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KMID : 0364219810240040189
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Korean Journal of Zoology
1981 Volume.24 No. 4 p.189 ~ p.200
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Effects of Ultraviolet Irradiation on the Differentiation of Cultured Chicken Pectoralis Muscle Cells
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Chung Hae-Moon
Nham Sang-Uk
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Abstract
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Drastic alterations in myogenesis could be induced by ultraviolet irradiation of the myogenic cells derived from 12 day old chick embryo skeletal muscle. The effects of irradiation on various aspects, including cell division, transformation to myotubes, and morphology of myoblasts and myotubes, were examined. Irradiated cells were smaller in size, and only few cells transformed resulting in smaller size of myotubes with a narrow width. Both the inhibiting actions to cell division and to fusion were more striking when irradiated at earlier stages after plating. As well, cell division and fusion were inhibited more effectively with increasing UV dose and excessive amount caused cell death. A lowering cell density was thought to account for the decrease in myogenesis and possible reasons for the decrease in the capacity for fusion were discussed in view of the results presented in this report and of the findings from other laboratories.
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