{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T17:08:01Z","timestamp":1791479281811,"version":"4.3.4"},"reference-count":44,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2022,7,18]],"date-time":"2022-07-18T00:00:00Z","timestamp":1658102400000},"content-version":"am","delay-in-days":330,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#am"},{"start":{"date-parts":[[2021,8,22]],"date-time":"2021-08-22T00:00:00Z","timestamp":1629590400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100000923","name":"Australian Research Council","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000923","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clin Exp Pharma Physio"],"published-print":{"date-parts":[[2021,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>For patients with osteoarthritis (OA) of the knee, pain is the most debilitating symptom. Although it has been proposed that the chronic phase of the monoiodoacetate (MIA)\u2010induced rodent model of knee joint pain may be superior to other chronic or acute OA models for assessing the analgesic efficacy of novel molecules, relatively few pharmacological studies have been conducted in the chronic phase of this model. Hence, this study was designed to use pharmacological methods to characterize the chronic phase of the MIA\u2010induced rat model of knee joint OA pain. Rats received a single intraarticular injection of MIA at 2.5\u00a0mg or vehicle (saline) into the left (ipsilateral) knee joint. Pain behaviour was assessed by measuring paw withdrawal thresholds (PWTs) in the hindpaws pre\u2010MIA injection and twice\u2010weekly until study completion on day 42. Mechanical allodynia was fully developed in the ipsilateral hindpaws (PWTs \u22646\u00a0g) from day 7 and it persisted until day 42. MIA\u2010injected rats with PWTs \u22646\u00a0g in the ipsilateral hindpaws received single doses of one of four clinically available drugs that represent four distinct pharmacological classes, viz gabapentin, amitriptyline, meloxicam and morphine, according to a \u2018washout\u2019 protocol with at least 48\u00a0hours between successive doses. Gabapentin evoked dose\u2010dependent anti\u2010allodynia as did morphine whereas amitriptyline and meloxicam were inactive. Our findings are aligned with clinical data showing that gabapentin and morphine alleviated OA pain in the knee. The lack of efficacy of amitriptyline is consistent with the loss of descending diffuse noxious inhibitory controls reported by others in this model.<\/jats:p>","DOI":"10.1111\/1440-1681.13551","type":"journal-article","created":{"date-parts":[[2021,7,18]],"date-time":"2021-07-18T14:39:40Z","timestamp":1626619180000},"page":"1515-1522","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Pharmacological characterization of the chronic phase of the monoiodoacetate\u2010induced rat model of osteoarthritis pain in the knee joint"],"prefix":"10.1111","volume":"48","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7260-5832","authenticated-orcid":false,"given":"Felicity Y.","family":"Han","sequence":"first","affiliation":[{"name":"Faculty of Medicine School of Biomedical Sciences The University of Queensland Brisbane QLD Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9423-4542","authenticated-orcid":false,"given":"David A.","family":"Brockman","sequence":"additional","affiliation":[{"name":"Faculty of Medicine School of Biomedical Sciences The University of Queensland Brisbane QLD Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Janet R.","family":"Nicholson","sequence":"additional","affiliation":[{"name":"Boehringer Ingelheim Pharma GmbH &amp; Co. 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