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Tag: "states" at biology news

FDA sees nanotech challenges in every product category it regulates

...sor Andrew Maynard. “The Task Force report clearly states that size matters in making risk management decisions. Because the chemical, physical and biological properties of nanoscale materials are often different from their larger counterparts, they potentially lead to different safety issues. The report’s ...

Research finds that circadian rhythms dominate all life functions

...f day and night. Oscillation can become chaotic in states of consistent lighting or lack of lighting, but it never stops. Comparing the complex system in which the genes function to an AC power grid, Ptitsyn made the discovery by plotting the expression of 20,000 genes on a scale of frequency, or intensit...

Prey not hard-wired to fear predators

...re to be down-listed from federal protection. The states of Wyoming and Idaho have already proposed plans that would allow for as much as 85 percent of these once-protected wolves to be killed. So even as the goal of re-instilling fear of predators in prey species has been successful, the question remains...

Gene therapy study shows safety and statistically significant improvement in Parkinson's disease

...significant improvement in both the “on” and “off” states of their illness (the time periods in which they achieve or do not realize benefit from drug therapy) beginning at three months following surgery and continuing through the end of the study. These improvements occurred predominantly on the side of th...

Smoking rate has plummeted in New York City

...n record (17.5%), and lower than all but five U.S. states (California, Washington, Idaho, Utah and Connecticut). Over the past year, smoking decreased among men (from 22.5% to 19.9%) and among Hispanics (from 20.2% to 17.1%). These large declines followed a year-long ad campaign aimed at prompting more smok...

pHLIP, a novel technology to locate and treat tumors

...? In addition to targeting tumors, other disease states that produce inflammation and cause tissue to be acidic are a target for pHLIP. “Acidosis is a physiological marker of many diseases ?and pHLIP feels acidity,?said Reshetnyak. “Therefore, pHLIP could also be used for monitoring of disease developmen...

Man's best friend lends insight into human evolution

...ry good at drawing inferences about others' mental states in cooperative situations ?such as when an experim...nds. While chimps may fail to infer others' mental states when cooperating, domestic dogs do quite well at such tasks. If you point to hidden food, dogs often...

NIAID expands capability for influenza research and surveillance

...onitor animal influenza internationally and in the states of Alaska, Washington and California. They also will maintain a high-throughput laboratory network capable of providing real-time information about circulating influenza virus strains and antiviral drug resistance—information that will be most critic...

Scientists see DNA get 'sunburned' for the first time

...sor of chemistry at Ohio State. Some exited energy states last a long time, and others a short time. The ene...hat it would sustain damage. So long-lived excited states were thought to be more dangerous than short-lived ones. But this study shows that the most common U...

Out-of-body experiences may be caused by arousal system disturbances in brain

... brain's arousal system, which regulates different states of consciousness including REM sleep and wakefulne...ate and wakefulness, the brain switch blends these states into one another. To survey out-of-body experiences that occurred during sleep transition, patie...

Remote sheep population resists genetic drift

...the widely accepted theory of genetic drift, which states the genetic diversity of an inbred population will decrease over time. "What is amazing is that models of genetic drift predict the genetic diversity of these animals should have been lost over time, but we've found that it has been maintained," s...

Hotspots of mercury contamination identified in eastern North America

...sponding to mercury contamination exist in all the states and provinces included in the study, and loons are adversely affected by mercury levels they experience. The hotspots have implications for "cap and trade" approaches being implemented for regulation of emissions from coal-fired electric power stat...

New study sheds light on 'dark states' in DNA

...escence techniques used to study other high-energy states created in DNA by UV light. The study suggests t... which are much longer lived than previously known states created by UV light, may be linked to DNA damage. The existence of this dark energy state -- dubbe...

Why doesn't the immune system attack the small intestine?

... become 'tolerized' to ?normal intestinal tissue," states Turley, who is also an assistant professor of pathology at Harvard Medical School. "But it has been unclear how dendritic cells, which are extremely sensitive to microbial agents such as bacteria, teach T cells to resist attacking healthy intestinal ...

Researchers from the UGR use a bacterium to obtain biopreservatives from food

...al molecules with new characteristics. "Our work," states Marina Sánchez, "has determined which AS-48 amino acids are essential for membranestability and biological activity, and it has also helped us understand how this molecule permeabilizes bacterial membranes." Competition for nutrients Over the...

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

...o assist clinical drug development by finding gene states that predict a patient’s response to a specific dr...study, we were able to discover new candidate gene states that may be useful in determining a patient’s sensitivity or resistance to Tykerb, and the results h...

New cigarette designs don't offer lower predicted cancer risks

...d been lowered to any meaningful degree. The paper states that this makes promises of reduced harm based on such removal "speculative and unverified." "Despite all the years of research, we can only account for a small percentage of the carcinogenicity of smoking conventional cigarettes," said Pankow, Ph...

Freeze! Scientists film proteins at work by freezing them at different states

...aboratory to freeze the protein in three different states while the reaction took place. In order to make su...hnique provided them with strong evidence that the states were the appropriate ones by showing them the chemical bonds in each stage of the reaction. Once the...

The origin of the brain lies in a worm

...t put forward by zoologist Anton Dohrn in 1875. It states that vertebrate and annelid CNS are of common descent and vertebrates have turned themselves upside down throughout the course of evolution. "This explains perfectly why we find the same centralised CNS on the backside of vertebrates and the bellys...

Health Canada approves cold and flu medicine

...tment claim for COLD-fX® approved by Health Canada states that the product “helps reduce the frequency, severity and duration of cold and flu symptoms by boosting the immune system.? Comprehensive therapeutic claims require support by the highest level of scientific evidence: randomized, double-blind, place...

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