Characterization of the canine rostral ventricular-subventricular zone: Morphological, immunohistochemical, ultrastructural, and neurosphere assay studies

Francisco Fernández-Flores*, José Manuel García-Verdugo, Raquel Martín-Ibáñez, Cristina Herranz, Dolors Fondevila, Josep María Canals, Carles Arús, Martí Pumarola

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)

Abstract

The mammalian ventricular-subventricular zone (V-SVZ) presents the highest neurogenic potential in the brain of the adult individual. In rodents, it is mainly composed of chains of neuroblasts. In humans, it is organized in layers where neuroblasts do not form chains. The aim of this study is to describe the cytoarchitecture of canine V-SVZ (cV-SVZ), to assess its neurogenic potential, and to compare our results with those previously described in other species. We have studied by histology, immunohistochemistry (IHC), electron microscopy and neurosphere assay the morphology, cytoarchitecture and neurogenic potential of cV-SVZ. Age groups of animals were performed. Histological and ultrastructural studies indicated that the cV-SVZ is organized in layers as in humans, but including migratory chains as in rodents. Neural progenitors were organized in niches in the subependymal area and a decline in their number was observed with age. Adult-young dogs contained migratory cells capable to expand and differentiate in vitro according with previous results obtained in rodents, primates, humans, pigs, and dogs. Some adult animals presented perivascular niches outside the V-SVZ. Our observations evidence a great similarity between canine and human V-SVZ indicating that the dog may be better representative of neurogenic events in humans, compared with rodents. Accordingly with our results, we conclude that dogs are a valuable animal model of adult neurogenesis in comparative and preclinical studies.

Original languageAmerican English
Pages (from-to)721-741
Number of pages21
JournalJournal of Comparative Neurology
Volume526
Issue number4
DOIs
Publication statusPublished - 1 Mar 2018

Keywords

  • adult neurogenesis
  • cell culture
  • cytoarchitecture
  • dog
  • histology
  • RRID:AB_10013382
  • RRID:AB_10141047
  • RRID:AB_2142367
  • RRID:AB_2210524
  • RRID:AB_2313665
  • ventricular-subventricular zone

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