Navigation Links
Study finds steroids may persist longer in the environment than expected
Date:9/26/2013

ucts that we know are present in trace amounts in our water supply. We should use what we're learning about trenbolone to more closely scrutinize the fate and better mitigate the impact of these products in the environment."

The team found similar results for dienogest, a hormone used in a birth-control pill called Natazia, and dienedone, a banned anabolic steroid that has been marketed as a body-building supplement.

Trenbolone acetate is implanted in the ears of more than 20 million cattle in the United States, according to studies cited by the researchers in their paper.

The drug is metabolized and then excreted by livestock, and makes its way into waterways mainly through runoff.

The steroid has been considered safe due to its rapid degradation, with studies pointing to an environmental half-life of less than a day. But there has been concern that it and other synthetic drugs, when found in concentrated amounts, can be harmful to aquatic species and the environment generally. Studies have pointed to steroids and other drugs' effects on fish, through fewer eggs produced by females to skewing the sex of some species.

"We rarely see fish kills anymore, and we probably aren't discharging many carcinogens into surface waters anymore. But I don't believe this necessarily means that our water is safe for aquatic organisms," says Edward Kolodziej, associate professor in engineering at the University of Nevada-Reno and the other corresponding author on the Science paper. "It just might be harder to characterize the adverse effects associated with contaminant exposures these days."

Sunlight is one catalyst for breaking down compounds in the environment. But in this study, by simulating day and night in the lab, the research team found that the steroid's chemical compounds never fully disappeared in daylight. Moreover, during a simulated night, under typical surface water conditions, some of the compounds regenerated
'/>"/>

Contact: Richard Lewis
richard-c-lewis@uiowa.edu
319-384-0012
University of Iowa
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. Law that regulates shark fishery is too liberal: UBC study
3. New study will help protect vulnerable birds from impacts of climate change
4. Study jointly led by UCSB researcher supports theory of extraterrestrial impact
5. BYU study: Using a gun in bear encounters doesnt make you safer
6. 15-year study: When it comes to creating wetlands, Mother Nature is in charge
7. Pycnogenol (French maritime pine bark extract) shown to improve menopause symptoms in new study
8. Crystal structure of archael chromatin clarified in new study
9. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
10. University of Houston study shows BP oil spill hurt marshes, but recovery possible
11. Study demonstrates cells can acquire new functions through transcriptional regulatory network
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/12/2015)... Va. , March 12, 2015 IriTech, ... and a member of the Texas Instruments Design Network, ... Naidu has demonstrated its IriShield USB MK2120U device ... scanning facility for pension distribution. The ... assembled to be marketed in India ...
(Date:3/12/2015)... -- Beta Systems today announced Fast ... (IAM) solution for a fixed price and with ... IAM package, customers benefit from the 30 years, ... implementations across different industries. The new fixed-price IAM ... necessary services and consulting. It spans the implementation ...
(Date:3/11/2015)... DUBLIN , Mar. 11, 2015 Research and ... addition of the "Access Control Market by Product, ... to 2020" report to their offering. , ... is expected to reach $10.4 billion by 2020, with ... control market report covers the products types such as ...
Breaking Biology News(10 mins):Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 2Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 3Beta Systems Fast Forward IAM Available Now: a Standardized IAM Package at a Fixed Price 2Global Access Control (Cards & Readers, Biometrics, Controllers, Management Software) Market 2015-2020 - Analysis of the $10 Billion Market 2
... December 1, 2008 Although naturally occurring smallpox was ... obtain smallpox from a laboratory and release it into ... vaccine may be insufficient for universal administration. In a ... The American Journal of Medicine , researchers found that ...
... induce major differentiations in the metabolic make-up of ... November 28 in the open-access journal PLoS ... led by Karsten Suhre, has conducted a genome-wide ... genes involved in the breakdown of fats. The ...
... through DNA but also through the millions of proteins and ... known as "epigenetic marks," act both as a switch and ... turned on or off, and how much message an "on" ... information is known to be passed from parent to offspring ...
Cached Biology News:New study indicates smallpox vaccination effective for decades 2Study identifies genetic variants giving rise to differences in metabolism 2CSHL scientists discover a new way in which epigenetic information is inherited 2CSHL scientists discover a new way in which epigenetic information is inherited 3
(Date:3/25/2015)... BLOOMINGTON, MN (PRWEB) March 25, 2015 ... a breakthrough in nanoparticle technology that will enable ... and many other diseases with a simple breath ... ahead on the U.S. Food and Drug Administration ... 2016 launch of the innovative Nanoparticle Biomarker Tagging ...
(Date:3/25/2015)... /CNW/ - The Gairdner Foundation is pleased to ... recognizing some of the most significant medical discoveries ... the world,s most esteemed medical research prizes, the ... a $100,000 (CDN) prize to each scientist for their work. ... and innovation across the country, inspiring the next ...
(Date:3/25/2015)... 2015 Proove Biosciences , a ... to announce the success of their commercially supported symposium, ... to Optimize the Management of Pain, at the 31st ... Harbor, Maryland on Thursday, March 19th, 2015. ... President Lynn Webster , M.D., former Florida Society ...
(Date:3/25/2015)... 25, 2015 Oxis International, Inc. (OXIS) (OXI.PA) ... commercialization, announced today Oxis CEO Tony Cataldo ... 2015 at 4:15pm EST to update shareholders and other ...     Oxis Chairman and CEO Tony ... been very exciting for Oxis and our shareholders. There ...
Breaking Biology Technology:Ancon Medical Researchers Make Nanotechnology Breakthrough for Disease Screening Technology 2Ancon Medical Researchers Make Nanotechnology Breakthrough for Disease Screening Technology 32015 Canada Gairdner Awards Honour Top Medical Discoveries Around The World 22015 Canada Gairdner Awards Honour Top Medical Discoveries Around The World 32015 Canada Gairdner Awards Honour Top Medical Discoveries Around The World 42015 Canada Gairdner Awards Honour Top Medical Discoveries Around The World 52015 Canada Gairdner Awards Honour Top Medical Discoveries Around The World 62015 Canada Gairdner Awards Honour Top Medical Discoveries Around The World 72015 Canada Gairdner Awards Honour Top Medical Discoveries Around The World 8Proove Biosciences Hosts Symposium on Incorporating Genetic Testing to Optimize the Management of Pain 2Oxis Biotech Inc. Announces Corporate Update Conference Call for March 31 2
... 7 Endocare, Inc. (Nasdaq: ENDO ) ... have entered into a settlement agreement stipulating to termination ... Galil Medical pursuant to which Endocare would have acquired ... in Delaware Chancery Court. , , ...
... Covance Inc. today ... company as vice president and chief scientific officer of ... industry experience, including bioanalytical research, translational research, and talent ... development strategy for Covance,s bioanalytical services. , ...
... advanced energy research , , MONTREAL, July 7 ... technology company, today announced that it will jointly form ... Edmonton and the Alberta Energy Research Institute (AERI). , ... demonstration of novel catalytic conversion processes to produce advanced ...
Cached Biology Technology:Endocare and Galil Medical Announce Settlement of Litigation 2Covance Appoints Dr. Steven M. Michael as Vice President and Chief Scientific Officer of Global Bioanalytical Services 2Enerkem Announces World-Class Advanced Energy Research Center in Edmonton, Alberta, Canada 2Enerkem Announces World-Class Advanced Energy Research Center in Edmonton, Alberta, Canada 3
... to siRNA library screening, optimal ... identified and verified for each ... CellReady siRNA Transfection Optimization Kit, ... optimizing transfection conditions in 96 ...
... positioning slides offers multiple drive technologies ... and manual. With this series, users ... systems. These slides also offer anti-cage ... to 10 nanometers, integrated home/ limit ...
Ethylene glycol-bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid, Molecular Biology Grade...
Kit Components: Anti-PARP LumiGLO Chemiluminescent Substrate Immunoblot Blocking Reagent Pyronin Y Reagent Goat Anti-Rabbit IgG, HRP conjugate Double-It Reagent Film Exposure Folders Autor...
Biology Products: