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:11/6/2014)... metastasis, yet progress in preventing and treating migratory ... particularly challenging to design drugs that work against ... biology at Harvard Medical School. , "Unfortunately, ... metastasized." , Gujral and colleagues have now identified ... understand how metastasis begins. Their findings may also ...
(Date:11/6/2014)... 6, 2014 - Insilico Medicine, Inc, a Baltimore-based ... age related diseases announced a research collaboration with ... Champions Oncology, Inc (OTC: CSBR). , "There are ... medicine, but Champions Oncology,s TumorGraft technology is unique ... chemotherapy regimen experimentally generating vast amounts of valuable ...
(Date:11/5/2014)... career to understanding the Earth,s climate and communicating ... deputy director and regional climatologist for the Western ... Redmond has more than three decades of experience ... data to the general public. , At its ... December 15-19, 2014 the American Geophysical Union (AGU) ...
Breaking Biology News(10 mins):Migration negation 2Migration negation 3Insilico Medicine, Inc announces research collaboration with Champions Oncology, Inc 2Nevada climatologist to be honored at AGU Fall Meeting for lifetime of public outreach 2
... Duchenne muscular dystrophy (DMD) face a future of rapidly weakening ... failure before their 30th birthday. While researchers are hopeful that ... have targeted the heart of the problem as much as ... grant he received from the National Institutes of Health will ...
... of toxicity in the four hemophilia B patients enrolled to ... development at St. Jude Children,s Research Hospital and UCL (University ... This trial was designed primarily as a safety test, with ... little detectable Factor IX. The Factor IX protein helps the ...
... LLC, the image analysis and pattern recognition technology ... was awarded best performance for forensic signature verification ... Handwriting Recognition (ICFHR2010) in Kolkata, India, held November ... participants representing a total of 10 offline signature ...
Cached Biology News:New NIH grant helps MU scientist get to the heart of muscular dystrophy 2Early safety results promising for Phase I/II trial of gene therapy treatment of hemophilia B 2Parascript SignatureXpert Wins Forensic Signature Verification Competition 2
(Date:11/24/2014)... , Nov. 24, 2014   Veracyte, Inc. ... H. Anderson , president and chief executive officer, will present ... th Annual Healthcare Conference on Tuesday, December 2, 2014 ... . The live audio webcast and subsequent replay ... . Please connect to the website at least 15 minutes ...
(Date:11/24/2014)... 2014 Deep Research Report on ... professional and in-depth research report on the Adipic ... its definition, classification, application, and industry chain structure ... the international market analysis, including China’s domestic market ... Europe, Asia, China, Japan etc. regions) industry analysis ...
(Date:11/24/2014)... -- Senior Vice President, General Manager for ... business acumen Elsevier , a world-leading ... services, congratulates Diane Bartoli , Senior Vice President ... Clinical Solutions, for being recognized in the 13 th ... of Profiles in Diversity Journal ® . ...
(Date:11/22/2014)... 2014 During his lifetime Richard L. ... to surround himself with great people and take risks ... friends often marveled at his extraordinarily courageous attitude when ... and -- even with his death impending—that’s how he ... that would ultimately take his life. , Carrying on ...
Breaking Biology Technology:Veracyte to Present at the Piper Jaffray 26th Annual Healthcare Conference 2Adipic Dihydrazide Industry 2019 Research Forecasts on Worldwide, China Regions Now Available at ReportsnReports.com 2Adipic Dihydrazide Industry 2019 Research Forecasts on Worldwide, China Regions Now Available at ReportsnReports.com 3Elsevier Clinical Solutions' Diane Bartoli Featured In Profiles in Diversity Journal's 13th Annual Women Worth Watching Issue 2Elsevier Clinical Solutions' Diane Bartoli Featured In Profiles in Diversity Journal's 13th Annual Women Worth Watching Issue 3Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 2Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 3
... to high quality, practice management and reimbursement content ... available through web-based delivery platform, DALLAS-FORT ... develops products and services to help accelerate,advancements in the ... in web-based delivery of healthcare,information, have joined forces to ...
... Aton Pharma, Inc., a,global specialty pharmaceutical ... an expanded, comprehensive distribution program that ... resources, for the,dry eye medication Lacrisert(R) ... unique preservative-free, once-daily*, sustained,release prescription insert ...
... the active elements in the next generation of electronic ... nanotubes within device architectures. Most of the approaches for ... applicable to discrete devices and are not readily scalable ... nanotube-based chips. Now, this seemingly intractable problem has been ...
Cached Biology Technology:Oncology Metrics and E-Expert Reimbursement Partners Announce Joint Marketing and Product Development Agreement 2Oncology Metrics and E-Expert Reimbursement Partners Announce Joint Marketing and Product Development Agreement 3Aton Pharma Introduces Expanded Distribution of Lacrisert(R) (hydroxypropyl cellulose ophthalmic insert) at Hawaiian Eye 2Aton Pharma Introduces Expanded Distribution of Lacrisert(R) (hydroxypropyl cellulose ophthalmic insert) at Hawaiian Eye 3Nanotubes go with the flow 2
Mouse Anti-human CD11b/Mac-1alpha, clone LM2/1, Monoclonal Antibody...
Mouse monoclonal [1-N-14] to Adenovirus Type 7 hexon C11 Immunogen: Purified Adenovirus type 7 Specificity: This antibody is specific for Adenovirus type 7 hexon C11....
... The epitope is specific for Kir2.1 ... other known protein.,SPECIES REACTIVITIES: The ... bovine, porcine and guinea pig. It ... mouse (17/19 residues) and chick (15/19 ...
Request Info...
Biology Products: