ArticleWorld journal of gastroenterology2025
NMDAR2B/PKA/CREB signaling pathway contributes to esophageal neuropathic pain in gastroesophageal reflux disease.
Article in World journal of gastroenterology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundEsophageal hypersensitivity is an important cause of refractory gastroesophageal reflux disease, in which patients do not respond to standard acid-suppressive therapy and suffer from continuous noncardiac chest pain and regurgitation. The N-methyl-D-aspartate receptor (NMDAR) may play a crucial role in the development of visceral hypersensitivity in functional gastrointestinal disorders. However, the specific mechanisms of visceral hypersensitivity in upper digestive tract diseases remain poorly understood.
aimTo investigate the role of the NMDAR2B/protein kinase A (PKA)/cAMP-response element binding protein (CREB) signaling pathway in the development of esophageal neuropathic pain associated with gastroesophageal reflux disease (GERD).
methodsThirty-six 6-week-old specific pathogen free rats were randomly assigned to six groups: the control, model, model + NMDAR agonist, model + NMDAR antagonist, model + PKA antagonist, and model + NMDAR antagonist + PKA agonist groups, with six rats in each group. The model was induced
resultsCompared with the control group, the model group presented significantly increased expression levels of the NMDAR2B, PKA, CREB, BDNF, substance P, and calcitonin gene-related peptide proteins and mRNAs in the cingulate gyrus, dorsal thalamus, spinal dorsal horn, and lower esophagus (
conclusionThe NMDAR2B signaling pathway plays a critical role in the development of neuropathic pain in GERD through the PKA/CREB/BDNF pathway.
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