Morphometric analysis of feedforward pathways from the primary somatosensory area (S1) of rats

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dc.contributor.authorde Sá, A.L.
dc.contributor.authorBahia, C.P.
dc.contributor.authorCorrea, V.C.
dc.contributor.authorDias, I.A.
dc.contributor.authorBatista, C.
dc.contributor.authorGomes-Leal, W.
dc.contributor.authorPinho, A.L.S.
dc.contributor.authorHouzel, J.C.
dc.contributor.authorPicanço-Diniz, C.W.
dc.contributor.authorPereira, A.
dc.date.accessioned2017-05-25T12:07:49Z
dc.date.available2017-05-25T12:07:49Z
dc.date.issued2016
dc.description.resumoWe used biotinylated dextran amine (BDA) to anterogradely label individual axons projecting from primary somatosensory cortex (S1) to four different cortical areas in rats. A major goal was to determine whether axon terminals in these target areas shared morphometric similarities based on the shape of individual terminal arbors and the density of two bouton types: en passant (Bp) and terminaux (Bt). Evidence from tridimensional reconstructions of isolated axon terminal fragments (n=111) did support a degree of morphological heterogeneity establishing two broad groups of axon terminals. Morphological parameters associated with the complexity of terminal arbors and the proportion of beaded Bp vs stalked Bt were found to differ significantly in these two groups following a discriminant function statistical analysis across axon fragments. Interestingly, both groups occurred in all four target areas, possibly consistent with a commonality of presynaptic processing of tactile information. These findings lay the ground for additional work aiming to investigate synaptic function at the single bouton level and see how this might be associated with emerging properties in postsynaptic targets.pt_BR
dc.identifier.doihttp://dx.doi.org/10.1590/1414-431X20155115
dc.identifier.urihttps://repositorio.ufrn.br/jspui/handle/123456789/23072
dc.languageengpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectSomatosensory cortexpt_BR
dc.subjectBarrel fieldpt_BR
dc.subjectFeedforward networkspt_BR
dc.subjectAxon terminalpt_BR
dc.subjectAxon morphometrypt_BR
dc.titleMorphometric analysis of feedforward pathways from the primary somatosensory area (S1) of ratspt_BR
dc.typearticlept_BR

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