In Vivo Methods to Study ThermoTRP Channels in Rodents

Sara González-Rodríguez1

  • 1Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández, Elche, Spain. sara.gonzalezr@umh.es.

Insights

Transient Receptor Potential (TRP) channels, particularly TRPV1, are key in pain sensation. This review details standard rodent nociception tests for evaluating new pain-relief compounds targeting these channels.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Physiology

Background:

  • Ion channels, especially the Transient Receptor Potential (TRP) family, play crucial roles in biological processes.
  • TRPV1 is the most studied TRP channel, implicated in pain sensation, thermonociception, and perception of stimuli like capsaicin.
  • Developing blockers for TRP channels is a growing area of interest for pain management.

Purpose of the Study:

  • To review standard, current, and available nociception tests in rodents.
  • To provide a resource for evaluating the efficacy of novel compounds targeting TRP channels for pain relief.

Main Methods:

  • Focus on rodent models for pain and nociception testing.
  • Description of methods specifically for thermal and mechanical stimuli application.
  • Exploration of established and current nociceptive assays.

Main Results:

  • Nociception tests in rodents are essential for assessing potential pain-relief drugs.
  • Standardized methods exist for evaluating thermal and mechanical hyperalgesia.
  • TRP channels are validated targets for therapeutic intervention in pain.

Conclusions:

  • Rodent nociception tests are critical for preclinical drug development targeting TRP channels.
  • Understanding these assays aids in the discovery of new analgesics.
  • TRPV1 and related channels represent significant targets for treating painful conditions.

Related Concept Videos

Ion Channels01:19

Ion Channels

The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
91.2K
Channel Rhodopsins01:11

Channel Rhodopsins

Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
3.2K
Non-gated Ion Channels01:24

Non-gated Ion Channels

Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism....
8.1K
Channels of Non-Verbal Communication01:28

Channels of Non-Verbal Communication

Non-verbal communication plays a critical role in human interaction, influencing how individuals perceive emotions and psychological states. It operates through four primary channels: facial expressions, eye contact, body language, and touch. These non-verbal cues help convey meaning beyond spoken language and are often culturally influenced.Facial Expressions and Emotional RecognitionFacial expressions are among the most powerful and universal forms of non-verbal communication. Research has...
398
Methods for Studying Drug Absorption: In vitro01:16

Methods for Studying Drug Absorption: In vitro

In vitro experiments are crucial for understanding the transport and absorption of drugs through biological materials. These studies employ varied methods such as the diffusion cell method, the everted sac technique, and the everted ring technique.
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
587
Methods for Studying Drug Absorption: In situ01:09

Methods for Studying Drug Absorption: In situ

In situ experiments, such as the Doluisio method and Single-Pass Perfusion technique, provide critical insights into drug uptake by simulating in vivo conditions for drug absorption.
The Doluisio method involves perfusing a prepared segment of a rat's small intestine with a solution of radiolabeled drug and a non-absorbable marker. This helps to differentiate between absorbed and non-absorbed drug concentrations. The intestinal segment is connected at both ends using tubing and syringes,...
651