Navigation Links
Medicine residues may threaten fish reproduction
Date:4/5/2010

Researchers at Ume University and the Sahlgrenska Academy at the University of Gothenburg, Sweden, have discovered that traces of many medicines can be found in fish that have been swimming in treated waste water. One such medicine, the hormone levonorgestrel, was found in higher concentrations in the blood of fish than in women who take the contraceptive pill. Elevated levels of this hormone can lead to infertility in fish.

The study is published in the journal Environmental Science and Technology. The fish in the study were exposed to treated waste water from three sewage treatment works in Stockholm, Ume and Gothenburg. The study shows that levonorgestrel which is found in many contraceptive pills, including the morning-after pill can impact on the environment and constitutes a risk factor for the ability of fish to reproduce. Levonogestrel is designed to mimic the female sex hormone progesterone and is produced synthetically.

A study from Germany showed very recently that less than a billionth of a gram of levonorgestrel per litre inhibited the reproduction of fish in aquarium-based trials.
"We are finding these levels in treated waste water in Sweden," explains Jerker Fick at the Department of Chemistry at Ume University.

For around ten years it has been known that synthetic oestrogen from contraceptive pills can affect fish that live downstream from sewage treatment works. The new study shows that synthetic progesterone-like hormones in contraceptive pills also carry risks.

The fish in the study were exposed to undiluted waste water, whilst in the natural environment there tends to be a degree of dilution in watercourses. But the study pointed out that there are also watercourses with very little dilution, and probably treatment plants that filter out the hormone less effectively than those included in the study. These findings will help to improve our understanding of which substances need to be removed from waste water.

"If we know how our medicines affect the environment, we will be in a better position to choose environmentally friendly alternatives, though we must always put the health of patients first," says Joakim Larsson at the Sahlgrenska Academy, one of the researchers behind the study.


'/>"/>

Contact: Joakim Larsson
joakim.larsson@fysiologi.gu.se
46-317-863-589
University of Gothenburg
Source:Eurekalert

Related biology news :

1. New research seeks to enhance quality and security of wireless telemedicine
2. Penn Veterinary Medicine report new strategy to create genetically-modified animals
3. SNM applauds NAS study showing need to restore federal nuclear medicine research funding
4. Gene-targeting pioneer Mario Capecchi shares 2007 Nobel Prize in Medicine
5. Professor Sir Martin Evans wins Nobel Prize for Medicine
6. 3 Columbia University Medical Center faculty elected to Institute of Medicine
7. In the laboratory, green tea proves a powerful medicine against severe sepsis
8. Telemedicine: Health alert via satellite
9. Study of African traditional medicine will begin world-first clinical trial
10. CWRU School of Medicine has evidence vaccine against malaria will reduce disease
11. New clinical trial results show how personalized medicine will alter treatment of genetic disorders
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/31/2016)... 31, 2016  Genomics firm Nabsys has completed a ... Barrett Bready , M.D., who returned to the company ... technical leadership team, including Chief Technology Officer, John ... Steve Nurnberg and Vice President of Software and Informatics, ... Dr. Bready served as CEO of Nabsys ...
(Date:3/22/2016)... March 22, 2016 ... Sensors Market for Consumer Industry by Type (Image, ... Application (Communication & IT, Entertainment, Home Appliances, ... Forecast to 2022", published by MarketsandMarkets, the ... to reach USD 26.76 Billion by 2022, ...
(Date:3/18/2016)... --> --> ... & Unmanned Vehicles, Physical infrastructure and Perimeter Surveillance & Detection ... border security market and the continuing migration crisis in the ... has led visiongain to publish this unique report, ... defence & security companies in the border security ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... (PRWEB) , ... April 27, 2016 , ... ... Touch screen mobile devices with fingerprint recognition for secure access, voice recognition ... only a few ways consumers are interacting with biometrics technology today. But ...
(Date:4/27/2016)... ... 2016 , ... PathSensors, Inc., a leading environmental testing company, ... assist PathSensors in expanding the use of the company’s CANARY® technology in the ... for the detection of harmful pathogens, including a number of bacteria, viruses, toxins, ...
(Date:4/27/2016)... , April 27, 2016 ... research report with specific focus on US, EU, ... Japan , to the healthcare business intelligence ... library. Complete report on the Flow ... companies and supported with 282 tables and figures ...
(Date:4/26/2016)... , ... April 26, 2016 , ... Mr. Palmer created ... RPO, signing the first multi-million dollar, multi-year managed services contract in the U.S. intelligence ... Michael join our leadership team,” said John Younger, founder of Accolo. “We are ...
Breaking Biology Technology: