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Recent evidence suggests that histamine <jats:styled-content style=\"fixed-case\">H<jats:sub>4<\/jats:sub><\/jats:styled-content> receptors play a modulatory role in allergic inflammation. Here we report the effects of compound <jats:styled-content style=\"fixed-case\">JNJ<\/jats:styled-content> 7777120 (<jats:styled-content style=\"fixed-case\">JNJ<\/jats:styled-content>), a selective <jats:styled-content style=\"fixed-case\">H<jats:sub>4<\/jats:sub><\/jats:styled-content> receptor antagonist, on antigen\u2010induced airway inflammation, paying special attention to its effects on lipocortin\u20101 (<jats:styled-content style=\"fixed-case\">LC<\/jats:styled-content>\u20101\/annexin\u2010<jats:styled-content style=\"fixed-case\">A1<\/jats:styled-content>), a 37 <jats:styled-content style=\"fixed-case\">kDA<\/jats:styled-content> anti\u2010inflammatory protein that plays a key role in the production of inflammatory mediators.<\/jats:p><\/jats:sec><jats:sec><jats:title>Experimental Approach<\/jats:title><jats:p>Ovalbumin (<jats:styled-content style=\"fixed-case\">OA<\/jats:styled-content>)\u2010sensitized guinea pigs placed in a respiratory chamber were challenged with antigen. <jats:styled-content style=\"fixed-case\">JNJ<\/jats:styled-content> (5, 7.5 and 10\u2009mg\u00b7kg<jats:sup>\u22121<\/jats:sup>) was given i.p. for 4 days before antigen challenge. Respiratory parameters were recorded. Bronchoalveolar lavage (<jats:styled-content style=\"fixed-case\">BAL<\/jats:styled-content>) fluid was collected and lung specimens taken for further analyses 1\u2009h after antigen challenge. In <jats:styled-content style=\"fixed-case\">BAL<\/jats:styled-content> fluid, levels of <jats:styled-content style=\"fixed-case\">LC<\/jats:styled-content>\u20101, <jats:styled-content style=\"fixed-case\">PGD<jats:sub>2<\/jats:sub><\/jats:styled-content>, <jats:styled-content style=\"fixed-case\">LTB<jats:sub>4<\/jats:sub><\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">TNF\u2010\u03b1<\/jats:styled-content> were measured. In lung tissue samples, myeloperoxidase, caspase\u20103 and <jats:styled-content style=\"fixed-case\">M<\/jats:styled-content>n\u2010superoxide dismutase activities and 8\u2010hydroxy\u20102\u2010deoxyguanosine levels were measured.<\/jats:p><\/jats:sec><jats:sec><jats:title>Key Results<\/jats:title><jats:p><jats:styled-content style=\"fixed-case\">OA<\/jats:styled-content> challenge decreased <jats:styled-content style=\"fixed-case\">LC<\/jats:styled-content>\u20101 levels in <jats:styled-content style=\"fixed-case\">BAL<\/jats:styled-content> fluid, induced cough, dyspnoea and bronchoconstriction and increased <jats:styled-content style=\"fixed-case\">PGD<jats:sub>2<\/jats:sub><\/jats:styled-content>, <jats:styled-content style=\"fixed-case\">LTB<jats:sub>4<\/jats:sub><\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">TNF<\/jats:styled-content>\u2010\u03b1 levels in lung tissue. Treatment with <jats:styled-content style=\"fixed-case\">JNJ<\/jats:styled-content> dose\u2010dependently increased levels of <jats:styled-content style=\"fixed-case\">LC<\/jats:styled-content>\u20101, reduced respiratory abnormalities and lowered levels of <jats:styled-content style=\"fixed-case\">PGD<jats:sub>2<\/jats:sub><\/jats:styled-content>, <jats:styled-content style=\"fixed-case\">LTB<jats:sub>4<\/jats:sub><\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">TNF<\/jats:styled-content>\u2010\u03b1 in <jats:styled-content style=\"fixed-case\">BAL<\/jats:styled-content> fluid.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions and Implications<\/jats:title><jats:p>Antigen\u2010induced asthma\u2010like reactions in guinea pigs decreased levels of <jats:styled-content style=\"fixed-case\">LC<\/jats:styled-content>\u20101 and increased <jats:styled-content style=\"fixed-case\">TNF<\/jats:styled-content>\u2010\u03b1 and eicosanoid production. <jats:styled-content style=\"fixed-case\">JNJ<\/jats:styled-content> pretreatment reduced allergic asthmatic responses and airway inflammation, an effect associated with <jats:styled-content style=\"fixed-case\">LC<\/jats:styled-content>\u20101 up\u2010regulation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Linked Articles<\/jats:title><jats:p>This article is part of a themed issue on Histamine Pharmacology Update. To view the other articles in this issue visit <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"doi\" xlink:href=\"10.1111\/bph.2013.170.issue-1\">http:\/\/dx.doi.org\/\n10.1111\/bph.2013.170.issue\u20101<\/jats:ext-link><\/jats:p><\/jats:sec>","DOI":"10.1111\/bph.12264","type":"journal-article","created":{"date-parts":[[2013,6,4]],"date-time":"2013-06-04T12:55:32Z","timestamp":1370350532000},"page":"200-213","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":31,"title":["A selective antagonist of histamine <scp>H<sub>4<\/sub><\/scp> receptors prevents antigen\u2010induced airway inflammation and bronchoconstriction in guinea pigs: involvement of lipocortin\u20101"],"prefix":"10.1111","volume":"170","author":[{"given":"T","family":"Somma","sequence":"first","affiliation":[{"name":"Department of Preclinical and Clinical Pharmacology University of Florence  Florence Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L","family":"Cinci","sequence":"additional","affiliation":[{"name":"Department of Preclinical and Clinical Pharmacology University of Florence  Florence Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G","family":"Formicola","sequence":"additional","affiliation":[{"name":"Department of Preclinical and Clinical Pharmacology University of Florence  Florence Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A","family":"Pini","sequence":"additional","affiliation":[{"name":"Department of Preclinical and Clinical Pharmacology University of Florence  Florence Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R","family":"Thurmond","sequence":"additional","affiliation":[{"name":"Johnson &amp; Johnson Pharmaceutical Research &amp; Development L.L.C.  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