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Tag: "report" at biology news

Scientists discover that three overlapping signals in embryo help get the backbone right

...cts." The three proteins identified in the team's report are among at least five that block other signals to allow the back, or dorsal, structures to form. Thirteen years ago, Richard Harland, professor and chair of the Department of Molecular and Cell Biology at UC Berkeley, showed that injecting one of t...

Marine sponge yields nanoscale secrets

...at the University of California, Santa Barbara. A report about these exciting new results involving the use of gold nanoparticles is the cover story of the current issue of the scientific journal, Advanced Materials. The article is written by Daniel E. Morse, professor of molecular, cellular and developmen...

Friendly bacteria in humans may protect against HIV

...d trap HIV and may protect against infection. They report their findings today at the 2005 American Society for Microbiology Beneficial Microbes Conference. "I believe every life form has its natural enemy, and HIV should not be the exception," says Dr. Lin Tao, Associate Professor of the Department of Ora...

Doctors closer to using gene analysis to help trauma patients

...in emergency rooms and intensive care units. In a report published today (March 7) in the Proceedings of the National Academy of Sciences, researchers from eight institutions, including the University of Florida, describe how they were able to consistently analyze which genes are active in patients with se...

Red delicious, Northern Spy apples have most antioxidants, chemists find

...apples that pack a heftier antioxidant punch. The report appears in the June 29 issue of the American Chemical Society’s peer-reviewed Journal of Agricultural and Food Chemistry. ACS is the world’s largest scientific society. Researchers have long known that apples are a good source of antioxidants, a gro...

Activation of thermoreceptors mediates raw garlic's burning pungency

...ith its raw, uncooked state. Researchers this week report that this pungency, manifested as a characteristic mixture of burning and prickling sensations and flavor, can be ascribed largely to the effects of a particular compound and its ability to activate specific protein thermoreceptors in the mouth. The...

After a time-shift, mixed signals from the circadian clock

...kes place are not well understood. Researchers now report findings that suggest this adaptation process does not necessarily involve a gradual and synchronous adaptation by the neurons that comprise the central circadian clock--rather, that different components of the clock tend to adapt to a shifted light ...

The lopsided brain: Attention bias is shared by humans and birds

...phenomenon known as pseudoneglect. Researchers now report that pseudoneglect is not restricted to humans but is shared by birds, suggesting not only that brain structures thought to play a requisite role in pseudoneglect may not actually be essential for this phenomenon, but also that pseudoneglect may refl...

Disease progression model of pancreatic cancer developed by Penn researchers

... that observed in pancreatic cancer patients. They report their findings in the May issue of Cancer Cell. The disease that develops in the Kras and p53 mutant mouse model demonstrates distinct similarities to human pancreatic cancer at multiple levels. "In terms of clinical presentation, metastatic burden,...

Report that delayed motherhood decreases life expectancy of mouse offspring

...none showed significant deleterious effects. This report identifying effects of delayed motherhood on life expectancy and body weight of offspring will surely stimulate inquiries into mechanisms resulting in these disturbing consequences, as well as epidemiological studies in humans, according to the edito...

Researchers make surprise discovery that some neurons can transmit three signals at once

... more than just neurons. Just as surprising, they report in the lead article of this month's Nature Neuroscience, is that by definition these three neurotransmitters are seemingly at odds with each other. One, glutamate, is a textbook excitatory neurotransmitter; while the other two, GABA and glycine, are ...

New polysaccharide may help combat multidrug resistance in cancer

...in the Journal of Biological Chemistry, scientists report that a molecule previously thought to play a purel...ical Chemistry paper, Dr. Toole and his colleagues report on further studies which indicate that hyaluronan increases the cellular production of a multidrug t...

Of mice and men's (and women's) contraceptives

...type of contraceptive for both men and women. They report their findings in this week's online edition of the Proceedings of the National Academy of Sciences. "Not many proteins are expressed in both male and female germ lines that are specific only to the germ line," says Hecht. Germ line refers to the gr...

Gene therapy cures inherited liver disease in rats

...aid researchers at Baylor College of Medicine in a report in the Proceedings of the Natural Academy of Sciences. "This is the first time this disease (Crigler-Najjar syndrome) has been completely cured long term with a single injection in an adult animal," said Dr. Brendan Lee, associate professor of molec...

Scientists discover how Ebola virus infects cells

...e treatments for Ebola virus infections in humans, report scientists supported in part by the National Institute of Allergy and Infectious Diseases (NIAID), a component of the National Institutes of Health (NIH). The researchers, whose paper is published online today in Science Express, identified two cell...

Master gene controls healing of skin in fruit flies and mammals

...e Royal Melbourne Hospital in Melbourne, Australia report that, although insect cuticle and the outer layer of mammal skin are very different chemically, the grainyhead gene is also essential for normal skin development and wound repair in mice. "The discovery that grainyhead-like factors are required for ...

Changing ecosystems throw scientists mega-challenges

...ociety in the 21st Century. Among the changes the report cites are rapid shifts in climate and ecosystems, ...es at different spatial and temporal scales." The report encourages NSF to maintain its foundation-wide emphasis on investigations of coupled human and natur...

Stem cell research - new cell lines

...eaching hospital of UNSW. "There has only been one report of cloning of cells from human embryonic stem cells anywhere else in the world ?in Israel." By growing a human stem cell colony from a single cell, researchers are one step closer to deriving a homogenous population of cells of a particular type. "...

Unchecked DNA replication drives earliest steps toward cancer

...tant genes in the cell and, eventually, cancer. A report on the new findings appears in the April 14 issue of Nature and is featured on the journal's cover. "Cancer progression is driven by these mutations," explains Thanos D. Halazonetis, D.D.S., Ph.D., professor in the molecular and cellular oncogenesis...

Scientists generate patient-specific stem cells, Science study says

...(or in one case, the same person), the researchers report development of 31 hollow balls of cells called "hu...ggs can divide on their own. Hwang and colleagues report that the cells are chromosomally normal, self-renewing and "pluripotent" ?meaning they have the abil...

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