Researchers firmly believe that alcoholism is a complex behavior that draws from both environmental and genetic factors. A recent examination of families selected for their smoking behavior has identified the same region of chromosome four that was identified by earlier studies as being linked to the initiation of alcohol consumption. Results are published in the December issue of Alcoholism: Clinical & Experimental Research.
"It is commonly observed that people that drink also smoke and vice versa," explained Kirk C. Wilhelmsen, associate professor in the departments of genetics and neurology at the University of North Carolina as well as corresponding author for the study. "This suggested to us that families selected for smoking behavior would also have an increased incidence of drinking behavior."
"Twin studies of alcohol consumption have a long history and were the first to suggest the importance of genetic factors in alcohol use and alcoholism," added Gary E. Swan, director of the Center for Health Sciences at SRI International and also an author of the study. "The identification of linkages between specific genomic regions of interest and alcohol use and abuse is an area of science that has been active for about seven years. A consistent finding from these studies is the linkage between a region of chromosome four containing several genes that produce enzymes involved in the metabolism of alcohol and families with a high frequency of alcohol abuse."
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16.07.2018 | Tokyo Institute of Technology
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16.07.2018 | American Society for Biochemistry and Molecular Biology
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.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
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.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
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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12.07.2018 | Event News
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16.07.2018 | Physics and Astronomy
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