Tag: "experimental" at biology news

Talented sniffer: A receptor known for guiding sperm to egg plays a role in the nose

...many, addressed this question by using a number of experimental approaches. They demonstrated the expression of hOR17-4 in the human nose by using standard molecular techniques, whereas they tested and demonstrated the actual function of the receptor in a simple "sniffing test" as well as with electrical recordin...

Stanford researchers establish center for physics-based simulations of biological structures

...a field, cover a range of scales and have a lot of experimental data from the real world to provide the constraints necessary to drive and validate models and simulations. The problems under investigation are all currently existing peer-reviewed projects: RNA folding, which has implications for rheumatological di...

Dying cells encourage neighbors to grow

...d for cell proliferation. Although artificial, the experimental creation of undead cells allows this phenomenon to be expanded and studied. The authors provide evidence that apoptotic cells that are allowed to complete the process of dying also secrete the growth-stimulating signals. The researchers conclude ...

Putting physiology into the Nobel Prize: 2004 marks 100th anniversary of Pavlov's award

... Use of the "Pavlov sling" to reduce discomfort in experimental animals. In his breakthrough experiments on salivation and digestion, Pavlov emphasized the neural control of the salivary glands as the "prototype of a general scheme of an innervation mechanism." According to Smith: "The insight was that the psycho...

University of Oregon professor wins 2004 Spiers Medal

...ed second harmonic generation, developing both the experimental methodology and a theoretical framework for interpreting the second harmonic response. After completing her doctorate with George Pimentel at the University of California at Berkeley, Richmond spent five years as a junior faculty member at Bryn...

Component of volcanic gas may have played a significant role in the origins of life on Earth

...w called the Miller and Urey experiment--that gave experimental underpinnings to Oparin's ideas. In the experiment, Miller boiled H2O, CH4,H2, and NH3 gases in a glass apparatus containing a pair of tungsten electrodes. He subjected the chemicals to an electric discharge, intended to simulate condition...

Story tips from the Department of Energy's Oak Ridge National Laboratory, October 2004

...X is a PPPL-ORNL partnership. Construction for the experimental facility is scheduled to begin in October. First plasma is scheduled for 2008. [Contact: Mike Bradley, 865-576-9553; bradleymk@ornl.gov ]. GEOGRAPHY -- A vision for security . . . National security could be enhanced with a system that quickly sor...

Estrogen protects male rats from aortic aneurysms

...s one of the first to include both female and male experimental animals and to compare results between sexes. The ATVB paper describes how scientists in the Upchurch laboratory first perfused the aortas of male and female rats with elastase, an enzyme that triggers an uncontrolled inflammatory reaction and create...

Study in Royal Society journals presents evidence for inherited factors in homosexuality

... P Grammenoudis and Dr C Tsakmakis There are some experimental works which provide compelling arguments for the p...model are discussed in the paper with reference to experimental results. Contact: Dr Charalampos Tsakmakis, Technische Universitat Darmstadt, Institut fur Mechanik,...

Coke versus Pepsi: It's all in the head

...o soft drinks made excellent subjects for rigorous experimental studies. In their study, the researchers first det...s of light or pictures of a Coke or Pepsi can. The experimental design enabled the researchers to discover the specific brain regions activated when the subjects us...

Laboratory test of evolutionary theory confirms importance of links between populations

...rm of the virus. According to Bohannan, microbial experimental systems have become increasingly popular in ecology, due in part to the degree of control they offer and their relative simplicity. "Coevolutionary change happens rapidly in these communities and can be easily detected. Furthermore, the genes underly...

Experimental drug prevents vaginal simian HIV transmission in monkeys Science study says

...sts coated the vaginal surfaces of monkeys with an experimental drug 15 minutes before exposure to the immunodefic...blished by AAAS the nonprofit science society. The experimental drug is a chemically synthesized protein called PSC-RANTES, designed by Science coauthors Robin Of...

The long road to a promising malaria vaccine started at NYU School of Medicine

...hole in evoking a response. This work provided the experimental basis for clinical trials of the first semi-synthetic malaria vaccine in 1987. This vaccine was developed by the Nussenzweigs in collaboration with scientists at Hoffmann-LaRoche. It was the first vaccine to show that the CS protein could protect hum...

Multi-species herbivore outbreak follows El Nio drought in Panama

... than usual even as researchers were setting up an experimental protocol to monitor herbivores and leaf damage on twenty tree species reachable from the gondola on the arm of a 42 m tall modified construction crane in Panama City's Metropolitan Park. The crane, one of two in Panama and nine worldwide, permits sci...

Experimental lupus drug may also work against atherosclerosis

...ne rheumatology, and his colleagues tested TSA on experimental mice that were bred to lack a significant natural ...ilar results when he tested TSA on another type of experimental mice that are also prone to atherosclerosis. He said a gene called CD154 causes both atherosclerosis...

Dr. Harris receives NIH Javits Neuroscience Investigator Award

...ation, or LTP, can be a model for studying whether experimental treatments have affected the brain. "You can apply a drug or manipulate genes in study animals, then look and see whether it was involved in the cellular mechanisms of learning," Dr. Harris says. "If it was, then you would take the same animal and te...

For inferring the biological tree of life, simple is better

...es computational work on phylogenetic methods with experimental studies to understand how genes evolve new functions. He is particularly interested in the evolution of hormones and the receptor proteins that mediate their effects on the body. In 2003, Thornton resurrected the ancient gene for the first steroid h...

ENCODE consortium publishes scientific strategy

...ortium is the complexity of the problem. No single experimental approach can be used to identify all functional elements, and many current methods may not provide a cost effective means of finding functional elements in a target as large as the human genome. Furthermore, many functional elements are only active i...

New genomic method can identify disease-causing genes

...cause of this, the mouse is the most commonly used experimental model for studying human disease, and the "mouse to man" approach is widely used. Since analyses of mouse genetic models by traditional methods are very time-consuming and costly, this novel computational approach represents a major advance for this ...

UF scientist: 'Brain' in a dish acts as autopilot, living computer

...reate novel computing systems," he said. DeMarse experimental "brain" interacts with an F-22 fighter jet flight simulator through a specially designed plate called a multi-electrode array and a common desktop computer. "It's essentially a dish with 60 electrodes arranged in a grid at the bottom," DeMarse said...

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(Date:7/28/2014)... a new study suggest two ways to effectively address the ... in obese women, compared to women of a normal body ... researchers say, but as the population has increased in weight, ... obese women. Studies have consistently found that obesity has a ... in turn affect how well the pill prevents pregnancy. ...
(Date:7/28/2014)... Children,s Research Hospital study found that 73 percent of ... risk of developing metabolic syndrome and related health problems ... appear in the current issue of the journal ... adult survivors of childhood cancer in the study had ... like high blood pressure, abdominal obesity, elevated triglyceride and ...
(Date:7/28/2014)... A powerful new tool that can help advance ... green and renewable bioenergy, has been developed by ... Joint BioEnergy Institute (JBEI), a multi-institutional partnership led ... JBEI researchers have developed an assay that enables ... nucleotide sugar transporters, critical components in the biosynthesis ...
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