{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T17:20:56Z","timestamp":1782494456682,"version":"3.54.5"},"reference-count":56,"publisher":"American Physiological Society","issue":"11","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American Journal of Physiology-Gastrointestinal and Liver Physiology"],"published-print":{"date-parts":[[2013,6,1]]},"abstract":"<jats:p>Chronic pancreatitis (CP) is a devastating disease characterized by persistent and uncontrolled abdominal pain. Our lack of understanding is partially due to the lack of experimental models that mimic the human disease and also to the lack of validated behavioral measures of visceral pain. The ligand-gated cation channel transient receptor potential ankyrin 1 (TRPA1) mediates inflammation and pain in early experimental pancreatitis. It is unknown if TRPA1 causes fibrosis and sustained pancreatic pain. We induced CP by injecting the chemical agent trinitrobenzene sulfonic acid (TNBS), which causes severe acute pancreatitis, into the pancreatic duct of C57BL\/6 trpa1<jats:sup>+\/+<\/jats:sup>and trpa1<jats:sup>-\/-<\/jats:sup>mice. Chronic inflammatory changes and pain behaviors were assessed after 2\u20133 wk. TNBS injection caused marked pancreatic fibrosis with increased collagen-staining intensity, atrophy, fatty replacement, monocyte infiltration, and pancreatic stellate cell activation, and these changes were reflected by increased histological damage scores. TNBS-injected animals showed mechanical hypersensitivity during von Frey filament probing of the abdomen, decreased daily voluntary wheel-running activity, and increased immobility scores during open-field testing. Pancreatic TNBS also reduced the threshold to hindpaw withdrawal to von Frey filament probing, suggesting central sensitization. Inflammatory changes and pain indexes were significantly reduced in trpa1<jats:sup>-\/-<\/jats:sup>mice. In conclusion, we have characterized in mice a model of CP that resembles the human condition, with marked histological changes and behavioral measures of pain. We have demonstrated, using novel and objective pain measurements, that TRPA1 mediates inflammation and visceral hypersensitivity in CP and could be a therapeutic target for the treatment of sustained inflammatory abdominal pain.<\/jats:p>","DOI":"10.1152\/ajpgi.00005.2013","type":"journal-article","created":{"date-parts":[[2013,4,5]],"date-time":"2013-04-05T02:43:44Z","timestamp":1365129824000},"page":"G1002-G1012","source":"Crossref","is-referenced-by-count":42,"title":["Transient receptor potential ankyrin 1 mediates chronic pancreatitis pain in mice"],"prefix":"10.1152","volume":"304","author":[{"given":"Fiore","family":"Cattaruzza","sequence":"first","affiliation":[{"name":"Department of Surgery, University of California, San Francisco, California;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cali","family":"Johnson","sequence":"additional","affiliation":[{"name":"Department of Surgery, University of California, San Francisco, California;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alan","family":"Leggit","sequence":"additional","affiliation":[{"name":"Department of Neuroscience, University of California, San Francisco, California;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eileen","family":"Grady","sequence":"additional","affiliation":[{"name":"Department of Surgery, University of California, San Francisco, California;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. 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