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

Assessing the risk posed to aquatic organisms by the discharge of certain steroids and pharmaceutical products into waterways is often based on a belief that as the compounds degrade, the ecological risks naturally decline.

But there's growing sentiment that once in the environment, some of these bioactive organic compounds may transform in a way that makes their presumed impact less certain.

A new study led by the University of Iowa and published online Thursday in the journal Science found this was the case with the anabolic steroid trenbolone acetate and two other drugs.

Once popular in the bodybuilding and weightlifting communities,trenbolone acetate is now banned for human use. However, it is federally approved for use by the beef industry to promote weight gain and increase feeding efficiency in cattle.

In lab tests followed by field experiments, the researchers found that trenbolone does not fully break down in water as believed, retaining enough of a chemical residue to regenerate itself in the environment under certain conditions, to an extent that the drugs' lives may be prolonged, even in trace amounts.

Researchers says the study is a first step toward better understanding the environmental role and impact of steroids and pharmaceutical products, all of which have been approved by the federal government for various uses and that have been shown to improve food availability, environmental sustainability and human health.

"We're finding a chemical that is broadly utilized, to behave in a way that is different from all our existing regulatory and risk-assessment paradigms," says David Cwiertny, assistant professor in engineering at the University of Iowa and a co-corresponding author on the paper."What our work hopefully will do is help us better understand and assess the environmental fate of emerging contaminant classes. There are a variety of bioactive pharmaceuticals and personal-care prod
'/>"/>

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:9/19/2014)... The sense of fairness did not evolve for the ... reap the benefits of continued cooperation, so say Frans ... a review article about inequity aversion (IA), which is ... review is published in Science . , ... 35 IA-related studies to address their hypothesis that it ...
(Date:9/18/2014)... GSA Bulletin study uses tree rings to ... Chaco Wash in northern New Mexico, USA. By determining ... willow, investigators were able to precisely date arroyo sedimentary ... this data with aerial imagery, LiDAR, longitudinal profiles, and ... , Arroyos are deep, oversized channels that have vertical ...
(Date:9/18/2014)... University and the Quebec government have discovered microplastics ... Journal of Fisheries and Aquatic Sciences . , ... or industrial cleansers, to which they are commonly ... and buoyancy, they may readily pass through sewage ... in the world,s oceans, but have only recently ...
Breaking Biology News(10 mins):Evolution of responses to (un)fairness 2Evolution of responses to (un)fairness 3Tree rings and arroyos 2Tree rings and arroyos 3Tree rings and arroyos 4Tree rings and arroyos 5Tree rings and arroyos 6Tree rings and arroyos 7Microplastic pollution discovered in St. Lawrence River sediments 2
... Oct. 12 Stayhealthy, Inc. an innovative, privately ... measurement, announced that it will join Hooper Holmes ... prevention and chronic care management October 13-15 to ... decision makers. Earlier this year, Stayhealthy announced the ...
... countries now acknowledge the need to obtain their energy ... will explain how his team have developed a new ... as 25 wind turbines. These reactors use a consortium ... crops to produce biogas (a mixture of methane and ...
... maintain bumblebee populations by growing plants with red flowers or ... of the common snapdragon, Antirrhinum majus , at the ... important pollinators of crops as well as the plants in ... BBSRC, is committed to research that can benefit agriculture and ...
Cached Biology News:Stayhealthy® Joins Hooper Holmes to Provide Complimentary Web-Based Biometric Screenings to All Participants at Care Continuum Alliance Conference 2Stayhealthy® Joins Hooper Holmes to Provide Complimentary Web-Based Biometric Screenings to All Participants at Care Continuum Alliance Conference 3Stayhealthy® Joins Hooper Holmes to Provide Complimentary Web-Based Biometric Screenings to All Participants at Care Continuum Alliance Conference 4Microscopic solutions to world's biggest problems 2Landing lights for bumblebees 2
(Date:9/19/2014)... SPRINGS, Florida , September 19, 2014 ... companies release latest developments, patents and results of studies ... GNSZ), Eli Lilly and Company (NYSE: LLY ... Celgene Corporation (NASDAQ: CELG ) and Arena ... GNSZ), a leader in developing prodrug therapeutics for the ...
(Date:9/19/2014)... 2014 , The first grants ... Paediatric Endocrinology (ESPE) Meeting  Investment supports innovative ... in the field of growth  , EMD ... Germany , today announced the first recipients of ... awards were announced during a Satellite Symposium organized by ...
(Date:9/18/2014)... LONDON , Sept. 18, 2014 ... near-patient testing, is performed outside a clinical laboratory. ... hence in administrating appropriate treatments and medication. POCT ... and prevalence of lifestyle diseases such as diabetes, ... and user-friendly. POCT devices are standardized to minimize ...
(Date:9/18/2014)... DUBLIN, Ireland , September 18, ... ,Research and Markets ( http://www.researchandmarkets.com/research/czvg3s/biocompatible ) ... "Biocompatible Materials - Global Strategic ... offering. ,     (Logo: http://photos.prnewswire.com/prnh/20130307/600769) ,This report ... Materials in US$ Million by the ...
Breaking Biology Technology:Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 2Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 3Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 4Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 5Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 6Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 7EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 3POCT Market in China 2014-2018 2Biocompatible Materials - Global Strategic Business Report 2014 2Biocompatible Materials - Global Strategic Business Report 2014 3
... CITY, April 30 /PRNewswire-FirstCall/ - AEterna Zentaris Inc. (NASDAQ: ... company focused on endocrine therapy and oncology, will announce ... market open on Wednesday, May 6, 2009. The Company ... these results later that same day at 3:30 p.m., ...
... April 30 Medarex, Inc. (Nasdaq: MEDX ) ... 31, 2009. Medarex,s net loss for the quarter ended March ... the same period in 2008, Medarex,s net income of $103.3 ... million, or $1.19 per share, from the sale of 2.5 ...
... of its fifth Best Practices Awards program. Grand Prize winners ... Broad Institute of MIT and Harvard, Genedata, Genentech, GlaxoSmithKline, Merck & ... Research. , ... Needham, Mass (PRWEB) April 29, 2009 ...
Cached Biology Technology:Medarex Announces 2009 First Quarter Financial Results 2Medarex Announces 2009 First Quarter Financial Results 3Medarex Announces 2009 First Quarter Financial Results 4Medarex Announces 2009 First Quarter Financial Results 5Medarex Announces 2009 First Quarter Financial Results 6Medarex Announces 2009 First Quarter Financial Results 7Medarex Announces 2009 First Quarter Financial Results 8Medarex Announces 2009 First Quarter Financial Results 9Bio-IT World Announces the Winners of its 2009 Best Practices Awards Program 2Bio-IT World Announces the Winners of its 2009 Best Practices Awards Program 3Bio-IT World Announces the Winners of its 2009 Best Practices Awards Program 4Bio-IT World Announces the Winners of its 2009 Best Practices Awards Program 5Bio-IT World Announces the Winners of its 2009 Best Practices Awards Program 6
...
Human Presenilin-2 NTF Affinity Purified Polyclonal Ab...
2'-Fluorine-CTP (2'-F-CTP) is readily incorporated into transcripts by T7 and SP6 R&DNA™ Polymerase and is available separately....
Human Glypican 2 Biotinylated Affinity Purified PAb...
Biology Products: