Navigation Links
Mercury pollution causes immune damage to harbor seals
Date:10/20/2008

Methylmercury (MeHg), the predominant form of mercury found in the blood of marine mammals and fish-eating communities, could be more damaging to seals than has previously been thought. Research published in BioMed Central's open access journal Environmental Health shows that MeHg harms T-lymphocytes, key cells in a seal's immune system. Similar results were also found for human lymphocytes.

Mercury exposure is known to occur as a result of man-made pollution and natural events such as volcanic eruptions. According to the lead author of this study, Krishna Das of the Universit de Lige, Belgium, "Mercury is known to bioaccumulate and to magnify in marine mammals, which is a cause of great concern in terms of their general health. In particular, the immune system is known to be susceptible to long-term mercury exposure". In order to determine the scale of this problem, the authors carried out analysis of the blood mercury levels of harbour seals caught in the North Sea and tested the effects of MeHg in lab experiments.

By applying increasing doses of MeHg to lymphocytes, a type of white blood cell, the authors determined that the amount of mercury found in the blood of the seals studied was enough to cause damage to the important immune system cells. They said, "Although the in vitro approach utilised in this investigation represents an extreme reductionism relative to the complex situation in the intact organism, it provides an insight into the specific effects of mercury pollution."

Immune system damage may already have taken a toll on the population of harbour seals. The 1998 and 2002 outbreaks of phocine distemper virus, known to have killed thousands of seals, were linked to the deleterious effects of pollution on the seals' ability to fight the infection.


'/>"/>

Contact: Graeme Baldwin
graeme.baldwin@biomedcentral.com
44-020-707-94804
BioMed Central
Source:Eurekalert

Page: 1

Related biology news :

1. International team shows mercury concentrations in fish respond quickly to increased deposition
2. Groundbreaking Canada-US study proves link between emissions and mercury pollution in fish
3. New study shows fish respond quickly to changes in mercury deposition
4. New study shows fish respond quickly to changes in mercury deposition
5. International team shows mercury concentrations in fish respond quickly to increased deposition
6. Groundbreaking Canada-US study proves link between emissions and mercury pollution in fish
7. Waterborne carbon increases threat of environmental mercury
8. Dartmouth researchers alarmed by levels of mercury and arsenic in Chinese freshwater ecosystem
9. Washington University, 2 industries, team to clean up mercury emissions
10. Dental chair a possible source of neurotoxic mercury waste
11. Study shows mercury levels from products decreasing, though still at dangerous levels
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/25/2015)... 2015  ABC Financial Services (ABC), the leading ... and Fitness Industry, today announced enhancements to their ... latest upgrade includes advances to the agreement section ... via Identity One fingerprint biometrics. The features will ... displays at the International Health, Racquet & Sportsclub ...
(Date:2/24/2015)... , Feb. 24, 2015 This report analyzes the ... provides separate comprehensive analytics for the US, Canada ... , Asia-Pacific , Middle ... Annual estimates and forecasts are provided for the period 2013 ... these markets. Market data and analytics are derived from primary ...
(Date:2/24/2015)... , Feb. 24, 2015 This report analyzes the worldwide ... following Segments: Face Biometrics, and Voice Biometrics. The report provides separate ... Japan , Europe , ... Africa , and Latin America . ... 2020. Also, a seven-year historic analysis is provided for these markets. ...
Breaking Biology News(10 mins):ABC Financial Unveils New Software Enhancements 2ABC Financial Unveils New Software Enhancements 3World Iris Biometrics Industry 2World Iris Biometrics Industry 3World Iris Biometrics Industry 4World Iris Biometrics Industry 5World Iris Biometrics Industry 6World Iris Biometrics Industry 7World Iris Biometrics Industry 8World Iris Biometrics Industry 9World Iris Biometrics Industry 10World Iris Biometrics Industry 11World Face and Voice Biometrics Industry 2World Face and Voice Biometrics Industry 3World Face and Voice Biometrics Industry 4World Face and Voice Biometrics Industry 5World Face and Voice Biometrics Industry 6World Face and Voice Biometrics Industry 7World Face and Voice Biometrics Industry 8World Face and Voice Biometrics Industry 9World Face and Voice Biometrics Industry 10World Face and Voice Biometrics Industry 11World Face and Voice Biometrics Industry 12World Face and Voice Biometrics Industry 13World Face and Voice Biometrics Industry 14World Face and Voice Biometrics Industry 15World Face and Voice Biometrics Industry 16
... F1000,s new Open Science publishing program for life scientists, ... and fast peer review post-publication; and full data deposition ... the scientific community during its six-month beta testing phase, ... a new custom-built site, and takes on a stronger ...
... fireflies has inspired scientists to modify a light-emitting diode ... half times as efficient as the original. Researchers from ... firefly lanterns, the organs on the bioluminescent insects, abdomens ... unexpected pattern of jagged scales that enhanced the lanterns, ...
... strong or heat-resistant will survive. A study published ... opens a window into a genetic process that allows ... a key to species survival for organisms around the world. ... climate change and map them, then we can protect them," ...
Cached Biology News:Scientists mimic fireflies to make brighter LEDs 2Scientists mimic fireflies to make brighter LEDs 3Heat-resistant corals provide clues to climate change survival 2
(Date:2/26/2015)... 2015  Spark Therapeutics (NASDAQ: ONCE ) ... participate in the Cowen and Company Health Care Conference ... at the Boston Marriott Copley Place. To ... from the Cowen conference, please visit the "Upcoming Events" ... Spark Therapeutics website at www.sparktx.com .  A replay ...
(Date:2/26/2015)... 26, 2015 Phosphate Therapeutics, ... the first pivotal trial of PT20 in subjects ... disease (DD-CKD), has completed as the pre-specified number ... invented by leading UK-based scientists from the Medical ... is a novel phosphate binder that is based ...
(Date:2/25/2015)... Cord Blood Corporation (NYSE: CO ) ("CCBC" ... collection, laboratory testing, hematopoietic stem cell processing and stem ... results for the third quarter and first nine months ... Third Quarter of Fiscal 2015 Highlights , Revenues ... 10.7% to RMB166.7 million ($26.9 million) from RMB150.6 ...
(Date:2/25/2015)... York, NY (PRWEB) February 25, 2015 ... Long-Awaited Realityā€¯ conference will take place on ... of Medicine in New York City. This single-day ... leaders, key investors, and other stakeholders to discuss ... the field of cancer immunotherapy. The conference format ...
Breaking Biology Technology:Spark Therapeutics to Participate in the 35th Annual Cowen and Company Health Care Conference 2Phosphate Therapeutics Announces Completion of Subject Recruitment Into the PEACH Pivotal Phase 2 Study of its Novel Phosphate Binder (PT20) for the Treatment of Hyperphosphataemia 2Phosphate Therapeutics Announces Completion of Subject Recruitment Into the PEACH Pivotal Phase 2 Study of its Novel Phosphate Binder (PT20) for the Treatment of Hyperphosphataemia 3China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 2China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 3China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 4China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 5China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 6China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 7China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 8China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 9China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 10China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 11China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 12China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 13China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 14China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 15China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 16China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 17China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 18China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 19China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 20China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 21China Cord Blood Corporation Reports Financial Results for the Third Quarter and First Nine Months of Fiscal 2015 225th Annual "Cancer Immunotherapy: A Long- Awaited Reality" Conference Taking Place March 26, 2015 in New York City 25th Annual "Cancer Immunotherapy: A Long- Awaited Reality" Conference Taking Place March 26, 2015 in New York City 3
... has long offered specialized tax credits to expand or ... aimed at leveraging seed capital for the states technology ... tax-credit package that passed the Legislature this spring and ... this summer, will provide a welcome step in a ...
... police officer at Midway Airport riding a Segway ... most gruff and serious expression on his face (all the better ... the officer but anyone looks idiotic riding a Segway at four ... that matter). , ,Maybe it was the same way when ...
... adhering to spots on a plastic slide. Source: ... Wis. Five small business innovation research (SBIR) grants ... BioSurfaces, Inc. this year by the National Institutes of ... Tuesday. , ,This is a cash infusion to do ...
Cached Biology Technology:State investment incentives aimed at luring angels to start-up companies 2Six signs you may be taking yourself too seriously at work 2Six signs you may be taking yourself too seriously at work 3Six signs you may be taking yourself too seriously at work 4GenTel claims $900,000 in federal grants this year for biochip research 2
... Chemicon Select Tissue Arrays are intended ... individual tissues were fixed in neutral buffered ... identification and diagnosis was performed by certified ... their paraffin blocks and relocated into a ...
... Young rabbit blood (New Zealand White or ... sex) is refrigerated within 6 hours of ... at -20ºC. The serum is then thawed ... standard in-house protocol, filtered through a 0.22 ...
... imaging system from Molecular Devices ... system for automated acquisition and analysis ... screening. ImageXpressULTRA is powered by ... screening acquisition, image storage and analysis. ...
... Competent Cell Sets Sets of pET ... The most common method for ... is to use chemically competent cells. ... the laboratory, greater efficiency, reproducibility and convenience ...
Biology Products: