Photodynamic damage of glial cells in crayfish ventral nerve cord

2010 ◽  
Author(s):  
M. S. Kolosov ◽  
E. Duz ◽  
A. B. Uzdensky
Keyword(s):  
Glial Cells ◽  
Nerve Cord ◽  
Ventral Nerve Cord

Extracellular filaments in the perineurium of the florida lobster, Panulirus argus

1987 ◽  
Vol 45 ◽  
pp. 784-785
Author(s):  
Roy J. Baerwald ◽  
Lura C. Williamson
Keyword(s):  
Blood Brain Barrier ◽  
Glial Cells ◽  
Tannic Acid ◽  
Nerve Cord ◽  
Ventral Nerve Cord ◽  
Florida Keys ◽  
Panulirus Argus ◽  
Brain Barrier ◽  
Cacodylate Buffer ◽  
Nerve Cords

In arthropods the perineurium surrounds the neuropile, consists of modified glial cells, and is the morphological basis for the blood-brain barrier. The perineurium is surrounded by an acellular neural lamella, sometimes containing scattered collagen-like fibrils. This perineurial-neural lamellar complex is thought to occur ubiquitously throughout the arthropods. This report describes a SEM and TEM study of the sheath surrounding the ventral nerve cord of Panulirus argus.Juvenile P. argus were collected from the Florida Keys and maintained in marine aquaria. Nerve cords were fixed for TEM in Karnovsky's fixative and saturated tannic acid in 0.1 M Na-cacodylate buffer, pH = 7.4; post-fixed in 1.0% OsO4 in the same buffer; dehydrated through a graded series of ethanols; embedded in Epon-Araldite; and examined in a Philips 200 TEM. Nerve cords were fixed for SEM in a similar manner except that tannic acid was not used.

Glial cells in the earthworm ventral nerve cord make an A-type nexus

1977 ◽  
Vol 149 (4) ◽  
pp. 605-611 ◽  
Author(s):  
Robert W. Kensler ◽  
Peter Brink ◽  
Maynard M. Dewey
Keyword(s):  
Glial Cells ◽  
Nerve Cord ◽  
Ventral Nerve Cord

scholarly journals Subtypes of glial cells in the Drosophila embryonic ventral nerve cord as related to lineage and gene expression

2008 ◽  
Vol 125 (5-6) ◽  
pp. 542-557 ◽  
Author(s):  
Ruth M. Beckervordersandforth ◽  
Christof Rickert ◽  
Benjamin Altenhein ◽  
Gerhard M. Technau
Keyword(s):  
Gene Expression ◽  
Glial Cells ◽  
Nerve Cord ◽  
Ventral Nerve Cord

scholarly journals Mutations Affecting Nerve Attachment of Caenorhabditis elegans

Genetics ◽  
2001 ◽  
Vol 157 (4) ◽  
pp. 1611-1622 ◽  
Author(s):  
Go Shioi ◽  
Michinari Shoji ◽  
Masashi Nakamura ◽  
Takeshi Ishihara ◽  
Isao Katsura ◽  
...  
Keyword(s):  
Caenorhabditis Elegans ◽  
Nerve Cord ◽  
Ventral Nerve Cord ◽  
Body Wall ◽  
The Body ◽  
Genetic Loci ◽  
Muscle Attachment ◽  
C Elegans ◽  
Ventral Cord ◽  
Excretory Canal

Abstract Using a pan-neuronal GFP marker, a morphological screen was performed to detect Caenorhabditis elegans larval lethal mutants with severely disorganized major nerve cords. We recovered and characterized 21 mutants that displayed displacement or detachment of the ventral nerve cord from the body wall (Ven: ventral cord abnormal). Six mutations defined three novel genetic loci: ven-1, ven-2, and ven-3. Fifteen mutations proved to be alleles of previously identified muscle attachment/positioning genes, mup-4, mua-1, mua-5, and mua-6. All the mutants also displayed muscle attachment/positioning defects characteristic of mua/mup mutants. The pan-neuronal GFP marker also revealed that mutants of other mua/mup loci, such as mup-1, mup-2, and mua-2, exhibited the Ven defect. The hypodermis, the excretory canal, and the gonad were morphologically abnormal in some of the mutants. The pleiotropic nature of the defects indicates that ven and mua/mup genes are required generally for the maintenance of attachment of tissues to the body wall in C. elegans.

Serotonin-induced nitric oxide production in the ventral nerve cord of the earthworm, Eisenia fetida

2001 ◽  
Vol 41 (2) ◽  
pp. 129-134 ◽  
Author(s):  
Yoshiichiro Kitamura ◽  
Yuichi Naganoma ◽  
Haruhito Horita ◽  
Hiroto Ogawa ◽  
Kotaro Oka
Keyword(s):  
Nitric Oxide ◽  
Nerve Cord ◽  
Eisenia Fetida ◽  
Ventral Nerve Cord ◽  
Nitric Oxide Production ◽  
Oxide Production
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