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Tag: "excess" at biology news

Researchers find ways to turn manure into power

...growing. Other trends contributing to a potential excess are increasing imports of grain-based nutrients to feed the cattle; less irrigation water; and the switch to crops which use less water and require fewer nutrients. "Things are in reasonable shape now, but in 10, 20 or 30 years from now, we need to ...

The ecological effects of the Chernobyl disaster

...ermine an ecosystem's ability to "clean" itself of excess radiation. Oleksander Orlov's (Ukrainian Scientific Research Institute) presentation, "The distribution and cycling of 137Cs in forests of the Chernobyl exclusion zone," will focus on 137Cs levels in three 50-year old Scotch Pine forests. Forest lit...

Hurricane aftermath: Infectious disease threats from common, not exotic, diseases

...lso pose a threat. Mold growth is an indicator of excess moisture, and much will need to be done to dry out New Orleans and clean up mold growth. Some environmental molds can cause allergic reactions. ...

Water management in cells

...osmosis. Cells activate various channels to remove excess water and salt or osmotically active particles from the cell. Tomassen studied cells that are highly sensitive for osmotic disruption. He discovered that cells permeable for water can more easily respond to changes in salt concentrations and that v...

Two designer drugs hit same lung cancer target, but only one is effective

...Erbitux. They reported that both drugs blocked the excess signals in cells with normal EGFR, but only Iressa was significantly effective in those carrying a mutant EGFR. "It tells us something about the difference in the drugs' ability to cause a regression of the cancer by shutting down the abnormally act...

Sea Ice May Be on Increase in the Antarctic

...esearchers said. The team found that mice with an excess of the protein Sirt1 in cells of the pancreas have...ulin hormone. Mice genetically modified to have an excess of Sirt1 in b cells of the pancreas had improved glucose tolerance and enhanced insulin secretion in...

Newly Discovered Role for Heart Response Enzyme May Yield Better Heart Failure Therapy

...heart failure patients, chronic stress leads to an excess of adrenaline, over-stimulating beta-adrenergic receptors, a process that results in receptor desensitization and loss, Rockman said. Earlier work by Rockman's team identified PI(3)K as being required for beta-adrenergic receptors to be drawn back i...

Life-extending protein keeps blood sugar in check

...esearchers said. The team found that mice with an excess of the protein Sirt1 in cells of the pancreas have...ulin hormone. Mice genetically modified to have an excess of Sirt1 in b cells of the pancreas had improved glucose tolerance and enhanced insulin secretion in...

Targeting a key enzyme with gene therapy reversed course of Alzheimer's disease in mouse models

... all brains, healthy brains are able to clear away excess amounts. Brains of people with Alzheimer's disease, on the other hand, are unable to control beta amyloid accumulation. For several years now, drug companies have been trying to find a drug that inhibits BACE1 and thus prevent beta amyloid from buil...

UCSD study clarifies insulin's role in blocking release of energy in patients with type II diabetes

...ides, commonly known as fat. If a person is obese, excess triglycerides are stored in the adipocytes. The new study shows that insulin weakens the normal linkage between catecholamine receptors and the turn-on of PKA. “If insulin levels get too high for too long a time ?which happens in many patients with ...

UF researchers kill resistant bugs one bandage at a time

...uze, it makes the material superabsorbent, pulling excess moisture away from the sore. And its microbicidal properties keep bacteria from growing in the wound and protect it from infections. Bacteria in a wound "is like jet fuel for these bugs," Schultz said. "Gauze is still the most commonly used dressing...

Envisat and ERS-2 reveal hidden side of Hurricane Rita

...urface wind fields ?showing maximum wind speeds in excess of 200 kilometres per hour. "The most detailed information about hurricane dynamics and characteristics are obtained from dedicated flights by hurricane hunter aircraft," explains Hans Graber of CSTARS. "However these flight missions cannot always ...

Mechanism regulating tooth shape formulation found

...t produce ectodin and teeth that lack ectodin with excess amounts of cusp inducing protein (bone morphogenet...eeth producing ectodin develop quite normally with excess BMP, teeth without ectodin had a markedly accelerated induction of cusps. Indeed the researchers wer...

Discovery of T-cell 'traffic control' boosts new drug promise

... autoimmune disease multiple sclerosis by blocking excess S1P action. The research also shows the promise of similar strategies to prevent rejection of transplanted organs and tissues without compromising essential immune defenses. The emerging view brings together research findings on S1P's effect on both...

Study shows eutrophic lakes may not recover for a millennium

... fertilizers, is the primary source of much of the excess nutrients responsible for fouling lakes. In rich farming areas, like southern Wisconsin, the routine application of chemical fertilizers and phosphorus-laden manure, has resulted in the gradual accumulation of phosphorus in the soil, which, ultimatel...

Leptin-signaling Protein Maintains Normal Body Weight And Energy Balance In Mice

...ng fish and they are using the income from selling excess catch to obtain medical attention, including HIV and AIDS care and medicines," he says. Says Prof. Richard Mkandawire, senior NEPAD Agriculture Advisor: "For a relatively small investment, the international community has an opportunity to bring abou...

Crisis in African fish supplies looms, experts warn Africa leaders

...ng fish and they are using the income from selling excess catch to obtain medical attention, including HIV and AIDS care and medicines," he says. Says Prof. Richard Mkandawire, senior NEPAD Agriculture Advisor: "For a relatively small investment, the international community has an opportunity to bring abou...

Climate model links higher temperatures to prehistoric extinction

...gnificant decrease in mast cell numbers due to the excess of IFNγ. When researchers tried to culture mast cells from the bone marrow of these mice, the mast cells died. Furthermore, a separate strain of mice with the same mutation as the first strain, but that had also been engineered to prevent IFN&...

VCU study shows hormone-like molecule kills cells that cause inflammation in allergic disease

...gnificant decrease in mast cell numbers due to the excess of IFNγ. When researchers tried to culture mast cells from the bone marrow of these mice, the mast cells died. Furthermore, a separate strain of mice with the same mutation as the first strain, but that had also been engineered to prevent IFN&...

Newly discovered genetic disease sheds light on body's water balance

Two infant boys whose bodies were overloaded with excess fluid have led UCSF pediatricians to the discovery...neys were inappropriately retaining water, and the excess fluids were diluting blood sodium levels. The usual diagnosis for this condition is Syndrome of Ina...

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