Navigation Links
Chemicals remaining after wastewater treatment change the gender of fish
Date:6/21/2010

her consumer products flushed down toilets and drains. The amount of estrogens in the sampled effluent was enough to explain the effects on the fish "downstream" from the treatment plantin the river below the plant, according to Norris. The researchers saw no signs of reproductive disruption in fish upstream.

Also, the investigators exposed adult male fathead minnows to wastewater effluent they diluted with water taken from upstream of the plant. After seven days' exposure to this water, the fish had suppressed male sex characteristics and greatly elevated levels of the protein vitellogenin. Female fish make vitellogenin under the influence of estrogens, and male fish produce very little of it, so elevated levels in males indicate estrogen exposure, Norris explained.

After the technology upgrade to the wastewater treatment plant in 2008, the effluent was considerably less estrogenic to the fish. After the treatment plant's upgrade, the minnows exhibited less intense loss of male sex characteristics, an initial analysis found. "It took 28 days to get a significant elevation in vitellogenin and then only in 100 percent effluent," Norris said. "However, these improvements seen in wildlife will not substantially lessen the risk to human health because drinking water is not the major source of estrogenic chemicals for people."


'/>"/>

Contact: Aaron Lohr
alohr@endo-society.org
240-482-1380
The Endocrine Society
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Chemicals that eased one environmental problem may worsen another
2. More Cancer-Causing Chemicals in U.S. Cigarettes
3. Better animal-free test for chemicals that can cause contact dermatitis
4. Prenatal Exposure to Chemicals Linked to Breast Cancer Risk
5. Natural Chemicals Act As Cancer Killers
6. Endocrine-disrupting chemicals pose cancer risk
7. Prenatal exposure to endocrine-disrupting chemicals linked to breast cancer
8. Selenium Helped Cells Reboot After Exposure to Cancer-Causing Chemicals
9. Two New Phytochemicals with Anti-Inflammatory Activity Found in Noni Fruit
10. Chemicals in Beauty Products Tied to Early Puberty in Girls
11. Exposure to 3 classes of common chemicals may affect female development
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/26/2014)... (PRWEB) November 26, 2014 Louisiana ... relief and specialists in minimally invasive spine surgery, ... Shamieh into the rapidly growing provider network of ... The addition coincides with the network’s continuing success ... treatment for Louisiana residents who are suffering from ...
(Date:11/26/2014)... 2014 Sonoran Vein and Endovascular ... the Distinguished Preceptorship Award from The American ... in the advancement of nurse practitioners. The Distinguished ... who had made a significant contribution toward increasing ... Association of Nurse Practitioners (AANP) is the largest ...
(Date:11/26/2014)... Nov. 25, 2014 (HealthDay News) -- Youngsters who enter ... new study suggests. Early puberty was linked with ... poor self-image and high anxiety levels, according to the ... such as conflict with family and peers, and having ... study found. Although the study found an association ...
(Date:11/26/2014)... 25, 2014 (HealthDay News) -- Teens prescribed anti-anxiety ... abuse those drugs than other teens, a new ... to conduct substance abuse assessments on teenagers before ... "Prescribers and parents don,t realize the abuse ... at the University of Michigan School of Nursing. ...
(Date:11/26/2014)... Exposure to peanut protein in household dust may increase ... skin condition eczema, a new study reveals. About ... are allergic to peanuts. And severe eczema in infants ... the researchers noted. The new study included 359 ... examined the amount of peanut protein the children were ...
Breaking Medicine News(10 mins):Health News:Louisiana Back Institute Welcomes Dr. K. Samer Shamieh into Medical Provider Network 2Health News:Sonoran Nurse Receives Distinguished Preceptorship Award from The American Association of Nurse Practitioners 2Health News:Early Puberty Linked to Increased Risk of Depression in Teens 2Health News:Teens Given Anxiety, Sleep Meds May Be at Risk for Drug Abuse 2Health News:Infants With Eczema May Be More Prone to Peanut Allergy: Study 2
... weight loss drugs are really safe, an analysis of previous ... was conducted. What// came to light was the lack of ... ,Two Canadian researchers, Raj Padwal and Sumit Majumdar of ... like sibutramine (Meridia), orlistat (Xenical) and rimonabant (Acomplia) are no ...
... new proposal released by Gov. Arnold Schwarzenegger recently, workers ... double benefit - to their// health and wealth. Employees ... be exempted from tax. ,The proposal is ... is reachable to the approximate 6.5 million Californians who ...
... towards understanding how the human brain learns to recognize ... of Technology, in 2003 launched a project to study ... Prakash" aims to study, identify and, treat, children who ... a lady born blind was studied by the professor, ...
... India plans to promote the development of public-private partnerships ... the National AIDS Control Programme (NACP-III) is likely to ... that approx. 80 per cent of the Indians seek ... per cent for inpatient care. ,A national ...
... diabetes mellitus (NODM) develops in certain patients following a liver ... to develop//, finds that all the risk factors can be ... tailored to the patient's risk ,They found the ... and hepatitis C infection (HCV) paired with the use of ...
... Prevention (CDC) Atlanta's Division of Tuberculosis Elimination feel that ... made TB tests mandatory for all foreign-born nationals, irrespective ... ,Tuberculosis can only be eradicated if all foreign-born ... treated for latent TB infection, they say. ...
Cached Medicine News:Health News:Latest Research on Visual Skills is an Eye Opener 2Health News:Risk Factors That Cause NODM After A Liver Transplant 2Health News:All Foreign-born Nationals In US To Be Tested For TB 2
(Date:11/24/2014)... , Nov. 24, 2014  Arena Pharmaceuticals, Inc. (NASDAQ: ... present a corporate overview and update at the Piper Jaffray ... 2014, at 8:30 a.m. Eastern Time (5:30 a.m. Pacific Time), ... York . A live audio webcast of ... of Arena,s website at www.arenapharm.com . A replay of ...
(Date:11/24/2014)... 24, 2014  Marta Rendon, MD, founder of the Rendon ... , FL and international key opinion leader in dermatology, was ... the United States to attend the international Aesthetic ... . Here, at this gathering of over 600 physicians ... facial plastic surgery experts from Asia ...
(Date:11/24/2014)... Nov. 24, 2014  Surgical Theater, LLC, announced today ... 24 th opening of Europe,s ... Nazionale "C. Besta." The SuRgical Planner (SRP) and the ... the event for their 3D navigation and augmented reality ... Bederson , Professor and Chair, Department of Neurosurgery at ...
Breaking Medicine Technology:Arena Pharmaceuticals to Present at Piper Jaffray 26th Annual Healthcare Conference 2Arena Pharmaceuticals to Present at Piper Jaffray 26th Annual Healthcare Conference 3Marta Rendon, MD Selected To Attend Prestigious, Global Aesthetic Experts Summit! 2Marta Rendon, MD Selected To Attend Prestigious, Global Aesthetic Experts Summit! 3Surgical Theater's Technology to be Showcased at the Opening of the Besta NeuroSim Center in Milan, Italy 2Surgical Theater's Technology to be Showcased at the Opening of the Besta NeuroSim Center in Milan, Italy 3
... NEW YORK, Dec. 6, 2010 Keryx Biopharmaceuticals, ... data presented for the first time at the ... Hematology showing promising clinical activity, safety and tolerability ... leukemia (CLL) and Hodgkin,s lymphoma (HL).  KRX-0401 (perifosine) ...
... L.P. unveiled an enhanced version of its popular educational ... easier for healthcare professionals, people with pain and their ... tools. For more than 17 years, the Partners Against ... the quality of pain management for individuals touched by ...
Cached Medicine Technology:Phase 2 Data Presented at the 52nd Annual Meeting of the American Society of Hematology Demonstrates Promising Efficacy of KRX-0401 (Perifosine) in the Treatment of Advanced Leukemia, Lymphoma and Multiple Myeloma 2Phase 2 Data Presented at the 52nd Annual Meeting of the American Society of Hematology Demonstrates Promising Efficacy of KRX-0401 (Perifosine) in the Treatment of Advanced Leukemia, Lymphoma and Multiple Myeloma 3Phase 2 Data Presented at the 52nd Annual Meeting of the American Society of Hematology Demonstrates Promising Efficacy of KRX-0401 (Perifosine) in the Treatment of Advanced Leukemia, Lymphoma and Multiple Myeloma 4Phase 2 Data Presented at the 52nd Annual Meeting of the American Society of Hematology Demonstrates Promising Efficacy of KRX-0401 (Perifosine) in the Treatment of Advanced Leukemia, Lymphoma and Multiple Myeloma 5Purdue Pharma L.P. Re-launches Partners Against Pain Website 2
Used to introduce balloon, diagnostic and guiding catheters, or other devices for intervention....
Used to introduce large devices for vascular intervention....
Used to introduce balloon, closed and non-tapered end catheters and other devices for intervention....
Used to introduce balloon, closed and non-tapered end catheters or other devices for intervention....
Medicine Products: