Results 161 to 170 of about 2,934 (238)

Pinealocyte synaptic ribbons and neuroendocrine function

Microscopy Research and Technique, 1992
AbstractA comparative study of pinealocyte synaptic ribbons (SR) revealed two predominant populations exhibiting either a rod/ribbon shape (SRr) or a spherical/punctate shape (SRsp). Species‐specific differences were found in the abundance of SR, the ratio of SRr/SRsp, and the occurrence of SR in ribbon fields.
J A, McNulty, L M, Fox
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SYNAPTIC RIBBON IN THE HUMAN PINEALOCYTE

Acta Pathologica Japonica, 1976
An electron microscopic study of a pineal gland which had been obtained from, a 3‐year‐old girl at autopsy revealed the presence of synaptic ribbon in it. Namely, in some parenchymal cells observed, synaptic ribbons, each of which was ca. 700 nm in length and with synaptic vesicles of up to 60 nm in diameter gathering on the surface, were found in the ...
K, Kurumado, W, Mori
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The Pinealocyte – A Paraneuron

Progress in Brain Research, 1979
Publisher Summary This chapter describes the pinealocyte as a paraneuron and proves the usefulness of the paraneuron concept for answering questions in pineal research. Main representatives of the paraneuron family are, for example, (a) peptidergic hormoneproducing endocrine cells like the chromaffin cells of the adrenal medulla, parafollicular cells.
M, Ueck, K, Wake
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Comparisons of Sizes of Pinealocyte Nuclei and Pinealocytes in Young and Adult Chinese Hamsters (Cricetulus griseus) Under Different Photoperiod Conditions

Journal of Pineal Research, 1989
Semiquantitative electron microscopic observations on pinealocytes of the Chinese hamster (Cricetulus griseus) were made to compare the sizes of pinealocyte nuclei and pinealocytes as a whole, their nuclei and cytoplasm together, over a 24‐hr period, between young animals (60‐70 days old) and adult animals (120–130 days old) under LD 12: 12 and between
Y, Hira, Y, Sakai, S, Matsushima
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3-Dimensional Ultrastructural Analysis of the Rat Pinealocyte: Presence of Secretory Bulbous Projections Delineated from the Cell Body by Junctional Complexes

Neuroendocrinology, 2023
Introduction: The superficial pineal gland of the Sprague Dawley rat is a neuroendocrine structure secreting the hormone melatonin. By use of block face scanning electron microscopy, our aim here was to identify the 3-dimensional ultrastructure of the ...
Morten Møller, Jens Midtgaard, Klaus Qvortrup, M. F. Rath   +3 more
semanticscholar   +1 more source

The role of homeobox gene‐encoded transcription factors in regulation of phototransduction: Implementing the primary pinealocyte culture as a photoreceptor model

Journal of Pineal Research, 2021
Homeobox genes encode transcription factors controlling development; however, a number of homeobox genes are expressed postnatally specifically in melatonin‐producing pinealocytes of the pineal gland and photoreceptors of the retina along with ...
Henrik Hertz, A. S. Blancas‐Velazquez, M. F. Rath   +2 more
semanticscholar   +1 more source

Paired Twisted Filaments in Human Pinealocytes

Acta Pathologica Japonica, 1991
Paired twisted filaments (PTF) have been confirmed and described ultra‐structurally in the normal human pineal gland for the first time. The PTF showed a peculiar double helical structure, measuring 12 to 25 nm in maximal helix width with a half‐periodicity of 30 to 35 nm (periodicity of the constrictions). Each filament was about 10 nm wide.
A, Hasegawa, H, Shimada, N, Izumiyama, K, Ohtsubo   +3 more
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