scholarly journals Total and Specific Immunoglobulin E and Their Relationship to Respiratory Symptoms in Quebec Children and Adolescents

2005 ◽  
Vol 12 (8) ◽  
pp. 426-432 ◽  
Author(s):  
Benoît Levesque ◽  
Jean-François Duchesne ◽  
Suzanne Gingras ◽  
Pierre Allard ◽  
Edgar Delvin ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Respiratory Symptoms ◽  
Immunoglobulin E ◽  
Geometric Mean ◽  
Allergic Sensitization ◽  
Population Sample ◽  
Ethnic Origin ◽  
Total Ige ◽  
Specific Immunoglobulin E ◽  
Specific Immunoglobulin

BACKGROUND: Respiratory disease is a major cause of morbidity in young people. It is now recognized that atopy plays an important role in the development of chronic respiratory symptoms in children.OBJECTIVE: To examine the determinants and consequences of serum total and specific immunoglobulin E (IgE) in a general population sample of Québec children and adolescents.METHODS: In 1999, 2349 children and adolescents (nine, 13 or 16 years of age) who had participated in a respiratory symptom and disease questionnaire had their total IgE measured. Of these participants, a subsample of 451 children and adolescents was analyzed to detect antibodies to eight specific allergens (ie, allergens of dust mites [Dermatophagoides farinae and Dermatophagoides pteronyssinus], cat, dog, ragweed, Timothy grass, mould [alternaria] and cockroach).RESULTS: The geometric mean of the total IgE was 44.4 U/mL among all participants. Concentrations were higher in boys and increased with age. More than 41% of the participants were sensitized to at least one specific allergen. Such sensitization was strongly associated with the occurrence of respiratory conditions and symptoms, namely asthma, wheezing and rhinitis. Family history, school location and ethnic origin had an impact on the prevalence of atopy and total IgE levels.CONCLUSIONS: Allergic sensitization is a major determinant in the development of asthma, wheezing and rhinitis in children and adolescents in the province of Québec.

scholarly journals Allergic diseases attributable to atopy in a population sample of Asian children

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chao-Yi Wu ◽  
Hsin-Yi Huang ◽  
Wen-Chi Pan ◽  
Sui-Ling Liao ◽  
Man-Chin Hua ◽  
...  
Keyword(s):  
Immunoglobulin E ◽  
Population Attributable Risk ◽  
Population Sample ◽  
International Study ◽  
Allergic Diseases ◽  
Population Based ◽  
School Age Children ◽  
Specific Immunoglobulin E ◽  
Asian Children ◽  
Specific Immunoglobulin

AbstractThe proportion of allergic diseases attributable to atopy remains a subject of controversy. This study aimed to estimate the population risk of physician-diagnosed asthma, rhinitis and eczema attributed to atopy among a population sample of Asian school-age children. Asian children aged 5–18 years (n = 1321) in the Prediction of Allergies in Taiwanese CHildren (PATCH) study were tested for serum allergen-specific immunoglobulin E. Physician-diagnosed asthma, rhinitis and eczema were assessed by a modified International Study of Asthma and Allergies in Childhood questionnaire. Atopy was defined as the presence of serum allergen-specific immunoglobulin E. In this population-based study, 50.4% of the subjects with asthma, 46.3% with rhinitis, and 46.7% with eczema were attributable to atopy. The population attributable risk (PAR) of atopy for three allergic diseases was higher in adolescents (asthma, 54.4%; rhinitis, 59.6%; eczema, 49.5%) than younger children aged less than 10 years (asthma, 46.9%; rhinitis, 39.5%; eczema, 41.9%). Among the seven allergen categories, sensitization to mites had the highest PARs for all three allergic diseases (51.3 to 64.1%), followed by sensitization to foods (asthma, 7.1%; rhinitis, 10.4%; eczema 27.7%). In conclusion, approximately half (46.3 to 50.4%) of Asian children in Taiwan with allergic diseases are attributable to atopy.

scholarly journals Prevalence of specific immunoglobulin E and G against Aspergillus fumigatus in patients with asthma

2019 ◽  
Author(s):  
Newsha Hedayati ◽  
Vida Mortezaee ◽  
Seyed Alireza Mahdaviani ◽  
Maryam Sadat Mirenayat ◽  
Maryam Hassanzad ◽  
...  
Keyword(s):  
Aspergillus Fumigatus ◽  
Severe Asthma ◽  
Immunoglobulin E ◽  
Clinical Symptoms ◽  
Specific Ige ◽  
Total Ige ◽  
Asthmatic Patients ◽  
Specific Immunoglobulin E ◽  
Specific Immunoglobulin ◽  
The Mean

Background and Purpose: Aspergillus fumigatus as a ubiquitous fungus can be found in the respiratory tract of the asthmatic and healthy people. The inhalation of Aspergillus spores leads to an immune response in individuals with asthma and results in the aggravation of the clinical symptoms. The present study aimed to investigate the prevalence of specific immunoglobulin E and G (IgE and IgG) against A.fumigatus in asthmatic patients.Materials and Methods: This study was conducted on 200 consecutive patients with moderate to severe asthma referring to Masih Daneshvari hospital Tehran, Iran, from January 2016 to February 2018. Skin prick test (SPT) was performed in all subjects with Aspergillus allergens. Moreover, all patients underwent specific IgE testing for Aspergillus using Hycor method. Enzyme immune assay was applied to measure total IgE and Aspergillus-specific IgG.Results: According to the results, the mean age of the patients was 45.8 years (age range: 18-78 years). The mean levels of total IgE and Aspergillus specific IgE in asthmatic patients were obtained as 316.3 (range: 6-1300 IU/ml) and 1.5 (range: 0.1-61.3 IU/ml), respectively. Out of 200 patients, 27 (13.5%), 65 (32.5%), 22 (11.0%), and 86 (43.0%) cases had positive Aspergillus SPT, total IgE of > 417 IU/ml, Aspergillus-specific IgE, and IgG, respectively. The level of these variables in patients with severe asthma were 16 (16.5%), 36 (37.1%), 15 (15.5%), and 46 (47.4%), respectively.Conclusion: As the findings indicated, reactivity to Aspergillus is a remarkable phenomenon in asthmatic patients. It is also emphasised that the climatic condition may affect the positive rate of hypersensitivity to Aspergillus.

scholarly journals Association Between Allergen Sensitization and Anaphylaxis in Patients Visiting a Pediatric Emergency Department

2021 ◽  
Vol 9 ◽  
Author(s):  
Won Seok Lee ◽  
Lily Myung-Jin Cha ◽  
Man Yong Han ◽  
Kyung Suk Lee
Keyword(s):  
Immunoglobulin E ◽  
Allergic Sensitization ◽  
Pediatric Emergency ◽  
Allergen Sensitization ◽  
Severe Anaphylaxis ◽  
Specific Immunoglobulin E ◽  
Specific Immunoglobulin ◽  
Facial Edema ◽  
Inhalant Allergens ◽  
Symptoms And Signs

Background and Objectives: Anaphylaxis, a severe allergic disease, can be triggered by various causes. This study investigated the association between allergic sensitization and anaphylactic symptoms and the severity of anaphylaxis in children.Patients and Methods: A retrospective review of 107 pediatric patients with anaphylaxis was performed between January 1, 2015, and December 31, 2017; 74 patients underwent allergen testing for specific immunoglobulin E. Allergic sensitizations and associations with anaphylactic symptoms and severity were investigated.Results: Overall, 64 (86.5%) patients were sensitized to food or inhalant allergens. In children under 2 years of age, 90.5% were sensitized to food (P = 0.001); in those over 6 years of age, 84.6% were sensitized to inhalant allergens (P = 0.001). Milk sensitization was significantly associated with severe anaphylaxis (P = 0.036). The following symptoms showed significant associations with certain allergen sensitizations: facial edema with food; wheezing with milk; dyspnea with mite, etc. Certain allergen sensitizations presenting as risk factors for anaphylactic symptoms: wheat (adjusted odds ratio [aOR] = 4.644, P = 0.044) and nuts (aOR=3.614, P = 0.041) for wheezing, nuts (aOR=5.201, P = 0.026) for dyspnea, and milk (aOR=4.712, P = 0.048) for vomiting.Conclusion: The allergen sensitization status differed according to the age of the children experiencing anaphylaxis. The severity, symptoms, and signs of anaphylaxis differed depending on the allergen sensitization status.

Evaluation of a fully automated and completely quantitative allergen-specific IgE and total IgE detection assay

2021 ◽  
Author(s):  
Huimin Huang ◽  
Zhifeng Huang ◽  
Peiyan Zheng ◽  
Nili Wei ◽  
Xueqing Liang ◽  
...  
Keyword(s):  
Immunoglobulin E ◽  
Detection System ◽  
Specific Ige ◽  
Quantitative Detection ◽  
Total Ige ◽  
Detection Assay ◽  
Specific Immunoglobulin E ◽  
Specific Immunoglobulin

Based on the current urgent need for an in vitro quantitative detection system for allergens in most hospitals in China, we introduced a novel allergen-specific immunoglobulin E detection system that...

scholarly journals Prevalence of Allergic Sensitization to Conifer Pollen in a High Cypress Exposure Area

2016 ◽  
Vol 7 (4) ◽  
pp. ar.2016.7.0183 ◽  
Author(s):  
Javier Domínguez-Ortega ◽  
María Ángeles López-Matas ◽  
María Dolores Alonso ◽  
Angélica Feliu ◽  
Javier Ruiz-Hornillos ◽  
...  
Keyword(s):  
Immunoglobulin E ◽  
Skin Prick Testing ◽  
Allergic Sensitization ◽  
Positive Skin Prick Test ◽  
Serum Samples ◽  
Positive Skin ◽  
Prick Test ◽  
Specific Immunoglobulin E ◽  
Specific Immunoglobulin ◽  
Positive Results

Background Sensitization to Finales (Cupressaceae and Pinaceae) has increased dramatically in recent years. The prevalence of sensitization in different geographic areas is related to exposure to specific pollens. Objectives To investigate the prevalence of allergy to different conifer pollens, describe the characteristics of patients with such allergy, and identify the involved allergens. Methods Patients were recruited at five hospitals near Madrid. Extracts from conifer pollen were prepared and used in skin-prick testing. Wheal sizes were recorded, and serum samples obtained from patients with positive reactions to Cupressus arizonica and/or Pinus pinea. The specific immunoglobulin E value to C. arizonica and Cup a 1 was determined. Individual immunoblots for each patient and with a pool of sera were performed. Allergenic proteins were sequenced by using liquid chromatography-tandem mass spectrometry. Results Of 499 individuals included in the study, 17 (14%) had positive skin-prick test results to some conifer pollen extracts. Sixty-four patients had positive results to C. arizonica (prevalence 12.8%) and 11 had positive results to P. pinea (2.2%). All the patients had respiratory symptoms (61.4% during the C. arizonica pollination period), and 62.9% had asthma. Approximately 86% of the patients had positive specific immunoglobulin E results to C. arizonica and 923% had positive results to Cup a 1. Fourteen different bands were recognized by immunoblot; the most frequent bands were those detected at 43, 18, 16, and 14 kDa. All sequenced proteins corresponded to Cup a 1. Conclusion Allergy to conifer pollen could be considered a relevant cause of respiratory allergy in central Spain. Asthma was more frequent than in other studies. We only identified Cup a 1 as involved in sensitization.

Interpretation of food specific immunoglobulin E levels in the context of total IgE

2013 ◽  
Vol 111 (1) ◽  
pp. 20-24 ◽  
Author(s):  
Tara J. Federly ◽  
Bridgette L. Jones ◽  
Hongying Dai ◽  
Chitra Dinakar
Keyword(s):  
Immunoglobulin E ◽  
Total Ige ◽  
Specific Immunoglobulin E ◽  
Specific Immunoglobulin

scholarly journals Diagnosing Environmental Allergies: Comparison of Skin-Prick, Intradermal, and Serum Specific Immunoglobulin E Testing

2017 ◽  
Vol 8 (2) ◽  
pp. ar.2017.8.0194 ◽  
Author(s):  
Denisa Ferastraoaru ◽  
Maria Shtessel ◽  
Elizabeth Lobell ◽  
Golda Hudes ◽  
David Rosenstreich ◽  
...  
Keyword(s):  
New York ◽  
Immunoglobulin E ◽  
Skin Prick Testing ◽  
Skin Testing ◽  
Allergic Sensitization ◽  
Test Results ◽  
Specific Immunoglobulin E ◽  
Modern Methods ◽  
Specific Immunoglobulin ◽  
Exposure History

Background Allergists commonly perform intradermal skin testing (IDST) after negative skin-prick testing (SPT) to comprehensively diagnose environmental allergic sensitization. However, with the availability of modern methods to detect serum-specific immunoglobulin E (ssIgE), it is unclear if ssIgE testing could substitute for IDST. Objective To determine the efficacy of ssIgE testing and IDST when added to SPT in diagnosing environmental allergic sensitizations. Methods SPT, IDST, and ssIgE testing to nine common environmental allergens were analyzed in 75 patients with oculonasal symptoms who presented to our allergy clinics in the Bronx, New York, between January 2014 and May 2015. Results A total of 651 SPT and 499 ssIgE tests were independently performed and revealed 162 (25%) and 127 (25%) sensitizations, respectively. When SPT results were negative, IDST results revealed 108 of 452 additional sensitizations (24%). In contrast, when SPT results were negative, ssIgE test results only revealed 9% additional sensitizations. When both SPT and IDST results were negative, ssIgE testing only detected 3% of additional sensitizations, and ssIgE levels were typically low in these cases (median, 1.25 kU/L; range, 0.357–4.47 kU/L). When both SPT and ssIgE test results were negative, IDST results detected 15% additional sensitizations. Conclusion IDST detected more additional environmental sensitizations compared with ssIgE testing. IDST, therefore, may be useful when the SPT and/or ssIgE testing results were negative, but the exposure history indicated relevant allergic sensitization. Serology added only a little more information if both SPT and IDST results were negative but may be useful in combination with SPT if IDST cannot be performed.

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