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Canonical Wnt Signaling Pathway

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The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which...
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Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
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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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Pain01:20

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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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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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Overview of Somatic Sensory Pathways01:29

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Somatic sensory or somatosensory pathways refer to the neural pathways that carry information related to touch, pressure, pain, temperature, and proprioception from the skin, muscles, tendons, and joints to the brain. These pathways involve several stages of processing and integration of sensory information.
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Related Experiment Video

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Author Spotlight: Exploring the Initiation Mechanism of 'Three-Method and Three-Acupoint' Tuina Analgesia in Rats with Nerve Injury
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Wnt Signaling Pathways: A Role in Pain Processing.

Yiting Tang1,2, Yupeng Chen1,2, Rui Liu3

  • 1Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beixiange 5, Xicheng District, Beijing, 100053, China.

Neuromolecular Medicine
|January 24, 2022
PubMed
Summary
This summary is machine-generated.

The wingless-related integration site (Wnt) signaling pathway is crucial for nervous system regulation and is involved in various neuropathic pain conditions. Targeting Wnt signaling presents a potential therapeutic strategy for managing neuropathic pain.

Keywords:
Cancer painDiabetic neuralgiaNeuropathic painPain processingWNT signaling

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Pain Research

Background:

  • The wingless-related integration site (Wnt) signaling pathway is fundamental for embryonic development and nervous system regulation.
  • Neuropathic pain (NP) encompasses diverse conditions including HIV-related NP, cancer pain, diabetic neuralgia, and pain associated with multiple sclerosis and endometriosis.

Purpose of the Study:

  • To investigate the role of the Wnt signaling pathway in various forms of neuropathic pain.
  • To evaluate the potential of Wnt signaling as a therapeutic target for NP.

Main Methods:

  • Literature review and analysis of existing studies on Wnt signaling in pain.
  • Examination of Wnt pathway involvement in experimentally induced neuropathic pain models, such as sciatic nerve compression and spinal nerve ligation.

Main Results:

  • Wnt signaling is implicated in the pathophysiology of multiple neuropathic pain conditions.
  • Evidence suggests Wnt pathway activation in response to nerve injury models.

Conclusions:

  • The Wnt signaling pathway is a significant factor in the development and maintenance of neuropathic pain.
  • Modulating Wnt signaling may offer a novel therapeutic approach for treating neuropathic pain and related disorders.