Deficit in long-term contextual fear memory induced by blockade of beta-adrenoceptors in hippocampal CA1 region.

Eur J Neurosci

Laboratory of Higher Brain Functions, Institute of Neurobiology, Fudan University, Shanghai 200433, The People's Republic of China.

Published: May 2003


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

The present study investigated the effects of intra-CA1 infusion of d,l-propranolol, the beta-adrenergic antagonist, on memory for contextual fear conditioning. d,l-Propranolol administered 5 min ('0 h') postconditioning impaired long-term but not short-term contextual fear memory, while it was ineffective when administered 6 h postconditioning, suggesting that there is a time window for beta-adrenoceptors to play a role. Thus, we conclude that beta-adrenoceptors in area CA1 are involved in regulating consolidation of contextual fear memory, with '0 h' but not 6 h post-training, a sensitive time point for the beta-adrenergic involvement.

Download full-text PDF

Source
http://dx.doi.org/10.1046/j.1460-9568.2003.02620.xDOI Listing

Publication Analysis

Top Keywords

contextual fear
16
fear memory
12
deficit long-term
4
contextual
4
long-term contextual
4
fear
4
memory
4
memory induced
4
induced blockade
4
blockade beta-adrenoceptors
4

Similar Publications

Introduction: Speaking up about medical errors is a critical behaviour for medical students, as it plays a vital role in enhancing patient safety. Few studies have explored the drivers and barriers affecting their willingness to speak up in clinical training, particularly within hierarchical Asian cultures. The purpose of this study was to explore drivers and barriers shaping medical students' speaking up behaviours about medical errors to inform education, mentorship and patient safety practices.

View Article and Find Full Text PDF

Background: Little is documented on key community-based One Health (OH) approach implementation, pro-activeness and effectiveness of interactions and strategies against Mpox outbreak public health emergency in international concern (PHEIC) in various African countries in order to stamp out the persisting Mpox outbreak threat and burden. Prioritizing critical community-based interventions and lessons learned from previous COVID-19, Mpox, Ebola, COVID-19, Rift Valley Fever and Marburg virus outbreaks revealed critical shortcomings in funding, surveillance, and community engagement that plague public health initiatives across the continent. The article provides critical insights and benefits of community-based One Health approaches implementation against Mpox outbreak management in Africa.

View Article and Find Full Text PDF

Social Buffering of Acute Early Life Stress Sex-Dependently Ameliorates Fear Incubation in Adulthood.

Dev Psychobiol

September 2025

Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, Ohio, USA.

Social buffering may reduce the persistent impacts of acute early life stress (aELS) and, thus, has important implications for anxiety- and trauma-related disorders. First, we assessed whether aELS would induce maladaptive fear incubation in adult mice, a PTSD-like phenotype. Overall, animals showed incubation of fear memory in adulthood, independent of aELS condition.

View Article and Find Full Text PDF

Objectives: The main objective of this study was to explore and describe perceived risk of women towards Human Papillomavirus (HPV) infection and cervical cancer (CC) in Adama, Ethiopia. Perception of women towards CC screening was also investigated.

Design: A qualitative exploratory, descriptive and contextual research design was employed.

View Article and Find Full Text PDF

Study Objectives: Brief sleep loss alters cognition and the activity and synaptic structures of both principal neurons and interneurons in hippocampus. However, although sleep-dependent coordination of activity between hippocampus and neocortex is essential for memory consolidation, much less is known about how sleep loss affects neocortical input to hippocampus, or excitatory-inhibitory balance within neocortical structures. We aimed to test how the synaptic structures of SST+ interneurons in lateral and medial entorhinal cortex (LEC and MEC), which are the major neocortical input to hippocampus, are affected by brief sleep disruption in the hours following learning.

View Article and Find Full Text PDF