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Liu B, Wang Y, Han G, Zhu M. Tolerogenic dendritic cells in radiation-induced lung injury. Front Immunol 2024; 14:1323676. [PMID: 38259434 PMCID: PMC10800505 DOI: 10.3389/fimmu.2023.1323676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/15/2023] [Indexed: 01/24/2024] Open
Abstract
Radiation-induced lung injury is a common complication associated with radiotherapy. It is characterized by early-stage radiation pneumonia and subsequent radiation pulmonary fibrosis. However, there is currently a lack of effective therapeutic strategies for radiation-induced lung injury. Recent studies have shown that tolerogenic dendritic cells interact with regulatory T cells and/or regulatory B cells to stimulate the production of immunosuppressive molecules, control inflammation, and prevent overimmunity. This highlights a potential new therapeutic activity of tolerogenic dendritic cells in managing radiation-induced lung injury. In this review, we aim to provide a comprehensive overview of tolerogenic dendritic cells in the context of radiation-induced lung injury, which will be valuable for researchers in this field.
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Affiliation(s)
| | - Yilong Wang
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
| | | | - Maoxiang Zhu
- Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
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2
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Ivory K, Angotti R, Messina M, Bonente D, Paternostro F, Gulisano M, Nicoletti C. Alteration of Immunoregulatory Patterns and Survival Advantage of Key Cell Types in Food Allergic Children. Cells 2023; 12:2736. [PMID: 38067164 PMCID: PMC10706629 DOI: 10.3390/cells12232736] [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: 09/09/2023] [Revised: 11/15/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
All allergic responses to food indicate the failure of immunological tolerance, but it is unclear why cow's milk and egg (CME) allergies resolve more readily than reactivity to peanuts (PN). We sought to identify differences between PN and CME allergies through constitutive immune status and responses to cognate and non-cognate food antigens. Children with confirmed allergy to CME (n = 6) and PN (n = 18) and non-allergic (NA) (n = 8) controls were studied. Constitutive secretion of cytokines was tested in plasma and unstimulated mononuclear cell (PBMNC) cultures. Blood dendritic cell (DC) subsets were analyzed alongside changes in phenotypes and soluble molecules in allergen-stimulated MNC cultures with or without cytokine neutralization. We observed that in allergic children, constitutively high plasma levels IL-1β, IL-2, IL-4, IL-5 and IL-10 but less IL-12p70 than in non-allergic children was accompanied by the spontaneous secretion of sCD23, IL-1β, IL-2, IL-4, IL-5, IL-10, IL-12p70, IFN-γ and TNF-α in MNC cultures. Furthermore, blood DC subset counts differed in food allergy. Antigen-presenting cell phenotypic abnormalities were accompanied by higher B and T cell percentages with more Bcl-2 within CD69+ subsets. Cells were generally refractory to antigenic stimulation in vitro, but IL-4 neutralization led to CD152 downregulation by CD4+ T cells from PN allergic children responding to PN allergens. Canonical discriminant analyses segregated non-allergic and allergic children by their cytokine secretion patterns, revealing differences and areas of overlap between PN and CME allergies. Despite an absence of recent allergen exposure, indication of in vivo activation, in vitro responses independent of challenging antigen and the presence of unusual costimulatory molecules suggest dysregulated immunity in food allergy. Most importantly, higher Bcl-2 content within key effector cells implies survival advantage with the potential to mount abnormal responses that may give rise to the manifestations of allergy. Here, we put forward the hypothesis that the lack of apoptosis of key immune cell types might be central to the development of food allergic reactions.
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Affiliation(s)
| | - Rossella Angotti
- Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (R.A.); (M.M.)
| | - Mario Messina
- Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (R.A.); (M.M.)
| | - Denise Bonente
- Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy;
| | - Ferdinando Paternostro
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Firenze, Italy; (F.P.); (M.G.)
| | - Massimo Gulisano
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Firenze, Italy; (F.P.); (M.G.)
| | - Claudio Nicoletti
- Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy;
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Firenze, Italy; (F.P.); (M.G.)
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Barni S, Mori F, Giovannini M, Liotti L, Mastrorilli C, Pecoraro L, Saretta F, Castagnoli R, Arasi S, Caminiti L, Gelsomino M, Klain A, del Giudice MM, Novembre E. Allergic Proctocolitis: Literature Review and Proposal of a Diagnostic-Therapeutic Algorithm. Life (Basel) 2023; 13:1824. [PMID: 37763228 PMCID: PMC10533178 DOI: 10.3390/life13091824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 08/22/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
Allergic proctocolitis (AP) is a benign condition, frequent in childhood, that is classified as a non-IgE-mediated food allergy. The prevalence is unknown; however, its frequency appears to be increasing, especially in exclusively breastfed infants. Clinical manifestations typically begin in the first few months of life with the appearance of bright red blood (hematochezia), with or without mucus, in the stool of apparently healthy, thriving infants. Most cases of AP are caused by cow's milk proteins; however, other allergens, such as soy, egg, corn, and wheat, may be potential triggers. Diagnosis is based on the patient's clinical history and on the resolution of signs and symptoms with the elimination of the suspected food antigen from the diet and their reappearance when the food is reintroduced into the diet. The treatment of AP is based on an elimination diet of the trigger food, with resolution of the symptoms within 72-96 h from the beginning of the diet. The prognosis of AP is good; it is a self-limiting condition, because most children can tolerate the trigger food within one year of life, with an excellent long-term prognosis. The purpose of this review is to provide an update on the current knowledge and recommendations in epidemiological, diagnostic, and therapeutic terms to the pediatricians, allergists, and gastroenterologists who may find themselves managing a patient with AP.
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Affiliation(s)
- Simona Barni
- Allergy Unit, Meyer Children’s Hospital IRCCS, 50139 Florence, Italy; (S.B.); (F.M.); (M.G.); (E.N.)
| | - Francesca Mori
- Allergy Unit, Meyer Children’s Hospital IRCCS, 50139 Florence, Italy; (S.B.); (F.M.); (M.G.); (E.N.)
| | - Mattia Giovannini
- Allergy Unit, Meyer Children’s Hospital IRCCS, 50139 Florence, Italy; (S.B.); (F.M.); (M.G.); (E.N.)
- Department of Health Sciences, University of Florence, 50139 Florence, Italy
| | - Lucia Liotti
- Pediatric Unit, Department of Mother and Child Health, Salesi Children’s Hospital, 60123 Ancona, Italy;
| | - Carla Mastrorilli
- Pediatric and Emergency Department, Pediatric Hospital Giovanni XXIII, AOU Policlinic of Bari, 70126 Bari, Italy;
| | - Luca Pecoraro
- Pediatric Unit, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, 37126 Verona, Italy;
| | - Francesca Saretta
- Pediatric Department, Latisana-Palmanova Hospital, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy;
| | - Riccardo Castagnoli
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
- Pediatric Clinic, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Stefania Arasi
- Translational Research in Pediatric Specialties Area, Division of Allergy, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy;
| | - Lucia Caminiti
- Allergy Unit, Department of Pediatrics, AOU Policlinico Gaetano Martino, 98124 Messina, Italy;
| | - Mariannita Gelsomino
- Department of Life Sciences and Public Health, Pediatric Allergy Unit, University Foundation Policlinico Gemelli IRCCS, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Angela Klain
- Department of Woman, Child and General and Specialized Surgery, University of Campania Luigi Vanvitelli, 80138 Naples, Italy; (A.K.); (M.M.d.G.)
| | - Michele Miraglia del Giudice
- Department of Woman, Child and General and Specialized Surgery, University of Campania Luigi Vanvitelli, 80138 Naples, Italy; (A.K.); (M.M.d.G.)
| | - Elio Novembre
- Allergy Unit, Meyer Children’s Hospital IRCCS, 50139 Florence, Italy; (S.B.); (F.M.); (M.G.); (E.N.)
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Braun C, Azzano P, Gingras-Lessard F, Roy É, Samaan K, Graham F, Paradis L, Des Roches A, Bégin P. Abatacept to induce remission of peanut allergy during oral immunotherapy (ATARI): protocol for a phase 2a randomized controlled trial. Front Med (Lausanne) 2023; 10:1198173. [PMID: 37448803 PMCID: PMC10336224 DOI: 10.3389/fmed.2023.1198173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/06/2023] [Indexed: 07/15/2023] Open
Abstract
Context While oral immunotherapy (OIT) has been shown to promote the remission of mild peanut allergy in young children, there is still an unmet need for a disease-modifying intervention for older patients and those with severe diseases. In mice models, abatacept, a cytotoxic T lymphocyte-associated antigen-4 (CTLA-4) immunoglobulin fusion protein, has been shown to promote immune tolerance to food when used as an adjuvant to allergen immunotherapy. The goal of this study is to explore the potential efficacy of abatacept in promoting immune tolerance to food allergens during OIT in humans. Methods In this phase 2a proof-of-concept study (NCT04872218), 14 peanut-allergic participants aged from 14 to 55 years will be randomized at a 1:1 ratio to abatacept vs. placebo for the first 24 weeks of a peanut OIT treatment (target maintenance dose of 300 mg peanut protein). The primary outcome will be the suppression of the OIT-induced surge in peanut-specific IgE/total IgE at 24 weeks, relative to the baseline. Sustained unresponsiveness will be assessed as a secondary outcome starting at 36 weeks by observing incremental periods of peanut avoidance followed by oral food challenges. Discussion This is the first study assessing the use of abatacept as an adjuvant to allergen immunotherapy in humans. As observed in preclinical studies, the ability of abatacept to modulate the peanut-specific immune response during OIT will serve as a proxy outcome for the development of clinical tolerance, given the small sample size. The study will also test a new patient-oriented approach to sustained tolerance testing in randomized controlled trials.
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Affiliation(s)
- Camille Braun
- Department of Pediatrics, Section of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
- Department of Pediatrics, Pneumology, Allergy, Cystic Fibrosis, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Bron, France
- Centre International de Recherche en Infectiologie, INSERM U1111, CNRS UMR 5308, Université Lyon 1, ENS de Lyon, Lyon, France
| | - Pauline Azzano
- Department of Pediatric Hepatogastroenterology and Nutrition, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Bron, France
| | - Florence Gingras-Lessard
- Department of Pediatrics, Section of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Émilie Roy
- Department of Pediatrics, Section of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Kathryn Samaan
- Department of Pediatrics, Section of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - François Graham
- Department of Pediatrics, Section of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
- Department of Medicine, Section of Allergy and Clinical Immunology, Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - Louis Paradis
- Department of Pediatrics, Section of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
- Department of Medicine, Section of Allergy and Clinical Immunology, Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - Anne Des Roches
- Department of Pediatrics, Section of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Philippe Bégin
- Department of Pediatrics, Section of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
- Department of Medicine, Section of Allergy and Clinical Immunology, Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
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Zuurveld M, Díaz CB, Redegeld F, Folkerts G, Garssen J, van’t Land B, Willemsen LE. An advanced in vitro human mucosal immune model to predict food sensitizing allergenicity risk: A proof of concept using ovalbumin as model allergen. Front Immunol 2023; 13:1073034. [PMID: 36700233 PMCID: PMC9869142 DOI: 10.3389/fimmu.2022.1073034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 12/19/2022] [Indexed: 01/12/2023] Open
Abstract
Background The global demand of sustainable food sources leads to introduction of novel foods on the market, which may pose a risk of inducing allergic sensitization. Currently there are no validated in vitro assays mimicking the human mucosal immune system to study sensitizing allergenicity risk of novel food proteins. The aim of this study was to introduce a series of sequential human epithelial and immune cell cocultures mimicking key immune events after exposure to the common food allergen ovalbumin from intestinal epithelial cell (IEC) activation up to mast cell degranulation. Methods This in vitro human mucosal food sensitizing allergenicity model combines crosstalk between IEC and monocyte-derived dendritic cells (moDC), followed by coculture of the primed moDCs with allogenic naïve CD4+ T cells. During subsequent coculture of primed CD4+ T cells with naïve B cells, IgE isotype-switching was monitored and supernatants were added to primary human mast cells to investigate degranulation upon IgE crosslinking. Mediator secretion and surface marker expression of immune cells were determined. Results Ovalbumin activates IEC and underlying moDCs, both resulting in downstream IgE isotype-switching. However, only direct exposure of moDCs to ovalbumin drives Th2 polarization and a humoral B cell response allowing for IgE mediated mast cell degranulation, IL13 and IL4 release in this sequential DC-T cell-B cell-mast cell model, indicating also an immunomodulatory role for IEC. Conclusion This in vitro coculture model combines multiple key events involved in allergic sensitization from epithelial cell to mast cell, which can be applied to study the allergic mechanism and sensitizing capacity of proteins.
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Affiliation(s)
- Marit Zuurveld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands,*Correspondence: Marit Zuurveld, ; Linette E.M. Willemsen,
| | - Cristina Bueno Díaz
- Chemical Biology and Drug Discovery Group, Department of Pharmacological Sciences, Utrecht University, Utrecht, Netherlands
| | - Frank Redegeld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Gert Folkerts
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands,Immunology Platform, Danone Nutricia Research B.V., Utrecht, Netherlands
| | - Belinda van’t Land
- Immunology Platform, Danone Nutricia Research B.V., Utrecht, Netherlands,Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Linette E.M. Willemsen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands,*Correspondence: Marit Zuurveld, ; Linette E.M. Willemsen,
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Involvement of MicroRNA-27a-3p in the Licorice-Induced Alteration of Cd28 Expression in Mice. Genes (Basel) 2022; 13:genes13071143. [PMID: 35885926 PMCID: PMC9317804 DOI: 10.3390/genes13071143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 02/04/2023] Open
Abstract
Licorice has previously been shown to affect gene expression in cells; however, the underlying mechanisms remain to be clarified. We analyzed the microRNA expression profile of serum from mice treated by gavage with licorice decoction, and obtained 11 differentially expressed microRNAs (DEmiRNAs). We also screened differentially expressed genes (DEgenes) based on RNA-Seq data, and 271 common genes were identified by intersection analysis of the predicted target genes of 11 DEmiRNAs and the DEgenes. The miRNA–gene network showed that most of the hub genes were immune-related. KEGG enrichment analysis of the 271 genes identified three significant pathways, and the 21 genes involved in these three pathways, and the 11 DEmiRNAs, were constructed into a miRNA pathway–target gene network, in which mmu-miR-27a-3p stood out. Compared to ImmPort, there were 13 immune genes within the above group of 21 genes, and three intersected with the mmu-miR-27a-3p predicted target genes, Cd28, Grap2 and Cxcl12, of which the expression of Cd28 changed most significantly. We confirmed the regulation of Cd28 by mmu-miR-27a-3p using a dual-luciferase assay, and further confirmed that overexpression of mmu-miR-27a-3p could significantly downregulate the expression of Cd28 in lymphocytes. These results indicate that mmu-miR-27a-3p could be involved in the licorice-mediated regulation of the expression of Cd28 in mice.
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Krempski JW, Lama JK, Iijima K, Kobayashi T, Matsunaga M, Kita H. A Mouse Model of the “LEAP” Study Reveals a Role for CTLA-4 in Preventing Peanut Allergy Induced by Environmental Peanut Exposure. J Allergy Clin Immunol 2022; 150:425-439.e3. [PMID: 35288169 PMCID: PMC9378358 DOI: 10.1016/j.jaci.2022.02.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 01/10/2022] [Accepted: 02/03/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND A human study, Learning Early About Peanut Allergy (LEAP), showed that early introduction of peanut products decreases the prevalence of peanut allergy among children. However, the immunologic mechanisms mediating the protective effects of consuming peanut products are not well understood. OBJECTIVE The objective was to develop a mouse model that simulates the LEAP study and investigate the underlying mechanisms for the study observations. METHODS Adult naive BALB/c mice were fed a commercial peanut butter product (Skippy) or buffer control and concomitantly exposed to peanut flour through the airway or skin to mimic environmental exposure. The animals were analyzed for anaphylactic reaction and by molecular and immunologic approaches. RESULTS After exposure to peanut flour through the airway or skin, naive mice developed peanut allergy, as demonstrated by acute and systemic anaphylaxis in response to challenge with peanut extract. Ingestion of Skippy, however, nearly abolished the increase in peanut-specific IgE and IgG and protected animals from developing anaphylaxis. Skippy-fed mice showed reduced numbers of T follicular helper (Tfh) cells and germinal center B cells in their draining lymph nodes, and single-cell RNA sequencing revealed a CD4+ T-cell population expressing cytotoxic T lymphocyte-associated protein 4 (CTLA-4) in these animals. Critically, blocking CTLA-4 with antibody increased levels of peanut-specific antibodies and reversed the protective effects of Skippy. CONCLUSION Ingestion of a peanut product protects mice from peanut allergy induced by environmental exposure to peanuts, and the CTLA-4 pathway, which regulates Tfh cell responses, likely plays a pivotal role in this protection.
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Zhou C, Chen LL, Lu RQ, Ma WW, Xiao R. Alteration of Intestinal Microbiota Composition in Oral Sensitized C3H/HeJ Mice Is Associated With Changes in Dendritic Cells and T Cells in Mesenteric Lymph Nodes. Front Immunol 2021; 12:631494. [PMID: 34177885 PMCID: PMC8222730 DOI: 10.3389/fimmu.2021.631494] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/12/2021] [Indexed: 12/14/2022] Open
Abstract
This research aimed to investigate the allergic reaction of C3H/HeJ mice after sensitization with ovalbumin (OVA) without any adjuvant and to analyze the association between intestinal microbiota and allergy-related immune cells in mesenteric lymph nodes (MLN). The allergic responses of C3H/HeJ mice orally sensitized with OVA were evaluated, and immune cell subsets in spleen and MLN and cytokines were also detected. The intestinal bacterial community structure was analyzed, followed by Spearman correlation analysis between changed gut microbiota species and allergic parameters. Sensitization induced a noticeable allergic response to the gavage of OVA without adjuvant. Increased levels of Th2, IL-4, CD103+CD86+ DC, and MHCII+CD86+ DC and decreased levels of Th1, Treg, IFN-γ, TGF-β1, and CD11C+CD103+ DC were observed in allergic mice. Furthermore, families of Lachnospiraceae, Clostridiaceae_1, Ruminococcaceae, and peprostreptococcaceae, all of which belonging to the order Clostridiales, were positively related to Treg and CD11C+CD103+ DC, while they were negatively related to an allergic reaction, levels of Th2, CD103+CD86+ DC, and MHCII+CD86+ DC in MLN. The family of norank_o_Mollicutes_RF39 belonging to the order Mollicutes_RF39 was similarly correlated with allergic reaction and immune cells in MLN of mice. To sum up, allergic reactions and intestinal flora disturbances could be induced by OVA oral administration alone. The orders of Clostridiales and Mollicutes_RF39 in intestinal flora are positively correlated with levels of Treg and CD11C+CD103+ DC in MLN of mice.
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Affiliation(s)
- Cui Zhou
- Beijing Key Laboratory of Environmental Toxicology, School of Public Health, Capital Medical University, Beijing, China
| | - Ling-Ling Chen
- Nutritional Department, Handan First Hospital, Handan, China
| | - Rui-Qi Lu
- School of Basic Medicine, Capital Medical University, Beijing, China
| | - Wei-Wei Ma
- Beijing Key Laboratory of Environmental Toxicology, School of Public Health, Capital Medical University, Beijing, China
| | - Rong Xiao
- Beijing Key Laboratory of Environmental Toxicology, School of Public Health, Capital Medical University, Beijing, China
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Mennini M, Fiocchi AG, Cafarotti A, Montesano M, Mauro A, Villa MP, Di Nardo G. Food protein-induced allergic proctocolitis in infants: Literature review and proposal of a management protocol. World Allergy Organ J 2020; 13:100471. [PMID: 33072241 PMCID: PMC7549143 DOI: 10.1016/j.waojou.2020.100471] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 09/12/2020] [Accepted: 09/14/2020] [Indexed: 02/06/2023] Open
Abstract
Food protein-induced allergic proctocolitis (FPIAP) is a condition characterized by inflammatory changes in the distal colon in response to one or more foreign food proteins because of immune-mediated reactions. FPIAP prevalence estimates range widely from 0.16% in healthy children and 64% in patients with blood in stools. In clinical practice, FPIAP is diagnosed when patients respond positively to the elimination of a suspected triggering food allergen. Nevertheless, significant proportions of infants get misdiagnosed with IgE mediated allergy and undergo unnecessary dietary changes. Diagnosis is based on clinical symptoms, a good response to an allergen-free diet and the recurrence of symptoms during the “allergy challenge test”. Sometimes clinical features may be non-specific and the etiology of rectal bleeding in childhood may be heterogeneous. Therefore, it is crucial to exclude a variety of other possible causes of rectal bleeding in the pediatric age group, including infection, anal fissure, intestinal intussusception and, in infants, necrotizing enterocolitis and very early onset inflammatory bowel disease. The diagnostic workup includes in those cases invasive procedures such as sigmoidoscopy and colonoscopy with biopsies. The high prevalence of FPIAP contrasts with the lack of known information about the pathogenesis of this condition. For this reason and due to the absence of a review of the evidence, a literature review appears necessary to clarify some aspects of allergic colitis. The aim of the review is to fill this gap and to lay the foundations for a subsequent evidence-based approach to the condition.
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Affiliation(s)
- Maurizio Mennini
- Multifactorial and Systemic Diseases Research Area, Predictive and Preventive Medicine Research Unit, Division of Allergy Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Alessandro Giovanni Fiocchi
- Multifactorial and Systemic Diseases Research Area, Predictive and Preventive Medicine Research Unit, Division of Allergy Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Arianna Cafarotti
- Multifactorial and Systemic Diseases Research Area, Predictive and Preventive Medicine Research Unit, Division of Allergy Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Marilisa Montesano
- Chair of Pediatrics, NESMOS Department, Faculty of Medicine and Psychology, Sapienza University of Rome, Sant’Andrea University Hospital, Rome, Italy
| | - Angela Mauro
- Department of Paediatrics, Santobono-Pausilipon Children's Hospital, Naples, Italy
| | - Maria Pia Villa
- Chair of Pediatrics, NESMOS Department, Faculty of Medicine and Psychology, Sapienza University of Rome, Sant’Andrea University Hospital, Rome, Italy
| | - Giovanni Di Nardo
- Chair of Pediatrics, NESMOS Department, Faculty of Medicine and Psychology, Sapienza University of Rome, Sant’Andrea University Hospital, Rome, Italy
- Corresponding author. Sant’Andrea University, Hospital Via di Grottarossa 1035-1039, 00189, Rome, Italy.
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Cetinkaya PG, Ocak M, Sahiner UM, Sekerel BE, Soyer O. Food protein-induced allergic proctocolitis may have distinct phenotypes. Ann Allergy Asthma Immunol 2020; 126:75-82. [PMID: 32853787 DOI: 10.1016/j.anai.2020.08.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 07/20/2020] [Accepted: 08/20/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Food protein-induced allergic proctocolitis (FPIAP) is a non-immunoglobulin E (IgE)-mediated food allergy, which presents with bloody mucoid stool in infants. Although IgE-mediated allergy and sensitizations to offending foods have been described in other non-IgE-mediated food allergies, it has not been investigated in FPIAP. OBJECTIVE To investigate IgE-mediated allergy and sensitization to offending foods in FPIAP. METHODS Patients (n = 204) were retrospectively recruited and grouped as FPIAP (n = 180; FPIAP with or without the symptoms of IgE-mediated food hypersensitivity to offending and nonoffending foods at initial consultation), FPIAP-IgE sensitization to offending foods (n = 17), and FPIAP-transition to IgE-mediated allergy to offending foods (n = 7). The study was performed in accordance with the protocol approved by the local ethical committee of the Hacettepe University. RESULTS The median age of onset of symptoms and the development of tolerance was 2 months (interquartile range [IQR], 1.0-3.0) and 12 months (IQR, 10.0-14.0), respectively, and of the patients with skin prick test or serum specific IgE tests (n = 196), 38 (19.4%) had evidence of IgE sensitization to offending foods at the initial consultation or during follow-up; 17 (8.6%) had IgE sensitization, 7 (3.6%) indicated a transition to IgE-mediated allergy to FPIAP-induced foods. The median age of tolerance development of the FPIAP-transition group (19 months, IQR, 18.0-29.0) was significantly later than that of the FPIAP group (11 months, IQR, 10.0-14.0; P < .001) and the FPIAP-IgE sensitization group (11.0 months, IQR, 9.5-12.0; P < .001). Tolerance was observed within the study period in almost all the patients. CONCLUSION Children with FPIAP may have sensitization or develop IgE-mediated allergy over time to offending foods. In addition, IgE sensitization in FPIAP does not have an unfavorable effect on tolerance development; however, the transition to an IgE-mediated phenotype may delay tolerance for a brief time.
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Affiliation(s)
- Pınar Gur Cetinkaya
- Division of Pediatric Allergy and Asthma Unit, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Melike Ocak
- Division of Pediatric Allergy and Asthma Unit, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Umit Murat Sahiner
- Division of Pediatric Allergy and Asthma Unit, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Bulent Enis Sekerel
- Division of Pediatric Allergy and Asthma Unit, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Ozge Soyer
- Division of Pediatric Allergy and Asthma Unit, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Sıhhiye, Ankara, Turkey.
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11
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Targeting Multiple Myeloma through the Biology of Long-Lived Plasma Cells. Cancers (Basel) 2020; 12:cancers12082117. [PMID: 32751699 PMCID: PMC7466116 DOI: 10.3390/cancers12082117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 07/17/2020] [Indexed: 12/20/2022] Open
Abstract
Multiple myeloma (MM) is a hematological malignancy of terminally differentiated bone marrow (BM) resident B lymphocytes known as plasma cells (PC). PC that reside in the bone marrow include a distinct population of long-lived plasma cells (LLPC) that have the capacity to live for very long periods of time (decades in the human population). LLPC biology is critical for understanding MM disease induction and progression because MM shares many of the same extrinsic and intrinsic survival programs as LLPC. Extrinsic survival signals required for LLPC survival include soluble factors and cellular partners in the bone marrow microenvironment. Intrinsic programs that enhance cellular fidelity are also required for LLPC survival including increased autophagy, metabolic fitness, the unfolded protein response (UPR), and enhanced responsiveness to endoplasmic reticulum (ER) stress. Targeting LLPC cell survival mechanisms have led to standard of care treatments for MM including proteasome inhibition (Bortezomib), steroids (Dexamethasone), and immunomodulatory drugs (Lenalidomide). MM patients that relapse often do so by circumventing LLPC survival pathways targeted by treatment. Understanding the mechanisms by which LLPC are able to survive can allow us insight into the treatment of MM, which allows for the enhancement of therapeutic strategies in MM both at diagnosis and upon patient relapse.
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Patel D, Goruk S, Newell M, Chen G, Richard C, Field CJ. Feeding a Bioactive Oil Enriched in Stearidonic Acid during Early Life Influences Immune System Maturation in Neonatal Sprague-Dawley Rats. J Nutr 2020; 150:606-615. [PMID: 31722423 DOI: 10.1093/jn/nxz255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 07/09/2019] [Accepted: 09/26/2019] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Long-chain n-3 PUFAs (LCPUFAs) improve immune development and reduce atopic disease risk in infants. Stearidonic acid (SDA) can be a substrate for biosynthesis of n-3 LCPUFAs. OBJECTIVE We aimed to determine the effect of feeding an SDA-enriched diet during suckling and weaning on offspring immunity and ability to develop oral tolerance (OT). METHODS Pregnant Sprague-Dawley rats were randomly assigned to consume either SDA (3 g SDA/100 g fat) or a control (no SDA) diet, 5 d before parturition and through lactation (21 d). For the OT treatment, 10-d-old pups were fed ovalbumin (Ova; 200 μL of 8 mg/mL) or placebo daily for 5 d. At 21 d, pups (both sexes) were weaned to their respective maternal diet until 6 wk of age or killed. Systemic immunization was induced using Ova (in 3-wk-old pups) or Ova + adjuvant (in 6-wk-old pups). The effect of suckling diet (in 3-wk-old pups) or weaning diet (in 6-wk-old pups) and OT treatment on immune function (main outcome) in spleen and blood was compared using 2-factor ANOVA. RESULTS An SDA-enriched maternal diet, compared with the control diet, resulted in higher plasma phospholipid (PL) EPA (15 times higher), docosapentaenoic acid (DPA; 3 times higher), and DHA (1.3 times higher) content in 3-wk-old pups, accompanied by higher B-cell function [plasma ovalbumin-specific IgG1 (Ova-IgG1), 2 times higher] ( P < 0.05). Compared with pups fed a control diet, the splenocytes from these pups had more (23%) helper T (Th) cells (CD3+CD4+) and activated (12%) Th cells (CD4+CD28+) (P < 0.02) than controls. At 6 wk, the SDA group had 30% more CD4+CD25+ splenocytes, and when stimulated ex vivo with LPS, produced less inflammatory IL-6 (50%) and TNF-α (30%) and more immunoregulatory IL-10 (45%) cytokines (P < 0.05) than the control group. The Ova-exposed group had less (30%) plasma Ova-IgG1 than the placebo group. Splenocytes and plasma PLs from the 6-wk-old SDA group had more EPA (2x) and DPA (3.5x) (P < 0.05), but not DHA, than the control group. CONCLUSIONS Feeding SDA during lactation and weaning altered immune responses in directions believed to be beneficial.
