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Tag: "increasing" at biology news

Disease diagnosis, biodefense among UH chemical research projects

...ul in lowering blood pressure, treating cancer and increasing oxygen absorption in lung tissue. Czernuszewicz's research is focused on the roles of salivary nitrophorins in storing and releasing NO and binding histamine by using resonance Raman spectroscopic techniques as a probe of molecular structure. # Yuri...

Small species back-up giant marsupial climate change extinction claim

... suggest that between 50,000 and 20,000 years ago, increasing aridity in Australia led to cooler and drier conditions that decreased wooded habitats and expanded deserts and grasslands, but researchers are still not clear what impact it had on fauna. The Darling Downs contain some of the most extensive and sig...

Emergence of cancer as major cause of childhood death in developing countries is not being adequately addressed

...as health priorities on their agendas.?/p> The increasing pediatric cancer death rate in countries with limited resources is especially tragic because strategies exist that could be used to ensure wider access to effective cancer treatment, according to Raul C. Ribeiro, M.D., director of the St. Jude Intern...

Potential Drug Target For Treating Cocaine Abuse Found

... Cocaine produces intense feelings of euphoria by increasing the amount of dopamine that is sent from one neuron to another within the brain reward system. Dopamine signals pleasure and reward by binding to receptors on the receiving neurons, after which it is reabsorbed for later use by a protein that transpo...

Compounds in plastic packaging act as environmental estrogens altering breast genes

... that provide a genomic signature according to the increasing maturation of the organ. "Estrogenic agents invol...in protein production governed by various genes at increasing ages from 21 to 100 days." These included proteins regulating cell proliferation and differentiatio...

Putting ecology back into river restoration

...e criteria: a guiding image; improving ecosystems; increasing resilience; doing no lasting harm; and completing ...ront revitalisation projects many be successful in increasing economic and social activity near a river, but can constrain natural processes of the river and floo...

Taking the piste out of Alpine vegetation

...mposition, with snowbed and late-flowering species increasing in abundance while wind-edge and early-flowering species declined. This is due to delayed snow-melt in areas covered with artificial snow, and the fact that artificial snow is made from river and lake water which contains more minerals and other chem...

Bevacizumab Combined With Chemotherapy Improves Progression-Free Survival for Patients With Advanced Breast Cancer

... because the study had met its primary endpoint of increasing progression-free survival (the amount of time patients lived without the cancer getting worse). Preliminary results suggest that patients in the study who received bevacizumab in combination with standard chemotherapy consisting of single-agent pacl...

Supercomputers to focus brains on AIDS dilemma

... in recent years, mutant strains of HIV have shown increasing resistance to many of these formerly effective drugs, raising the specter of reduced life-spans and wider spread of HIV. "Fortunately, in this ongoing battle, computational and structural biology may once again be on the verge of contributing a new ...

New polysaccharide may help combat multidrug resistance in cancer

...therapeutic drugs. The researchers also found that increasing hyaluronan synthesis in cells increased resistance to drug treatment. "Our work indicates that hyaluronan antagonists, for example small hyaluronan oligomers, reverse the malignant properties of cancer cells, including proliferation, invasiveness, a...

Changing ecosystems throw scientists mega-challenges

...r resources, global spreading of diseases, and the increasing threat of biological and chemical terrorism. Among the research challenges are the need to understand how and why these changes are occurring—especially when multiple stresses are acting on environmental systems simultaneously—and how best to respond...

Designing vaccines by computer

... developed by computer may sound unnerving but the increasing role of computer modelling in the development of new vaccines could bring new products onto the market quicker, benefiting patients and saving pharmaceutical companies millions of pounds. Researchers using informatics and computer modelling can help...

Successful Test Of Single Molecule Switch Opens The Door To Biomolecular Electronics

...ts insulating state. This decrease of current with increasing voltage is called “negative differential resistance?(NDR) and it allows a useful device to be made with just two electrodes, not the three originally used. “NDR is the basis for memories, switches and logic elements,?Lindsay says. “It has been obser...

Science study holds implications for gene therapy and stem cell biology

...egrate into the genome of a cell, thus potentially increasing the activity of neighboring genes. A previous stu...born disorders or cancer. There continues to be an increasing interest in gene therapy research with blood stem cells because these cells can be extracted and man...

Nature provides inspiration for important new adhesive

...d, and the laminated veneer lumber that is finding increasing use to replace conventional joists and beams in construction. Techniques have also been explored to create the new adhesives from tree bark or wood decayed by brown rot fungus. Regardless of the material used to produce the adhesives, they are renew...

Structure-building cell signals also may influence learning and memory

...l through a nerve cell synapse can be enhanced (by increasing the number of receptors) or diminished (by a receptor decrease). "The balance has to be optimal, since too much memory activation can also be a problem," said Yamaguchi. Yamaguchi's team, which worked on this project for more than two years, had sus...

Primates on the brink

...ld's apes, monkeys, lemurs and other primates-face increasing peril from humans and some could soon disappear forever, according to a report released today by the Primate Specialist Group of IUCN-The World Conservation Union's Species Survival Commission (SSC) and the International Primatological Society (IPS),...

Chemical Engineer Kao Explores Antibiotic Synthesis With DNA Chips

...erproduction of the antibiotic tylosin. Instead of increasing the length of time that a bacterium produces the antibiotic--the case with erythromycin--these two genes allow the bacterium to produce it faster. Again, the specific mutations eluded Kao's group. Currently, the researchers are trying to identify th...

Bugs, even 'bad' ones, can be educationally beneficial, new book says

...hile leaving healthy tissue intact. Because of the increasing prevalence of bacterial resistance, the therapy has been used recently to replace antibiotics. Since retiring in 1995, Waldbauer has written several books, including "The Handy Bug Answer Book," "What Good are Bugs" and "Insects Through the Seasons....

Atmosphere may cleanse itself better than previously thought

...sphere and attempt to predict how it will react to increasing quantities of hydrocarbon pollutants, which generate smog. But these models do not always function well, Francisco said, in part because OH radicals are in some ways an unknown quantity. "One of the biggest questions in our field concerns the amount...

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