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Related Concept Videos

Pain01:20

Pain

1.1K
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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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

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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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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Blood and Nerve Supply to the Bones01:29

Blood and Nerve Supply to the Bones

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Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
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Sensory Functions of the Skin01:16

Sensory Functions of the Skin

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The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
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Related Experiment Video

Updated: Dec 22, 2025

Determining heat and mechanical pain threshold in inflamed skin of human subjects
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Determining heat and mechanical pain threshold in inflamed skin of human subjects

Published on: January 14, 2009

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Getting in Touch with Mechanical Pain Mechanisms.

Rose Z Hill1, Diana M Bautista2

  • 1Department of Molecular and Cell Biology, UC Berkeley, Berkeley, CA 94703, USA.

Trends in Neurosciences
|May 1, 2020
PubMed
Summary

Researchers are uncovering how the body detects painful mechanical forces. New studies identify specific pain neurons and modulators, advancing our understanding of noxious mechanosensation.

Keywords:
DRG neuronmechanical painmechanonociceptornociceptionperipheral nervous systemsomatosensory

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Related Experiment Videos

Last Updated: Dec 22, 2025

Determining heat and mechanical pain threshold in inflamed skin of human subjects
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Area of Science:

  • Neurobiology
  • Somatosensory System
  • Mechanobiology

Background:

  • Mammals possess diverse sensory modalities via the peripheral somatosensory system.
  • While many sensory transduction mechanisms are known, the detection of acute mechanical pain by somatosensory neurons remains poorly understood.
  • This knowledge gap represents a significant challenge in sensory neurobiology.

Purpose of the Study:

  • To review recent advancements in understanding noxious mechanosensation.
  • To highlight novel findings in the identification of mechanical pain neurons and their modulators.
  • To introduce new behavioral methodologies for assessing mechanical pain.

Main Methods:

  • Review of recent scientific literature on noxious mechanosensation.
  • Identification and characterization of specific somatosensory neuron subpopulations involved in mechanical pain.
  • Exploration of novel molecular modulators influencing mechanical pain pathways.
  • Development and application of new behavioral assays for mechanical pain assessment.

Main Results:

  • Recent studies have successfully identified distinct subpopulations of mechanical pain neurons.
  • Novel modulators of mechanical pain have been discovered, offering new insights into pain signaling.
  • Progress has been made in understanding the cellular and molecular basis of noxious mechanotransduction.
  • New behavioral methods provide enhanced tools for quantifying mechanical pain responses.

Conclusions:

  • Significant progress has been achieved in elucidating the mechanisms of noxious mechanosensation.
  • The identification of specific neurons and modulators opens avenues for therapeutic interventions.
  • Continued research and the use of advanced behavioral methods are crucial for further understanding mechanical pain.