Some observations on the fine structure of the synaptic area in the ciliary ganglion of the chick

Takahashi, K; Hama, Kiyoshi

doi:10.1007/bf00344467

Cited by 64 publications

(22 citation statements)

References 27 publications

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“…This value is somewhat but agrees with that obtained by TAKAHASHI and HAMA (1965a) in the "synaptic complex" present in calyciform synapses of the chicken ciliary ganglion. As observed by several authors in the autonomic ganglia (ELFVIN, 1963b;TAKAHASHI and HAMA, 1965a;UNSICKER, 1967;BECKER, 1968), the synaptic cleft found in chicken intrapancreatic ganglia is filled with a finely granular dense material. In this study simple interneuronal contacts without the formation of "active zones" have not been considered as synaptic junctions.…”

Section: Discussionsupporting

confidence: 81%

“…In chicken intrapancreatic ganglia axo-somatic synapses have not been demonstrated clearly, but their existence should not be utterly denied since the observations in the present study have not been carried out in completely serial sections covering (DE LORENZO,1960;ELFVIN, 1963b;YAMAMOTO, 1963;FORSSMANN, 1964;TAKAHASHI and HAMA, 1965a;DE LEMOS and PICK, 1966;UNSICKER, 1967;WECHSLER and SCHMEKEL, 1967;BECKER, 1968;YOSHIDA, 1968;COLBORN and ADAMO, 1969). Specializations of synaptic membranes have also been confirmed in axo-dendritic synapses of the chicken intrapancreatic ganglion.…”

Section: Discussionmentioning

confidence: 67%

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Fine Structure of Autonomic Ganglion in the Chicken Pancreas

Kudo

1971

Arch. Histol. Jap., Arch. Histol. Jpn

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Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 67%

Fine Structure of Autonomic Ganglion in the Chicken Pancreas

Kudo

1971

Arch. Histol. Jap., Arch. Histol. Jpn

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“…Such close membrane apposition has been described in the synapses of the chick ciliary ganglion by Takahashi & Hama (1965), de Lorenzo (1966, and Koenig (1967). However, Takahashi & Hama (1965) and Koenig (1967) have both commented on the rarity of occurrence of these close membrane appositions. In addition, Haimory & Dyachkova (1964), and Hess (1965) failed to find 'tight junctions' in the chick.…”

Section: Discussionsupporting

confidence: 52%

“…In addition, Haimory & Dyachkova (1964), and Hess (1965) failed to find 'tight junctions' in the chick. Electrical coupling occurs in all chicks at the time of hatching a, b) but Takahashi & Hama (1965) have reported that close apposition of synaptic membranes does not occur in newly hatched chicks. Therefore, it seems that the appearance of electrical coupling is better correlated with the presence of myelin lamellae than with the occurrence of 'tight junctions'.…”

Section: Discussionmentioning

confidence: 99%

Correlation between transmission and structure in avian ciliary ganglion synapses

Hess¹,

Pilar²,

Weakly³

1969

The Journal of Physiology

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SUMMARY1. Extracellular responses from post-ganglionic axons of pigeon and chick isolated ciliary ganglia were elicited by stimulation of the presynaptic nerve. Intracellular recordings were also obtained from newly hatched pigeon and chick ganglion cells. The fine structure of ganglia from pigeons of various ages was examined with the electron microscope.2. In ganglia from chick embryos and pigeons up to 10 days old, the extracellular response was unimodal with a long latency and could be blocked by the addition of D-tubocurarine (D-TC) or hexamethonium to the bathing solution. A bimodal extracellular response appeared in pigeons about 10 days after hatching. Only the second peak of the response could be blocked by D-TC or hexamethonium. The response recorded from 22 to 26-day-old pigeons was similar to that seen in the adult.3. The intracellular recordings from ganglion cells of 2-week-old pigeons exhibit two post-synaptic potentials elicited by presynaptic stimulation. The first post-synaptic potential appears to be due to current flow through the ganglion cell during the presynaptic action potential. The second is chemically mediated. In pigeons from 1 to 6 days old, ohly the second post-synaptic potential is observed.4. The presynaptic terminals in the 4-day-old birds were in the form of calyces. In pigeons 7 days old or older, boutons appeared. The boutons were presumably formed as a result of cleavage of calyciform nerve terminals. Myelin was seen first in the 7-day-old pigeon, was well developed in the 16-day-old bird, and persisted in the adults.5. In adult ganglia, the first component of the extracellular response decreased and was finally abolished after 10-12 hr of superfusion with

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“…The pharmacological study of SUDEN et al (1951) LORENZO, 1960;TAKAHASHI and HAMA, 1965;HESS, 1965;SZENTAGOTHAI, 1964) cannot be observed in this preparation. At the synapse somatic or dendritic spines often emerged from the postsynaptic side.…”

Section: Cmentioning

confidence: 85%

The Fine Structure of the Ciliary Ganglion of the Guinea Pig

Watanabe

1972

Arch. Histol. Jap., Arch. Histol. Jpn

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Some observations on the fine structure of the synaptic area in the ciliary ganglion of the chick

Cited by 64 publications

References 27 publications

Fine Structure of Autonomic Ganglion in the Chicken Pancreas

Fine Structure of Autonomic Ganglion in the Chicken Pancreas

Correlation between transmission and structure in avian ciliary ganglion synapses

The Fine Structure of the Ciliary Ganglion of the Guinea Pig

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