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:9/15/2014)... that a single group of microorganisms may be responsible ... the oceans, with implications for the global carbon cycle ... essential molecule required by most life on this planet, ... of microorganisms because it is so large and complex. ... maintaining the brain and nervous systems, as well as ...
(Date:9/15/2014)... coral reef ecologists fears that reef biodiversity may not ... we once thought. , In an international study published ... Excellence for Coral Reef Studies (Coral CoE) says we ... within reef ecosystems. , In coral reefs, just as ... keep the ecosystem safe and functioning. , Professor ...
(Date:9/15/2014)... lifeplants and animalsto thrive in the oceans, there ... In certain coastal areas, extreme oxygen-starvation produces "dead ... web structure. As dissolved oxygen levels decline, energy ... microbial community metabolism resulting in impacts on the ... the past 50 years, oxygen minimum zones (OMZs) ...
Breaking Biology News(10 mins):Researchers discover new producer of crucial vitamin 2Specialized species critical for reefs 2Decoding virus-host interactions in the oxygen-starved ocean 2Decoding virus-host interactions in the oxygen-starved ocean 3Decoding virus-host interactions in the oxygen-starved ocean 4Decoding virus-host interactions in the oxygen-starved ocean 5
... Nile virus alarmed Americans when it made its first ... has since spread from coast to coast, sickened more ... the virus spread, medical investigators hastened research to develop ... a newly published paper by researchers at Washington University ...
... of Health in Angola has reported 266 cases of Marburg ... Province, which remains the epicentre of the outbreak, 253 cases, ... 21 April. , Assessment of the outbreak , The international ... on 22 March. The features of Marburg haemorrhagic fever, and ...
... biological network - can get you lost - quick. Tons of ... even more being unknown, tons of database with tons of information... ... a biologically meaningfull way. Applications are being developped to make it ... of them; I didn't have time to try it yet, but ...
Cached Biology News:Promising new West Nile therapy cures disease in mice 2Marburg haemorrhagic fever in Angola update 2Marburg haemorrhagic fever in Angola update 3GeneNotes - A novel information management software for biologists 2
(Date:9/15/2014)... go downhill fast when a patient has sepsis, a ... a patient,s blood -- often too fast for antibiotics ... spleen and developed by a team at Harvard,s Wyss ... way doctors treat sepsis. , "Even with the ... care units at least 30 percent of the time," ...
(Date:9/15/2014)... MORRISVILLE, NC (PRWEB) September 15, 2014 ... newly developed deep imaging OCT system for the optical ... , The EnvisuTM S4410 SDOCT for Contact ... measurements for standard and high complexity contact lens, IOL ... allows imaging of a complete contact lens immersed in ...
(Date:9/15/2014)... DUBLIN , Sept. 15, 2014 Research ... "Whole Exome Sequencing Market by Product, by Services, by Technology, ... their offering. Whole Exome Sequencing (WES) is ... the genome, i.e. the exon. The exome, which is the ... of the total genome and is actually converted into proteins ...
(Date:9/15/2014)... ANNAPOLIS, Maryland , 15. September 2014 /PRNewswire/ ... Week (IPAW) wird vom 12. bis 18. ... der Plasma Protein Therapeutics Association (PPTA) ... Ziele: , Das globale Bewusstsein für ... Den Beitrag von Plasmaspendern beim Retten und Verbessern ...
Breaking Biology Technology:Blood-cleansing biospleen device developed for sepsis therapy 2Blood-cleansing biospleen device developed for sepsis therapy 3Blood-cleansing biospleen device developed for sepsis therapy 4Bioptigen Introduces Deep Imaging OCT System for Contact Lens Metrology 2Global Whole Exome Sequencing (Systems, Kits, Library Preparation, Target Enrichment) Market by Product, by Services, by Technology, by Application - Forecast to 2018 2Global Whole Exome Sequencing (Systems, Kits, Library Preparation, Target Enrichment) Market by Product, by Services, by Technology, by Application - Forecast to 2018 3International Plasma Awareness Week feiert Spender und rückt seltene Krankheiten in den Mittelpunkt 2International Plasma Awareness Week feiert Spender und rückt seltene Krankheiten in den Mittelpunkt 3
... ... based on the Altera Stratix® IV 820 devices. These contain the largest FPGA on ... , ... 16, 2010 -- IRIS Technologies Inc. ( www.iris-technologies.net ) has released two new ...
... , ... Writers Association Recognizes Buckley/Swartz , ... Boston, MA (PRWEB) June 16, 2010 -- The American Medical Writers Association ... recipient of two Will Solimene Awards for Excellence in Medical Communication. She received the ...
... This release is avaiable in French ... range of high-tech products such as computer displays or ... ordered chemical composition as inorganic materials, preventing scientists from ... team of researchers led by McGill,s Dr. Dmitrii Perepichka ...
Cached Biology Technology:IRIS Technologies Inc. Launches Two New Stratix IV FPGA-Based Boards 2IRIS Technologies Inc. Launches Two New Stratix IV FPGA-Based Boards 3Medical Writer Rita Buckley Wins Awards for Excellence in Medical Communication 2Medical Writer Rita Buckley Wins Awards for Excellence in Medical Communication 3Organic nanoelectronics a step closer 2
... to rapidly and reliably amplify unknown genomic ... APAgene provides hassle-free, ready-to use components, at ... are provided in each kit. The Genome ... filling, localized cloning of genomic DNA, isolating ...
Rabbit polyclonal to Quinaldic Acid ( Abpromise for all tested applications). Antigen: Synthetic peptide Quinaldic Acid conjugated to a protein carrier....
Mol wt: average mol wt16,951.27 Da by calculation...
A set of five peptides which can be used to calibrate a Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) or Electrospray Ionization (ESI) mass spectrometer....
Biology Products: