1999
DOI: 10.1590/s0100-879x1999000300013
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Abstract: Invertebrate glial cells show a variety of morphologies depending on species and location. They have been classified according to relatively general morphological or functional criteria and also to their location. The present study was carried out to characterize the organization of glial cells and their processes in the zona fasciculata and in the protocerebral tract of the crab Ucides cordatus. We performed routine and cytochemical procedures for electron microscopy analysis. Semithin sections were observed … Show more

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Cited by 14 publications
(8 citation statements)
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“…They supply neurons with energy by donating glycogen and other energy substrates for Na + /K + -ATPases, maintain the concentration of Ca 2+ ions and pH in the extracellular medium, regulate synapse formation and nerve pulse conduction, and protect neurons from oxidative stress [5]. GP metabolism is closely related to metabolism of The appearance of glial wrappings observed by us is comparable with the results of studies on crab axon [8,9] lacking myelin sheaths. However, periaxonal sheaths in crab axons appear due to wrapping with GP containing glycogen.…”
Section: Resultssupporting
confidence: 85%
“…They supply neurons with energy by donating glycogen and other energy substrates for Na + /K + -ATPases, maintain the concentration of Ca 2+ ions and pH in the extracellular medium, regulate synapse formation and nerve pulse conduction, and protect neurons from oxidative stress [5]. GP metabolism is closely related to metabolism of The appearance of glial wrappings observed by us is comparable with the results of studies on crab axon [8,9] lacking myelin sheaths. However, periaxonal sheaths in crab axons appear due to wrapping with GP containing glycogen.…”
Section: Resultssupporting
confidence: 85%
“…In addition, in M. oblongus it was possible to distinguish the different morphology and location of positive glial cells in the cortical and neuropilar areas of the ganglia. These characteristics were also observed in different invertebrates and allow the classification of the glial cells according to the their location in the CNS and their morphological features (Radojcic and Pentreath 1979; Allodi and Taffarel 1999).…”
Section: Discussionmentioning
confidence: 85%
“…L and D cells were arranged as networks with gap junctions at cell‐to‐cell contacts, a characteristic analogous to meningeal cell networks (Spray et al,1991; Mercier and Hatton,2001). Such connectivity of nonneuronal satellite cells (many classified as “glial” cells) has been reported and extensively investigated in the nervous systems of other arthropods as well (reviewed by Lane,1981; see also Allodi and Taffarel,1999). L and D cells in copepods were associated with macrophages (phagocytes) both at the surface and within the nervous structures, a characteristic also observed in vertebrates (McMenamin,1999; McMenamin et al,2003; Mercier et al,2002,2003,2006; Mercier and Hatton,2004).…”
Section: Discussionmentioning
confidence: 96%
“…Inside the sheath, Cuadras and Marti‐Subirana (1987) reported perineurial cells to be large ramified cells with long, often thin processes, which separated sheath from nervous tissue. Both electron‐lucent (“subperineurial”; “periaxonal”) and electron‐dense (“perineurial”) nonneuronal cells occur in arthropod nervous systems, including those of crustaceans (Abbott,1971a,b; Cuadras and Marti‐Subirana,1987; Edwards and Tolbert,1998; Allodi and Taffarel,1999; Allodi et al,1999; Hartenstein,2011), the latter more peripherally located than the former. Not all authors apply the term “fibroblast” to such arthropod cells despite similarities in morphological features (Lane,1981; Cuadras and Marti‐Subirana1987).…”
Section: Discussionmentioning
confidence: 99%