Drug-induced Plasticity
Drug-induced Plasticity - Related Videos
11:56
Slice Patch Clamp Technique for Analyzing Learning-Induced Plasticity
0 Views •
Cited by 20 •
2017
The slice patch clamp technique is an effective method for analyzing learning-induced changes in the intrinsic properties and plasticity of excitatory or inhibitory synapses.
11:02
Vagus Nerve Stimulation as a Tool to Induce Plasticity in Pathways Relevant for Extinction Learning
0 Views •
Cited by 45 •
2015
Vagus nerve stimulation (VNS) has emerged as a tool to induce targeted synaptic plasticity in the forebrain to modify a range of behaviors. This protocol describes how to implement VNS to facilitate the consolidation of fear extinction memory.
12:47
Inducing Plasticity of Astrocytic Receptors by Manipulation of Neuronal Firing Rates
0 Views •
Cited by 8 •
2014
Here we describe an adaptation of protocols used to induce homeostatic plasticity in neurons for the study of plasticity of astrocytic G protein-coupled receptors. Recently used to examine changes in astrocytic group I mGluRs in juvenile mice, the method can be applied to measure scaling of various astrocytic GPCRs, in tissue from adult mice in situ and in vivo, and to gain a better appreciation of the sensitivity of astrocytic receptors to changes in neuronal activity.
04:47
Zebrafish Cardiomyopathy Model: Drug-Induced Cardiotoxicity
0 Views •
2023
This video describes the technique of creating a zebrafish cardiomyopathy model with minimal variations among experimental groups and in the sample, we create zebrafish cardiomyopathy model using the drug doxorubicin.
00:58
Plasticity
0 Views •
2023
Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
FAQs
Intracellular signaling can translate drug exposure into longer-lasting cellular responses by changing downstream activity and gene transcription. Altered transcription may then modify receptor abundance, synaptic strength, or other cellular properties. This sequence helps explain why a drug’s effects can outlast its presence and why repeated exposure may produce responses that differ from the initial pharmacological action.
Brief exposure primarily reflects the drug’s immediate action, whereas repeated or sustained exposure gives cells more opportunity to adjust their function and structure. These adjustments can persist after the drug is cleared, creating a changed baseline response. The distinction is important when interpreting tolerance, dependence, sensitization, withdrawal, or differences in treatment response.
Key changes include modifications in synaptic strength, receptor abundance, intracellular signaling, and gene transcription. Structural alterations in neurons may accompany these functional changes, allowing drug exposure to influence how cells communicate and respond later. Examining several levels together provides a more complete account than measuring an immediate drug effect alone.
These outcomes reflect different consequences of lasting cellular adaptation to drug exposure. Adjustments in receptors, synaptic function, signaling, or transcription can reduce some responses, enhance others, or create dependence on continued drug presence. When exposure changes or stops, the altered cellular state may contribute to withdrawal and help explain persistent behavioral effects.
A useful framework begins by examining drug-related changes at molecular and cellular levels, including signaling, receptor abundance, synaptic strength, and gene transcription. Investigators can then relate those findings to behavioral or clinical outcomes and determine whether changes persist after drug clearance. This multilevel approach connects cellular mechanisms with consequences relevant to pharmacological treatment.
These studies can show how molecular and cellular adaptations correspond to altered behavior and clinical responses. They help place tolerance, dependence, sensitization, withdrawal, and variable treatment effects within a common mechanistic context. The resulting evidence can clarify why responses change over time and identify adaptations that may influence the success or limitations of therapy.
Understanding maladaptive adaptations can help guide therapies designed to reduce harmful long-term cellular changes while preserving beneficial drug effects. This goal links mechanistic findings to treatment design rather than focusing only on immediate efficacy. In pharmacology, such knowledge may support strategies that account for persistent adaptations and improve responses that vary among treatment conditions.