Banking stem cells could save Japan nuclear workers

CHICAGO, (Reuters) – Health officials should  collect blood from workers at the crippled Fukushima Daiichi  nuclear power plant in case they are accidentally exposed to  high levels of radiation and need a stem cell transplant,  Japanese researchers said yesterday.

They said gathering blood from the workers would give them  a ready source of their own stem cells that could help rebuild  their bone marrow should they become exposed to high levels of  radiation.

“The danger of a future accidental radiation exposure is  not passed, since there has been a series of serious  aftershocks even this April,” Dr Shuichi Taniguchi of Toranomon  Hospital in Tokyo and Dr Tetsuya Tanimoto of the Japanese  Foundation for Cancer Research wrote in the Lancet medical  journal.

A series of strong aftershocks this week has rattled  eastern Japan, slowing the recovery effort at the Fukushima  Daiichi plant due to temporary evacuations of workers and power  outages.

Tokyo Electric Power Co said this week the situation at the  nuclear plant, wrecked by a 15-meter (49.2-foot) tsunami on  March 11, had stabilized. The crisis is now rated par with the  world’s worst nuclear accident, the 1986 Chernobyl disaster,  although the total release of radiation at Chernobyl was far  greater.

The researchers say transplant teams are standing by in  Japan and Europe to collect and store the nuclear workers’  cells, but so far the Nuclear Safety Commission of Japan is  balking because it would cause a “physical and psychological  burden for nuclear workers,” the team wrote.

Collecting cells from the workers has several advantages  over donated cells, which require finding a matching donor and  carry the risk of rejection.