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:7/25/2014)... congenital central nervous system disease that is caused ... during the embryonic phase. Many patients have varying ... neurocognitive retardation. Such problems decrease the patients, functional ... Ankara Physical Medicine and Rehabilitation Education and Research ... with SB, using the Pediatric Evaluation of Disability ...
(Date:7/25/2014)... time, Spanish researchers have detected an unknown interaction between ... are introduced into a droplet of salt water and ... crystallisation to create biomineralogical biosaline 3D morphologically complex formations, ... bacteria are revived. The discovery was made by chance ... of the Astrobiology journal and may help ...
(Date:7/24/2014)... SAN DIEGO , July 24, 2014 /PRNewswire-iReach/ -- ... managing data from cardiac devices, has cut emergency room ... the UC San Diego (UCSD) Medical Center, according to ... Journal. The UCSD Emergency Departments are using the suite ... such as pacemakers or defibrillators. "Using Geneva,s ...
Breaking Biology News(10 mins):Bacteria manipulate salt to build shelters to hibernate 2UC San Diego Medical Center Cuts Average ER Wait Time by 92 Minutes using the Geneva Healthcare Suite 2UC San Diego Medical Center Cuts Average ER Wait Time by 92 Minutes using the Geneva Healthcare Suite 3
... Georgian town of Reepham in Norfolk are taking part in ... Anglia (UEA). Like two million homes across the ... warmth and hot water, and the aim of the UEA ... a viable option. The renewable fuel being used is ...
... a striking similarity between heart disease and Duchenne muscular ... that a new class of experimental drugs for heart ... At first glance, heart failure and the muscle-wasting ... usually before the age of 6, destroying their muscle ...
... GAITHERSBURG, Md.The bacterium behind one of mankind,s deadliest scourges, ... Institute of Standards and Technology (NIST) and the Department ... answering the decades-old question of what controls the switching ... of life,s functions. In a Journal of ...
Cached Biology News:Trailblazing rural community shows green heating oil a viable option 2While focusing on heart disease, researchers discover new tactic against fatal muscular dystrophy 2Long-sought protein structure may help reveal how 'gene switch' works 2Long-sought protein structure may help reveal how 'gene switch' works 3
(Date:7/24/2014)... Calif. , July 24, 2014  ECC West ... Denver, Colorado with University College Hospital (UCH) ... a development project to finance, design, construct, and operate ... Nigeria . Under the first of ... prepare scoping documents and funding applications. UCH Ibadan intends ...
(Date:7/24/2014)... of Engineering at the University of Delaware, is ... in energy engineering, environmental sustainability and electronics. , ... rock with a well-defined, crystalline structure. At the ... decided that zeolites can separate molecules with size ... (one-tenth of a nanometer), making them useful to ...
(Date:7/24/2014)... (PRWEB) July 24, 2014 Your ... advances in modeling lithium-ion battery storage capacity. , ... from a theoretical model created at Lawrence ... that predicts how carbon components will perform ... storage emphasizes the urgent need for higher-performance batteries. ...
(Date:7/24/2014)... 24, 2014 2014 Deep Research ... is a professional and in-depth research report on ... Sulphate basic information, including its definition, classification, ... This research covers the international market analysis, including ... analysis covering macroeconomic environment & economic situation analysis, ...
Breaking Biology Technology:ECC Signs a Contract for the Finance, Design, and Construction of a Premier Cancer Institute in Ibadan, Nigeria 2University of Delaware researcher describes new approach for creating organic zeolites 2Getting More Life out of Lithium-ion Batteries 2Potassium Sulphate Market & SHMP Industry 2014 (Global, China) Analysis Now Available at DeepResearchReports.com 2Potassium Sulphate Market & SHMP Industry 2014 (Global, China) Analysis Now Available at DeepResearchReports.com 3Potassium Sulphate Market & SHMP Industry 2014 (Global, China) Analysis Now Available at DeepResearchReports.com 4
... HARBIN, China, Feb. 24 /PRNewswire-Asia-FirstCall/ -- China ... or "the Company") (Nasdaq: CSKI ... over-the-counter,drugs in the People,s Republic of China ... Peng Lai Jin Chuang Pharmaceutical Company ("Jin,Chuang"), ...
... biotech company in Madison, Wisconsin is so concerned about ... that they have volunteered to give away free bottles ... the incoming administration who has forgotten to pay taxes ... government employees in positions of responsibility have many important ...
... -- Quarter Highlighted by Cinryze(TM) [C1 Inhibitor (human)] Commercial Launch ... VPHM ) reported today its financial results for the fourth ... 30, 2008 include:Operational: , , , ... Lev Pharmaceuticals, Inc. (Lev) in October 2008; , ...
Cached Biology Technology:China Sky One Medical, Inc. Signs Exclusive Distribution Agreement with Shaanxi Buchang Group for Naftopidil Dispersible Tablets 2China Sky One Medical, Inc. Signs Exclusive Distribution Agreement with Shaanxi Buchang Group for Naftopidil Dispersible Tablets 3Mental Stimulus Package: Government Officials who Forgot to Pay Taxes Will Receive Free Memory-boosting Supplement 2Mental Stimulus Package: Government Officials who Forgot to Pay Taxes Will Receive Free Memory-boosting Supplement 3ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 2ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 3ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 4ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 5ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 6ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 7ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 8ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 9ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 10ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 11ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 12
Mouse anti human pro-Relaxin-2...
Rabbit polyclonal to Dishevelled 2 ( Abpromise for all tested applications). entrezGeneID: 1856 SwissProtID: O14641...
... polyclonal to ErbB 2 - BSA ... for all tested applications). ... conjugated to KLH, corresponding to C ... c-ErbB2 Entrez GeneID: ...
Anti human PPAR gamma2 mouse monoclonal antibody...
Biology Products: