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Tag: "behind" at biology news

Researchers make long DNA 'wires' for future medical and electronic devices

.... Depending on how they place the comb, they leave behind strands of different lengths and shapes. "Basically, we're doing nanotechnology using only a piece of rubber and a tiny droplet of DNA solution," Guan said. Computer chips that bridge the gap between the electronic and the biological could make det...

Phenolic compounds may explain Mediterranean diet benefits

...e increase in the nitric oxide bioavailability are behind the observed improvement in ischemic reactive hyperemia," Dr. Pérez Jiménez said. Dr. Pérez Jiménez said that olive oil may be superior to seed oils because it is a natural juice, pressed from the olives, so it does not go through the type of proces...

USC researchers track down the stem cells that create feathers

...e feathers so useful as writing implements-leaving behind a ring of stem cells for the creation of the next generation of feathers. "The unique topological arrangement of stem cells, proliferating cells, and differentiating cells within the feather follicle allows for continuous growth, shedding, and regen...

'Computer-chemistry' yields new insight into a puzzle of cell division

...nticancer drugs to block the runaway cell division behind some cancers, said the researchers. Significantly, their insights arose not just from meticulous biochemical studies, but also from using sophisticated simulation techniques to perform "chemistry in the computer." In a paper published Nov. 24, 200...

The secret love life of plants

...e signal functions and what chemical reactions are behind it. "Explaining the mechanism behind double fertilisation in flowering plants and early seed development is particularly interesting in t...

Why the Amazon rainforest is so rich in species

...This research is helping us understand the reasons behind the large number of species in the Amazon rainforest ?it's another piece of the biodiversity puzzle in place. Species split at very different rates, and their extinction or transformation is mostly determined by the ecology and biology of each specie...

UCLA imaging study of children with autism finds broken mirror neuron system

... the brain's mirror neuron system as the mechanism behind these autism symptoms. "Our findings suggest that a dysfunctional mirror neuron system may underlie the social deficits observed in autism," said Mirella Dapretto, lead author and assistant professor in residence of psychiatry and biobehavioral scie...

Picking apart how neurons learn

...poised to further dissect the molecular mechanisms behind learning. "The next step is to determine whether LTD is crucial for motor learning, the so-called holy grail in the field," says one of the study's co-first authors, Jordan Steinberg, an M.D., Ph.D. candidate at Hopkins. ...

'Banana-jawed' fossil mammal linked to rare sound-producing skill

...cording to DeBlieux, help in refining explanations behind this mammal's unusual jaw may come from studying dinosaur models. In particular, he said, a number of museums have built models of dinosaur sound-producing skeletal cavities that have enabled scientists to reconstruct the possible sounds made by them...

Chemotherapy gel may fight breast cancer and reduce breast deformity

...emotherapy slowly to kill the cancerous cells left behind after surgery but that also would fill in the dimples and sometimes quite significant indentations that are common after breast surgery and radiation." To test their idea, the researchers encapsulated a common breast cancer chemotherapy drug, doxoru...

Commonly used antidepressants may also affect human immune system

...t in an excitatory manner," Ahern said. "The point behind this transmission is not entirely clear, but it appears to be an additional way of stimulating a T cell response." Drugs that block serotonin reuptake "likely change some of the parameters of T-cell activation, but we don't know yet if it enhances o...

UW-Madison engineers squeeze secrets from proteins

... claimed that "protein gets out protein." The idea behind this is that engineered enzymes are at work in the wash breaking down elements of a stain. "Once a protein is folded, you can actually unfold it or destabilize it, either by heating it up, or by adding solvents to the system, like urea for example, ...

Spousal illness can trigger partner death

...s affect health. We need to explore the mechanisms behind the stresses associated with these hospitalizations as we look for ways to protect people when their central relationships are disrupted." The study found that certain illnesses in a spouse are more harmful to partners than others. The more a diseas...

New possibilities to fight pests with biological means

...rth's surface [1]. To understand the biochemistry behind this plant defence, biologists of the Max Planck institute studied corn plants, caterpillars of the species Spodoptera littoralis (Egyptian cotton leaf worm) and parasitic wasps of the species Cotesia marginiventris. Deciphering the complex mix of sc...

Attractive birds more immune against bird flu

...y have begun to look more and more at the genetics behind what are called secondary sexual characters, such as the tail of a peacock, the stripes of the female gulf pipefish, and the white spot on the forehead of the collared flycatcher. In many species both males and females prefer to mate with those who h...

Less is more, gene study shows

...o, it was hard to pinpoint the evolutionary forces behind the loss. So the researchers focused their attention on another human-specific pseudogene, CASPASE12. Work by other researchers had shown that the gene has completely lost its function in non-Africans, but a small percentage of Africans and Africa...

Oh, rats! Designer animals reveal possible heart disease genes

...tists have struggled to pinpoint the precise genes behind this complex disease. Now, however, they have a ne...ood pressure, in order to pinpoint candidate genes behind heart disease. In total, the scientists built 2,200 microarray gene expression profiles from these d...

Cracking the genetic code for control of gene expression

... without a code or 'grammar' to reveal the message behind the sequence, the genomic DNA is merely a list of millions and millions of base pairs, A's, C's, G's and T's one after the other. Based on the universal code by which DNA encodes amino acids, we can make sense of the constantly increasing amout of D...

UCLA scientists uncover mechanism of response to targeted therapy

...'t know why. If they could determine the mechanism behind the response, they would be able to predict which ...ded to this drug, but we didn't know the mechanism behind the response," said George Thomas, first author of the study, an assistant professor of pathology an...

Berkeley researchers lay groundwork for cell version of DNA chip

...cise patterns of multiple cell types. The authors behind the Angewandte Chemie paper have solved the problem with the creation of a highly selective cell adhesion system that uses single-strands of synthetic DNA to fasten the cells to a surface. This enables different types of cells to be selectively targ...

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