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de-Apoena Reche DT, Machado NR, Fagundes BO, Bergamasco IS, de Sousa TR, do Nascimento LA, Cunha FRM, de-Oliveira MG, da-Ressureição Sgnotto F, França CN, Victor JR. IgG from Dermatophagoides pteronyssinus (Der p)-atopic individuals modulates non-atopic thymic B cell phenotype (alfa-4/beta-7) and cytokine production (IFN-γ, IL-9, and IL-10) with direct membrane interaction. Sci Rep 2024; 14:7274. [PMID: 38538762 PMCID: PMC10973508 DOI: 10.1038/s41598-024-57950-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 03/23/2024] [Indexed: 04/01/2024] Open
Abstract
Studies about thymic B cells are scarce in the literature, but it was suggested that they can exert modulatory and regulatory functions on the immune system. Thymic B cells can play some role in regulating the most frequent allergic background worldwide, the atopy induced by the mite Dermatophagoides pteronyssinus (Der p). Here, we aimed to evaluate if the polyclonal IgG repertoire produced by Der p-atopic individuals can influence the homing and cytokine profile of human thymic B derived from non-atopic children aged less than seven days. With this purpose, we produced polyclonal IgG formulations and cultivated human thymocytes in their presence. We also assessed IgG subclasses and the direct interaction of IgG with thymic B cell membranes. Our results could demonstrate that Der p-atopic IgG could not reduce the expression of α4β7 homing molecule as observed in response to the other IgG formulations and could reduce the frequency of IFN-γ- and IL-9-producing thymic B cells compared to the mock condition. Der p-atopic IgG could also induce thymic IL-10-producing B cells compared to control conditions. The IgG derived from Der p-atopic individuals failed to diminish the population of IL-13-producing thymic B cells, unlike the reduction observed with other IgG formulations when compared to the mock condition. All IgG formulations had similar levels of IgG subclasses and directly interacted with thymic B cell membranes. Finally, we performed experiments using peripheral non-atopic B cells where IgG effects were not observed. In conclusion, our observation demonstrates that IgG induced in allergic individuals can modulate non-atopic thymic B cells, potentially generating thymic B cells prone to allergy development, which seems to not occur in mature B cells.
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Affiliation(s)
| | - Nicolle Rakanidis Machado
- Laboratory of Medical Investigation LIM-56, Division of Clinical Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar, 500, 3rd Floor, São Paulo, SP, 05403-000, Brazil
| | - Beatriz Oliveira Fagundes
- Laboratory of Medical Investigation LIM-56, Division of Clinical Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar, 500, 3rd Floor, São Paulo, SP, 05403-000, Brazil
| | - Isabella Siuffi Bergamasco
- Post Graduation Program in Health Sciences, Santo Amaro University (UNISA), São Paulo, SP, 04829-300, Brazil
- Laboratory of Medical Investigation LIM-56, Division of Clinical Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar, 500, 3rd Floor, São Paulo, SP, 05403-000, Brazil
| | - Thamires Rodrigues de Sousa
- Laboratory of Medical Investigation LIM-56, Division of Clinical Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar, 500, 3rd Floor, São Paulo, SP, 05403-000, Brazil
| | - Lais Alves do Nascimento
- Laboratory of Medical Investigation LIM-56, Division of Clinical Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar, 500, 3rd Floor, São Paulo, SP, 05403-000, Brazil
| | | | - Marilia Garcia de-Oliveira
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | | | - Carolina Nunes França
- Post Graduation Program in Health Sciences, Santo Amaro University (UNISA), São Paulo, SP, 04829-300, Brazil
| | - Jefferson Russo Victor
- Post Graduation Program in Health Sciences, Santo Amaro University (UNISA), São Paulo, SP, 04829-300, Brazil.
- Laboratory of Medical Investigation LIM-56, Division of Clinical Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar, 500, 3rd Floor, São Paulo, SP, 05403-000, Brazil.
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Naidenova IL, Danilov AB, Simonova AV, Pilipovich AA, Filatova EG. [The role of food allergy as a provoking factor of migraine]. Zh Nevrol Psikhiatr Im S S Korsakova 2023; 123:56-61. [PMID: 37655411 DOI: 10.17116/jnevro202312308156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
OBJECTIVE To assess the effect of food allergies on the course of migraine. MATERIAL AND METHODS Seventy patients with migraine, aged 21-56 years old, were examined using headache diary, MIDAS and VAS, studies of specific antibodies of the IgG4 class (delayed type food allergy) by immuno-enzyme analysis (ELISA), microbiological examination of a smear from the mucous membrane of the posterior wall of the oropharynx with mass spectrometry of microbial markers (MSMM) with the identification of 57 microorganisms. RESULTS We found an increase in specific IgG4 for a number of food allergens in most patients with migraine, of which 48.5% had a pronounced increase in IgG4 (>150 kEd/l) for at least one allergen (cow's milk - 13% patients, wheat flour - 5%, egg white - 47% or yolk - 26%, quail egg - 15%, sweet pepper - 6%), in 29% of people to several food allergens at once (all of them had chicken egg protein as one of the allergens). There was the association of IgG4 titers to wheat allergen with the severity of headache according to VAS (r-S=0.7; p=0.0046) in patients with the most severe, chronic migraine (17 people) and with an imbalance of the oropharyngeal microbiota, namely, concentration of pathological viruses Herpes spp. (rs=0.29; p=0.02), Epstein-Barr (rs=0.46; p=0.0002) and microscopic fungi (rs=0.39; p=0.0016), detected in these patients. CONCLUSION We show for the first time the relationship between delayed-type food allergy and redistribution in the microbiome of the oropharynx of patients with migraine and once again confirm the role of delayed-type food allergy as a clinically significant factor influencing the course of migraine (its intensity and chronicity).
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Affiliation(s)
- I L Naidenova
- Sechenov The First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - A B Danilov
- Sechenov The First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - A V Simonova
- Vladimirsky Moscow Regional Research Clinical Institute, Moscow, Russia
| | - A A Pilipovich
- Sechenov The First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - E G Filatova
- Sechenov The First Moscow State Medical University (Sechenov University), Moscow, Russia
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Allergenic food protein consumption is associated with systemic IgG antibody responses in non-allergic individuals. Immunity 2022; 55:2454-2469.e6. [PMID: 36473469 DOI: 10.1016/j.immuni.2022.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 06/01/2022] [Accepted: 11/09/2022] [Indexed: 12/12/2022]
Abstract
Although food-directed immunoglobulin E (IgE) has been studied in the context of allergies, the prevalence and magnitude of IgG responses against dietary antigens are incompletely characterized in the general population. Here, we measured IgG binding against food and environmental antigens obtained from allergen databases and the immune epitope database (IEDB), represented in a phage displayed library of 58,233 peptides. By profiling blood samples of a large cohort representing the average adult Israeli population (n = 1,003), we showed that many food antigens elicited systemic IgG in up to 50% of individuals. Dietary intake of specific food protein correlated with antibody binding, suggesting that diet can shape the IgG epitope repertoire. Our work documents abundant systemic IgG responses against food antigens and provides a reference map of the exact immunogenic epitopes on a population scale, laying the foundation to unravel the role of food- and environmental antigen-directed antibody binding in disease contexts.
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de Sousa TR, Fagundes BO, Nascimento A, Fernandes LA, Sgnotto FDR, Orfali RL, Aoki V, Duarte AJDS, Sanabani SS, Victor JR. IgG from Adult Atopic Dermatitis (AD) Patients Induces Thymic IL-22 Production and CLA Expression on CD4+ T Cells: Possible Epigenetic Implications Mediated by miRNA. Int J Mol Sci 2022; 23:6867. [PMID: 35743308 PMCID: PMC9224968 DOI: 10.3390/ijms23126867] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/30/2022] Open
Abstract
Atopic dermatitis (AD) is a common relapsing inflammatory skin disorder characterized by immune-mediated inflammation and epidermal barrier dysfunction. The pathogenesis of AD is multifactorial and has not been fully elucidated to date. This study aimed to evaluate whether serum IgG from adult AD patients could modulate the thymic maturation of IL-22-producing T cells and CLA+ T cells of non-atopic infants. Given that miRNAs regulate immune response genes, we evaluated whether miRNA expression is also altered in cultured thymocytes. Thymocytes were cultured with purified IgG from AD patients or control conditions (mock, Intravenous-IgG (IVIg), non-atopic IgG, or atopic non-AD IgG). Using flow cytometry analysis, we assessed the expression of CLA and intracellular levels of IL-4, IFN-γ, and IL-22 on double-positive T cells (DP T), CD4 T cells, or CD8 T cells. We also investigated the frequency of IgG isotypes and their direct interaction with the thymic T cells membrane. The miRNA profiles were evaluated by the Illumina small RNA-seq approach. MiRNA target gene prediction and enrichment analyses were performed using bioinformatics. Increased frequencies of IL-22 and CLA+ producing CD4+ T cells cultured with IgG of AD patients was seen in non-atopic infant thymocytes compared to all control conditions. No alterations were observed in the frequency of IgG isotypes among evaluated IgG pools. Evidence for a direct interaction between IgG and thymic DP T, CD4 T, and CD8 T cells is presented. The small RNA-seq analysis identified ten mature miRNAs that were modulated by AD IgG compared to mock condition (miR-181b-5p, hsa-miR-130b-3p, hsa-miR-26a-5p, hsa-miR-4497, has-miR-146a, hsa-let-7i-5p, hsa-miR-342-3p, has-miR-148a-3p, has-miR-92a and has-miR-4492). The prediction of the targetome of the seven dysregulated miRNAs between AD and mock control revealed 122 putative targets, and functional and pathway enrichment analyses were performed. Our results enhance our understanding of the mechanism by which IgG can collaborate in thymic T cells in the setting of infant AD.
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Affiliation(s)
- Thamires Rodrigues de Sousa
- Laboratory of Medical Investigation LIM-56, Division of Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar 500, Sao Paulo 05403-000, Brazil; (T.R.d.S.); (B.O.F.); (R.L.O.); (V.A.); (A.J.d.S.D.)
| | - Beatriz Oliveira Fagundes
- Laboratory of Medical Investigation LIM-56, Division of Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar 500, Sao Paulo 05403-000, Brazil; (T.R.d.S.); (B.O.F.); (R.L.O.); (V.A.); (A.J.d.S.D.)
| | - Andrezza Nascimento
- Post-Graduation Program in Translational Medicine, Federal University of São Paulo, Sao Paulo 04039-002, Brazil; (A.N.); (L.A.F.)
| | - Lorena Abreu Fernandes
- Post-Graduation Program in Translational Medicine, Federal University of São Paulo, Sao Paulo 04039-002, Brazil; (A.N.); (L.A.F.)
| | | | - Raquel Leão Orfali
- Laboratory of Medical Investigation LIM-56, Division of Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar 500, Sao Paulo 05403-000, Brazil; (T.R.d.S.); (B.O.F.); (R.L.O.); (V.A.); (A.J.d.S.D.)
| | - Valéria Aoki
- Laboratory of Medical Investigation LIM-56, Division of Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar 500, Sao Paulo 05403-000, Brazil; (T.R.d.S.); (B.O.F.); (R.L.O.); (V.A.); (A.J.d.S.D.)
| | - Alberto José da Silva Duarte
- Laboratory of Medical Investigation LIM-56, Division of Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar 500, Sao Paulo 05403-000, Brazil; (T.R.d.S.); (B.O.F.); (R.L.O.); (V.A.); (A.J.d.S.D.)
- Division of Pathology, Medical School, University of Sao Paulo, Sao Paulo 05403-000, Brazil
| | - Sabri Saeed Sanabani
- Laboratory of Medical Investigation LIM-56, Division of Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar 500, Sao Paulo 05403-000, Brazil; (T.R.d.S.); (B.O.F.); (R.L.O.); (V.A.); (A.J.d.S.D.)
- Laboratory of Medical Investigation LIM-03, Division of Pathology, Medical School, University of Sao Paulo, Sao Paulo 05403-000, Brazil
| | - Jefferson Russo Victor
- Laboratory of Medical Investigation LIM-56, Division of Dermatology, Medical School, University of Sao Paulo, Av. Dr. Enéas Carvalho de Aguiar 500, Sao Paulo 05403-000, Brazil; (T.R.d.S.); (B.O.F.); (R.L.O.); (V.A.); (A.J.d.S.D.)
- Faculdades Metropolitanas Unidas (FMU), Health Sciences School, Sao Paulo 04505-002, Brazil
- Medical School, Universidade Santo Amaro (UNISA), Sao Paulo 04829-300, Brazil
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Irahara M, Yamamoto-Hanada K, Saito-Abe M, Sato M, Miyaji Y, Yang L, Mitsubuchi H, Oda M, Sanefuji M, Ohga S, Ikegami A, Mise N, Suga R, Shimono M, Yamazaki S, Nakayama SF, Ohya Y. Fluctuations of aeroallergen-specific immunoglobulins and children's allergic profiles: Japan Environment & Children's Study of a pilot cohort. Allergol Int 2022; 71:335-344. [PMID: 35219607 DOI: 10.1016/j.alit.2022.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/23/2021] [Accepted: 01/11/2022] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Allergen-specific immunoglobulins have a crucial role in allergic diseases. Most wheeze episodes develop before school age, and allergic rhinitis later develops during early elementary school years. However, the clinical background and cytokine/chemokine profiles associated with changes in immunoglobulins during early school-age are poorly understood. METHODS This study used blood samples from children participating in the JECS Pilot Study. We examined nineteen kinds of aeroallergen-specific immunoglobulins (IgE, IgG1, IgG4, and IgA) levels in patients at age 6 and age 8. Fluctuations of Der f 1- and Cry j 1-specific immunoglobulins levels during the two periods were compared to assess the frequency of allergic statuses and clusters of cytokine/chemokine profiles. RESULTS The medians of aeroallergen-specific IgE levels did not fluctuate, and almost all IgG1 and IgG4 decreased. In IgA, four (e.g., Der f 1) increased, whereas the other four (e.g., Cry j 1) decreased. The ratio of the Der f 1-specific IgG1 level at age 8 to that at age 6 was higher in children with poor asthma control than in children with better asthma control. Moreover, the cytokine/chemokine cluster with relatively lower IL-33 and higher CXCL7/NAP2 was associated with lower Der f 1- and Cry j 1-specific IgG4 levels, but not IgE levels. CONCLUSIONS The cluster of cytokine/chemokine profiles characterized by lower IL-33 and higher CXCL7/NAP2 was associated with the maintenance of aeroallergen-specific IgG4 levels. This result provides a basis for considering the control of aeroallergen-specific immunoglobulins.
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Allergic rhinitis, allergic contact dermatitis and disease comorbidity belong to separate entities with distinct composition of T-cell subsets, cytokines, immunoglobulins and autoantibodies. Allergy Asthma Clin Immunol 2022; 18:10. [PMID: 35148790 PMCID: PMC8840545 DOI: 10.1186/s13223-022-00646-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 01/06/2022] [Indexed: 11/10/2022] Open
Abstract
Background Allergic rhinitis (AR) and allergic contact dermatitis (ACD) are prevalent allergic diseases and have significant impacts on patients’ daily life. Despite many studies on AR or ACD have been conducted separately, little is known about the immune responses in patients of AR combined with ACD and the interplay between AR and ACD. Our study compared various aspects of immune elements in patients with AR or/and ACD, aiming to characterize the immune responses in AR, ACD, and AR combined with ACD. Methods A total of 57 patients diagnosed with AR or/and ACD and 28 healthy volunteers were included. AR patients were further divided into seasonal AR (SAR) and perennial AR (PAR). All subjects’ blood samples were taken to assess the concentration of immunoglobulins, complement C3, C4, autoantibodies and cytokines in serum by immunoturbidimetry, ELISA or Luminex200 platform. Peripheral blood mononuclear cells (PBMCs) were subjected to the analysis of lymphocyte subpopulations by flow cytometry. Results It indicated that AR disease caused elevated levels of IgE, IgA, IgG, IgG4, as well as IL-4, IL-15, IL-8 and IL-6 in serum. AR patients possessed a decreased CD4/CD8 ratio and an increased proportion of memory CD4 + T-cell subset, with a skewed Th2 response and an enhanced CD8 + T-cell activation. Compared with patients with sole AR or ACD condition, AR + ACD patients presented with a significantly increased proportion of memory CD8 + T-cell subset and were prone to autoimmune disorders as indicated by the increased autoantibodies. The immune elements in patients with ACD only were least affected compared with those in other conditions. Additionally, seasonal or perennial AR patients exhibited different cytokine profiles and proportions of memory T-cell subsets. Conclusions In this study, we illuminated the respective characteristics of immune responses in AR, ACD, and AR combined with ACD. Meanwhile, we discovered that the PAR and SAR patients possessed different cytokine profiles and T-cell compartments. It suggested that these allergic conditions belong to different disease entities. Characterizing the detailed immune changes in these allergic diseases would help to develop proper treatments targeting particular immune elements in different allergic diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s13223-022-00646-6.
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Zhang W, Xie B, Liu M, Wang Y. Associations between sensitisation to allergens and allergic diseases: a hospital-based case-control study in China. BMJ Open 2022; 12:e050047. [PMID: 35105568 PMCID: PMC8808394 DOI: 10.1136/bmjopen-2021-050047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES To assess the associations of sensitisation to common allergens with atopic dermatitis, allergic rhinitis and allergic asthma in adults. DESIGN Case-control study. SETTING Data were collected from the First Affiliated Hospital of Harbin Medical University in Harbin, China. PARTICIPANTS Cases were 5111 patients with physician-diagnosed atopic dermatitis (n=2631), allergic asthma (n=1320) and allergic rhinitis (n=1160) recruited from the department of allergy from March 2009 to December 2017. Controls were 2576 healthy adults who underwent physical examination at the same hospital during the same period. MAIN OUTCOME MEASURES Specific IgE levels to 16 common food, indoor and outdoor allergens were assessed in all participants. Adjusted ORs and 95% CIs for the association between allergen sensitisation and allergic diseases were estimated using multivariate logistic regression. RESULTS The prevalence of allergen sensitisation was higher in patients with atopic dermatitis (indoor=17.14%, outdoor=12.85%, food=21.44%), allergic rhinitis (indoor=23.18%, outdoor=26.81%, food=8.94%) and allergic asthma (indoor=24.65%, outdoor=16.46%, food=14.31%) compared with controls (indoor=11.03%, outdoor=6.84%, food=5.83%). After adjustment for potential confounding variables, there was a dose-response relevance between the levels of allergen-specific IgE and allergic diseases (p trend <0.0001). The number of allergens to which a patient was sensitised increased the risk of allergic diseases (atopic dermatitis: highest adjusted OR=4.28, 95% CI 2.57 to 7.11; allergic rhinitis: highest adjusted OR=13.00, 95% CI 3.76 to 45.00; allergic asthma: OR=2.37, 95% CI 1.67 to 3.37). CONCLUSION There was a dose-response relevance between levels of allergen-specific IgE and allergic diseases' prevalence, and multiple sensitisations increased the risk of allergic diseases. This study provides evidence for the prophylaxis of allergic diseases.
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Affiliation(s)
- Wei Zhang
- Department of Biostatistics, Harbin Medical University, Harbin, Heilongjiang, China
| | - Biao Xie
- Department of Biostatistics, Chongqing Medical University, Chongqing, Sichuan, China
| | - Meina Liu
- Department of Biostatistics, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yupeng Wang
- Department of Biostatistics, Harbin Medical University, Harbin, Heilongjiang, China
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Qurashi TA, Shah A, Bhat GA, Khan MS, Rasool R, Mudassar S. Atopy in Kashmir-validation from a case control study with respect to IgE and Interleukin genes. ALLERGY, ASTHMA, AND CLINICAL IMMUNOLOGY : OFFICIAL JOURNAL OF THE CANADIAN SOCIETY OF ALLERGY AND CLINICAL IMMUNOLOGY 2021; 17:119. [PMID: 34814942 PMCID: PMC8609820 DOI: 10.1186/s13223-021-00623-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 11/05/2021] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Increased levels of serum Immunoglobulin-E (IgE) and different genetic variants of cytokines are common biochemical manifestation in Allergy. The current study was aimed to study the association of IgE and different variants of Interleukin-4 (IL-4), and Interleukin-13 (IL-13) genes with different kind of allergies. METHODS A pre-tested questionnaire was used to collect all the dietary, life style and clinical details by a trained staff. A blood sample of 2 ml each was collected in coagulated and anti-coagulated vials. DNA and serum samples were extracted and stored until further use. Serum IgE were estimated by ELISA while as the genotypic analysis was done by PCR-RFLP methods. RESULTS Statistically a significant difference of serum IgE levels were observed among cases and controls (P < 0.05). The observed significant difference of serum IgE levels were retained among subjects who also harboured variant genotypes of IL-4 and IL-13 genes (P < 0.05). Additionally, the above genetic variants significantly modified the risk of allergy when stratification was done based on various clinical characteristics. CONCLUSION Our study suggests that increased IgE levels and in association with variant forms of IL-4 and IL-13 genes are significantly associated with different types of allergies in study population.
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Affiliation(s)
- Taha Ashraf Qurashi
- Department of Clinical Biochemistry, Sher-I-Kashmir Institute of Medical Sciences, Srinagar, 190011, India
| | - Aaliya Shah
- Department of Biochemistry, SKIMS Medical College, Srinagar, 190006, India
| | - Gulzar Ahmad Bhat
- Department of Clinical Biochemistry, Sher-I-Kashmir Institute of Medical Sciences, Srinagar, 190011, India
| | - Mosin Saleem Khan
- Department of Clinical Biochemistry, Sher-I-Kashmir Institute of Medical Sciences, Srinagar, 190011, India
| | - Roohi Rasool
- Department of Immunology and Molecular Medicine, SKIMS, Srinagar, 190011, India
| | - Syed Mudassar
- Department of Clinical Biochemistry, Sher-I-Kashmir Institute of Medical Sciences, Srinagar, 190011, India.
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Ryu J, Kim S, Song J, Kim D, Keum N, Jang W, Bae H, Kwon Y. Fabrication of Microarrays for the Analysis of Serological Antibody Isotypes against Food Antigens. SENSORS 2019; 19:s19183893. [PMID: 31509969 PMCID: PMC6766807 DOI: 10.3390/s19183893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/06/2019] [Accepted: 09/07/2019] [Indexed: 12/12/2022]
Abstract
Food intolerance is delayed adverse food reactions which follow consumption of specific foods. The underlying mechanisms are not well understood, but food intolerance is often considered as a type 2 hypersensitivity reaction mediated by immunoglobulin G (IgG) antibody. To understand the causes of food intolerance, it is important to investigate sensitization patterns of food-specific IgGs (sIgG) in relation to dietary patterns and physical conditions. Conventional approaches to measure serological IgGs often require large volumes of serum, thus are not suitable for highly multiplexed assays. To overcome this impracticality, we developed a highly sensitive method to screen the sIgGs and other antibody isotypes against 66 antigens with minimal amount of serums. We prepared a microarray by immobilizing food antigens on activated glass slides. Human sera and their dietary information were obtained from 30 subjects. Aliquots (200 nl) of sera were analyzed against 66 food antigens in parallel. sIgG levels were determined and analyzed in relation to subjects' dietary patterns. The levels of antibody isotypes were also examined to understand the relationship between allergy and food intolerance. The developed microarray showed exceptional performances in antibody screening and demonstrated the potential to be used as an automated assay system.
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Affiliation(s)
- Jeahee Ryu
- Department of Biomedical Engineering, Dongguk University, Seoul 04620, Korea.
| | - Soyoun Kim
- Department of Biomedical Engineering, Dongguk University, Seoul 04620, Korea.
| | - Jaeseung Song
- Department of Life Science, Dongguk University, Seoul 04620, Korea.
| | - Daeun Kim
- Department of Life Science, Dongguk University, Seoul 04620, Korea.
| | - Narae Keum
- Department of Sasang Constitutional Medicine, Dongguk University, Gyeongju 38066, Korea.
| | - Wonhee Jang
- Department of Life Science, Dongguk University, Seoul 04620, Korea.
| | - Hyosang Bae
- Department of Sasang Constitutional Medicine, Dongguk University, Gyeongju 38066, Korea.
| | - Youngeun Kwon
- Department of Biomedical Engineering, Dongguk University, Seoul 04620, Korea.
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New findings, pathophysiology, and antigen analysis in pollen-food allergy syndrome. Curr Opin Allergy Clin Immunol 2019; 19:218-223. [DOI: 10.1097/aci.0000000000000533] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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