Where fat comes from determines whether the body can metabolize it effectively. Researchers at Washington University School of Medicine in St. Louis have found that the "old" fat stored in the bodys peripheral tissues -- that is, around the belly, thighs or bottom -- cant be burned efficiently unless "new" fat is eaten in the diet or made in the liver.
The research team developed genetically engineered mice missing an important fat synthesizing enzyme in the liver. As a result, the mice, called FASKOL mice (Fatty Acid Synthase KnockOut in Liver), could not produce new fatty acids in the liver. Because liver fatty acids are vital for maintaining normal sugar, fat and cholesterol metabolism, these mice must take in dietary fat to remain healthy.
Reporting in the May issue of the journal Cell Metabolism, the researchers say these mice developed fatty liver disease when placed on a zero fat diet. "When we took dietary fat away from the FASKOL mice, their livers quickly filled with fat," says senior investigator Clay F. Semenkovich, M.D., professor of medicine and of cell biology and physiology. "Their old fat stores mobilized to the liver, but their livers could not initiate fat burning, and the fat just accumulated. We concluded that to regulate fat burning, the liver needs new fat."
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In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
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Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
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The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
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An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
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