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Tag: "systems" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...d sleep doesnt come easily to kids whose signaling systems may not be properly calibrated, OConnor said. However, more research is needed to monitor this signaling pathway more closely, watching for biological hints as to why sleep and behavioral disturbances so often crop up together. In the meantime, pr...

Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily

...lls, so it will be exciting to look at other viral systems with our experimental method,” she said. Many different viruses could enter cells by efficiently lowering the energy required to penetrate a cell’s outer membrane, according to Tristram-Nagle and her collaborator, John Nagle, professor of physics an...

Identified main genetic variants involved in response to HIV

...ciated to genes encoding HLA-B and HLA-C molecular systems would explain up to 15% of viral load variation among patients, whereas the third genetic variation would explain 5.8% of these differences. Further study of other genetic regions involved in this process is needed. Nevertheless, HLA-B variation pres...

Innovative smallpox vaccine research study to be conducted at Case Medical Center

...accine to all individuals, even those whose immune systems are suppressed,” says Dr. Salata. “Our hope is that the new vaccine will be a safer alternative to the current vaccine.” UHCMC and the School of Medicine will act as a subunit of St. Louis University’s Center for Vaccine Development, which is one ...

Discovery in orange cauliflower may lead to more nutritious crops

... developing countries, leads to compromised immune systems and is the leading cause of blindness in children. "A large percentage of the human population depends on staple crops for nutrition," said Li, an adjunct assistant professor in the Department of Plant Breeding and Genetics and a scientist at the U...

Modeling the restless brain

...mpare studying the brain to studying other complex systems such as cellular metabolism, the economy or global climate change. Models must be used to test theories and generate new insights into how the system works as a whole. And while technologies such as functional MRI allow scientists to measure some...

Simulations unravel outer membrane transport mechanism

...ver. Molecular biologists have difficulty studying systems that involve complex interactions between proteins...nd this is going in the direction of what’s called systems biology. This is essential because none of these proteins actually works alone. Each works in concer...

In mice, drug protects against diabetes and atherosclerosis

...he report describes tests of the inhibitor on cell systems in culture and in live mice. In one experiment, mice genetically engineered to be highly susceptible to atherosclerosis were fed high-fat diets and assigned to receive the drug or an inert substance. One set of mice was put on a high-fat "western" di...

Brain holds clues to bipolar disorder

...identified patterns of abnormalities in the neural systems that underlie emotional processing and cognitive control unique to the bipolar brain. Such abnormalities are valuable biomarkers for the illness and have the potential to help clinicians diagnose bipolar disorder earlier and more efficiently. Dr. Phi...

Brightening prospects of using fluorescent nanotubes in medical applications

...orescent proteins – widely used for imaging living systems – begin fading within a few hours. Quantum dots last several days before degrading. Hertel’s team is currently working on the next step necessary for many biomedical uses: finding a way to attach molecules to the surface of the nanotubes that will...

Researchers examine carbon capture and storage to combat global warming

...ak, and do a good job of engineering the injection systems and paying attention to where the carbon dioxide is actually going,'' Orr said. While a thorough technical understanding of the risks will reveal best practices, the scientists also stressed the need for good management to see that proper procedur...

Undergraduate research shows leaderless honeybee organizing

...minance hierarchy structured --we have centralized systems of control. But bee colony systems of control are very different – they are totally de-centralized.” Schneider’s lab studies the hon...

Small, self-controlled planes combine plant pathology and engineering

...at facilitates collaboration related to autonomous systems in the College of Engineering, the College of Agriculture and Life Sciences, and the College of Natural Resources. Scientists have used aircraft to monitor the movement of airborne pathogens for years, but Schmale is the first plant pathologist to...

Could fungal collection hold the key to new life-saving drugs?

... focus on drug discovery. They have developed test systems to detect biological activity in samples of natural products that could lead to new medicinal products. Previous work at SIDR found activities from plant extracts against diabetes, obesity and psoriasis. Professor Alan Harvey, Director of SIDR sai...

Penn researchers link cell's protein recycling systems

...n that the autophagy-lysosomal and the proteasomal systems are trains that run on different tracks, with similar purposes, but no point of intersection,” explains senior author J. Paul Taylor, MD, PhD, Assistant Professor of Neurology. “The new finding directly challenges this thinking by showing that one sy...

Reconstructing the biology of extinct species: A new approach

...ism linking a species' locomotion with the sensory systems that process information about its environment," says Alan Walker, Evan Pugh Professor of Anthropology and Biology at Penn State University, one of the team's leaders. The researchers studied 91 separate primate species, including all taxonomic fami...

Turn-ons and turn-offs for neurons

...escribed a tetracycline-controlled gene expression systems (Tet systems), which allow the regulation of gene ...atically examined individual components of the Tet systems and delineated the necessary conditions for reversible control of gene expression in neurons. In ...

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

... “This study made us realise that the immune systems of insects are not static but evolve and different...wledge to enhance specific reactions of the immune systems in other mosquitoes to control the spread of the disease.”...

Antarctic icebergs -- Hotspots of ocean life

...e diatom cells, known for their role in productive systems such as upwelling areas of the west coast of the U.S. or ice-edge communities in polar oceans. As diatoms are the preferred food for krill, we expect the changes in phytoplankton community composition to favor grazing as a key biological process invo...

Putting feelings into words produces therapeutic effects in the brain

...es as an alarm to activate a cascade of biological systems to protect the body in times of danger. Scientists see a robust amygdala response even when they show such emotional photographs subliminally, so fast a person can’t even see them. But does seeing an angry face and simply calling it an angry face...

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