A promising new approach to cadmium induced hepatoxicity: Cytoprotective effect of midkineJanuary 17, 2008Cadmium comes from a wide variety of sources in the environment and from industry and is extremely toxic to humans. Environmental exposure can occur via the diet and drinking water. In chronic exposure, it also accumulates in the body, particularly in the kidneys and the liver. The liver acts as a detoxification organ. It filters the blood coming from the gastrointestinal tract and liver cells can be exposed to almost whole ingested and absorbed molecules and toxins at their highest concentrations through the portal vein. At present, there is no effective treatment for cadmium intoxication other than symptomatic treatment. Some chelating compounds are used for this purpose. A research article published on January 7, 2008 in the World Journal of Gastroenterology (volume 14, issue 1) addresses this problem. An understanding of the processes that ensure self-protection against toxic substances is essential for the development and application of new therapeutic regimens. In research conducted in hepatocyte cell culture, cadmium exposure causes dose and time dependent damage in liver cells. Dr. Yazihan et al found cadmium intoxication stimulates secretion of midkine in a dose and time dependent manner. Midkine is mitogenic to cells. Midkine expression is found in the liver from early gestation. It is a heparin binding growth factor that regulates cell growth, survival, and differentiation. In this study it was found that exogenous midkine application induces hepatocyte proliferation. Midkine treatment prevented apoptosis, lactate dehydrogenase leakage and cytotoxicity caused by cadmium exposure in Hep3B cells. Midkine secretion might be one of the self defense mechanisms of the hepatocytes. The results of this study suggest a promising future therapy with midkine in cadmium induced hepatotoxicity. Midkine may also be beneficial to other hepatotoxic conditions. World Journal of Gastroenterology |
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| Related Cadmium Current Events and Cadmium News Articles Transforming Nanowires Into Nano-Tools Using Cation Exchange Reactions A team of engineers from the University of Pennsylvania has transformed simple nanowires into reconfigurable materials and circuits, demonstrating a novel, self-assembling method for chemically creating nanoscale structures that are not possible to grow or obtain otherwise. Berkeley Researchers Find New Route to Nano Self-Assembly If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance towards this goal has been achieved by researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. Harvard scientists bend nanowires into 2-D and 3-D structures Taking nanomaterials to a new level of structural complexity, scientists have determined how to introduce kinks into arrow-straight nanowires, transforming them into zigzagging two- and three-dimensional structures with correspondingly advanced functions. Water quality in orbit Space is not a fun place to get a stomach bug. To ensure drinking water is adequately disinfected, University of Utah chemists developed a two-minute water quality monitoring method that just started six months of tests aboard the International Space Station. Gold Solution for Enhancing Nanocrystal Electrical Conductance In a development that holds much promise for the future of solar cells made from nanocrystals, and the use of solar energy to produce clean and renewable liquid transportation fuels, researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have reported a technique by which the electrical conductivity of nanorod crystals of the semiconductor cadmium-selenide was increased 100,000 times. Nanopillars Promise Cheap, Efficient, Flexible Solar Cells Researchers at the U.S. Department of Energy's Lawrence Berkeley National Laboratory and the University of California at Berkeley have demonstrated a way to fabricate efficient solar cells from low-cost and flexible materials. Making nanoparticles in artificial cells Two new construction manuals are now available for the world's smallest lamps. Based on these protocols, scientists from the Max Planck Institute of Colloids and Interfaces have tailor-made nanoparticles that can be used as position lights on cell proteins and, possibly in the future as well, as light sources for display screens or for optical information technology. Study shows transfer of heavy metals from water to fish in Huelva estuary A team of researchers from the University of Cadiz has confirmed that zinc, copper and lead are present at high levels in the water and sediments of the Huelva estuary, and have studied how some of these heavy metals are transferred to fish. New Nanocrystals Show Potential for Cheap Lasers, New Lighting For more than a decade, scientists have been frustrated in their attempts to create continuously emitting light sources from individual molecules because of an optical quirk called "blinking," but now scientists at the University of Rochester have uncovered the basic physics behind the phenomenon, and along with researchers at the Eastman Kodak Company, created a nanocrystal that constantly emits light. Singapore scientists synthesize gold to shed light on cells' inner workings Highly fluorescent gold nanoclusters for sub-cellular imaging have been synthesized by researchers at the Institute of Bioengineering and Nanotechnology (IBN). More Cadmium Current Events and Cadmium News Articles |
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