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Related Experiment Video

Updated: Feb 6, 2026

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
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Ouabain increases neuronal branching in hippocampus and improves spatial memory.

Ana Maria Orellana1, Jacqueline Alves Leite1, Paula Fernanda Kinoshita1

  • 1Department of Pharmacology, Institute of Biomedical Science I University of São Paulo, Room 338, Av. Prof. Lineu Prestes, 1524, ICB I, Cidade Universitária, 05508-900, São Paulo, SP. Brazil.

Neuropharmacology
|August 13, 2018
PubMed
Summary

Ouabain (OUA) enhances brain plasticity and memory by activating key signaling pathways like Wnt/β-Catenin, CREB/BDNF, and NFκB in the hippocampus. This leads to improved memory and prevents memory loss.

Keywords:
BDNFDendritic branchingHippocampusOuabainReference memoryWnt

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Cellular Biology

Background:

  • Ouabain (OUA) interacts with Na, K-ATPase, influencing signaling pathways like NFκB and CREB.
  • These pathways regulate neuroprotection and memory via BDNF and WNT-β-catenin signaling.

Purpose of the Study:

  • To investigate the effects of OUA on signaling pathways crucial for hippocampal morphological plasticity and memory.
  • To determine OUA's impact on Wnt/β-Catenin, CREB/BDNF, and NFκB in adult rat hippocampus.

Main Methods:

  • Intrahippocampal injection of Ouabain (10 nM) in adult rats.
  • Analysis of key signaling pathway activation and molecular levels.
  • Assessment of hippocampal neuronal morphology and spatial memory performance.

Main Results:

  • Intrahippocampal OUA (10 nM) activated the Wnt/β-Catenin signaling pathway.
  • OUA increased levels of CREB/BDNF and NFκB in the hippocampus.
  • Observed enhanced dendritic branching, improved spatial memory, and inhibited memory extinction.

Conclusions:

  • Ouabain modulates critical signaling pathways involved in memory and plasticity.
  • The study demonstrates OUA's potential to enhance memory formation and prevent extinction.
  • Findings suggest OUA's role in neuroprotection and cognitive function through hippocampal mechanisms.