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:10/15/2014)... a non-traditional biophysics textbook and it describes how life ... of discovery into biological systems and provides an understanding ... is about how our genes make proteins that control ... cells in an organism. It quantifies the principles of ... be found on both large and small scales. The ...
(Date:10/15/2014)... , Oct. 15, 2014 NXT-ID, Inc. (NASDAQ: ... authentication company focused on the growing mobile commerce market releases photos ... in Times Square on Monday October 13 th . ... David Tunnel and angel investor Mr. Chad A. ... , CEO of NXT-ID thanked his investors and employees "for their ...
(Date:10/14/2014)... new study published in Cancer Research shows ... and colon cancers—can promote the development of skin cancers ... and survival of sun-damaged skin cells. , Previously considered ... proteins called sirtuins that help regulate genomic stability and ... SIRT6 helps repair DNA damage, which can lead to ...
Breaking Biology News(10 mins):New book about life as seen from physics 2Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 2Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 3Two-faced gene: SIRT6 prevents some cancers but promotes sun-induced skin cancer 2
... Whether it's rice farming or rice research, very few of ... career in an industry that has been a foundation of ... want their children to be rice farmers, and even fewer ... vital importance to the region. , However, an innovative ...
... sound like Saturday cartoons: a strong-boned rat that can't ... the real hero is citrus juice. , Orange and ... long considered an unavoidable aging disease in which bones ... by Texas A&M University's Vegetable and Fruit Improvement Center ...
... more than 25 million people in sub-Saharan Africa, according ... a vaccine against the virus have achieved limited success. ... infection found widely in that region of Africa ?chancroid ... of HIV as much as 10-fold? , That may ...
Cached Biology News:A rice future for Asia 2Orange, grapefruit juice for breakfast builds bones in rats 2Vaccine shown effective against chancroid 2Vaccine shown effective against chancroid 3
(Date:10/25/2014)... This research report “Biodegradable Plastics Market ... Regenerated Cellulose, PCL), by Application (Packaging, Fibers, Agriculture, ... 2019”, defines and segments the global biodegradable plastics ... global volume and value. , Browse 75 Market ... Slides and in-depth TOC on “Biodegradable Plastics Market ...
(Date:10/25/2014)... A new way to produce engineered skin ... skin grafting technologies, it also speeds up the healing ... in the October issue of STEM CELLS Translational Medicine, ... that result from severe burns and chronic wounds. , ... elements. These wounds heal by contraction, with epithelization (the ...
(Date:10/25/2014)... and NEW YORK , Oct. ... ACCPD), formerly Access Pharmaceuticals, Inc. (ACCP), a biopharmaceutical ... it has implemented a 1-for-50 reverse split of ... trading on Friday, October 24, 2014. PlasmaTech,s common ... new CUSIP number 72754H109 and temporary ticker symbol ...
(Date:10/25/2014)... , Oct 24, 2014 Research and ... "Epigenetics Market by Product , Research Area & by ... to their offering. In this report, ... of products, research areas, and end users. The product ... are enzymes, instruments & consumables, kits, and reagents. The ...
Breaking Biology Technology:Biodegradable Plastics Market Projected to $3,476.87 Million by 2019 - Report by MarketsandMarkets 2Biodegradable Plastics Market Projected to $3,476.87 Million by 2019 - Report by MarketsandMarkets 3Biodegradable Plastics Market Projected to $3,476.87 Million by 2019 - Report by MarketsandMarkets 4New engineering method shows promise for faster healing, more cosmetically appealing skin grafts 2New engineering method shows promise for faster healing, more cosmetically appealing skin grafts 3PlasmaTech Biopharmaceuticals, Inc. Announces Reverse Stock Split, Ticker Change and Launches New Corporate Website 2Global Epigenetics (VLA, WBA, NBA, RTA, Rotary-Wing Aircraft) Market - Forecast to 2019 2Global Epigenetics (VLA, WBA, NBA, RTA, Rotary-Wing Aircraft) Market - Forecast to 2019 3
... research on an ongoing basis is the most effective ... many companies, the benefits of conducting marketing research and ... be at odds: , ,Marketing research can be ... , ,The traditional solution to this quagmire is to ...
... traveled to an event in Madison, Wis. that was organized ... was designed to bring together three geographic locations of high-technology ... ePrairies third eXtreme Networking event (but the first ... a methodology for dating where men and women come together ...
... market has been steadily advancing. People are starting to feel ... in spite of the gnawing reality that far too many ... will never return. Some US pundits are saying in four ... big trouble, with huge raising deficits and the ever-increasing trade ...
Cached Biology Technology:Talking Bout My Generation: The Evolution of Online Marketing Research 2Talking Bout My Generation: The Evolution of Online Marketing Research 3Mike Rosen Reviews - eXtreme Networking in Madison 2Mike Rosen Reviews - eXtreme Networking in Madison 3The Next Economy - Market Collapses Drive Long-Term Growth 2
Phospho-Btk (Tyr223) Antibody...
...
... to Ki67 - Proliferation Marker, prediluted ... related nuclear protein, expressed by proliferating cells ... cycle (G1, S, G2 and M phase). ... Ki67 antibodies are useful in establishing the ...
Request Info...
Biology Products: