{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T23:12:05Z","timestamp":1774566725774,"version":"3.50.1"},"reference-count":10,"publisher":"BMJ","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Occup Environ Med"],"published-print":{"date-parts":[[2000,1,1]]},"abstract":"<jats:sec><jats:title>OBJECTIVES<\/jats:title><jats:p>To assess the efficacy of dust respirators in preventing asthma attacks in patients with occupational asthma (asthma induced by buckwheat flour or wheat flour).<\/jats:p><\/jats:sec><jats:sec sec-type=\"methods\"><jats:title>METHODS<\/jats:title><jats:p>The effect of the work environment was examined in two patients with occupational asthma with and without the use of a commercially available mask or a dust respirator. Pulmonary function tests were performed immediately before and after work and at 1 hourly intervals for 14 hours after returning to the hospital.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>In patient 1, environmental exposure resulted in no symptoms during and immediately after work, but coughing, wheezing, and dyspnoea developed after 6 hours. Peak expiratory flow rate (PEFR) decreased by 44% 7 hours after leaving the work environment, showing only a positive late asthmatic reaction (LAR). In patient 2, environmental exposure resulted in coughing and wheezing 10 minutes after initiation during bread making, and PEFR decreased by 39%. After 7 hours, PEFR decreased by 34%. The environmental provocation tests in both patients were repeated after wearing a commercial respirator. This resulted in a complete suppression of LAR in patient 1 and of immediate asthmatic reaction (IAR) and LAR in patient 2.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSIONS<\/jats:title><jats:p>Two patients with asthma induced by buckwheat flour or wheat flour in whom asthmatic attacks could be prevented with a dust respirator are reported. Dust respirators are effective in preventing asthma attacks induced by buckwheat flour and wheat flour.<\/jats:p><\/jats:sec>","DOI":"10.1136\/oem.57.1.62","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T10:38:40Z","timestamp":1027766320000},"page":"62-64","source":"Crossref","is-referenced-by-count":12,"title":["Two patients with occupational asthma who returned to work with dust respirators: Table 1"],"prefix":"10.1136","volume":"57","author":[{"given":"Yasushi","family":"Obase","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Terufumi","family":"Shimoda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuko","family":"Mitsuta","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroto","family":"Matsuse","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shigeru","family":"Kohno","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2000,1,1]]},"reference":[{"key":"2024052310220740000_57.1.62.1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(96)07219-4"},{"key":"2024052310220740000_57.1.62.2","doi-asserted-by":"crossref","first-page":"811","DOI":"10.1016\/S0025-7125(16)30554-5","article-title":"A clinician's approach to determine the diagnosis, prognosis, and therapy of occupational asthma.","volume":"74","author":"Chan-Yeung","year":"1990","journal-title":"Med Clin North Am"},{"key":"2024052310220740000_57.1.62.3","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2222.1977.tb01448.x"},{"key":"2024052310220740000_57.1.62.4","doi-asserted-by":"publisher","DOI":"10.1136\/oem.52.4.279"},{"key":"2024052310220740000_57.1.62.5","doi-asserted-by":"publisher","DOI":"10.1136\/oem.51.9.584"},{"key":"2024052310220740000_57.1.62.6","doi-asserted-by":"publisher","DOI":"10.3109\/02770907209108761"},{"key":"2024052310220740000_57.1.62.7","first-page":"149","article-title":"Occupational asthma and contact urticaria caused by buckwheat flour.","volume":"63","author":"Valdivieso","year":"1989","journal-title":"Ann Allergy"},{"key":"2024052310220740000_57.1.62.8","first-page":"319","article-title":"Occupational asthma caused by buckwheat flour.","volume":"14","author":"Choudat","year":"1997","journal-title":"Rev Mal Respir"},{"key":"2024052310220740000_57.1.62.9","doi-asserted-by":"crossref","first-page":"503","DOI":"10.5271\/sjweh.375","article-title":"Powered dust respirator helmets in the prevention of occupational asthma among farmers.","volume":"24","author":"Taivainen","year":"1998","journal-title":"Scand J Work Environ Health"},{"key":"2024052310220740000_57.1.62.10","doi-asserted-by":"publisher","DOI":"10.1136\/oem.51.4.225"}],"container-title":["Occupational and Environmental Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/oem.57.1.62","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,23]],"date-time":"2024-05-23T17:23:19Z","timestamp":1716484999000},"score":1,"resource":{"primary":{"URL":"https:\/\/oem.bmj.com\/lookup\/doi\/10.1136\/oem.57.1.62"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2000,1,1]]},"references-count":10,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2000,1,1]]},"published-print":{"date-parts":[[2000,1,1]]}},"alternative-id":["10.1136\/oem.57.1.62"],"URL":"https:\/\/doi.org\/10.1136\/oem.57.1.62","relation":{},"ISSN":["1351-0711","1470-7926"],"issn-type":[{"value":"1351-0711","type":"print"},{"value":"1470-7926","type":"electronic"}],"subject":[],"published":{"date-parts":[[2000,1,1]]}}}