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Tag: "reported" at biology news

Why are coyotes getting more aggressive?

...decades, several dozen attacks on humans have been reported in California. Coyotes, which are closely related to dogs and wolves, are ubiquitous in North America, but they rarely have been a danger to humans. Fearful of being hunted and trapped, these large carnivores have typically stayed in wooded areas an...

Spiders help scientists discover how muscles relax

... or IVIC) in Caracas, Venezuela. The findings are reported in the August 25, 2005, issue of the journal Natur...aylor's research group at Florida State University reported the atomic structure of the smooth muscle myosin molecules. The similarity suggests, Padron said, ...

Siberian tigers hang tough

...d WWF. The last winter survey, conducted in 1996, reported 330-371 adult tigers, with 85-105 cubs. "The difference in results between 1996 and this survey," said Dimitri Pikunov, coordinator of the survey in Primorye Province, and a well-known specialist on this big cat, "is not due to a change in numbers, b...

Fragment of yellow fever virus may hold key to safer vaccine

... stomach. At that stage, ter Meulen and colleagues reported last year in the Journal of Infectious Diseases, a person's own immune system, disrupted by its reaction to yellow fever virus infection, may lead to death rather than recovery. The most recent study was led by Stephane Daffis, a graduate student at...

VCU study shows hormone-like molecule kills cells that cause inflammation in allergic disease

...res that received IFNγ. Similar results were reported in vivo using a mouse model. Mice with a mutation that causes them to overproduce IFNγ were used, and again, researchers observed a significant decrease in mast cell numbers due to the excess of IFNγ. When researchers tried to culture mast ...

Climate model links higher temperatures to prehistoric extinction

...res that received IFNγ. Similar results were reported in vivo using a mouse model. Mice with a mutation that causes them to overproduce IFNγ were used, and again, researchers observed a significant decrease in mast cell numbers due to the excess of IFNγ. When researchers tried to culture mast ...

New type of rejection blocker protects kidneys after transplant

...ive co-stimulatory blocker. In the phase II study reported in NEJM, 218 patients were randomized to receive cyclosporine or either a less-intensive or more-intensive course of belatacept. All patients received several other drugs that are included in standard post-transplant therapy. At the end of six months...

Hepatitis C responds best to combo of ribavirin and interferon, study concludes

...rcent of those getting both drugs. Other measures reported by the researchers included patient status at the end of treatment, quality of life and whether patients had a reduction in liver inflammation. Patients who had combination therapy did better in all categories. Side effects, however, were much more c...

Pregnant women at higher risk for HIV, Uganda study finds

...supports the findings of two previous studies that reported a greater risk of acquiring HIV during pregnancy than after delivery. However, neither study accounted for risk factors that contribute to HIV risk. Gray and his colleagues assessed 2,188 HIV-negative women who were sexually active and were pregnan...

New Discovery May Help Doctors Treat Infertility

...ternative infertility treatments. The findings are reported in Endocrinology, published in August, 2005. “What we found is that the beta estrogen receptor plays a role in moving the egg outside the ovary so it can be fertilized,?said Kenneth Korach, Ph.D., Laboratory Chief at the National Institute of Enviro...

Most common lung cancers may begin in newly discovered cells

...me of the lung cells. Four years ago, Jacks's lab reported that some of the resulting cancer cells carry the molecular markers of both of the two kinds of cells found in non-small lung cell cancers. In mice, the tumors start deep in the lung, past the trachea and the branches to the lobes. Ciliated cells tha...

Thinking the pain away? Study shows the brain's painkillers may cause 'placebo effect'

...receiving a medicine to ease their pain. They then reported feeling less pain. The mind-body connection is qui...was associated with the expectation of pain relief reported by the volunteers. In other areas, that activation was associated with relief of the intensity of pa...

A novel virus for croup

...HCoV-NL63 negative patients. Previous studies have reported trends in croup, such as the relative susceptibili...s the newly identified virus has spread worldwide, reported in Australia, Japan, the US and Canada. The study will also contribute towards the clarification of ...

Micro-molecule plays big role in birth defects

...other health problems. The finding, which will be reported this week in the online Proceedings of the National Academy of Sciences, deals with tiny strands of genetic material called microRNAs. Once thought to be little more than cellular debris, these short strands of RNA may perform a vital role in health...

Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals

...ic signals by more than one mechanism. The work is reported in Current Biology by a team including Thorsten Ritz, of the University of California, Irvine, and Wolfgang and Roswitha Wiltschko, of the University of Frankfurt, Germany. It has been known for many years that birds possess a magnetic "inclination ...

Nicotine triggers the same brain reward circuitry as opiates

...e used to help smokers quit. In their experiments reported in the June 16, 2005, issue of Neuron, the researc...blocking nicotine reward . . . . Given the results reported here, clinical studies designed to evaluate administration of opioid antagonists just prior to cues ...

Gap-climbing fruit flies reveal components of goal-driven behaviors

...ms in the fruit fly Drosophila. The findings are reported in Current Biology by Roland Strauss, of the University of Wurzburg, and Simon Pick, of the University of Ulm, both in Germany. In their studies, the researchers presented freely walking flies with a chasm in their path. The flies had shortened wing...

Analysis of flower genes reveals the fate of an ancient gene duplication

...s ago in an ancestor of modern plants. The work is reported in Current Biology by a team led by Brendan Davies of the University of Leeds, England. Gene duplication--a relatively uncommon event in which a single copy of a gene is transformed into two separate copies--is thought to play a key role in the evol...

Monkeypox mystery: New research may explain why 2003 outbreak in the US wasn't deadly

...r natural conditions. The first cases of monkeypox reported in humans involved contact between humans and animals in Africa. The first outbreak of monkeypox in the Western hemisphere occurred in the U.S. Midwest from April to June of 2003. The virus entered the U.S. in a shipment of African rodents from Ghan...

'Shifty-eyed' Monkeys Offer Window Into Brain's Social Reflexes

...bert Deaner and Assistant Professor Michael Platt, reported their findings in the Sept. 16, 2003, issue of Current Biology. The research was supported by the National Institute of Mental Health and the National Eye Institute. In their experiments, the researchers compared the eye movements of humans and rhe...

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