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Tag: "alter" at biology news

Satellites shed light on global warming

...ollini, these waves have been recently observed to alter the colour of the sea, therefore they are believed to have some effect on phytoplankton ?the tiny chlorophyll-pigmented algal cells that populate the oceans in huge numbers and play a leading role in the global carbon cycle and the primary production...

Research to spotlight carbon monoxide benefits

... aim to make tuneable compounds which allow you to alter the rate at which carbon monoxide is released, which could be important in different bioapplications. "We are adopting a complementary approach to the design of these molecules using the natural interface between organic and inorganic chemistry." ...

2,000 influenza virus genomes now completed and publicly accessible

... rates when it replicates, and these mutations can alter the virus enough that vaccines against one strain may not protect against another strain. An even greater concern is the potential for an influenza pandemic caused by the emergence of a new, highly lethal virus strain that is easily transmitted f...

Scientists unravel clue in cortisol production

...ade is essential to producing medications that can alter its production. Scientists at the Georgia Institute of Technology have discovered an important step in cortisol production, finding that although the output of the hormone is continuous, the molecular production is cyclic in nature ?involving a rhyt...

Prehistoric mystery organism verified as giant fungus

...expected in any plant. Geological processes can alter the isotopic composition of fossils, but Boyce and his colleagues conducted tests to verify that the carbon isotopic composition of the specimens they analyzed stemmed from organic rather than geologic factors. As for why these bizarre organisms g...

Can engineered immune cells stop AIDS?

...ch a clever adversary, Wang wants to synthetically alter the HIV invaders and use their hollow shells as delivery vehicles to insert DNA that will counteract the infection. The "Cadillac" of this gene delivery system is an HIV-based "lentiviral vector," a type of retrovirus that uses the backbone o...

Birth rate, competition are major players in hominid extinctions

...ply could not compete reproductively and could not alter its choice of food. "We find that the early members of the genus Homo who succeeded were super ecological opportunists," says Jablonski. "They would eat vegetation and scavenge, kill small animals and forage." Cultural adaptations helped these...

How genetic malfunction causes a form of retardation

... perturb cell genesis, and then this might in turn alter many later aspects of neural development, ultimately resulting in impaired circuitry and cognitive dysfunction.? ...

Growth hormone is not the anti-aging bullet for healthy adults

...hy elderly suggests that although GH may minimally alter body composition, it does not improve other clinically relevant outcomes such as bone density, cholesterol levels, stamina, and longevity in this population. "And it's associated with high rates of adverse events. "So, on the basis of available...

Prenatal cocaine's lasting cellular effects

...period. He found that cocaine exposure did not alter the total amount of D1 receptor produced in the br...inue to mature." Because cocaine exposure seems to alter the distribution of the D1 receptor, Stanwood suggests that researchers might find a way to "steer" ...

Genes and biomarkers that allow doctors to choose the right therapy for the right patient

... if a patient is not responding to the therapy and alter their treatment strategy accordingly." The researchers screened lung and brain tumors to determine which peptides ?or protein fragments ?were active in the tissue environment surrounding the tumors. This phage displayed library ?called so after ...

Exploring the molecular origin of blood clot flexibility

...e idea would be to use such compounds in people to alter the properties of the clot, so it can be less obstructive and more easily dissolved. In the future, the researchers will examine other processes at the molecular and fiber levels that may be responsible for the mechanical properties of clots to ev...

New molecular pathway could reveal how cells stick together

...ment travels to adjacent cells and signals them to alter their adhesive state. Page-McCaw published these findings earlier this year and was recently awarded an individual investigator research grant to extend her work from cells in a Petri dish to an organism. The grant, from the National Institute of Gen...

Wheat can fatally starve insect predators

...s from their saliva into the plant that completely alter the wheat's physiology and growth. ...

Cold sore virus might play role in Alzheimer's disease

... less active. The work suggests that ApoE-4 may alter the balance between the HSV life cycle forms. It's possible that the ApoE gene works as a sort of bodyguard that tries to keep cells safe from herpes, perhaps by facilitating latency. Somehow the ApoE-2 version is extremely effective at keeping the v...

Tracking sperm whales and jumbo squid

... Unlike squid, however, the sperm whales did not alter their diving pattern at night. Instead, they continued to spend about three-fourths of their time at depths of 600 to 1,300 feet, according to nocturnal tagging data. "These data show that sperm whales don’t change their feeding behavior, day or n...

Veterinary scientists explore poultry virus as cancer killer

...at cancer. However, Subbiah’s work is the first to alter Newcastle disease virus through a reverse genetic system to target prostate cancer specifically. Reverse genetics is the process of generating a recombinant virus from cloned complimentary DNA (cDNA) copy of a viral genome, explains Subbiah. Thro...

Scripps research study shows humans and plants share common regulatory pathway

...degradation. In contrast, turning off SGT1 did not alter levels of Nod1." In an earlier study, Ulevitch’s laboratory reported that Nod1 also interacted with the COP9 complex, a multiprotein complex that is known to play a role in a number of development pathways in plants and that has a mammalian count...

Researchers learn what sparks plant growth

...sted in identifying the mechanisms by which plants alter their shape and size in response to changes in the...nts because they are rooted in the ground and must alter their shape and size in response to their local environment. Thus, it’s a question of survival," add...

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

... feeding sites on resistant plants, the larvae can alter the physiology and change the level of certain proteins in susceptible plants. This forces the plant to feed the larvae. On resistant plants, Hessian fly larvae encounter defense mechanisms that include poisonous oxygen compounds, Shukle said. The...

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