ArticleJournal of pain research2026
Wrist-Ankle Acupuncture Alleviates Paclitaxel-Induced Neuropathic Pain in Mice by Neuronal α7 Nicotinic Acetylcholine Receptor-Dependent Modulation of Spinal Glutamatergic/NMDAR Signaling.
Article in Journal of pain research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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6 authors.
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Abstract
Background: Chemotherapy-induced peripheral neuropathy (CIPN) remains a major clinical challenge because effective mechanism-based therapies are limited. Wrist-ankle acupuncture (WAA) has shown analgesic benefits in CIPN, but the spinal mechanisms underlying its effects remain largely unclear. Methods: Mechanical allodynia and thermal hyperalgesia were evaluated in a paclitaxel-induced CIPN mouse model. The cellular distribution of the α7 nicotinic acetylcholine receptor (α7nAChR) in the spinal dorsal horn was examined by immunofluorescence co-staining with NeuN-positive neurons. Spinal dorsal horn glutamate content and glutamatergic/N-methyl-D-aspartate receptor (NMDAR)-related signaling readouts (NMDAR NR2B subunit [NR2B], vesicular glutamate transporter 2 [VGluT2], phosphorylated c-Jun N-terminal kinase [p-JNK], phosphorylated cAMP response element-binding protein [p-CREB], and calcitonin gene-related peptide [CGRP]) were quantified using biochemical assays and Western blotting. To interrogate mechanism, an NMDAR agonist was administered intrathecally in a subset of mice prior to WAA. In parallel, neuronal α7nAChR was conditionally ablated via Cre-LoxP gene editing by delivering rAAV-hSyn-Cre into the lumbar dorsal horn of Results: WAA significantly attenuated mechanical allodynia and thermal hyperalgesia in CIPN mice. These behavioral improvements were accompanied by reduced dorsal horn glutamate levels and decreased NR2B/VGluT2-related measures and downstream markers (p-JNK, p-CREB, and CGRP), consistent with dampened glutamatergic/NMDAR pathway activity. Notably, intrathecal NMDAR activation or conditional loss of α7nAChR markedly blunted both the analgesic effect of WAA and its associated spinal molecular changes. Conclusion: WAA alleviates paclitaxel-induced neuropathic pain in an α7nAChR-dependent manner, at least in part through modulation of spinal glutamatergic/NMDAR-related signaling.
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