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Analysis of the birefringence of the smooth muscle anococcygeus of the rat, at rest and in contraction. I.

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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.

Document type Article de périodique (Journal article) – Comparative Study, Journal Article
Publication date 1988
Journal information "Journal of muscle research and cell motility" - Vol. 9, no. 1, p. 9-17 (1988)
Peer reviewed yes
issn 0142-4319
Publication status Publié
Affiliation UCL
MESH Subject Anal Canal - analysis - physiology ; Animals ; Birefringence ; Chemistry ; Coccyx - analysis - physiology ; Colon - analysis - physiology ; Male ; Muscle Contraction ; Muscle Relaxation ; Muscle, Smooth - analysis - physiology ; Rats ; Rats, Inbred Strains
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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)
Permanent URL http://hdl.handle.net/2078.1/11788