Gavin S. Bennett

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The inability of axons to regenerate after a spinal cord injury in the adult mammalian central nervous system (CNS) can lead to permanent paralysis. At sites of CNS injury, a glial scar develops, containing extracellular matrix molecules including chondroitin sulphate proteoglycans (CSPGs). CSPGs are inhibitory to axon growth in vitro, and regenerating(More)
Pyruvate carboxylase is the predominant anaplerotic enzyme in CNS tissues, and thus provides for net utilization of glucose to generate citric acid cycle intermediates such as alpha-ketoglutarate and malate for replenishment of the neurotransmitter pools of glutamate, GABA and aspartate. Studies reported in this paper involving immunocytochemical and(More)
Hereditary hypotrophic axonopathy is an inherited, neuronal cytoskeletal disease of the "quiver" mutant quail (Quv). Nerve tissue pathology is characterized by axonal hypotrophy associated with neurofilament (NF) deficiency in the central and peripheral nervous system. To elucidate the biochemical mechanism of this disease, we examined the in vivo(More)
Using monospecific antisera against each of the three chicken neurofilament (NF) proteins, NF70, NF160 and NF180, the distribution of each of these proteins in several types of neurons was examined by immunohistochemistry. Striking differences were observed in the relative staining by the three antibodies when the soma of different types of neurons were(More)
An immunohistochemical survey was carried out on frozen sections of the early embryonic chick brain between 1 and 6 days of incubation, with antisera to the three neurofilament proteins (NF-L, NF-M, NF-H). Large numbers of replicating neuroepithelial cells were found to express one of these proteins, NF-M, generations before the existence of any postmitotic(More)
The tail domain of the midsize chicken neurofilament polypeptide (NF-M) contains several different types of Ser-Pro and Thr-Pro putative phosphorylation sites. We determined which of these sites are actually phosphorylated in vivo. Chick sensory neuron cultures were incubated in [32P]phosphate, and the cytoskeletal fraction was mixed with a neurofilament(More)