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Affiliation(s)
- Dhruvesh Patel
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Susan Goruk
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Marnie Newell
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Guanqun Chen
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Caroline Richard
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Catherine J Field
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
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Yang H, Min J, Han XY, Li XY, Hu JW, Liu H, Cao MJ, Liu GM. Reduction of the histamine content and immunoreactivity of parvalbumin inDecapterus maruadsiby a Maillard reaction combined with pressure treatment. Food Funct 2018; 9:4897-4905. [DOI: 10.1039/c8fo01167b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aim of this study was to develop an effective method for decreasing the content of histamine and the immunoreactivity of parvalbumin inDecapterus maruadsi.
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Affiliation(s)
- Huang Yang
- College of Food and Biological Engineering
- Xiamen Key Laboratory of Marine Functional Food
- Fujian Provincial Engineering Technology Research Center of Marine Functional Food
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources
- Jimei University
| | - Juan Min
- College of Food and Biological Engineering
- Xiamen Key Laboratory of Marine Functional Food
- Fujian Provincial Engineering Technology Research Center of Marine Functional Food
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources
- Jimei University
| | - Xin-Yu Han
- College of Food and Biological Engineering
- Xiamen Key Laboratory of Marine Functional Food
- Fujian Provincial Engineering Technology Research Center of Marine Functional Food
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources
- Jimei University
| | - Xiao-Yan Li
- College of Food and Biological Engineering
- Xiamen Key Laboratory of Marine Functional Food
- Fujian Provincial Engineering Technology Research Center of Marine Functional Food
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources
- Jimei University
| | - Jia-Wei Hu
- College of Food and Biological Engineering
- Xiamen Key Laboratory of Marine Functional Food
- Fujian Provincial Engineering Technology Research Center of Marine Functional Food
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources
- Jimei University
| | - Hong Liu
- College of Food and Biological Engineering
- Xiamen Key Laboratory of Marine Functional Food
- Fujian Provincial Engineering Technology Research Center of Marine Functional Food
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources
- Jimei University
| | - Min-Jie Cao
- College of Food and Biological Engineering
- Xiamen Key Laboratory of Marine Functional Food
- Fujian Provincial Engineering Technology Research Center of Marine Functional Food
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources
- Jimei University
| | - Guang-Ming Liu
- College of Food and Biological Engineering
- Xiamen Key Laboratory of Marine Functional Food
- Fujian Provincial Engineering Technology Research Center of Marine Functional Food
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources
- Jimei University
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14
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Abstract
A key point for maintenance of the immune system homeostasis is the balance between the capacity to recognize and fight exogenous molecules and the capacity to avoid auto reactivity. The disruption of this balance induces the progression of several immune diseases such as autoimmune diseases, allergies, infections or cancer. A promising therapeutic approach to treat these diseases is immunotherapy. In cancer, both active and passive immunotherapies have been tested with promising results, such as the blocking of immunological checkpoints like CTLA-4 and PD-1. These treatments, in the market since a few years ago, aim to redirect the patient's immunological response by inhibiting the induction of regulatory T cells, both in the priming and effector phases. This strategy sheds light on the immunological mechanisms that control the regulatory response mediated by T cells and opens new lines of research into other immunological diseases such as allergy, in which the induction of a regulatory response is necessary to avoid allergic progression and which is the main objective of allergen-specific immunotherapies available today.
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15
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Bobrus-Chociej A, Daniluk U, Alifier M, Stasiak-Barmuta A, Kaczmarski MG. Alterations of lymphocyte subpopulations and TGF-β in children with transient or persistent cow’s milk allergy. FOOD AGR IMMUNOL 2017. [DOI: 10.1080/09540105.2017.1387234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Anna Bobrus-Chociej
- Department of Pediatrics, Gastroenterology and Allergology, Medical University of Bialystok, Bialystok, Poland
| | - Urszula Daniluk
- Department of Pediatrics, Gastroenterology and Allergology, Medical University of Bialystok, Bialystok, Poland
| | - Marek Alifier
- Department of Clinical Immunology, Medical University of Bialystok, Bialystok, Poland
| | - Anna Stasiak-Barmuta
- Department of Clinical Immunology, Medical University of Bialystok, Bialystok, Poland
| | - Maciej Gustaw Kaczmarski
- Department of Pediatrics, Gastroenterology and Allergology, Medical University of Bialystok, Bialystok, Poland
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16
