Summary
Maturation of hamster cochlea was studied using light and electron microscopy.
Critical stages of receptor and neural structure development have been determined. At birth the hamster cochlea shows a pronounced immaturity, but innervation can already be found. 2 or 3 days later, characteristic afferent synapses can be recognized beginning at the inner hair cell level. Similarly, efferent endings first appear on the inner side at the end of the first week.
The onset of auditory function must be related to structures depicted at around 10 days, and cochlear maturation is achieved at about 25 days.
The sequence of synaptic development in the cochlea is discussed regarding the general morphogenesis of synapses within the nervous system. Some determinations of the timing of peripheral myelination are given. This process begins almost a week before the presumable date of the onset of function.
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References
Adinolfi, A. M.: Morphogenesis of synaptic junctions in layers I and II of the somatic sensory cortex. Exp. Neurol. 34, 372–382 (1972)
Änggård, L.: An electrophysiological study of the development of cochlear functions in the rabbit. Acta oto-laryng. Suppl. 203, 1–64 (1965)
Boyer, C. L.: Chronology of development for the golden hamster. J. Morph. 92, 1–38 (1953)
Bunge, M. B., Bunge, R. P., Peterson, E. R.: The onset of synapse formation in spinal cord cultures as studied by electron microscopy. Brain Res. 6, 728–749 (1967)
Carlier, E., Abonnenc, M., Pujol, R.: Maturation des réponses unitaires à la stimulation tonale dans le nerf cochléaire du chaton. J. Physiol. (Paris) 70, 129–138 (1975)
Carlier, E., Pujol, R.: Early effect of efferent stimulation in the kitten cochlea. Neuroscience Letters 3, 1–8 (1976)
Glees, P., Sheppard, G. L.: Electron microscopical studies of the synapse in the developing chick spinal cord. Z. Zellforsch. 62, 356–362 (1964)
Gruner, J. E.: The maturation of human cerebral cortex in electron microscopy study of post-mortem punctures in premature infants. Biol. Neonate 16, 243–255 (1970)
Flock, A., Jørgensen, M., Russell, I.: The physiology of individual hair cells and their synapses. In: Basic mechanisms in hearing (A. Møller, ed.), pp. 273–306. New York: Academic Press (1973)
Heywood, P., Pujol, R., Hilding, D.: Early synapse formation in vestibular system of fetal guinea pig. Brain Res. 51, 337–339 (1973)
Hilding, D. A.: Electron microscopy of the developing hearing organ. Laryngoscope 79, 1691–1704 (1969)
Iurato, S.: Efferent fibers to the sensory cells of Corti's organ. Exp. Cell. Res. 27, 162–164 (1962)
Jones, D. G., Revell, E.: The postnatal development of the synapse: a morphological approach utilizing synaptosomes. Z. Zellforsch. 111, 179–194 (1970)
Kikuchi, K., Hilding, D. A.: The development of the organ of Corti in the mouse. Acta oto-laryng. 60, 207–222 (1965)
Knowlton, V.: Correlation of the development of membranous and bony labyrinths, acoustic ganglia, nerves, and brain centers of chick embryo. J. Morphol. 121, 179–208 (1967)
Lasansky, A., de Robertis, E.: Submicroscopic analysis of the genetic distrophy of visual cells in C3H mice. J. Biophys. Biochem. Cytol. 7, 679 (1960)
Mikaelian, D., Ruben, R. S.: Development of hearing in the normal CBA-J mouse. Acta oto-laryng. 59, 451–461 (1964)
Nakai, Y., Hilding, D. A.: Cochlear development. Acta oto-laryng. 66, 369–385 (1968)
Olney, J. W.: An electron microscopic study of synapse formation, receptor outer segment development, and other aspects of developing mouse retina. Invest. Ophtal. 7, 250–268 (1968)
Orr, M. F.: Histogenesis of sensory epithelium in reaggregates of dissociated embryonic chick otocysts. Develop. Biol. 17, 39–54 (1968)
Privat, A., Drian, M. J., Mandon, P.: Synaptogenesis in the outgrowth of rat cerebellum in organized culture. J. Comp. Neur. 153, 291–308 (1974)
Pujol, R.: Development of tone burst responses along the auditory pathway in the cat. Acta oto-laryng. 74, 383–391 (1972)
Pujol, R., Hilding, D. A.: Anatomy and physiology of the onset of auditory function. Acta oto-laryng. 76, 1–10 (1973)
Pujol, R., Marty, R.: Structural and physiological relatioships of the maturing auditory system. In: Ontogenesis of the Brain (Jilek and Trojan, eds.), pp. 337–385. Charles University, Praha 1968
Pujol, R., Marty, R.: Postnatal maturation in the cochlea of the cat. J. Comp. Neur. 139, 115–126 (1970)
Romand, R., Pujol, R., König, N., Marty, R.: Maturation électrophysiologique de la cochlée. C.R. Acad. Sci. (Paris) 270, 2476–2479 (1970)
Sher, A. E.: The embryonic and postnatal development of the inner ear of the mouse. Acta oto-laryng., Suppl. 285, 1–77 (1971)
Spoendlin, H.: Innervation patterns in the organ of Corti of the cat. Acta oto-laryng. 67, 239–254 (1969)
Spoendlin, H.: Personal communication 1975
Stephens, C. B.: Development of the middle and inner ear in the golden hamster. Acta oto-laryng., Suppl. 296, 1–51 (1972)
Van de Water, T. R., Heywood, P., Ruben, R. J.: Development of sensory structures in organ cultures of the twelfth and thirteenth gestation day mouse embryo inner ears. Ann. otol., Suppl. 4, 1–18 (1973)
Van de Water, T. R., Ruben, R. J.: Quantification of the “in vitro” development of the mouse embryo inner ear. Ann. otol., Suppl. 4, 19–21 (1973)
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Supported by grants from INSERM (ATP 6-74-27), CNRS (ATP 1422) and DGRST (AC-BRD No. 75-7-1332)
The collaboration of Mrs. C. Devigne is gratefully acknowledged, as well as the technical assistance of M. L. Agate and Mrs. M. R. Ibrahim. Electron microscopic observations have been done using equipment of the Unité de Recherches Neurobiologiques (INSERM, Marseille): the authors are indebted to Professor P. Dell and Dr. P. Angaut.
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Pujol, R., Abonnenc, M. Receptor maturation and synaptogenesis in the golden hamster cochlea. Arch Otorhinolaryngol 217, 1–12 (1977). https://doi.org/10.1007/BF00453886
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DOI: https://doi.org/10.1007/BF00453886