Navigation Links
Plastics chemical retards growth, function of adult reproductive cells
Date:7/8/2009

CHAMPAIGN, Ill. Bisphenol A, a chemical widely used in plastics and known to cause reproductive problems in the offspring of pregnant mice exposed to it, also has been found to retard the growth of follicles of adult mice and hinder their production of steroid hormones, researchers report.

Their study is the first to show that chronic exposure to low doses of BPA can impair the growth and function of adult reproductive cells. The researchers will describe their findings this month at the annual meeting of the Society for the Study of Reproduction.

A healthy, mature follicle, called an antral follicle, includes a single egg cell surrounded by layers of cells and fluid which support the egg and produce steroid hormones, said University of Illinois veterinary biosciences professor Jodi Flaws, who led the study with graduate student Jackye Peretz.

"These are the only follicles that are capable of ovulating and so if they don't grow properly they're not going to ovulate and there could be fertility issues," Flaws said. "These follicles also make sex steroid hormones, and so if they don't grow properly you're not going to get proper amounts of these hormones." Such hormones are essential for reproduction, she said, "but they're also required for healthy bones, a healthy heart and a healthy mood."

BPA is widely used in plastics and is a common component of food containers and baby bottles.

The chemical structure of BPA is similar to that of estradiol, a key steroid hormone, and it can bind to estrogen receptors on the surface of some cells. It is not known whether BPA blocks, or mimics or enhances estrogen's activity on these cells, Flaws said.

Human studies have found BPA in many tissues and fluids, including urine, blood, breast milk, the amniotic fluid of pregnant women and the antral fluid of mature follicles. A national survey conducted by the federal Centers for Disease Control and Prevention in 2003-2004 fou
'/>"/>

Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Green plastics could help reduce carbon footprint
2. Kalyon wins Society of Plastics Engineers 2008 Research Award
3. Plastics suspect in lobster illness
4. Protein fibrils as alternative plastics?
5. Boost for green plastics from plants
6. Simplifying manufacture of drugs, plastics earns UH chemist top honor
7. New way to make sensors that detect toxic chemicals
8. Scientists track chemical changes in cells as they endure extreme conditions
9. Chemicals in common consumer products may play a role in pre-term births
10. Kelvin Lee winner of Biochemical Engineering Journal Young Investigator Award
11. American Chemical Societys Weekly Presspac -- June 17, 2009
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Plastics chemical retards growth, function of adult reproductive cells
(Date:9/1/2014)... 1, 2014, 10:20 AM EDT) It may be ... foods over unhealthy higher-calorie foods, according to new research ... Research Center on Aging (USDA HNRCA) at Tufts University ... the journal Nutrition & Diabetes , a brain ... it is possible to reverse the addictive power of ...
(Date:9/1/2014)... ago, electron microscopy revealed the presence of tiny blob-like ... But scientists still don,t know what they do ... believed to be crucial to the life of a ... disease treatment., In the Journal of Cell Biology ... from various backgrounds, from biophysics to cell biology, to ...
(Date:9/1/2014)... Section of the XVIII International Botanical Congress took place ... held every six years and it is where the ... fungi and plants get together to debate and update ... This is the primary product of the meeting, the ... which was published in 2012. The other important product ...
Breaking Biology News(10 mins):Training your brain to prefer healthy foods 2Scientists call for investigation of mysterious cloud-like collections in cells 2Week-long meeting on naming algae, fungi, and plants recorded for posterity 2
... Works to Strengthen Security for Anyone with ... Sept. 17 Today a,Southwest Airlines pilot ... be screened by,the Transportation Security Administration (TSA) ... demonstration project called,SecureScreen will utilize biometrics to ...
... $24 million in federal funding to establish the University ... CEIN), which will help researchers design safer and more ... to be housed at the California NanoSystems Institute (CNSI) ... nanomaterials on life forms and the interactions of these ...
... Foundation (NSF) and the Environmental Protection Agency (EPA) have ... Implications of NanoTechnology (CEINT) to explore the potential ecological ... as a million times smaller than the head of ... objects made from the same material. These unusual properties ...
Cached Biology News:Southwest Pilots Launch TSA Demonstration Project to Test Biometric Screening 2UCLA, partners establish new center on environmental effects of nanotechnology 2UCLA, partners establish new center on environmental effects of nanotechnology 3UCLA, partners establish new center on environmental effects of nanotechnology 4Duke to lead new NSF, EPA center to study the environmental implications of nanotechnology 2Duke to lead new NSF, EPA center to study the environmental implications of nanotechnology 3
(Date:8/28/2014)... 28, 2014  Next month, executives from clinical trial marketing ... events beginning with Patient-Centered Clinical Trials 2014 , to ... Boston , September 4-5. Patient recruitment experts Bonnie ... Fleishman will share insights on the benefits of employing ... tactics – from media to mobile apps – can be ...
(Date:8/28/2014)... Sterlitech is proud to announce that ... stable of products . These additional products ... include membrane filters with surface charges. , ... for our membrane process testing equipment, and correspondingly, a ... membranes,” explains Sterlitech President Mark Spatz. “The addition ...
(Date:8/28/2014)... Exciting new work by a Florida State University research ... can take your temperature, emit white light, and convert ... molecule looks like a butterfly. , Biwu Ma, associate ... in the FAMU-FSU College of Engineering, created the molecule ... continued to discover that his creation has many other ...
(Date:8/28/2014)... Vt. (PRWEB) August 28, 2014 ... testing around the world is available from Strategic ... diagnostics companies. “ Industrial Microbiology Market Review, Fourth ... Industrial Market ” (IMMR—4) tracks and compares microbiology ... in North America, Europe and Asia, and forecasts ...
Breaking Biology Technology:BBK Worldwide Leads Sessions at Key September Events 2Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 3
... 29 Cadence Pharmaceuticals,Inc. (Nasdaq: CADX ... and commercializing proprietary product candidates principally,for use ... the company,s,President and CEO Theodore Schroeder will ... 6 at 1:30pm Eastern Time (10:30am Pacific ...
... U.S. Attorney,s, Office for Eastern District of Pennsylvania and ... Settles State Cases with Connecticut and ... (Nasdaq:,CEPH) announced today it has finalized a previously announced ... Eastern District of,Pennsylvania, the U.S. Department of Justice and ...
... Calif., Sept. 29 Poniard,Pharmaceuticals, Inc. (Nasdaq: PARD ... Jerry McMahon, Ph.D., chairman and CEO,will present at the ... 9 a.m. Eastern Time at Le Parker Meridien in ... overview, including a discussion,of the development of picoplatin, the ...
Cached Biology Technology:Cadence Pharmaceuticals' CEO Theodore Schroeder to Present at the JMP Securities Third Annual Healthcare Focus Conference 2Cephalon Concludes All Outstanding Federal and State Government Investigations into the Company's Sales and Promotional Practices 2Cephalon Concludes All Outstanding Federal and State Government Investigations into the Company's Sales and Promotional Practices 3Cephalon Concludes All Outstanding Federal and State Government Investigations into the Company's Sales and Promotional Practices 4Poniard Pharmaceuticals to Present at the JMP Securities Healthcare Focus Conference 2
Whole blood is collected from healthy pigs (mixed breed, either sex) at the time of slaughter, refrigerated within 6 hours, processed within 24 hours and frozen at -20ºC....
ANTI S. ENT TOX BC2D...
Human/Mouse/Rat Keap1 MAb (Clone 333116) Protein Family: Transcription Factor Regulators...
Reacts with MBP from human, bovine and rat, epitope 129-138. Reacts weakly with rabbit. Does not react with guinea pig....
Biology Products: