Related Experiment Video
Updated: Jun 9, 2026
07:09
The Sciatic Nerve Cuffing Model of Neuropathic Pain in Mice
Published on: July 16, 2014
Nicotinic acetylcholine receptors in pain modulation
Junya Cheng1, Junliang Chang1, Shuai Li1
1Changchun Institute of Biological Products Co., Ltd., Changchun, China.
Frontiers in Pharmacology
|June 8, 2026
Summary
Nicotinic acetylcholine receptors (nAChRs) show promise for new pain relief. Targeting specific nAChR subtypes may offer safer, effective non-opioid analgesics for chronic pain conditions.
Area of Science:
- Neuroscience
- Pharmacology
- Pain Research
Background:
- Chronic pain affects 20% of adults, causing significant burden.
- Current treatments (NSAIDs, opioids) have limitations like poor efficacy and addiction risks.
- Novel non-opioid analgesics are needed for conditions like neuropathic pain.
Purpose of the Study:
- To review the role of nicotinic acetylcholine receptors (nAChRs) in pain regulation.
- To explore specific nAChR subtypes involved in different pain types.
- To discuss therapeutic strategies targeting nAChRs for pain management.
Main Methods:
- Literature review of studies on nAChRs and pain.
- Analysis of research on nAChR subunit combinations and their functions.
- Examination of selective compounds like α-conotoxins.
Main Results:
- Specific nAChR subtypes (e.g., α3β4, α4β2, α7) are implicated in inflammatory, neuropathic, and cancer pain.
- nAChRs modulate pain signaling, neuroinflammation, and immune-neural interactions.
- Selective compounds show potential for nAChR-targeted analgesia.
Conclusions:
- nAChRs are promising targets for developing novel, non-opioid analgesics.
- Understanding subtype-specific roles is crucial for effective therapeutic development.
- Further research and clinical translation are needed for nAChR-based pain therapies.
Related Concept Videos
01:15Cholinergic Receptors: Nicotinic
Nicotinic receptors are ligand-gated ion channels that are activated by acetylcholine and nicotine. Upon activation, they cause a rapid increase in the permeability of cells to K+, Na+, and Ca2+, followed by depolarization and excitation. They are in the autonomic ganglia, skeletal neuromuscular junction, CNS, and adrenal medulla.
There are two types of nicotinic receptors: neuromuscular (NM/NM/N1) and neuronal (NN/NN/N2). The two families differ based on their location and selectivity to...
There are two types of nicotinic receptors: neuromuscular (NM/NM/N1) and neuronal (NN/NN/N2). The two families differ based on their location and selectivity to...
01:25Cholinergic Receptors: Muscarinic
The pharmacological actions of acetylcholine are elicited via its binding to two families of cholinergic receptors or cholinoceptors, namely, muscarinic and nicotinic receptors. Muscarinic receptors are G protein-coupled receptors and have five subtypes, M1–M5. All mAChR subtypes are activated by acetylcholine and blocked by the antagonist, atropine.
The subtypes M1, M3, and M5 couple with the Gq subunit and activate the phospholipase C (PLC) activity, mobilizing intracellular Ca2+. Activation...
The subtypes M1, M3, and M5 couple with the Gq subunit and activate the phospholipase C (PLC) activity, mobilizing intracellular Ca2+. Activation...
01:25Analgesia and Pain Management
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...
01:44Nociception
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. Thus, pain helps the...
01:30Parasympathetic Signaling
Parasympathetic signaling plays a crucial role in regulating various physiological processes. It involves the release of acetylcholine (ACh) by parasympathetic neurons, which can have localized and short-lived effects. The majority of ACh released is rapidly inactivated at the synapse by the enzyme acetylcholinesterase (AChE), which hydrolyzes Ach into choline and acetate. Additionally, the tissue cholinesterase deactivates any ACh diffusing into the surrounding tissues.
The effects of...
The effects of...
01:20Pain
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...