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:4/2/2015)... In the current eight ... the strongest competitors, showing outstanding performance in recognition ... is capable of a throughput of 5.000.000 fingerprints ... be ten times faster than most competitors and ...      (Photo: http://photos.prnewswire.com/prnh/20150402/738673-a ) , ...
(Date:4/2/2015)... Fingerprint Cards (FPC) has received ... the distributor World Peace Industrial Group (WPI), part of ... the major part of the shipments will take place ... smartphone manufacturers in China . The ... communicated revenue guidance of + 1 000 MSEK for 2015.  ...
(Date:3/31/2015)... , March 31, 2015  Elephant Talk Communications Corp. ... global provider of Software Defined Network Architecture (ET Software ... total revenue of approximately $20.4 million for the year ... $19.5 million for the year ended December 31, 2013. ... the Company had completed its multi-year transition away from ...
Breaking Biology News(10 mins):DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 2DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 3Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 110 Million 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6
... it,s not always the good-looker who gets the girl. In ... and stealth beat out colorful and refined almost every time. ... South American species of fish ( Poecilia parae ), which ... how the interplay between male mating strategies and predator behavior ...
... researchers have found that native pollinators, like wild bees ... as honey bees and that these viruses are transmitted ... in PLoS ONE, an online open-access journal for the ... This multi-institutional study provides new insights into viral infections ...
... To survive in a tumultuous environment, sea urchins literally eat ... the spiny creatures hide from predators and protect themselves from ... where they live. The rock-boring behavior is astonishing, scientists ... grinding and scraping on stone, urchin teeth never, ever get ...
Cached Biology News:SU scientists find that in the evolutionary mating game, brawn and stealth rule 2SU scientists find that in the evolutionary mating game, brawn and stealth rule 3Movement and threat of RNA viruses widespread in pollinator community 2Ever-sharp urchin teeth may yield tools that never need honing 2
(Date:4/30/2015)... CA (PRWEB) April 30, 2015 SureClinical, ... that Julie I. Morris has joined SureClinical’s executive team ... an experienced biotech and technology executive with over 25 ... Fortune 500 companies. , Ms. Morris joins SureClinical ... biotech company. She was CFO of MBI from its ...
(Date:4/29/2015)... 2015 According to a new ... Product (Portable & Non-Portable), Component (Accelerometer, Proximity Probe, ... Metal & Mining, & Others), & Geography - ... expected to reach $1,453.76 Million by 2020, at ... data tables and 92 figures spread through 205 ...
(Date:4/29/2015)... , April 29, 2015   Doximity , ... of all US doctors as members, announced a new, ... — "Apply Using Doximity." With one click, all US ... a curriculum vitae (CV) for an open job opportunity, ... directly. Eighty seven percent of physicians are ...
(Date:4/29/2015)... Poway, CA (PRWEB) April 29, 2015 ... proud to announce that its regenerative stem cell therapy ... founded in 2002, seeking to discover a successful treatment ... ligaments. , In 2003 VetStem signed a worldwide exclusive ... veterinary application, and the first horse was treated in ...
Breaking Biology Technology:Julie I. Morris Joins SureClinical as Chief Financial Officer 2Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 2Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 3Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 4Doximity Offering Hospitals Easy, Efficient Physician Application Tool 2VetStem Biopharma -Regenerative Cell Therapy has processed over 11,000 samples 2
... BROOKFIELD, Wis.- Fiserv, Inc., an ATM and ... transfer network saw its volume increase more than 57% ... overall growth rate of 57% was tremendous and makes ... said Kevin Gregoire, Senior Vice President of Products and ...
... the great rock concert halls and rock festivals of the ... musical Meccas continues (mostly in the form of Farewell Tours ... wild 1980s and 1990s is celebrated every year in a ... lead the charge in promoting the hot biotech companies of ...
... outsourcing as an issue du jour. I stand corrected. ... year at that for America) due to slow job ... the U.S. Prominent voices along every point of the ... nomination to the Bush Administration and a host of ...
Cached Biology Technology:The Biotech Concert Halls of the Decade of 2000 2The Great Offshore Outsourcing Debate 2
... The Amplifluor UniPrimer-fluorescein is a hairpin ... transfer pair (fluorescein and non-fluorescent quencher) ... The UniPrimer is identical to ... Universal Detection System (S7901) and is ...
...
Mouse monoclonal antibody raised against a partial recombinant EBI3. NCBI Entrez Gene ID = EBI3...
... Model AS-2055 and AS-2057 are fully automatic ... highest possible level of precision. Sampling flexibility ... positions (microplate) for,laboratory automation and combinatorial chemistry. ... micro-vials or the standard rack for 50 ...
Biology Products: