PMID- 25303285 OWN - NLM STAT- MEDLINE DCOM- 20150629 LR - 20211021 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 9 IP - 10 DP - 2014 TI - Persistence of asthmatic response after ammonium persulfate-induced occupational asthma in mice. PG - e109000 LID - 10.1371/journal.pone.0109000 [doi] LID - e109000 AB - INTRODUCTION: Since persulfate salts are an important cause of occupational asthma (OA), we aimed to study the persistence of respiratory symptoms after a single exposure to ammonium persulfate (AP) in AP-sensitized mice. MATERIAL AND METHODS: BALB/c mice received dermal applications of AP or dimethylsulfoxide (DMSO) on days 1 and 8. On day 15, they received a single nasal instillation of AP or saline. Airway hyperresponsiveness (AHR) was assessed using methacholine provocation, while pulmonary inflammation was evaluated in bronchoalveolar lavage (BAL), and total serum immunoglobulin E (IgE), IgG1 and IgG2a were measured in blood at 1, 4, 8, 24 hours and 4, 8, 15 days after the single exposure to the causal agent. Histological studies of lungs were assessed. RESULTS: AP-treated mice showed a sustained increase in AHR, lasting up to 4 days after the challenge. There was a significant increase in the percentage of neutrophils 8 hours after the challenge, which persisted for 24 hours in AP-treated mice. The extent of airway inflammation was also seen in the histological analysis of the lungs from challenged mice. Slight increases in total serum IgE 4 days after the challenge were found, while IgG gradually increased further 4 to 15 days after the AP challenge in AP-sensitized mice. CONCLUSIONS: In AP-sensitized mice, an Ig-independent response is induced after AP challenge. AHR appears immediately, but airway neutrophil inflammation appears later. This response decreases in time; at early stages only respiratory and inflammatory responses decrease, but later on immunological response decreases as well. FAU - Olle-Monge, Marta AU - Olle-Monge M AD - Servicio de Neumologia, Hospital Universitario Vall d'Hebron, Barcelona, Spain; CIBER Enfermedades Respiratorias (CibeRes), Barcelona, Spain; Departament de Medicina, Universitat Autonoma de Barcelona, Barcelona, Spain. FAU - Munoz, Xavier AU - Munoz X AD - Servicio de Neumologia, Hospital Universitario Vall d'Hebron, Barcelona, Spain; CIBER Enfermedades Respiratorias (CibeRes), Barcelona, Spain; Department of Cell Biology, Physiology and Immunology, Universitat Autonoma de Barcelona, Barcelona, Spain. FAU - Vanoirbeek, Jeroen A J AU - Vanoirbeek JA AD - Centre for Environment and Health, KU Leuven, Leuven, Belgium. FAU - Gomez-Olles, Susana AU - Gomez-Olles S AD - Servicio de Neumologia, Hospital Universitario Vall d'Hebron, Barcelona, Spain; CIBER Enfermedades Respiratorias (CibeRes), Barcelona, Spain. FAU - Morell, Ferran AU - Morell F AD - Servicio de Neumologia, Hospital Universitario Vall d'Hebron, Barcelona, Spain; CIBER Enfermedades Respiratorias (CibeRes), Barcelona, Spain. FAU - Cruz, Maria-Jesus AU - Cruz MJ AD - Servicio de Neumologia, Hospital Universitario Vall d'Hebron, Barcelona, Spain; CIBER Enfermedades Respiratorias (CibeRes), Barcelona, Spain. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141010 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Immunoglobulin G) RN - 22QF6L357F (ammonium peroxydisulfate) RN - 37341-29-0 (Immunoglobulin E) RN - SU46BAM238 (Ammonium Sulfate) SB - IM MH - *Ammonium Sulfate MH - Animals MH - Asthma, Occupational/blood/*chemically induced/immunology/pathology MH - Bronchoalveolar Lavage MH - Disease Models, Animal MH - Immunoglobulin E/blood/immunology MH - Immunoglobulin G/blood/immunology MH - Inflammation/blood/immunology/pathology MH - Lung/immunology/*pathology MH - Male MH - Mice MH - Mice, Inbred BALB C PMC - PMC4193836 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2014/10/11 06:00 MHDA- 2015/06/30 06:00 PMCR- 2014/10/10 CRDT- 2014/10/11 06:00 PHST- 2014/06/04 00:00 [received] PHST- 2014/08/31 00:00 [accepted] PHST- 2014/10/11 06:00 [entrez] PHST- 2014/10/11 06:00 [pubmed] PHST- 2015/06/30 06:00 [medline] PHST- 2014/10/10 00:00 [pmc-release] AID - PONE-D-14-24354 [pii] AID - 10.1371/journal.pone.0109000 [doi] PST - epublish SO - PLoS One. 2014 Oct 10;9(10):e109000. doi: 10.1371/journal.pone.0109000. eCollection 2014.