HOME >> BIOLOGY >> NEWS
Remarkable physiology allows crucian carp to survive months without oxygen

BETHESDA, MD (August 25, 2006) Cooling water temperature during the fall prompts the crucian carp to store vast amounts of glycogen in its brain to keep the brain functioning and healthy from February to April, when there is no oxygen left in the ponds, a new study finds.

The study from Finland found that the amount of glycogen in the brain was at its peak in February, when the pond becomes nearly depleted of oxygen (anoxic). Glycogen, an energy supply that the carp brain uses to survive anoxia, was 15 times higher in February, compared to brain glycogen content in July, when oxygen in the pond is at its peak.

At the same time, the carp brain's sodium-potassium pump activity, a measure of energy demand, decreased 10-fold to its low point between February and April, said the study's lead author, Vesa Paajanen. Taken together, these findings indicate the carp extends the amount of time it can survive without oxygen in frigid water by 150-fold. Further, the study found that it was the dropping water temperature that sets these physiological changes into motion.

"This is the first study to show that sodium pump activity is controlled by water temperature, not by the amount of oxygen available in the water" Paajanen said. The findings help explain how the carp pulls off the remarkable physiological feat that allows its brain to survive for months in a nearly anoxic state.

There is currently no direct tie between these finding and humans. However, physiologists only recently realized the human brain contains glycogen, so who knows? Maybe this line of research will one day be important for humans to survive anoxia, Paajanen said.

The study, "Seasonal changes in glycogen content and Na-K-ATPase activity in the brain of the crucian carp," by Matti Vornanen and Vesa Paajanen of the University of Joensuu in Joensuu, Finland appears in the American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. Th
'"/>

Contact: Christine Guilfoy
cguilfoy@the-aps.org
301-634-7253
American Physiological Society
25-Aug-2006


Page: 1 2 3

Related biology news :

1. Oxford physiology professor earns APS Walter B. Cannon Award
2. Animal physiology conference sheds light on human physiology
3. Finally, JAP study shows headdown bedrest precisely mimics human physiology in spaceflight
4. Adaptation to oxygen deprivation elucidates tumor physiology
5. Second low-oxygen pathway hints at cancer, cardiovascular disease physiology
6. Nine minority physiology grad students each get $18,000 Porter Fellowship from APS
7. $2,000 Katrina grants for New Orleans physiology students, post-docs offered through APS
8. Thumbnail sampler of 10 diverse physiology papers from IUPS 2005
9. 14 highlighted physiology papers from IUPS 2005: From genomics to functions
10. Society for Psychophysiology Research
11. Putting physiology into the Nobel Prize: 2004 marks 100th anniversary of Pavlovs award

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/14/2017)... , June 15, 2017  IBM (NYSE: IBM ) ... international tech event dedicated to developing collaboration between startups and ... on June 15-17. During the event, nine startups will showcase ... value in various industries. France ... the international market, with a 30 percent increase in the ...
(Date:5/16/2017)... , May 16, 2017  Veratad Technologies, LLC ( ... online age and identity verification solutions, announced today they ... Conference 2017, May 15 thru May 17, 2017, in ... and International Trade Center. Identity impacts ... and in today,s quickly evolving digital world, defining identity ...
(Date:5/6/2017)... RAM Group , Singaporean based ... in biometric authentication based on a novel  ... to perform biometric authentication. These new sensors are based on ... Ram Group and its partners. This sensor will have ... and security. Ram Group is a next generation ...
Breaking Biology News(10 mins):
(Date:8/15/2017)... ... August 15, 2017 , ... Kapstone Medical is proud ... successes helping medical technology companies and inventors develop and safeguard their latest innovations. ... engineering firm with a portfolio of clients in the United States and around the ...
(Date:8/15/2017)... ... August 15, 2017 , ... Pittcon is pleased to ... and scientific instruments. This year’s symposium, organized by the Pittcon 2018 program chair, ... Bioanalytical Applications.” This dynamic presentation will discuss novel ionization processes, high throughput IMS-MS ...
(Date:8/15/2017)... ... August 15, 2017 , ... Kenall, a leader in sealed ... stay tightly sealed and perform efficiently for years. The downlights are ideal for ... aren't enough, such as: hospitals; behavioral health facilities; cleanrooms; containment areas; food and ...
(Date:8/15/2017)... ... August 15, 2017 , ... Coffea ... various biotic and abiotic factors. During this educational webinar, participants will learn about ... well as gain a better understanding of how genomics is important for coffee ...
Breaking Biology Technology:
Cached News: