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Tag: "changing" at biology news

Amazon source of 5-year-old river breath

...le isotopic signature of pasture grasses. "You're changing the land use, changing vegetation and other conditions. In terms of what's being respired, the system is responding fairly ...

Researchers make headway in mystery of migraines

...the sodium pump has been shown to cause disease by changing the properties of this biochemical process, rather than completely turning it off," notes Dr. Blostein. This new understanding of how genetic mutations cause migraines takes us one step closer to the development of improved treatments, providing hope...

New method shows it is possible to grow bone for grafts within a patient's body

...d of tissue engineering. "It has the potential for changing the way that tissue engineering is done in the future." The current approach currently used by orthopedic surgeons to repair serious bone breaks is to remove small pieces of bone from a patient's rib or hip and fuse them to the broken bone. They use...

Motor transport in bio-nano systems

...ms which are able to respond to and 'survive' in a changing environment. ### Original work: Stefan Klumpp, Theo M. Nieuwenhuizen, and Reinhard Lipowsky Self-organized density patterns of molecular motors in arrays of cytoskeletal filaments Biophysical Journal 88, 3118-3132 (2005) Stefan Klumpp and Reinhar...

Scripps research scientists identify infertility molecule

...lating parts of LPA signaling may thus be a way of changing prostaglandin levels. This is a significant finding because low implantation rates are one of the major issues facing women who use assisted reproductive technologies, and nobody has ever considered LPA signaling to be involved in implantation. If t...

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

... hormone. Both mutations activate the receptor by changing a single amino acid, arginine, located on the gene...from the kidneys. The group set out to prove that changing the amino acid at position 137, from arginine to either cysteine or leucine, caused the AVPR2 to pro...

New tool reveals secrets of migrating cells

...imaging to investigate the signals responsible for changing these meanderers into purposeful beeliners that immediately leave the cortex for the interior medulla of the thymus. "We're now at the point with this technology that we can begin to look at the movement of signaling molecules within the cells," she...

'Jumping genes' contribute to the uniqueness of individual brains

... from one place in the genome to another, randomly changing the genetic information in single brain cells. If enough of these jumps occur, they could allow individual brains to develop in distinctly different ways. "This mobility adds an element of variety and flexibility to neurons in a real Darwinian sense...

Gambling monkeys give insight into neural machinery of risk

...tt. "But when we made the task more interesting by changing the color of the lights on each trial, the monkeys didn't care anything about it." In fact, when the researchers made the average payoff for the risky target less than for the safe target, "we found that they still preferred the risky target," said ...

Temperature regulates circadian clock in zebrafish

...blooded animals) that can be manipulated simply by changing the water temperature. Temperature variations of as little as 2 oC (35.6 oF) can reset the zebrafish clock, Lahiri et al. show, and precise shifts in temperature trigger significant changes in the expression of specific clock genes. More explicitly,...

The synapse is a shotgun

...lionth of a meter, has already proven its worth in changing scientists' views of the synaptic landscape. Using the map as a guide, the research team, led by Howard Hughes Medical Institute investigator Terrence Sejnowski, has developed a biologically accurate computer simulation of synaptic function. The sim...

MERIS monitoring tracks planetary photosynthesis levels

...mospheric particles, the presence of soils and the changing geometry of illumination and observation." The validation of MGVI is in fact an ongoing activity, along with that for a family of related FAPAR algorithms developed by JRC for other satellite sensors, including NASA's MODIS and SeaWiFS, intended t...

New markers of climate change

...s of these two isotopes can be matched against the changing environments to which the plants have been exposed. If successful, these plants could be used as bioindicators of climate change throughout the tropics. Monica will be presenting her work at the Society for Experimental Biology Annual Main Meeting i...

Breakthrough in micro-device fabrication combines biology and synthetic chemistry

...ived structures can be chemically modified without changing the starting shapes or fine features, we have opened the door for new research and development in the processing and application of many devices that would otherwise be very difficult or expensive to produce." ...

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

...t normally allow the heart to adapt in the face of changing conditions are lost, rendering the heart unable to pump enough blood to meet the needs of the body's other organs," said cardiologist and geneticist Howard Rockman, M.D., of Duke. "If we could prevent this loss of heart receptors, we might improve he...

Carnegie Mellon cyLab researchers work to develop new red tide monitoring

... scientists. "Spatiotemporal data mining extracts changing spatial patterns from continuous data flow. It is a rapidly growing field, which includes inverse physics, machine learning and human-computer interaction," Cai said. ...

UCSD discovery may provide novel method to generate medically useful proteins

...uzzle piece. However, the bacteria are constantly changing the proteins on their surface. To keep up with the unpredictable changes in the prey protein, the phage must generate many different predator proteins for at least one to have an acceptable fit. In their paper, the researchers describe how by al...

Sensor web simulation investigates technique to improve prediction of pollution across the globe

...le complementary instruments to respond to rapidly changing environmental conditions. "These simulations fall into the category of 'proof of concept,' to assess the feasibility of what is also planned for the next generation observing systems to enable real, full-fledged sensor web measurements," explained T...

Identical twins may have more differences than meet the eye

...s that alters gene expression and behavior without changing a gene's DNA sequence is called methylation. Plass, who is also part of the human cancer genetics program at Ohio State, studies methylation in both normal and cancer cells in hopes of better understanding how the process affects the beginning and pr...

Scientists find evidence of catastrophic sand avalanches, sea level changes in Gulf of Mexico

...s that alters gene expression and behavior without changing a gene's DNA sequence is called methylation. Plass, who is also part of the human cancer genetics program at Ohio State, studies methylation in both normal and cancer cells in hopes of better understanding how the process affects the beginning and pr...

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