Navigation Links
Grasshopper mice are numb to the pain of the bark scorpion sting
Date:10/24/2013

The painful, potentially deadly stings of bark scorpions are nothing more than a slight nuisance to grasshopper mice, which voraciously kill and consume their prey with ease. When stung, the mice briefly lick their paws and move in again for the kill.

The grasshopper mice are essentially numb to the pain, scientists have found, because the scorpion toxin acts as an analgesic rather than a pain stimulant.

The scientists published their research this week in Science.

Ashlee Rowe, lead author of the paper, previously discovered that grasshopper mice, which are native to the southwestern United States, are generally resistant to the bark scorpion toxin, which can kill other animals.

It is still unknown why the toxin is not lethal to the mice.

"This venom kills other mammals of similar size," said Rowe, Michigan State University assistant professor of neuroscience and zoology. "The grasshopper mouse has developed the evolutionary equivalent of martial arts to use the scorpions' greatest strength against them."

Rowe, who conducted the research while at The University of Texas at Austin, and her colleagues ventured into the desert and collected scorpions and mice for their experiments.

To test whether the grasshopper mice felt pain from the toxin, the scientists injected small amounts of scorpion venom or nontoxic saline solution in the mice's paws. Surprisingly, the mice licked their paws (a typical toxin response) much less when injected with the scorpion toxin than when injected with a nontoxic saline solution.

"This seemed completely ridiculous," said Harold Zakon, professor of neuroscience at The University of Texas at Austin. "One would think that the venom would at least cause a little more pain than the saline solution. This would mean that perhaps the toxin plays a role as an analgesic. This seemed very far out, but we wanted to test it anyway."

Rowe and Zakon discov
'/>"/>

Contact: Ashlee Rowe
roweashl@msu.edu
517-432-4468
University of Texas at Austin
Source:Eurekalert  

Page: 1 2

Related biology news :

1. New scorpion discovery near metropolitan Tucson, Arizona
2. Clemson hosting scientists who study devastating diseases
3. Paper-based device could bring medical testing to remote locales
4. Neuron claws in the brain enable flies to distinguish 1 scent from another
5. New Brain Supplement Focus Boost Launches, Boosting Alertness, Memory and Focus
6. Finally mapped: The brain region that distinguishes bits from bounty
7. FPC Awarded new Smartphone DW From Existing Prominent Asian OEM Customer for Launch With Leading US Operator
8. Funding for animal testing alternative
9. First update in a century in testing drugs for elemental impurities
10. CCNY chemists devise new way to prepare molecules for drug testing
11. With early, obvious benefit of a targeted cancer drug, should expensive clinical testing continue?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Grasshopper mice are numb to the pain of the bark scorpion sting
(Date:7/28/2014)... a mechanism in part of the brain that is key ... both type 1 and type 2 diabetes. The findings are ... the National Academies of Sciences . , "We,ve discovered ... of the hypothalamus known as the ventromedial nucleus sets ... in the blood," said lead author Sabrina Diano, professor in ...
(Date:7/28/2014)... Solanum pennellii , a wild relative of the domestic ... researchers including the labs headed by Professors Neelima Sinha ... Plant Biology. The new genome information may help breeders ... July 27 in the journal Nature Genetics , ... University in Germany. The UC Davis labs carried out ...
(Date:7/28/2014)... is no cure for Alzheimer,s disease and other forms ... closer to finding treatment. , University of Washington bioengineers ... the harmful changes of the body,s normal proteins into ... Alzheimer,s, Parkinson,s, heart disease, Type 2 diabetes and Lou ... they shift from their normal state into an abnormally ...
Breaking Biology News(10 mins):Glucose 'control switch' in the brain key to both types of diabetes 2New protein structure could help treat Alzheimer's, related diseases 2New protein structure could help treat Alzheimer's, related diseases 3
... industry is being significantly challenged as production levels ... means for improving the industry,s competitiveness are being ... Manufacturing, Innovation, Trade, Resources and Energy (DMITRE) has ... to undertake a study that identifies potential routes ...
... restrictions have become unnecessarily restrictive and expensiveon Mars., ... astrobiologists Alberto Fairn of Cornell University and Dirk ... Office of Planetary Protection,s "detailed and expensive" efforts ... missions to search for life on the red ...
... Research Careers) Program has announced the travel award recipients ... in Immunology meeting in Boston, MA from July 28-August ... entry of students, postdoctorates and scientists from underrepresented groups ... to encourage the participation of young scientists at the ...
Cached Biology News:Bioeconomy as a solution for South Australia's declining forest industry 2Bioeconomy as a solution for South Australia's declining forest industry 3Researchers call for rethinking efforts to prevent interplanetary contamination 2
(Date:7/29/2014)... California (PRWEB) July 29, 2014 The ... is a next generation approach to robotics. What sets ... is patent pending technology that allows them to communicate, ... all wirelessly over the internet. , “The invention is ... giving the little Droidles a life of their own, ...
(Date:7/29/2014)... (PRWEB) July 29, 2014 White ... devices, and cloud based eClinical technologies, have been published ... Online. These follow a long line of white papers ... publications including Life Science Leader, Pharmaceutical Online, and OpenHealthNews. ... provided a paper by CTO Marc Desgrousilliers, 'The ...
(Date:7/28/2014)... , July 28, 2014 Sapphire Energy, ... today announced the appointment of biotechnology veteran James ... board of directors. Levine replaces Cynthia ,CJ, Warner, who ... will remain chairman of the company,s board of directors. ... Energy,s mission to deliver commercial scale algae-based fuels has ...
(Date:7/28/2014)... (PRWEB) July 28, 2014 Proove ... medicine, will be exhibiting data and research conducted through ... International Spine Intervention Society’s (ISIS) 22nd Annual Scientific ... at the Hyatt Regency, in Orlando, Florida. ... and clinical competence of physicians who care for patients ...
Breaking Biology Technology:Droidles, the Social Network of Robots and Open Source Platform for the Internet of Things, Launches for Crowd Funding on IndieGoGo.com 2Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 2Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 3Sapphire Energy Announces New CEO James Levine 2Sapphire Energy Announces New CEO James Levine 3Proove Biosciences Exhibits Industry Leading Data and Research at International Spine Intervention Society’s 22nd Annual Scientific Meeting 2
... ... Support Innovative Start-up Companies and Entrepreneurs in Communications and Communications Convergence , ... San Diego, CA (PRWEB) June ... of Cricket Communications, Inc., a leading provider of unlimited wireless services, today announce their ...
... Germany, June 17 , - MedITEX ... Medicine , - MedITEX from 28 June ... , The IT consulting company CRITEX, which ... in vitro fertilisation, MedITEX IVF,at the 25th Annual Meeting of the ...
... 16 Microfluidic Systems, a privately-held company, announced ... "Sonication to Selectively Lyse Different Cell Types". This ... extraction of male/female DNA from a mixed forensic ... of biological sample processes for analysis and identification. ...
Cached Biology Technology:San Diego Wireless Heavyweight Leap Wireless Supports New Start-up Incubator 2San Diego Wireless Heavyweight Leap Wireless Supports New Start-up Incubator 3San Diego Wireless Heavyweight Leap Wireless Supports New Start-up Incubator 4New IVF Software MedITEX to be Presented at the ESHRE Exhibition 2MicroFluidic Systems (MFSI) Receives Patent for Method to Selectively Process Different Biological Cell Types for Analysis. 2
...
... Bio-Plex maintenance, calibration, and validation ... custom 96-well plate used for ... calibration procedures using the Bio-Plex ... plate is for use with ...
Mynox is intended for research use only. Mynox is used for the elimination of Mycoplasma and Acholeplasma in cell and virus cultures, and other biologicals....
... system holds 48 x 0.2 ml tubes, or ... independently excites fluorescence (470-500 nm) for each well, ... light (523-543 nm and 540-700 nm). The system ... Peltier heat pumps provide superb thermal performance. System ...
Biology Products: