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Related Concept Videos

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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Analgesia and Pain Management01:25

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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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Opioid Receptors: Overview01:22

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Opioid receptors, including the mu (μ, MOR), delta (δ, DOR), and kappa (κ, KOR) types, belong to the rhodopsin family of G protein-coupled receptors. These receptors are located throughout the central and peripheral nervous systems and in non-neuronal tissues such as macrophages and astrocytes. Opioid receptor ligands can be categorized into agonists or antagonists. Highly selective agonists include [d-Ala2, MePhe4, Gly(ol)5]-enkephalin or DAMGO for MOR, [D-Pen2,...
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Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

Ligand-Gated Ion Channel Receptor: Gating Mechanism

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Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
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Neural Regulation of Blood Pressure01:18

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The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
Baroreceptor Reflex
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Related Experiment Video

Updated: Mar 26, 2026

Optimizing Photoneuromodulation Techniques to Evaluate the Role of Green Light-Emitting Diodes in Pain Management
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Gain control mechanisms in the nociceptive system.

Rolf-Detlef Treede1

  • 1Chair of Neurophysiology, Centre for Biomedicine and Medical Technology Mannheim, Heidelberg University, Mannheim, Germany.

Pain
|January 29, 2016
PubMed
Summary

The gate control theory of pain advanced pain management, leading to effective treatments like nerve stimulation. Understanding pain gain control mechanisms aids personalized, mechanism-based pain therapy strategies.

Area of Science:

  • Neuroscience
  • Pain Research
  • Clinical Medicine

Background:

  • The 1965 gate control theory of pain integrated clinical observations and spinal cord circuitry into a testable model.
  • While spinal circuitry is more complex than initially proposed, the theory's predictions on nerve stimulation efficacy remain clinically relevant.
  • Current understanding recognizes that nociceptive system sensitivity can be modulated (gain control) at peripheral, spinal, and supraspinal levels.

Purpose of the Study:

  • To review the evidence base for mechanism-based pain treatment strategies.
  • To highlight the importance of profiling spatio-temporal characteristics of altered pain sensitivity for diagnosis.
  • To propose the integration of patient stratification into multimodal pain therapy algorithms.

Main Methods:

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  • Review of current evidence on pain sensitivity modulation.
  • Analysis of spatio-temporal profiling of evoked pain.
  • Discussion of implications for diagnostic hypothesis generation and treatment stratification.

Main Results:

  • Altered pain sensitivity can be rapidly reversible or persistent, localized or widespread.
  • Profiling pain sensitivity aids in identifying underlying mechanisms like sensitization or inhibition.
  • The diagnostic process benefits from hypothesis generation based on pain profiles.

Conclusions:

  • Mechanism-based treatment of pain requires hypothesis generation through diagnostic profiling.
  • Multimodal pain therapy algorithms need a rational basis through profile-based patient stratification.
  • Further studies are needed to establish the efficacy of stratified pharmacological and non-pharmacological treatments.