---------- Forwarded message ---------- Research: Aging Stem Cells
Elderly people tend to suffer more infections and have a greater chance of developing myeloid leukemia than young people. Basic research on mice has suggested that the cause may be the aging of blood-producing stem cells. As reported in the July 9 issue of Science News, a study team led by Derrick Rossi, PhD, Department of Pathology at Stanford University first killed off the blood-making stem cells in young and old mice with radiation. Stem cells from young donor mice were then transplanted into the older irradiated group. The young mice received stem cells from elderly donors. After several weeks the older mice who received transplants were producing different types of blood cells that reflected the young, donor mice profile. The younger mice with older stem cell transplants had significantly fewer lymphoid blood cells (which help cells battle infection) and more genes responsible for producing myeloid cells, many of which are associated with the development of myeloid leukemia. Rossi's team concluded in an article in Proceedings of the National Academy of Sciences that this shift from lymphoid-cell production to myeloid-cell production brought on by the aging of stem cells could be responsible for the increases in both infections and in the increased risk of leukemia. . ------------------------ Yahoo! Groups Sponsor --------------------~--> <font face=arial size=-1><a href="http://us.ard.yahoo.com/SIG=12ku8cuj3/M=362329.6886305.7839473.1589681/D=grphealth/S=1705061628:TM/Y=YAHOO/EXP=1124426346/A=2894322/R=0/SIG=11hnli5rs/*http://www.youthnoise.com/page.php?page_id=1997";>AIDS in India: A "lurking bomb." Click and help stop AIDS now</a>.</font> --------------------------------------------------------------------~-> New! Sign up for local CML support group meetings in your local community at http://cml.meetup.com Apply for Commercial Real Estate loans online and submit your deal to dozens of hungry lenders in just minutes. Loan programs for all types of business and commercial real estate. Apply anytime at http://realestatezoo.com CML (Chronic Myelogenous Leukemia Support List) --------------------------------- Part Of CMLHope.Com An International Community Of CML Patients For more information: http://cmlhope.com Post Message: [email protected] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] Change To No Mail/Web: [EMAIL PROTECTED] Change To Digest: [EMAIL PROTECTED] Change To Email: [EMAIL PROTECTED] List Help: [EMAIL PROTECTED] CML Group Web Site http://groups.yahoo.com/group/CML Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/CML/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
