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1.
Yonsei Med J ; 61(9): 797-804, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32882764

RESUMO

PURPOSE: Climate and lifestyle changes increase an individual's susceptibility to various allergens and also the incidence of allergic diseases. We aimed to examine the changes in sensitization rate for aeroallergens over a 10-year period in Korean children. MATERIALS AND METHODS: We retrospectively reviewed the medical records of 4493 children who visited the allergy clinic at a tertiary hospital in Korea for allergic rhinitis or asthma from January 2009 to December 2018. The serum specific immunoglobulin E (IgE) levels were measured to confirm the sensitization against Dermatophagoides farinae (D. farinae), Alternaria, weed and tree pollen mixtures, as well as cat and dog dander through ImmunoCAP test. RESULTS: D. farinae was the most common sensitizing aeroallergen (45.9%) during the 10-year span. The sensitization rate for tree pollen mixture (p for trend <0.001), weed pollen mixtures (p for trend <0.001), dog dander (p for trend=0.025), and cat dander (p for trend=0.003) showed ascending trends during the 10-year study period. Furthermore, the sensitization rate for multiple allergens (≥2) in 2018 increased significantly compared to that in 2009 (p for trend=0.013). Compared with children without sensitization to D. farinae, those with sensitization to D. farinae showed higher sensitization rates to other aeroallergens (p for interaction <0.001). CONCLUSION: Children's sensitization rate to cat and dog dander and weed and tree pollen mixtures significantly increased during the 10-year period in Korea. Children with sensitization to D. farinae are likely to be sensitized to other aeroallergens as well.


Assuntos
Alérgenos/imunologia , Asma/imunologia , Hipersensibilidade/diagnóstico , Imunoglobulina E/sangue , Rinite Alérgica/imunologia , Alérgenos/efeitos adversos , Animais , Asma/diagnóstico , Asma/epidemiologia , Gatos , Criança , Dermatophagoides farinae , Cães , Feminino , Humanos , Hipersensibilidade/imunologia , Masculino , Pólen/imunologia , República da Coreia/epidemiologia , Estudos Retrospectivos , Rinite Alérgica/diagnóstico
2.
J UOEH ; 42(3): 275-279, 2020.
Artigo em Japonês | MEDLINE | ID: mdl-32879192

RESUMO

The Japan Environment Health and Children's Study (JECS) is an ongoing cohort study designed to evaluate the impact of various environmental factors on children's health. In this study, more than 100,000 pregnant women were recruited in 15 regional centers throughout Japan. Within the University of Occupational and Environmental Health, the departments of Pediatrics, Obstetrics and Gynecology, Environmental Health, and the School of Health Sciences collaborate with the JECS University of Occupational and Environmental Health Subunit Center in advancing research in this study. Several original articles based on JECS and written by our unit members were published in recent years. The aim of this review is to summarize these studies by JECS and University of Occupational and Environmental Health Subunit Center based on the data from JECS. We introduce research articles covering the following categories; environmental health, occupational health, and maternal and child health. Studies found associations between concentrations of metals and maternal health, such as premature birth, placenta previa and placenta accrete, associations between metals and IgE, dietary differences among occupational groups, associations between work-related factors and dietary behaviors, associations between job changes and pregnancy/delivery, mental and physical stress among pregnant women and influence on work, associations between sleep and gestational diabetes, and associations between an ability to push up in the prone position and infant development. This review may promote the development of new research, such as collaborative research projects, including clinical and social medicine, epidemiological studies and laboratory investigations.


Assuntos
Saúde da Criança , Saúde Ambiental , Saúde do Trabalhador , Universidades , Estudos de Coortes , Diabetes Gestacional , Comportamento Alimentar , Feminino , Humanos , Imunoglobulina E , Japão , Metais/metabolismo , Placenta Acreta , Placenta Prévia , Gravidez , Nascimento Prematuro , Trabalho
3.
J Environ Pathol Toxicol Oncol ; 39(3): 213-224, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32865913

RESUMO

Asthma is a chronic, serious allergic inflammatory disease in the airway. The inflammation in the airway is induced by the allergic T-helper 2 cells (Th2 cells), which leads to unfettered production of inflammatory cytokines. The accretion of inflammatory cells in the airway also speeds up the secretion of reactive oxygen species (ROS) and suppresses antioxidative processes. Hence, the present work aimed to study the antiasthmatic efficacy of betulin and its effect in suppressing the inflammatory markers of ovalbumin (OVA) challenged asthmatic mice. The observed results revealed that the levels of inflammatory cells including neutrophils, eosinophils, lymphocytes, and macrophages were effectively decreased by betulin treatment; furthermore, the inflammatory markers IL-4, IL-5, IL-13, and TNF-α levels were notably suppressed by betulin administration in OVA-challenged asthmatic mice. Similarly, the oral administration of betulin showed a reduction in IgE level and elevation in the IFN-γ level in bronchoalveolar lavage fluid (BALF). The elevated levels of antioxidant enzymes like catalase (CAT), glutathione (GSH), and superoxide dismutase (SOD) were observed in betulin treated mice. Furthermore, reduced levels of reactive oxygen species like NO2, NO3, and MDA were noted in the betulin treated group. Consistently, airway hyperreactivity (AHR) was depleted in the betulin administered group compared with the OVA-challenged asthmatic group. Betulin treatment was revealed to have noteworthy antiasthmatic effects mediated by the suppression of production of inflammatory cells and the expression of other inflammatory markers. Furthermore, the elevation in the level of antioxidant markers helped to disclose the original regulatory mode of betulin on asthma treatment.


Assuntos
Antiasmáticos/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Asma/tratamento farmacológico , Estresse Oxidativo/efeitos dos fármacos , Triterpenos/uso terapêutico , Animais , Antiasmáticos/administração & dosagem , Anti-Inflamatórios/administração & dosagem , Asma/imunologia , Asma/metabolismo , Biomarcadores/análise , Líquido da Lavagem Broncoalveolar/química , Líquido da Lavagem Broncoalveolar/citologia , Líquido da Lavagem Broncoalveolar/imunologia , Modelos Animais de Doenças , Eosinófilos/citologia , Feminino , Imunoglobulina E/sangue , Pulmão/efeitos dos fármacos , Pulmão/patologia , Camundongos , Camundongos Endogâmicos BALB C , Ovalbumina/imunologia , Estresse Oxidativo/imunologia , Espécies Reativas de Oxigênio/metabolismo , Testes de Função Respiratória , Triterpenos/administração & dosagem
4.
J Environ Pathol Toxicol Oncol ; 39(3): 225-234, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32865914

RESUMO

Asthma is marked by chronic irritation in the airway lumen of the lungs due to the accretion of inflammatory cells that influence the regular inhalation process. An extended buildup of inflammation leads to oxidative pressure and the repression of antioxidant functions. In the current study, a potential compound, boldine, was tested for the containment of provocative markers along the path of antiasthmatic activity in an ovalbumin (OVA)-induced asthmatic mice model. As an effect, the boldine (10 and 20 mg/kg) treatment suppressed inflammatory cells such as eosinophil, macrophage, neutrophil, lymphocyte, and other inflammatory markers in the bronchoalveolar lavage fluid (BALF) of OVA-induced mice. Likewise, immunoglobulin E (IgE) levels were drastically condensed in the serum of boldine-treated animals. Levels of enzymatic and nonenzymatic antioxidants, such as superoxide dismutase (SOD) and glutathione (GSH), were upregulated in the boldine treatment group compared to the asthmatic control group, which displays the antioxidant effects of boldine on asthmatic animals. Interestingly, the reactive oxygen species (ROS) and malonaldehyde (MDA) levels were repressed in the BALF of boldine-treated mice groups. Therefore, the effects of boldine are significant for the management of asthma, reducing the accrual of inflammatory cells, along with other inflammatory markers, while improving antioxidant markers and containing ROS. Hence, boldine may be an option for clinical trials of chronic asthma management.


Assuntos
Antiasmáticos/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Antioxidantes/metabolismo , Aporfinas/uso terapêutico , Asma/tratamento farmacológico , Animais , Antiasmáticos/administração & dosagem , Anti-Inflamatórios/administração & dosagem , Aporfinas/administração & dosagem , Asma/imunologia , Biomarcadores/análise , Líquido da Lavagem Broncoalveolar/química , Líquido da Lavagem Broncoalveolar/citologia , Líquido da Lavagem Broncoalveolar/imunologia , Citocinas/análise , Modelos Animais de Doenças , Eosinófilos/citologia , Imunoglobulina E/sangue , Pulmão/efeitos dos fármacos , Pulmão/patologia , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Ovalbumina/imunologia , Espécies Reativas de Oxigênio/metabolismo , Testes de Função Respiratória
5.
Medicine (Baltimore) ; 99(30): e21183, 2020 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-32791692

RESUMO

INTRODUCTION: Allergic rhinitis (AR) is an immunoglobulin E (Ig E)-mediated inflammatory disease. Intranasal phototherapy is a promising treatment modality because it has a profound immunosuppressive effect, but the evidence of its use for AR is insufficient. Therefore, rigorously designed randomized controlled trials (RCTs) are needed. Our objective is to describe the protocol for an RCT to assess the effects and safety of intranasal phototherapy for the treatment of AR. METHODS AND ANALYSIS: This is a study protocol for a single-center, randomized, parallel (acupuncture-controlled), open-label, investigator-initiated, pilot study. A total of 80 patients with AR will be randomly assigned to the intranasal phototherapy or acupuncture group at a 1:1 ratio. The participants will receive intranasal phototherapy with medical or acupuncture treatment for 20 minutes, 3 times a week for 4 weeks. The primary outcome will be the mean change in the total nasal symptom score (TNSS) from baseline to 4 weeks. The secondary outcomes will include the Rhinoconjunctivitis Quality of Life Questionnaire (RQLQ) score, Nasal Endoscopy Index, total serum immunoglobulin E (Ig E) level and eosinophil count. DISCUSSION: The findings of this study will provide the basis for the design and implementation of RCTs investigating the effects and safety of intranasal phototherapy for AR. Additionally, it will provide preliminary evidence of intranasal phototherapy for use in AR. TRIAL REGISTRATION: This study was registered at the Korean National Clinical Trial Registry, Clinical Research Information Service (KCT0004079).


Assuntos
Eosinófilos , Terapia com Luz de Baixa Intensidade , Rinite Alérgica/terapia , Terapia por Acupuntura , Humanos , Imunoglobulina E/sangue , Contagem de Leucócitos , Terapia com Luz de Baixa Intensidade/efeitos adversos , Cavidade Nasal , Projetos Piloto , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto , Rinite Alérgica/sangue , Índice de Gravidade de Doença , Método Simples-Cego
6.
Medicine (Baltimore) ; 99(30): e21255, 2020 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-32791702

RESUMO

Atopic dermatitis (AD) is a common chronic relapsing inflammatory skin disease associated with a personal or family history of atopic diseases. Determining the objective severity scoring of AD index (SCORAD) and total immunoglobulin E (IgE) to help to stage the severity (lesions extent and intensity of the lesions and then the itch and sleep disturbance they may cause) of AD in children.In this study, we adopted the SCORAD index, which consists of severity, area, and sleep disturbance, to evaluate the AD status of children up to 18 years old. We examined the blood levels of total serum IgE, white blood cell count/differential count (WBC/DC), eosinophil counts (EC), eosinophil cationic protein (ECP) and specific IgE.A total of 208 children with AD were enrolled in this study. Serum IgE values and a number of specific IgE that are positive significantly different SCORAD index through simple linear regression; however, after multiple linear regression, only IgE values (95% CI: 0.001-0.004, P < .001), total WBC count (95% CI: 0.112-1.736, P = .026), EC (95% CI: 0.045-6.706, P = .047), and specific IgE to Cheddar cheese (95% CI: 1.814-16.731, P = .015) remain different. After applying the Phi coefficient, we found that specific IgE to tuna (r = 0.632), codfish (r = 0.613), and clam (r = 0.613) each had a moderate correlation with specific IgE to Cheddar cheese. The 6 most common allergens were found to be mite (D. Farinae: 65.9%), mite (D. Pterony: 64.9%), house dust (47.6%), cockroach mix (37.0%), shrimp (30.8%), and crab (22.6%). Covariates of SCORAD index, severity, area, and sleep disturbance differed.In this study, we found that total IgE values, specific IgE values, WBC, EC, and specific IgE to Cheddar cheese have significant correlations with SCORAD index in AD of Taiwanese children.


Assuntos
Dermatite Atópica/sangue , Hipersensibilidade Alimentar/sangue , Imunoglobulina E/sangue , Alérgenos/sangue , Biomarcadores/sangue , Queijo/efeitos adversos , Criança , Pré-Escolar , Dermatite Atópica/etiologia , Hipersensibilidade Alimentar/complicações , Humanos , Lactente , Contagem de Leucócitos , Índice de Gravidade de Doença , Taiwan
7.
Vestn Otorinolaringol ; 85(3): 52-56, 2020.
Artigo em Russo | MEDLINE | ID: mdl-32628384

RESUMO

OBJECTIVE: To evaluate the role of secretory immunoglobulin E in the differential diagnosis of rhinitis in pregnant women. MATERIAL AND METHODS: The study involved 97 pregnant women with rhinitis symptoms and 23 healthy pregnant women without rhinitis symptoms. The first group of the study included 37 pregnant women with previously confirmed (anamnestically and immunologically) allergic rhinitis (AR), the 2nd group of the study included 30 pregnant women with suspected beginning of the AR, the 3rd group of the study was 30 women with pregnant women's rhinitis, diagnosed on the base of follow-up study. The study included: anamnesis taking, routine examination of ENT organs, general clinical examination, study of the level of total IgE in blood, nasal secretion cytology study, secretory IgE level in nasal secretion analysis, follow-up telephone gathered catamnestic data analysis. RESULTS AND DISCUSSION: When analyzing laboratory data, an increase in the average number of eosinophils in the blood was not detected in any group. When examining secretory immunoglobulin E of the nasal secretion in the group of patients with previously confirmed AR, this indicator averaged 2.9±0.7 kE/L, in the group with AR beginning - 5.5±2.6 kE/L, which exceeded the value in the control group (1.2±0.6 kE/l, p<0.05). In the group of patients with pregnant women's rhinitis, the indices of nasal IgE did not differ significantly from the control group (1.9±0.3 and 1.2±0.6 kE/L, respectively, p<0.05). CONCLUSION: The level of secretory nasal immunoglobulin E can be used in the differential diagnosis of rhinitis in pregnancy.


Assuntos
Rinite Alérgica/diagnóstico , Rinite , Diagnóstico Diferencial , Feminino , Seguimentos , Humanos , Imunoglobulina E , Mucosa Nasal , Gravidez
8.
Proc Natl Acad Sci U S A ; 117(30): 18068-18078, 2020 07 28.
Artigo em Inglês | MEDLINE | ID: mdl-32661165

RESUMO

Mast cells and basophils are main drivers of allergic reactions and anaphylaxis, for which prevalence is rapidly increasing. Activation of these cells leads to a tightly controlled release of inflammatory mediators stored in secretory granules. The release of these granules is dependent on intracellular calcium (Ca2+) signals. Ca2+ release from endolysosomal compartments is mediated via intracellular cation channels, such as two-pore channel (TPC) proteins. Here, we uncover a mechanism for how TPC1 regulates Ca2+ homeostasis and exocytosis in mast cells in vivo and ex vivo. Notably, in vivo TPC1 deficiency in mice leads to enhanced passive systemic anaphylaxis, reflected by increased drop in body temperature, most likely due to accelerated histamine-induced vasodilation. Ex vivo, mast cell-mediated histamine release and degranulation was augmented upon TPC1 inhibition, although mast cell numbers and size were diminished. Our results indicate an essential role of TPC1 in endolysosomal Ca2+ uptake and filling of endoplasmic reticulum Ca2+ stores, thereby regulating exocytosis in mast cells. Thus, pharmacological modulation of TPC1 might blaze a trail to develop new drugs against mast cell-related diseases, including allergic hypersensitivity.


Assuntos
Anafilaxia/etiologia , Anafilaxia/metabolismo , Canais de Cálcio/deficiência , Suscetibilidade a Doenças , Mastócitos/imunologia , Mastócitos/metabolismo , Biomarcadores , Sinalização do Cálcio , Degranulação Celular , Citocinas/metabolismo , Predisposição Genética para Doença , Histamina/metabolismo , Imunoglobulina E/imunologia , Mediadores da Inflamação/metabolismo
9.
Georgian Med News ; (302): 76-81, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32672694

RESUMO

Objective was to study and compare the parameters of the specificity and sensitivity of skin testing and serologic determination of specific cat and dog IgE. 88 patients with allergic rhinitis and / or asthma were examined by three different methods of specific allergic diagnosis (in vivo and in vitro) in accordance with the guidelines of the ethics committee of the National Pirogov memorial medical university, all were beyond the acute period. The inclusion criteria were allergic rhinitis diagnosis (both intermittent and persistent) and \ or asthma. Skin prick test was carried out according to the classical testing procedure in accordance with regulatory documents with commercial extracts of allergens. Western blot testing for specific IgE levels was performed using RIDA qLine test systems (R-Biopharm AG, Darmstadt, Germany) and Euroline (Euroimmun). The sIgE concentration was converted to a nominal scale (grades) according to the following rules: < 0.35 IU mL-1-level 0 (negative), (0.36-0.69) IU mL-1-level 1 (boundary levels ), (0.7- 3.49) IU mL-1-level 2 (slightly elevated), (3.50-17.4) IU mL-1-level 3 (moderately elevated), (17.5-49 , 9) IU mL-1-level 4 (high levels), (50-100) IU mL-1-level 5 (very high levels) and > 100 IU mL-1-level 6 (extremely high levels). Thus, the results of the two systems for the determination of specific IgE for dog allergen by the Rida AllergyScreen and Euroline methods do not agree very well due to the systematic divergence of indicators; the results of the two systems for the determination of specific IgE for cat allergen by the Rida AllergyScreen and Euroline methods agree very well. There is excellent agreement between the skin test with cat allergen and the detection of specific IgE by the Rida AllergyScreen test, between the skin test with cat allergen and the detection of specific IgE by the Euroline method. There is good agreement between the skin test with dog wool allergens and the detection of specific IgE by the Rida AllergyScreen test, between the skin test with dog hair allergen and the detection of specific IgE by the Euroline method there is satisfactory agreement. The systematic error of the measurement results between two in vitro tests for cat allergen was 0.1 ku/l, which indicates the presence of a small systematic difference, the systematic error of the measurement results between two in vitro tests for dog allergen was 0,26 ku/l, which indicates the presence of a moderate systematic difference.


Assuntos
Asma , Rinite Alérgica , Alérgenos , Animais , Ensaio de Imunoadsorção Enzimática , Alemanha , Humanos , Imunoglobulina E , Testes Cutâneos
10.
Nature ; 584(7821): 463-469, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32717743

RESUMO

Recent studies have provided insights into the pathogenesis of coronavirus disease 2019 (COVID-19)1-4. However, the longitudinal immunological correlates of disease outcome remain unclear. Here we serially analysed immune responses in 113 patients with moderate or severe COVID-19. Immune profiling revealed an overall increase in innate cell lineages, with a concomitant reduction in T cell number. An early elevation in cytokine levels was associated with worse disease outcomes. Following an early increase in cytokines, patients with moderate COVID-19 displayed a progressive reduction in type 1 (antiviral) and type 3 (antifungal) responses. By contrast, patients with severe COVID-19 maintained these elevated responses throughout the course of the disease. Moreover, severe COVID-19 was accompanied by an increase in multiple type 2 (anti-helminths) effectors, including interleukin-5 (IL-5), IL-13, immunoglobulin E and eosinophils. Unsupervised clustering analysis identified four immune signatures, representing growth factors (A), type-2/3 cytokines (B), mixed type-1/2/3 cytokines (C), and chemokines (D) that correlated with three distinct disease trajectories. The immune profiles of patients who recovered from moderate COVID-19 were enriched in tissue reparative growth factor signature A, whereas the profiles of those with who developed severe disease had elevated levels of all four signatures. Thus, we have identified a maladapted immune response profile associated with severe COVID-19 and poor clinical outcome, as well as early immune signatures that correlate with divergent disease trajectories.


Assuntos
Infecções por Coronavirus/imunologia , Infecções por Coronavirus/fisiopatologia , Citocinas/análise , Pneumonia Viral/imunologia , Pneumonia Viral/fisiopatologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Análise por Conglomerados , Citocinas/imunologia , Eosinófilos/imunologia , Feminino , Humanos , Imunoglobulina E/análise , Imunoglobulina E/imunologia , Interleucina-13/análise , Interleucina-13/imunologia , Interleucina-5/análise , Interleucina-5/imunologia , Masculino , Pessoa de Meia-Idade , Pandemias , Linfócitos T/citologia , Linfócitos T/imunologia , Carga Viral , Adulto Jovem
11.
PLoS One ; 15(7): e0235295, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32687504

RESUMO

Spontaneous mutations in the SHANK-associated RH domain interacting protein (Sharpin) resulted in a severe autoinflammatory type of chronic proliferative dermatitis, inflammation in other organs, and lymphoid organ defects. To determine whether cell-type restricted loss of Sharpin causes similar lesions, a conditional null mutant was created. Ubiquitously expressing cre-recombinase recapitulated the phenotype seen in spontaneous mutant mice. Limiting expression to keratinocytes (using a Krt14-cre) induced a chronic eosinophilic dermatitis, but no inflammation in other organs or lymphoid organ defects. The dermatitis was associated with a markedly increased concentration of serum IgE and IL18. Crosses with S100a4-cre resulted in milder skin lesions and moderate to severe arthritis. This conditional null mutant will enable more detailed studies on the role of SHARPIN in regulating NFkB and inflammation, while the Krt14-Sharpin-/- provides a new model to study atopic dermatitis.


Assuntos
Dermatite Atópica/genética , Inflamação/genética , Queratina-14/genética , Proteínas do Tecido Nervoso/genética , Proteína A4 de Ligação a Cálcio da Família S100/genética , Animais , Apoptose/genética , Artrite/genética , Artrite/patologia , Dermatite Atópica/patologia , Modelos Animais de Doenças , Regulação da Expressão Gênica/genética , Humanos , Imunoglobulina E/genética , Inflamação/patologia , Integrases/genética , Interleucina-18/genética , Queratinócitos/metabolismo , Queratinócitos/patologia , Camundongos , NF-kappa B/genética , Fenótipo , Transdução de Sinais
12.
Medicine (Baltimore) ; 99(27): e21055, 2020 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-32629732

RESUMO

Food allergen and aeroallergen sensitization are common allergic diseases worldwide, with widely varying estimates of prevalence in children. Our study investigated the characteristics of ingestion and inhalation allergy among children from Sichuan province in Southwest China, so as to get public awareness of these disorders.A total of 1722 children between 0 and 14 years' old were enrolled in this study. They were outpatients in the West China Second University Hospital during June 2019 to September 2019. Serum specific IgE specific to 10 types of food allergen and 10 types of aeroallergen were estimated. Nutrition indicators were tested by electrochemical luminescence.59.70% children were allergic to at least 1 allergen, comprising 24.90% to aeroallergen and 38.81% to food allergen, respectively, whereas 36.28% children were allergic to both aeroallergen and food allergen. Milk was the most common food allergen, and egg came in second place. With regard to aeroallergen, house dust mite held the maximum proportion (65.02%), whereas dust mite followed behind. Inhalation allergy was more commonly seen in boys than girls. Bronchitis was the most common symptom of both allergies. In addition, the highest incidence age for children to be sensitive to food allergen and aeroallergen were 0∼2 years' old and 3∼5 years' old, respectively. It is worth mentioning that there was no significant difference in nutritional status between children with or without allergic diseases.Our findings reveal that milk, egg, house dust mite, and dust mite are the most common allergens among children in Sichuan province. Boys are more susceptible to aeroallergen than girls. Furthermore, the prevalence of ingestion and inhalation allergy varies from different age groups, and has no correlation with nutritional status. In brief, the analysis of the pattern of food allergen and aeroallergen sensitization is invaluable to effective diagnosis and treatment of allergic diseases.


Assuntos
Alérgenos/imunologia , Hipersensibilidade Alimentar/epidemiologia , Imunização/métodos , Adolescente , Alérgenos/efeitos adversos , Animais , Conscientização , Bronquite/epidemiologia , Bronquite/imunologia , Criança , Pré-Escolar , China/epidemiologia , Ingestão de Alimentos/imunologia , Hipersensibilidade a Ovo/epidemiologia , Hipersensibilidade a Ovo/imunologia , Feminino , Hipersensibilidade Alimentar/imunologia , Humanos , Imunoglobulina E/sangue , Incidência , Lactente , Recém-Nascido , Inalação/imunologia , Masculino , Hipersensibilidade a Leite/epidemiologia , Hipersensibilidade a Leite/imunologia , Estado Nutricional/imunologia , Prevalência , Pyroglyphidae/imunologia
13.
Medicine (Baltimore) ; 99(28): e20911, 2020 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-32664086

RESUMO

BACKGROUND: Allergic rhinitis (AR) is a common allergic disorder worldwide. Western medicine is not optimistic about the therapeutic effect of this disease. However, moxibustion can enhance vital energy or immunity through a great number of clinical trials. Thus, the aim of this systematic review and meta-analysis is to systematically evaluate the effectiveness and safety of indirect moxibustion for treating AR. METHODS: We will conduct a comprehensive literature search in Medline, PubMed, Web of Science, Embase, the Cochrane Library, China National Knowledge Infrastructure Database, WanFang Database, Chinese Scientific Journal Database, and Chinese Biomedical Literature Database from inception to August 2020 without any language restriction. In addition, we will retrieve the unpublished studies and the references of initially included literature manually. Reviewers will identify studies, extract data, and assess the quality independently. The outcomes of interest include: total effective rate, total nasal symptom score, total non-nasal symptom score, rhinitis quality of life questionnaire, visual analog scale, laboratory indicators (i.e., serum levels of IgE, IgA, or IgG), and adverse events. Randomized clinical trials will be collected, methodological quality will be evaluated using the Cochrane risk-of-bias assessment tool, and the level of evidence will be rated using the Grading of Recommendations, Assessment, Development and Evaluation approach. Meta-analysis will be performed using RevMan 5.3.0 software. The heterogeneity test will be conducted between the studies, and P < .1 and I > 50% are the thresholds for the tests. We will utilize the fixed effects model or the random effects model according to the size of heterogeneity. RESULTS: Because the review is ongoing, no results can be reported. CONCLUSIONS: The results of this review will provide reliable evidence for effectiveness and safety of indirect moxibustion for treating AR. ETHICS AND DISSEMINATION: Ethical approval is not required for this study. This systematic review and meta-analysis will be disseminated online and on paper to help guide clinicians. PROSPERO REGISTRATION NUMBER: CRD42019140944.


Assuntos
Imunidade/efeitos dos fármacos , Moxibustão/métodos , Rinite Alérgica/terapia , China/epidemiologia , Humanos , Imunoglobulina A/sangue , Imunoglobulina E/sangue , Imunoglobulina G/sangue , Moxibustão/efeitos adversos , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto , Projetos de Pesquisa , Rinite Alérgica/epidemiologia , Rinite Alérgica/psicologia , Segurança , Resultado do Tratamento , Escala Visual Analógica
14.
PLoS One ; 15(6): e0234413, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32511255

RESUMO

BACKGROUND: Chlamydia pneumoniae is an obligate intracellular bacterium that causes respiratory infection. There may exist an association between C. pneumoniae, asthma, and production of immunoglobulin (Ig) E responses in vitro. Interleukin (IL-4) is required for IgE production. OBJECTIVE: We previously demonstrated that doxycycline suppresses C. pneumoniae-induced production of IgE and IL-4 responses in peripheral blood mononuclear cells (PBMC) from asthmatic subjects. Whereas macrolides have anti-chlamydial activity, their effect on in vitro anti-inflammatory (IgE) and IL-4 responses to C. pneumoniae have not been studied. METHODS: PBMC from IgE- adult atopic subjects (N = 5) were infected +/- C. pneumoniae BAL69, +/- azithromycin (0.1, 1.0 ug/mL) for 10 days. IL-4 and IgE levels were determined in supernatants by ELISA. IL-4 and IgE were detected in supernatants of PBMC (day 10). RESULTS: When azithromycin (0.1, 1.0 ug/ml) was added, IL-4 levels decreased. At low dose, IgE levels increased and at high dose, IgE levels decreased. When PBMC were infected with C. pneumoniae, both IL-4 and IgE levels decreased. Addition of azithromycin (0.1, 1.0 ug/mL) decreased IL-4 levels and had no effect on IgE levels. CONCLUSIONS: These findings indicate that azithromycin decreases IL-4 responses but has a bimodal effect on IgE responses in PBMC from atopic patients in vitro.


Assuntos
Azitromicina/farmacologia , Chlamydophila pneumoniae/imunologia , Imunoglobulina E/biossíntese , Interleucina-4/biossíntese , Idoso , Antibacterianos/farmacologia , Asma/complicações , Asma/tratamento farmacológico , Asma/imunologia , Infecções por Chlamydophila/complicações , Infecções por Chlamydophila/tratamento farmacológico , Infecções por Chlamydophila/imunologia , Chlamydophila pneumoniae/efeitos dos fármacos , Chlamydophila pneumoniae/patogenicidade , Feminino , Humanos , Hipersensibilidade Imediata/complicações , Hipersensibilidade Imediata/imunologia , Hipersensibilidade Imediata/microbiologia , Imunoglobulina E/sangue , Técnicas In Vitro , Interleucina-4/sangue , Leucócitos Mononucleares/efeitos dos fármacos , Leucócitos Mononucleares/imunologia , Leucócitos Mononucleares/microbiologia , Masculino , Pessoa de Meia-Idade , Infecções Respiratórias/complicações , Infecções Respiratórias/tratamento farmacológico , Infecções Respiratórias/imunologia , Adulto Jovem
15.
Food Chem ; 329: 127183, 2020 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-32521427

RESUMO

Combined effects of pH and thermal treatments on black kidney bean lectin (BKBL) were investigated by response surface methodology (RSM). Low-pH (1.0, 2.0, 3.0) incubation decreased hemagglutination activity (HA) and IgE-binding capacity, but the activities would be restored when the lectin was treated by pH shifting to 7.2. Conformational structure analyses indicated that low-pH induced protein unfolding and pH-shifting treatment resulted in a limited structural rearrangement. Mild heating, such as 60 °C for 3 min, slightly increased the HA and IgE-binding activities of pH shifted BKBL, but no obvious effects in the pH 1.0 incubated BKBL. High-temperature and long-time treatment might induce the protein aggregation, further decreased HA and IgE-binding capacities. RSM results showed both IgE-binding capacity and HA were the lowest under the combination of pH 1.0 incubation with 80 °C heating for 15 min or pH shifting from 1.0 to 7.2 with 100 °C heating for 10 min.


Assuntos
Imunoglobulina E/metabolismo , Lectinas/química , Phaseolus/metabolismo , Dicroísmo Circular , Temperatura Alta , Concentração de Íons de Hidrogênio , Interações Hidrofóbicas e Hidrofílicas , Lectinas/metabolismo , Agregados Proteicos , Conformação Proteica em alfa-Hélice , Estrutura Terciária de Proteína , Espectrometria de Fluorescência
16.
Life Sci ; 256: 117896, 2020 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-32504758

RESUMO

AIMS: Numerous studies indicate that toll-like receptor 2 (TLR2) led to divergent effects in asthma. The occurrence of autophagy in asthma pathogenesis is still incompletely understood. Here, we aimed to investigate the role of TLR2 and the underlying mechanisms in allergic airway inflammation and autophagy activation. MAIN METHODS: C57BL/6 and TLR2 knockout (TLR2-/-) mice were subjected to an ovalbumin (OVA)-immunized allergic airway model, and were treated with SP600125. Differential cell counts in bronchoalveolar lavage fluid were determined by Wright's staining. Histological analysis of airway inflammation was determined by haematoxylin and eosin (H&E) and periodic acid-Schiff (PAS) staining. The levels of OVA-specific immunoglobulin E (IgE), tumor necrosis factor α (TNF-α) and interleukin 10 (IL-10) were detected by enzyme-linked immunosorbent assay (ELISA). Proteins expression in lung tissues was detected by western blot, expression of TLR2 was further observed by immunofluorescence. Autophagy activation was determined by western blot and transmission electron microscopy (TEM). KEY FINDINGS: TLR2 expression was increased upon OVA challenge, and TLR2 deficiency was associated with decreased allergic airway inflammation. Meanwhile, TLR2 deficiency weakened autophagy activation. Moreover, inhibition of c-Jun N-terminal kinase (JNK) by SP600125 also suppressed OVA-induced allergic airway inflammation and autophagy activation. Interestingly, treating TLR2-/- mice with SP600125 showed similar OVA-induced allergic airway inflammation and autophagy activation compared to that in vehicle-treated TLR2-/- mice. SIGNIFICANCE: TLR2 might contribute to the maintenance of allergic airway inflammation through JNK signaling pathway accompanying with autophagy activation. These findings may provide a novel signal target for prevention of allergic airway inflammation.


Assuntos
Autofagia , Hipersensibilidade/enzimologia , Hipersensibilidade/patologia , Sistema de Sinalização das MAP Quinases , Ovalbumina/efeitos adversos , Pneumonia/enzimologia , Pneumonia/patologia , Receptor 2 Toll-Like/metabolismo , Animais , Modelos Animais de Doenças , Células Caliciformes/patologia , Imunoglobulina E/sangue , Pulmão/patologia , Pulmão/ultraestrutura , Camundongos Endogâmicos C57BL , NF-kappa B/metabolismo , Pneumonia/sangue , Proteínas Proto-Oncogênicas c-akt/metabolismo
17.
PLoS One ; 15(6): e0234731, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32544181

RESUMO

Airborne fungi are associated with upper and lower airway inflammatory diseases. Alternaria is commonly found in nasal secretions and induces the production of chemical mediators from sinonasal mucosa. This study aimed to establish an Alternaria-induced chronic rhinosinusitis (CRS) mouse model and determine the influence of host allergic background on the immunopathological characteristics of CRS. BALB/c mice were used for establishing the CRS model. Alternaria was intranasally instilled for 8 or 16 weeks with or without ovalbumin (OVA) presensitization. Total serum IgE and Alternaria-specific IgE levels were measured by enzyme-linked immunosorbent assay (ELISA). Interleukin (IL)-4, IL-10, interferon (IFN)-γ, and tumor necrosis factor (TNF)-α levels in nasal lavage fluid (NLF) and splenocytes were measured by ELISA and their mRNAs and levels of associated transcription factors in sinonasal mucosa were determined with quantitative reverse-transcriptase polymerase chain reaction (RT-PCR). Hematoxylin-eosin staining and periodic acid-Schiff staining were performed to evaluate histological changes. Total serum IgE was increased in both allergic and non-allergic CRS. IL-4 was strongly expressed in NLF in both allergic and non-allergic CRS at 16 weeks and not only eosinophils but also neutrophils were increased in NLF of non-allergic CRS mice. The levels of Th1, Th2, and Treg cytokines and transcription factor mRNAs were significantly increased in sinonasal mucosa of non-allergic CRS mice. Both inflammatory cell infiltration and goblet cell hyperplasia were increased in CRS mice. Repeated intranasal instillation of Alternaria results in sinonasal inflammation with inflammatory cell infiltration. The sinonasal mucosal immune responses against Alternaria were shown to differ depending on the host allergic background.


Assuntos
Alternaria/patogenicidade , Rinite/patologia , Sinusite/patologia , Alternaria/imunologia , Animais , Doença Crônica , Modelos Animais de Doenças , Feminino , Imunoglobulina E/sangue , Interleucina-10/análise , Interleucina-10/genética , Interleucina-10/metabolismo , Interleucina-4/análise , Interleucina-4/genética , Interleucina-4/metabolismo , Camundongos , Camundongos Endogâmicos BALB C , Líquido da Lavagem Nasal/química , Mucosa Nasal/metabolismo , Mucosa Nasal/patologia , RNA Mensageiro/metabolismo , Rinite/imunologia , Sinusite/imunologia , Baço/metabolismo , Baço/microbiologia , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo , Fator de Necrose Tumoral alfa/análise , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo
18.
Nature ; 582(7811): 265-270, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32499653

RESUMO

Approximately one-third of the world's population suffers from allergies1. Exposure to allergens crosslinks immunoglobulin E (IgE) antibodies that are bound to mast cells and basophils, triggering the release of inflammatory mediators, including histamine2. Although IgE is absolutely required for allergies, it is not understood why total and allergen-specific IgE concentrations do not reproducibly correlate with allergic disease3-5. It is well-established that glycosylation of IgG dictates its effector function and has disease-specific patterns. However, whether IgE glycans differ in disease states or affect biological activity is completely unknown6. Here we perform an unbiased examination of glycosylation patterns of total IgE from individuals with a peanut allergy and from non-atopic individuals without allergies. Our analysis reveals an increase in sialic acid content on total IgE from individuals with a peanut allergy compared with non-atopic individuals. Removal of sialic acid from IgE attenuates effector-cell degranulation and anaphylaxis in several functional models of allergic disease. Therapeutic interventions-including removing sialic acid from cell-bound IgE with a neuraminidase enzyme targeted towards the IgE receptor FcεRI, and administering asialylated IgE-markedly reduce anaphylaxis. Together, these results establish IgE glycosylation, and specifically sialylation, as an important regulator of allergic disease.


