Tag: "roles" at biology news

New model for studying species distributions and the mid-domain effect developed

...such models and analyzes specific models that omit roles for variation in the quality of environmental conditions. Under a very general set of conditions, these models are shown to produce mid-domain effects. These are qualitatively similar in shape, but of substantially lower magnitude, compared to rand...

African grey parrot is first bird to comprehend numerical concept akin to zero

...r's attention; the model and trainer also exchange roles so that the student sees that the process is fully interactive. The student, in this case, a middle-aged parrot, tries to reproduce the correct behavior. So far, results using this learning technique with small groups of autistic children, taught by ...

Insight into cell metabolism will help interpret PETs, MRIs

...c puzzle by showing that brain cells have distinct roles in the metabolic process. His team (which included Vishwasrao and Webb) found that neurons use oxygen to convert carbohydrate to energy (a process called oxidation) and that astrocytes kick in subsequently to produce lactate fuel (a process called gl...

Newly discovered role for heart response enzyme may yield better heart failure therapy

...s' experiments revealed that PI(3)K plays multiple roles as an enzyme that affect heart responses. It manufactures signaling molecules called phospholipids in the cell. And it activates other molecules, among them one called "non-muscle tropomyosin," which plays an important role in maintaining cell struct...

Muscle repair: Making a good system better, faster; implications for aging, disease

...nces. The plasminogen system likely has multiple roles in muscle repair. Understanding how the plasminogen system works in skeletal muscle may give some clues to improving repair of different tissues, especially heart, which is similar in many ways to skeletal muscle....

France's highest scientific honor awarded this year to Salk Institute scientist Ronald M. Evans

...and PPAR nuclear hormone receptors, as playing key roles in regulating the body's storage and burning of fat. Mice that are genetically engineered to produce an overactive version of PPAR burn dietary fat at very high rates and have stronger slow-twitch muscle mass. When placed on a rodent-sized treadmil...

Asthma, allergies may reduce risk of brain cancer

... "I'm not sure if these cytokines play independent roles in both allergies and the development of brain tumors, if allergies and GBM share a common pathway in the immune system, or if it is allergies themselves that reduce GBM risk," she said. At any rate, having asthma or other allergic conditions may be ...

PTEN, TSC2, and tumorigenesis

...en and Tsc2 heterozygous mice to investigate their roles in tumorigenesis. Dr. Brendan Manning and colleagues (Harvard School of Public Health) found that the more benign nature of tumors lacking Tsc2 arises from the fact that a negative feedback loop exists to limit Akt signaling in these tumors. However,...

APS oxytocin/vasopressin conference: 13 highlighted presentations

...sopressin Young points to studies confirming their roles in social cognition and suggesting a developmental role for oxytocin in shaping normal adult social behavior. He strongly advocated observing nature for new animal behavioral and physiological models to further research. "Oxytocin, vasopressin and so...

OT, VP studied as novel psychiatric drug sources; consider gender-specific drug models

...chers have long recognized the important endocrine roles played by the pituitary hormones oxytocin (OT) and... begun reporting evidence solidifying the possible roles of OT and VP in social behavior, both normal (bonding, romance) and pathological (autism, aggression...

Soil fertility in the tropics can be influenced by landscape and precipitation, study finds

...s revealed that landscape and erosion play crucial roles in determining soil fertility in tropical ecosystems. "This study is the first to accurately predict the distribution of nutrients across a complex tropical forest landscape, and then to detect these shifts in nutrient status using airborne sensors,"...

Researchers identify gene's role in suppressing longevity

...f SIRT genes because of their potential regulatory roles in the immune system, genomic stability and DNA re... would also permit Alt's team to explore potential roles for SIRT1 in tumor suppression and other functions....

Unraveling a stomach cancer puzzle

...ortantly without affecting Stat3's other important roles in the body. Add to that the evidence suggesting that Stat3 is also involved in breast, head and neck, and prostate cancers, and we have a compelling case for investigating the development of therapies that target Stat3."...

Multiple genetic 'flavors' may explain autism

... protein product but may have important regulatory roles in the expression of the gene. "These coding mutations tracked with an increased severity of rigid-compulsive behaviors," Sutcliffe explained. These types of behaviors are a common characteristic of autism and related disorders like obsessive-compuls...

Specialized immune-system B cells play double-barreled role

...ine action. For example, the new insights into the roles of the two B-1 cell subtypes could help explain why the immune-triggering molecules called antigens from the pneumococcus bacteria do not elicit a strong adaptive immune response in infants, people with compromised immune systems and the elderly. Suc...

Researchers pinpoint genes that drive spread of breast cancer to lungs

...tients. According to Massagu, further study of the roles of the metastatic genes indicated that some genes might enhance survival of particular cancer cells in the primary tumor and spread to the lung, while others might afford those cells growth advantages once they take hold in the lung. "It's all about ...

Discovery of new dopamine action may yield alternative psychiatric drugs

...s of psychiatric therapy. Akt also plays important roles in many other processes in the body, including inflammation, cell death and the cell proliferation that can spur cancer, the researchers added. Therefore, similar mechanisms might also underlie other disease pathways....

Trapping genes that control flower development

... information on many genes likely to have critical roles in this essential stage of plant reproduction.Genes provide the blueprints for proteins that carry out the functions of living cells. In any particular organ or tissue at any particular stage of development, gene activity may be "on" (expressing the ...

8th World Wilderness Congress begins next month

...ompkins will both be in Anchorage to discuss their roles in the re-emerging wildlands philanthropy boom. THE FIRST MEGA-FLYOVER Dr. Michael Fay, who gained international renown for his 1999 trek through Central Africa, will offer the first report on his latest expedition by light aircraft across the en...

Penn researchers discover key to how SARS virus infects cells

...on. The cellular cathepsin enzymes have many other roles within the body, including mediating the inflammatory immune response in the lungs and antigen processing in T cells. The Bates research group, in collaboration with the Diamond group, has identified a few compounds, including MDL28170, which they pl...

1 2 3 4 5 6 7 8 9 10

(Date:8/21/2014)... the water window? It consists of radiations in the ... by the water in biological tissues. New theoretical findings ... within the water window. These could be the basis ... of the biological samples or to be used in ... physical mechanism needed to efficiently generate the harmonic radiationswhich ...
(Date:8/21/2014)... A team of researchers at Louisiana Tech ... using affordable, consumer-grade 3D printers and materials ... contain antibacterial and chemotherapeutic compounds for targeted ... doctoral students and research faculty from Louisiana ... collaborated to create filament extruders that can ...
(Date:8/20/2014)... Aug. 20, 2014 George E. Fox, a John and ... of Houston (UH), was named a fellow in the International ... , Fox is one of four members two ... chosen as fellows in 2014. Fellows are elected every ... more than 500 members from more than 20 countries, the ...
Breaking Biology News(10 mins):Water window imaging opportunity 2Louisiana Tech University researchers use 3D printers to create custom medical implants 2Louisiana Tech University researchers use 3D printers to create custom medical implants 3UH professor named fellow by International Astrobiology Society 2
Other Tags
fotonrosaviakosmosfinalisedfallscranfieldmemorandumgrandchildtevsecologistschiropracticsimplifyneurologicsystemicamygdalainvolvementsudan