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Arakawa H, Hamasaki Y, Kohno Y, Ebisawa M, Kondo N, Nishima S, Nishimuta T, Morikawa A. Japanese guidelines for childhood asthma 2017. Allergol Int 2017; 66:190-204. [PMID: 28108245 DOI: 10.1016/j.alit.2016.11.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Indexed: 10/20/2022] Open
Abstract
The Japanese Guideline for the Diagnosis and Treatment of Allergic Diseases 2017 (JAGL 2017) includes a minor revision of the Japanese Pediatric Guideline for the Treatment and Management of Asthma 2012 (JPGL 2012) by the Japanese Society of Pediatric Allergy and Clinical Immunology. The section on child asthma in JAGL 2017 provides information on how to diagnose asthma between infancy and adolescence (0-15 years of age). It makes recommendations for best practices in the management of childhood asthma, including management of acute exacerbations and non-pharmacological and pharmacological management. This guideline will be of interest to non-specialist physicians involved in the care of children with asthma. JAGL differs from the Global Initiative for Asthma Guideline in that JAGL emphasizes diagnosis and early intervention of children with asthma at <2 years or 2-5 years of age. The first choice of treatment depends on the severity and frequency of symptoms. Pharmacological management, including step-up or step-down of drugs used for long-term management based on the status of asthma control levels, is easy to understand; thus, this guideline is suitable for the routine medical care of children with asthma. JAGL also recommends using a control test in children, so that the physician aims for complete control by avoiding exacerbating factors and appropriately using anti-inflammatory drugs (for example, inhaled corticosteroids and leukotriene receptor antagonists).
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Mashimo Y, Sakurai-Yageta M, Watanabe M, Arima T, Morita Y, Inoue Y, Sato K, Nishimuta T, Suzuki S, Watanabe H, Hoshioka A, Tomiita M, Yamaide A, Kohno Y, Okamoto Y, Shimojo N, Hata A, Suzuki Y. Induction of the Matrix Metalloproteinase 13 Gene in Bronchial Epithelial Cells by Interferon and Identification of its Novel Functional Polymorphism. Inflammation 2017; 39:949-62. [PMID: 26635116 DOI: 10.1007/s10753-015-0291-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Matrix metalloproteinases (MMPs) are a class of extra-cellular and membrane-bound proteases involved in a wide array of physiological and pathological processes including tissue remodeling, inflammation, and cytokine secretion and activation. MMP-13 has been shown to be involved in lung diseases such as acute lung injury, viral infections, and chronic obstructive pulmonary disease; however, the molecular pathogenesis of MMP-13 in these conditions is not well understood. In this study, we investigated the mechanisms and roles of MMP-13 secretion in human small airway epithelial cells (SAECs) and functional polymorphisms of the MMP13 gene. Polyinosinic-polycytidylic acid (poly(I:C)) and interferon β (IFN-β) stimulated the secretion of MMP-13 from SAECs by more than several hundred-fold. Stimulation of the secretion by poly(I:C) was abolished by SB304680 (p38 inhibitor), LY294002 (PI3K inhibitor), Janus kinase (JAK) inhibitor I, RNA-activated protein kinase (PKR) inhibitor, and Bay 11-7082 (NF-κB inhibitor), while stimulation by IFN-β was inhibited by all except Bay 11-7082. These data suggested that the secretion of MMP-13 was mediated through IFN receptor pathways independently of nuclear factor kappa B (NF-κB) and that poly(I:C) stimulated IFN secretion in an NF-κB-dependent manner from SAECs, leading to IFN-stimulated MMP-13 secretion. Chemical MMP-13 inhibitors and MMP-13 small interfering RNA (siRNA) inhibited IFN-stimulated secretion of interferon gamma-inducible protein 10 (IP-10) and regulated on activation, normal T-cell expressed and secreted (RANTES), suggesting that MMP-13 is involved in the secretion of these virus-induced proinflammatory chemokines. We identified a novel functional polymorphism in the promoter region of the MMP13 gene. The MMP13 gene may play important roles in defense mechanisms of airway epithelial cells.
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Affiliation(s)
- Yoichi Mashimo
- Department of Public Health, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Mika Sakurai-Yageta
- Department of Education and Training, Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryomachi, Aobaku, Sendai, 980-8573, Japan
| | - Misa Watanabe
- The Department of Pediatrics, Toho University School of Medicine, Tokyo, Japan
| | - Takayasu Arima
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yoshinori Morita
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yuzaburo Inoue
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kazuki Sato
- Department of Pediatrics, National Shimoshizu Hospital, Yotsukaido, Japan
| | | | - Shuichi Suzuki
- Department of Pediatrics, National Shimoshizu Hospital, Yotsukaido, Japan
| | - Hiroko Watanabe
- Department of Pediatrics, National Shimoshizu Hospital, Yotsukaido, Japan
| | - Akira Hoshioka
- Department of Allergy and Rheumatology, Chiba Children's Hospital, Chiba, Japan
| | - Minako Tomiita
- Department of Allergy and Rheumatology, Chiba Children's Hospital, Chiba, Japan
| | - Akiko Yamaide
- Department of Allergy and Rheumatology, Chiba Children's Hospital, Chiba, Japan
| | - Yoichi Kohno
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yoshitaka Okamoto
- Department of Otorhinolaryngology and Head and Neck Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Naoki Shimojo
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Akira Hata
- Department of Public Health, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yoichi Suzuki
- Department of Public Health, Graduate School of Medicine, Chiba University, Chiba, Japan.
- Department of Education and Training, Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryomachi, Aobaku, Sendai, 980-8573, Japan.
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Mashimo Y, Sakurai-Yageta M, Watanabe M, Arima T, Morita Y, Inoue Y, Sato K, Nishimuta T, Suzuki S, Watanabe H, Hoshioka A, Tomiita M, Yamaide A, Kohno Y, Okamoto Y, Shimojo N, Hata A, Suzuki Y. Erratum to: Induction of the Matrix Metalloproteinase 13 Gene in Bronchial Epithelial Cells by Interferon and Identification of its Novel Functional Polymorphism. Inflammation 2016; 39:963. [PMID: 27000798 DOI: 10.1007/s10753-016-0334-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Yoichi Mashimo
- Department of Public Health, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Mika Sakurai-Yageta
- Department of Education and Training, Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryomachi, Aobaku, Sendai, 980-8573, Japan
| | - Misa Watanabe
- The Department of Pediatrics, Toho University School of Medicine, Tokyo, Japan
| | - Takayasu Arima
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yoshinori Morita
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yuzaburo Inoue
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kazuki Sato
- Department of Pediatrics, National Shimoshizu Hospital, Yotsukaido, Japan
| | | | - Shuichi Suzuki
- Department of Pediatrics, National Shimoshizu Hospital, Yotsukaido, Japan
| | - Hiroko Watanabe
- Department of Pediatrics, National Shimoshizu Hospital, Yotsukaido, Japan
| | - Akira Hoshioka
- Department of Allergy and Rheumatology, Chiba Children's Hospital, Chiba, Japan
| | - Minako Tomiita
- Department of Allergy and Rheumatology, Chiba Children's Hospital, Chiba, Japan
| | - Akiko Yamaide
- Department of Allergy and Rheumatology, Chiba Children's Hospital, Chiba, Japan
| | - Yoichi Kohno
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yoshitaka Okamoto
- Department of Otorhinolaryngology and Head and Neck Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Naoki Shimojo
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Akira Hata
- Department of Public Health, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yoichi Suzuki
- Department of Public Health, Graduate School of Medicine, Chiba University, Chiba, Japan. .,Department of Education and Training, Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryomachi, Aobaku, Sendai, 980-8573, Japan.
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Tomiita M, Campos-Alberto E, Shima M, Namiki M, Sugimoto K, Kojima H, Watanabe H, Sekine K, Nishimuta T, Kohno Y, Shimojo N. Interleukin-10 and interleukin-5 balance in patients with active asthma, those in remission, and healthy controls. Asia Pac Allergy 2015; 5:210-5. [PMID: 26539403 PMCID: PMC4630459 DOI: 10.5415/apallergy.2015.5.4.210] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 10/09/2015] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND The immunological mechanisms of asthma remission remain unclear although several reports have suggested that balance between T helper (Th) 2 cytokines and regulatory cytokines is related. OBJECTIVE To study the balance between interleukin (IL) 10 and IL-5 in asthma clinical remission. METHODS We measured the numbers of IL-5 and IL-10 producing cells in peripheral blood mononuclear cells stimulated with mite antigen obtained from patients with active asthma (group A, n = 18), patients in clinical remission (group R, n = 15) and nonatopic healthy controls (group H, n = 14). RESULTS The numbers of IL-5 producing cells in groups A and R were significantly higher than in group H. The number of IL-5 producing cells was lower in group R than in group A, although the difference was not statistically significant. The number of IL-10 producing cells was higher in group R than in group A, although again the difference was not statistically significant. There was a significant difference in the number of IL-10 producing cells between groups A and H but not between groups R and H. The ratio of the number of IL-10 to IL-5 producing cells was highest in group H followed by groups R and A, and the differences were statistically significant for each pair of groups. CONCLUSION Our study suggests that the IL-10/IL-5 balance is related to clinical asthma. The balance differs between patients in clinical remission and healthy controls, suggesting that allergic inflammation may continue even after clinical asthma remission.
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Affiliation(s)
- Minako Tomiita
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Eduardo Campos-Alberto
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Masayuki Shima
- Department of Public Health, Hyogo College of Medicine, Nishinomiya, Hyogo Prefecture 663-8131, Japan
| | - Masanobu Namiki
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Kazuo Sugimoto
- Department of Allergy, Chiba Aoba Municipal Hospital, Chiba 260-8722, Japan
| | - Hiroyuki Kojima
- Department of Pediatrics, Shimoshizu National Hospital, Chiba 284-0003, Japan
| | - Hiroko Watanabe
- Department of Pediatrics, Shimoshizu National Hospital, Chiba 284-0003, Japan
| | - Kunio Sekine
- Department of Pediatrics, Shimoshizu National Hospital, Chiba 284-0003, Japan
| | - Toshiyuki Nishimuta
- Department of Pediatrics, Shimoshizu National Hospital, Chiba 284-0003, Japan
| | - Yoichi Kohno
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Naoki Shimojo
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
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Abstract
The Japanese Guideline for the Diagnosis and Treatment of Allergic Diseases 2013 (JAGL 2013) describes childhood asthma after the Japanese Pediatric Guideline for the Treatment and Management of Asthma 2012 (JPGL 2012) by the Japanese Society of Pediatric Allergy and Clinical Immunology. JAGL 2013 provides information on diagnosis by age group from infancy to puberty (0-15 years of age), treatment for acute exacerbations, long-term management by anti-inflammatory drugs, daily life guidance, and patient education to allow non-specialist physicians to refer to this guideline for routine medical treatment. JAGL differs from the Global Initiative for Asthma Guideline (GINA) in that JAGL emphasizes early diagnosis and intervention at <2 years and 2-5 years of age. A management method, including step-up or step-down of long-term management drugs based on the status of asthma control levels, as in JAGL, is easy to understand, and thus the Guideline is suitable as a frame of reference for routine medical treatment. JAGL has also introduced treatment and management using a control test on children, recommending that the physician aim at complete control by avoiding exacerbation factors and by appropriate use of anti-inflammatory drugs.
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Affiliation(s)
- Yuhei Hamasaki
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
| | | | - Motohiro Ebisawa
- Department of Allergy, Clinical Research Center for Allergology and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa, Japan
| | - Naomi Kondo
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Sankei Nishima
- National Hospital Organization, Fukuoka National Hospital, Fukuoka, Japan
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Suzuki S, Sato K, Watanabe H, Nezu Y, Nishimuta T. Environmental tobacco exposure is associated with vaccine modified measles in junior high school students. J Med Virol 2015; 87:1853-9. [PMID: 25959288 DOI: 10.1002/jmv.24252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2015] [Indexed: 11/08/2022]
Abstract
Vaccine modified measles (VMM) affects individuals with attenuated vaccine induced immunity. An outbreak of measles occurred in a junior high school, starting from an unvaccinated eighth-grade student who developed natural measles and affected a majority of students who were immunized with a low potent strain of measles vaccine (TD97). To determine whether environmental tobacco smoke (ETS) exposure was associated with the development of VMM in this population, a questionnaire was used asking whether students had VMM symptoms during the outbreak and the smoking status of family members. VMM was defined in the study population as occurrence of fever and/or erythema, along with documented history of measles vaccination. A total of 513 students (85.9%) responded. Overall, the presence of in-house smokers did not differ between VMM students (49.3%) and non-VMM students (50.2%). However, in the ninth grade, presence of an in-house smoker was significantly higher in the family of VMM students (54.0%) than in non-VMM students (36.6%) (P = 0.044). Urinary cotinine levels were also measured in selected students (n = 37). Among families with at least one smoker, urinary cotinine levels were significantly higher in VMM students than in non-VMM students (P = 0.032). Furthermore, a multivariable logistic regression analysis showed that a high urinary cotinine level (>10 ng/mg creatinine; 13.5 percentile) was associated with the development of VMM. Our findings suggest that a high level of ETS exposure may be associated with an increased risk of VMM in a population with attenuated vaccine induced immunity against measles.
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Affiliation(s)
- Shuichi Suzuki
- Department of Pediatrics, Shimoshizu National Hospital, Yotsukaido, Japan
| | - Kazuki Sato
- Department of Pediatrics, Shimoshizu National Hospital, Yotsukaido, Japan
| | - Hiroko Watanabe
- Department of Pediatrics, Shimoshizu National Hospital, Yotsukaido, Japan
| | - Yoko Nezu
- Department of Pediatrics, Shimoshizu National Hospital, Yotsukaido, Japan
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Hamasaki Y, Kohno Y, Ebisawa M, Kondo N, Nishima S, Nishimuta T, Morikawa A, Aihara Y, Akasawa A, Adachi Y, Arakawa H, Ikebe T, Ichikawa K, Inoue T, Iwata T, Urisu A, Ohya Y, Okada K, Odajima H, Katsunuma T, Kameda M, Kurihara K, Sakamoto T, Shimojo N, Suehiro Y, Tokuyama K, Nambu M, Fujisawa T, Matsui T, Matsubara T, Mayumi M, Mochizuki H, Yamaguchi K, Yoshihara S. Japanese pediatric guideline for the treatment and management of bronchial asthma 2012. Pediatr Int 2014; 56:441-50. [PMID: 25252046 DOI: 10.1111/ped.12389] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 05/01/2014] [Indexed: 11/30/2022]
Abstract
A new version of the Japanese pediatric guideline for the treatment and management of bronchial asthma was published in Japanese at the end of 2011. The guideline sets the pragmatic goal for clinicians treating childhood asthma as maintaining a "well-controlled level" for an extended period in which the child patient can lead a trouble-free daily life, not forgetting the ultimate goal of obtaining remission and/or cure. Important factors in the attainment of the pragmatic goal are: (i) appropriate use of anti-inflammatory drugs; (ii) elimination of environmental risk factors; and (iii) educational and enlightening activities for the patient and caregivers regarding adequate asthma management in daily life. The well-controlled level refers to a symptom-free state in which no transient coughs, wheezing, dyspnea or other symptoms associated with bronchial asthma are present, even for a short period of time. As was the case in the previous versions of the guideline, asthmatic children younger than 2 years of age are defined as infantile asthma patients. Special attention is paid to these patients in the new guideline: they often have rapid exacerbation and easily present chronic asthmatic conditions after the disease is established.
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Affiliation(s)
- Yuhei Hamasaki
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan; Japanese Society of Pediatric Allergy and Clinical Immunology, Gifu, Japan
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Takeuchi K, Mashimo Y, Shimojo N, Arima T, Inoue Y, Morita Y, Sato K, Suzuki S, Nishimuta T, Watanabe H, Hoshioka A, Tomiita M, Yamaide A, Watanabe M, Okamoto Y, Kohno Y, Hata A, Suzuki Y. Functional variants in the thromboxane A2 receptor gene are associated with lung function in childhood-onset asthma. Clin Exp Allergy 2013; 43:413-24. [PMID: 23517037 DOI: 10.1111/cea.12058] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 09/24/2012] [Accepted: 10/25/2012] [Indexed: 12/14/2022]
Abstract
BACKGROUND The thromboxane A2 receptor (TBXA2R) gene is associated with asthma, but no functional genetic variations are known to associate with the disease or its related phenotypes. OBJECTIVE To investigate the association of TBXA2R polymorphisms with asthma susceptibility and related phenotypes and to identify functionally relevant polymorphisms. METHODS We performed comprehensive sequencing of the TBXA2R gene in 48 Japanese control subjects and found a set of variants (SNP1 G>T rs2238634, SNP2 T>G rs2238633, SNP3 C>T rs2238632 and SNP4 G>A rs2238631) in intron 1 in linkage disequilibrium with c.795 T>C rs1131882, which was previously reported to be associated with asthma and related phenotypes. To investigate the effect of four common haplotypes (H1, H2, H3 and H4) on transcriptional activity, we performed a luciferase assay in primary bronchial smooth muscle cells (BSMCs) and human airway epithelial cells (BEAS-2B). We also studied the haplotype association with lung function, TBXA2R mRNA levels, and eosinophil fraction/count in peripheral blood in childhood-onset asthma patients and/or controls. RESULTS H2 and H4, containing minor alleles of SNP2 and SNP3, had significantly higher transcriptional activities than H1 consisting of major alleles (P < 0.001 in BSMCs and BEAS-2B). Homozygotes for redefined haplotype h2 corresponding to minor alleles of SNP2 and SNP3 were associated with lower lung function in childhood-onset asthma patients compared to other zygotes (baseline Forced expiratory volume in one second (FEV1)/ Forced vital capacity (FVC) and Forced expiratory flow between 25% and 75% of the FVC (%FEF(25-75%)): P = 0.00201 and 0.0128, respectively, and post-bronchodilator FEV1/FVC and %FEF(25-75%): P = 0.00224 and 0.0393 respectively). Haplotype h2 was also associated with higher mRNA levels in control peripheral blood cells and higher blood eosinophil fractions and counts in female controls. CONCLUSIONS AND CLINICAL RELEVANCE Genetic variants were identified in the TBXA2R gene that influenced transcriptional activity and were associated with asthma-related phenotypes. Thromboxane pathways may therefore play important roles in airway inflammation and remodelling in asthma patients.
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Affiliation(s)
- K Takeuchi
- Department of Public Health, Graduate School of Medicine, Chiba University, Chiba, Japan
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Yamaide F, Undarmaa S, Mashimo Y, Shimojo N, Arima T, Morita Y, Hirota T, Fujita K, Miyatake A, Doi S, Sato K, Suzuki S, Nishimuta T, Watanabe H, Hoshioka A, Tomiita M, Yamaide A, Watanabe M, Okamoto Y, Kohno Y, Tamari M, Hata A, Suzuki Y. Association study of matrix metalloproteinase-12 gene polymorphisms and asthma in a Japanese population. Int Arch Allergy Immunol 2012; 160:287-96. [PMID: 23075521 DOI: 10.1159/000341672] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Accepted: 07/06/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Matrix metalloproteinase 12 gene (MMP12) has been shown to be associated with asthma in a Caucasian population. In this study, we investigate whether single-nucleotide polymorphisms (SNPs) of MMP12 are associated with a risk for asthma in a Japanese population. METHODS We tested for an association between SNPs in MMP12 and asthma, including its severity, in a Japanese population (630 pediatric and 417 adult patients with atopic asthma and 336 children and 632 adults as controls). The rs652438 A and G variants (N357S) were generated by site-directed mutagenesis and an assay with artificial peptide substrates was used to compare two types of MMP12 activity. The effect of MMP12 inhibition with MMP12-specific small interfering RNA (siRNA) on chemokine secretion from airway epithelial cells was also tested in vitro. RESULTS N357S showed a p value <0.05 for childhood and combined (adult plus childhood) asthma in the dominant model [odds ratio (OR) 1.60, 95% confidence interval (CI) 1.00-2.56, p = 0.047; OR 1.40, 95% CI 1.04-1.89, p = 0.028, respectively]. This risk variant is associated with asthma severity in adult patients. In the functional assay, the minor-allele enzyme showed significantly lower activity than the major-allele enzyme. MMP12-specific siRNA suppressed IP-10 secretion from airway epithelial cells upon stimulation with IFN-β. CONCLUSIONS Our results suggest that MMP12 confers susceptibility to asthma and is associated with asthma severity in a Japanese population. MMP12 may be associated with asthma through inappropriate attraction of leukocytes to the inflamed tissue.
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Affiliation(s)
- Fumiya Yamaide
- Department of Public Health, Graduate School of Medicine, Chiba University, Chiba, Japan
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Katsunuma T, Ohya Y, Fujisawa T, Akashi K, Imamura N, Ebisawa M, Daikoku K, Kondo N, Terada A, Doi S, Nishimuta T, Noma T, Hamasaki Y, Kurihara K, Masuda K, Yamada T, Yamada M, Yoshihara S, Watanabe K, Watanabe T, Kitabayashi T, Morikawa A, Nishima S. Effects of the tulobuterol patch on the treatment of acute asthma exacerbations in young children. Allergy Asthma Proc 2012; 33:28-34. [PMID: 29165196 DOI: 10.2500/aap.2012.33.3542] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The tulobuterol patch (TP) is a beta2-adrenergic agonist with a favorable pharmacokinetic profile used for asthma management in Japan. Because it contains tulobuterol in a molecular, crystallized form that is gradually absorbed percutaneously, TP exerts a prolonged bronchodilator effect exceeding 24 hours. Although it is a well-established treatment for asthma and wheezing, few studies have investigated whether it can reduce or prevent the symptoms associated with upper respiratory tract infections (URTIs) in young children. This study evaluated the effect of TP on the long-term management of asthma in young children. In this 1-year, randomized, multicenter, double-blind, placebo-controlled study, children aged 0.5-3 years old with mild-to-moderate persistent asthma were treated with either TP or placebo patch. The parents/guardians applied the TP or placebo patch to their children after URTI symptoms appeared. Respiratory symptoms were recorded daily during the 1-year observation period. Overall, 86 patients were enrolled and 80 were treated and analyzed in this study. All patients had been treated with anti-inflammatory drugs before enrollment. The time to symptom resolution was significantly shorter (p = 0.001) and the total respiratory symptom score (p = 0.0457) was significantly lower in the TP group than in the placebo group. In young children with mild-to-moderate asthma who had been treated with anti-inflammatory drugs, using the TP soon after the appearance of URTI symptoms led to quicker resolution of respiratory symptoms and lower respiratory symptom scores.
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Katsunuma T, Ohya Y, Fujisawa T, Akashi K, Imamura N, Ebisawa M, Daikoku K, Kondo N, Terada A, Doi S, Nishimuta T, Noma T, Hamasaki Y, Kurihara K, Masuda K, Yamada T, Yamada M, Yoshihara S, Watanabe K, Watanabe T, Kitabayashi T, Morikawa A, Nishima S. Effects of the tulobuterol patch on the treatment of acute asthma exacerbations in young children. Allergy Asthma Proc 2012; 33:e28-e34. [PMID: 22737706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The tulobuterol patch (TP) is a beta(2)-adrenergic agonist with a favorable pharmacokinetic profile used for asthma management in Japan. Because it contains tulobuterol in a molecular, crystallized form that is gradually absorbed percutaneously, TP exerts a prolonged bronchodilator effect exceeding 24 hours. Although it is a well-established treatment for asthma and wheezing, few studies have investigated whether it can reduce or prevent the symptoms associated with upper respiratory tract infections (URTIs) in young children. This study evaluated the effect of TP on the long-term management of asthma in young children. In this 1-year, randomized, multicenter, double-blind, placebo-controlled study, children aged 0.5-3 years old with mild-to-moderate persistent asthma were treated with either TP or placebo patch. The parents/guardians applied the TP or placebo patch to their children after URTI symptoms appeared. Respiratory symptoms were recorded daily during the 1-year observation period. Overall, 86 patients were enrolled and 80 were treated and analyzed in this study. All patients had been treated with anti-inflammatory drugs before enrollment. The time to symptom resolution was significantly shorter (p = 0.001) and the total respiratory symptom score (p = 0.0457) was significantly lower in the TP group than in the placebo group. In young children with mild-to-moderate asthma who had been treated with anti-inflammatory drugs, using the TP soon after the appearance of URTI symptoms led to quicker resolution of respiratory symptoms and lower respiratory symptom scores.
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Yamazaki S, Shima M, Ando M, Nitta H, Watanabe H, Nishimuta T. Effect of hourly concentration of particulate matter on peak expiratory flow in hospitalized children: a panel study. Environ Health 2011; 10:15. [PMID: 21392385 PMCID: PMC3061887 DOI: 10.1186/1476-069x-10-15] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Accepted: 03/10/2011] [Indexed: 05/23/2023]
Abstract
BACKGROUND Little information is available on the possible association between hourly short-term air pollution and peak expiratory flow (PEF) in asthmatic children. METHODS PEF was measured twice daily, from October through December, 2000, in 17 children aged 8 to 15 years hospitalized with severe asthma. A total of 1198 PEF measurements were made at 7 a.m. and 1175 at 7 p.m. Measurements were conducted immediately prior to medication under the guidance of trained nurses. PEF changes were estimated in 10-μg/m3 increments of particulate matter with a 50% cut-off aerodynamic diameter of ≤2.5 μm (PM2.5), with adjustment for sex, age, height, and temperature. Lagged-hour exposures of up to 24 hours were examined. RESULTS Increased 24-hour mean concentration of PM2.5 was associated with a decrease in both morning and evening PEF (-3.0 l/minute; 95%CI: -4.6, -1.4 and -4.4 l/minute; 95%CI: -7.1, -1.7, respectively). In addition, hourly concentrations of PM2.5 and PEF showed a significant association between some lags of PM2.5 and PEF. Effect size was almost -3 l/minute in both morning and evening PEF for an hourly PM2.5 concentration of 10 μg/m3 in several lags. Even after adjustment for other air pollutants, some of the significant associations with PEF remained. CONCLUSION Among hospitalized children with severe asthma, increased hourly concentration of PM2.5 was associated with a decrease in PEF.
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Affiliation(s)
- Shin Yamazaki
- Department of Epidemiology and Healthcare Research, Kyoto University School of Public Health, Yoshidakonoe-cho, Sakyo-ku, Kyoto, Japan
| | - Masayuki Shima
- Department of Public Health, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Japan
| | - Michiko Ando
- Department of Respirology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, Japan
| | - Hiroshi Nitta
- Environmental Health Science Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Japan
| | - Hiroko Watanabe
- Department of Pediatrics, Shimoshizu National Hospital, 934-5 Shikawatashi, Yotsukaido, Japan
| | - Toshiyuki Nishimuta
- Department of Pediatrics, Shimoshizu National Hospital, 934-5 Shikawatashi, Yotsukaido, Japan
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13
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Ohta K, Yamaguchi M, Akiyama K, Adachi M, Ichinose M, Takahashi K, Nishimuta T, Morikawa A, Nishima S. Japanese guideline for adult asthma. Allergol Int 2011; 60:115-45. [PMID: 21636963 DOI: 10.2332/allergolint.11-rai-0327] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Indexed: 12/12/2022] Open
Abstract
Adult bronchial asthma (hereinafter, asthma) is characterized by chronic airway inflammation, reversible airway narrowing, and airway hyperresponsiveness. Long-standing asthma induces airway remodeling to cause an intractable asthma. The number of patients with asthma has increased, while the number of patients who die from asthma has decreased (1.7 per 100,000 patients in 2009). The aim of asthma treatment is to enable patients with asthma to lead a healthy life without any symptoms. A partnership between physicians and patients is indispensable for appropriate treatment. Long-term management with agents and elimination of causes and risk factors are fundamental to asthma treatment. Four steps in pharmacotherapy differentiate mild to intensive treatments; each step includes an appropriate daily dose of an inhaled corticosteroid (ICS), varying from low to high doses. Long-acting β(2) agonists (LABA), leukotriene receptor antagonists, and theophylline sustained-release preparation are recommended as concomitant drugs, while anti-IgE antibody therapy is a new choice for the most severe and persistent asthma. Inhaled β(2) agonists, aminophylline, corticosteroids, adrenaline, oxygen therapy, etc., are used as needed against acute exacerbations. Allergic rhinitis, chronic obstructive pulmonary disease (COPD), aspirin induced asthma, pregnancy, and cough variant asthma are also important factors that need to be considered.
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Affiliation(s)
- Ken Ohta
- Division of Respiratory Medicine and Allergology, Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan. −u.ac.jp
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14
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Abstract
The Japanese Guideline for the Diagnosis and Treatment of Allergic Diseases 2010 (JAGL 2010) describes childhood asthma based on the Japanese Pediatric Guideline for the Treatment and Management of Asthma 2008 (JPGL 2008) published by the Japanese Society of Pediatric Allergy and Clinical Immunology. JAGL 2010 provides information on diagnosis by age groups from infancy to puberty, treatment for acute exacerbations, long-term management by medication, daily life guidance, and patient education to allow physicians, not specialized in childhood asthma, to refer to this guideline for routine medical treatment. JAGL differs from the Global Initiative for Asthma Guideline (GINA) in that the former emphasizes long-term management of childhood asthma based on asthma severity and early diagnosis and intervention at <2 years and 2-5 years of age. However, a management method, including step-up or step-down of long-term management agents based on the status of asthma symptoms, is easy to understand and thus JAGL is suitable for routine medical treatment. JAGL also introduced treatment and management using a control test for children, recommending treatment and management aimed at complete control through avoiding exacerbation factors and appropriate use of antiinflammatory agents.
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Affiliation(s)
- Toshiyuki Nishimuta
- Department of Pediatrics, National Hospital Organization Shimoshizu National Hospital, Chiba, Japan.
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15
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Kondo N, Nishimuta T, Nishima S, Morikawa A, Aihara Y, Akasaka T, Akasawa A, Adachi Y, Arakawa H, Ikarashi T, Ikebe T, Inoue T, Iwata T, Urisu A, Ebisawa M, Ohya Y, Okada K, Odajima H, Katsunuma T, Kameda M, Kurihara K, Kohno Y, Sakamoto T, Shimojo N, Suehiro Y, Tokuyama K, Nambu M, Hamasaki Y, Fujisawa T, Matsui T, Matsubara T, Mayumi M, Mukoyama T, Mochizuki H, Yamaguchi K, Yoshihara S. Japanese pediatric guidelines for the treatment and management of bronchial asthma 2008. Pediatr Int 2010; 52:319-26. [PMID: 19968817 DOI: 10.1111/j.1442-200x.2009.03010.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Abstract The fourth version of the Japanese Pediatric Guidelines for the Treatment and Management of Bronchial Asthma 2008 (JPGL 2008) was published by the Japanese Society of Pediatric Allergy and Clinical Immunology in December 2008. In JPGL 2008, the recommendations were revised on the basis of the JPGL 2005. The JPGL 2008 is different to the Global Initiative for Asthma guideline in that it contains the following items: a classification system of asthma severity; recommendations for long-term management organized by age; a special mention of infantile asthma; and an emphasis on prevention and early intervention. Here we show a summary of the JPGL 2008 revising our previous report concerning JPGL 2005.
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Affiliation(s)
- Naomi Kondo
- Department of Pediatrics, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu 501-1194, Japan.
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16
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Ma L, Shima M, Yoda Y, Yamamoto H, Nakai S, Tamura K, Nitta H, Watanabe H, Nishimuta T. Effects of airborne particulate matter on respiratory morbidity in asthmatic children. J Epidemiol 2008; 18:97-110. [PMID: 18490839 PMCID: PMC4771604 DOI: 10.2188/jea.je2007432] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background The effects of airborne particulate matter (PM) are a major human health concern. In this panel study, we evaluated the acute effects of exposure to PM on peak expiratory flow (PEF) and wheezing in children. Methods Daily PEF and wheezing were examined in 19 asthmatic children who were hospitalized in a suburban city in Japan for approximately 5 months. The concentrations of PM less than 2.5 µm in diameter (PM2.5) were monitored at a monitoring station proximal to the hospital. Moreover, PM2.5 concentrations inside and outside the hospital were measured using the dust monitor with a laser diode (PM2.5(LD)). The changes in PEF and wheezing associated with PM concentration were analyzed. Results The changes in PEF in the morning and evening were significantly associated with increases in the average concentration of indoor PM2.5(LD) 24 h prior to measurement (-2.86 L/min [95%CI: -4.12, -1.61] and -3.59 L/min [95%CI: -4.99, -2.20] respectively, for 10-µg/m3 increases). The change in PEF was also significantly associated with outdoor PM2.5(LD) concentrations, but the changes were smaller than those observed for indoor PM2.5(LD). Changes in PEF and concentration of stationary-site PM2.5 were not associated. The prevalence of wheezing in the morning and evening were also significantly associated with indoor PM2.5(LD) concentrations (odds ratios = 1.014 [95%CI: 1.006, 1.023] and 1.025 [95%CI: 1.013, 1.038] respectively, for 10-µg/m3 increases). Wheezing in the evening was significantly associated with outdoor PM2.5(LD) concentration. The effects of indoor and outdoor PM2.5(LD) remained significant even after adjusting for ambient nitrogen dioxide concentrations. Conclusion Indoor and outdoor PM2.5(LD) concentrations were associated with PEF and wheezing among asthmatic children. Indoor PM2.5(LD) had a more marked effect than outdoor PM2.5(LD) or stationary-site PM2.5.
