Cited by 175Medicinal Plants and NeuroprotectionAlzheimer's disease research and treatmentsGinkgo biloba and Cashew Applications

Centella asiatica extract selectively decreases amyloid β levels in hippocampus of Alzheimer's disease animal model

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Dhanasekaran, Muralikrishnan, Holcomb, Leigh A., Hitt, Angie R., Tharakan, Binu, Porter, Jami W., Young, Keith A., Manyam, Bala V.·2009·Phytotherapy Research

Abstract

PSAPP mice expressing the 'Swedish' amyloid precursor protein and the M146L presenilin 1 mutations are a well-characterized model for spontaneous amyloid beta plaque formation. Centella asiatica has a long history of use in India as a memory enhancing drug in Ayurvedic literature. The study investigated whether Centella asiatica extract (CaE) can alter the amyloid pathology in PSAPP mice by administering CaE (2.5 or 5.0 g/kg/day) starting at 2 months of age prior to the onset of detectable amyloid deposition and continued for either 2 months or 8 months. A significant decrease in amyloid beta 1-40 and 1-42 was detectable by ELISA following an 8 month treatment with 2.5 mg/kg of CaE. A reduction in Congo Red stained fibrillar amyloid plaques was detected with the 5.0 mg/kg CaE dose and long-term treatment regimen. It was also confirmed that CaE functions as an antioxidant in vitro, scavenging free radicals, reducing lipid peroxidation and protecting against DNA damage. The data indicate that CaE can impact the amyloid cascade altering amyloid beta pathology in the brains of PSAPP mice and modulating components of the oxidative stress response that has been implicated in the neurodegenerative changes that occur with Alzheimer's disease.

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Crossref · 10.1002/ptr.2405

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  • Eight month treatment with 2.5 mg/kg of aqueous extract of Centella asiatica significantly decreased amyloid beta 1-40 and 1-42 levels in the hippocampus of PSAPP transgenic mice.

    “Dhanasekaran et al. [55] found that an 8 month treatment with 2.5 mg/kg of aqueous extract of C. asiatica significantly decreased amyloid beta 1-40 and 1-42 levels in the hippocampus of PSAPP transgenic mice expressing “Swedish” amyloid precursor protein and M146L presenilin 1 mutations, which result in spontaneous amyloid beta plaque formation.”
  • Long-term treatment with 5.0 mg/kg Centella asiatica reduced Congo red stained fibrillar amyloid plaques.

    “A reduction in Congo red stained fibrillar amyloid plaques was detected on the long-term treatment with 5.0 mg/kg dose.”
  • Treatment with 2.5 mg/kg Centella asiatica extract significantly reduced hippocampal Abeta1-40 and Abeta-1-42 levels in double-transgenic PS/APP mice.

    “Furthermore, by utilizing double-transgenic PS/APP mice, which spontaneously generate Aβ plaques, studies have demonstrated that treatment with 2.5 mg/kg of C. asiatica extract significantly reduced hippocampal Abeta1-40 and Abeta-1-42 levels [65].”
  • Long-term treatment with higher dosages of aqueous Centella asiatica extract eventuated in a significant decline in Congo red-positive amyloid fibrillar plaques.

    “Consequently, long-term treatment with higher dosages of aqueous C. asiatica extract eventuated in a significant decline in Congo red-positive amyloid fibrillar plaques [65].”
  • Centella asiatica extract has significant scavenging activity of reactive oxygen species, with 83% of reactive oxygen species removed at a 250 μg dosage.

    “Additionally, there was significant scavenging activity of reactive oxygen species with the lowest dosage utilized, which was 25 μg, and 83% of the reactive oxygen species were removed with a 250 μg dosage [65].”

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  1. Copyright © 2008 John Wiley & Sons, Ltd. Phytother. Res. 23, 14-19 (2009) DOI: 10.1002/ptr · DOI

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Authors
Dhanasekaran, M., Holcomb, L. A., Hitt, A. R., Tharakan, B., Porter, J. W., Young, K. A., & Manyam, B. V.
Affiliations
Texas A&M University System (US)
Corresponding author
Manyam, Bala V.
Venue
Phytotherapy Research
Publisher
Wiley
Published
2008-12
Volume
23
Issue
1
Pages
14-19
ISSN
  • 0951-418X (ISSN-L)
  • 1099-1573
OpenAlex
W1987051386
Cited by
175
References
48
Citations by year
2026: 2 · 2025: 8 · 2024: 8 · 2023: 13 · 2022: 17 · 2021: 20 · 2020: 18 · 2019: 7 · 2018: 8 · 2017: 10 · 2016: 8 · 2015: 7 · 2014: 12 · 2013: 10 · 2012: 15
FWCI
11.71
Type
journal article
Language
en
Open access
Locations
  • Phytotherapy Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • NIH-NCCAM (AT01109-01)
  • Scott, Sherwood and Brindley Foundation
  • Helen Vosburg McCrillus Plummer and Robert Edward Lee Plummer, Jr. Endowed Fund; Veterans Administration
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Medicinal Plants and Neuroprotection
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Complementary and alternative medicine › Ginkgo biloba and Cashew Applications
Keywords
Centella asiatica, Alzheimer's disease, amyloid-beta, amyloid plaques, amyloid precursor protein, presenilin 1, oxidative stress, antioxidant activity, lipid peroxidation, DNA damage, hippocampus, Ayurveda, neuroprotection
MeSH terms
Alzheimer Disease, Animals, Hippocampus, Medicine, Ayurvedic, Mice, Transgenic, Plant Extracts, Triterpenes, Lipid Peroxidation, Amyloid beta-Peptides, Reactive Oxygen Species, Oxidative Stress, Neuroprotective Agents, Centella, Mice, Plaque, Amyloid

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