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| Registros recuperados: 37 | |
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| Mayr,S.I.; Zuberi,R.I.; Liu,F.-T.. |
| Immunoglobulin E (IgE) and mast cells are believed to play important roles in allergic inflammation. However, their contributions to the pathogenesis of human asthma have not been clearly established. Significant progress has been made recently in our understanding of airway inflammation and airway hyperresponsiveness through studies of murine models of asthma and genetically engineered mice. Some of the studies have provided significant insights into the role of IgE and mast cells in the allergic airway response. In these models mice are immunized systemically with soluble protein antigens and then receive an antigen challenge through the airways. Bronchoalveolar lavage fluid from mice with allergic airway inflammation contains significant amounts of IgE.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asthma; IgE; Mast cells; Airway hyperresponsiveness. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000700001 |
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| Sarinho,E.; Schor,D.; Veloso,M.A.; Rizzo,J.A.. |
| Although asthma has been commonly associated with sensitivity to cockroaches, a clear causal relationship between asthma, allergy to cockroaches and exposure levels has not been extensively investigated. The objective of the present study was to determine whether asthma occurs more frequently in children living in homes with high cockroach infestation. The intensity of household infestation was assessed by the number of dead insects after professional pesticide application. Children living in these houses in the metropolitan area of Recife, PE, were diagnosed as having asthma by means of a questionnaire based on the ISAAC study. All children had physician-diagnosed asthma and at least one acute exacerbation in the past year. Children of both sexes aged 4... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cockroaches; Asthma; Atopy; Public health; Plague control. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000400007 |
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| Marçal,L.E.; Rehder,J.; Newburger,P.E.; Condino-Neto,A.. |
| Asthma is an inflammatory condition characterized by the involvement of several mediators, including reactive oxygen species. The aim of the present study was to investigate the superoxide release and cellular glutathione peroxidase (cGPx) activity in peripheral blood granulocytes and monocytes from children and adolescents with atopic asthma. Forty-four patients were selected and classified as having intermittent or persistent asthma (mild, moderate or severe). The spontaneous or phorbol myristate acetate (PMA, 30 nM)-induced superoxide release by granulocytes and monocytes was determined at 0, 5, 15, and 25 min. cGPx activity was assayed spectrophotometrically. The spontaneous superoxide release by granulocytes from patients with mild (N = 15), moderate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Children; Asthma; Respiratory burst; Granulocytes; Monocytes; Inflammation. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004001100003 |
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| Santos,L.A.; Oliveira,M.A.; Faresin,S.M.; Santoro,I.L.; Fernandes,A.L.G.. |
| Asthma is a common chronic illness that imposes a heavy burden on all aspects of the patient's life, including personal and health care cost expenditures. To analyze the direct cost associated to uncontrolled asthma patients, a cross-sectional study was conducted to determine costs related to patients with uncontrolled and controlled asthma. Uncontrolled patient was defined by daytime symptoms more than twice a week or nocturnal symptoms during two consecutive nights or any limitations of activities, or need for relief rescue medication more than twice a week, and an ACQ score less than 2 points. A questionnaire about direct cost stratification in health services, including emergency room visits, hospitalization, ambulatory visits, and asthma medications... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asthma; Health care costs; Health economy; Health care resources. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000700008 |
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| Silva,C.S.; Torres,L.A.G.M.M.; Rahal,A.; Terra Filho,J.; Vianna,E.O.. |
| Fitness improvement was used to compare morning with afternoon exercise periods for asthmatic children. Children with persistent moderate asthma (according to GINA criteria), 8 to 11 years old, were divided into 3 groups: morning training group (N = 23), afternoon training group (N = 23), and non-training group (N = 23). The program was based on twice a week 90-min sessions for 4 months. We measured the 9-min running distance, resting heart rate and abdominal muscle strength (sit-up number) before and after the training. All children took budesonide, 400 µg/day, and an on demand inhaled ß-agonist. The distance covered in 9 min increased (mean ± SEM) from 1344 ± 30 m by 248 ± 30 m for the morning group, from 1327 ± 30 m by 162 ± 20 m for the afternoon... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asthma; Children; Chronotherapy; Exercise training; Circadian rhythm; Exercise-induced bronchospasm. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000100008 |
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| Liu,L.-L.; Li,F.-H.; Zhang,Y.; Zhang,X.-F.; Yang,J.. |
| Asthma is a chronic allergic disease characterized by airway inflammation, airway hyper-responsiveness (AHR), and mucus hypersecretion. T-lymphocytes are involved in the pathogenesis of asthma, mediating airway inflammatory reactions by secreting cytokines. The phosphoinositide 3-kinase (PI3K) and Notch signaling pathways are associated with T cell signaling, proliferation, and differentiation, and are important in the progression of asthma. Thus, compounds that can modulate T cell proliferation and function may be of clinical value. Here, we assessed the effects of tangeretin, a plant-derived flavonoid, in experimental asthma. BALB/c mice at postnatal day (P) 12 were challenged with ovalbumin (OVA). Separate groups of mice (n=18/group) were administered... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asthma; Inflammation; Notch signaling; PI3K; Tangeretin; T-helper cells. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800612 |
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| Chen,Wenli; Cui,Jiewei; Xiang,Guoan; Zhang,Jianpeng; Gao,Hongmei. |
| The published data on the association between MCP-1 -2518A>G polymorphism and asthma susceptibility are inconclusive. Therefore, we performed a meta-analysis to estimate the impact of MCP-1 -2518A>G polymorphism on asthma susceptibility. PubMed, Web of Science, Wanfang, and China National Knowledge Infrastructure (CNKI) databases were used to identify eligible studies. The pooled odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were used to calculate the strength of association. Sensitivity analysis was performed to evaluate the influence of individual studies on the estimates of overall effect, and funnel plots and Egger's test were used to assess publication bias. Eight publications with 1562 asthma patients and 1574 controls were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: MCP-1; Polymorphism; Asthma; Susceptibility; Meta-analysis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019001100602 |
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| Durigan,J.L.Q.; Peviani,S.M.; Russo,T.L.; Silva,A.C.D.; Vieira,R.P.; Martins,M.A.; Carvalho,C.R.F.; Salvini,T.F.. |
| We evaluated the effects of chronic allergic airway inflammation and of treadmill training (12 weeks) of low and moderate intensity on muscle fiber cross-sectional area and mRNA levels of atrogin-1 and MuRF1 in the mouse tibialis anterior muscle. Six 4-month-old male BALB/c mice (28.5 ± 0.8 g) per group were examined: 1) control, non-sensitized and non-trained (C); 2) ovalbumin sensitized (OA, 20 µg per mouse); 3) non-sensitized and trained at 50% maximum speed _ low intensity (PT50%); 4) non-sensitized and trained at 75% maximum speed _ moderate intensity (PT75%); 5) OA-sensitized and trained at 50% (OA+PT50%), 6) OA-sensitized and trained at 75% (OA+PT75%). There was no difference in muscle fiber cross-sectional area among groups and no difference in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exercise training; Muscle atrophy; Asthma; Gene expression; Mice. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000400005 |
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| Dalcin,P.T.R.; Piovesan,D.M.; Kang,S.; Fernandes,A.K.; Franciscatto,E.; Millan,T.; Hoffmann,C.; Innocente,C.; Pereira,R.P.; Menna Barreto,S.S.. |
| It is important to identify characteristics related to poor disease control and frequent visits to the emergency department (ED). The objective of the present study was to compare the characteristics of patients attending the adult ED for treatment of asthma exacerbation with those attending an asthma specialist clinic (AC) in the same hospital, and to determine the factors associated with frequent visits to the ED. We conducted a cross-sectional survey of consecutive patients (12 years and older) attending the ED (N = 86) and the AC (N = 86). Significantly more ED patients than AC patients reported ED visits in the past year (95.3 vs 48.8%; P < 0.001) and had difficulty performing work (81.4 vs 49.4%; P < 0.001. Significantly more AC than ED patents... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asthma; Acute exacerbation; Emergency medicine; Emergency room visits. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000900007 |
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| Campos,H.S.; Xisto,D.G.; Oliveira,M.B.G.; Teixeira,I.; Negri,E.M.; Mauad,T.; Carnielli,D.; Lima,L.M.; Barreiro,E.J.; Faffe,D.S.; Zin,W.A.; Lapa e Silva,J.R.; Rocco,P.R.M.. |
| The aim of the present study was to compare the efficacy of a novel phosphodiesterase 4 and 5 inhibitor, LASSBio596, with that of dexamethasone in a murine model of chronic asthma. Lung mechanics (airway resistance, viscoelastic pressure, and static elastance), histology, and airway and lung parenchyma remodeling (quantitative analysis of collagen and elastic fiber) were analyzed. Thirty-three BALB/c mice were randomly assigned to four groups. In the asthma group (N = 9), mice were immunized with 10 µg ovalbumin (OVA, ip) on 7 alternate days, and after day 40 they were challenged with three intratracheal instillations of 20 µg OVA at 3-day intervals. Control mice (N = 8) received saline under the same protocol. In the dexamethasone (N = 8) and LASSBio596... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Asthma; Lung function; Steroid; Phosphodiesterase inhibitors; BALB/c mice. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000200016 |
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| Ramphul,K.; Lv,J.; Hua,L.; Liu,Q.H.; Fang,D.Z.; Ji,R.X.; Bao,Y.X.. |
| Our objective was to investigate the distributions of six single nucleotide polymorphisms (SNPs) MS4A2 E237G, MS4A2 C-109T, ADRB2 R16G, IL4RA I75V,IL4 C-590T, and IL13 C1923T in Mauritian Indian and Chinese Han children with asthma. This case-control association study enrolled 382 unrelated Mauritian Indian children, 193 with asthma and 189 healthy controls, and 384 unrelated Chinese Han children, 192 with asthma and 192 healthy controls. The SNP loci were genotyped using polymerase chain reaction (PCR)-restriction fragment length polymorphism for the Chinese Han samples and TaqMan real-time quantitative PCR for the Mauritian Indian samples. In the Mauritian Indian children, there was a significant difference in the distribution of IL13 C1923T between the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asthma; Single nucleotide polymorphisms; Mauritian Indian; Chinese Han. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000500394 |
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| Rêgo,Moacyr Jesus Barreto de Melo; Azoubel-Antunes,Adriana; Bezerra,Mariana Brayner-Cavalcanti Freire; Pereira,Michelly Cristiny; Silva,Juliana Cruz da; Lins,Thiago Ubiratan Lins e; Sarinho,Emanuel Sávio Cavalcanti; Amorim,Cézar Augusto da Cruz; Lima,Maria do Carmo Alves de; Galdino-Pitta,Marina Rocha; Pitta,Ivan da Rocha; Pitta,Maira Galdino da Rocha. |
| Allergic asthma is a chronic, complex inflammatory disease of the airway. Despite extensive studies on the immunomodulation of T helper (Th) cell pathways (i.e., Th1 and Th2) in asthma, little is known about the effects of Th17 pathway modulation, particularly that involving peroxisome proliferator-activated receptors (PPARs). In response, two new thiazolidinedione derivatives-namely, LPSF-GQ-147 and LPSF-CR-35 were synthesized and evaluated for their immunomodulatory effects on Th17-related cytokines, including interferon γ (IFNγ), interleukin IL-6, IL-17, and IL-22 in the peripheral blood mononuclear cells of asthmatic children. Both compounds were nontoxic even at high concentrations (i.e., 100 µM). The LPSF-CR-35 compound significantly reduced the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asthma; Th17-related cytokines; Thiazolidinedione derivative. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502018000300602 |
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| Registros recuperados: 37 | |
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