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Tag: "attempt" at biology news

U of M study examines kidney stone prevention in astronauts

... grow. While astronauts have exercised in space to attempt to combat bone loss, the lack of gravity makes it difficult to achieve enough resistance to maintain their pre-flight fitness levels. "This becomes a real health concern, as the time astronauts spend in space and living in the space station is exten...

Iron critical to ocean productivity, carbon uptake

...s in which iron is introduced into the ocean in an attempt to boost productivity. Those studies found that introducing iron into small portions of the Pacific did indeed trigger phytoplankton growth, but it wasn't as robust or as sustained as models predicted. "It wasn't the silver bullet that scientists or...

Researches discover gene critical for protection against septic-shock-induced death

...y an increased inflammatory response in the body's attempt to combat an infection from microorganisms such as bacteria, fungi or viruses. A weak host inflammatory response can lead to greater infection, whereas an excessive inflammatory response may lead to tissue damage, myocardial injury, acute respiratory...

Marrow-derived stem cells deliver new cytokine to kill brain tumor cells, offer protection

...otent," Yu said. "Most anti-tumor gene strategies attempt to deliver genes directly to tumor cells, but gliomas are especially challenging because of their highly invasive and migratory characteristics," said Keith L. Black, M.D., director of the Maxine Dunitz Neurosurgical Institute, director of Cedars-Sin...

Inflammation and drugs to control this activity studied in a variety of tumors sites

...ho did and who did not develop breast cancer in an attempt to identify early predictors of risk. Reduction in the Risk of Human Breast Cancer by COX-2 Inhibitors: Abstract No. 2352 Results of a five-year study have shown for the first time a significant reduction in risk associated with selective COX-2 i...

Engineered heart tissue offers insights into irregular heartbeats, defibrillator failure

... a short period, we applied trains of pulses in an attempt to terminate this wave." The pulses successfully...s with implanted defibrillators, the devices often attempt to terminate ventricular tachycardia by delivering electrical pulses to a single site at a rate slig...

Not just the birds

...e North Pacific fur trade, and later removed in an attempt to return the islands to their more natural states. Most of the islands are now fox-free, but the effects of their presence are still visible; birds have been slow to return to the islands to nest. The region is its own experimental test site. The...

Scientists force viruses to evolve as better delivery vehicles for gene therapy

...to quickly tackle and neutralize it, thwarting any attempt at gene therapy. UC Berkeley's David Schaffer, associate professor of chemical engineering and a member of the Helen Wills Neuroscience Institute, with colleagues Narendra Maheshri, James T. Koerber and Brian Kaspar, decided to speed up the process ...

AIDS drug from sunflowers

...r with the Jülich Research Centre they now want to attempt to manufacture the substance on a large scale. The...refore currently ?,000 per milligram. 'We want to attempt to cultivate sunflower cells or other plant cells in a nutrient solution together with the mould scl...

MBL leads effort to update E. coli genome

...t importance to the scientific community. In an attempt to consolidate the efforts of scientists working independently on the genome of the E.coli K-12 strain, an international team of biologists, led by MBL (Marine Biological Laboratory) scientists Monica Riley and Margrethe "Gretta" Serres, has publishe...

Scientists discover a genetic switch that links animal growth and cancer

.... When the gene for PTEN is defective, the animals attempt to grow and become mature even when they have no food. "The attempt of these animals to grow when they should not is not only analogous to the inappropriate growth and ...

Researchers test new way to quit smoking

...ered nicotine patches or gum two weeks before they attempt to quit; the other half will begin using the patches or gum on the day that they quit. "Using nicotine gum or patches while still smoking is very safe," said Dr Bullen. "We will track how study participants respond in the days immediately after they...

A new focus for the mechanism of nerve growth

...of Nature Cell Biology. As nerve cells develop or attempt to recover after damage, they extend growth cones, highly flexible extensions that act as environmental sensors. Growth cones use the information they gather to direct advance of the nerve cells and it has long been known that such advance depends on...

Diverse tropical forests defy metabolic ecology models

...t are currently working on mechanistic models that attempt to better capture these complexities, and thereby attain a better understanding of what factors drive tropical forest structure and dynamics. Achieving such an understanding is particularly critical today, as tropical forests are threatened by global...

Study finds drug may cut down involuntary movements

...s many as one-quarter of patients with the disease attempt suicide, and many suffer from progressive cognitive decline. Unlike Alzheimer's disease, where patients usually lose their memory and insight into their disease at some point, most Huntington's patients understand exactly what is happening to them ...

Hooked on fishing, and we're heading for the bottom, says scientist

...s, the Sea Around Us is the world's most ambitious attempt to document and assess the fate of global fisheries. Using specialized software and fisheries data from around the world, the project maps global marine fisheries activity since 1950. This reveals local, regional and global trends in past and present...

Neurons find their place in the developing nervous system with the help of a sticky molecule

...ating that loss of MDGA1 protein had stymied their attempt to travel the full distance to layer 2/3 and supporting the original hypothesis. The goal now is to determine how MDGA1 controls neuronal migration and what the long-term consequences are of its loss. Impaired function of neuronal adhesion molecul...

Setting the standard for computer models of life

...mistake in the way that it's encoded. MIRIAM is an attempt to address these issues." MIRIAM has two parts: (1) a set of checks that match a model to its description ('reference correspondence', often a publication in a scientific journal), and (2) a set of 'annotation schemes'. The first of these documents ...

The bioweapon is in the post

... make sequences 20,000 or more base pairs long, an attempt to order all the genes necessary to launch a smallpox attack would probably arouse suspicion. "That would stand out from a technological point ofview," suggests Drew Endy, a bioengineer at the Massachusetts Institute of Technology. A more realistic ...

Some good news for the world's poor

... Evenson from Yale University, was the first major attempt to assess the economic impact of improved crop varieties, not just rice but also other important food staples such as wheat, maize, barley, cassava, and potato. Dr. Hans Gregersen, the head of a panel that reviewed the research, described the study b...

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