POTENTIATION OF MYOBLAST TRANSPLANTATION BY HOST MUSCLE IRRADIATION IS DEPENDENT ON THE RATE OF RADIATION DELIVERY
1999
Transplantation of muscle precursor cells (mpc) has been suggested as a treatment for myopathies, such as Duchenne muscular dystrophy. Irradiation of skeletal muscle with 16–20 Gy prevents muscle regeneration and also augments muscle formation from implanted muscle precursor cells (mpc). However, when mdx nu/nu mouse muscles are preirradiated at 0.73 Gy/min rather than at 1.29 Gy/min prior to their injection with normal mpc, significantly more muscle fibres of donor origin are formed. This suggests that the rate at which irradiation is delivered has a physiological effect on the muscle. Although it would not be feasible to irradiate a patient's muscles prior to mpc implantation, once the factor(s) which are altered in irradiated muscle have been identified, it might be possible to use these to increase the success of myoblast transplantation.
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