Navigation Links
Reversing blood and freshening it up
Date:3/25/2013

The blood of young and old people differs. In an article published recently in the scientific journal Blood, a research group at Lund University in Sweden explain how they have succeeded in rejuvenating the blood of mice by reversing, or re-programming, the stem cells that produce blood.

Stem cells form the origin of all the cells in the body and can divide an unlimited number of times. When stem cells divide, one cell remains a stem cell and the other matures into the type of cell needed by the body, for example a blood cell.*

"Our ageing process is a consequence of changes in our stem cells over time", explained Martin Wahlestedt, a doctoral student in stem cell biology at the Faculty of Medicine at Lund University, and principal author of the article.

"Some of the changes are irreversible, for example damage to the stem cells' DNA, and some could be gradual changes, known as epigenetic changes, that are not necessarily irreversible, even if they are maintained through multiple cell divisions. When the stem cells are re-programmed, as we have done, the epigenetic changes are cancelled."**

The discovery that forms the basis for the research group's method was awarded the Nobel Prize in Medicine last year.

The composition of blood is one example of how it ages; blood from a young person contains a certain mix of B- and T-lymphocytes and myeloid cells.***

"In older people, the number of B- and T-lymphocytes falls, while the number of myeloid cells increases", said Martin Wahlestedt.

When an elderly person is affected by leukaemia, the cancer often has its origin in the myeloid cells, of which the elderly have more. Being able to 're-start' the blood, as Martin and his colleagues have done in their studies on mice, therefore presents interesting possibilities for future treatment.

"There is a lot of focus on how stem cells could be used in different treatments, but all that they are routinely used for in clinical work today is bone marrow transplants for diseases where the blood and immune systems have to be regenerated", said Martin Wahlestedt, continuing:

"A critical factor that gives an indication of whether the procedure is going to work or not is the age of the bone marrow donor. By reversing the development of the stem cells in the bone marrow, it may be possible to avoid negative age-related changes."

Even if the composition of the blood in old and young mice is remarkably like that in young and elderly people, Martin Wahlestedt stressed that the science is still only at the stage of basic research, far from a functioning treatment. The research group is pleased with the results, because they indicate that it may not primarily be damage to DNA that causes blood to age, but rather the reversible epigenetic changes.


'/>"/>
Contact: Martin Wahlestedt
Martin.Wahlestedt@med.lu.se
46-462-220-313
Lund University
Source:Eurekalert

Related medicine news :

1. Diet Can Lower Blood Pressure As Much As Taking A Medication, From The March 2013 Harvard Men's Health Watch
2. NuvaRing Blood-Clotting Claims Now Being Investigated by Resource4thePeople Attorneys
3. New method developed to expand blood stem cells for bone marrow transplant
4. Blacks More Likely to Get Amputations Due to Blocked Blood Flow: Study
5. UC Davis research advances efforts to prevent dangerous blood clots
6. PCL Alverno Laboratories Launches Blood Test to Aid in the Early Detection of Lung Cancer
7. High Blood Pressure May Add to Alzheimers Risk, Study Finds
8. Experts Question Use of Ankle Blood Pressure to Gauge Heart Risks
9. Study Probes Use of Filter Device to Stop Deadly Blood Clots
10. Blood levels of fat cell hormone may predict severity of migraines
11. Vitamin D Supplements Tied to Lower Blood Pressure in Blacks
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/9/2016)... ... ... Cellairis is a worldwide mobile device and computer repair franchise that is ... and Samsung Galaxy devices with premium parts and accessories. Cellairis has recently set-up for ... for customers. While customers do their shopping, Cellairis can accomplish a number of mobile ...
(Date:12/9/2016)... (PRWEB) , ... December 09, 2016 , ... The ... Drug Dependence, Inc. (NCADD) is recommending the film Whispering Spirits and ... the District of Columbia as an education tool in the war against teen drug ...
(Date:12/9/2016)... , ... December 09, 2016 , ... Mediaplanet today announces ... organ transplantation while encouraging readers to sign up as an organ donor for the ... transplant. , An organ donor can save up to 8 saves through organ ...
(Date:12/9/2016)... ... December 09, 2016 , ... "I had a terrible ... from Winchester, Va. "I thought that if the nebulizer had a more child-friendly design, ... fearing them." , He developed the patent-pending NEBY to avoid the need to deliver ...
(Date:12/8/2016)... Tampa, FL (PRWEB) , ... December 08, 2016 ... ... been awarded accreditation with distinction by the Undersea and Hyperbaric Medical Society (UHMS), ... patients with advanced care and patient safety. Only a few hospitals and facilities ...
Breaking Medicine News(10 mins):
(Date:12/8/2016)... 2016 Australia Ophthalmic Lasers Market Outlook to ... Lasers Market Outlook to 2022", provides key market data ... value, in millions of US dollars, volume (in units) ... Lasers, Femtosecond Lasers and YAG Lasers. The report ... each of these market segements, and global corporate-level profiles ...
(Date:12/8/2016)... , Dec. 8, 2016 KEY FINDINGS ... poised to grow in 2017-2023. Various reasons for growth ... obese population, higher incidences of chronic diseases, high recovery ... mobility aid services. Medical lifting sling refers to ... with limited mobility. These slings connect to the lift ...
(Date:12/8/2016)... 8, 2016 Research and Markets has announced the addition ... their offering. ... This report analyzes the worldwide markets for Endodontic Supplies in US$ ... , Japan , Europe , ... World. Annual estimates and forecasts are provided for the period 2015 ...
Breaking Medicine Technology: