The Satellite Cells of the Sensory Ganglia

Pannese, Ennio

doi:10.1007/978-3-642-67750-2

Cited by 128 publications

(192 citation statements)

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“…We observed that the CCK-IR satellite cells were numerous around the largest glial cells (SP-and CCK-immunonegative). Our findings are consistent with previous ultrastructural analysis that demonstrated that the satellite cells were bigger, more numerous and constituted a multilamellate cell sheath especially around large ganglion neurons (Pannese, 1981;Ledda et al, 2004). The glial envelope represents a barrier that partially controls the neuronal environment of the DRG, by regulating the uptake of glutamate and gamma-aminobutyric acid (GABA), and possibly also Kþ ions (Hanani, 2005).…”

Section: Discussionsupporting

confidence: 91%

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Immunohistochemical Localization of Substance P And Cholecystokinin in the Dorsal Root Ganglia and Spinal Cord of the Bottlenose Dolphin (Tursiops truncatus)

Bombardi

Grandis

Nenzi

et al. 2010

The Anatomical Record

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The presence of substance P (SP) and cholecystokinin (CCK) immunoreactive neurons was examined in the bottlenose dolphin dorsal root ganglia (DRGs) and spinal cord by immunohistochemical techniques. SPpositive and CCK-immunoreactive neurons were respectively $50% and 1% of the total number of ganglion cells examined and especially belonged to small and medium-sized cell populations. Using double labeling techniques we observed that SP-and CCK-immunoreactivity coexisted in a very low number of primary afferent neurons (2.7%). Few SPimmunoreactive (IR) neurons (2.7%) were also CCK-positive. On the contrary, 65% of CCK-immunoreactive neurons contained SP. Interestingly, we observed CCK-immunoreactive satellite glial cells located around large cell class somata. Virtually no SP-IR and CCK-positive neurons were surrounded by peripheral CCK-immunoreactive satellite glial cells. The SP-IR and CCK-positive nerve fibers were particularly conspicuous in the superficial layers of the spinal cord. The present study indicates that SP and CCK only partially overlap in the thoracic, lumbar, and caudal DRGs of the bottlenose dolphin, suggesting that the majority of SP-IR ganglion neurons are lacking in CCK-immunoreactivity. The role of SPcontaining DRG neurons is discussed also in relation to the huge vascular spinal retia mirabilia typical of cetaceans. Anat Rec, 293:477-484, 2010. V V C 2010 Wiley-Liss, Inc.

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Section: Discussionsupporting

confidence: 91%

“…Each neuronal cell body is encircled by a thin envelope consisting of laminar glial cells, called satellite cells. These latter elements are coupled to each other via gap junctions which allow a coordinated activity among the cells (Pannese, 1981;Procacci et al, 2008). Interestingly, each satellite cell is associated to a single neuron only.…”

Section: Discussionmentioning

confidence: 99%

Immunohistochemical Localization of Substance P And Cholecystokinin in the Dorsal Root Ganglia and Spinal Cord of the Bottlenose Dolphin (Tursiops truncatus)

Bombardi

Grandis

Nenzi

et al. 2010

The Anatomical Record

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“…First, Prof. Pannese has pioneered the research on SGCs, and his first article on this topic appeared over 50 years ago (Pannese, 1956). His 1981 monograph on SGCs is a must reading for anyone interested in this field, and is a classic of beauty, precision and clarity (Pannese, 1981). Second, structure is the best way to approach any study in biology because structure gives us important clues on function.…”

Section: Menachem Hananimentioning

confidence: 99%

Satellite glial cells: more than just ‘rings around the neuron’

Hanani

2010

Neuron Glia Biol.

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“…Thus, each nerve cell body with its satellite cell sheath constitutes a discrete unit (for reviews see [19,20]). Some data suggest that satellite cells support the metabolism of the neuron with which they are associated (for more details see [19]). Therefore, in sensory ganglia a nerve cell body and its associated satellite cell sheath constitute not only a structural unit, but probably also a metabolic one.…”

Section: Introductionmentioning

confidence: 99%

Age-related quantitative changes in mitochondria of satellite cell sheaths enveloping spinal ganglion neurons in the rabbit

Martinelli

Sartori

Ledda

et al. 2003

Brain Research Bulletin

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We studied mitochondria in the satellite cell sheaths which envelope the spinal ganglion neurons of rabbits aged 12, 42, and 79 months. While the mean cytoplasmic volume of satellite cell sheaths did not change significantly with age, the mean percentage of cytoplasmic volume occupied by mitochondria decreased with age. This decrease is mainly due to a reduction in the total mitochondrial mass and only in minor part is a consequence of lipofuscin accumulation. Mitochondrial structure did not change, while mitochondrial size increased with age. Comparison between mitochondria in nerve cell bodies and those in satellite cell sheaths showed that: (1) the mean percentage of cytoplasmic volume occupied by mitochondria was greater in nerve cell bodies than satellite cell sheaths and the ratio between these two percentages remained constant with advancing age; (2) the total mitochondrial mass was much greater in nerve cell bodies than satellite cell sheaths and the ratio between these two values increased with age; (3) the extent of increase of mitochondrial size with age was similar in nerve cell bodies and satellite cell sheaths. The results of the present study suggest that: (1) the ability of satellite cell sheaths to produce energy decreases with age; (2) the decreased ability of sensory neurons in old animals to meet high energy demands may be partly due to the diminished contribution of their associated satellite cell sheaths.

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The Satellite Cells of the Sensory Ganglia

Cited by 128 publications

References 0 publications

Immunohistochemical Localization of Substance P And Cholecystokinin in the Dorsal Root Ganglia and Spinal Cord of the Bottlenose Dolphin (Tursiops truncatus)

Immunohistochemical Localization of Substance P And Cholecystokinin in the Dorsal Root Ganglia and Spinal Cord of the Bottlenose Dolphin (Tursiops truncatus)

Satellite glial cells: more than just ‘rings around the neuron’

Age-related quantitative changes in mitochondria of satellite cell sheaths enveloping spinal ganglion neurons in the rabbit

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