Axonal Transport, Degeneration, and Regeneration in the Visual System of the Goldfish

ISBN-13: 9783540103363 / Angielski / Miękka / 1981 / 96 str.

Hartwig Wolburg

Opis

References ............................... 76 Subject Index ............................. 93 VIII Acknowledgments This study was funded by the Deutsche Forschungsgemeinschaft. I am indebted to Prof. Dr. W. Schlote for helpful advice and numerous discussions. I am also grateful to Dr. G. Kurz-Isler for her generous help in problems dealing with electron microscopy and to Mrs. B. Sabrowski for her careful preparation of the manuscript. The careful translation of T.C. Telger is gratefully acknowledged. The translation was financially supported by the Erwin Riesch Foundation. IX 1 Introduction One of the basic principles underlying the efficiency and adaptability of cellular meta- bolism is the structural compartmentalization of the cell. Only through compartmenta- lization can reaction components be kept apart prior to their reaction, isolated from other "reaction spaces" during the course of their reaction, and the reaction products incorporated into designated structures or transported to remote parts of the cell. Thus, the partitioning of the cellular substance into countless membranous spaces corresponds to the spatial segregation of reaction components, and the dynamics of intracellular membrane systems is an expression of ever-changing equilibrium condi- tions and the continuous formation of new reaction spaces. It has been shown with some certainty that many of the processes in membrane dynamics can take place only with the aid of contractile proteins such as actin, myosin, and tubulin.

Spis treści

1 Introduction.- 2 Material and Methods.- 3 Results.- 3.1 Morphology of the Goldfish Visual System.- 3.1.1 Retina.- 3.1.2 Optic Nerve and Optic Tract.- 3.1.3 Optic Tectum.- 3.2 Axonal Transport.- 3.2.1 Rapid Axonal Transport.- 3.2.2 Effect of Ouabain on Rapid Transport.- 3.2.3 In Vitro Investigations of Rapid Axonal Transport.- 3.2.4 Slow Axonal Transport.- 3.2.5 Effect of Ouabain on Slow Transport.- 3.2.6 Transcellular Transport.- 3.3 Wallerian Degeneration in the Visual System.- 3.3.1 Wallerian Degeneration After Retrobulbar Nerve Crush.- 3.3.2 Wallerian Degeneration After Intraocular Injection of 3 • 10-5M Ouabain.- 3.3.3 Wallerian Degeneration After Intraocular Injection of 3 • 10-6M Ouabain.- 3.4 Regeneration in the Visual System.- 3.4.1 Processes Following Retrobulbar Optic Nerve Crush.- 3.4.2 Regeneration after Intraocular Injection of 3 • 10-6M Ouabain.- 4 Discussion.- 4.1 Rapid and Slow Axonal Transport as the Basis of Structural Metabolism in the Nerve Fiber.- 4.1.1 Mechanism of Axonal Transport.- 4.1.2 Transported Materials.- 4.1.3 Dependence of Axonal Transport on the Perikaryon.- 4.2 Wallerian Degeneration.- 4.3 Regeneration of Central Axons.- 4.4 Transcellular Interactions in the Nervous System.- 4.4.1 Interactions Between Axon and Glia.- 4.4.2 Transsynaptic Interactions.- 5 Summary.- References.