Transgenic mouse models of Alzheimer's disease: phenotype and mechanisms of pathogenesis

2001 ◽  
Vol 67 ◽  
pp. 195-202 ◽  
Author(s):  
Karen Duff

A range of transgenic mice have been created to model Alzheimer's disease. These include mice expressing human forms of the amyloid precursor protein, the presenilins and, more recently, tau. Several of the models develop features of the disease including amyloid pathology, cholinergic deficits, neurodegeneration and cognitive impairment. Progress in the characterization and use of these model animals is discussed.

Biomolecules ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 870 ◽  
Author(s):  
Raluca Stefanescu ◽  
Gabriela Dumitriṭa Stanciu ◽  
Andrei Luca ◽  
Luminita Paduraru ◽  
Bogdan-Ionel Tamba

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%.


2014 ◽  
Vol 39 (4) ◽  
pp. 871-881 ◽  
Author(s):  
Jochim Reinert ◽  
Henrik Martens ◽  
Melanie Huettenrauch ◽  
Tekla Kolbow ◽  
Lars Lannfelt ◽  
...  

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