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:7/9/2014)... in which animals can be found, concern mounts over ... increased range for a host mean new territory for ... team of UC Santa Barbara scientists, including parasitologists Ryan ... the Journal of Biogeography , Hechinger, Kuris and ... happen: Hosts may actually lose their parasites when the ...
(Date:7/9/2014)... Tampa, Fla. (July 9, 2014) Emerging fungal ... any other parasitic group, causing population declines of ... from the University of South Florida published in ... amphibians can acquire behavioral or immunological resistance to ... population declines. , "Acquired resistance is important ...
(Date:7/9/2014)... critically ill children with traumatic injuries have identified ... likely to develop a hospital-acquired infection. The study, ... published online in June in the journal ... that could lead to the clinical implementation of ... or reverse immune system damage following critical illness ...
Breaking Biology News(10 mins):Not at home on the range 2Not at home on the range 3Not at home on the range 4USF study: Amphibians can acquire resistance to deadly fungus 2Immune function predicts infection risk among child trauma patients 2Immune function predicts infection risk among child trauma patients 3
... 2010) In the Opening Session of the American ... AAPS President Danny D. Shen, Ph.D., presented the following ... pharmaceutical sciences: Excellence in Ligand-Binding Assay Award ... ANP Technologies, Inc.: Ray Yin; Yli Vallejo; Jing Pan, ...
... what impatiens to plant in your yard, a recent study ... Cajun Carmine, that is if you want fewer insects in ... impatiens attract more thrips than others was one of the ... off by flowers are actually complex compounds known as plant ...
... has been constructed by researchers at the Virginia ... gamma-proteobacteria, a large group of medically and scientifically ... and other disease-causing organisms.* By building powerful phylogenetic ... and differences between the make-up of many different ...
Cached Biology News:AAPS announces 2010 NBC award winners 2When plants attract bugs, it may be their own fault 2When plants attract bugs, it may be their own fault 3New 'Tree of Life' established for one of the largest groups of bacteria 2New 'Tree of Life' established for one of the largest groups of bacteria 3
(Date:1/14/2014)... Carahsoft and CDS Federal Services have ... at 2pm EST (11am PST), “Natural Language Processing: Converting ... how technology can turn raw, heterogeneous data into actionable ... The online webinar will last approximately one hour. , ...
(Date:1/14/2014)... 14, 2014  3D Communications, a leading provider of strategic communications services ... media events in the United States and ... Virginia Cox , JD, is returning to the firm,s ... re-joins 3D after more than two years of service as Associate ...
(Date:1/14/2014)... EquitiesIQ, a leading informational research provider, ... is an emerging biomedical company acquiring, developing, manufacturing, and ... , Free report download: http://equitiesiq.com/reports/alliqua/ , In ... team and Board, which launched the company’s new strategy ...
(Date:1/14/2014)... and BETHESDA, Md. , Jan. 14, ... with two institutes from the National Institutes of Health ... bringing safer, more effective treatments to patients on a ... for Advancing Translational Sciences (NCATS) and the National Eye ...
Breaking Biology Technology:Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2Former FDA Associate Commissioner Returns To 3D Communications 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3
... New Haven, Conn. A study by Yale researchers offers ... among individuals suggesting that it is due less to ... that cause extended segments of the human genome to be ... focus for identifying genetic differences has traditionally been on point ...
... As the sizes of sensor networks and mobile devices ... a growing need for suitable power sources. Because even ... in nanoscale devices, scientists are exploring nanosize systems that ... the University of Illinois have shown that a single ...
... ST. LOUIS, Sept. 27 Sigma-Aldrich (Nasdaq:,SIAL) is ... been named the,Vice President of R&D for the ... this role, he will help expand Sigma-Aldrich,s,leadership position ... life science researchers. Sullivan has been involved with ...
Cached Biology Technology:Individual differences caused by shuffled chunks of DNA in the human genome 2Individual differences caused by shuffled chunks of DNA in the human genome 3Nanowire generates power by harvesting energy from the environment 2Sigma-Aldrich Names Patrick Sullivan New VP of Research and Development for Research Biotech 2
... its effects by binding ... a disulfide-linked heterotetrameric protein ... subunits and two Beta ... following configuration: Beta-Alpha-Alpha-Beta. ...
Excellent safety and durability., Remote control can be easily operated in your hand., Constant voltage control with 2 sets of terminals., Precise and durable circuit design. ...
... Dye runs faster than Bromophenol blue,or ... gels.,Orange G dye migrates with DNA ... migration at this size,prevents the obscuring ... the front of DNA migration.,The Orange ...
... Polyclonal Antibody Description: ... polyclonal antibody. Detects 70 kDa YAP ... blotting and immunohistochemistry. ... Storage: -20C ...
Biology Products: