The effects of taxol on the central nervous system response to physical injury. 2000

P A Adlard, and C E King, and J C Vickers
Department of Pathology, University of Tasmania, Hobart, Australia.

Cytoskeletal disruption is a key pathological change in numerous human neurodegenerative diseases. We have, therefore, examined the effect of taxol, a microtubule-stabilising agent, on the neuronal response to localised trauma in the central nervous system utilising a rodent experimental model that replicates cytoskeletal alterations which occur in conditions such as Alzheimer's disease and head injury. At 1 day post-injury, 1 mM taxol administration to the damaged neocortex resulted in a statistically significant reduction in the density of abnormal neurites labelled with antibodies to neurofilaments. In addition, there was a relative preservation of MAP2 labelling of dendrites surrounding the injury site in taxol-treated, as compared to vehicle-treated, animals at 1 day post-injury. At 4 days post-injury, however, there was a statistically significant increase in the density of abnormal neurites surrounding the injury site in taxol-treated rats as compared to vehicle-treated animals. The degree of MAP2 labelling was also equally decreased in both vehicle- and taxol-treated animals as compared to normal cortex at this time point. Our data suggest that, in the short term, taxol may be stabilising neuronal microtubules and reducing reactive alterations in axons. After longer periods, however, our data indicate that the stereotypical neuronal reaction to trauma may be abnormally prolonged due to taxol administration, consistent with both in vivo work on taxol intoxication in the injured peripheral nervous system and in vitro culture studies.

UI MeSH Term Description Entries
D008869 Microtubule-Associated Proteins High molecular weight proteins found in the MICROTUBULES of the cytoskeletal system. Under certain conditions they are required for TUBULIN assembly into the microtubules and stabilize the assembled microtubules. Ensconsin,Epithelial MAP, 115 kDa,Epithelial Microtubule-Associate Protein, 115 kDa,MAP4,Microtubule Associated Protein,Microtubule Associated Protein 4,Microtubule Associated Protein 7,Microtubule-Associated Protein,Microtubule-Associated Protein 7,E-MAP-115,MAP1 Microtubule-Associated Protein,MAP2 Microtubule-Associated Protein,MAP3 Microtubule-Associated Protein,Microtubule Associated Proteins,Microtubule-Associated Protein 1,Microtubule-Associated Protein 2,Microtubule-Associated Protein 3,7, Microtubule-Associated Protein,Associated Protein, Microtubule,E MAP 115,Epithelial Microtubule Associate Protein, 115 kDa,MAP1 Microtubule Associated Protein,MAP2 Microtubule Associated Protein,MAP3 Microtubule Associated Protein,Microtubule Associated Protein 1,Microtubule Associated Protein 2,Microtubule Associated Protein 3,Microtubule-Associated Protein, MAP1,Microtubule-Associated Protein, MAP2,Microtubule-Associated Protein, MAP3,Protein 7, Microtubule-Associated,Protein, Microtubule Associated,Protein, Microtubule-Associated
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D001930 Brain Injuries Acute and chronic (see also BRAIN INJURIES, CHRONIC) injuries to the brain, including the cerebral hemispheres, CEREBELLUM, and BRAIN STEM. Clinical manifestations depend on the nature of injury. Diffuse trauma to the brain is frequently associated with DIFFUSE AXONAL INJURY or COMA, POST-TRAUMATIC. Localized injuries may be associated with NEUROBEHAVIORAL MANIFESTATIONS; HEMIPARESIS, or other focal neurologic deficits. Brain Lacerations,Acute Brain Injuries,Brain Injuries, Acute,Brain Injuries, Focal,Focal Brain Injuries,Injuries, Acute Brain,Injuries, Brain,Acute Brain Injury,Brain Injury,Brain Injury, Acute,Brain Injury, Focal,Brain Laceration,Focal Brain Injury,Injuries, Focal Brain,Injury, Acute Brain,Injury, Brain,Injury, Focal Brain,Laceration, Brain,Lacerations, Brain
D003599 Cytoskeleton The network of filaments, tubules, and interconnecting filamentous bridges which give shape, structure, and organization to the cytoplasm. Cytoplasmic Filaments,Cytoskeletal Filaments,Microtrabecular Lattice,Cytoplasmic Filament,Cytoskeletal Filament,Cytoskeletons,Filament, Cytoplasmic,Filament, Cytoskeletal,Filaments, Cytoplasmic,Filaments, Cytoskeletal,Lattice, Microtrabecular,Lattices, Microtrabecular,Microtrabecular Lattices
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D016900 Neurofilament Proteins Type III intermediate filament proteins that assemble into neurofilaments, the major cytoskeletal element in nerve axons and dendrites. They consist of three distinct polypeptides, the neurofilament triplet. Types I, II, and IV intermediate filament proteins form other cytoskeletal elements such as keratins and lamins. It appears that the metabolism of neurofilaments is disturbed in Alzheimer's disease, as indicated by the presence of neurofilament epitopes in the neurofibrillary tangles, as well as by the severe reduction of the expression of the gene for the light neurofilament subunit of the neurofilament triplet in brains of Alzheimer's patients. (Can J Neurol Sci 1990 Aug;17(3):302) Neurofilament Protein,Heavy Neurofilament Protein,Neurofilament Triplet Proteins,Neurofilament Protein, Heavy,Protein, Heavy Neurofilament,Protein, Neurofilament,Proteins, Neurofilament,Proteins, Neurofilament Triplet,Triplet Proteins, Neurofilament
D017208 Rats, Wistar A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain. Wistar Rat,Rat, Wistar,Wistar Rats
D017239 Paclitaxel A cyclodecane isolated from the bark of the Pacific yew tree, TAXUS BREVIFOLIA. It stabilizes MICROTUBULES in their polymerized form leading to cell death. 7-epi-Taxol,Anzatax,Bris Taxol,NSC-125973,Onxol,Paclitaxel, (4 alpha)-Isomer,Paxene,Praxel,Taxol,Taxol A,7 epi Taxol,NSC 125973,NSC125973,Taxol, Bris
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus
D019579 Neocortex The largest portion of the CEREBRAL CORTEX in which the NEURONS are arranged in six layers in the mammalian brain: molecular, external granular, external pyramidal, internal granular, internal pyramidal and multiform layers. Cerebral Neocortex,External Granular Layer,Isocortex,Neocortical External Granular Layer,Neocortical External Pyramidal Layer,Neocortical Internal Granular Layer,Neocortical Internal Pyramidal Layer,Neocortical Molecular Layer,Neocortical Multiform Layer,Neopallial Cortex,Neopallium,Substantia Corticalis,Cerebral Neocortices,Cortex, Neopallial,Corticali, Substantia,Corticalis, Substantia,Cortices, Neopallial,External Granular Layers,Granular Layer, External,Granular Layers, External,Isocortices,Layer, External Granular,Layer, Neocortical Molecular,Layer, Neocortical Multiform,Layers, External Granular,Layers, Neocortical Molecular,Layers, Neocortical Multiform,Molecular Layer, Neocortical,Molecular Layers, Neocortical,Multiform Layer, Neocortical,Multiform Layers, Neocortical,Neocortex, Cerebral,Neocortical Molecular Layers,Neocortical Multiform Layers,Neocortices,Neocortices, Cerebral,Neopallial Cortices,Neopalliums,Substantia Corticali

Related Publications

P A Adlard, and C E King, and J C Vickers
June 1979, Journal of anatomy,
P A Adlard, and C E King, and J C Vickers
January 2022, Seminars in immunology,
P A Adlard, and C E King, and J C Vickers
August 1985, Brain research,
P A Adlard, and C E King, and J C Vickers
January 1998, Medical and pediatric oncology,
P A Adlard, and C E King, and J C Vickers
August 1986, Neurosurgery,
P A Adlard, and C E King, and J C Vickers
May 1988, The Veterinary clinics of North America. Small animal practice,
P A Adlard, and C E King, and J C Vickers
January 2018, Developmental dynamics : an official publication of the American Association of Anatomists,
P A Adlard, and C E King, and J C Vickers
January 1979, Cor et vasa,
P A Adlard, and C E King, and J C Vickers
February 1995, Neurochemistry international,
P A Adlard, and C E King, and J C Vickers
March 1996, The Journal of trauma,
Copied contents to your clipboard!