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A correlation between the effects of anti‐mitotic drugs on microtubule assembly in vitro and the inhibition of axonal transport in noradrenergic neurones.
Author(s) -
Banks P,
Till R
Publication year - 1975
Publication title -
the journal of physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.802
H-Index - 240
eISSN - 1469-7793
pISSN - 0022-3751
DOI - 10.1113/jphysiol.1975.sp011144
Subject(s) - colchicine , podophyllotoxin , microtubule , axoplasmic transport , tubulin , in vitro , griseofulvin , microbiology and biotechnology , chemistry , biophysics , mitosis , pharmacology , biology , biochemistry , stereochemistry , genetics , medicine , pathology
1. Podophyllotoxin, colchicine and griseofulvin inhibit the intra‐axonal movement of noradrenaline storage vesicles in cat hypogastric nerve/inferior mesenteric ganglion preparations maintained in vitro, cause the disappearance of axonal microtubules and inhibit the assembly of microtubules from tubulin in vitro. The order of potency of the three effects is podophyllotoxin greater than colchicine greater than griseofulvin. 2. Lumicolchicine is without effect on the three parameters and does not interfere with the binding of tritiated colchicine to tubulin. 3. Podophyllotoxin causes a more rapid loss of microtubules from axons than the same concentration of colchicine. 4. The experiments provide strong evidence that microtubules are components of the system responsible for the intra‐axonal migration of noradrenaline storage vesicles.