![]() Sensenbrenner, M., Devilliers, G., Bock, E. Prochiantz, A., Delacourte, A., Daguet, M.-C. 7C, the diameter of the microdendrite is regular with no narrowing. Other examples of such microdendrites emerging from an unlabelled soma and an unlabelled thin proximal dendrite of two motoneurons are given Fig. Nature 288, 370–373 (1980).ĭenis-Donini, S., Glowinski, J. The diameter of the parent dendrite was 5.2 fim while the diameter of the daughter microdendrite was 1.04. ![]() Prochiantz, A., di Porzio, U., Kato, A., Berger, B. These results demonstrate that glial cells from two different brain regions have distinct properties which could be used to define neuronal polarity observed in vivo.īray, D. ![]() On mesencephalic glial cells the majority of DA neurones develop a great number of highly branched and varicose neuntes, whereas on striatal glia they only exhibit one long, thin and rather linear neurite. much coarser varicose dendrites bearing many more spines and appendages than. Dopaminergic neurones from the mesencephalon were plated on glial monolayers prepared either from the striatal or the mesencephalic region of the embryonic brain. examples to illustrate their diverse cell body shapes and dendritic arbor. Using a similar approach in which the morphology of individual DA cells can be studied after 3H-DA uptake and autoradiography, we now report on in vitro neurone-glia interactions and show that glial cells exert a morphogenetic effect on DA neurones. We have previously shown that striatal target neurones influence the biochemical maturation of ascending mesencephalic dopamine (DA) cells in culture 6,7, as well as the elongation rate of DA neuntes 8. The lack of a gold standard for quantify- ing the. The outline of the primary and most of the secondary dendrites is relatively regular, but occasionally a dendrite is found which has an irregular, varicose outline as the secondary dendrites have often been observed in Golgi material to be varicose near their end, the varicose dendrite segments seen with the electron microscope have been. GABA 3 was radially fusiform (20 m × 8 m) with varicose dendrites, a sparse distribution of synaptic terminals, and a. The shape of a neurone-the projection and branching pattern of axons and dendrites-appears to be determined by a combination of intrinisic and environmental influences 1–5. Histopathological changes in venous grafts and in varicose and non-varicose veins.
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