Navigation Links
Study links water pollution with declining male fertility
Date:1/18/2009

New research strengthens the link between water pollution and rising male fertility problems. The study, by Brunel University, the Universities of Exeter and Reading and the Centre for Ecology & Hydrology, shows for the first time how a group of testosterone-blocking chemicals is finding its way into UK rivers, affecting wildlife and potentially humans. The research was supported by the Natural Environment Research Council and is now published in the journal Environmental Health Perspectives.

The study identified a new group of chemicals that act as anti-androgens. This means that they inhibit the function of the male hormone, testosterone, reducing male fertility. Some of these are contained in medicines, including cancer treatments, pharmaceutical treatments, and pesticides used in agriculture. The research suggests that when they get into the water system, these chemicals may play a pivotal role in causing feminising effects in male fish.

Earlier research by Brunel University and the University of Exeter has shown how female sex hormones (estrogens), and chemicals that mimic estrogens, are leading to feminisation of male fish. Found in some industrial chemicals and the contraceptive pill, they enter rivers via sewage treatment works. This causes reproductive problems by reducing fish breeding capability and in some cases can lead to male fish changing sex.

Other studies have also suggested that there may be a link between this phenomenon and the increase in human male fertility problems caused by testicular dysgenesis syndrome. Until now, this link lacked credence because the list of suspects causing effects in fish was limited to estrogenic chemicals whilst testicular dysgenesis is known to be caused by exposure to a range of anti-androgens.

Lead author on the research paper, Dr Susan Jobling at Brunel Universitys Institute for the Environment, said: We have been working intensively in this field for over ten
'/>"/>

Contact: Sarah Hoyle
s.hoyle@exeter.ac.uk
44-013-922-62062
University of Exeter
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/23/2014)... in their mid-thirties and forties, face a devastating ... two decades. "Mutant" protein clusters, long blamed for ... the primary focus of therapies in development by ... Prof. Gerardo Lederkremer and Dr. Julia Leitman of ... Immunology, in collaboration with Prof. Ulrich Hartl of ...
(Date:4/23/2014)... Toronto Scarborough research shows that male black widow spiders ... a rare example of mate preference by male spiders. ... Emily MacLeod and Maydianne Andrade, a professor in UTSC,s ... studies and the wild that males overwhelmingly chose to ... black widows can tell whether a potential mate is ...
(Date:4/23/2014)... source of a unique rhythmic sound, recorded for decades ... the Antarctic minke whale ( Balaenoptera bonaerensis ). First ... who thought it sounded like a duck, the bio-duck ... Southern Ocean, but its source has remained a mystery, ... of researchers deployed acoustic tags on two Antarctic minke ...
Breaking Biology News(10 mins):On the defensive 2On the defensive 3Picky male black widow spiders prefer well-fed virgins 2Scientists identify source of mysterious sound in the Southern Ocean 2Scientists identify source of mysterious sound in the Southern Ocean 3
... have uncovered a dramatic new twist in the battle against ... itself immune to a key component of the only effective ... team of TB researchers at Leicester announced a new advance ... They isolated the molecular weapons of the bacterium and are ...
... spring arrives across the country, tourists returning to beaches will ... algae that make water unfit for swimming and pose risks ... realize is that the small streams running through their neighborhoods ... feeds the algae blooms. A new study published in ...
... RIDGE, Tenn., March 12, 2008 -- Noted green energy ... this years Global Venture Challenge, a business competition and ... Ridge National Laboratory. The focus of this years ... bioenergy, energy efficiency and power generation sectors. Sridhar, ...
Cached Biology News:Scientists discover how TB 'develops invincibility' against only available treatment 2From the backyard to the ocean: New study shows streams act as key nitrogen filters 2
(Date:1/14/2014)... 2014 iLab Solutions, the leader in core ... Director of Product Strategy. In this role, Michelle will work ... to guide in the development of iLab products. Her main ... possible benefit to the scientific community by offering the most ...
(Date:1/14/2014)...  RXi Pharmaceuticals Corporation (OTCQX: RXII), a biotechnology company ... addressing major unmet medical needs using RNA-targeted technologies, ... Allowance from the United States Patent and Trademark ... for the treatment of fibrosis. The patent covers ...
(Date:1/14/2014)... 14, 2014   Kinaxis ®, provider of RapidResponse ®, ... and operations planning ( S&OP ) service, is proud to ... which will be held at the Hilton San Diego Bayfront, ... customer Elisabeth Kaszas , Director of Supply Chain at ...
(Date:1/14/2014)... CA (PRWEB) January 14, 2014 Kerr Corporation, ... 10-minute video and additional how-to information about dual arch impressions ... Restorations with Dual Arch Impressions,” the blog entry serves up ... technique and houses a step-by-step demonstration by Dr. David Little ...
Breaking Biology Technology:iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
... hair-like blood vessels in the back of our eyes, researchers ... those that bring blood to the heart respond to air ... otherwise healthy people exposed to high levels of air pollution ... of heart disease. Previous studies linked pollution to heart ...
... An international team of researchers has succeeded in creating ... for the first time, allowing them to examine the ... the University of Leeds, the US Department of Energy,s ... Facilities Council,s Rutherford Appleton Laboratory say the breakthrough will ...
... Mass. -- Researchers at Tufts University School of Engineering have ... and two variations, using E. coli as the ... 24, 2010, issue of Chemistry and Biology, offers ... new drugs that will combat the growing incidence of antibiotic ...
Cached Biology Technology:Photos of tiny blood vessels in the eye link air pollution to heart disease 2Scientists create highly ordered artificial spin ice using nanotechnology 2Scientists create highly ordered artificial spin ice using nanotechnology 3Erythromycin A produced in E. coli for first time 2
Procollagen type I C-terminal propeptide (human, PICP)...
... in Early Drug Development with Imaging Mass ... drug compound localization data in early drug ... mass spectrometry service maps unlabeled ... so you can localize drugs and metabolites ...
... LC Sciences provides a unique new ... DNA synthesis serving diverse needs in genomics, ... applications. OligoMix is a MIXTURE of a ... sequences delivered in a single microtube. OligoMix ...
... is an automated, high-resolution protein analysis ... ProteomeLab family of products, the PA ... automated protein characterization solutions including molecular ... carbohydrate profiling and mechanisms to study ...
Biology Products: