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Tag: "increased" at biology news

Transfusion expert urges wider use of filtered blood

...Drug Administration. Part of the reason is fear of increased cost. However, Neil Blumberg, M.D., lead author of the study and a proponent of leukoreduction, argues that several cost-benefit analyses show that an upfront increase of $25 to $35 for each unit of filtered blood is offset by savings from less us...

Study suggests some drug resistance to influenza B medications

...re associated with annual outbreaks of illness and increased death rates worldwide, according to background inf...r suboptimal dosing for these viruses will lead to increased selection of viruses with high-level resistance.? “Influenza viruses evolve rapidly and nimbly, wh...

Gene tests and brain imaging reveal early dementia

...ermined variant of APOE that is associated with an increased risk of Alzheimer's. In her study, Johanna Lind was able to show that some of the people in this risk group had reduced parietal lobe activity, detectable using an MR camera, and that these same people were the ones who went on to suffer memory de...

Allergy to hair dye increasing

...ir colouring products. By 2001 the proportions had increased in these three groups to 41%, 85%, and 33%, respectively. Severe hair dye reactions among children have also recently been reported. Wider debate on the safety and composition of hair dyes is overdue, say the authors. Cultural and commercial pr...

Scientists find genes involved in the battle between Hessian flies and wheat

...aid. This is confirmed by the Hessian fly larvae's increased production of enzymes triggered by their antioxidant genes in order to detoxify wheat anti-insect poisons. "Hessian fly larvae are under stress when they encounter resistant wheat plants," Shukle said. "This stress includes starvation when they ca...

Navigable nanotransport

...ecules. What for? Many tumors have a significantly increased number of folic acid receptors on the surfaces of their cells. The folic acid on the capsules docks into these sites and is brought into the interior of the cell. Here, the contents of the capsule, such as an antitumor drug or contrast agent, can be ...

Human's ecological footprint in 2015 and Amazonia revealed

...roject future levels of stressors. They found that increased affluence exacerbates environmental impacts and, w...ests ?through enhanced drying of the forest floor, increased frequency of fires, and lowered productivity. The loss of healthy forests can degrade key ecosystem...

Need oxygen? Cells know how to spend and save

...xia for a few weeks and found that they too showed increased levels of COX4-2. In 1992, Semenza's team had discovered a protein which they called HIF-1 (for hypoxia-inducible factor 1) that cells make in response to hypoxia. HIF-1 turns on genes that help cells survive when oxygen is low, such as during a ...

New report: Explosive growth changes salmon industry

...the rapid growth in farmed salmon has dramatically increased total salmon supply, changed the kinds of salmon products that are available, altered the timing of production and raised market quality standards. These changes have raised economic, environmental and trade questions. For example, how does wild sal...

The sturdier sex? -- Study by Pittsburgh scientists finds female stem cells work better

...regeneration," she said. "The male cells exhibited increased differentiation after exposure to oxidative stress, which may lead to cell depletion and a proliferative advantage for female cells after cell transplantation." ...

Pitt study notes decline in male births in the US and Japan

...ile the number of African-American male births has increased modestly over time, the ratio of male to female births for African-Americans remains lower than that of whites. In addition, they noted that African-Americans have a higher fetal mortality rate overall and a higher proportion of male fetuses that die...

Power-boosting signal in muscle declines with age

...These metabolic shifts have been implicated in the increased prevalence of insulin resistance and type 2 diabet...e whether the declining mitochondrial function and increased intracellular fat content seen with aging could be traced back to deficiencies of AMPK. They compare...

Nanotextured implant materials: blending in, not fighting back

...problem, but concerns have surfaced recently about increased clotting. Instead of using chemistry to fight the body's response to such foreign materials, Thomas Webster, an associate professor of engineering, and Karen Haberstroh, an assistant professor of engineering, thought maybe they could use physical ...

Better assessment of transfusions could save blood

... The expected benefit of RBC transfusions is an increased oxygen level, which prevents cellular injury. Howe...tudies have not consistently demonstrated that the increased hemoglobin level with transfusion leads to improved tissue oxygenation. At this point in time, there...

Female chimps keep the bullies at bay

...of their anogenital swellings, which is related to increased levels of follicular estrogen. The period of maxi...tween males intensifies. As a result, there is an increased probability that high-ranking males, with desirable social and physical attributes, will mate with t...

New player in commitment to life as a fat cell

...amma activity, the researchers reported. Likewise, increased XOR levels hiked activity of the PPAR-gamma recept...rmal littermates. Genetically obese mice exhibited increased XOR activity and urate in the adipose tissue. Urate is a salt derived from uric acid. "Our result...

OHSU surgeon implants donated tissue allografts

...patients have recently benefited directly from the increased availability of fresh tissue for transplantation performed for complex joint cartilage restoration procedures. Patients diagnosed with osteochondral injury, or cartilage injury can ask their physicians about the use of allografts or other techniq...

'Marathon mice' elucidate little-known muscle type

... enriched in IIX fibers. These mice show a greatly increased capacity to sustain physical activity." Skeleta...ance than wild-type controls," indicative of their increased mitochondrial content, the researchers now report. Upon further examination, the researchers were su...

Study examines risk of soft tissue sarcomas in hereditary retinoblastoma survivors

...nother cancer, including soft tissue sarcomas. The increased risk of soft tissue sarcomas is attributed both to the mutation in the RB-1 gene that causes retinoblastoma and to the radiation treatment that most retinoblastoma patients received when treated decades ago. Radiation is used less frequently today be...

How appetite-stimulating brain cells work overtime during fasting

...ity and local thyroid production, in parallel with increased UCP2 activity. This fasting-induced, T3-mediat...s, an event that was critical for the brain cells' increased excitability and consequent rebound feeding by the animals following food deprivation. "Our resul...

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