Navigation Links
Baylor study finds common fire retardant harmful to aquatic life
Date:5/24/2011

A new study by Baylor University environmental health researchers found that zebra fish exposed to several different technical mixtures of polybrominated diphenyl ethers (PBDEs) a common fire retardant during early development can cause developmental malformations, changes in behavior and death.

The study will appear in the June issue of the journal Environmental Toxicology and Chemistry and is the first to test multiple PBDE mixtures for changes in behavior, physical malformations and mortality on zebra fish.

PBDEs are found in many common household products from blankets to couches to food wrappers. Lab tests have shown that PBDEs have been found in human breast milk and cord blood. Previous studies have showed children with high levels of PBDEs in their umbilical cord at birth scored lower on tests between one and six years of age. In 2006, the state of California started prohibiting the use of PBDEs.

The family of PBDEs consists of more than 200 possible substances, which are called congeners. Congeners are considered low if they average between 1 to 5 bromine atoms per molecule.

The Baylor researchers tested six PBDE congeners for developmental effects on embryonic zebra fish. Changes in behavior, physical malformations and mortality were recorded daily for seven days.

The results showed:

  • Lower brominated congeners were more toxic than higher brominated congeners.

  • Embryos were most sensitive to two particular types of PBDE exposures, the two lowest brominated congeners of the six tested. Both induced a curved body axis and eventually death.

  • In all, four of the six congeners tested caused developmental malformations, such as a curved body axis and pulmonary edema. Five of the six caused alterations in behaviors, such as decreased swimming rates and increased spontaneous movement in the embryo.

"While most PBDEs have either been banned or phased out throughout the world, it may be more beneficial to identify congeners of concern rather than replacing these compounds with chemicals of unknown biological interactions," said Dr. Erica Bruce, assistant professor of environmental science at Baylor who is an expert in environmental chemicals and their effects on public health. "Alterations in early behavior may potentially be due to disruption of thyroid hormones. Thyroid hormones play a vital role in the development of the cholinergic system and this study gives insight into biological interaction within a few hours of exposure. The observed hyperactivity may be due to overstimulation of the cholinergic system," Bruce said.


'/>"/>

Contact: Matt Pene
Matt_Pene@baylor.edu
254-710-4656
Baylor University
Source:Eurekalert

Related biology news :

1. Baylor researchers unravel mystery of DNA conformation
2. Happy guys finish last, says new study on sexual attractiveness
3. Genetic study clarifies evolutionary origin of elusive montane red fox
4. A study will enable the survival and growth of the 3 development phases of the European eel
5. 5 UH graduates receive NSF fellowships for further study
6. Study Shows Sutro Biopharmas Biochemical Protein Synthesis Technology Enables Rapid Production and Scale-Up of Biopharmaceuticals
7. New study predicts risk of wetland habitat loss in southern United States
8. Greenhouse ocean study offers warning for future
9. Rigorous study confirms video game playing increases food intake in teens
10. Study reveals need for personalized approach in treatment of AML
11. Study finds therapies using induced pluripotent stem cells could encounter immune rejection problems
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/24/2016)... , May 24, 2016 Ampronix facilitates superior patient care by providing unparalleled ... medical LCD display is the latest premium product recently added to the range of ... ... ... Sony 3d Imaging- LCD Medical Display- Ampronix News ...
(Date:5/16/2016)... May 16, 2016   EyeLock LLC , a ... the opening of an IoT Center of Excellence in ... expand the development of embedded iris biometric applications. ... of convenience and security with unmatched biometric accuracy, making ... aside from DNA. EyeLock,s platform uses video technology to ...
(Date:5/9/2016)... 2016 Elevay is currently known ... freedom for high net worth professionals seeking travel for ... connected world, there is still no substitute for a ... sealing your deal with a firm handshake. This is ... advantage of citizenship via investment programs like those offered ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... , June, 23, 2016  The Biodesign Challenge ... envision new ways to harness living systems and biotechnology, ... Art (MoMA) in New York City ... 130 participating students, showcased projects at MoMA,s Celeste Bartos ... Paola Antonelli , MoMA,s senior curator of architecture and ...
(Date:6/23/2016)... (PRWEB) , ... June 23, 2016 , ... STACS DNA ... Technical Leader at the Arkansas State Crime Laboratory, has joined STACS DNA as a ... STACS DNA team,” said Jocelyn Tremblay, President and COO of STACS DNA. “In further ...
(Date:6/23/2016)... 23, 2016  Blueprint Bio, a company dedicated to ... medical community, has closed its Series A funding round, ... "We have received a commitment from Forentis ... need to meet our current goals," stated Matthew ... runway to complete validation on the current projects in ...
(Date:6/23/2016)... CA (PRWEB) , ... June 23, 2016 , ... ... software, is exhibiting at the Pennsylvania Convention Center and will showcase its product’s ... conference. ClinCapture will also be presenting a scientific poster on Disrupting Clinical Trials ...
Breaking Biology Technology: