{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T11:38:05Z","timestamp":1783337885139,"version":"3.54.6"},"reference-count":52,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2009,1,29]],"date-time":"2009-01-29T00:00:00Z","timestamp":1233187200000},"content-version":"vor","delay-in-days":2981,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["bpspubs.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["British J Pharmacology"],"published-print":{"date-parts":[[2000,12]]},"abstract":"<jats:p>\n<jats:list list-type=\"explicit-label\">\n<jats:list-item><jats:p>Non\u2010selective inhibitors of cyclic nucleotide phosphodiesterase (PDE) block allergen\u2010induced contraction of passively sensitized human airways <jats:italic>in vitro<\/jats:italic> by a dual mechanism involving a direct relaxant effect on smooth muscle and inhibition of histamine and cysteinyl leukotriene (LT) release from airways. We investigated the effects of non\u2010selective PDE inhibitors and selective inhibitors of PDE3 and PDE4 in order to determine the involvement of PDE isoenzymes in the suppression of allergic bronchoconstriction.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Macroscopically normal airways from 76 patients were sensitized with IgE\u2010rich sera (&gt;250\u2003u\u2003ml<jats:sup>\u22121<\/jats:sup>) containing specific antibodies against allergen (<jats:italic>Dermatophagoides farinae<\/jats:italic>). Contractile responses of bronchial rings were assessed using standard organ bath techniques.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Passive sensitization caused increased contractile responses to allergen, histamine and LTC<jats:sub>4<\/jats:sub>. Non\u2010selective PDE inhibitors (theophylline, 3\u2010isobutyl\u20101\u2010methylxanthine [IBMX]), a PDE3\u2010selective inhibitor (motapizone), PDE4\u2010selective inhibitors (RP73401, rolipram, AWD 12\u2010281) and a mixed PDE3\/4 inhibitor (zardaverine) all significantly relaxed inherent bronchial tone at resting tension and to a similar degree. Theophylline, IBMX, zardaverine and the combination of motapizone and RP73401 inhibited the contractile responses to allergen and LTC<jats:sub>4<\/jats:sub>. Pre\u2010treatment with motapizone, RP73401, rolipram or the methylxanthine adenosine receptor antagonist, 8\u2010phenyltheophylline, did not significantly decrease responses to either allergen or LTC<jats:sub>4<\/jats:sub>.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>We conclude that combined inhibition of PDE3 and PDE4, but not selective inhibition of either isoenzyme or antagonism of adenosine receptors, is effective in suppressing allergen\u2010induced contractions of passively sensitized human airways. The relationship between allergen\u2010 and LTC<jats:sub>4<\/jats:sub>\u2010induced responses suggests that PDE inhibitors with PDE3 and PDE4 selectivity are likely to act in part through inhibition of mediator release and not simply through direct relaxant actions on airway smooth muscle.<\/jats:p><\/jats:list-item>\n<\/jats:list>\n<\/jats:p><jats:p><jats:italic>British Journal of Pharmacology<\/jats:italic> (2000) <jats:bold>131<\/jats:bold>, 1607\u20131618; doi:<jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"doi\" xlink:href=\"10.1038\/sj.bjp.0703725\">10.1038\/sj.bjp.0703725<\/jats:ext-link><\/jats:p>","DOI":"10.1038\/sj.bjp.0703725","type":"journal-article","created":{"date-parts":[[2005,1,28]],"date-time":"2005-01-28T21:02:25Z","timestamp":1106946145000},"page":"1607-1618","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":78,"title":["The effect of selective and non\u2010selective phosphodiesterase inhibitors on allergen\u2010 and leukotriene C<sub>4<\/sub>\u2010induced contractions in passively sensitized human airways"],"prefix":"10.1111","volume":"131","author":[{"given":"Dunja T","family":"Schmidt","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nikki","family":"Watson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gordon","family":"Dent","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elke","family":"R\u00fchlmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Detlev","family":"Branscheid","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helgo","family":"Magnussen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Klaus F","family":"Rabe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2009,1,29]]},"reference":[{"key":"e_1_2_7_2_1","first-page":"A239","article-title":"Effect of isoenzyme\u2010selective inhibitors of phosphodiesterase (PDE) on human lung mast cells (HLMC)","volume":"8","author":"ANDERSON N.","year":"1994","journal-title":"FASEB J."},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1021\/jm00037a021"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2222.1996.tb01136.x"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1152\/physrev.1995.75.4.725"},{"key":"e_1_2_7_6_1","first-page":"37","article-title":"Phosphodiesterase inhibition and theophylline","volume":"109","author":"BERGSTRAND H.","year":"1980","journal-title":"Eur. 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