Sign up for Englemed updates from TwitterSign up for Englemed updates from Facebook
Contact Englemed
Our contact email address.
We can provide a specialist, tailored health and medical news service for your site.
Click here for more information
RSS graphic XML Graphic Add to Google
About Englemed news services - services and policies.
Englemed News Blog - Ten years and counting.
Diary of a reluctant allergy sufferer - How the British National Health Service deals with allergy.
BookshopFor books on women's health, healthy eating ideas, mental health issues, diabetes, etc click here
Copyright Notice. All reports, text and layout copyright Englemed Ltd, 52 Perry Avenue, Birmingham UK B42 2NE. Co Registered in England No 7053778 Some photos copyright Englemed Ltd, others may be used with permission of copyright owners.
Disclaimer: Englemed is a news service and does not provide health advice. Advice should be taken from a medical professional or appropriate health professional about any course of treatment or therapy.
Yoghurt may help prevent bowel cancer
Wed June 19th - Men who eat yoghurt at least twice a week appear to have a reduced risk of developing adenomas in the bowel, researchers report today. More
Large study links atrial fibrillation to dementia
Wed June 19th - Patients with atrial fibrillation face a raised risk of going on to develop dementia, researchers warn today. More
On 08/02/2018 David Kelly wrote:
Would you like to write a piece about this to be i... on Researchers unveil new pain re...
On 23/10/2017 Cristina Pereira wrote: on HIV breakthrough - MRC...
On 12/09/2017 Aparna srikantam wrote:
Brilliant finding! indeed a break through in under... on Leprosy research breakthrough...
On 01/07/2017 Annetta wrote:
I have been diagnosed with COPD for over 12 years.... on Seaweed plan for antimicrobial...
On 12/03/2017 Steph wrote:
The photo you have paired with this article is its... on 'Fat shaming' limits...

Space radiation gives leukaemia clue

Wednesday March 15th, 2017

Radiation exposure at levels encountered in deep space may increase the risk of leukaemia, scientists have warned.

The findings raise concerns about plans for human missions to Mars.

But they may help understanding of the ways in which radiation exposure may potentially increase the risk of leukaemia, say the scientists, led by Dr Christopher Porada, of the Wake Forest Institute for Regenerative Medicine, North Carolina, USA.

The team used funding from NASA, the National Aeronautics and Space Administration, in order to test human stem cells under exposure to specific forms of radiation.

They measured the effects of simulated solar energetic particles and galactic cosmic ray radiation on human hematopoietic stem cells from healthy donors of typical astronaut age (30 to 55 years). The cells were exposed to "Mars mission-relevant" doses of protons and iron ions.

These exposure levels "dramatically affected the health and function of the hematopoietic stem cells," the team reported in Leukemia recently.

"Radiation exposure at these levels was highly deleterious to cell function, reducing their ability to produce almost all types of blood cells, often by 60% to 80%.

"This could translate into a severely weakened immune system and anaemia during prolonged missions in deep space."

They point out that the current study is significant because it shows that radiation affected cells at the stem cell level, causing gene linked to the hematopoietic process, dramatically reducing the ability of hematopoietic stem cells to give rise to mature blood cells.

Dr Porada said: "We found that genetic damage to hematopoietic stem cells directly led to leukaemia. Secondly, radiation also altered the ability of hematopoietic stem cells to generate T and B cells, types of white blood cells involved in fighting foreign 'invaders' like infections or tumour cells."

Rodman, C. et al. In vitro and in vivo assessment of direct effects of simulated solar and galactic cosmic radiation on human hematopoietic stem/progenitor cells. Leukemia 24 November 2016; doi:10.1038/leu.2016.344 [abstract]

Tags: Cancer | North America | Traveller Health

Printer friendly page Printer friendly page

Comment on this article:

<a>,<b> & <p> tags allowed
Please enter the letters displayed:
(not case sensitive)