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Tag: "limiting" at biology news

CSIRO scientists join fight to save 'Tassie devil'

...searchers to remove known infected devils, in turn limiting the spread of the disease.” To date AAHL scientists have processed and examined 29 lesions from 12 affected animals and have also collected and processed a further 30 affected animals where both tumour tissue and tumours grown in the laboratory we...

Hormone helps mice 'hibernate,' survive starvation

...they had just eaten,” said Dr. Kliewer. Because limiting food consumption is known to have a range of beneficial effects, such as lowering blood pressure, cholesterol and glucose levels in the blood, Dr. Kliewer is interested in understanding how FGF21 impacts these processes. “We want to see if we can ...

Runners -- Let thirst be your guide

...ercise activities, and that it can be prevented by limiting fluid intake while exercising, he says. But despite this knowledge, Verbalis points out that “unfortunately, we are not seeing this condition go away." “The public’s impression of the amount of water that is necessary to drink for good health is n...

Resistant HIV quickly hides in infants' cells

...s?CD4+ T cells where it can hide for years, likely limiting their options for future treatment. The study is p...emic, although important strides have been made in limiting transmission with antiviral drug therapies before, during, and following birth. In the last few dec...

Scientists seek useful traits in wild cottons

...iversity for really spectacular change. Aside from limiting fiber quality and yield potential, narrow genetics makes them more susceptible to insects and disease." Gannaway and other scientists believe future progress in cotton breeding can only be achieved if sufficient genetic variability remains i...

Blood sugar's manufacture limited by building blocks' supply

...trols blood sugar's manufacture in a novel way: by limiting the supply of its building blocks. The findings ar...t of fasting hypoglycemia in the mutant animals by limiting the availability of a glucose substrate called pyruvate. Indeed, the mice had markedly reduced ac...

The penalty of having a sister -- why sibling sex matters for male saiga antelopes

...s - being smaller than average is one of the major limiting factors for reproductive success. Aline Kühl from Imperial College London's Division of Biology, lead author of the paper, explains that although they do not yet understand the precise mechanism behind this suboptimal development in male twins, i...

How fish species suffer as a result of warmer waters

...gen uptake and supply to tissues is the key factor limiting the stock size of a fish species under heat stress. Scientists of the Alfred Wegener Institute for Polar and Marine Research in Bremerhaven investigated the relationship between seasonal water temperature and population density using eelpout (Zoar...

New findings blow a decade of assumptions out of the water

...c Ocean because it is so vast. Iron may still be a limiting factor in nitrogen fixation, but if it is, then the Pacific and Indian oceans are getting iron from some source other than atmospheric dust, Deutsch says. The new research also means places where nitrogen is being fixed by certain microorganisms a...

Antivirals effectively curb influenza virus

...dministered oseltamivir might have an advantage in limiting spread. In addressing the limitations to their research, the authors call for further studies into antiviral efficacy. "Trials in non-household settings where influenza readily spreads ?such as schools, homes for the elderly and workplaces ?would...

Living with water scarcity -- world must act now

...e water needed for irrigated agriculture. Clearly limiting agricultural water use is key for environmental sustainability. Therein lies the dilemma. More people require more water for more food; more water is essential in the fight against poverty; yet we should limit the amount of water taken from ecosyste...

Too much of a good thing? Excess nutrients or water limit biodiversity

...diversity occurs because increasing the amounts of limiting resources, such as nitrogen and water, makes an ec...ant diversity is directly related to the number of limiting factors (such as soil moisture, nitrogen, phosphorous, potassium and water)." It also helps expl...

Controlling antibiotics and antibiotic resistance in hospitals

... prevalence of antibiotic resistance, while simply limiting broad spectrum drugs helped prevent resistance. "We think this may be because wrong decisions are made about which antibiotics are made available. Other studies have shown evidence that restricting formularies to previously effective antibiotics c...

Seals protect brain, conserve oxygen by turning off shivering response on icy dives

... and only occasionally perform very long dives. By limiting dive duration, seals maintain aerobic metabolism, avoid lactate buildup that occurs in the face of insufficient oxygen and require little time to recover, Folkow explained. Seals often spend 80-90% of their time at sea underwater, he said. Seals i...

Mayo discovers protein as potential tactic to prevent tumors

...re tumors, research is providing new approaches to limiting cancer from growing and spreading," Dr. Tindall said. "With this new understanding of the biology driven by critical dual functions of CDK2, the cancer community can focus on ways to regulate a mechanism that the cell contains to prevent damaged gene...

Exposure to dioxins influences male reproductive system, study of Vietnam veterans concludes

...e Agent Orange affects male reproductive health by limiting the growth of the prostate gland and lowering testosterone levels, researchers at UT Southwestern Medical Center have found in a cohort study of more than 2,000 Air Force veterans who served during the Vietnam War. The study, published in the Novem...

Researchers barcode DNA of Venice museum's vast fungi collection

...it or mushroom to identify them. "This can be very limiting because mushrooms are only produced seasonally, with some species only fruiting once every several years," said Garbelotto. "The database we are creating will allow people to identify the fungi present in plants, in the soil and in the air at any tim...

New biologic treatment for tennis elbow may replace surgery for chronic sufferers

...eatment for their condition or had left the study, limiting further analysis to the PRP-treated patients. At 6 months post-treatment, the PRP-treated patients' visual analog pain scores had improved 81 percent over their baseline scores. At a 2-year evaluation, 93 percent of these patients reported "comple...

UWM brain research supports drug development from jellyfish protein

...alcium-binding proteins decline with age, however, limiting the brain's ability to control or handle the amount of calcium "allowed in." Aequorin, the jellyfish protein, appears to be a viable substitute. Moyer, like Underwood, is interested in the "calcium hypothesis of aging and dementia," which is jus...

No-mow grass may be coming to your yard soon

... might be able to dwarf grass and keep it green by limiting brassinosteroids or increase the yield of rice by ...o Matsuoka's group in Japan, she said, showed that limiting brassinosteroids in rice affected leaf angle and improved yield in densely planted fields. Vert an...

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