Navigation Links
Holding breath for several minutes elevates marker for brain damage
Date:8/3/2009

BETHESDA, Md. (August 4, 2009) Divers who held their breath for several minutes had elevated levels of a protein that can signal brain damage, according to a new study from the Journal of Applied Physiology. However, the appearance of the protein, S100B, was transient and leaves open the question of whether lengthy apnea (breath-holding) can damage the brain over the long term.

"The results indicate that prolonged, voluntary apnea affects the integrity of the central nervous system, and may have cumulative effects," the Swedish researchers said. The release of S100B into the blood suggests that holding one's breath for a long time disrupts the blood-brain barrier, they said.

The concern is that repetitive exposures to severe hypoxia (lowered oxygen supply), such as that experienced by individuals training and competing in static apnea diving events, could cause neurological damage over time. The researchers recommended further research on free divers that would begin early in their careers and follow them for years to monitor their neurological function.

The study is "Increased serum levels of the brain damage marker S100B after apnea in trained breath-hold divers: a study including respiratory and cardiovascular observations." The researchers are Johan P.A. Andersson, Mats H. Linr and Henrik Jnsson, of Lund University in Sweden. The American Physiological Society published the study.

Free diving is a tradition

There is a tradition of breath-hold diving in Japan and some other parts of the world that goes back hundreds of years, although the occupation has been dying out. These divers harvest seaweed, shellfish and other growth from the sea bottom, diving dozens of times per day. Some divers routinely dive to depths of 90 feet on a single breath while others dive in the 15-30 foot range.

More recently, breath-hold diving has become a competitive sport. Competitive events include how long div
'/>"/>

Contact: Christine Guilfoy
cguilfoy@the-aps.org
301-634-7253
American Physiological Society
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Bonefish census reveals population holding steady
2. Catcher Holdings Inc. Lands Contract for Initial Deployments at Nine Homeland Security and State Government Agencies
3. MIT Holding, Georgia Southern University, and MEVLABS successfully test the PROVECTOR
4. When children have breathing problems
5. Methane-eating microbes can use iron and manganese oxides to breathe
6. A breath mint made from... coffee?
7. Effects of maternal exercise on fetal breathing movements
8. Effects of maternal exercise on fetal breathing movements
9. Microscope reveals how bacteria breathe toxic metals
10. Stomach ulcer bug causes bad breath
11. OSAs ISP launches with research on breathing disorders and congenital heart defects
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... , Nov. 19, 2014  Earlier this year ... York College, and one of the most prolific inventors ... that are transmitted from Smartphones to third party agencies. ... and has one of the earliest known patents in ... usage in the military, child care, elder care and ...
(Date:11/21/2014)... SAN JOSE, Calif. , Nov. 20, 2014 /PRNewswire/ ... a global leader in microcontroller (MCU) and touch technology ... digital temperature sensors with the widest V ... family delivers higher temperature accuracy and faster I 2 ... nonvolatile registers and serial EEPROM memory making them ideal ...
(Date:11/18/2014)... , Nov. 17, 2014 The Parenteral Drug ... U.S. regulatory agencies will speak and at least seven more ... Conference at the Omni Shoreham Hotel in Washington ... once again to have significant support from the regulatory agencies ... Europe in our effort to help advance ...
Breaking Biology News(10 mins):Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4FDA's Janet Woodcock, EMA's Emer Cooke Headline PDA Quality Metrics Conference 2
... protein research and an extensive investigation of historical literature, ... elephants is actually an African elephant. In a ... Society , led by Enrico Cappellini and Thomas Gilbert ... represent the species, which is likely the remains of ...
... year the Green Project Awards acknowledges projects that ... sustainability. This year, the awards distinguished with ... project SMARTGALP at the tracks Mobilization Initiative of ... are the result of collaborations with MIT Portugal ...
... LOUIS): The Missouri Botanical Garden was recently awarded a $449,641 ... to test new means of using crowd sourcing and gaming ... Library (BHL). Grant funding begins in December 2013 and ends ... Cornell University and the New York Botanical Garden on the ...
Cached Biology News:Researchers unmask centuries-old elephant imposter 2MIT Portugal is a partner of 2 projects distinguished by the Green Project Awards 2Missouri Botanical Garden aims to improve access to digital texts through online gaming 2
(Date:12/17/2014)... (PRWEB) December 17, 2014 Gene ... that it has entered into a technology access ... (ADM) to apply DNA2.0’s proprietary protein engineering technology, ... process. , “We are extremely excited that the ... platform. This proprietary bioengineering technology has now ...
(Date:12/17/2014)... SOUTH SAN FRANCISCO, Calif. , Dec. 17, ... positive results of a Phase 2 study evaluating ... for the treatment of patients with severe, chronic ... the current standard of care, including topical steroids ... endpoint was percent change in Visual Analog Scale ...
(Date:12/15/2014)...  GlassesOff Inc. (OTCBB: GLSO) announced today the appointment ... director of the Company,s Board of Directors. ... its CEO until its acquisition by Stanley Black ... Recognized as the inventor of the first Wi-Fi-based Active ... -based RFID solutions focused on improving operational efficiency, safety ...
(Date:12/13/2014)... (PRWEB) December 12, 2014 Clarassance, a ... announced its new name: Therabron Therapeutics , Inc. ... and bronchioles (a type of structure in the lungs ... company’s mission to develop novel protein therapeutics for the ... directors decided to change the name to mark the ...
Breaking Biology Technology:ADM and DNA2.0 Enter Into Protein Engineering Technology Access and Service Agreement 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 3Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 4AeroScout Founder Joins GlassesOff's Board of Directors 2AeroScout Founder Joins GlassesOff's Board of Directors 3Maryland-based Biotech Company's Path Forward in Treating Respiratory Diseases Sparks Name Change 2
... Calif., Jan. 2, 2012 Renowned biochemist Michael A. ... of The Scripps Research Institute January 1, succeeding Richard ... than two decades. (Photo:  http://photos.prnewswire.com/prnh/20120102/DC28698 ... advance the institute,s mission, creating knowledge in the biosciences ...
... . , Even the costliest oriental carpets have ... tiny mistakes in their fine carpets, because only God has ... industry would like to have them are as yet in ... headed by Dr. Markus Lackinger from the Technische Universitt Mnchen ...
... Americans are resolving to address financial issues or lose weight ... looking to find answers to an important question – who ... was commissioned by Identigene, the largest direct-to-consumer DNA paternity testing ... only paternity test available at the drug store, reveals that ...
Cached Biology Technology:Michael A. Marletta Takes Office as New President of Scripps Research Institute 2The art of molecular carpet-weaving 2Survey Reveals Paternity Questions Loom for More Than One in 10 Americans 2Survey Reveals Paternity Questions Loom for More Than One in 10 Americans 3
Wheat Germ Agglutinin (WGA) PS SPA Imaging Bead, 2 g. Category: Leadseeker Beads....
... cells (BTI-TN-5B1-4) derived from Trichoplusia ni ... to be capable of expressing significantly ... compared to other insect cells. High ... doubling time as adherent cultures- Quick adaptation ...
Sf9 cells derived from Spodoptera frugiperda ovarian cells (Sf21 cells) are commonly used to isolate and propagate recombinant AcMNPV viral stocks and to produce recombinant proteins....
... Insect Cell Medium is optimized for serum-free ... Cells. In this protein-free medium, Sf9 cultures ... 107 cells/ml with viabilities above 95%. This ... where color from X-gluc staining of pBACgus ...
Biology Products: