Navigation Links
Some astronauts at risk for cognitive impairment, animal studies suggest
Date:4/23/2014

Johns Hopkins scientists report that rats exposed to high-energy particles, simulating conditions astronauts would face on a long-term deep space mission, show lapses in attention and slower reaction times, even when the radiation exposure is in extremely low dose ranges.

The cognitive impairments which affected a large subset, but far from all, of the animals appear to be linked to protein changes in the brain, the scientists say. The findings, if found to hold true in humans, suggest it may be possible to develop a biological marker to predict sensitivity to radiation's effects on the human brain before deployment to deep space. The study, funded by NASA's National Space Biomedical Research Institute, is described in the April issue of the journal Radiation Research.

When astronauts are outside of the Earth's magnetic field, spaceships provide only limited shielding from radiation exposure, explains study leader Robert D. Hienz, Ph.D., an associate professor of behavioral biology at the Johns Hopkins University School of Medicine. If they take space walks or work outside their vehicles, they will be exposed to the full effects of radiation from solar flares and intergalactic cosmic rays, he says, and since neither the moon nor Mars have a planet-wide magnetic field, astronauts will be exposed to relatively high radiation levels, even when they land on these surfaces.

But not everyone will be affected the same way, his experiments suggest. "In our radiated rats, we found that 40 to 45 percent had these attention-related deficits, while the rest were seemingly unaffected," Hienz says. "If the same proves true in humans and we can identify those more susceptible to radiation's effects before they are harmfully exposed, we may be able to mitigate the damage."

If a biomarker can be identified for humans, it could have even broader implications in determining the best course of treatment for patients receiving radiot
'/>"/>

Contact: Stephanie Desmon
sdesmon1@jhmi.edu
410-955-8665
Johns Hopkins Medicine
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Future Astronauts May Be Exposed to Alzheimers Risk Factor
2. Maricopa Community Colleges to Host NASA Astronauts
3. Study finds astronauts hearts become more spherical in space
4. Stress contributes to cognitive declines in women with breast cancer, researcher says
5. Moffitt researchers find cancer therapies affect cognitive functioning among breast cancer survivors
6. Dartmouth researchers investigate the cognitive effects of athlete head impacts
7. Kessler Foundation scientists present cognitive research findings at MS dual symposium
8. Preventing or better managing diabetes may prevent cognitive decline, according to UCSF study
9. Scientists identify gene linked to facial, skull and cognitive impairment
10. Binge drinking increases the risk of cognitive decline in older adults
11. Hope for patients with HIV-associated cognitive impairment
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/29/2015)... TN (PRWEB) March 29, 2015 North ... several PT Online Continuing Education Courses . ... 10.0 hours of CME - TPTA, approval # 56399TX ... the evaluation of the shoulder complex - 10.5 hours ... Approved #56400TX , Examination and Treatment of the SI ...
(Date:3/28/2015)... Tucson, AZ. (PRWEB) March 28, 2015 ... according to a new study by researchers ... (HSPH). , Produced with the support of the Coffee ... the journal Molecular Psychiatry this past fall, the study—one ... a meta-analysis of genomic data from more than 120,000 ...
(Date:3/28/2015)... 28, 2015 Thousands of transvaginal ... by C.R. Bard, Inc. continue to move forward ... Court, Southern District of West Virginia, where Bernstein ... the Plaintiffs’ Steering Committee. According to an ... certain defendants named in those lawsuits leave to ...
(Date:3/28/2015)... An article in Fortune on Monday, March ... to organizations that deal with PCI (Payment Card Information); ... security, is worsening . Using numbers from Verizon’s ... category out of the twelve measured improved, barring one ... craziness that has gone on in the retail industry ...
(Date:3/28/2015)... (PRWEB) March 28, 2015 How best ... a growing field in orthopaedic medicine. While diagnostic hip ... to confirm the pain etiology, research presented today at ... ) Specialty Day suggests that pain relief from this ... hip surgery. , “Our study looked to assess ...
Breaking Medicine News(10 mins):Health News:How Coffee Habits Relate to Our Genetic Code and Enhancing the Caffeine Experience 2Health News:How Coffee Habits Relate to Our Genetic Code and Enhancing the Caffeine Experience 3Health News:Federal C.R. Bard Vaginal Mesh Lawsuits Move Forward, As Court Grants Defense Motion to Amend Responses to Master Complaint 2Health News:Federal C.R. Bard Vaginal Mesh Lawsuits Move Forward, As Court Grants Defense Motion to Amend Responses to Master Complaint 3Health News:Federal C.R. Bard Vaginal Mesh Lawsuits Move Forward, As Court Grants Defense Motion to Amend Responses to Master Complaint 4Health News:Businesses Dealing With PCI Falling Short On Regular Vulnerability Scans and Pen Testing 2Health News:Businesses Dealing With PCI Falling Short On Regular Vulnerability Scans and Pen Testing 3Health News:Businesses Dealing With PCI Falling Short On Regular Vulnerability Scans and Pen Testing 4Health News:Pain Injections for Hip Arthroscopy Patients May Not Predict Surgical Outcomes 2
... Hologic, Inc.,(Nasdaq: HOLX ), a leading developer, ... and surgical products dedicated to,serving the healthcare needs ... quarter and fiscal 2008 operating results on Tuesday, ... the release, management will,host a conference call on ...
... Credentialing Center (ANCC) has designated Geisinger Medical Center (GMC) ... conference call to hospital administrators, nurses and staff who ... elite group of only 15 Pennsylvania hospitals and ... achieved Magnet status. More than 6,000 hospitals are eligible ...
... Delaying, avoiding radiation could lessen long-term side effects, study ... Using chemotherapy alone, and delaying or avoiding radiation altogether, ... progressive low-grade glioma brain tumors, according to a multi-institutional ... tumor in children. If surgery can be performed, the ...
... ANN ARBOR, Mich.---The University of Michigan received $5 million ... world,s leading resource of high-quality experimental data sets of ... to a new level. , The resource will ... can predict the effectiveness of potential new drugs, said ...
... CT adds metabolic information from PET to traditional CT ... maximized workflow ... quick return on investment, MUNICH, Germany, Oct. 10 ... new concept in,integrated imaging that provides a premium imaging ...
... ... Front Line, PHILADELPHIA, Oct. 9 ... more than,590 customer service representatives (CSRs), by rewarding them with fun,healthy activities ... 4 million inquiries a year, IBC,s CSRs are more than,just busy -- ...
Cached Medicine News:Health News:Hologic, Inc. To Release Fourth Quarter and Fiscal 2008 Operating Results on Tuesday, November 11, 2008 2Health News:Geisinger Medical Center earns prestigious Magnet designation 2Health News:Chemo Alone Effective in Treating Kids' Brain Tumors 2Health News:U-M to house leading drug database 2Health News:Siemens Shapes the Future of Integrated Diagnostic Imaging 2Health News:Siemens Shapes the Future of Integrated Diagnostic Imaging 3Health News:Siemens Shapes the Future of Integrated Diagnostic Imaging 4Health News:Independence Blue Cross Celebrates Customer Service Week 2
(Date:3/27/2015)... , March 27, 2015 Levi & Korsinsky ... Inc. (NASDAQ: OHRP ) concerning possible violations of ... by the Company in connection with its study of ... http://zlk.9nl.com/ohr-pharmaceutical-ohrp or contact Joseph E. Levi, ... or by telephone at (212) 363-7500, toll-free: (877) 363-5972. ...
(Date:3/27/2015)... - Medicure Inc. (the "Company") (TSXV:MPH, OTCQB:MCUJF) announces today ... of an aggregate of 236,070 options to certain directors, ... Company pursuant to the Company,s Stock Option Plan. Of ... tenth anniversary of the date of grant, 5,000 are ... date of grant and 50,000 are set to expire ...
(Date:3/27/2015)... 27, 2015 /CNW Telbec/ - Russell Williams , ... Companies (Rx&D), welcomes the 2015-2016 Quebec Budget, noting the ... on the biopharmaceutical industry. However, the association is concerned ... "We commend the government,s intent to strive for a ... to promote Quebec,s economic development ...
Breaking Medicine Technology:Quebec 2015-2016 Budget: Rx&D welcomes fiscal discipline and biopharma working group, but the decrease in government spending on medicines is questioned 2Quebec 2015-2016 Budget: Rx&D welcomes fiscal discipline and biopharma working group, but the decrease in government spending on medicines is questioned 3
... May 1, 2012  Medical Alarm Concepts Holding, Inc. (OTCQB: ... several holders of its convertible debt. Under the terms ... cancelled, preventing a significant amount of common shareholder dilution. ... 13,750,000 million warrants, bringing the total number of warrants ...
... SAN DIEGO, May 1, 2012  Pfenex Inc. today ... Services (HHS), through the Biomedical Advanced Research and ... with the existing Pfenex contractual relationship begun in ... development of a robust Pf ēnex Expression ...
Cached Medicine Technology:MDHI in Agreement with Debt Holders - Portion of Convertible Debt and Additional 14M Warrants Cancelled -- Total of 101M Warrants Cancelled this Year 2
Suture Cutter, Open Ended, Left Notch...
Threaded cannula with cannulated obturator for use with Acufex Suture Punch; sterile packs, box of 10....
...
...
Medicine Products: