Development of the glycogen body of the Japanese quail, <i>Coturnix japonica</i>: II. Observations of electron microscopy

Gennaro, Louis D. De; Benzo, Camillo A.

doi:10.1002/jmor.1052070210

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…In the context of RP development, it is worth mentioning the formation of the glycogen body, an RP-derived structure unique to Aves that is confined to the lumbar level of the neuraxis 42 – 44 . There is no axonal crossing at the dorsal midline that occurs at the level of the glycogen body, whereas at axial levels, rostral and caudal to it, decussation is apparent.…”

Section: Sequential Maturation Of the Roof Plate Into Radial Glia And...mentioning

confidence: 99%

Recent advances in understanding cell type transitions during dorsal neural tube development

Kalcheim¹,

Rekler²

2022

Fac Rev

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The vertebrate neural tube is a representative example of a morphogen-patterned tissue that generates different cell types with spatial and temporal precision. More specifically, the development of the dorsal region of the neural tube is of particular interest because of its highly dynamic behavior. First, early premigratory neural crest progenitors undergo an epithelial-to-mesenchymal transition, exit the neural primordium, and generate, among many derivatives, most of the peripheral nervous system. Subsequently, the dorsal neural tube becomes populated by definitive roof plate cells that constitute an organizing center for dorsal interneurons and guide axonal patterning. In turn, roof plate cells transform into dorsal radial glia that contributes to and shapes the formation of the dorsal ependyma of the central nervous system. To form a normal functional spinal cord, these extraordinary transitions should be tightly regulated in time and space. Thus far, the underlying cellular changes and molecular mechanisms are only beginning to be uncovered. In this review, we discuss recent results that shed light on the end of neural crest production and delamination, the early formation of the definitive roof plate, and its further maturation into radial glia. The last of these processes culminate in the formation of the dorsal ependyma, a component of the stem cell niche of the central nervous system. We highlight how similar mechanisms operate throughout these transitions, which may serve to reveal common design principles applicable to the ontogeny of epithelial tissues.

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Section: Sequential Maturation Of the Roof Plate Into Radial Glia And...mentioning

confidence: 99%

Recent advances in understanding cell type transitions during dorsal neural tube development

Kalcheim¹,

Rekler²

2022

Fac Rev

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“…The glycogen content of GB is not altered by effects of a variety of hormones [14,24] or by starvation [6,11]. Furthermore, GB shows normal development with high glycogen content under some experimental conditions, such as grafting to chorioallantoic membrane or tail bud removal [6,8].…”

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confidence: 99%

Interaction between Glycogen Body Cell and Neuron: Examination in Co-culture System

Imagawa

Shogaki

Uehara

2006

The Journal of Veterinary Medical Science

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ABSTRACT. The glycogen body (GB) is in the dorsal area of the lumbosacral spinal cord in birds and is composed of uniform cells characterized by high glycogen storage. The glycogen of GB cells remains unchanged in vivo by the effects of a variety of hormones such as insulin, glucagon, adrenocorticotropic hormone and by physiological conditions such as starvation. In order to investigate the latent functionability of GB cells, we observed morphological changes of glycogen body cells in a co-culture system with cerebellar neurons by light and transmission electron microscopy. Cultured GB cells were labeled with 1,1'-dioctadecyl-3,3,3',3'-tetramethylindocarbocyanine perchlorate (DiI). The cultured neurons derived from cerebellum were co-cultured with the labeled GB cells. Under the co-culture with neurons, 2 types of GB cells were detected. One was conventional with numerous glycogen deposits in the cytoplasm and tended to make clusters. The other type of GB cells singly extended the processes attaching to the neuronal body and axons. In the axons in contact with GB cell processes, small vesicles appearing as synaptic vesicles were observed. These observations suggested that some GB cells can differentiate to an average astrocyte. The GB cells were assumed to involve the synapse formation or maturing as astrocytes in the CNS.

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From neural tube to spinal cord: The dynamic journey of the dorsal neuroepithelium

Ventriglia,

Kalcheim

2024

Developmental Biology

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Development of the glycogen body of the Japanese quail, Coturnix japonica: II. Observations of electron microscopy

Cited by 4 publications

References 13 publications

Recent advances in understanding cell type transitions during dorsal neural tube development

Recent advances in understanding cell type transitions during dorsal neural tube development

Interaction between Glycogen Body Cell and Neuron: Examination in Co-culture System

From neural tube to spinal cord: The dynamic journey of the dorsal neuroepithelium

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