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<DIV><div class=WordSection1><p class=MsoNormal>http://www.natureworldnews.com/articles/4197/20130927/livestock-steroids-persist-waterways-study-finds.htm<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'><span style='font-family:"Arial","sans-serif"'>Steroids given to livestock can stay in the water for a long time and don't always break-down, a new study has found. Researchers said that regulatory agencies might have to closely monitor some "safe" livestock steroids to prevent damage to the aquatic ecosystem.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'>Anabolic steroids are usually given to livestock to boost their growth and are generally believed to be harmless. But, researchers at the University of Nevada, Reno and colleagues found that certain steroids such as trenbolone might not breakdown completely as previously thought.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'>Share This Story<o:p></o:p></p><p align=center class=MsoNormal style='margin-left:0in;text-align:center;text-indent:-.25in;line-height:17.25pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><o:p> </o:p></p><p align=center class=MsoNormal style='margin-left:0in;text-align:center;text-indent:-.25in;line-height:17.25pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><o:p> </o:p></p><p align=center class=MsoNormal style='margin-left:0in;text-align:center;text-indent:-.25in;line-height:17.25pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><o:p> </o:p></p><p align=center class=MsoNormal style='margin-left:0in;text-align:center;text-indent:-.25in;line-height:17.25pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span class=in-top>1</span><br><span class=in-widget><a href="javascript:void(0);" id="li_ui_li_gen_1380283755106_2-link"><span style='border:none windowtext 1.0pt;padding:0in'>i</span><span style='border:none windowtext 1.0pt;padding:0in'>n</span><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#333333;border:solid #E2E2E2 1.0pt;padding:0in'>Shar</span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#333333;border:solid #E2E2E2 1.0pt;padding:0in'>e</span></b></a></span> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'>"Our team found that these substances, after a rapid breakdown in sunlight, are capable of a unique transformation in aquatic environments under various temperature and light-cycle scenarios where the process is reversed," said Ed Kolodziej, co-author of the paper and environmental engineering associate professor at the University of Nevada, Reno.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'>According to Kolodziej and his team, the study findings might also help understand why certain fishes and other marine organisms have now started showing changes in reproductive cycles. Trenbolone works by binding with androgen, hormones that increase muscle build-up. The steroids works more efficiently than testosterone and is even used by male athletes to increase muscle mass. The steroid is banned for use in humans in many countries, including the United States. Even in small doses, the steroid could disrupt the reproductive cycle in <a href="http://www.wisegeek.com/what-is-trenbolone.htm"><span style='color:#C98C35'>women and can lead to virilization</span></a>.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'>The present research was based on both lab and field studies. The scientists found that the steroid broke down in the presence of sunlight, but never fully disappeared. The study even found that under surface water conditions, the steroid persisted. Interestingly, the remains of the steroid got together at night and regenerated the initial steroid.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'>"We knew something unique was going on," David Cwiertny, Kolodziej's research partner from the University of Iowa, said in a news release. "In daylight, it essentially hides in another form, to evade analysis and detection, and then at nighttime it readily transforms back to a state that we can detect."<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'>"Right now, I'm not alarmed, just concerned and interested in defining the real ecological risks associated with the widespread use of potent steroidal pharmaceuticals," Kolodziej added. He has been studying the effects of these substances on aquatic ecosystems for 12 years. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'>The study is published in the journal <a href="http://www.sciencemag.org/content/early/recent"><span style='color:#C98C35'>Science</span></a>.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:17.25pt'><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Laurie Tenace<o:p></o:p></p><p class=MsoNormal>Environmental Specialist<o:p></o:p></p><p class=MsoNormal>Waste Reduction Section<o:p></o:p></p><p class=MsoNormal>Florida Department of Environmental Protection<o:p></o:p></p><p class=MsoNormal>2600 Blair Stone Road, MS 4555<o:p></o:p></p><p class=MsoNormal>Tallahassee, FL 32399-2400<o:p></o:p></p><p class=MsoNormal>850.245.8759<o:p></o:p></p><p class=MsoNormal>Laurie.Tenace@dep.state.fl.us<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></DIV>
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