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Tag: "animal" at biology news

Agent slows aging in mice

...ent desert shrub is now a front- runner in ongoing animal experiments to find out if certain chemicals, known to inhibit inflammation, cancer and other destructive processes, can boost the odds of living longer. Today at the annual meeting of the American Aging Association, University of Michigan scientist...

Math that powers spam filters used to understand how brain learns to move our muscles

...how the brain controls movement. Initially, the animal learner made large errors, but also stored the information about its mistakes in a memory bank so it could adapt and make more accurate predictions the next time around. Every time the learner repeated the task, it would sift through the prior knowle...

Threats to wild tigers growing

...national cooperation among nations that harbor the animal will also be essential. Dinerstein and his coauthors conclude by recommending that these countries appoint "tiger ambassadors" to advocate for the species, step up efforts to prosecute poachers, and provide economic incentives to encourage conservati...

Old memory traces in brain may trigger chronic pain

...reat phobic behavior over the past decade. In animal studies, D-Cycloserine appeared to significantly d...tion disappeared,” Apkarian said. Based on the animal results, the next step will be to test the drug in clinical trials, Apkarian said. “When we do t...

CSIRO scientists join fight to save 'Tassie devil'

...sible and spreads internally through the body, the animal usually dies within a few months from starvation and the breakdown of body functions. The integrated research team at AAHL will use a variety of techniques including microscopy, microarrays and a range of molecular techniques to search for infect...

A new plant-bacterial symbiotic mechanism promising for crop applications

...t (soybean, peas, ground nuts and so on…) and as animal feed (alfalfa, clover, sainfoin). In addition, cultivation of legumes living in symbiotic association with bacteria can contribute to vegetation regeneration schemes on soils depleted in nitrogen owing to overexploitation, erosion or desertification....

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

...gy as well as the Department of Chemistry. Any animal with red blood cells can develop malaria, which is caused by a single-cell protozoan parasite transmitted by the bite of the female Anopheles mosquito. There are about 160 different species of malaria parasites, according to Roepe. Five infect humans...

In mice, drug protects against diabetes and atherosclerosis

...ssful drugs for humans, Hotamisligil described the animal results as a long-sought success after a decade of...hibitor on diabetes, the scientists used a genetic animal model of obesity and insulin resistance, as well as normal mice fed a diabetes-inducing diet. In ...

Brain holds clues to bipolar disorder

...egulates numerous processes inside the body. Using animal and cellular models, Dr. Manji and colleagues at NIMH showed that disruptions in these pathways resulted in many of the core symptoms of bipolar disorder and explained many other observations about the disease. The findings suggest a new avenue for t...

New study finds genetically engineered crops could play a role in sustainable agriculture

...hout insecticides, there are reductions of certain animal groups that warrant further investigation.” What is clear is that the advantages or disadvantages of GM crops depend on the specific goals and vision for agroecosystems. As NCEAS Director, Jim Reichman explains, “This important study by an inter...

New collaborative research reveals chimpanzees can sustain multiple-tradition cultures

Scientists have long wondered if local animal cultures exist, and now, based on findings by researchers at the Yerkes National Primate Research Center at Emory University, the University of Texas and St. Andrews University, Scotland, they have their answer: Yes. The study, available in today’s...

Newly discovered antibody may be body's natural defense against Alzheimer's

... The existence of such antibodies was predicted by animal studies, but they were never previously demonstrated to be present in substantial quantities in blood from normal humans. Lead researcher Dr. Norman Relkin, a behavioral neurologist and neuroscientist at NewYork-Presbyterian Hospital/Weill Cornel...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...proves immune system function. “Researchers in animal behavior often study what keeps sexual signals like bright colors or elaborate songs ‘honest,’ or why all individuals cannot produce them ad nausea and try to get mates,” said McGraw. “The reason typically is that long tails and fancy dances incur co...

Small, self-controlled planes combine plant pathology and engineering

...ins some of the world’s most devastating plant and animal pathogens and remains largely a mystery to scienti...cations for the rapid spread of invasive plant and animal pathogens in the United States.” Schmale’s research is not limited to the study of Fusarium, howe...

Penn researchers link cell's protein recycling systems

...k to rescue neurodegenerative diseases in a simple animal model. The study appears this week in Nature. The cell has two internal pathways for breaking down proteins. The ubiquitin-proteasome pathway marks unwanted proteins with ubiquitin tags and shuttles them for rapid breakdown to a complicated struc...

University of Pittsburgh School of Medicine researchers develop 'off-the-shelf' vascular grafts

... of the tissue-engineered blood vessel in a larger animal model, such as a pig, which has a coagulation system more similar to that in humans. The advantage of our approach is that the graft could utilize the patient’s own stem cells and be ready for implantation almost immediately or, at most, after a rela...

Staphylococcus aureus hides out in cells

A major cause of human and animal infections, Staphylococcus aureus bacteria may evade the immune system’s defences and dodge antibiotics by climbing into our cells and then lying low to avoid detection. New research in the online open access journal BMC Genomics shows how S. aureus ...

Endosome-mediated signaling in plants

...and the down-regulation of cell signaling. Work in animal cells over the past several years has shown that receptor endocytosis can actually facilitate signaling through the cell, by bringing signaling components in contact with their activated receptors. Drs. Geldner, Chory and collaborators now extend ...

Fat fish put obesity on the hook

...l of our species. The zebrafish has become a model animal for the study of many diseases because it has a backbone and because its genetics have been well described. This is one more example of how basic experimental biology – zoology physiology and genetics in this case – can be brought to bear on human ...

Reconstructing the biology of extinct species: A new approach

...ch team has documented the link between the way an animal moves and the dimensions of an important part of i...th a fluid, which moves within the canals when the animal moves. The fluid's movement is sensed by special cells that send signals to the brain, triggering t...

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