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Tag: "tough" at biology news

Scientists collaborate to assess health of global environment

...y by giving them the information they need to make tough decisions. A substantial body of work addressing specific aspects of the assessment will follow this month's release of the global synthesis report. A report on global biodiversity will be available in May; a report on desertification is due out in ...

First-ever Compounds To Target Only Metastatic Cells Are Highly Effective Against Breast, Prostate, And Colon Cancers

... exciting," he said. "Metastatic disease is such a tough problem, and these compounds could provide patients with a brand new kind of hope." The research was funded by grants from the National Institutes of Health. Co-researchers included Ms. Dandan Shan (first author), Mr. Lin Chen, and Dr. Xiaojing Ma,...

Potential treatments for neurofibromatosis

...nt patients from walking. "Those are particularly tough problems. They're very challenging to treat surgically, and radiation and chemotherapy don't help," said Dr. Clapp. ...

PGA on a tour under the skin

...nous catheters, and antibiotic resistance makes it tough to battle. Moreover, the mechanism through which the organism becomes so pathogenic once the protective barrier of the skin is removed remains unclear. In their study appearing online on February 3 in advance of publication in the March 1 print edit...

New tumor-suppressor gene discovered

...ent of the fly's eye. Lai's team also tackled the tough challenge of discovering how the mats gene is able to suppress the growth of tumors. "We did not find many clues when we compared the sequence of the mats gene with the sequence of other genes in the public databases," Lai says. "But we did find a co...

Atmosphere may cleanse itself better than previously thought

... OH radicals the atmosphere holds," he said. "It's tough to get a handle on them because they are so reacti...ntly have weak spectral features there, so they're tough to see," said Francisco, who contributed the study's computations. "The upshot is that a lot of atmo...

Proteomics brings researchers closer to understanding microbes that produce acid mine drainage

...es surrounding streams. The film, which can form a tough sheet that is millimeters thick, sits atop green, 108 degree Fahrenheit runoff containing zinc, iron, copper and arsenic. "This system is a very tightly coupled biogeochemical system, and we are just trying to find out how it works," she said. "Thi...

New method shows it is possible to grow bone for grafts within a patient's body

...layer is a little like scotch tape: the outside is tough and fibrous but the inside is covered with a layer of special pluripotent cells which, like marrow cells, are capable of transforming into the different types of skeletal tissue. So Shastri and his collaborators decided to create the bioreactor space...

New lifespan extension genes found

...east that lack Sir2 also live longer when put on a tough diet, showing that some other genes must be at work. Researchers led by David Sinclair at Harvard Medical School and Su-Ju Lin at UC Davis' Center for Genetics and Development and Section of Microbiology screened for other life-extending genes in ye...

New technology shows our ancestors ate…everything!

...nfirm previous evidence that A. africanus ate more tough foods, such as leaves, and P. robustus ate more ha...n, they may have to process something very hard or tough in order to survive." "For years, it's been a dream of many researchers interested in our lineage t...

New molecule may aid in production of biofuels and fungi-resistant plants

...for breaking down chitin. Because chitin is a very tough molecule, chitinases have quite a challenge. In order to break the bonds between the sugar units, they must gain access to the bonds by somehow disrupting the packing of the sugar chains in the chitin molecule. How exactly chitinases overcome these c...

Alleged 40,000-year-old human footprints in Mexico much, much older than thought

... Renne noted that the black, basaltic rock is very tough and is mined in slabs for building. Pre-Columbian Mexicans also constructed buildings from the rock, which they called xalnene, meaning "fine sand" in the Nahuatl language. Today, trucks headed toward the quarry routinely drive across the xalnene tuf...

Hot-spring bacteria flip a metabolic switch

...nities that are exquisitely adapted to life in the tough hot spring environment," Grossman commented. "There may be several different organisms living in a given mat, but it seems that they are engaging in community metabolism that changes depending on the time of day. Perhaps it is more correct to conside...

Flu not the only germ threat this time of year

...nstitute of Allergy and Infectious Diseases. It's tough to tell RSV apart from the flu. Both are primarily respiratory illnesses whose effects can range from simply giving the person a few sniffles to causing life-threatening pneumonia. Someone with the flu is more likely to have a fever and body aches, a...

U of S researchers develop new vaccine candidate against hepatitis C

...tients. Researchers working in this field have a tough job, says van den Hurk. "The hepatitis C virus is always mutating. For example, one patient can be infected with a strain that spawns sub-strains with different sequences. They are all present at the same time, in the same patient." The VIDO vaccin...

How sperm crack the whip

...wriggling of spermatozoa, as well as the way their tough membranes stretch tightly stretched over underlying structures, made the cells incompatible with this research technique. "Back in 2001, we made more than a thousand attempts to patch clamp sperm without success," said Clapham. "We had been quite f...

Secrets of the sea yield stronger artificial bone

...ut toxic chemical to create something that is very tough -- this fascinates us." ...

'Scent of a woman' tells male redback spiders to find a mate

...tting to virgin females sooner. The competition is tough -- you'll often find up to eight males on a female's web, says Andrade. The density of males is also critical -- in areas with many males, the researchers found that the males were smaller but had more fat on their body. They suspect that these males...

Tiny shock absorbers help bacteria stick around inside the body

...m evolved together to help the bacteria persist in tough environments inside a host animal or person. "Research on these fimbriae uncovers something that's essentially a mechanical nanotechnological device created by nature, and gives us the opportunity to adapt such a system for biotechnological and eve...

Researcher studies, treats military with 'silent disease'

...ity of the volunteers' lives. "The medications are tough to take," she said. On initial questionnaires, study volunteers reported that they were depressed; anxious about their health, families, and careers; and having trouble sleeping. Once treatment began, however, they reported that their quality of lif...

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