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Related Concept Videos

Analgesia and Pain Management01:25

Analgesia and Pain Management

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Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
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Pain01:20

Pain

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Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
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Non-gated Ion Channels01:24

Non-gated Ion Channels

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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....
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Nociception01:44

Nociception

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Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
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Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

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Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
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Neurochemical Transmission: Sites of Drug Action01:26

Neurochemical Transmission: Sites of Drug Action

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Neurochemical transmission, the conduction of electrical impulses between neurons mediated by neurotransmitters, plays a vital role in various physiological processes. Autonomic drugs exert their effects by modulating neurotransmission within the autonomic nervous system. For instance, drugs such as hemicholinium block the precursor uptake necessary for synthesizing acetylcholine, an essential autonomic neurotransmitter. Following synthesis, neurotransmitters are stored in vesicles. Metyrosine...
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Related Experiment Video

Updated: Mar 21, 2026

Optimizing Photoneuromodulation Techniques to Evaluate the Role of Green Light-Emitting Diodes in Pain Management
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Pain transduction: a pharmacologic perspective.

Dan M McEntire1, Daniel R Kirkpatrick1, Nicholas P Dueck1

  • 1a Department of Clinical and Translational Science and Department of Anesthesiology , Creighton University School of Medicine , Omaha , NE , USA.

Expert Review of Clinical Pharmacology
|May 4, 2016
PubMed
Summary
This summary is machine-generated.

Understanding pain requires studying ion channels like ASICs, TRP, and Nav channels. While some channels show therapeutic potential, further research is needed for effective pain relief strategies.

Keywords:
Analgesiaacid-sensing ion channelsanesthesianociceptive transductionpainvoltage-gated sodium channels

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Pain Research

Background:

  • Pain is a critical physiological process and a major pathological concern globally.
  • Nociceptive stimulus transduction involves ion channels converting noxious stimuli into neurological signals.

Purpose of the Study:

  • To critically evaluate research on the physiology and pharmacology of key ion channels involved in pain transduction.
  • To review acid-sensing ion channels (ASICs), transient receptor potential (TRP) cation channels, and voltage-gated sodium (Nav) channels in the context of pain.

Main Methods:

  • Review article synthesizing findings on ion channel physiology and analgesic pharmacology.
  • Critical evaluation of research on ASICs, TRP channels (TRPV1, TRPA1, TRPV3, TRPM8), and Nav channels.

Main Results:

  • ASIC physiology in nociception is not fully understood, and clinical utility of interacting medications is unproven.
  • Direct TRPV1 antagonism has side effects, but research continues; TRPA1, TRPV3, and TRPM8 warrant further investigation.
  • Local anesthetics have dose limitations due to systemic effects, but selective Nav antagonists show promise without systemic risks.

Conclusions:

  • Significant progress in pain transduction research exists, yet many questions remain.
  • Targeting specific ion channels like ASICs and TRP channels offers potential for novel pain therapies.
  • Development of selective Nav antagonists represents a promising advancement in pain management.