Tag: "decreases" at biology news

Food-crop yields in future greenhouse-gas conditions lower than expected

...primarily because CO2 increases photosynthesis and decreases crop water use. Although more than 340 independent chamber studies have been analyzed to project yields under rising CO2 levels, most plants grown in enclosures can differ greatly from those grown in farm fields, Long said. FACE has been the only te...

NASA study solves ocean plant mystery

...ropical Pacific, correction for this "iron-effect" decreases scientists' estimates of how much carbon ocean plants photosynthesize for the region by roughly two billion tons. This figure represents a tremendous amount of carbon that remains in the atmosphere that scientists previously thought were being remove...

Tramiprosate (Alzhemed? preclinical results published in Neurobiology of Aging

... in a non-fibrillar form. Tramiprosate (Alzhemed? decreases by 38% (p-value Tramiprosate (Alzhemed? treatmen...60% of Aβ levels in plasma. There were significant decreases in brain levels of both soluble Aβ40 (30%; p-value of 0.014) and insoluble Aβ40 (31%; p-value of 0.0...

Tetracycline plus teeth equal gray smile

...ygiene care and took potassium nitrate, which also decreases sensitivity after bleaching. Then, after the three week time period, the patient uses the trays for another three weeks. "The results significantly boosted my patient's self-esteem and he was thoroughly pleased with the results," says Dr. Capehart...

How nice, brown rice: Study shows rice bran lowers blood pressure in rats

...tes the arteries of hypertensive patients and thus decreases their risk of stroke, heart attack and kidney disease. But the drugs can also carry side effects: chronic cough, allergic reactions, dizziness, even kidney problems. What if some component of our diet could work in similar fashion, with few or no si...

Chocolate milk could be key to longer, healthier life

...s we grow older the amount of mitochondria we have decreases and with it our respiratory capacity. "This decl...mitochondria since they are a cause of age-related decreases in muscle function. "If successful, we could prove that our non-pharmaceutical means to increase m...

Suicide risk does not increase when adults start using antidepressants, study finds

...ous suicide attempts or death by suicide generally decreases in the weeks after patients start taking antidepressant medication, according to a new study led by Group Health Cooperative researchers and published in the January issue of The American Journal of Psychiatry. The study also found that the risk of s...

Dying of excitement

...cted rat brain cells. Whether the mutant promoter decreases EAAT2 expression in the human brain, as would be predicted, remains to be tested. ...

Contaminants linked to sturgeon decline in Columbia river

... the impounded areas above dams. In the past, any decreases in population were thought to be linked to the presence of dams, which have changed the temperature and flow of the river. And despite fish ladders in place for salmon, the bottom-dwelling white sturgeon rarely navigate dams successfully making it di...

Hap1 protein links circulating insulin to brain circuits that regulate feeding behavior in mice

...ating effect on feeding behavior. Because insulin decreases Hap1 levels, and reducing Hap1 decreases the GABA receptor activity, we believe Hap1 is the link between circulating insulin and the regulati...

Hopkins researchers discover genetic switch that turns off an oxygen-poor cell's combustion engine

...F-1 as it helps cell survive when a lack of oxygen decreases production of an energy-rich molecule called ATP and increases production of toxic molecules. ATP supplies energy the cell needs to perform each of its many chemical reactions and tasks, and in this way acts as the "currency" for the cell's energy e...

Key heart and Alzheimer's disease protein imaged for first time in native state

...rom 20 to 90 percent, and the typical age of onset decreases from 84 years to 68 years. The presence of one apoE4 allele results in an estimated 45 percent chance of developing Alzheimer's by 85 years of age. With two apoE4 alleles, the risk increases to 50?0 percent. "Insights into the basic biology of apoE-...

Stanford study of owls finds link in brain between sight and sound

...nothing is known about how the brain increases and decreases signaling," Winkowski said. "We want to discover the cellular mechanisms of how attention works." "Once we learn the circuitry for attention, we plan to use that to drive learning in an efficient way," said Knudsen. He added that they eventually hop...

Environmental tobacco smoke linked to behavior problems in children and pre-teens

...ior and school problems as rated by teachers; and, decreases in the ability to adapt to behavior problems. "Th..., even at extremely low levels, is associated with decreases in certain cognitive skills, including reading, math, and logic and reasoning, in children and adole...

Study shows AIDS drugs cost-effective, care underfunded

...available online. While HAART has led to dramatic decreases in illness and death of patients with HIV, it does...adox is that paying high costs for antiretrovirals decreases overall cost of care," said senior author Michael Saag, MD. The HAART costs were about the same for ...

New peptide antibiotic isolated from American oyster

...uch as dermo (Perkinsus marinus) have caused major decreases in oyster productivity -- bacterial pathogens -- such as Vibrio vulnificus that can cause a food-borne illness are a human health concern, according to Noga. This is the first time that researchers have isolated an antimicrobial peptide from any oys...

UCR environmental scientists propose chemical solution to cleaning California's Salton Sea

...w reduces algae growth, improves water clarity and decreases the odors common at the lake," said Christopher Amrhein , professor of soil and environmental sciences and the lead author of the paper. "We found that alum and polyacrylamide were highly effective in removing both dissolved phosphorus and suspended...

Earliest European Farmers Left Little Genetic Mark On Modern Europe

...of voluntary HIV testing and counselling. Despite decreases in the rate of infection in certain countries, the...rammes in diverse settings have helped bring about decreases in HIV incidence—among young people in Uganda and Tanzania, among sex workers and their clients in T...

2005 AIDS figures released by WHO and UNAIDS

...of voluntary HIV testing and counselling. Despite decreases in the rate of infection in certain countries, the...rammes in diverse settings have helped bring about decreases in HIV incidence—among young people in Uganda and Tanzania, among sex workers and their clients in T...

UT Southwestern researchers unravel control of growing blood vessels

...nd grow. The level of Foxo4, in turn, increases or decreases depending on what kind of signals the smooth muscle receives. This complexity suggests many pathways for future treatments. For instance, a treatment might directly control the level of Foxo4, or it may involve one of the signals that control Foxo4....

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