Navigation Links
New study documents use of hormone progesterone in simple microscopic aquatic animals
Date:6/14/2010

ers gained further evidence of progesterone receptor's presence through the use of affinity chromatography, which used the same probe system to extract the receptor from a mixture of proteins contained in the rotifers. Further, mass spectrometry indicated the presence of progesterone at parts-per-billion levels in rotifer mass.

Finally, Snell and School of Biology research scientist Tonya Shearer demonstrated a direct connection between the hormone and the switch to sexual reproduction in the rotifers. They used RNA interference (RNAi) technology to silence the gene controlling the progesterone receptor, which reduced by nearly two-thirds the number of animals switching over to sexual reproduction in response to the progesterone signal.

"This suggests that progesterone is important in this switch from asexual to sexual reproduction," Stout said. "Progesterone is certainly involved in the process, though there may be more going on in a cascade process that we haven't yet seen."

Beyond explaining how chemical signaling mechanisms crucial to both rotifers and humans evolved over time, the research can also help researchers understand the interplay between the environment, metabolism, hormones and behaviors.

"We can learn things from working with rotifers that touch upon human biology, including in this case the universality of steroids in reproduction and how steroids are used differently in different animals," Kubanek said. "When we experiment with rotifers in the lab, we can manipulate their behavior, physiology and metabolic pathways to determine how these steroids are made and used."

Though the researchers were looking for progesterone in the rotifers, finding the same molecule that is essential to humans still came as a surprise.

"It's a very complex system for such a simple organism," said Stout, whose primary research focuses on complex potential pharmaceutical compounds produced by marine organisms su
'/>"/>

Contact: John Toon
jtoon@gatech.edu
404-894-6986
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New study documents use of hormone progesterone in simple microscopic aquatic animals
(Date:5/19/2015)... NEW YORK , May 19, 2015  Technology ... resources both internally and in the cloud. Passwords and ... the use of OTP and standards-based specifications such as ... that the outmoded use of passwords presents for BYOD, ... needs a unified biometric identity protocol. ...
(Date:5/18/2015)... May 18, 2015 Fingerprint Cards (FPC) ... FPC1025, FPC1145, FPC1155 and FPC1035 from one if its module ... and including Q3 2015 and the sensors will be used ... order values for 2015 hereby amount to 740 MSEK to ... of 140 MSEK and a number of smaller orders not ...
(Date:5/14/2015)... 2015  Verificient Technologies, Inc., a technology ... remote proctoring, announced a new alliance partnership ... creator of the Canvas Learning Management System ... will benefit from the seamless integration of ... a fully integrated multifactor biometrics behavioral application, ...
Breaking Biology News(10 mins):HYPR Corp. Biometric Security Integration Kit Shields Applications and Devices Across the Internet of Things 2HYPR Corp. Biometric Security Integration Kit Shields Applications and Devices Across the Internet of Things 3Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2Verificient and Instructure Announce Alliance Partnership to Provide Online Proctoring for K-12 and Higher Education Institutions 2
... at the Faculty of Kinesiology, University of Calgary, is ... A. The study found that animals injected with ... Toronto, Ontario, Canada) experienced muscle weakness in muscles throughout ... the injection site. The study also found that repeated ...
... Africa can feed itself. And it can make ... single generation. The startling assertions, in stark contrast ... collection of studies published today that present a clear ... so, its economy. The strategy calls on governments ...
... Habitat destruction and species extinction may lead to an increase ... a paper in the journal Nature co-authored by ... be published Thursday, UF biology professor Robert D. Holt and ... range of systems, including data from plants, animals and bacteria, ...
Cached Biology News:New insights about Botulinum toxin A 2Africa can feed itself in a generation: Study 2Africa can feed itself in a generation: Study 3Africa can feed itself in a generation: Study 4Africa can feed itself in a generation: Study 5Africa can feed itself in a generation: Study 6Africa can feed itself in a generation: Study 7UF expert: Biodiversity loss correlates with increases in infectious disease 2
(Date:5/21/2015)... Bridgewater, NJ (PRWEB) May 21, 2015 ... and a method for diagnostic or therapeutic imaging within ... the apparatus uses an endoscope having a low cost, ... original USPTO filing date was October 18, 2013 and ... The technology enables the physician to customize the ...
(Date:5/21/2015)... - RepliCel Life Sciences Inc. (TSX.V: RP) (OTCQB: ... on the development of autologous cell therapies, announced ... Society for Cellular Therapy (ISCT) on RepliCel,s autologous ... a Phase 1/2 clinical trial.  The presentation, taking ... PM to 7:00 PM local time, will review ...
(Date:5/20/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/x4b7kw/top_technologies ... Technologies in HW_Technical Insights" report to their offering. ... technology trends in the Health and Wellness sector and ... have an impact in the year 2015. The research ... 10 health and wellness technologies that are anticipated to ...
(Date:5/20/2015)... 2015 The global genotyping market is ... the forecast period of 2015 to 2020 to reach ... in drug discovery and development process and to provide ... addition to this,heavy investments by key manufacturers to offer ... propelling market growth. Browse 113 market data tables & ...
Breaking Biology Technology:IpAuctions™ Presents The Worlds Smallest Disposable Illuminated Endoscope For Auction 2IpAuctions™ Presents The Worlds Smallest Disposable Illuminated Endoscope For Auction 3RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 2RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 3Top Technologies in the Health and Wellness Industry 2015 2Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 2Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 3Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 4Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 5
... New Brunswick, N.J. Rutgers physicist Emil Yuzbashyan has ... which provides $625,000 in research funding for five years. ... awarded this coveted fellowship to a Rutgers University professor. ... selected from nominations at 50 of the nations top ...
... Oct. 11 MacAndrews & Forbes Holdings Inc.,announced ... Executive Vice,Chairman and Chief Administrative Officer. As Chief ... governmental and,administrative aspects of the Company,s businesses. Mr. ... serve as MacAndrews & Forbes,s,General Counsel. "Barry ...
... Inc.,has recently released the first (40) in a series ... available through subscription to Timely,Data Resources, Incidence and Prevalence ... offer a quick and,affordable overview of the critical facts ... pages in length, and covers the following information: ...
Cached Biology Technology:Rutgers physicist earns prestigious Packard Foundation Science and Engineering Fellowship 2MacAndrews & Forbes Names Barry F. Schwartz as Executive Vice Chairman 2
Human RXR beta/NR2B2 MAb (Clone H7341) Keywords: RXRbeta, RXRbeta, Retinoid X Receptor beta...
Human SOST Affinity Purified Polyclonal Ab...
BOND ELUT MATRIX-C18, 25 mg ...
Prepared from plasminogen by activation with immobilized human uPA...
Biology Products: