Navigation Links
Coastal creatures may have reduced ability to fight off infections in acidified oceans
Date:8/5/2010

jected to low oxygen, high carbon dioxide conditions. It takes about half as much bacteria to administer a lethal dose to a creature in a low oxygen, high carbon dioxide environment.

"Our approach is exciting because traditionally physiologists haven't considered bacteria or disease as a natural environmental barrier, so it's a pretty open field," says Louis Burnett.

Apparently, if marine animals are challenged with a pathogen, a large number of their blood cells disappear within a few minutes. The blood cells clump up to attack the pathogen, but also lodge in the gills (the sea critter version of lungs), where the body gets it oxygen. The scientists see evidence that sea animals fighting off infection lower their metabolism, which slows down other important processes like making new proteins.

"Everything we see points to the fact that if an animal that mounts a successful immune response then their gill function and ability to exchange oxygen is reduced by about 40 percent, which is why they seem to be having such problems living in low oxygen conditions," says Karen Burnett. "If you add high carbon dioxide to that, it gets worse."

The researchers are now using microarrays to measure changes in gene expression in marine organisms that are exposed to bacteria under low oxygen, high carbon dioxide conditions.

"After exposure to these conditions for only a day, animals at the molecular level have given up in trying to adapt to the situation, and they are going into molecular pathways that indicate cell death," says Karen Burnett.

The coastal animals the Burnett's study live in environments where natural levels of oxygen and carbon dioxide fluctuate. Theoretically, these animals are already adapted for varied environments, and yet they still struggle with these changing conditions. It's alarming that deep-water animals may be much more affected by ocean acidification, since they are not used to the ebb and flow
'/>"/>

Contact: Donna Krupa
DKrupa@the-aps.org
301-634-7209
American Physiological Society
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Coastal birds carry toxic ocean metals inland
2. Invasive tunicate appears in Oregons coastal waters
3. UCLA engineers develop faster method to detect bacterial contamination in coastal waters
4. NASA researcher nets first measure of Africas coastal forests
5. Shifting Sands highlights past, present and future of Maryland coastal bays ecosystem
6. New study ranks hotspots of human impact on coastal areas
7. Bycatch whaling a growing threat to coastal whales
8. NOAA report calls flame retardants concern to US coastal ecosystems
9. Scientists find climate change to have paradoxical effects in coastal wetlands
10. Stronger coastal winds due to climate change may have far-reaching effects
11. First-ever socioeconomic study on coral reefs points to challenges of coastal resource management
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... 2014The development of stem cell therapies to cure a ... stem cell populations based on cell surface markers. Researchers ... marker that is highly expressed in a type of ... they describe in an article in BioResearch Open ... Inc., publishers. The article is available free on the ...
(Date:4/17/2014)... cartridge developed at Sandia National Laboratories and recently licensed ... and cheaper. , Bacillus anthracis , the ... all over the world and can cause serious, and ... bacteria can survive in harsh conditions for decades. In ... through skin contact, inhalation of spores or eating contaminated ...
(Date:4/17/2014)... to produce hydrogen sulfide in order to properly multiply ... from the Center for Craniofacial Molecular Biology at the ... Songtao Shi, principal investigator on the project, said the ... the flow of calcium ions. The essential ions activate ... or the creation of new bone tissue, and keeps ...
Breaking Biology News(10 mins):Pocket-sized anthrax detector aids global agriculture 2Pocket-sized anthrax detector aids global agriculture 3
... 9, 2009 A nutritionist whose research was instrumental in ... Children (WIC) food subsidy will receive the March of Dimes ... maternal-fetal nutrition. Gail Harrison, Ph.D., MNS, , ... the University of California, Los Angeles School of Public Health, ...
... 150th anniversary this month of the publication of On ... Sciences (AIBS) is publishing open access two peer-reviewed articles ... , The two articles are by Kevin Padian of ... of Western Carolina University. Padian,s article, "Ten Myths About ...
... Conn.Researchers at Yale University have developed synthetic molecules capable ... HIV-infected cells, as well as to prostate cancer cells. ... the American Chemical Society , could lead to novel ... called "antibody-recruiting molecule targeting HIV" (ARM-H) and "antibody-recruiting ...
Cached Biology News:March of Dimes honors Dr. Gail Harrison for outstanding work in maternal-fetal nutrition 2New synthetic molecules trigger immune response to HIV and prostate cancer 2
(Date:1/14/2014)... As pet owners drew up their lists of New Year,s ... better care of my furry companion." Nowadays there are pet salons, ... cases to take the little canine or feline darlings along wherever ... buy some pricey toys at the pet store. But anyone who ...
(Date:1/14/2014)... DIEGO and BETHESDA, Md. ... are joining together with two institutes from the National ... reliable tools for bringing safer, more effective treatments to ... the National Center for Advancing Translational Sciences (NCATS) and ...
(Date:1/14/2014)... 2014  RXi Pharmaceuticals Corporation (OTCQX: RXII), a biotechnology ... therapies addressing major unmet medical needs using RNA-targeted ... of Allowance from the United States Patent and ... (sd-rxRNA®), for the treatment of fibrosis. The patent ...
(Date:1/14/2014)... USA, and Cardiff, UK (PRWEB) January 13, 2014 ... technology development leader with more than 20 years in ... for optics and photonics . Hainsey will serve as ... delighted to have Dr. Hainsey join SPIE as our ...
Breaking Biology Technology:New Year's Resolution: Give Pets the Gift of Top-Notch Health Care 2Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2
... MAISONS-ALFORT, France, April 14 /PRNewswire-FirstCall/,-- Cephalon, Inc. (Nasdaq: ... has granted marketing authorization for EFFENTORA(TM), a buccal,tablet ... treatment of,breakthrough cancer pain (BTCP) in adult patients ... pain. The approval allows Cephalon,to market EFFENTORA in ...
... blood-based ColonSentry(TM) test -, TORONTO, April 14 ... on developing blood-based biomarker tests for the early,detection ... performance results from a large validation study of ... patient,s current risk for,colorectal cancer. This panel forms ...
... ImaRx Therapeutics,Inc. (Nasdaq: IMRX ) today announced ... 11, 2008 indicating that for the last 30,consecutive business ... closed,below $1.00 per share. As a result, the company ... continued listing set forth in,Marketplace Rule 4310(c)(4)., In ...
Cached Biology Technology:Cephalon Announces European Commission Approval of EFFENTORA for the Treatment of Breakthrough Cancer Pain 2Cephalon Announces European Commission Approval of EFFENTORA for the Treatment of Breakthrough Cancer Pain 3Cephalon Announces European Commission Approval of EFFENTORA for the Treatment of Breakthrough Cancer Pain 4GeneNews reports positive results from validation study of colorectal cancer biomarkers in late-breaking abstract at AACR 2GeneNews reports positive results from validation study of colorectal cancer biomarkers in late-breaking abstract at AACR 3ImaRx Therapeutics Receives Notification from NASDAQ Regarding Non-Compliance with NASDAQ's Minimum Bid Price Requirement 2
... Science, which pioneered the blending of thermostable ... and Expand Long Template PCR Systems, now ... the first product of a family ... blend combines Taq DNA Polymerase with a ...
The HEPTEST assays provide a sensitive, simple, rapid, and convenient in vitro quantitation of heparin, low molecular weight heparins, and heparinoids in plasma and whole blood. Sample Type: wh...
...
... enzyme mix (Thermoprime Plus DNA Polymerase with ... four times higher fidelity than standard Taq ... Taq DNA polymerase, Amplifies DNA templates >20kb, ... PCR, PCR for cloning and mutagenesis We ...
Biology Products: