Diazepam Dose-Response Study
Objective: Evaluate anxiolytic effects of diazepam pretreatment at multiple doses on conditioned fear behaviors and c-fos expression in rat brain
This is a Diazepam Dose-Response Study protocol using rat as the model organism. The procedure involves 4 procedural steps, 1 materials. Extracted from a 1995 paper published in Journal of Neuroscience.
Model and subjects
rat • Not specified • unknown • Not specified • Not specified
Study window
Estimated timing pending
Core workflow
Conditioning procedure • Diazepam pretreatment • Test session and behavioral observation
Primary readouts
- Frequency of crouching (freezing) behavior during test session
- Number of Fos-like immunoreactive neurons in brain regions
- Conditioned stress-induced c-fos expression across sampled brain structures
- Fear-induced c-fos expression in central nucleus of amygdala
Key equipment and reagents
Verified items
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Direct vendor links
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Protocol Steps
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Conditioning procedure
Rats received footshock in a specific environment to establish conditioned fear association
Note: This establishes the aversively conditioned contextual cues
View evidence from paper
“Exposure to the environment in which they had previously received footshock significantly increased the number of Fos-like immunoreactive neurons”
Diazepam pretreatment
Rats received diazepam at one of three doses prior to testing
Note: Three dose levels tested: 2.5, 5.0, or 10 mg/kg
View evidence from paper
“effects of pretreatment with the anxiolytic drug diazepam (2.5, 5.0, or 10 mg/kg) were evaluated”
Test session and behavioral observation
Rats were exposed to the conditioned environment and behaviors were recorded, specifically measuring frequency of crouching (freezing)
Note: Analysis of behaviors provided evidence that conditioning procedure was effective
View evidence from paper
“Analysis of the behaviors emitted by the rats during the test session provided strong evidence that the conditioning procedure was effective”
Brain tissue collection and c-fos immunostaining
Brain tissue was collected and processed for Fos-like immunoreactive neuron detection across approximately 60 brain structures
Note: Analysis mapped neural substrates of conditioned fear using c-fos expression as metabolic marker
View evidence from paper
“The synthesis of Fos, the protein product of the immediate early gene c-fos, was used to map metabolically some of the neural substrates of conditioned fear in the rat”