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Affiliation(s)
- Lu Ma
- Department of Public Health, Hyogo College of Medicine, Japan
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17
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Nishimuta T. [One point message of JGL2006 (children)--level of severity and control]. Arerugi 2008; 57:508-512. [PMID: 18520170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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18
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Aoyagi M, Kojima H, Sato K, Watanabe H, Sekine K, Nishimuta T. [Additive effect of intravenous prednisolone for acute severe asthma in infants and toddlers: a randomized controlled clinical trial]. Arerugi 2005; 54:1190-6. [PMID: 16407665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/12/2005] [Accepted: 05/27/2005] [Indexed: 05/06/2023]
Abstract
BACKGROUND The efficacy of systemic corticosteroids for infants and toddlers with acute severe asthma has been inadequately evaluated. OBJECTIVE The purpose of this study was to evaluate the additive efficacy of intravenous prednisolone in a randomized controlled study in the management of infants and toddlers with acute severe asthma. METHODS Sixty-two patients (aged 8 to 70 months) hospitalized with status asthmaticus were studied. They were randomized into two groups. One group received intravenous prednisolone treatment (1 approximately 3 mg/kg/day, 3 days); the other group served as a control. Each group received continuous aminophylline infusion and low-dose continuous isoproterenol inhalation by an Inspiron nebulizer. They were monitored their heart rate, respiratory rate and symptoms (Wood's clinical score). RESULTS Each group showed rapid improvement in heart rate, respiratory rate and clinical score by low-dose continuous isoproterenol inhalation. There were no significant differences in the time course of these clinical indexes or the duration of aminophylline infusion, continuous isoproterenol inhalation and hospital stay. CONCLUSION This study failed to confirm the additive benefit of intravenous prednisolone in the management of infants and toddlers with acute severe asthma.
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Affiliation(s)
- Masahiko Aoyagi
- Department of Pediatrics, National Shimoshizu Hospital, Japan.
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19
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Kojima H, Shimojo N, Tomiita M, Nishimuta T, Kohno Y. The expression level of cutaneous lymphocyte antigen on T-cells as a predictor for the tolerance to hen's egg-induced eczema. Eur J Pediatr 2003; 162:537-538. [PMID: 12733066 DOI: 10.1007/s00431-003-1214-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2002] [Revised: 02/17/2003] [Accepted: 02/25/2003] [Indexed: 12/01/2022]
Affiliation(s)
- Hiroyuki Kojima
- Department of Paediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan.
- Department of Paediatrics, National Shimoshizu Hospital, 934-5 Shikawatashi, Yotsukaido, Chiba, Japan.
| | - Naoki Shimojo
- Department of Paediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Minako Tomiita
- Department of Paediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | | | - Yoichi Kohno
- Department of Paediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
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20
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Abstract
The immunological mechanisms by which respiratory syncytial virus (RSV) contributes to the development of asthma are poorly understood. gammadelta T cells are important in mucosal defence, and may contribute to the establishment of primary immune responses by producing cytokines early during respiratory infections. Thus, we used flow cytometry and intracellular cytokine staining to investigate the expression of interferon (IFN)-gamma and interleukin (IL)-4 by mitogen-stimulated gammadelta T cells from the peripheral blood of 15 hospitalized infants with RSV bronchiolitis, seven rotavirus-infected infants and eight normal controls. gammadelta T cells from RSV-infected infants had a lower proportion of IFN-gamma-producing cells (median, 4.00%; range, 0.58-6.60%) and a slightly but significantly higher proportion of IL-4-producing cells (median, 0.40%; range, 0.13-2.76%) than rotavirus-infected infants (median, 32.10%; range, 14.43-61.21%; P < 0.01, median, 0.00%; range, 0.00-0.00%; P < 0.05) in the acute phase. By contrast, differences in cytokine production by total CD3+ T cells did not differ significantly between patient groups. Thus, reduced IFN-gamma-production by gammadelta T cells in the peripheral blood of RSV-infected infants is accompanied by increased Th2 cytokine production during the acute phase of disease. At follow-up, eight children had recurrent episodes of wheezing. The frequencies of IFN-gamma-producing gammadelta T cells were significantly lower in patients who developed recurrent wheezing (median, 0.65%; range, 0.02-1.75%) than in patients without recurrent wheezing (median, 6.90%; range, 5.25-10.98%; P < 0.005). Cytokine production by gammadelta T cells may therefore be important in the pathogenesis of acute RSV disease, and play a part in the development of recurrent childhood wheezing after bronchilolitis.
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Affiliation(s)
- M Aoyagi
- Department of Paediatrics and Clinical Research, National Shimoshizu Hospital, Yotsukaido, Chiba, Japan.
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21
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Aoyagi M, Watanabe H, Sekine K, Nishimuta T, Konno A, Shimojo N, Kohno Y. Circadian variation in nasal reactivity in children with allergic rhinitis: correlation with the activity of eosinophils and basophilic cells. Int Arch Allergy Immunol 1999; 120 Suppl 1:95-9. [PMID: 10529614 DOI: 10.1159/000053604] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND In allergic rhinitis, the major symptoms of runny nose, sneezing, and stuffy nose tend to become worse upon waking up in the morning, and yet the mechanisms underlying this phenomenon are poorly understood. We investigated whether the worsening of allergic rhinitis in the morning is associated with changes in the activity of inflammatory cells. METHODS Nasal reactivity to methacholine was assessed twice in 8 children with allergic rhinitis and 8 healthy control subjects at 6.00 a.m. and 3.00 p.m. The amounts of eosinophil cationic protein (ECP), histamine and tryptase in induced nasal secretions and peripheral blood were also measured. RESULTS Nasal reactivity to methacholine was higher at 6.00 a.m. not only in patients but also in healthy controls. Serum ECP and plasma histamine levels showed no circadian patterns. On the other hand, significantly higher levels of inflammatory activation products were found in nasal secretions at 6.00 a.m., thus showing a direct association with nasal reactivity. CONCLUSION These results suggest that the circadian variation in nasal reactivity is associated with changes in the activity of eosinophils and basophilic cells in the nasal mucosa.
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Affiliation(s)
- M Aoyagi
- Department of Pediatrics and Clinical Research, National Shimoshizu Hospital, Yotsukaido, Chiba, Japan.
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22
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Kohno Y, Shimojo N, Aoyagi M, Sannomiya Y, Nishimuta T, Kojima H, Katsuki T, Tomiita M, Lazarovits AI, Ringler D, Niimi H. Increased expression of α4β7 integrin on food allergen-stimulated CD4+ T cells in active food allergic enterocolitis. Allergol Int 1998. [DOI: 10.2332/allergolint.47.99] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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23
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Aoyagi M, Shimojo N, Sato Y, Watanabe H, Sekine K, Sannomiya Y, Nishimuta T, Kohno Y, Niimi H. [Flow cytometric analysis for the activation of peripheral immunoregulatory cells from patients with bronchial asthma]. Arerugi 1997; 46:1243-50. [PMID: 9503684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
By use of flow cytometry, we have investigated intracellular activated eosinophil cationic protein (ECP) in eosinophils and mitogen-induced cytokine production of T cells in peripheral blood from children with acute severe asthma. In addition, we measured ECP releasability (serum ECP/lysate ECP) as a maker of activated eosinophils. The monoclonal antibody EG2 (anti-activated ECP/EPX antibody) was used for measuring the amount of intracellular activated ECP. ECP releasability and mean fluorescence intensity (MFI) values of EG2-positive eosinophils increased at the time of asthmatic attack and reduced after treatment with improvement in peak expiratory flow. Furthermore, the frequency of T cells which produced IL-4, IL-5 and IFN-gamma stimulated with phorbol myristate acetate and ionomycin increased and reduced in parallel with MFI of EG2-positive cells. These observations suggest that flow cytometric analysis for intracellular ECP and mitogen-induced cytokine production reflects the activation of T cells in bronchial mucosa, and is useful for monitoring airway inflammation in bronchial asthma.
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Affiliation(s)
- M Aoyagi
- Department of Pediatrics and Clinical Research. National Shimoshizu Hospital
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24
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Honma K, Aoyagi M, Saito K, Nishimuta T, Sugimoto K, Tsunoo H, Niimi H, Kohno Y. [Antigenic determinants on ovalbumin and ovomucoid: comparison of the specificity of IgG and IgE antibodies]. Arerugi 1991; 40:1167-75. [PMID: 1720303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
To delineate the antigenic determinants on ovalbumin (OA) and ovomucoid (OVM) recognized by specific IgG and IgE antibodies in sera from patients with allergy to hen's egg, we studied the binding activities of IgG and IgE antibodies to native OA or OVM and seven different OA or OVM preparations, i.e. heated OA or OVM (100 degrees C for 3 min and 80 degrees C for 30 min) or 0.3 M NaOH, dithiothreitol (DTT), sodium dodecyl sulfate (SDS), 6 M urea or HCl treated OA or OVM. Eight patients with IgE anti-OA antibodies and 12 patients with IgE anti-OVM antibodies were used in these studies. The binding activities of IgG and IgE antibodies to physically or chemically denatured OA were partially decreased compared with those to native OA, whereas IgG and IgE antibodies in sera from patients bound well to denatured OVM with similar binding activities to native OVM. These results strongly suggest that antibodies to OA recognize partially conformational antigenic determinants on OA, whereas antibodies to OVM mainly recognize sequential antigenic determinants on OVM, and that antigenic determinants of OVM recognized by antibodies in sera from patients are more stable than those of OA under these denaturation conditions. In addition, the binding activities of IgE antibodies to denatured OA or OVM were significantly different from those of IgG antibodies to these OA or OVM, suggesting that the specificities of IgE antibodies to OA or OVM may be different from those of IgG antibodies to OA or OVM.
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Affiliation(s)
- K Honma
- Department of Pediatrics, Chiba University School of Medicine
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25
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Abstract
I would like to introduce institutional therapy, a special therapeutic method used in our country for severe bronchial asthmatic children. Institutional therapy is mainly being used in national and municipal medical facilities. Approximately 2,300 patients receive this treatment yearly. Of the 158 patients who received this treatment in our institution in the past 4 years, 56.3% of them are leading normal lives after hospital discharge. Comparing those with a good prognosis to those with a bad prognosis, the time from onset of the serious stage to hospitalization is shorter and EIA levels are increased in the former group. Adequate amounts of physical training are effective in improving the patients' functional abilities and promoting confidence; therefore this therapy is highly effective.
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Affiliation(s)
- T Nishimuta
- Department of Pediatrics, Shimoshizu National Hospital, Chiba, Japan
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26
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Toba T, Nishimuta T, Funabashi S, Adachi M. [Serum protein levels in healthy Japanese children, with special regard to 5 classes of immunoglobulin (author's transl)]. Rinsho Byori 1975; 23:763-9. [PMID: 1240489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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27
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Kashida Y, Saito M, Ogi S, Nishimuta T, Kaibara S. [Symposium: mass screening system]. Iyodenshi To Seitai Kogaku 1972; 10:294. [PMID: 4565295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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