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Tag: "stress" at biology news

Radio-tracking associated with 'dramatic shift' in water vole sex ratio

...o-collars clearly have the potential to cause some stress to water voles, and it is possible that this might...ptimal habitats, similar to the sex-ratio bias and stress response in food deprived water voles," they say. Researchers have long been aware that the techniq...

Best research work in the area of wine growing

...hetic activity in 4 grape varieties after a hydric stress event", studied the response to the hydric stress event of the grape, in order to enable suitable land irrigation policies to be made and actions carr...

Cancer related gene p53 not regulated as indicated by previous tissue culture research

... not necessary to activate p53 under conditions of stress or to prevent p53 from throwing a wrench into the cell cycle machinery, when nothing is wrong. "The chemical modifications of the p53 protein that we thought were essential for its normal function may just fine-tune the activity of the protein under...

Scientists discover the body's marijuana-like compounds are crucial for stress-induced pain relief

...ew drug of choice for those suffering from pain or stress conditions. Importantly, it would not require peop...s virtually erased this opioid-independent form of stress analgesia." If this is true, was there a compound that could also prolong the action of these compo...

Understanding biases in epidemic models important when making public health predictions

... of those exposed. However, Wearing was careful to stress that current health protection programs have shown their effectiveness in such situations as the recent SARS outbreak in Southeast Asia. "We are highlighting what 'may happen' if we don't pay careful attention to the inherent assumptions in the mode...

Inhaling large amounts of salt can cause hypertension

... of those exposed. However, Wearing was careful to stress that current health protection programs have shown their effectiveness in such situations as the recent SARS outbreak in Southeast Asia. "We are highlighting what 'may happen' if we don't pay careful attention to the inherent assumptions in the mode...

Field of beams - Novel system uses polarized light pulses to reveal crop health

... of those exposed. However, Wearing was careful to stress that current health protection programs have shown their effectiveness in such situations as the recent SARS outbreak in Southeast Asia. "We are highlighting what 'may happen' if we don't pay careful attention to the inherent assumptions in the mode...

Male Combat Veterans Rank High In Heart Disease Risk

...igating the association between exposure to combat stress and behavioral and physical risk factors in aging men who fought in these earlier conflicts and their counterparts who served in the military but saw no combat or are not veterans. Funded by the National Heart, Lung, and Blood Institute (NHLBI), the...

Fluorescing lab worms signal longer life spans

...rms that were genetically engineered to illuminate stress levels, implying living organisms have "hidden phy... green fluorescent "reporter" protein coupled to a stress protein that is present in most multicellular organisms as a monitor of cellular health. The eyelash...

USC researchers determine mechanism of action of chemotherapy drug

...hat they found was that the drug created oxidative stress in the tumor cells, increasing the levels of expre...h. "Our studies showed that MGd induces oxidative stress in cancer cells," says Hacia, who is a member of USC's Institute for Genetic Medicine, "and this lea...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

... creating environmental refugees who can often add stress to areas that may not be degraded. Desertification has other strong adverse impacts on non-drylands as well. In addition to dust storms, biophysical impacts include downstream flooding, impairment of global carbon sequestration capacity, and regiona...

New clue to cocaine addicts' quirky behavior

...s as schizophrenia, depression, and post-traumatic stress disorder, wrote the researchers. Yukiori Goto and Anthony A. Grace of the University of Pittsburgh described their findings in the July 21, 2005, issue of Neuron. In their studies, they sought to understand the effects of cocaine sensitization on th...

Endocannabinoids ?the brain's cannabis ?demonstrate novel modes of action to stress

...found that in both physiological and psychological stress situations, stress hormones act on the brain to stimulate the release of endogenous cannabinoids from neurons in the hy...

New Scripps Oceanography project to study sediments and ecosystem restoration in Venice lagoon

...ated by the organism) and could potentially induce stress on the local ecosystem. "This will be an integrated research project that will provide many valuable insights into several different aspects of environmental toxicology and environmental quality assessment," said Deheyn. "It will be extremely intere...

A new molecule discovered in the battle between plants and disease

...ession of the proAtPep1 gene. Cold and dehydration stress and exposure to ABA or MeSA did not affect the expression of proAtPep1, but wounding, exposing plants to methyl jasmonate (MeJA), or supplying plants with the AtPep1 peptide through cut petioles induced expression of the gene. Also expressed in respo...

Fundamental discovery -- Bone fracture

...ressed, helping the bone to absorb shock. When the stress is relaxed, they coil back to their original structure. The possible implications for human health are important, explained Georg E. Fantner, a UCSB doctoral student in physics and first author of the report. "The findings may lead to therapy for bo...

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

...at "for the same amount of cardiovascular and lung stress Armstrong is producing 8% more power, and yet producing less heat. These results have shown us how to improve already highly trained athletes by aiming at efficiency, which is a muscle phenomenon. But it's also nice to know," he added, "that as you g...

Penguin chicks exposed to human visitors experience spike in stress hormone

...osure reached 40 to 50 days old that they showed a stress response like the newly hatched chicks in areas fr... But it is unclear what later effects the elevated stress hormones might have. "We don't know yet what it means ?it might mean nothing, but it will take more...

Survival of heart patients on beta-blockers varies greatly with genetic variation

...e heartbeat and lowering blood pressure to relieve stress on the heart. They also block impulses that can cause rhythm disturbances. "Long-term therapy with beta-blockers is standard care for heart patients," Lanfear says. "Data from patients with acute myocardial infarction have shown that beta-blockers a...

Chemical 'band-aid' prevents heart failure in mice with muscular dystrophy

...ork harder and faster for 30 minutes. "During the stress test, 40 percent of the untreated mdx mice progressed to cardiac failure," says DeWayne Townsend, D.V.M., Ph.D., a post-doctoral fellow and co-first author of the study. "Even those that didn't reach the threshold were doing poorly. The control mice,...

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