Impact Of Acute Inflammation On Spinal Motoneuron Synaptic Plasticity Following Ventral Root Avulsion.

dc.creatorBarbizan, Roberta
dc.creatorOliveira, Alexandre L R
dc.date2010
dc.date2015-11-27T13:17:50Z
dc.date2015-11-27T13:17:50Z
dc.date.accessioned2018-03-29T01:10:50Z
dc.date.available2018-03-29T01:10:50Z
dc.identifierJournal Of Neuroinflammation. v. 7, p. 29, 2010.
dc.identifier1742-2094
dc.identifier10.1186/1742-2094-7-29
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/20441580
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/198834
dc.identifier20441580
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1299067
dc.descriptionVentral root avulsion is a proximal nerve root lesion in which ventral motor nerve rootlets are torn from surface of the spinal cord, resulting in extensive death of motoneurons. It has been previously shown that if such lesioning is performed in an animal with experimental autoimmune encephalomyelitis (EAE), a significant number of motoneurons can be rescued despite an intense inflammatory reaction. This rescue effect has been attributed to production of a number of neurotrophic factors by invading T cells. Synaptological changes may be involved in neuronal degeneration, and a better understanding of the role of these changes may be of importance for developing new strategies to promote neuronal survival. The objective of the present work was to evaluate neuronal survival, astroglial reaction and synaptic input changes in spinal cord anterior horn motor nuclei after ventral root avulsion in animals with EAE, both during peak disease and after remission. Lewis rats were subjected to unilateral avulsion of lumbar ventral roots (VRA) and divided into three groups: VRA control, VRA at peak of EAE, and VRA during EAE remission. The animals were sacrificed and their lumbar spinal cords processed for immunohistochemistry, transmission electron microscopy, and motoneuron counting. The results indicate a reduction in astroglial reaction, a maintenance of microglial reactivity, and increases in synaptic covering of, and survival of, motoneurons in the VRA+EAE group as compared to VRA alone. The present findings indicate that CNS inflammation may directly influence synaptic plasticity as well as the stability of neuronal networks, positively influencing the survival of lesioned neurons.
dc.description7
dc.description29
dc.languageeng
dc.relationJournal Of Neuroinflammation
dc.relationJ Neuroinflammation
dc.rightsaberto
dc.rights
dc.sourcePubMed
dc.subjectAnimals
dc.subjectCell Count
dc.subjectCell Survival
dc.subjectEncephalomyelitis, Autoimmune, Experimental
dc.subjectFemale
dc.subjectFreund's Adjuvant
dc.subjectGuinea Pigs
dc.subjectImmunohistochemistry
dc.subjectInflammation
dc.subjectMicroscopy, Electron, Transmission
dc.subjectMotor Neurons
dc.subjectMyelin Basic Protein
dc.subjectNeuronal Plasticity
dc.subjectRadiculopathy
dc.subjectRats
dc.subjectRats, Inbred Lew
dc.subjectSpinal Cord
dc.subjectSynapses
dc.subjectT-lymphocytes
dc.titleImpact Of Acute Inflammation On Spinal Motoneuron Synaptic Plasticity Following Ventral Root Avulsion.
dc.typeArtículos de revistas


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