Navigation Links
Estrogen linked to lowered immunity in fish
Date:6/3/2009

Exposure to estrogen reduces production of immune-related proteins in fish. This suggests that certain compounds, known as endocrine disruptors, may make fish more susceptible to disease.

The research may provide new clues for why intersex fish, fish kills and fish lesions often occur together in the Shenandoah and Potomac rivers. The tests were conducted in a lab by scientists from the U.S. Geological Survey.

The study, led by USGS genomics researcher Dr. Laura Robertson, revealed that largemouth bass injected with estrogen produced lowered levels of hepcidin, an important iron-regulating hormone in mammals that is also found in fish and amphibians. This is the first published study demonstrating control of hepcidin by estrogen in any animal.

Besides being an important iron-regulating hormone, researchers also suspect that hepcidin may act as an antimicrobial peptide in mammals, fish and frogs. Antimicrobial peptides are the first line of defense against disease-causing bacteria and some fungi and viruses in vertebrate animals.

"Our research suggests that estrogen-mimicking compounds may make fish more susceptible to disease by blocking production of hepcidin and other immune-related proteins that help protect fish against disease-causing bacteria," said Robertson.

USGS researchers Drs. Vicki Blazer and Luke Iwanowicz have previously found intersex occurring in fish in the Potomac and Shenandoah rivers. Intersex is primarily revealed in male fish that have immature female egg cells in their testes. Because other studies have shown that estrogen and estrogen-mimicking compounds can cause intersex, the co-occurrence of fish lesions, fish kills and intersex in these two rivers suggested to USGS scientists that estrogen-mimicking compounds could be involved in the fish lesions and fish kills in addition to being a possible cause of intersex traits.

That caused Robertson and her colleagues to investigate
'/>"/>

Contact: Laura Robertson
lrobertson@usgs.gov
304-724-4579
United States Geological Survey
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Estrogen May Help Mens Hearts
2. Penn State professor investigates estrogen, heart disease connection in women
3. Estrogen May Combat Marijuanas Effect on Cognition
4. New study suggests Rx estrogen delivery through the skin may show safety benefits as opposed to oral delivery
5. Naturally produced estrogen may protect women from Parkinsons disease
6. Estrogen found to increase growth of the most common childhood brain tumor
7. Estrogen pills can benefit women with metastatic breast cancer
8. FDA Approves Durameds Synthetic Conjugated Estrogens-A Vaginal Cream
9. Estrogen therapy could be dangerous for women with existing heart risk
10. Estrogen May Explain Why Women With Cystic Fibrosis Suffer More
11. Estrogen and progesterone receptor isoforms expression in the stomach of Mongolian gerbils
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2015)... ... July 31, 2015 , ... Eldermark ... for LeadingAge’s Center for Aging Services Technologies (CAST) Medication Management Technologies whitepaper. The ... post-acute care providers understand the benefits of using medication management technologies . ...
(Date:7/31/2015)... ... July 31, 2015 , ... ... Hospital's Karmanos Center for Natural Birth . The Karmanos Center for ... safe natural childbirth experience. With nurses and caregivers that are trained in holistic ...
(Date:7/31/2015)... ... July 31, 2015 , ... New Energy Works Timberframers ... Amphitheater in McMinnville, Oregon August 15th, 2015 from 9am – 12pm. Timber frame ... important day for the entire community as the culmination of months of effort, planning, ...
(Date:7/31/2015)... ... July 31, 2015 , ... An article entitled ... talked about a woman’s unfortunate experience having cosmetic skin procedures done by a ... resulted in blistering, swelling, bruising, and pain. This woman’s experience is only one ...
(Date:7/31/2015)... ... July 31, 2015 , ... In the most recent testosterone ... in the Northern District of Illinois, Androgel testosterone attorneys report that a “Mini Status ... entry was made recording the minutes of the status conference, which was held that ...
Breaking Medicine News(10 mins):Health News:LeadingAge Selects Eldermark Case Study to Highlight Medication Error Reduction Results 2Health News:LeadingAge Selects Eldermark Case Study to Highlight Medication Error Reduction Results 3Health News:Timber Frame Raising: Granary District Stage Amphitheater Timber Frame Hand-Raising by New Energy Works Timberframers 2Health News:Timber Frame Raising: Granary District Stage Amphitheater Timber Frame Hand-Raising by New Energy Works Timberframers 3Health News:Dermatologists Discuss Rise in Unqualified Practitioners of Cosmetic Dermatology 2Health News:Dermatologists Discuss Rise in Unqualified Practitioners of Cosmetic Dermatology 3Health News:Testosterone Lawsuit News: Androgel Lawsuit Conference Held 2Health News:Testosterone Lawsuit News: Androgel Lawsuit Conference Held 3Health News:Testosterone Lawsuit News: Androgel Lawsuit Conference Held 4
... Joins Thousands of Participants in Inspirational Closing Ceremony; ... Breast Cancer Organizations, WASHINGTON, May 4 ... Reese Witherspoon was a special guest at the,sixth ... this weekend,cheering on and joining walkers on their ...
... to an expanding waist line, weight gain and a tendency ... of a study published today in the journal Nature Genetics. ... is significantly more common in those with Indian Asian than ... Heart Foundation, could lead to better ways of treating obesity. ...
... knowledge gap, experts say , , SUNDAY, May 4 (HealthDay ... surprisingly low knowledge of child development, including basic concepts ... should act, a new study finds. , For instance, ... 1-year-olds can,t tell the difference between right and wrong, ...
... Study shows only 49% intended to do so if child ... News) -- New research shows that only half of American ... papillomavirus (HPV) if the girls are under the age of ... which is sexually transmitted, is the primary cause of cervical ...
... assumptions, children are more vulnerable to the harmful effects ... they are in early childhood, according to a Cincinnati ... 4 at the annual meeting of the Pediatric Academic ... protecting toddlers from lead exposure, our study shows that ...
... U.S. parents have a surprisingly low-level knowledge of ... childs physical, social and emotional growth, according research ... which suggest that such false parenting assumptions can ... kids of much-needed cognitive stimulation, will be presented ...
Cached Medicine News:Health News:Reese Witherspoon Helps Celebrate Avon Walk for Breast Cancer Washington, D.C. - Weekend-Long Event Raises $8.1 Million 2Health News:Reese Witherspoon Helps Celebrate Avon Walk for Breast Cancer Washington, D.C. - Weekend-Long Event Raises $8.1 Million 3Health News:Reese Witherspoon Helps Celebrate Avon Walk for Breast Cancer Washington, D.C. - Weekend-Long Event Raises $8.1 Million 4Health News:Reese Witherspoon Helps Celebrate Avon Walk for Breast Cancer Washington, D.C. - Weekend-Long Event Raises $8.1 Million 5Health News:Reese Witherspoon Helps Celebrate Avon Walk for Breast Cancer Washington, D.C. - Weekend-Long Event Raises $8.1 Million 6Health News:Gene sequence that can make half of us fatter is discovered 2Health News:One-Third of Parents Lack Facts About Child Development 2Health News:One-Third of Parents Lack Facts About Child Development 3Health News:Many Moms Unwilling to Have Younger Daughters Get HPV Vaccine 2Health News:Many Moms Unwilling to Have Younger Daughters Get HPV Vaccine 3Health News:Children more vulnerable to harmful effects of lead 2Health News:Nearly one-third of US parents don't know what to expect of infants 2
(Date:7/31/2015)... 31, 2015 Magnaquest, a ... data and cloud computing operators has signed a ... giant for Internet of Things (IoT) related initiative. ... on subscription model.      (Logo: ... striving for business innovations to make healthcare services ...
(Date:7/30/2015)... VIEW, Calif. , July 30, 2015 ... it will release its second quarter 2015 financial results ... 2015.   In conjunction with the release, the Company ... at 5:00 p.m. Eastern Time on ... of the quarter and other business developments. ...
(Date:7/30/2015)... edition of #MedicareMonday on Medicare,s 50 th anniversary. As Medicare celebrates 50 years, ... the success of the prescription drug benefit, commonly referred to as Part D. ... videos here: http://onphr.ma/1INp9qQ ... ... More ...
Breaking Medicine Technology:Magnaquest Signs a POC With a Leading Pharma Giant in Europe to Manage Subscription Management and Billing for Internet of Things (IoT) 2IRIDEX Announces Second Quarter 2015 Conference Call and Release Date 2Happy 50th Anniversary Medicare! 2Happy 50th Anniversary Medicare! 3
... in Combination with Chemotherapy, FREMONT, Calif. ... pharmaceutical company discovering and developing novel,RNA interference ... Research published results on efficacy of siRNA ... lung cancer (NSCLC) in,the edition dated October ...
... Pivotal Data Show Prophylaxis Treatment with Kogenate FS ... in Children with No Pre-Existing,Joint Damage, BERKELEY, ... that the U.S. Food and Drug Administration (FDA) ... to reduce the frequency of bleeding episodes and ...
Cached Medicine Technology:Quark Pharmaceuticals Announces Publication of Study on Use of siRNA against Proprietary Target for Inhibiting Tumor Growth and Sensitization of Cancer Cells to Chemotherapy 2Quark Pharmaceuticals Announces Publication of Study on Use of siRNA against Proprietary Target for Inhibiting Tumor Growth and Sensitization of Cancer Cells to Chemotherapy 3Quark Pharmaceuticals Announces Publication of Study on Use of siRNA against Proprietary Target for Inhibiting Tumor Growth and Sensitization of Cancer Cells to Chemotherapy 4FDA Approves Bayer HealthCare's Kogenate(R) FS Treatment for Routine Prophylaxis in Children with Hemophilia A 2FDA Approves Bayer HealthCare's Kogenate(R) FS Treatment for Routine Prophylaxis in Children with Hemophilia A 3FDA Approves Bayer HealthCare's Kogenate(R) FS Treatment for Routine Prophylaxis in Children with Hemophilia A 4FDA Approves Bayer HealthCare's Kogenate(R) FS Treatment for Routine Prophylaxis in Children with Hemophilia A 5
Khosla Precision and Quality in Medical and Surgical Products....
Khosla Precision and Quality in Medical and Surgical Products....
Khosla Precision and Quality in Medical and Surgical Products....
Manual Table For Slit Lamp...
Medicine Products: