Brett Wong is on a mission to help uncover the mechanism that regulates our ability to withstand heat stress. The goal is to help improve survival rates among those who suffer the most during heat waves: the elderly and people with conditions such as diabetes and heart disease.
The award-winning University of Oregon doctoral degree students research is the first to identify histamine receptors as contributing to increased blood flow during heat stress. Skin blood flow is a key factor in compensating for exposure to prolonged heat waves. "These are the same receptors that are involved in seasonal allergies for which people take antihistamines," says Wong, who is the lead author on an article describing his findings in the November issue of the Journal of Physiology. Co-authors are Brad W. Wilkins, research associate, and Christopher Minson, assistant professor of human physiology and co-director of the UO Exercise and Environmental Physiology Laboratories.
Theirs is the first study designed to examine a potential role for histamine receptors in skin blood flow in humans. They tested the H1 and H2 histamine receptors and found that only the H1 receptor was involved in skin blood flow changes. The National Institutes of Health (Heart, Lung and Blood Institute) funded the study. "Many deaths in the Midwest have been associated with an inability to increase skin blood flow and regulate body temperature," Wong says. "If we can understand the basic science behind increasing skin blood flow in healthy young individuals, well be able to help at-risk populations."
Melody Ward Leslie | EurekAlert!
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For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
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For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
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Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
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Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
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Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
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