to bed lonely get stress hormone boost next morning

...he next morning. Elevated levels of cortisol -- a stress hormone linked to depression, obesity and other he...mful to physical health. But in the short term the stress hormone is adaptive and helpful, according to Adam. "Cortisol helps us respond to stressful exper...

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