Navigation Links
Misclassified for centuries, medicinal leeches found to be 3 distinct species

Genetic research has revealed that commercially available medicinal leeches used around the world in biomedical research and postoperative care have been misclassified for centuries. Until now, the leeches were assumed to be the species Hirudo medicinalis, but new research reveals they are actually a closely related but genetically distinct species, Hirudo verbana.

The study also shows that wild European medicinal leeches are at least three distinct species, not one. The results appear in the April 10, 2007, online version of the journal Proceedings of the Royal Society B.

"This raises the tantalizing prospect of three times the number of anticoagulants, and three times as many biomedically important developments in areas like protease inhibitors," said Mark Siddall of the American Museum of Natural History, who led the research team. "However, it will also require a better effort to conserve these much-maligned animals, in a way that takes into account their impressive diversity."

While Hirudo medicinalis was approved by the U.S. Food and Drug Administration (FDA) in 2004, for use as a prescription medical device that helps restore blood flow following cosmetic and reconstructive surgery, Hirudo verbana has not been approved by the FDA and has no special conservation status.

"This study is a great example of why the field of taxonomy [the science of classification of organisms] is so important," said Patrick Herendeen, program director in the National Science Foundation (NSF) Division of Environmental Biology, which funded the research. "Taxonomists have been studying the diversity of life on Earth for hundreds of years. In this case, the discovery of previously unknown species diversity has very significant legal and commercial implications."

Since the time of Hippocrates and long before Carolus Linnaeus first described Hirudo medicinalis in 1758, medicinal leeches have been used in a variety of medical treatments--s
'"/>

Source:National Science Foundation


Page: 1 2

Related biology news :

1. New component of the brakes on nerve regeneration found
2. Strongest proof yet found for prion hypothesis
3. A puzzle piece found in unraveling the wiring of the brain
4. New World founders small in number
5. Norovirus found to cause travelers diarrhea
6. Pair of cancer genes found to drive both cell migration and division
7. Alien woodwasp, threat to US pine trees, found in N.Y.
8. Achilles heel of the herpes virus possibly found
9. Purdue scientists may have found key to halting spinal cord damage
10. Unexpected lock and key mechanism found for the assembly of tumor blood vessels
11. New protein vital for immune response is found in surprise location
Post Your Comments:
(Date:3/31/2015)... NEW YORK , March 31, 2015  Elephant ... the "Company"), a global provider of Software Defined Network ... solutions, today announced total revenue of approximately $20.4 million ... to a restated $19.5 million for the year ended ... of calendar 2014, the Company had completed its multi-year ...
(Date:3/30/2015)... Research and Markets ( http://www.researchandmarkets.com/research/lc9bnl/global_gesture ) ... Recognition Market in Automotive Sector 2014-2018" report to ... Gesture Recognition market in Automotive Sector to grow at ... Gesture recognition is the ability of a device ... individual. Gesture recognition technology can be 2D-based or 3D-based. ...
(Date:3/24/2015)... and Markets ( http://www.researchandmarkets.com/research/hdgz7h/global_iris ) has announced ... 2015-2019" report to their offering. The ... at a CAGR of 23.5 percent over the period ... and the growth prospects of the Global Iris Recognition ... size, the report considers the revenue generated from sales ...
Breaking Biology News(10 mins):Elephant 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 6Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2
... Inc. (TSX-V: IOT), a pioneer in the field of biofilm ... Ltd of Israel to market and distribute its bioFILM PA ... very excited to enter into this agreement with LevPharm, who ... on improving patient care while reducing the cost burden to ...
... blue-green algae out-compete other organisms through a form of ... in freshwater bodies -- has been described by a ... In general, the increasing occurrence of toxic cyanobacterial (blue-green ... growing international concern due to their detrimental impact on ...
... 2010 A new report, Agriculture,s Role in Greenhouse ... of Agronomy, Crop Science Society of America, and Soil ... gas (GHG) emissions and sequestration in America,s major agroecosystems. ... (CO2), nitrous oxide (N2O) and methane (CH4) emissions and ...
Cached Biology News:How algae 'enslavement' threatens freshwater bodies described by Hebrew University researcher 2US greenhouse gas emissions and capture, regionally 2
(Date:4/27/2015)... 27, 2015 Dr. Robert Hanzlik, whose ... toxicity carries implications for advancing the creation of safer ... National University , the second-largest private, nonprofit university ... Hanzlik, a professor at the University of Kansas School ... design, starts at 5 p.m. and takes place at ...
(Date:4/27/2015)...  Edico Genome today announced that collaborative data ... Stanford Universities showed the DRAGEN™ Bio-IT Processor sped ... depth of coverage by tenfold, generating results in ... standard software. "Processing large amounts of ... research and clinical labs, in terms of the ...
(Date:4/27/2015)... Deadly viruses such as Ebola are ... the University City Science Center's Port business ... With a $4.5 million Phase 2 SBIR grant from ... Therapeutics is focused on therapies for unmet medical ... is developing first-in-class protease inhibitors based on a technology ...
(Date:4/27/2015)... , 27 avril 2015 /PRNewswire/ ... médicamenteuse spécialisée dans le développement d,une ... soigner les infections bactériennes polypharmacorésistantes potentiellement ... de données prouvant les promesses de ... dans la lutte contre la résistance ...
Breaking Biology Technology:Dr. Robert Hanzlik Discusses Pharmaceutical Testing Models at Event Hosted by National University 2Dr. Robert Hanzlik Discusses Pharmaceutical Testing Models at Event Hosted by National University 3Edico Genome, in Collaboration with Researchers from Harvard and Stanford Universities, Speeds Analysis of Whole Genome Sequence with 300x Depth of Coverage Tenfold 2Edico Genome, in Collaboration with Researchers from Harvard and Stanford Universities, Speeds Analysis of Whole Genome Sequence with 300x Depth of Coverage Tenfold 3New Resident of Science Center’s Port Business Incubator Targets SARS and Ebola 2TAXIS Pharmaceuticals démontre la puissance clinique du TXA709 dans la lutte contre la résistance aux antibiotiques 2TAXIS Pharmaceuticals démontre la puissance clinique du TXA709 dans la lutte contre la résistance aux antibiotiques 3TAXIS Pharmaceuticals démontre la puissance clinique du TXA709 dans la lutte contre la résistance aux antibiotiques 4TAXIS Pharmaceuticals démontre la puissance clinique du TXA709 dans la lutte contre la résistance aux antibiotiques 5TAXIS Pharmaceuticals démontre la puissance clinique du TXA709 dans la lutte contre la résistance aux antibiotiques 6
... is Well-Positioned to Expand Business Development Efforts, ... Inc., a company,focused on the development of molecular ... market, announced today that Joe Ross has,joined the ... President of,Strategic Initiatives., In this new role, ...
... WARSAW, Ind., Sept. 4 Zimmer Holdings, Inc.,(NYSE: ... subsidiaries have,agreed to acquire the Abbott Spine business from ... expects to fund the purchase price,from cash on hand ... is expected to close in the fourth quarter of ...
... Ohio State University,Medical Center has invited experts from ... the laboratory to clinical health,care practice during the ... Health care leaders, government policy makers, health care ... patient,advocacy groups will be among the more than ...
Cached Biology Technology:Axial Biotech appoints new Vice President of Strategic Initiatives 2Zimmer Holdings, Inc. Announces Agreement to Acquire Abbott Spine, an Innovator in Spinal Technology 2Zimmer Holdings, Inc. Announces Agreement to Acquire Abbott Spine, an Innovator in Spinal Technology 3Zimmer Holdings, Inc. Announces Agreement to Acquire Abbott Spine, an Innovator in Spinal Technology 4OSU to Host National Personalized Health Care Conference 2
... experimental process of determining the nucleotide sequence ... Sequencing is based on Sangers enzymatic method ... cycle sequencing reactions. The resulting fluorescent products ... instrument controlled by a computer and the ...
... Anti-phospho-Lck (pTyr 192 ) The antibody is preadsorbed ... affinity isolated antibody buffered aqueous glycerol solution ... saline (without Mg 2+ and Ca 2+ ... 1.0 mg/mL BSA (IgG, protease free) and 0.05% ...
... calibration, and validation (MCV) plate ... used for hands-free startup, shutdown, ... the Bio-Plex suspension array system. ... use with Bio-Plex Manager software ...
High-throughput DNA sequencing of any library. Just give us your transformation mixture, and we'll do the rest. ABI 3730xl's yield the longest read lengths available. LIMS tracking utilizing Geospiza...
Biology Products: