Godfraind-De Becker, A
Gillis, Jean-Marie
[UCL]
The birefringence of the rat anococcygeus muscle was measured at rest and in contraction. A large increase (+30%) of the optical retardation was observed in muscles fully stimulated by Noradrenaline, in isometric conditions. This was associated with a reduction of the muscle thickness (-12%), so that the birefringence increased by 48%. These changes were reversed upon relaxation. The relationship between the birefringence increase and the mechanical response was investigated as a function of time and of Noradrenaline concentration. Possible origins for the birefringence increase are considered: an increased density of birefringent material, mainly filaments, seems the most likely explanation of the results.
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Bibliographic reference |
Godfraind-De Becker, A ; Gillis, Jean-Marie. Analysis of the birefringence of the smooth muscle anococcygeus of the rat, at rest and in contraction. I.. In: Journal of muscle research and cell motility, Vol. 9, no. 1, p. 9-17 (1988) |
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http://hdl.handle.net/2078.1/11788 |