In the present work it has been evaluated the action of scopolamine on the extent of exploration in mice, whose exploring behaviour had been already earlier examined. Such behaviour has been evaluated using a hole-board. The goal has been to detect the influence of the substance on the short-term memory of mice. The method used has shown to be effective. By the exam of the results of this work it can be concluded that the scopolamine at a dose of 1 mg/kg has an evidence effect of short-time memory in mice by causing a hypomnesia.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Miniscope Imaging of Nucleus Accumbens Neural Activity in Freely Behaving Rats: Virus Injection, Gradient Index Lens Implantation, Recording Strategies, and Analytical Methods.
Curr Protoc
January 2025
Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland.
In vivo calcium imaging in freely moving rats using miniscopes provides valuable information about the neural mechanisms of behavior in real time. A gradient index (GRIN) lens can be implanted in deep brain structures to relay activity from single neurons. While such procedures have been successful in mice, few reports provide detailed procedures for successful surgery and long-term imaging in rats, which are better suited for studying complex human behaviors.
View Article and Find Full Text PDFCircular mRNA Vaccine against SARS-COV-2 Variants Enabled by Degradable Lipid Nanoparticles.
ACS Appl Mater Interfaces
January 2025
Suzhou CureMed Biopharma Technology Co., Ltd., Suzhou 215125, China.
The emergence of mRNA vaccines offers great promise and a potent platform in combating various diseases, notably COVID-19. Nevertheless, challenges such as inherent instability and potential side effects of current delivery systems underscore the critical need for the advancement of stable, safe, and efficacious mRNA vaccines. In this study, a robust mRNA vaccine (cmRNA-1130) eliciting potent immune activation has been developed from a biodegradable lipid with eight ester bonds in the branched tail (AX4) and synthetic circular mRNA (cmRNA) encoding the trimeric Delta receptor binding domain of the SARS-CoV-2 spike protein.
View Article and Find Full Text PDFPolicy complexity suppresses dopamine responses.
J Neurosci
January 2025
Department of Physiology, Anatomy and Genetics, University of Oxford.
Limits on information processing capacity impose limits on task performance. We show that male and female mice achieve performance on a perceptual decision task that is near-optimal given their capacity limits, as measured by policy complexity (the mutual information between states and actions). This behavioral profile could be achieved by reinforcement learning with a penalty on high complexity policies, realized through modulation of dopaminergic learning signals.
View Article and Find Full Text PDFNose-to-brain delivery of DHA-loaded nanoemulsions: A promising approach against Alzheimer's disease.
Int J Pharm
January 2025
MMDN, University of Montpellier, EPHE, INSERM, Montpellier, France; LipSTIC LabEx (ANR-11-LABX0021), Dijon, France. Electronic address:
Reduced docosahexaenoic acid (DHA) concentrations seem to be associated with an increased risk of Alzheimer's disease (AD), and DHA accretion to the brain across the blood-brain-barrier (BBB) can be modulated by various factors. Therefore, there is an urgent need to identify an efficient and non-invasive method to ensure brain DHA enrichment. In the present study, a safe and stable DHA-enriched nanoemulsion, designed to protect DHA against oxidation, was designed and administered intranasally in a transgenic mouse model of AD, the J20 mice.
View Article and Find Full Text PDFShenghui decoction inhibits neuronal cell apoptosis to improve Alzheimer's disease through the PDE4B/cAMP/CREB signaling pathway.
Phytomedicine
January 2025
Collaborative Innovation Center of Prevention and Treatment of Major Diseases by Chinese and Western Medicine, Henan Province, Henan University of Chinese Medicine, Zhengzhou 450046, Henan, China; Collaborative Innovation Center of Research and Development on the whole Industry Chain of Yu-Yao, Henan University of Chinese Medicine, Zhengzhou 450046, Henan, China. Electronic address:
Background: Shenghui Decoction (SHD) is a frequently utilized traditional Chinese medicine formula in clinical settings for addressing cognitive impairment in elderly individuals. Nevertheless, the precise mechanism by which SHD exerts its effects on the most prevalent form of dementia, Alzheimer's disease (AD), remains to be elucidated.
Methods: Temperature-induced transgenic C.
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!