PMID- 24285922 OWN - NLM STAT- MEDLINE DCOM- 20140609 LR - 20220409 IS - 1178-2013 (Electronic) IS - 1176-9114 (Print) IS - 1176-9114 (Linking) VI - 8 DP - 2013 TI - Allergenicity and toxicology of inhaled silver nanoparticles in allergen-provocation mice models. PG - 4495-506 LID - 10.2147/IJN.S52239 [doi] AB - Silver nanoparticles (AgNP) have been associated with the exacerbation of airway hyperresponsiveness. However, the allergenicity and toxicology of AgNP in healthy and allergic individuals are unclear. We investigated the pathophysiological responses to AgNP inhalation in a murine model of asthma. Continuous and stable levels of 33 nm AgNP were maintained at 3.3 mg/m(3) during the experimental period. AgNP exposure concomitant with ovalbumin challenge increased the enhanced pause (Penh) in the control and allergic groups. AgNP evoked neutrophil, lymphocyte and eosinophil infiltration into the airways and elevated the levels of allergic markers (immunoglobulin E [IgE] and leukotriene E4 [LTE4]), the type 2 T helper (Th2) cytokine interleukin-13 (IL-13), and oxidative stress (8-hydroxy-2'-deoxyguanosine [8-OHdG]) in healthy and allergic mice. Bronchocentric interstitial inflammation was observed after AgNP inhalation. After inhalation, the AgNP accumulated predominantly in the lungs, and trivial amounts of AgNP were excreted in the urine and feces. Furthermore, the AgNP induced inflammatory responses in the peritoneum. The inhalation of AgNP may present safety concerns in healthy and susceptible individuals. FAU - Chuang, Hsiao-Chi AU - Chuang HC AD - School of respiratory Therapy, College of Medicine Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan ; Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan. FAU - Hsiao, Ta-Chih AU - Hsiao TC FAU - Wu, Cheng-Kuan AU - Wu CK FAU - Chang, Hui-Hsien AU - Chang HH FAU - Lee, Chii-Hong AU - Lee CH FAU - Chang, Chih-Cheng AU - Chang CC FAU - Cheng, Tsun-Jen AU - Cheng TJ CN - Taiwan CardioPulmonary Research Group (T-CPR) LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131122 PL - New Zealand TA - Int J Nanomedicine JT - International journal of nanomedicine JID - 101263847 RN - 3M4G523W1G (Silver) RN - 88847-89-6 (8-Hydroxy-2'-Deoxyguanosine) RN - 9006-59-1 (Ovalbumin) RN - G9481N71RO (Deoxyguanosine) SB - IM MH - 8-Hydroxy-2'-Deoxyguanosine MH - Administration, Inhalation MH - Animals MH - Deoxyguanosine/analogs & derivatives/analysis/metabolism MH - Female MH - Metal Nanoparticles/administration & dosage/chemistry/*toxicity MH - Mice MH - Mice, Inbred BALB C MH - Organ Specificity MH - Ovalbumin MH - Oxidative Stress/*drug effects MH - Pneumonia/*chemically induced/immunology/pathology MH - Respiratory Hypersensitivity/immunology MH - Silver/administration & dosage/chemistry/*immunology/*toxicity PMC - PMC3841295 OTO - NOTNLM OT - inductively coupled plasma-mass spectrometry OT - inflammation OT - leukotriene E4 OT - ovalbumin OT - oxidative stress EDAT- 2013/11/29 06:00 MHDA- 2014/06/10 06:00 PMCR- 2013/11/22 CRDT- 2013/11/29 06:00 PHST- 2013/11/29 06:00 [entrez] PHST- 2013/11/29 06:00 [pubmed] PHST- 2014/06/10 06:00 [medline] PHST- 2013/11/22 00:00 [pmc-release] AID - ijn-8-4495 [pii] AID - 10.2147/IJN.S52239 [doi] PST - ppublish SO - Int J Nanomedicine. 2013;8:4495-506. doi: 10.2147/IJN.S52239. Epub 2013 Nov 22.