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Tag: "altering" at biology news

Inheritance outside DNA

...ending on its parental origin. It works largely by altering the methylation patterns"the addition or subtracti...rent from whom that copy was inherited but without altering the DNA. Abnormal methylation patterns in cancerous cells were discovered more than 20 years ago...

Air travel and flu: Post-9/11 restrictions delayed start of season

...rove that travel restriction would be effective in altering the course of a flu pandemic, but it does provide evidence that air travel plays a significant role in the annual spread of flu in the United States. The findings will help plan for the next flu pandemic. ...

MIT designs portable 'lab on a chip'

...ontrol. The key to boosting energy efficiency is altering the electric field in the channel, Bazant said. Instead of placing electrodes at each end of the channel, as in capillary electro-osmosis, the voltage can be lowered substantially with alternating current (AC) applied at closely spaced microelectrode...

Bitter taste identifies poisons in foods

...ake by the thyroid, increasing risk for goiter and altering levels of thyroid hormones. The ability to detect and avoid naturally-occurring glucosinolates would confer a selective advantage to the over 1 billion people who presently have low iodine status and are at risk for thyroid insufficiency. In the ...

ABCB6 is key to production of heme in hemoglobin

...tionship can cause serious problems in the cell by altering levels of heme or porphyrins," Schuetz said. Armed with this new information, researchers will be better able to study certain diseases at the molecular level and learn more about their causes and perhaps how to prevent or treat them. One such group...

Light-sensitive photoswitches could restore sight to those with macular degeneration

... Physical Bioscience Division of LBNL. It involves altering an ion channel commonly found in nerve cells so that the channel turns the cell on when zapped by green light and turns the cell off when hit by ultraviolet light. The researchers demonstrated in 2004 that they could turn cultured nerve cells on an...

No-mow grass may be coming to your yard soon

...s of genetic engineering, more precise methods for altering industrial plant strains have come into play. But access to a pathway used by plant hormones to dictate size promises broader influence over the many genes involved in the process of growth. Levers that could be used to alter a hormone pathway to i...

Report warns about carbon dioxide threats to marine life

... dioxide from fossil fuel burning are dramatically altering ocean chemistry and threatening marine organisms, including corals, that secrete skeletal structures and support oceanic biodiversity. A landmark report released today summarizes the known effects of increased atmospheric carbon dioxide on these orga...

Corals switch skeleton material as seawater changes

...tors say this is the first known case of an animal altering the composition of its skeleton in response to change in its physical environment. The aquatic animal's sensitivity to such changes poses questions about its evolutionary history, as well as the future of the ecologically important coral reefs that i...

Pollen proves beneficial for northern lakes

...could affect the productivity of northern lakes by altering the magnitude and timing of delivery of this important source of forest-derived nutrients, said Graham. ...

Loosen up, DNA: Leukemia gene changes genetic packaging

... the JAK/STAT pathway may offer a new strategy for altering chromatin structure, much like HDAC inhibitors do. "We hope that others will take what we have learned from fruit flies and apply the findings to people," said Li. "If this phenomenon occurs in people as well as flies, which is likely, it could for...

Researcher gives hard thoughts on soft inheritance

...change stress the importance of the environment in altering inheritance. "When most biologists hear the name Lamarck or the term soft inheritance, the reaction is, 'Oh my God, here we go again'," Richards says. "But from a molecular biology point of view there is a mechanism to do soft inheritance, an...

Key stress protein linked to toxicities responsible for Parkinson's, Alzheimer's

...tacks PDI via a chemical S-nitroyslation reaction, altering PDI's structure and blocking its normal neuroprotective function, which ultimately leads to nerve cell injury and even death. These new results also show that this altered form of PDI is present in elevated amounts in patients with Alzheimer's and P...

Novel connection found between biological clock and cancer

...ck properties, shortening the circadian period and altering temperature compensation. For this study, the researchers cloned the gene based on its position in the genome, and found it was an important cell cycle regulator. When they eliminated the gene from the genome, the clock was normal, indicating that th...

VCU Massey Cancer Center researchers identify a new class of anti-cancer drugs based on platinum

...itical role in cellular resistance to cisplatin by altering its ability to effectively kill tumor cells. By understanding the features of cisplatin that contribute to resistance, Farrell and his team designed the new compound to circumvent these problems. ...

Most human-chimp differences due to gene regulation ?not genes

...basic cellular processes. The authors suggest that altering the regulation of these fundamental and ancient ge...es with very little effort, according to Gilad. By altering transcription factors, the entire regulatory network can change with very few mutations, increasing ...

Yale researchers find environmental toxins disruptive to hearing in mammals

... hear. He found that TBT, salicylate, or otherwise altering the extracellular chloride levels in the cochleas, interfered with the balance of chloride in the outer hair cells and caused profound changes in sound amplification in the inner ear. In his previous study using TBT on isolated cells only, Santos-Sa...

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...h as shipping, and are unwelcome invaders that are altering local ecosystems. These include the European green crab, a small shore crab that is an efficient colonizer and predator. ...

Sun protection for plants

... able to turn unwanted absorbed light into heat by altering the structure of one of the proteins in these membranes. This unique nanoscale safety valve prevents plant damage by harmlessly dissipating the lethal excess radiation. This photoprotective process was found to be aided by a special carotenoid molecu...

Researchers develop portable 'vein finder' for faster, more accurate injections

...tic and sound waves interact with a moving object, altering wavelengths and frequency. For example, a police radar gun sends microwave signals to a moving car, and when signals bounce back, the change in their frequency provides a measurement used to determine the vehicle's speed. Doppler ultrasound is simi...

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