The multitubulin hypothesis holds that each tubulin isotype serves a unique role with respect to microtubule function. Here we investigate the role of the α-tubulin subunit Tuba1a in adult hippocampal neurogenesis and the formation of the dentate gyrus. Employing birth date labelling and immunohistological markers, we show that mice harbouring an S140G mutation in Tuba1a present with normal neu...

Forming distinct representations of multiple contexts, places, and episodes is a crucial function of the hippocampus. The dentate gyrus subregion has been suggested to fulfill this role. We have tested this hypothesis by generating and analyzing a mouse strain that lacks the gene encoding the essential subunit of the N-methyl-d-aspartate (NMDA) receptor NR1, specifically in dentate gyrus granul...

This report provides in vivo evidence of adult neurogenesis and the total granule cell count in the dentate gyrus of the Tg2576 mouse model of Alzheimer's disease. Mice were deeply anaesthetized and perfused with 4 percent buffered paraformaldehyde. Brains were removed and post-fixed in the same fixative overnight. Following equilibration in 30 percent sucrose, 30 micrometer sections were cut i...

We investigated the effect of injection of a local anesthetic, tetracaine, into the ipsilateral basolateral amygdala (BLA) on long-term potentiation (LTP) in the medial perforant path-dentate gyrus granule cell synapses of anesthetized rats. The dentate gyrus synaptic potential evoked by low frequency test stimulation did not change following tetracaine injection into BLA. However, when tetanic...

An in vivo screen was performed in search of chemicals capable of enhancing neuron formation in the hippocampus of adult mice. Eight of 1000 small molecules tested enhanced neuron formation in the subgranular zone of the dentate gyrus. Among these was an aminopropyl carbazole, designated P7C3, endowed with favorable pharmacological properties. In vivo studies gave evidence that P7C3 exerts its ...

Background & Aims: Neurogenesis in the adult mammal brain occurs throughout life. Adult neurogenesis has been clearly demonstrated in the sub granular zone (SGZ) of the dentate gyrus (DG) in the hippocampus. Pheromones that plays an essential role in the development of the central nervous system. The male pheromones are involved in regulating neurogenesis in both the olfactory bulb and hippocam...

Introduction: The effects of cannabinoids (CBs) on synaptic plasticity of hippocampal dentate gyrus neurons have been shown in numerous studies. However, the effect of repeated exposure to cannabinoids on hippocampal function is not fully understood. In this study, using field potential recording, we investigated the effect of repeated administration of the nonselective CB receptor agonist WIN5...