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Tag: "supply" at biology news

Cigarette smoking impedes tendon-to-bone healing

... to learn exactly what the mechanism is, but blood supply is a potential culprit," she says. "Nicotine and c...ls. That process is assisted by increases in blood supply that may not happen as efficiently in smokers." ...

Stem cell activity deciphered in the aging brain

... been that the brain drain was due to a decreasing supply of neural stem cells in the aging hippocampus, said lead study investigator Bharathi Hattiangady, Ph.D., research associate in neurosurgery. Neural stem cells are immature cells that have the ability to give rise to all types of nerve cells in the br...

Genomic comparison of lactic acid bacteria published

...orld would be without the contribution to our food supply of such benign microbial players as lactic acid-producing bacteria. Researchers from the U.S. Department of Energy Joint Genome Institute (DOE JGI) and the University of California, Davis, and their colleagues have characterized the genome sequences...

First-time analysis reveals millions of Europeans left at risk from influenza

...making significant investments to increase vaccine supply using pioneering cell-culture manufacturing techno...of the target population of 35.4% based on current supply constraints As a consequence up to 144.4 million people who are considered "at risk" may not be ...

Emergency contraception fails to halt abortions

... in different countries showed that giving women a supply of emergency contraception to keep at home increased its use by twofold or threefold, but had no measurable effect on rates of pregnancy or abortion. Most women who did not use their supply, said they did not realise they had put themselves at ri...

Special chip provides better picture of salmon health

...raits for the production of salmon. These are; the supply of contaminant-free highly unsaturated oils, including omega-3s, for the salmon diet, their long and complex lifecycle, infectious disease, and protein growth efficiency. Professor Alan Teale, lead researcher at the Institute of Aquaculture at th...

Does natural selection drive the evolution of cancer?

...timulate the host to generate new blood vessels to supply the tumor with nutrients. The neighboring cells that aren't investing resources in producing the signals take advantage of the nutrients nonetheless. Mutualism describes a situation in which two organisms interact in a mutually beneficial way. Tum...

The first tree genome is published: Poplar holds promise as renewable bioenergy resource

...ns of the southeastern U.S. could provide a steady supply of tree biomass rich in cellulose that can be transformed by specialized biorefineries into fuels like ethanol. Other regions of the country might specialize in different "energy crops" suited to their particular climate and soil conditions, includi...

Chemical tests of cell growth enter third dimension

...vantage to using more wells: The eight empty wells supply nutrients to the cells in the middle well, so tests can run for up to two weeks without researchers having to replenish the growth medium. "If you replenish the medium, you could essentially grow cells indefinitely," Yang said. The second new techn...

For Pacific white shrimp, gender matters when competing for food

...get. Currently, over 50% of the world’s shrimp supply comes from farming. As the industry tries to meet the growing demand for shrimp and shrimp-based products, identifying shrimp that grow more efficiently will be an important tool to maximizing production. ...

'Trojan Horse' agent halts bone metastasis in mice

...ing the ability of tumors to form blood vessels to supply the nutrients they need to grow. Animal studies previously conducted by the researchers have shown that the protein can selectively destroy blood vessels feeding human solid tumors. In this study, investigators implanted human prostate cancer cell...

Giant insects might reign if only there was more oxygen in the air

...ser. The study, "No giants today: tracheal oxygen supply to the legs limits beetle size,'' will be presente...gh it. When tracheal size is limited, so is oxygen supply and so is growth, Kaiser explained. Using the disproportional increases they observed among the b...

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

...espiratory disorders which cause inadequate oxygen supply to the brain, Folkow explained. Folkow will present a second study on hypoxia, involving diving birds, at the conference. The study "Neuronal hypoxic tolerance in diving birds and mammals," examines how diving birds and seals preserve brain cell f...

From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea

...their potentially vital role in cycling the global supply of nitrogen. All living things need nitrogen to make proteins, DNA and other biomolecules. Nearly 80 percent of the atmosphere consists of nitrogen gas, which, unlike oxygen, cannot be absorbed by most organisms. Getting usable nitrogen turns out to ...

Rescuing injured hearts by enhancing regeneration

...iomyocytes," he says. "Cardiomyocytes need a blood supply and oxygen to survive. FGF1 did not have a great effect on cell proliferation, but we found it was providing a new blood supply. If you just inhibit p38 MAP kinase, you don't get blood vessels." Two important steps are needed to turn these finding...

First Quantum Grant to fund stem cell repair of damage from stroke

... new brain tissue is planned to have its own blood supply to allow it to be placed into the damaged brains of stroke patients where it will provide a source of neural and vascular cells that will continue to develop and differentiate, repairing the injured tissue in the process. "This project represents ...

Rearing an army to save wheat

...s in the number of parasitic wasps, while the food supply is probably not important in these mass-rearing ca...al of the research is to find ways to increase the supply of parasitoids from a controlled system to Montana wheat growers. "Right now, the number of peopl...

The power of one: A simpler, cheaper method for cell fusion

...y important," he said. "For example, if you had to supply cells from your own body or from another live organism, you would want to take as few as possible." Lu's device consists of fluid-filled channels inside a tiny microchip. Prior to fusion, cells are engineered to bond to one another by using a mino...

An AIDS-related virus tricks cells to become tumors, new Penn study finds

...k is to mark a key protein that controls the blood supply in a tumor mass. Once marked, this protein called ...sible for inducing growth of more blood vessels to supply the tumor with oxygen. However, in a KSHV-infected cell, p53 and VHL themselves would be targeted fo...

New way of tracking muscle damage from radiation

...imaging (DEMRI) to study what happens to the blood supply at a microscopic level. "These techniques are ...lood vessel, helps us understand whether the blood supply is in poor or good condition," Krasin said. "Changes in T2 measurements may indicate an increase in ...

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