Tag: "circuits" at biology news

NYU scientists advance toward nanorobots

... that might some day build new molecules, computer circuits or fight infectious diseases. The research team was led by NYU chemistry professor Nadrian C. Seeman. Their findings are reported in the January 3, 2002 issue of Nature. Professor Seeman said, "DNA devices can provide models for the development of...

Science's Top Ten: nanoscale computing circuits named top scientific advance of 2001

... Reader with Asian font packs. Molecular-scale circuits that link together tiny transistors, wires, and sw...ep into your body to diagnose an illness. If these circuits can be combined into even more complex architecture, this would "undoubtedly provide computing power...

Delayed treatment of spinal cord injury may improve recovery

...improved function. This suggests that spinal cord circuits can respond to far fewer than the normal number of nerve fibers and that there may be changes, or plasticity, in connections above and below the point of injury that influence the amount of recovery, says Dr. Bregman. These findings support previous...

Hormonal changes during physiological development can alter immune response to viruses and infections

...rves to transiently activate pre?existing hormonal circuits (i.e., activational effects). In mammals, masculine development is induced by early exposure to testosterone, whereas feminine development occurs in the absence of testosterone. Because manipulation of hormones in adult animals had no effect on res...

Researchers build diagram of cell cycle clock

... are basically breaks in the circuit." Mapping the circuits of fundamental processes in health and disease is ... life run. Scientists agree that deciphering these circuits is important, but this is the first study to show that it can be done, and therefore provides reason...

Two programs will follow up on Human Genome Project

...directly from those used to manufacture integrated circuits (computer chips). These Microsystems will detect and analyze how, when and why very small populations of living cells interact with each other and their environment in real time. This work will have applications in helping to understand fundamental ...

Gene transfer enhances pair bonding in monogamous voles

...this behavior," Dr. Young points out. "When these circuits are disrupted, it may result in psychiatric diseases such as autism that are characterized by social problems. Voles provide a useful model for studying the molecular mechanisms underlying species differences in social organization."...

NSF awards interdisciplinary Penn team $1.45 million to study, develop building blocks of nanostructures

...the best properties of natural ones and electronic circuits a fraction of their current size. Percecs team will use high-resolution X-ray crystallography and nuclear magnetic resonance to study the structural and other factors that underlie individual biomolecules remarkable ability to arrange into complex ...

Dopamine-dampening gene linked to prefrontal inefficiency, schizophrenia

... COMT inhibitor will specifically enhance dopamine circuits specific to the prefrontal cortex. Also participating in the study were Terry Goldberg, Ph.D, Bhaskar Kolachan, Ph.D., Joseph Callicott, M.D., NIMH Clinical Brain Disorders Branch; and David Goldman, M.D., Chiara Mazzanti, Ph.D., Laboratory of Neuro...

Sleep in early life may play crucial role in brain development

... provide strong, suggestive evidence that synaptic circuits are modified during sleep the current study provides the first direct evidence that sleep and sleep loss modify experience-dependent changes in synaptic plasticity. "The significance of our study is that we examined a system in which we know a great ...

UCSD researchers create a home for liver cells on a silicon chip

...milar masking technique as the one employed to put circuits on computer chips. The end result is a three-dimensional home for the individual liver cells, allowing the fickle cells to come in contact with the porous silicon on all sides, much as they would come into contact with the extracellular matr...

Researchers light the path of brain's feeding circuit in mice

...e method may be useful in studies of other complex circuits in the brain. The findings are reported in the Mar...iting because, for the first time, we can identify circuits involving specific classes of neurons." Leptin, a hormone that plays an important role in regulating...

New Brookhaven Lab study shows how ritalin works

...in, thereby stimulating attention and motivational circuits that enhance ones ability to focus and complete ta... to increase motivation and also directly activate circuits of attention is likely to be key to the beneficial effects of Ritalin." Earlier animal and limited ...

Researchers develop liquid form of DNA

... ways. We've also put it on top of microelectronic circuits and can run electricity through it." Physically, ...s been a lot of discussion about using DNA to make circuits because it has a built-in ability to recognize complementary sequences of itself," Thorp said. "What...

DNA arrays decipher genome's master switches

...show that the technique can correctly identify the circuits controlled by two known master switches in yeast. ... a booklet that matches the master switches to the circuits they control in the genome," says Whitehead Member Richard Young who led the study. The technique...

Why some people just can't seem to pay attention

...sceptible to developing impairments in their brain circuits that are related to attention. Earlier research has suggested that frontal brain regions, which are important to attention-related functions, are still slightly 'immature' during the early teen-age years. On the other hand, it is of course possible...

Food and the circadian clock

...od stimuli. This study gives more insight into the circuits connecting brain and body during complex behavioral tasks such as feeding patterns. The results from this and other studies in the same field might ultimately help employees who work on changing shifts, such as nurses or fire fighters, to acclimate t...

Protein stimulates key link between nerve cells, suggesting possible target for mental retardation and nerve regeneration therapies

...ich serves to strengthen, or reinforce, the neural circuits between nerve cells that store memory. Glutamat...ne and serotonin, modulate the activity of neural circuits to influence mood and sleep. The millisecond relay of glutamate to thousands of nerve cells sparks ...

UCSF researchers reveal a fundamental decision-making unit of cells

...other components, so we can understand the complex circuits of a cell by studying its signaling proteins like N-WASP," said Kenneth Prehoda, PhD, lead author on the article and a post-doctoral scientist in Lim's lab. Co authors include R. Dyche Mullins, PhD, assistant professor of cellular and molecular pharm...

Defense Department awards Stanford nearly $5.3 million for a 'revolutionary' biosciences project

...olved by biological systems, such as the design of circuits with many coupled, nested regulatory loops." One novel aspect of the DARPA grant will be an attempt to use air traffic control theory to create a mathematical model for understanding intra- and intercellular communication. "Biological systems are ve...

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