Rodent Pain Model
Rodent Pain Model - Related Videos
02:26
Intracranial Pharmacotherapy and Pain Assays in Rodents
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2019
Here we present a protocol to perform intracranial pharmacological experiments followed by pain behavior assays in rodents. This protocol allows researchers to deliver molecular and cellular targets in the brain, for pharmacologic agents in the treatment of pain.
09:26
The Monoiodoacetate Model of Osteoarthritis Pain in the Mouse
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Cited by 190 •
2016
Osteoarthritis (OA), or degenerative joint disease, is a debilitating condition associated with pain that remains only partially controlled by available analgesics. Animal models are being developed to improve our understanding of OA-related pain mechanisms. Here we describe the methodology for the monoiodoacetate model of OA pain in the mouse.
10:29
Principles of Rodent Surgery for the New Surgeon
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Cited by 55 •
2011
Before attempting surgery, a new surgeon should have training in basic surgical techniques and concepts. This article will present basic surgical considerations with an emphasis on rodents.
09:00
Quantifying Pain Location and Intensity with Multimodal Pain Body Diagrams
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Cited by 4 •
2023
Current pain scales used to quantify pain severity, such as visual analog scales, fail to capture the complexity of subjective pain experiences. Pain body diagrams are qualitative but may be more informative. The goal of this method is to extract quantitative metrics from pain body diagrams using novel pressure-hue transformation.
01:37
A Preterm Rat Model for Pain Studies
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2024
Here, we present a concise protocol for creating a preterm rat model, facilitating research on early postnatal pain management. The method involves performing a cesarean section three days before the expected birth, extracting preterm rat pups via hysterectomy, and integrating them with the biological offspring of a surrogate dam.
FAQs
The stimulus determines which behavioral response is recorded and how sensitivity is characterized. Mechanical testing can be paired with paw withdrawal, whereas thermal or chemical challenges may be evaluated through withdrawal, licking, guarding, or changes in movement. Comparing these readouts helps researchers examine pain-related behavior under controlled conditions without treating every response as an identical measure.
These behaviors represent distinct observable indicators of altered nociception or pain sensitivity. Withdrawal can indicate a response to a specific stimulus, while licking or guarding may reflect protective behavior. Reduced movement provides a broader behavioral outcome. Recording the selected endpoint consistently is important because each measure captures a different aspect of the animal’s response.
The pain state depends on the stimulus and the overall experimental design rather than on the animal species alone. Designs can represent acute, inflammatory, or neuropathic conditions, allowing investigators to study different patterns of altered sensory responses. Selecting a model that matches the research question supports more relevant interpretation of behavioral changes and treatment effects.
Reproducibility depends on applying controlled stimuli, using consistent behavioral measurements, and maintaining standardized procedures. Clear selection of endpoints such as withdrawal, licking, guarding, or movement helps reduce variation in interpretation. Ethical monitoring also matters because changes in welfare can affect behavior, while consistent oversight supports both reliable data and responsible experimentation.
A typical evaluation selects a pain state and an appropriate mechanical, thermal, or chemical stimulus, then applies that stimulus under controlled conditions. Researchers record predefined behaviors, including withdrawal, licking, guarding, or reduced movement, and compare the resulting responses across experimental conditions. Ethical monitoring accompanies the procedure to support animal welfare and consistent observations.
Researchers choose these models when they need to examine pain-related behavior, characterize pain pathways, or determine how injury or disease changes sensory responses. They are also useful for evaluating analgesic efficacy by comparing behavioral outcomes after treatment. The model and stimulus should fit the intended pain state and the specific behavioral question.
Behavioral measurements provide observable outcomes for assessing whether a treatment changes nociception or pain sensitivity. By combining controlled stimulation with endpoints such as withdrawal, licking, guarding, or movement, investigators can evaluate analgesic efficacy and study altered responses associated with injury or disease. These findings support behavioral characterization of pain pathways within a defined experimental design.