Navigation Links
Precision biochemistry tracks DNA damage in fish

Like coal-mine canaries, fish DNA can serve as a measure of the biological impact of water and sediment pollution--or pollution clean-up. That's one of the conclusions of a new study* by researchers from the Pacific Northwest Research Institute (PNRI), Woods Hole Oceanographic Institution, the University of Maryland and the National Institute of Standards and Technology (NIST).

Research over the past several years has demonstrated the adverse effects of industrial pollutants in water and sediment on the health of fish in the lower Duwamish River. The Duwamish flows through an industrialized section of south Seattle, Wash., and in 2001 a section of the lower river was added to the Environmental Protection Agency's Superfund list because of contaminants including polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), mercury and other metals, and phthalates. In previous research on Duwamish fish, PNRI used an infrared spectroscopy method to document DNA damage in the gills of English sole.

In a new joint paper, the researchers report on several biomarkers, including pollution-induced P450 enzyme changes, and on infrared spectral analysis of DNA and measurements of specific modifications to DNA from fish gills and livers using liquid and gas chromatography combined with mass spectrometry (LC/MS,GC/MS). Precision chemical analysis techniques at NIST allowed the researchers to identify and measure damage to adenine and guanine, specific chemical components or bases of DNA, at extraordinarily low levels--five lesions out of a 100 million bases in one case. The results correlated well with earlier research and revealed similar damage to liver DNA (more likely tied to the fish's food) and gill DNA (more probably reflecting pollutants in water).

The results suggest that these DNA lesions, and others like them, can be used as very sensitive biomarkers to provide a direct measure of the impact of contaminants on fish populations. More over, since natural DNA repair processes may gradually reverse the damage in the absence of further insults, these biomarkers also might be used to help assess the efficacy of pollution remediation efforts. The work was funded in part by the National Institute of Environmental Health Sciences (NIH).


'"/>

Source:National Institute of Standards and Technology (NIST)


Related biology news :

1. Protein offers way to stop microscopic parasites in their tracks
2. Stopping smallpox in its tracks: A new anti-viral approach
3. Venom doc tracks down snake bioweapons
4. MERIS monitoring tracks planetary photosynthesis levels
5. U. of Colorado researcher identifies tracks of swimming dinosaur in Wyoming
6. Magnetic probe successfully tracks implanted cells in cancer patients
7. Research tracks whales by listening to sounds
8. New tool tracks brain development in babies
9. Ghost protein leaves fresh tracks in the cell
10. New study aims to stop sepsis in its tracks
11. New imaging technique tracks traffic patterns of white blood cells
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/31/2016)... March 31, 2016  Genomics firm Nabsys has completed ... Barrett Bready , M.D., who returned to the ... original technical leadership team, including Chief Technology Officer, ... Development, Steve Nurnberg and Vice President of Software and ... company. Dr. Bready served as CEO of ...
(Date:3/23/2016)... , March 23, 2016 ... Interesse erhöhter Sicherheit Gesichts- und Stimmerkennung mit ... Inc. (NASDAQ: MESG ), ein ... dass das Unternehmen mit SpeechPro zusammenarbeitet, um ... der Finanzdienstleistungsbranche, wird die Möglichkeit angeboten, im ...
(Date:3/22/2016)... PROVO and SANDY, Utah ... Ontario (NSO), which operates the highest sample volume laboratory ... and Tute Genomics and UNIConnect, leaders in clinical sequencing ... announced the launch of a project to establish the ... panel. NSO has been contracted by ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... ... 2016 , ... During a two day program for start-up ... CereScan’s CEO, John Kelley, joined other Denver business leaders in providing business basics ... Denver area business community, shared his top fundamental learnings in building an effective, ...
(Date:4/28/2016)... April 28, 2016 The report ... Brayton Cryocoolers), Service (Technical Support, Product Repairs & Refurbishment, ... Global Forecast to 2022", published by MarketsandMarkets, the global ... by 2022, at a CAGR of 7.29% between 2016 ... Tables and 94 Figures spread through 159 Pages and ...
(Date:4/28/2016)... ... April 28, 2016 , ... ... investments in recruiting top industry experts, and expanding its LATAM network and logistics ... tools for clients to manage their clinical trial projects. , The expansion will ...
(Date:4/27/2016)... ... ... The Pittcon Organizing Committee is pleased to announce that Charles “Chuck” Gardner was ... since 1987. Since then, he has served in a number of key leadership positions ... the program and exposition committees. In his professional career, Dr. Gardner is the director ...
Breaking Biology Technology: