Cited by 339Phytochemicals and Medicinal PlantsMedicinal Plants and NeuroprotectionNerve injury and regeneration

Neuritic regeneration and synaptic reconstruction induced by withanolide A

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Kuboyama, Tomoharu, Tohda, Chihiro, Komatsu, Katsuko·2005·British Journal of Pharmacology

Abstract

We investigated whether withanolide A (WL-A), isolated from the Indian herbal drug Ashwagandha (root of Withania somnifera), could regenerate neurites and reconstruct synapses in severely damaged neurons. We also investigated the effect of WL-A on memory-deficient mice showing neuronal atrophy and synaptic loss in the brain. Axons, dendrites, presynapses, and postsynapses were visualized by immunostaining for phosphorylated neurofilament-H (NF-H), microtubule-associated protein 2 (MAP2), synaptophysin, and postsynaptic density-95 (PSD-95), respectively. Treatment with A beta(25-35) (10 microM) induced axonal and dendritic atrophy, and pre- and postsynaptic loss in cultured rat cortical neurons. Subsequent treatment with WL-A (1 microM) induced significant regeneration of both axons and dendrites, in addition to the reconstruction of pre- and postsynapses in the neurons. WL-A (10 micromol kg(-1) day(-1), for 13 days, p.o.) recovered A beta(25-35)-induced memory deficit in mice. At that time, the decline of axons, dendrites, and synapses in the cerebral cortex and hippocampus was almost recovered. WL-A is therefore an important candidate for the therapeutic treatment of neurodegenerative diseases, as it is able to reconstruct neuronal networks.

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Authors
Kuboyama, T., Tohda, C., & Komatsu, K.
Affiliations
  • University of Toyama (JP)
  • Institute of Natural Medicine, University of Toyama (JP)
Corresponding author
Komatsu, Katsuko
Venue
British Journal of Pharmacology
Publisher
Wiley
Published
2005-04
Volume
144
Issue
7
Pages
961-971
ISSN
  • 0007-1188 (ISSN-L)
  • 1476-5381
OpenAlex
W2062620653
Cited by
339
References
45
Citations by year
2026: 17 · 2025: 12 · 2024: 21 · 2023: 25 · 2022: 20 · 2021: 21 · 2020: 21 · 2019: 11 · 2018: 19 · 2017: 22 · 2016: 20 · 2015: 23 · 2014: 16 · 2013: 21 · 2012: 15
FWCI
17.90
Type
journal article
Language
en
Open access
Locations
  • British Journal of Pharmacology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Phytochemicals and Medicinal Plants
  • Health Sciences › Medicine › Complementary and alternative medicine › Medicinal Plants and Neuroprotection
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
Keywords
withanolide A, Withania somnifera, neurite regeneration, axonal atrophy, dendritic atrophy, synaptic loss, amyloid beta 25-35, memory impairment, neurodegenerative diseases, neurofilament H, synaptophysin, PSD-95, cortical neurons, hippocampus, neuroprotection
MeSH terms
Animals, Cells, Cultured, Female, Nerve Regeneration, Plant Extracts, Pregnancy, Synapses, Neurites, Rats, Sprague-Dawley, Plant Roots, Withania, Rats

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