Summary
The normal ultrastructure of rat substantia nigra was investigated. Special attention was paid to the different types of boutons, and the mode of termination of the striatonigral connection was examined. Two different types of nigra neurons with deep nuclear membrane indentations were observed. The synaptic organization of rat substantia nigra is very complex. Six types of boutons, with many characteristics, could be differentiated: pleomorphicvesicle boutons (40%), elongated-vesicle boutons (10%), small-round-vesicle boutons (10%), large-round-vesicle boutons (20%), “clear-terminal” (15%) and dense-core-vesicle boutons (about 5%). Vesicle-containing dendrites were observed entering dendro-dendritic synapses. One to four days after large unilateral striatal lesions were made, a great number of degenerating boutons were seen in the ipsilateral substantia nigra, while the contra-lateral substantia nigra was entirely free of degeneration. The newly defined pleomorphic-vesicle boutons were found almost exclusively in the process of degeneration. The neuronal origin of the other bouton types is discussed.
Similar content being viewed by others
References
Bak, I. J.: The ultrastructure of the substantia nigra and caudate nucleus of the mouse and the cellular localization of catecholamines. Exp. Brain Res. 3, 40–57 (1967)
Bak, I. J., Hassler, R.: Wirkung von Iproniazid und 1-Dopa auf die dense core vesicles in der Substantia nigra bei der Maus. Naturwissenschaften 54, 47 (1967)
Bak, I. J., Hassler, R., May, B., Westermann, E.: Morphological and biochemical studies on the storage of serotonin and histamin in blood platelets of the rabbit. Life Sci. 6, 1133–1146 (1967)
Blocq, P., Marinesco, G.: Sur un cas de tremblement parkinsonien hémiplegique, symptomatique d'une tumeur du pédoncule cérébral. C. R. Soc. Biol. (Paris) 5, 105–111 (1893)
Brissaud, E.: Leçons sur les maladies nerveuses (Salpétrière, 1893–1894) recueillies et publiées par Henry Meige. Paris: Masson & Cie, 1895
Edinger, L.: Vorlesungen über den Bau der nervösen Zentralorgane, 8. Aufl., Bd. I. Leipzig 1911
Famiglietti, E. V.: Dendro-dendritic synapses in the lateral geniculate nucleus of the cat. Brain Res. 20, 181–191 (1970)
Gray, E. G.: Axo-somatic and axo-dendritic synapses of the cerebral cortex: An electron microscope study. J. Anat. (Lond.) 93, 420–433 (1959)
Grofová, I., Rinvik, E.: An experimental electron microscopic study on the striatonigral projection in the cat. Exp. Brain Res. 11, 249–262 (1970)
Gulley, R. L., Smithberg, M.: Synapses in the rat substantia nigra. Tissue and Cell 3, 691–700 (1971)
Gulley, R. L., Wood, R. L.: The fine structure of the neurons in the rat substantia nigra. Tissue and Cell 3, 675–690 (1971)
Hajdu, F., Bak, I. J., Hassler, R.: Degeneration strio-nigraler Synapsen im elektronenmikroskopischen Längsschnitt der Substantia nigra bei der Ratte. Abstr. Nr. 50; 68. Vers. Anat. Ges., Lausanne 1973
Hassler, R.: Zur Pathologie der Paralysis agitans und des postencephalitischen Parkinsonismus. J. Psychol. Neurol. (Lpz.) 48, 387–476 (1938)
Hassler, R.: The pathological and pathophysiological basis of tremor and parkinsonism. Proc. 2. Internat. Congr. Neuropathol., London, vol. I, p. 29–48, 1955
Hassler, R., Bak, I. J.: Submikroskopische Catecholaminspeicher als Angriffspunkte der Psychopharmaka Reserpin und Mono-Amino-Oxydase-Hemmer. Nervenarzt 37, 493–498 (1966)
Hassler, R., Bak, I. J.: Unbalanced ratios of striatal dopamine and serotonin after experimental interruption of strionigra connections in rat. In: Third Symposium on Parkinson's Disease (Gillingham, F. J., Donaldson, I.L.M. eds.), pp. 29–37 Edinburgh-London: E. & S. Linvingstone Ltd. 1969
Kemp, J. M.: The termination of strio-pallidal and strio-nigral fibres. Brain Res. 17, 125–128 (1970)
Kim, J. S., Bak, I. J., Hassler, R., Okada, Y.: Role of gamma-aminobutyric acid (GABA) in the extrapyramidal motor system. 2. Some evidence for the existence of a type of GABA-rich strio-nigral neurons. Exp. Brain Res. 14, 95–104 (1971)
Morest, D. K.: Dendrodendritic synapses of cells that have axons: The fine structure of the Golgi type II cell in the medial geniculate body of the cat. Z. Anat. Entwickl.-Gesch. 133, 216–246 (1971)
Parizek, J., Hassler, R., Bak, I. J.: Light and electron microscopic autoradiography of substantia nigra of rat after intraventricular administration of tritium labelled norepinephrine, dopamine, serotonin and the precursors. Z. Zellforsch. 115, 137–148 (1971)
Pasik, P., Pasik, T., Hámori, J., Szentágothai, J.: Golgi type II interneurons in the neuronal circuit of the monkey lateral geniculate nucleus. Exp. Brain Res. 17, 18–34 (1973)
Precht, W., Yoshida, M.: Blockage of caudate-evoked inhibition in the substantia nigra by picrotoxin. Brain Res. 32, 229–233 (1971)
Riese, W.: Beiträge zur Faseranatomie der Stammganglien. J. Psychol. Neurol. (Lpz.) 31, 81–122 (1924)
Rinvik, E., Grofová, I.: Observations on the fine structure of the substantia nigra in the cat. Exp. Brain Res. 11, 229–248 (1970)
Schwyn, R. C., Fox, C. A.: A Golgi and electron microscopic study of the substantia nigra in Macaca mulatta and Saimiri sciureus. Anat. Rec. 163, 342 (1969)
Soemmering, S. T.: Hirnlehre und Nervenlehre. Frankfurt: Varrentrapp 1791
Trétiakoff, C.: Contribution à l'étude de l'anatomie pathologique du locus niger de Soemmering avec quelques déductions relatives à la pathogénie des troubles du tonus musculaire et de la maladie de Parkinson. Thèse No 293, Paris, 1919
Vicq d'Azyr, F.: Traité d'anatomie et de physiologie, p. 72, 81, 96. Paris 1786
Vogt, C., Vogt, O.: Sitz und Wesen der Krankheiten im Lichte der topistischen Hirnforschung und des Variierens der Tiere. I. J. Psychol. Neurol. (Lpz.) 47, 237–457 (1937)
Author information
Authors and Affiliations
Additional information
On leave of absence from Anatomical Institut, Semmelweis University, Budapest.
Rights and permissions
About this article
Cite this article
Hajdu, F., Hassler, R. & Bak, I.J. Electron microscopic study of the substantia nigra and the strio-nigral projection in the rat. Z.Zellforsch 146, 207–221 (1973). https://doi.org/10.1007/BF00307347
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00307347