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Tag: "adjust" at biology news

Need oxygen? Cells know how to spend and save

...ower it, so when oxygen is scarce, cells appear to adjust by replacing one protein with an energy-efficient substitute that "is specialized to keep the motor running smoothly even as it begins to run out of gas," says Gregg Semenza, M.D., Ph.D., a professor of pediatrics and director of the vascular biology...

New technologies coming too fast for Indian farmers

...ound several factors affecting farmers' ability to adjust to new developments by practical methods. Among them are the speed of change, the overwhelming number of choices in the seed market and the desire for novelty ?all of which lead to lack of proper seed testing by farmers. "There is a rapidity of cha...

Researchers discover gene crucial for nerve cell insulation

...r hope is to exploit this knowledge so that we can adjust the levels of myelin genes such as PMP22 and MPZ, and thereby create an effective treatment for myelin diseases." Understanding the process by which nerve cells are myelinated also could be applied to other disorders as well, Dr. Svaren said. Diab...

Gene that makes people 'early to bed and early to rise' demystified

...r daily, rhythm might lead to therapies that could adjust the body's clock in those suffering from conditions including jet lag or shift work sleep disorder, according to the researchers. "This study highlights the power of natural human mutations to uncover things [about the circadian clock] that we migh...

Are journal rankings distorting science?

...tation surveillance period, applying weightings to adjust for the average number of references across journals, or scoring journals on only their most important papers. It’s easy to criticise bibliometrics, but we should attempt to refine them and debate in parallel how we can track academic careers and ...

Ring-around-the-cell

...side and outside of the cell, enabling the cell to adjust its activity according to the condition of the bone underneath." ...

NYU scientists identify how development of different species uses same genes with distinct features

... among these genes, but some events are changed to adjust to the developmental constraints. Flies rely on a gene called bicoid to pattern their early embryo. The bicoid gene product, a messenger RNA (mRNA), is localized at the anterior of the embryo where it is required both to promote anterior developme...

A potential biological cause for sudden infant death syndrome

...are most vulnerable to SIDS. At birth, babies must adjust from being totally dependent on their mother to breathing on their own and maintaining their own blood pressure. If the brainstem serotonin system is defective or still immature, this transition to total independence in the control of vital function...

Chronic jet-lag conditions hasten death in aged mice

...t different aspects of the physiological clock can adjust to schedule changes at different rates. The researchers speculate that the internal lack of synchrony among different physiological oscillations may have serious health consequences that are exacerbated in aged animals. ...

Cities change the songs of birds

...ecific attributes of city birds that allow them to adjust to noisy urban environments. The findings, reporte...elatively wide frequency range, and the ability to adjust songs by leaving out lower frequencies, seems critical to the bird’s ability to thrive despite urban...

Hair-growth drug artificially lowers PSA levels in prostate cancer screening, study finds

...PSA level is lowered artificially. Doctors need to adjust the PSA interpretation by multiplying it times two for these men." Finasteride was initially developed in the 1990s for the treatment of benign prostatic hyperplasia (BPH), better known as enlarged-prostate disease, and was first approved by the U....

Cocaine high caused by interference in neuronal receiving stations

...pulses in the receiving cell. These receptors also adjust themselves in complex ways to alter the sensitivity of the receiving neuron to stimulation. Researchers had long known that cocaine affects both dopamine and glutamate receptors on neurons, but the molecular details of those effects were unknown. I...

Older men treated for early prostate cancer live longer than those who are not

...y, because observational data can never completely adjust for potential selection bias and confounding, our results must be validated by rigorous randomized controlled trials of elderly men with localized prostate cancer before the findings can be used to influence treatment decisions." ...

Dragonfly's metabolic disease provides clues about human obesity

...they found parasites. Healthy dragonflies can adjust their muscle performance according to how much fat they have available in their bodies, but the dragonflies infected with parasites weren't making that adjustment, Marden observed. He and Schilder began looking for an explanation and ultimately foun...

Climate change has surprising effect on endangered naked carp

...hers. Long-term lake-water-acclimated fish also adjust by actively feeding and have much larger fat stores, the researchers found. In contrast, migrating river fish are anorexic, relying on protein breakdown and higher oxygen consumption to generate energy. "The MO2 [oxygen consumption] data indicate...

Plants' role in global warming re-examined

...hey have not taken into account plants' ability to adjust to changing conditions, according to researchers f...igher temperatures and their levels of respiration adjust downward." While some previous climate-carbon simulations have included differentiation among veget...

Report highlights change in Canada's forests

...untry. In the past year, the industry has had to adjust to changes such as the high Canadian dollar, rising energy costs and increased competition. The report also focuses on important advances in forest management in 2005?006 as governments sought to balance environmental, economic and social factors aff...

Breastfeeding boosts mental health

...occurs in the first year of life. "Even when we adjust the results to take into account other factors such as the parents' socio-economic situation, their education, their happiness and family functioning, we see that children that were breastfed for at least six months are at lower risk of mental health...

Mayo Clinic Cancer Center: Harnessing the measles virus to attack cancer

...ion in the tumor with a blood test, allowing us to adjust the dosage to increase the likelihood of therapeutic benefit." Eligible candidates for the therapy will have glioblastoma multiforme that has progressed after surgery and radiation therapy, and be candidates for surgery. They also must be immune ...

Ozone recovering, but unlikely to stabilize at pre-1980 levels, says study

...ent of plants' response to light, enabling them to adjust growth to reach light or strengthen stems. Exploiting its potent growth-promoting properties could increase crop yields or enable growers to make plants more resistant to drought, pathogens, and cold weather. Unfortunately, synthesizing brassinoste...

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