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Tag: "young" at biology news

Drug-resistant bacteria patterns in intensive care units changing nationally

...y." Due to community MRSA's ability to infect the young and healthy, traditional risk factors for identifying hospital-associated MRSA colonization, such as dialysis and prior hospitalization, are not effective predictors of whether a person is carrying the community strain. "Lines are blurring as far a...

Uncovering sex-change secrets of black sea bass

..."We invest in our brood stocks, the parents of the young fish, much as a thoroughbred horse farm invests in mares and stallions," he says. "It doesn't do us much good if we always have to go out and get new females." With funding from NH Sea Grant, Berlinsky has teamed with Nardi and GreatBay Aquaculture ...

Males with elevated levels of testosterone lead shorter lives but have more success siring offspring

...igher reproductive success when they did so. While young males treated with testosterone increased their ability to attract older females, it resulted in poor reproductive performance. "Although testosterone increased male fitness, as measured by lifespan and number of offspring, the extended effects on ...

Avian flu transmission to humans may be higher than thought

...llness. "Low socioeconomic status, female sex, and young or old age were also risk factors for the disease," they note. The researchers estimate that between 650 and 750 cases could be attributed to direct contact with sick or dead poultry. "Our results from a large epidemiological population-based st...

Outsmarting the smartie bug

...or cause of death: around 1 million people, mostly young children in developing countries, die each year. The research, published online today in PLoS Genetics, shows how the target of the vaccines, called the polysaccharide capsule, has evolved and allows the researchers to determine functions of the ge...

Zebra finches remember songs dad sang

... in most songbird species, only the male sings." A young zebra finch will hear his father's song, remember ...by's first babbling syllables. But eventually, the young bird manages an almost complete copy of his parent's song that includes some improvised elements. ...

African amphibians make extreme parental sacrifice: The skin off their backs

...as baby mammals depend on their mothers' milk, the young of the African amphibian Boulengerula taitanus nou...ly modified to be particularly nutritious, and the young depend entirely on this food source for perhaps as long as four weeks, Nussbaum said. "This form of...

Losing sleep undoes the rejuvenating effects new learning has on the brain

...f spatial memory, quite literally keeps your brain young by ensuring a better survival rate for new brain cells in the hippocampus. However, not getting enough sleep eliminates the potential benefit of new learning on the hippocampus by suppressing neurogenesis. "Mild, chronic sleep restriction may have lo...

Potential heart benefit found in stem cells

...not only because they can be easily collected from young volunteers, but also because of their collection-efficacy. A single sample of the menstrual blood returns a large number of stem cells. In a second study, the same team collected human umbilical cord blood-derived mesenchymal stem cells (UCB-MSC). ...

FSU biologist says new dinosaur is oldest cousin of Tyrannosaurus rex

...n closely spaced rings –?revealing rapid growth to young adulthood –?followed by six widely spaced rings co... helped to generate interest in the sciences among young children, typically fascinated by animals such as dinosaurs and crocodiles. He is an assistant profe...

For some young fish, early gene expression is a clear harbinger of fated lifestyle

...types often co-occur within a single population of young fish. Before reaching sexual maturity and leaving their natal stream, migratory individuals undergo dramatic morphological, physiological, and behavioral changes that prepare them for adulthood in open fresh and salty waters. In their innovative wor...

Protein finding could lead to treatment for inflammatory diseases

...ved skin infection in children and sexually active young adults. It is a common disease, with antibodies detected in up to 50 percent of populations tested in numerous studies. The lesions resemble chickenpox (a disease actually caused by a herpes virus) and are often confused as such. There is no treatme...

Scientists discover a genetic switch that links animal growth and cancer

...utrition, they are able to remain in a perpetually young state for a long time without growing. When they eventually find food they start growing and maturing into adults. The researchers discovered that this juvenile-to-adult switch is controlled by PTEN. When the gene for PTEN is defective, the animals a...

U-M scientists identify major psoriasis susceptibility gene

... never comes back. But for the other 50 percent of young people who get it, psoriasis progresses to become a chronic life-long disease." The PSORS1 gene is actually one of over 20 different varieties (scientists call them alleles) of a gene called HLA-C. "In terms of our grocery store analogy, think of PS...

Flu not the only germ threat this time of year

...sidents mainly through health care workers who had young children at home. While investigators like Falsey and Walsh search for a vaccine against RSV, and a better way to check people who may have the illness, for ordinary people the effects and treatment are largely the same, whether a person gets the fl...

Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests

...s research several years ago was a question by his young daughter, who asked him why she could get so much closer to wild rabbits in their neighborhood while riding on her bicycle rather than on foot. "I didn't have an answer for her then. Now, I think I have one," he says. Dr. Troje's Motion Capture La...

Ethiopian development raises birth rate

...ilability of tapped water improved the survival of young children and the birth rate increased. However, the nutritional status of young children declined. Overall, neither women's health nor nutritional status appeared to be improved...

NJIT engineer poised to take stem cell research a step forward

...years ago, she earned the highest honor given to a young researcher by President Bush: The Presidential Early Career Award for Scientists and Engineers. Her research has also led to two major stem-cell discoveries: One showing that stem cells, when mixed with scaffolds, can help regenerate bone growth; a...

Researchers develop portable 'vein finder' for faster, more accurate injections

...s also difficult to find veins in obese people and young children because their vessels are covered by layers of fat." In addition to speed, the vein finder's accuracy will make treatment easier for hospital patients who need ongoing IVs or blood work. Larsen recalls a hospital stay of his own that requ...

Bocavirus infection may be associated with pneumonia in Thailand, especially in children

...eumonia patients in rural Thailand, mostly in very young children. Researchers from the Centers for Diseas...iated with pneumonia in Thailand, especially among young children," says Alicia Fry, one of the researchers on the study. Human bocavirus (HBoV) is a recen...

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