Cited by 35Alzheimer's disease research and treatmentsMedicinal Plants and NeuroprotectionCholinesterase and Neurodegenerative Diseases

Secondary Metabolites from Plants Possessing Inhibitory Properties against Beta-Amyloid Aggregation as Revealed by Thioflavin-T Assay and Correlations with Investigations on Transgenic Mouse Models of Alzheimer's Disease

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Stefanescu, Raluca, Stanciu, Gabriela Dumitriṭa, Luca, Andrei, Paduraru, Luminita, Tamba, Bogdan-Ionel·2020·Biomolecules

Abstract

Alzheimer's disease is a neurodegenerative disorder for which there is a continuous search of drugs able to reduce or stop the cognitive decline. Beta-amyloid peptides are composed of 40 and 42 amino acids and are considered a major cause of neuronal toxicity. They are prone to aggregation, yielding oligomers and fibrils through the inter-molecular binding between the amino acid sequences (17-42) of multiple amyloid-beta molecules. Additionally, amyloid deposition causes cerebral amyloid angiopathy. The present study aims to identify, in the existing literature, natural plant derived products possessing inhibitory properties against aggregation. The studies searched proved the anti-aggregating effects by the thioflavin T assay and through behavioral, biochemical, and histological analysis carried out upon administration of natural chemical compounds to transgenic mouse models of Alzheimer's disease. According to our present study results, fifteen secondary metabolites from plants were identified which presented both evidence coming from the thioflavin T assay and transgenic mouse models developing Alzheimer's disease and six additional metabolites were mentioned due to their inhibitory effects against fibrillogenesis. Among them, epigallocatechin-3-gallate, luteolin, myricetin, and silibinin were proven to lower the aggregation to less than 40%.

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Authors
Stefanescu, R., Stanciu, G. D., Luca, A., Paduraru, L., & Tamba, B.-I.
Affiliations
  • Center for Advanced Research and Development in Experimental Medicine (CEMEX), “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
  • Grigore T. Popa University of Medicine and Pharmacy (RO)
  • Division Neonatology, Department Mother & Child Care, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
Venue
Biomolecules
Publisher
MDPI AG
Published
2020-06-06
Volume
10
Issue
6
Pages
870
ISSN
2218-273X (ISSN-L)
OpenAlex
W3033682886
Cited by
35
References
105
Citations by year
2026: 3 · 2025: 6 · 2024: 4 · 2023: 5 · 2022: 7 · 2021: 6 · 2020: 4
FWCI
0.70
Type
journal article
Language
en
Open access
Locations
  • Biomolecules (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Universitatea de Medicina și Farmacie Grigore T. Popa - Iasi (27498/20.12.2018)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Complementary and alternative medicine › Medicinal Plants and Neuroprotection
  • Health Sciences › Medicine › Pharmacology › Cholinesterase and Neurodegenerative Diseases
Keywords
Alzheimer's disease, amyloid-beta aggregation, plant secondary metabolites, Thioflavin T assay, transgenic mouse model, fibrillogenesis inhibition, epigallocatechin gallate, luteolin, myricetin, silibinin, natural products
MeSH terms
Silybin, Alzheimer Disease, Animals, Biological Products, Catechin, Flavonoids, Fluorescent Dyes, Mice, Transgenic, Amyloid beta-Peptides, Luteolin, Mice, Benzothiazoles, Protein Aggregates

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