PMID- 8575577 OWN - NLM STAT- MEDLINE DCOM- 19960314 LR - 20131121 IS - 0903-1936 (Print) IS - 0903-1936 (Linking) VI - 8 IP - 9 DP - 1995 Sep TI - Allergic sensitization is associated with increased bronchial responsiveness: a prospective study of allergy to laboratory animals. PG - 1514-9 AB - The purpose of this prospective study was to investigate the extent of change in bronchial responsiveness and the prognostic value of methacholine provocation in early sensitization to laboratory animals. Thirty eight laboratory technicians were studied during training (before first exposure) and after having been exposed to laboratory animals for a median 18 (range 5-33) months. On both occasions they were subjected to spirometry, bronchial methacholine challenge, skin-prick tests and blood sampling, and responded to questionnaires. Nine (24%) developed laboratory animal allergy (LAA), defined as animal work-related symptoms (n = 8), or specific immunoglobulin E (IgE) (n = 7) or both. In the LAA group, bronchial responsiveness was normal before employment, but had increased significantly at follow-up compared to technicians who had not developed LAA. Six of the nine LAA subjects had a more than threefold increase in bronchial responsiveness, and three of these reported chest symptoms. Spirometric values were not different between the groups prior to exposure or at follow-up, and had no prognostic value. However, a pre-employment level of total IgE > 100 kU.L-1 predicted the development of LAA (relative risk 2.8). Thus, early LAA was associated with increased bronchial responsiveness in most subjects. In contrast to total IgE, the level of pre-employment bronchial responsiveness or lung function did not influence the magnitude of change in responsiveness, nor predict sensitization. FAU - Renstrom, A AU - Renstrom A AD - National Institute of Occupational Health, Sweden. FAU - Malmberg, P AU - Malmberg P FAU - Larsson, K AU - Larsson K FAU - Larsson, P H AU - Larsson PH FAU - Sundblad, B M AU - Sundblad BM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Eur Respir J JT - The European respiratory journal JID - 8803460 RN - 0 (Bronchoconstrictor Agents) RN - 0W5ETF9M2K (Methacholine Chloride) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adolescent MH - Adult MH - *Animal Technicians MH - Animals MH - Animals, Laboratory/*immunology MH - Bronchial Hyperreactivity/etiology/*immunology MH - Bronchial Provocation Tests MH - Bronchoconstrictor Agents MH - Chickens MH - Cricetinae MH - Female MH - Horses MH - Humans MH - Immunoglobulin E/*analysis MH - Male MH - Methacholine Chloride MH - Mice MH - Occupational Diseases/etiology/*immunology MH - Occupational Exposure/adverse effects MH - Patch Tests MH - Prospective Studies MH - Rabbits MH - Respiratory Function Tests MH - Swine EDAT- 1995/09/01 00:00 MHDA- 1995/09/01 00:01 CRDT- 1995/09/01 00:00 PHST- 1995/09/01 00:00 [pubmed] PHST- 1995/09/01 00:01 [medline] PHST- 1995/09/01 00:00 [entrez] PST - ppublish SO - Eur Respir J. 1995 Sep;8(9):1514-9.