Navigation Links
Biomarker for stress hormones in polar bears, wildlife affected by global climate change
Date:1/24/2014

major research area is in behavioral endocrinology, and in exploring "how these modern techniques can be used to get exciting new insights into the relationship between the endocrine system and behavior in animal research and human studies."

Over the past 40 years, Meyer says techniques have become not only much more sensitive and precise, but safer for researchers as they have been able to move away from using radioactive substances. "We can now measure much lower levels of substances than we could when I was a grad student," he recalls. "And with new enzyme immunoassay techniques read by a microplate reader, the work has become not only safer for researchers, but for lab workers and the environment."

To analyze cortisol levels in hair, the researchers need a sample about 3 cm long and weighing about 5 mg, that is, 10 or 12 strands. In humans, this amount cut from the scalp outward represents about three months of hormone activity as human hair grows an average 3 cm per month, Meyer notes. In his UMass Amherst lab about six undergraduates are currently learning the exacting techniques for washing and drying samples, grinding them to powder, extracting the cortisol, and conducting the enzyme immunoassay.

For the collaboration with Bechshft and colleagues, Meyer's lab received blind hair samples from 88 polar bears legally killed between 1988 and 2009 in Greenland by indigenous people who have an arrangement with researchers to provide biological samples. Cortisol will persist in hair for hundreds of years, Meyer explains.

"We have analyzed this hormone in several blind samples of polar bear hair from museum specimens that were killed and stuffed in the late 1800s, and we had no trouble measuring it 125 years later," he says. "Others have measured cortisol concentrations in Peruvian mummies 1,500 years old. It's one of the beauties of hair cortisol, you can measure it in archival specimens."


'/>"/>
Contact: Janet Lathrop
jlathrop@admin.umass.edu
413-545-0444
University of Massachusetts at Amherst
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Global Cancer Biomarkers Market 2012-2016 with Agilent Technologies Inc., Gen-Probe Inc. and Astellas Pharma US Inc. Dominating
2. Novel method could help bring cancer biomarkers to clinic
3. Regulus Demonstrates Initial Progress in microRNA Biomarkers MS Collaboration and Receives Milestone Payment from Biogen Idec
4. Use of Biomarkers in Clinical Trials for Drugs Outside of Oncology is Increasing
5. Droplet Digital PCR enables reproducible quantification of microRNA biomarkers
6. Biomarkers Market: Epigenetic & MicroRNA Biomarkers Report
7. Discovered a genetic biomarker that detects Lewy body dementia
8. Novel biomarkers improve diagnosis in rheumatoid arthritis
9. Biomarker identification may lead to new noninvasive test for colorectal cancer detection
10. Epigenetic biomarkers may predict if a specific diet and exercise regimen will work
11. TGen and Riddell announce partnership for biomarker study of concussive injuries
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Biomarker for stress hormones in polar bears, wildlife affected by global climate change
(Date:5/5/2015)... , May 5, 2015, NXT-ID, Inc. (NASDAQ: ... focused on the growing mobile commerce market, reminds investors and ... Technology Officer, is presenting  at CARTES SECURE CONNEXIONS AMERICA 2015, ... 2015. The three-day conference is organized into ... speaking in is themed Global Fraud: Where is the ...
(Date:4/21/2015)... High crime rate, increasing ... access control systems market in Saudi Arabia ... published report by TechSci Research " Saudi Arabia Access Control ... systems market in Saudi Arabia ... control systems market in the Kingdom is growing at ...
(Date:4/14/2015)...  HYPR Corp. today announced it has joined ... tm , an industry consortium transforming online authentication ... technology and collaborate to deliver open specifications for ... and private, and easier to use. ... sensitive user information and eliminates the dependency on ...
Breaking Biology News(10 mins):NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 2Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 3HYPR Corp. Joins the FIDO Alliance 2HYPR Corp. Joins the FIDO Alliance 3
... biologist at Fred Hutchinson Cancer Research Center, has received the ... Pfizer Inc., the award consists of a $25,000 prize in ... , She was among 18 honored by NAS this year ... the physical, biological and social sciences. , Biggins, a ...
... LA JOLLA, CA January 8, 2013 - Chemists at The ... one of the most fundamental tasks in molecular biology. Their new ... that these cells may be easily located and/or selected out from ... in a recent issue of the chemistry journal Angewandte Chemie ...
... Qubcois en Reproduction (RQR), Palais des congrs de Montral, Montral, ... Submissions: 15 February 2013 -- The Society for the ... for presentation at the 46th SSR Annual Meeting to be ... visit the SSR Meetings page ( http://www.ssr.org/Meetings.shtml ) for details; ...
Cached Biology News:National Academy of Sciences honors geneticist and biologist Sue Biggins 2Chemists devise inexpensive, benchtop method for marking and selecting cells 2Chemists devise inexpensive, benchtop method for marking and selecting cells 3
(Date:5/28/2015)... Fla. , May 28, 2015 ... the anti-cancer potential of its growth hormone-releasing hormone (GHRH) ... at the 2015 ASCO Annual Meeting. The data show ... for Biscayne,s anti-cancer GHRH blockers, is present on many ... These findings suggest that GHRH antagonists could have broad ...
(Date:5/28/2015)... York and London (PRWEB) May 28, 2015 ... provider of Computer Aided Engineering software, announced today ... Research, Inc. (PSRI). CD-adapco will provide state-of-the-art engineering ... members will share their expertise and experiences in ... and refining industry members and advance the understanding ...
(Date:5/28/2015)... May 28, 2015 Glenn Keet, CEO ... Changing Landscape of EMR/EHR Clinical Data Integration with EDC ... place in Washington, DC on June 14th-18th. , During ... integrating EMR/EHR systems with EDC, and will examine the ... by eSource and electronic health records/electronic medical records integration. ...
(Date:5/28/2015)... May 28, 2015 Global futurist ... point to ask his audiences if they are ... including robotics, solar cells, fuel cells, rapid health ... advanced battery storage technology, driverless cars, artificial intelligence ... but inexpensive online education. , While the ...
Breaking Biology Technology:Data Presented At 2015 ASCO Annual Meeting Shows Biscayne Pharmaceuticals' GHRH Antagonist Target Is Expressed Across All Breast Cancer Subtypes 2Data Presented At 2015 ASCO Annual Meeting Shows Biscayne Pharmaceuticals' GHRH Antagonist Target Is Expressed Across All Breast Cancer Subtypes 3CD-adapco and PSRI Chartering New Course in Particle Flow Simulations 2Clinovo Presents at the DIA 2015 51st Annual Meeting in Washington, DC on June 14th-18th 2Futurist Jack Uldrich to Deliver 4 Keynote Addresses in June 2
... regarding all of the complicated software programs churning away in ... , ,"Software bugs are part of the mathematical fabric of ... "It is impossible with a capital 'I' to detect or ... a novel way to root out and eradicate software bugs ...
... first two years of the Governor's Business Plan Contest , ... cutting edge of its respective industry. This year's field of 27 ... begun by start ups like Mithridion, Inc., the 2005 winner, and ... 2004. , ,As is the custom, the winner will be announced ...
... - When it comes to business development in Wisconsin, most ... story. But as a recent competition in Eau Claire shows, ... , ,The Eau Claire Area Economic Development Corporation ... is the winner of the third annual "Creating Your Own ...
Cached Biology Technology:Got bugs? New project lets real computer users gang up on software bugs 2Got bugs? New project lets real computer users gang up on software bugs 3Business plan finalists offer peek into entrepreneurial future 2Business plan finalists offer peek into entrepreneurial future 3Business plan finalists offer peek into entrepreneurial future 4High schooler's concept wins Eau Claire business contest 2