Related Experiment Video
Updated: Jun 19, 2026
07:17
Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
Published on: June 23, 2022
Neuropeptides in learning and memory processes with focus on galanin
Sven Ove Ogren1, Eugenia Kuteeva, Elin Elvander-Tottie
1Department of Neuroscience, Karolinska Institutet, 171 77 Stockholm, Sweden. Sven.Ove.Ogren@ki.se
European Journal of Pharmacology
|October 20, 2009
Summary
Neuropeptides, crucial signaling molecules, modulate learning and memory in the brain. Targeting neuropeptide receptors offers new therapeutic avenues for cognitive disorders.
Area of Science:
- Neuroscience
- Molecular Biology
- Cognitive Science
Background:
- Neuropeptides are abundant signaling molecules in the central nervous system.
- They play diverse roles, including neurotransmission, neuromodulation, and hormonal functions.
- Evidence links neuropeptides to cognitive functions like learning and memory.
Purpose of the Study:
- To review the role of specific neuropeptides in hippocampal cognition.
- To explore how neuropeptides modulate learning, memory, and plasticity.
- To discuss the implications for neurodegenerative and neuropsychiatric disorders.
Main Methods:
- Review of existing literature on neuropeptides and cognition.
- Focus on dynorphins, nociceptin, and galanin in rodent models.
- Analysis of human studies on neuropeptide dysregulation and cognitive impairment.
Main Results:
- Dynorphins, nociceptin, and galanin significantly impact hippocampal learning and memory.
- These neuropeptides are crucial for hippocampal plasticity.
- Dysregulation is implicated in cognitive deficits in neurodegenerative and neuropsychiatric diseases.
Conclusions:
- Neuropeptides are key modulators of hippocampal cognitive functions.
- Targeting neuropeptide receptors presents a promising therapeutic strategy for cognitive impairments.
- Further research into neuropeptide systems could yield novel treatments for brain disorders.
More Related Videos
Related Concept Videos
01:23Role of Neurotransmitters in Memory
Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is critical for...
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is critical for...
01:09Synaptic Signaling
Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
The presynaptic neuron fires an action potential that...
Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
The presynaptic neuron fires an action potential that...
01:35Long-term Potentiation
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
01:25Long-term Potentiation
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when presynaptic neurons...
Hebbian LTP
LTP can occur when presynaptic neurons...
01:30Regulation of Food Intake
Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
01:31Neurotransmitters
Neurotransmitters are essential chemical messengers within the nervous system, facilitating the communication between neurons. These chemical messengers, varying in function and effect, are critical for sustaining various aspects of neurological health and emotional well-being.