Effects of beta-amyloid (25-35) on learning in the common snail.

Neurosci Behav Physiol

Laboratory for the Cellular Neurobiology of Learning, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.

Published: May 2008

AI Article Synopsis

Article Abstract

The effects of neurotoxic beta-amyloid fragment (25-35) on the formation of behavioral sensitization and a conditioned defensive reflex to food were studied. Administration of beta-amyloid (25-35) to common snails before the start of training led to a significant reduction in sensitization of the defensive reaction, weakening of the formation of the conditioned defensive reflex to food, and impairment of memory. These impairments to behavioral plasticity may be mediated by changes in synaptic plasticity previously observed in the presence of beta-amyloid.

Download full-text PDF

Source
http://dx.doi.org/10.1007/s11055-008-0054-7DOI Listing

Publication Analysis

Top Keywords

beta-amyloid 25-35
8
conditioned defensive
8
defensive reflex
8
reflex food
8
effects beta-amyloid
4
25-35 learning
4
learning common
4
common snail
4
snail effects
4
effects neurotoxic
4

Similar Publications

Background: Fluoroethylnormemantine (FENM), a new Memantine (MEM) derivative, prevented amyloid-β[25-35] peptide (Aβ)-induced neurotoxicity in mice, a pharmacological model of Alzheimer's disease (AD) with high predictive value for drug discovery. Here, as drug infusion is likely to better reflect drug bioavailability due to the interspecies pharmacokinetics variation, we analyzed the efficacy of FENM after chronic subcutaneous (SC) infusion, in comparison with IP injections in two AD mouse models, Aβ-injected mice and the transgenic APP/PSEN1 (APP/PS1) line.

Methods: In Aβ-treated mice, FENM was infused at 0.

View Article and Find Full Text PDF

Alzheimer's disease (AD) is a neurodegenerative disorder that occurs with aging. Ganoderma lucidum (Curtis.) P.

View Article and Find Full Text PDF

Walnut-derived peptides cross the blood-brain barrier and ameliorate Aβ-induced hypersynchronous neural network activity.

Food Res Int

December 2024

College of Food Science and Engineering, Jilin Agricultural University, ChangChun, Jilin 130118, PR China. Electronic address:

Walnut peptides exhibit promising neuroprotective effects; however, they must be absorbed in their intact form through the gastrointestinal tract into the bloodstream and brain. In this study, the effects of the walnut peptide TWLPLPR (TW-7) were evaluated in mice, including its absorption and distribution ability to cross the blood-brain barrier, and inhibitory effects on hyperactivity of primary hippocampal neurons. TW-7 was stable in plasma, and the peptide retention rate was 88.

View Article and Find Full Text PDF

The central nervous system (CNS) involves a complex interplay of communications between the neurons and various glial cells, which is crucial for brain functions. The major interactomes are exosomes that transmit sundry molecules (DNA, miRNAs, and proteins) between the cells and thus alter cell physiology. Exosomes can act as neuroprotective or neurodegenerative agents depending on the microenvironment of cells secreting them.

View Article and Find Full Text PDF

Seven new alkaloids [, (±)-, (±)-, , and ] and one new natural product (), along with eight known analogues, were isolated from the tubers of Schott. Their structures were determined by a comprehensive analysis of spectroscopic data, including HRESIMS, and electronic circular dichroism (ECD). In addition, the results of the bioactivity evaluation showed that compounds (±)-, , and exhibited significantly protective effects against A-induced PC-12 cell injury and ameliorated cell viabilities by decreasing the levels of the reactive oxidative species (ROS) and mitochondrial membrane potential (MMP).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!