A. G. Pillay
Division of Anatomy,
Faculty of Medicine and Health
Sciences, University Pufra
Malaysia, 43400 UPM,
Serdang, Selangor, Malaysia
ABSTRACT
Chick embryos at different stages of development till hatching, as well as the adult tissues were fixed in formol-saline. Serial sections of 8-10 microns thickness were stained by cresyl fast violet to analyse the results in the proximal ganglionic complex of the cranial nerves IX and X. The dark cells are considered as active and the light cells are considered as inactive, resting, dying or degenerating ones. Cell death is most prominent and common among the small and medium sized ones; possibly it is during these stages of cellular growth, peripheral and central processes (of axons) begin to grow from the cell body and get established in their projection fields. The tiny cells are always dark; the very-small cells are also usually dark during the embryonic development till E18. The light cells have appeared among this group of cells just on the day of hatching. When cells fail to establish functional connections and are no more needed, they tend to become inactive, begin to die and disappear from the ganglion. It is assumed that the time of appearance of the light cells might be related to the onset of establishment of functional connections of neurons and to the functional importance of the organs that it supplies
PDF References Citation
How to cite this article
A. G. Pillay, 2001. Dual Cytology, Cellular Death and Their Significance in the Proximal Ganglionic Complex:
An Investigation Through the Ontogeny of the Chick Gallus Gallus Domesticus. Journal of Medical Sciences, 1: 16-21.
DOI: 10.3923/jms.2001.16.21
URL: https://scialert.net/abstract/?doi=jms.2001.16.21
DOI: 10.3923/jms.2001.16.21
URL: https://scialert.net/abstract/?doi=jms.2001.16.21
REFERENCES
- Cammermeyer, J., 1962. An evaluation of the significance of the dark neuron. Ergeb. Anat. Entwicklungsgesch., 36: 1-61.
PubMedDirect Link - Carmel, P.W. and B.M. Stein, 1969. Cell changes in sensory ganglia following proximal and disal nerve section in the monkey. J. Comp. Neurol., 135: 145-165.
CrossRefDirect Link - Clarke, P.G.H., 1982. Labelling of dying neurones by peroxidase injected intravascularly in chick embryos. Neurosci. Lett., 30: 223-228.
CrossRefDirect Link - Cowan, W.M. and E. Wenger, 1967. Cell loss in the trochlear nucleus of the chick during normal development and after radical extirpation of the optic vesicle. Exp. Zool., 164: 267-279.
CrossRefDirect Link - D'amico-Martel, A., 1982. Temporal patterns of neurogenesis in avian cranial sensory and autonomic ganglia. Am. J. Anat., 163: 351-372.
CrossRefDirect Link - Hamburger, V., 1961. Experimental analysis of the dual origin of the trigeminal ganglion in the chick embryo. J. Exp. Zool., 148: 91-123.
CrossRefDirect Link - Hamburger, V., 1975. Cell death in the development of the lateral motor column of the chick embryo. J. Comp. Neurol., 160: 535-546.
CrossRefPubMedDirect Link - Pillay, A.G., 2000. Vestibular ganglion as a model system of vital-neural centre during embryonic development. Pak. J. Biol. Sci., 3: 52-56.
CrossRefDirect Link - Ptacek, J.M. and L. Fagan-Duban, 1974. Developmental changes in neuron size and density in the visual cortex and superior colliculus of the postnatal golden hamster. J. Comp. Neurol., 158: 237-242.
CrossRefDirect Link - Spassova, I., 1982. Cat trigeminal ganglion. Neuron types. An experimental study. Z. Mikrosk. Anat. Forsch., 96: 235-244.
PubMedDirect Link - Yip, H.K. and E.M.Jr. Johnston, 1984. Developing dorsal root ganglion neurons require trophic support from their central processes: Evidence for a role of retrogradely transported nerve growth factor from the central nervous system to the periphery. Proc. Natl. Acad. Sci. USA., 81: 6245-6249.
PubMedDirect Link