Spinal ganglion cytological responses to axon and to dendrite sectioning

1966 ◽  
Vol 65 (1-3) ◽  
pp. 236-255 ◽  
Author(s):  
Julio Maria Sosa ◽  
Nadir Brum de Zorrilla
Keyword(s):  
Spinal Ganglion

On the Use of POCS for Restoring the “Missing Wedge” in Electron Tomography

1990 ◽  
Vol 48 (1) ◽  
pp. 520-521
Author(s):  
Neng-Yu Zhang ◽  
Bruce F. McEwen ◽  
Joachim Frank
Keyword(s):  
Function Space ◽  
Convex Sets ◽  
Electron Tomography ◽  
Spinal Ganglion ◽  
Fourier Space ◽  
Missing Information ◽  
Voltage Electron ◽  
High Voltage Electron Microscope ◽  
Energy Bound ◽  
Spatial Boundedness

Reconstructions of asymmetric objects computed by electron tomography are distorted due to the absence of information, usually in an angular range from 60 to 90°, which produces a “missing wedge” in Fourier space. These distortions often interfere with the interpretation of results and thus limit biological ultrastructural information which can be obtained. We have attempted to use the Method of Projections Onto Convex Sets (POCS) for restoring the missing information. In POCS, use is made of the fact that known constraints such as positivity, spatial boundedness or an upper energy bound define convex sets in function space. Enforcement of such constraints takes place by iterating a sequence of function-space projections, starting from the original reconstruction, onto the convex sets, until a function in the intersection of all sets is found. First applications of this technique in the field of electron microscopy have been promising.To test POCS on experimental data, we have artificially reduced the range of an existing projection set of a selectively stained Golgi apparatus from ±60° to ±50°, and computed the reconstruction from the reduced set (51 projections). The specimen was prepared from a bull frog spinal ganglion as described by Lindsey and Ellisman and imaged in the high-voltage electron microscope.

scholarly journals Spinal ganglion cyst presenting with radiculopathy: diagnostic challenges and differential

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Lohit Velagapudi ◽  
Caio M. Matias ◽  
Christopher Elia ◽  
David Stolzenberg ◽  
Garrett Largoza ◽  
...  
Keyword(s):  
Ganglion Cyst ◽  
Spinal Ganglion

Changes with age in the Golgi apparatus of rabbit spinal ganglion neurons

2001 ◽  
Vol 33 (4) ◽  
pp. 342-348 ◽  
Author(s):  
M. Ledda ◽  
L. Barni ◽  
L. Altieri ◽  
E. Pannese
Keyword(s):  
Golgi Apparatus ◽  
Spinal Ganglion ◽  
Spinal Ganglion Neurons ◽  
Ganglion Neurons

Difference in phosphorylation of neurofilament proteins in motor neurons and spinal ganglion cells

1989 ◽  
Vol 15 (4) ◽  
pp. 467-473 ◽  
Author(s):  
I TOYOSHIMA ◽  
A YAMAMOTO ◽  
O MASAMUNE ◽  
S YAMADA ◽  
M SATAKE
Keyword(s):  
Motor Neurons ◽  
Ganglion Cells ◽  
Spinal Ganglion ◽  
Neurofilament Proteins ◽  
Spinal Ganglion Cells

The role of the spinal ganglion of the sacral nerve on the function of the urinary bladder

1963 ◽  
Vol 25 (3) ◽  
pp. 435-452 ◽  
Author(s):  
S. Shishito ◽  
T. Saito ◽  
K. Imabayashi ◽  
N. Nakano ◽  
Y. Shiraiwa ◽  
...  
Keyword(s):  
Urinary Bladder ◽  
Spinal Ganglion ◽  
Sacral Nerve

scholarly journals Electron Microscopic Observations on Spinal Ganglion Cells of Rana pipiens after Injection of Malononitrile

1958 ◽  
Vol 4 (1) ◽  
pp. 83-86 ◽  
Author(s):  
Everett Anderson ◽  
V. L. van Breemen
Keyword(s):  
Golgi Complex ◽  
Rana Pipiens ◽  
Ganglion Cells ◽  
Morphological Changes ◽  
Membrane System ◽  
Spinal Ganglion ◽  
Electron Microscopic ◽  
Biochemical Alterations ◽  
Spinal Ganglion Cells ◽  
Electron Microscopes

Spinal ganglionic cells of Rana pipiens were studied with light and electron microscopes in normal animals and in animals which had received graded dosages of malononitrile intraperitoneally. After treatment no increase in the intensity of staining was noted in the Nissl substance when spinal ganglion cells were examined with the light microscope. The electron micrographs demonstrated the following in malononitrile-treated animals: 1. The cisternae of the endoplasmic reticulum composing the Nissl bodies appeared to fragment and lose their parallel orientation. 2. The microvesicular components of the Golgi complex appeared to increase in number, and the increase was apparently due to fragmentation of the membrane system of the Golgi complex. 3. The mitochondria enlarged and became pleomorphic, but displayed no alterations of internal structure. The morphological changes may be interpreted as reflections of biochemical alterations.

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