Assuntos
Imunoglobulina E/química , Imunoglobulina E/imunologia , Ácido N-Acetilneuramínico/análise , Hipersensibilidade a Amendoim/imunologia , Hipersensibilidade a Amendoim/patologia , Adolescente , Adulto , Idoso , Alérgenos/imunologia , Anafilaxia/imunologia , Animais , Estudos de Casos e Controles , Degranulação Celular/imunologia , Criança , Pré-Escolar , Feminino , Glicosilação , Humanos , Imunoglobulina E/efeitos adversos , Imunoglobulina E/farmacologia , Lactente , Recém-Nascido , Masculino , Camundongos , Pessoa de Meia-Idade , Modelos Imunológicos , Ácido N-Acetilneuramínico/química , Ácido N-Acetilneuramínico/metabolismo , Neuraminidase/metabolismo , Receptores de IgE/metabolismo , Adulto Jovem
19.
Allergol. immunopatol ; 48(3): 232-236, mayo-jun. 2020. tab, graf
Artigo em Inglês | IBECS | ID: ibc-192024

RESUMO

BACKGROUND: China and Spain are world leaders in the consumption of edible bulbs (garlic and onion), but there are few references to their capacity to cause allergic symptoms. The target was to study allergic sensitization and clinical symptoms associated with garlic and onion consumption in a large sample of allergic patients. METHODS: An observational cross-sectional study was conducted, testing garlic and onion extracts in 8109 patients of all ages seen by our allergy clinic in 2018. Forty-four aeroallergens and foods were tested, including garlic and onion, with prick test and determination of specific IgE. Oral provocation and contact tests were performed if a delayed reaction was suspected. Western Blot was performed in the serum of patients positive to garlic and onion. RESULTS: We conducted 356,798 skin tests and 4254 specific IgE determinations. Of the 8109 patients tested, 2508 (30.92%) presented with symptoms associated with food intake and, in these patients, food hypersensitivity was detected by skin test, positive specific IgE or provocation in 924 patients, and was caused by garlic or onions in 27, indicating a prevalence of 2.92%. Immunodetection showed an association between the symptoms and a specific LTP to these bulbs, without cross-reactivity with other LTPs in the Mediterranean diet (peach, wheat). CONCLUSIONS: Allergic hypersensitivity to garlic and onions should not be underestimated and, given their high consumption, should be included in the diagnostic food allergy battery


No disponible


Assuntos
Humanos , Masculino , Feminino , Lactente , Criança , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Hipersensibilidade Alimentar/diagnóstico , Alho/imunologia , Imunoglobulina E/sangue , Cebolas/imunologia , Hipersensibilidade Alimentar/imunologia , Testes Cutâneos , Teste de Radioalergoadsorção , Estudos Transversais , Western Blotting
20.
Allergol. immunopatol ; 48(3): 244-250, mayo-jun. 2020. graf, tab
Artigo em Inglês | IBECS | ID: ibc-192026

RESUMO

INTRODUCTION AND OBJECTIVES: Eosinophilic esophagitis (EoE) is frequently miss-diagnosed or overlooked for several years because of the invasiveness of investigations and the non-specificity of symptoms in childhood. Due to the lack of specific recommendations in children, its management remains very heterogeneous, especially concerning allergy testing. The aim of this study is to analyze our population and practices, in comparison with the literature, with a focus on allergic management, to harmonize and optimize our practice. MATERIAL AND METHODS: We included all children with a diagnosis of EoE at the Hospital Femme Mere Enfant, Bron, France. Data were collected via retrospective chart review. RESULTS: 108 patients were included with an average age of 9.5 years. Average delay before diagnosis was 6.65 years. Symptoms varied with age, with a predominance of vomiting (60% of patients), feeding difficulties (72%) and growth difficulties (24%) in children < 5 years, whereas older children often presented with feeding blockage (64%) and dysphagia (61%). Cough was frequent in our cohort (18.5%), especially in children < 10 years (38.5% between three and five years). The allergic background was frequent (70.3%) and 80% of our patients benefited from allergy testing. Allergy testing was particularly useful to guide therapy as elimination diet represented an effective treatment in 60% of our patients CONCLUSIONS: Allergy testing has to be harmonized to include major allergens (egg, milk, peanut, fish, wheat, and soy), including prick and patch tests. Allergy-testing based diet seemed to be the best compromise between efficiency and constraints, especially in mono-sensitized patients


No disponible


Assuntos
Humanos , Masculino , Feminino , Recém-Nascido , Lactente , Pré-Escolar , Criança , Adolescente , Esofagite Eosinofílica/imunologia , Esofagite Eosinofílica/diagnóstico , Técnicas Imunológicas , Estudos Retrospectivos , Hipersensibilidade/diagnóstico , Esofagite Eosinofílica/complicações , Hipersensibilidade Alimentar/diagnóstico , Rinite Alérgica/diagnóstico , Dermatite Atópica/diagnóstico , Endoscopia , Imunoglobulina E/análise , Testes Cutâneos
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