{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T20:35:38Z","timestamp":1773779738601,"version":"3.50.1"},"reference-count":5,"publisher":"Elsevier BV","issue":"6","license":[{"start":{"date-parts":[[2021,11,1]],"date-time":"2021-11-01T00:00:00Z","timestamp":1635724800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2021,11,1]],"date-time":"2021-11-01T00:00:00Z","timestamp":1635724800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2021,2,3]],"date-time":"2021-02-03T00:00:00Z","timestamp":1612310400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Brazilian Journal of Anesthesiology (English Edition)"],"published-print":{"date-parts":[[2021,11]]},"DOI":"10.1016\/j.bjane.2020.12.016","type":"journal-article","created":{"date-parts":[[2021,2,4]],"date-time":"2021-02-04T20:22:49Z","timestamp":1612470169000},"page":"660-663","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":2,"title":["Effects of allopurinol on pain and anxiety in fibromyalgia patients: a pilot study"],"prefix":"10.1016","volume":"71","author":[{"given":"A\u00e9cio C.","family":"Fagundes","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Diogo O.","family":"Souza","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5425-2180","authenticated-orcid":false,"given":"Andr\u00e9 P.","family":"Schmidt","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.bjane.2020.12.016_bib0005","doi-asserted-by":"crossref","first-page":"115","DOI":"10.1177\/1759720X17699199","article-title":"Controversies and challenges in fibromyalgia: a review and a proposal","volume":"9","author":"Cohen","year":"2017","journal-title":"Ther Adv Musculoskelet Dis"},{"key":"10.1016\/j.bjane.2020.12.016_bib0010","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1016\/S0301-0082(03)00050-9","article-title":"Adenosine in the spinal cord and periphery: release and regulation of pain","volume":"69","author":"Sawynok","year":"2003","journal-title":"Prog Neurobiol"},{"key":"10.1016\/j.bjane.2020.12.016_bib0015","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1111\/j.1476-5381.2008.00025.x","article-title":"Anti-nociceptive properties of the xanthine oxidase inhibitor allopurinol in mice: role of A1 adenosine receptors","volume":"156","author":"Schmidt","year":"2009","journal-title":"Br J Pharmacol"},{"key":"10.1016\/j.bjane.2020.12.016_bib0020","doi-asserted-by":"crossref","first-page":"720","DOI":"10.1046\/j.1365-2044.2001.01842.x","article-title":"Risk factors for postoperative anxiety in adults","volume":"56","author":"Caumo","year":"2001","journal-title":"Anaesthesia"},{"key":"10.1016\/j.bjane.2020.12.016_bib0025","doi-asserted-by":"crossref","first-page":"401","DOI":"10.1016\/j.pharmthera.2007.07.004","article-title":"Proposal of a guanine-based purinergic system in the mammalian central nervous system","volume":"116","author":"Schmidt","year":"2007","journal-title":"Pharmacol Ther"}],"container-title":["Brazilian Journal of Anesthesiology (English Edition)"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S010400142100021X?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S010400142100021X?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T17:21:39Z","timestamp":1773768099000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S010400142100021X"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,11]]},"references-count":5,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2021,11]]}},"alternative-id":["S010400142100021X"],"URL":"https:\/\/doi.org\/10.1016\/j.bjane.2020.12.016","relation":{},"ISSN":["0104-0014"],"issn-type":[{"value":"0104-0014","type":"print"}],"subject":[],"published":{"date-parts":[[2021,11]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Effects of allopurinol on pain and anxiety in fibromyalgia patients: a pilot study","name":"articletitle","label":"Article Title"},{"value":"Brazilian Journal of Anesthesiology (English Edition)","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.bjane.2020.12.016","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2021 Sociedade Brasileira de Anestesiologia. Published by Elsevier Editora Ltda.","name":"copyright","label":"Copyright"}]}}