Advertisement

Springer Nature is making Coronavirus research free. View research | View latest news | Sign up for updates

Ultrastructural observations on synaptic ribbons in the pineal organ of the goldfish

  • 15 Accesses

  • 8 Citations

Summary

Synaptic ribbons in the pineal organ of the goldfish were examined electron microscopically with particular attention to their topography. These structures were formed of parallel membranes, which were poorly preserved with OsO4 fixation and could be extracted from thin sections with pronase indicating their proteinaceous nature. Synaptic ribbons were closely apposed to the plasma membrane bordering dendrites of ganglion cells, but were also related to processes of both photoreceptor and supportive cells. Their close proximity to invaginations of the plasma membrane and portions of the endoplasmic reticulum suggest that they are involved in the turnover of cytoplasmic membranes. Tubular and spherical organelles of unknown function are also described.

This is a preview of subscription content, log in to check access.

References

  1. Bunt AH (1971) Enzymatic digestion of synaptic ribbons in amphibian retinal photoreceptors. Brain Res 25:571–577

  2. Collin JP (1971) Differentiation and regression of the cells of the sensory cell line in the epiphysis cerebri. In: Wolstenholme GEW, Knight J (eds) The Pineal Gland, Symp. of the Ciba Foundation. Churchill Livingstone, London, pp 79–125

  3. Falcon J (1979) L'organe pinéal du Brochet (Esox lucius, L.) II. Etude en microscopie électronique de la differenciation et de la rudimentation partielle des photorécepteurs: conséquences possibles sur l'élaboration des messages photosensoriels. Ann Biol Anim Biophys 19:661–688

  4. King TS, Dougherty WJ (1979) Relationship of “synaptic” ribbons to rough endoplasmic reticulum and microtubules in the rat pinealocyte. I: Bailey GW (ed) Proc. 37th Ann Meeting of Electron Microscopy Society of America, ed. Claitor's Publ Div Baton Rouge, pp 70–71

  5. Krstić R (1976) Ultracytochemistry of the synaptic ribbons in the rat pineal organ. Cell Tissue Res 166:135–143

  6. McNulty JA (1978) The pineal of the troglophilic fish, chologaster agassizi: An ultrastructural study. J Neural Transm 43:47–71

  7. Ohba S, Wake K, Ueck M (1979) Histochemical and electron microscopical findings in the pineal organ of Carassius gibelio (Landsd.). Progr Brain Res 52:93–96

  8. Oksche A (1971) Sensory and glandular elements of the pineal organ. In: Wolstenholme GEW, Knight J (eds) The Pineal Gland Symp. of the Ciba Foundation. Churchill Livingstone, London, pp 127–146

  9. Osborne MP, Thornhill RA (1972) The effect of monoamine depleting drugs upon synaptic bars in the inner ear of the bullfrog (Rana catesbiana). Z Zellforsch 127:347–355

  10. Pévet P (1979) Secretory processes in the mammalian pinealocyte under natural and experimental conditions. Progr Brain Res 52:149–194

  11. Roth A, Tscharntke H (1976) Ultrastructure of ampullary electroreceptors in lungfish and brachiopterygii. Cell Tissue Res 173:95–108

  12. Spadaro A, de Simone I, Puzzolo D (1978) Ultrastructural data and chronobiological patterns of the synaptic ribbons in the outer plexiform layer of the retina of albino rats. Acta Anat 102:365–373

  13. Szamier RB (1974) Enzymatic digestion of presynaptic structures in electroreceptors of elasmobranchs. Am J Anat 139:567–574

  14. Takahashi H (1969) Light and electron microscopic studies on the pineal organ of the goldfish, Carassius auratus L. Bull Fac Fish. Hokkaido Univ 20:143–157

  15. Vollrath L (1973) Synaptic ribbons of the mammalian pineal gland: circadian changes. Z Zellforsch 145:171–183

  16. Wake K (1973) Acetylcholinesterase-containing nerve cells and their distribution in the pineal organ of the goldfish, Carassius auratus. Z Zellforsch 145:287–298

Download references

Author information

Correspondence to Dr. John A. McNulty.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

McNulty, J.A. Ultrastructural observations on synaptic ribbons in the pineal organ of the goldfish. Cell Tissue Res. 210, 249–256 (1980). https://doi.org/10.1007/BF00237613

Download citation

Key words

  • Synaptic ribbons
  • Pineal organ
  • Goldfish
  • Ultrastructure