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Tag: "serve" at biology news

An artificial cornea is in sight, thanks to biomimetic hydrogels

...hydrogel lenses on the surface of the cornea could serve as extended-wear contact lenses. Inlays are also possible. The cornea contains layers--a top layer of protective epithelial cells, a middle layer called stroma that provides the collagen matrix that gives the cornea its shape, and an innermost endo...

Some butterflies travel farther, reproduce faster

...tches -- rocky outcroppings containing plants that serve as food and provide a hospitable home for the butt...ites, disease and the disappearance of plants that serve as food and shelter. Populations established on an isolated patch may require a good flier to reach ...

Artificial cornea offers better results for infants, some blind patients

...y. Aquavella was the first doctor in the nation to serve a fellowship focused specifically in cornea surgery, in the early 1960s; he served under Dohlman, a leading figure in corneal science. The two physicians have worked together since, with Dohlman developing better artificial corneas, and Aquavella doi...

Malaria treatment efficacy compromised in certain HIV-positive patients

...rticle. CD4 lymphocytes, white blood cells that serve a critical role in the immune response to malaria, are also the prime target for HIV. Low CD4 cell counts are a characteristic of HIV-induced immune suppression. In this study, Dr. Van geertruyden and colleagues from the Institute of Tropical Medicin...

One signal elicits thousands of answers

...one way of phosphorylation possible where proteins serve as integrating platforms for a variety of incoming stimuli", says Mann. "This integration of signals could be independent, with phosphorylation of each site occurring separately from the others. It could also be dependent so that a 'priming site' has...

Studies look at how genes affect antipsychotic drug response

...response," he said. Bishop says the project will serve as a first step toward a comprehensive pharmacogenetic analysis of metabolic pathways affecting response to the drug. He was presented with an award for new investigators from the American College of Clinical Pharmacy for the project. The UIC Cent...

Molecules in blood foretell development of preeclampsia

...orm, they are classified as receptors because they serve as targets for other molecules. When molecules attach, or bind, to the receptors, the binding process initiates a chain of events in the cells. PlGF binds to Flt1 on the lining of blood vessels. Another substance, vascular endothelial growth facto...

How mammals fuel milk production may have implications for cancer

...ntiate to form the structures that will ultimately serve as the site of milk synthesis, the researchers said. Second, mammary epithelial cells must coordinately activate multiple biosynthetic pathways—as well as deactivate pathways that break lipids down—in order to have the metabolic capacity to synthesiz...

New clues to how sex evolves

...the association with the nuclear envelope seems to serve a similar function, which is to stabilize chromoso...ei, there are only four kinds of ZIM proteins that serve to initiate the pairing of six different chromosomes (in C. briggsae, only five proteins for six chr...

Vanishing beetle horns have surprise function

...e case. Instead we have shown these horns actually serve an important function regardless of whether they are resorbed in the pupal stage or maintained into the adult." Because all the Onthophagus beetles the scientists examined form horns during development, Moczek and colleagues also argue the evolut...

Fight weeds with plant pathogens

...ative plant and animal species. In addition, weeds serve as reservoirs for plant pathogens that impact crops. According to Rosskopf, there are two approaches used for managing weeds with plant pathogens-the classical biological control approach and the bioherbicides approach. The classical biocontrol ap...

Tearing down the fungal cell wall

...produced by the protein encoded by this gene could serve as a physical bridge in the layers of the cell wall or function as a regulator of cell wall biosynthesis. Future work will focus on identifying the role of the product of the AbNPS2 gene which should allow us to get an important handle on the precise...

Protein structure initiative launches new resources for the scientific community

...the PSI will establish a "Knowledgebase" that will serve as a headquarters for structural information generated by its centers. For every protein, scientists will be able to find the best available information about the structure and biological function. The Knowledgebase also will offer experimental detai...

Nobel Laureate finds 'elegant' explanation for DNA transcribing enzyme's high fidelity

...e?to DNA by copying it into the RNA molecules that serve as templates for protein in organisms from yeast to humans. Now, Kornberg and his colleagues report in the December 1, 2006 issue of the journal Cell, published by Cell Press, new structures that reveal another critical piece of the puzzle: how the s...

OHSU researchers demonstrate how white blood cells cannibalize virus-infected cells

...D8+ T-cells are specialized white blood cells that serve an important role in the body's immune system. The cells attack and destroy disease "invaders" such as viruses in the body. Previous studies indicated that T-cells may consume parts of cells with which they interact, but this new research shows this ...

New study aims to stop sepsis in its tracks

...e scientists will discover whether the factors can serve as molecular markers to help track organ function and recovery progress in patients. This molecular approach may also shed light on new ways to understand and treat sepsis. And consortium researchers will study the cost-effectiveness and logistics ...

ASU researchers test antibacterial effects of healing clays

...wered a posting on the Clay Mineral Society's list serve placed by Thierry Brunet de Courssou. He was asking to have someone take high resolution scanning electron micrographs of the clays," Williams explains. "I confess that we all ignored him initially." According to the Brunet de Courssou Web site, t...

Researchers to study why dead zone returned to Lake Erie

...percent of the surface freshwater in the U.S. They serve as the focus for a multi-billion dollar tourist and recreation industry, supply 40 million people with drinking water, provide habitat for wildlife and fish, and support transportation and agriculture production. Lake Erie is the smallest of the five...

Ape gestures offer clues to the evolution of human communication

...closely tied to a particular emotion and, thereby, serve a more adaptable function. For example, a single gesture may communicate an entirely different message depending upon the social context in which it is used. "A chimpanzee may stretch out an open hand to another as a signal for support, whereas t...

Major link in brain-obesity puzzle found

...cules called tyrosine kinases, including ones that serve as receptors for insulin and growth factors that circulate in the brain and body. One of its most important binding partners is JAK2, which is activated every time a leptin molecule binds to a cell. Since leptin is the body’s messenger boy to the...

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