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Yanagisawa R, Koike E, Ichinose T, Takano H. Obese mice are resistant to eosinophilic airway inflammation induced by diesel exhaust particles. J Appl Toxicol 2013; 34:688-94. [PMID: 24105835 DOI: 10.1002/jat.2925] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/02/2013] [Accepted: 08/02/2013] [Indexed: 11/09/2022]
Abstract
Particulate matter can exacerbate respiratory diseases such as asthma. Diesel exhaust particles are the substantial portion of ambient particulate matter with a <2.5 µm diameter in urban areas. Epidemiological data indicate increased respiratory health effects of particulate matter in obese individuals; however, the association between obesity and diesel exhaust particle-induced airway inflammation remains unclear. We aimed to investigate the differences in susceptibility to airway inflammation induced by exposure to diesel exhaust particles between obese mice (db/db) and lean mice (db/+m). Female db/db and db/+m mice were intratracheally administered diesel exhaust particles or vehicle every 2 weeks for a total of seven times. The cellular profile of bronchoalveolar lavage fluid and histological changes in the lungs were assessed and the lungs and serum were analyzed for the generation of cytokines, chemokines and soluble intercellular adhesion molecule 1. Diesel exhaust particle exposure-induced eosinophilic infiltration in db/+m mice accompanied by T-helper 2 cytokine, chemokine and soluble intercellular adhesion molecule 1 expression in the lungs. In contrast, it induced mild neutrophilic airway inflammation accompanied by elevated cytokines and chemokines in db/db mice. The lungs of db/db mice exhibited decreased expression of eosinophil activators/chemoattractants such as interleukin-5, interleukin-13 and eotaxin compared with those of db/+m mice. In addition, serum eotaxin and monocyte chemotactic protein-1 levels were significantly higher in db/db mice than in db/+m mice. In conclusion, obesity can affect susceptibility to diesel exhaust particle-induced airway inflammation, which is possibly due to differences in local and systemic inflammatory responses between lean and obese individuals.
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Sadakane K, Ichinose T, Takano H, Yanagisawa R, Koike E, Inoue KI. The alkylphenols 4-nonylphenol, 4-tert-octylphenol and 4-tert-butylphenol aggravate atopic dermatitis-like skin lesions in NC/Nga mice. J Appl Toxicol 2013; 34:893-902. [DOI: 10.1002/jat.2911] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Revised: 06/21/2013] [Accepted: 06/21/2013] [Indexed: 11/09/2022]
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Tanaka M, Aoki Y, Takano H, Fujitani Y, Hirano S, Nakamura R, Sone Y, Kiyono M, Ichinose T, Itoh T, Inoue KI. Effects of exposure to nanoparticle-rich or -depleted diesel exhaust on allergic pathophysiology in the murine lung. J Toxicol Sci 2013; 38:35-48. [PMID: 23358138 DOI: 10.2131/jts.38.35] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Although it has been shown that exposure to diesel exhaust (DE) is linked to the induction or exacerbation of respiratory disorders, the major components responsible have not been fully identified. We examined the effects of airway exposure to nanoparticle-rich DE (NR-DE) or DE without particles on allergic pulmonary inflammation in mice. We also investigated the cellular responses to intratracheal instillation of NR-DE particles (NR-DEP). ICR mice inhaled one of four different mixtures (control air, low-concentration DE, high-concentration DE, and high-concentration DE without particles) for 8 weeks in the presence or absence of repeated intratracheal administration of ovalbumin (OVA). In a separate study, NR-DEP and/or OVA were repeatedly administrated intratracheally to mice. High-concentration NR-DE or DE without particles substantially exacerbated OVA-induced eosinophilic airway inflammation. This exacerbation was concomitant with increases in lung levels of Th2 cytokines such as interleukin (IL)-4, IL-5, and IL-13 and of chemokines such as monocyte chemotactic protein-1. Furthermore, in the presence of allergen, both DE without particles and high-concentration NR-DE strongly enhanced the production and release of myeloperoxidase into the alveolar spaces. Repeated administration of NR-DEP did not substantially affect the allergic asthma. These results strongly suggest that gaseous compounds in NR-DE aggravate murine allergic airway inflammation, mainly via amplification of the Th2 response.
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He M, Ichinose T, Song Y, Yoshida Y, Arashidani K, Yoshida S, Liu B, Nishikawa M, Takano H, Sun G. Effects of two Asian sand dusts transported from the dust source regions of Inner Mongolia and northeast China on murine lung eosinophilia. Toxicol Appl Pharmacol 2013; 272:647-55. [PMID: 23896513 DOI: 10.1016/j.taap.2013.07.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/08/2013] [Accepted: 07/16/2013] [Indexed: 11/18/2022]
Abstract
The quality and quantity of toxic materials adsorbed onto Asian sand dust (ASD) are different based on dust source regions and passage routes. The aggravating effects of two ASDs (ASD1 and ASD2) transported from the source regions of Inner Mongolia and northeast China on lung eosinophilia were compared to clarify the role of toxic materials in ASD. The ASDs contained different amounts of lipopolysaccharides (LPS) and β-glucan (ASD1<ASD2) and SiO2 (ASD1>ASD2). CD-1 mice were instilled intratracheally with ASD1, ASD2 and/or ovalbumin (OVA) four times at 2-week intervals. ASD1 and ASD2 enhanced eosinophil recruitment induced by OVA in the submucosa of the airway, with goblet cell proliferation in the bronchial epithelium. ASD1 and ASD2 synergistically increased OVA-induced eosinophil-relevant cytokines interleukin-5 (IL-5), IL-13 (ASD1<ASD2) and chemokine eotaxin (ASD1>ASD2) in bronchoalveolar lavage fluid. ASD2 aggravating effects on lung eosinophilia were greater than ASD1. The role of LPS and β-glucan in ASD2 on the production of pro-inflammatory mediators was assessed using in vitro bone marrow-derived macrophages (BMDMs) from wild type, Toll-like receptor 2-deficient (TLR2-/-), TLR4-/-, and MyD88-/- mice (on Balb/c background). ASD2-stimulated TLR2-/- BMDMs enhanced IL-6, IL-12, TNF-α, MCP-1 and MIP-1α secretion compared with ASD2-stimulated TLR4-/- BMDMs. Protein expression from ASD2-stimulated MyD88-/- BMDM were very low or undetectable. The in vitro results indicate that lung eosinophilia caused by ASD is TLR4 dependent. Therefore, the aggravation of OVA-related lung eosinophilia by ASD may be dependent on toxic substances derived from microbes, such as LPS, rather than SiO2.
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Tanaka M, Takano H, Fujitani Y, Hirano S, Ichinose T, Shimada A, Inoue KI. Effects of exposure to nanoparticle-rich diesel exhaust on 8-OHdG synthesis in the mouse asthmatic lung. Exp Ther Med 2013; 6:703-706. [PMID: 24137251 PMCID: PMC3786854 DOI: 10.3892/etm.2013.1198] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 05/16/2013] [Indexed: 01/05/2023] Open
Abstract
It has been demonstrated that exposure to diesel exhaust (DE) is associated with the induction and exacerbation of respiratory disorders; however, the impacts of DE containing mainly nanoparticles have been less studied. We have previously demonstrated that inhalation exposure to nanoparticle-rich DE (NR-DE) exacerbated allergic pulmonary inflammation, in the context of enhanced local expression of proinflammatory molecules. However, the underlying mechanisms have not been fully elucidated. 8-Hydroxydeoxyguanosine (8-OHdG) is a marker of oxidative damage, particularly in DNA. This study examined the effects of NR-DE on 8-OHdG synthesis in the lung in the presence or absence of an allergen. Institute for Cancer Research (ICR) mice were exposed by inhalation to four different gas compositions (control air, low-concentration DE, high-concentration DE and high-concentration DE without particulate matter) for 8 weeks, in the presence or absence of repetitive intratracheal administration of ovalbumin (OVA). Thereafter, we assessed the levels of 8-OHdG synthesis and expression in the lungs by means of enzyme immunoassay (EIA) and immunohistochemistry. The EIA revealed that the level of 8-OHdG was significantly higher in the high-concentration NR-DE-exposed and allergen-sensitized/stimulated group compared with that in the control air-exposed and allergen-treated group. The immunohistochemistry results demonstrated that the level of immunoreactive 8-OHdG was higher in the NR-DE-exposed and allergen-treated lungs compared with that in the corresponding control air-exposed lungs. The results suggested that NR-DE exposure enhanced 8-OHdG formation in asthmatic lungs. This, at least in part, is involved in the NR-DE-mediated exacerbation of the allergic pathophysiology that was identified in our previous study.
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Sadakane K, Ichinose T, Takano H, Yanagisawa R, Inoue KI, Kawazato H, Yasuda A, Hayakawa K. Organic chemicals in diesel exhaust particles enhance picryl chloride-induced atopic dermatitis in NC/Nga mice. Int Arch Allergy Immunol 2013; 162:7-15. [PMID: 23817207 DOI: 10.1159/000350765] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Accepted: 03/08/2013] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Diesel exhaust particles (DEP) have been reported to worsen allergic airway inflammation in mice. Recently, the organic chemical components of DEP (DEP-OC) were found to be important contributors to the aggravation of allergic airway inflammation in mice. The purpose of this study was to examine the effects of DEP-OC on atopic dermatitis (AD)-like skin lesions induced by picryl chloride (PiCl) in NC/Nga mice. METHODS DEP were extracted with benzene/ethanol, and the soluble organic fraction formed the DEP-OC. NC/Nga male mice received simultaneous application of DEP-OC and/or PiCl on their ears once a week for 9 or 3 weeks. We evaluated skin lesions by noting scaling, eruption, excoriation, erosion, hemorrhage, pathologic changes, production of cytokines, and IgE level in the serum. RESULTS PiCl application alone produced progressively severe AD-like skin lesions. The application of PiCl plus DEP-OC resulted in a marked worsening of skin lesions in the early stages of AD. Moreover, mast cell counts significantly increased in the subcutaneous tissue. Administration of PiCl combined with DEP-OC resulted in a greater increase in the local expression of interleukin-4, keratinocyte chemoattractant, and neutrophils in subcutaneous tissue compared with PiCl treatment alone. In contrast, the combination treatment produced lower levels of IFN-γ compared with PiCl treatment alone. CONCLUSIONS DEP-OC application to the skin aggravated PiCl-induced AD. This aggravation may be due to activation of the Th2-associated immune responses by the organic chemicals in DEP.
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He M, Ichinose T, Yoshida S, Takano H, Nishikawa M, Sun G, Shibamoto T. Induction of immune tolerance and reduction of aggravated lung eosinophilia by co-exposure to Asian sand dust and ovalbumin for 14 weeks in mice. Allergy Asthma Clin Immunol 2013; 9:19. [PMID: 23731974 PMCID: PMC3680064 DOI: 10.1186/1710-1492-9-19] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 05/08/2013] [Indexed: 12/21/2022] Open
Abstract
Background Atmospheric contamination caused by Asian sand-dust (ASD) storms aggravates asthma in both human adults and children. This study aims to investigate a series of manifestations in allergic airway disease caused by co-exposure to allergens and ASD for 6 weeks and 14 weeks. Methods CD-1 Mice were instilled intratracheally with 0.1 mg of ASD/mouse four times (6 weeks) or eight times (14 weeks) at 2-week intervals (total dose of 0.4 mg or 0.8 mg/mouse) with or without ovalbumin (OVA). The pathologic changes in the airway, cytological alteration in bronchoalveolar lavage fluid (BALF), and levels of inflammatory cytokines/chemokines in BALF, and OVA-specific IgE and IgG1 antibodies in serum were measured in the treated CD-1 mice. Results Four-time co-exposure to OVA and ASD aggravates allergic airway inflammation along with Th2-cytokine IL-13 and eosinophil-relevant cytokine/chemokines IL-5, Eotaxin and MCP-3 in BALF, and fibrous thickening of the subepithelial layer in the airway. On the other hand, eight-time co-exposure attenuates these changes along with a significant increase of TGF-β1 in BALF. Adjuvant effects of ASD toward IgG1 and IgE production in sera were, however, still seen in the eight-time co-exposure. Conclusions These results indicate that the immune responses in airways are exacerbated by four-time co-exposure to ASD with OVA, but that there is a shift to suppressive responses in eight-time co-exposure, suggesting that the responses are caused by TGF-β1-related immune tolerance.
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He M, Inoue KI, Yoshida S, Tanaka M, Takano H, Sun G, Ichinose T. Effects of airway exposure to di-(2-ethylhexyl) phthalate on allergic rhinitis. Immunopharmacol Immunotoxicol 2013; 35:390-5. [DOI: 10.3109/08923973.2013.787432] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Honda A, Matsuda Y, Murayama R, Tsuji K, Nishikawa M, Koike E, Yoshida S, Ichinose T, Takano H. Effects of Asian sand dust particles on the respiratory and immune system. J Appl Toxicol 2013; 34:250-7. [DOI: 10.1002/jat.2871] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 01/16/2013] [Accepted: 01/30/2013] [Indexed: 11/06/2022]
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Yoshida S, Takano H, Nishikawa M, Miao H, Ichinose T. Effects of fetal exposure to urban particulate matter on the immune system of male mouse offspring. Biol Pharm Bull 2012; 35:1238-43. [PMID: 22863919 DOI: 10.1248/bpb.b110708] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Urban particulate matter (UPM) has been shown to have an aggravating effect on Th2-associated immune systems in adult mice. However, the effects of fetal exposure to UPM on immune response in offspring have not been elucidated. In the present study, we administered UPM (200 µg/animal) by intratracheal injection to pregnant dams on days 7 and 14 of gestation. Subsequently, 9- and 24-week-old male offspring were intratracheally injected with ovalbumin (OVA) (four times at 2-week intervals) to create a mouse model of bronchial asthma. We then evaluated the progression of allergic manifestations in the offspring through histological findings, the number of inflammatory cells in bronchoalveolar lavage fluid (BALF), and protein concentration of cytokines and chemokines in BALF 5, 10, 15, and 30 weeks after birth. Histological examination showed that fetal exposure to UPM alone caused slight eosinophil and lymphocyte infiltration in the submucosa of the airway and bronchial epithelium and significant increases in the number of macrophages. Moreover, postnatal intratracheal administration of OVA to offspring exposed to UPM in utero caused significant increases in the numbers of macrophages, eosinophils, and lymphocytes and in the concentrations of their relevant cytokines and chemokines, showing that fetal exposure to UPM aggravated the chemically sensitized immune system of male offspring.
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Ichinose T, Yamanushi T, Seto H, Sagai M. Oxygen radicals in lung carcinogenesis accompanying phagocytosis of diesel exhaust particles. Int J Oncol 2012; 11:571-5. [PMID: 21528248 DOI: 10.3892/ijo.11.3.571] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
We sought to examine the involvement of oxygen radicals derived from phagocytosis process in lung carcinogenesis induced by diesel exhaust particles (DEP). The carcinogenic response and formation of 8-hydroxydeoxyguanosine (8-OHdG) were examined in the lungs of mice intratracheally injected with washed DEP (WDEP), DEP, or nontoxic control particles of titanium dioxide (TiO2). After 10 weekly treatments with these particles, the formation of 8-OHdG in the lungs of mice treated with WDEP or DEP showed a significant increase, but not in those treated with TiO2. After 12 months, the incidence of lung tumors in mice treated with WDEP or DEP was higher than that of mice treated with vehicle by 2.3- and 3.1-fold, respectively. A significant difference in the incidence of tumors was found between the vehicle group and DEP-treated group. Treatment with TiO2 had no effect on the incidence of lung tumors. The formation of 8-OHdG in mice treated with these particles was significantly correlated with the development of lung tumors. These results suggest that the induction of DNA damage by oxygen radicals may be an important factor in the initiation of WDEP- and DEP-induced lung carcinogenesis, and that oxygen radicals derived from the phagocytic process may play a role in 8-OHdG formation induced by DEP.
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Yanagisawa R, Warabi E, Inoue KI, Yanagawa T, Koike E, Ichinose T, Takano H, Ishii T. Peroxiredoxin I null mice exhibits reduced acute lung inflammation following ozone exposure. J Biochem 2012; 152:595-601. [DOI: 10.1093/jb/mvs113] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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He M, Ichinose T, Yoshida S, Takano H, Nishikawa M, Mori I, Sun G, Shibamoto T. Aggravating effects of Asian sand dust on lung eosinophilia in mice immunized beforehand by ovalbumin. Inhal Toxicol 2012; 24:751-61. [DOI: 10.3109/08958378.2012.716870] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Ichinose T, Goto T, Morisako H, Ohata K. The Role of Radical Microsurgical Resection in Multimodal Treatment for Skull Base Meningioma. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1314395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Yasuda A, Inoue KI, Sanbongi C, Yanagisawa R, Ichinose T, Tanaka M, Yoshikawa T, Takano H. Dietary supplementation with fructooligosaccharides attenuates allergic peritonitis in mice. Biochem Biophys Res Commun 2012; 422:546-50. [PMID: 22580001 DOI: 10.1016/j.bbrc.2012.05.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 05/02/2012] [Indexed: 12/17/2022]
Abstract
Fructooligosaccharides (FOS) are a prebiotic supplement, which can enhance immunological responses in the host to activate mucosal immunity probably through regulation of gastrointestinal microflora. Nonetheless, the therapeutic potential of prebiotics on allergic pathologies has not been fully elucidated. Therefore, the purpose of this study was to evaluate the preventive and therapeutic effects of dietary supplementation with FOS on a murine model of allergic peritonitis induced by ovalbumin (OVA). Male C3H/HeN mice were intraperitoneally administrated with OVA (1 μg) bi-weekly (Day 0-42, total four times) and were fed a diet containing 0 or 2.5% FOS ad libitum (Day 7-43). At Day 43, mice were killed and several parameters were evaluated. As results, supplementation with FOS alleviated OVA-related peritoneal inflammation characterized by trafficking of polymorphonuclear leukocytes such as eosinophils and neutrophils in the peritoneal cavity. Also, FOS significantly suppressed the protein level of interleukin (IL)-5 and eotaxin in the peritoneal lavage fluid elicited by OVA. In addition, a FOS-supplemented diet significantly reduced the serum allergen specific-IgG(1) level, whereas it significantly increased total IgA levels in the cecal contents as compared with a control diet in the presence of OVA. These results suggest that dietary supplementation with FOS can prevent/ameliorate allergic peritoneal inflammation induced by OVA. The efficacy can at least partially be associated with the regulation of Ig class switching and inhibition of the local expression of IL-5 and eotaxin.
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Yoshida Y, Song Y, Ichinose T. Particles such as an asian sand dust activate autophagic and apoptotic key molecules in CD11b positive cells. (106.6). THE JOURNAL OF IMMUNOLOGY 2012. [DOI: 10.4049/jimmunol.188.supp.106.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Asian sand dust (ASD) is derived from air pollutants in East China and has a long history of appearing in Japan. Recently, it is knowing that ASD contains microbial materials, sulfate (SO(4)(2-)) and nitrate (NO(3)(-)), therefore there is increasing concern for its possible adverse health effects. Although it has been reported that ASD induces inflammatory responses in the lung tissue and causes respiratory diseases such as eosinophilia in mice, the effect of ASD on the peripheral lymphoid organ are not fully understood. In this study, we examine the effect of ASD on immune system. ICR mice were administered intratracheal ASD (0, 0.2, 0.02 mg/mice), and were sacrificed at 4 weeks (1 time per week and total 4 times) after administration. Spleen cells were prepared and cell lysates of splenocytes were resolved in western blotting. Immuno-blotting demonstrated that ASD induced autophagic-maker LC3 and p62 expression and also induced PARP cleavage suggesting caspase-dependent apoptosis in splenocytes. In addition, ASD could increase the expression of TNF-α mRNA analyzed by Real-time PCR. As same as in vivo, we observed ASD enhanced TNF-α production induced by ConA in splenocytes. Taken together, ASD induced systemic inflammation resulting in autophagic and apoptotic phenomena in splenocytes, suggesting that ASD administration not only triggered pulmonary inflammation but also affected peripheral lymphoid tissue.
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Kishikawa R, Imai T, Ichinose T, Okuno Y, Arashidani K, Nishikawa M, Shimoda T, Iwanaga T. Effects of Asian Dust and Spherical Particles Exposure on Human Health and Allergic Symptom, Fukuoka, Japan. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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He M, Ichinose T, Yoshida S, Yamamoto S, Inoue KI, Takano H, Yanagisawa R, Nishikawa M, Mori I, Sun G, Shibamoto T. Asian sand dust enhances murine lung inflammation caused by Klebsiella pneumoniae. Toxicol Appl Pharmacol 2012; 258:237-47. [DOI: 10.1016/j.taap.2011.11.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Revised: 10/31/2011] [Accepted: 11/07/2011] [Indexed: 01/30/2023]
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Ding N, Kunugita N, Ichinose T, Song Y, Yokoyama M, Arashidani K, Yoshida Y. Intratracheal administration of fullerene nanoparticles activates splenic CD11b+ cells. JOURNAL OF HAZARDOUS MATERIALS 2011; 194:324-330. [PMID: 21872392 DOI: 10.1016/j.jhazmat.2011.07.101] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 06/17/2011] [Accepted: 07/28/2011] [Indexed: 05/31/2023]
Abstract
Fullerene nanoparticles ("Fullerenes"), which are now widely used materials in daily life, have been demonstrated to induce elevated pulmonary inflammation in several animal models; however, the effects of fullerenes on the immune system are not fully understood. In the present study, mice received fullerenes intratracheally and were sacrificed at days 1, 6 and 42. Mice that received fullerenes exhibited increased proliferation of splenocytes and increased splenic production of IL-2 and TNF-α. Changes in the spleen in response to fullerene treatment occurred at different time-points than in the lung tissue. Furthermore, fullerenes induced CDK2 expression and activated NF-κB and NFAT in splenocytes at 6 days post-administration. Finally, CD11b(+) cells were demonstrated to function as responder cells to fullerene administration in the splenic inflammatory process. Taken together, in addition to the effects on pulmonary responses, fullerenes also modulate the immune system.
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Inoue KI, Yanagisawa R, Koike E, Nakamura R, Ichinose T, Tasaka S, Kiyono M, Takano H. Effects of carbon black nanoparticles on elastase-induced emphysematous lung injury in mice. Basic Clin Pharmacol Toxicol 2011; 108:234-40. [PMID: 21266011 DOI: 10.1111/j.1742-7843.2010.00638.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Although adverse health effects of particulate matter with a diameter of <100 nm (nanoparticles) have been proposed, biological evidence supporting their promotion of the inflammatory lung response in vivo is limited. This study investigated the impact of pulmonary exposure to carbon black nanoparticles (CBNP) on emphysematous lung injury induced by porcine pancreatic elastase (PPE) in mice. Vehicle, two sizes (14 and 56 nm) of CBNP (50 μg/body: 4 mg/kg), PPE (0.03 U/body: 1 U/kg) or PPE + CBNP was administered intratracheally; thereafter, parameters of inflammatory lung changes were evaluated at several time-points. CBNP of 14 nm significantly induced acute lung inflammation in non-elicited subjects and aggravated PPE-elicited airway neutrophilic inflammation at an early stage (day 1), which was concomitant with the enhanced lung expression of pro-inflammatory cytokines such as interleukin-1β and chemokine such as keratinocyte-derived chemoattractant. Further, 14-nm CBNP exaggerated emphysematous lung structural changes at a delayed stage (day 14). On the other hand, 56-nm CBNP induced lung inflammation but did not influence PPE-elicited pathophysiology in the lung. Taken together, CBNP at an optimal size and dose can exacerbate PPE-induced pulmonary inflammation and emphysema. This enhancement may be mediated, at least partly, via the increased local expression of pro-inflammatory molecules.
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He M, Ichinose T, Yoshida S, Nishikawa M, Mori I, Yanagisawa R, Takano H, Inoue KI, Sun G, Shibamoto T. Urban particulate matter in Beijing, China, enhances allergen-induced murine lung eosinophilia. Inhal Toxicol 2010; 22:709-18. [PMID: 20560731 DOI: 10.3109/08958371003631608] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
It has been reported that ambient particulate matter (PM) in some large cities, such as Beijing, China, causes adverse respiratory health effects. However, there is currently no experimental report on the relationship between bronchial asthma and urban PM (UPM) in northeast Asia. In this study, the microbial and chemical substances adsorbed onto UPM collected in Beijing were excluded by heat-treatment at 360 degrees C for 30 min. The effects of UPM or heated UPM (H-UPM) toward allergic lung inflammation were compared in murine lungs to investigate the role of organic substances. ICR mice were administrated intratracheally with the two kinds of UPM and/or ovalbumin (OVA) 4 times at 2-week intervals. UPM and H-UPM enhanced eosinophil recruitment induced by OVA in the alveoli and in the submucosa of the airway, which has a goblet cell proliferation in the bronchial epithelium. UPM and H-UPM synergistically increased Th-2 cytokines--interleukin (IL)-4 and IL-13, eosinophil-relevant cytokines and chemokines, such as IL-5 and monocyte chemotactic protein-3 (MCP-3), induced by OVA in bronchoalveolar lavage fluid (BALF). The enhancing effects were much greater in UPM than in H-UPM. UPM induced adjuvant effects on specific immunoglobulin E (IgE) and IgG1 production by OVA. In an in vitro study using RAW264.7 cells, UPM increased the expression of Toll-like receptor 2 (TLR2) mRNA, but not TLR4 mRNA. H-UPM caused no expression of both TLR mRNAs. These results suggest that the aggravated lung eosinophilia in UPM was due to activation of a Th2-associated immune response via the activation of TLR2 by microbial materials. Chemical materials of air pollutant origin contained in UPM, and inorganic components (elemental carbon, mineral elements) in H-UPM, could also cause the aggravation.
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He M, Ichinose T, Yoshida S, Nishikawa M, Mori I, Yanagisawa R, Takano H, Inoue KI, Sun G, Shibamoto T. Airborne Asian sand dust enhances murine lung eosinophilia. Inhal Toxicol 2010; 22:1012-25. [DOI: 10.3109/08958378.2010.510151] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Hiraku Y, Kawanishi S, Ichinose T, Murata M. The role of iNOS-mediated DNA damage in infection- and asbestos-induced carcinogenesis. Ann N Y Acad Sci 2010; 1203:15-22. [DOI: 10.1111/j.1749-6632.2010.05602.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Yasuda A, Inoue KI, Sanbongi C, Yanagisawa R, Ichinose T, Yoshikawa T, Takano H. Dietary Supplementation with Fructooligosaccharides Attenuates Airway Inflammation Related to House Dust Mite Allergen in Mice. Int J Immunopathol Pharmacol 2010; 23:727-35. [DOI: 10.1177/039463201002300306] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Fructooligosaccharides (FOS) are prebiotic supplements that can enhance immunological responses in the host to activate mucosal immunity, probably through regulation of gastrointestinal microflora. An area that has not been investigated, however, is the therapeutic potential of prebiotics on allergic airway diseases. The purpose of this study is to evaluate the effects of dietary supplementation with FOS on a murine model of airway inflammation induced by the house dust mite allergen Dermatophagoides farinae (Der f). Male C3H/HeN mice were intratracheally administered with Der f and were fed a diet containing 0% or 2.5% FOS ad libitum. Supplementation with FOS alleviated mite allergen-related airway inflammation characterized by eosinophilic inflammation and goblet cell hyperplasia, which was evidenced by cytological and histological examinations. In addition, the FOS-supplemented diet reduced the serum allergen-specific IgG1 level as compared with a control diet in the presence of the mite allergen. Moreover, FOS tended to suppress the expression of IL-5 and eotaxin in the lungs, which is enhanced by mite allergen. These results suggest that dietary supplementation with FOS can prevent/improve airway inflammation induced by the mite allergen. This effect can be at least partially associated with the inhibition of allergen-specific Ig production and probably with that of IL-5 and eotaxin expression.
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Koike E, Yanagisawa R, Sadakane K, Inoue KI, Ichinose T, Takano H. Effects of diisononyl phthalate on atopic dermatitis in vivo and immunologic responses in vitro. ENVIRONMENTAL HEALTH PERSPECTIVES 2010; 118:472-8. [PMID: 20064775 PMCID: PMC2854722 DOI: 10.1289/ehp.0901255] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Accepted: 11/19/2009] [Indexed: 05/23/2023]
Abstract
BACKGROUND Diisononyl phthalate (DINP), a principal plasticizer in many polyvinyl chloride products, has been shown to have an adjuvant effect on immunoglobulin (Ig) production in mice. However, the effects of DINP on allergic diseases have not been fully elucidated. OBJECTIVES In the present study we investigated the effects of DINP on atopic dermatitis (AD)-like skin lesions induced by Dermatophagoides pteronyssinus (Dp) in atopic-prone NC/Nga mice. METHODS Mice were injected intradermally with Dp on their ears and were exposed to DINP (0, 0.15, 1.5, 15, or 150 mg/kg/day) intraperitoneally. We evaluated clinical scores, ear thickening, histologic findings, protein expression of cytokines/chemokines in the ear, and serum levels of Ig and histamine. Furthermore, we investigated the effects of DINP on bone-marrow-derived dendritic cells (BMDCs) or splenocytes in vitro. After exposure to DINP (0-100 microM), cells were evaluated for phenotype and function. RESULTS DINP aggravated AD-like skin lesions related to Dp. The aggravation was consistent with eosinophilic inflammation, mast cell degranulation, and thymic stromal lymphopoietin (TSLP) expression in the ear. DINP enhanced the expression of cell surface activation markers on BMDCs and their production of TARC/CCL17 (thymus- and activation-regulated chemokine) and MDC/CCL22 (macrophage-derived chemokine), as well as their capacity to stimulate Dp-specific T-cell proliferation. DINP also enhanced interleukin-4 production and Dp-stimulated proliferation of splenocytes. CONCLUSIONS DINP can aggravate AD-like skin lesions related to Dp. The mechanisms of the aggravation might be mediated, at least partly, through the TSLP-related activation of dendritic cells and by direct or indirect activation of the immune cells.
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