Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Prozac exposure found to disrupt mussel reproduction

19.09.2006
Researchers from the National Institute of Standards and Technology (NIST) and North Carolina State University (NCSW) have demonstrated that a commonly prescribed antidepressant can interfere with the reproductive cycle of freshwater mussels--at least in a controlled setting.

The research, presented this week at the national meeting of the American Chemical Society*, was conducted to better understand the environmental impact of pharmaceuticals in waste water.

More and more studies are turning up evidence of common drugs and their breakdown products in the nation's waterways (see NIST Tech Beat, www.nist.gov/

public_affairs/techbeat/tb2005_1222.htm#drugs), raising concerns about potential health impacts for both humans and animals from low-level but continuous exposure to the chemicals. NIST and NCSU researchers at the Hollings Marine Laboratory (Charleston, S.C.) examined the effect of fluoxetine, a selective serotonin reuptake inhibitor (SSRI) on a native freshwater mussel (Elliptio complanata). Fluoxetine, sold under the trade name ProzacTM, is one of the most heavily prescribed antidepressants in the United States. In humans, it acts to increase the levels of serotonin at nerve synapses, relieving depression and associated illnesses. But for a number of aquatic species, serotonin moderates the reproductive system--and has been used to artificially induce spawning in bivalves.

At laboratory test concentrations, they found, fluoxetine caused female mussels carrying larvae to release them prematurely, and often, before they were viable, disrupting their reproductive cycle. Approximately 70 percent of the almost 300 species of North American freshwater mussels are considered vulnerable to extinction or already extinct.

The finding also raises questions about the effect of fluoxetine on other aquatic species that share similar endocrine mechanisms. The research team currently is gathering environmental samples from local waters and sediments to compare environmental concentrations with their findings.

Michael Baum | EurekAlert!
Further information:
http://www.nist.gov
http://www.nist.gov/public_affairs/techbeat/tb2005_1222.htm#drugs

Further reports about: Environmental Serotonin fluoxetine mussel reproductive

More articles from Life Sciences:

nachricht One step closer to reality
20.04.2018 | Max-Planck-Institut für Entwicklungsbiologie

nachricht The dark side of cichlid fish: from cannibal to caregiver
20.04.2018 | Veterinärmedizinische Universität Wien

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

Im Focus: Basel researchers succeed in cultivating cartilage from stem cells

Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.

Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...

Im Focus: Like a wedge in a hinge

Researchers lay groundwork to tailor drugs for new targets in cancer therapy

In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Magnetic nano-imaging on a table top

20.04.2018 | Physics and Astronomy

Start of work for the world's largest electric truck

20.04.2018 | Interdisciplinary Research

Atoms may hum a tune from grand cosmic symphony

20.04.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>