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van Bilsen JHM, Sienkiewicz-Szłapka E, Lozano-Ojalvo D, Willemsen LEM, Antunes CM, Molina E, Smit JJ, Wróblewska B, Wichers HJ, Knol EF, Ladics GS, Pieters RHH, Denery-Papini S, Vissers YM, Bavaro SL, Larré C, Verhoeckx KCM, Roggen EL. Application of the adverse outcome pathway (AOP) concept to structure the available in vivo and in vitro mechanistic data for allergic sensitization to food proteins. Clin Transl Allergy 2017; 7:13. [PMID: 28507730 PMCID: PMC5429547 DOI: 10.1186/s13601-017-0152-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 05/03/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The introduction of whole new foods in a population may lead to sensitization and food allergy. This constitutes a potential public health problem and a challenge to risk assessors and managers as the existing understanding of the pathophysiological processes and the currently available biological tools for prediction of the risk for food allergy development and the severity of the reaction are not sufficient. There is a substantial body of in vivo and in vitro data describing molecular and cellular events potentially involved in food sensitization. However, these events have not been organized in a sequence of related events that is plausible to result in sensitization, and useful to challenge current hypotheses. The aim of this manuscript was to collect and structure the current mechanistic understanding of sensitization induction to food proteins by applying the concept of adverse outcome pathway (AOP). MAIN BODY The proposed AOP for food sensitization is based on information on molecular and cellular mechanisms and pathways evidenced to be involved in sensitization by food and food proteins and uses the AOPs for chemical skin sensitization and respiratory sensitization induction as templates. Available mechanistic data on protein respiratory sensitization were included to fill out gaps in the understanding of how proteins may affect cells, cell-cell interactions and tissue homeostasis. Analysis revealed several key events (KE) and biomarkers that may have potential use in testing and assessment of proteins for their sensitizing potential. CONCLUSION The application of the AOP concept to structure mechanistic in vivo and in vitro knowledge has made it possible to identify a number of methods, each addressing a specific KE, that provide information about the food allergenic potential of new proteins. When applied in the context of an integrated strategy these methods may reduce, if not replace, current animal testing approaches. The proposed AOP will be shared at the www.aopwiki.org platform to expand the mechanistic data, improve the confidence in each of the proposed KE and key event relations (KERs), and allow for the identification of new, or refinement of established KE and KERs.
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Affiliation(s)
| | | | | | | | | | - Elena Molina
- Instituto de Investigación en Ciencias de la Alimentación, Madrid, Spain
| | | | - Barbara Wróblewska
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Olsztyn, Poland
| | - Harry J Wichers
- Wageningen University and Research, Wageningen, The Netherlands
| | - Edward F Knol
- University Medical Center Utrecht, Utrecht, The Netherlands
| | | | | | | | | | - Simona L Bavaro
- Institute of Sciences of Food Production, National Research Council, Bari, Italy
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17
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Mihajlovic L, Radosavljevic J, Nordlund E, Krstic M, Bohn T, Smit J, Buchert J, Cirkovic Velickovic T. Peanut protein structure, polyphenol content and immune response to peanut proteins in vivo are modulated by laccase. Food Funct 2016; 7:2357-66. [DOI: 10.1039/c5fo01325a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Laccase cross-linking of peanut protein causes changes in the protein structure, phenolic composition and immunological properties of the treated peanut protein.
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Affiliation(s)
- L. Mihajlovic
- University of Belgrade
- Faculty of Chemistry
- Belgrade
- Serbia
| | | | | | - M. Krstic
- University of Belgrade
- Faculty of Chemistry
- Belgrade
- Serbia
| | - T. Bohn
- Centre de Recherche Public – Gabriel Lippmann
- Belvaux
- Luxembourg
| | - J. Smit
- Institute for Risk Assessment Sciences
- Utrecht University
- Utrecht
- Netherlands
| | - J. Buchert
- National Food Resources Institute (Luke)
- Helsinki
- Finland
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18
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Ozen A, Gulcan EM, Ercan Saricoban H, Ozkan F, Cengizlier R. Food Protein-Induced Non-Immunoglobulin E-Mediated Allergic Colitis in Infants and Older Children: What Cytokines Are Involved? Int Arch Allergy Immunol 2015; 168:61-8. [PMID: 26588792 DOI: 10.1159/000441471] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 09/29/2015] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Food protein-induced allergic proctocolitis (FPIAP) is mostly a non-immunoglobulin E-mediated disease where a T-cell-mediated reaction to cow's milk protein has been suggested. We determined the expression of transforming growth factor (TGF)-β, TGF-β receptor-1, tumor necrosis factor (TNF)-α, CD86, and CD23 on the colon mucosa to investigate their roles in the pathogenesis of the two subtypes of FPIAP, i.e. infantile FPIAP and FPIAP in older children. METHODS Group 1 comprised children with infantile FPIAP (age <6 months, n = 21), group 2 referred to FPIAP in older children (age >1.5 years, n = 7), and group 3 included children with juvenile hyperplastic polyps (n = 22). Immunohistochemical staining of colonic biopsy specimens was performed. RESULTS The expression of TNF-α was significantly higher in groups 1 and 2 compared to group 3. Group 2 patients had a significantly lower TGF-β expression compared to the other groups. The expression of CD86 was higher in group 1 than in group 3 (p = 0.012). Eosinophil counts per high-power field in the lamina propria were significantly correlated with CD86 expression (p = 0.026, r = 0.388). CONCLUSION Our results suggest that TNF-α is implicated in the pathogenesis of both types of FPIAP. The decreased activity of TGF-β receptor-1 accompanied by the increased expression of CD86 in infants and the decreased activity of TGF-β in older children appear to play a role in the development of FPIAP.
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Affiliation(s)
- Ahmet Ozen
- Division of Pediatric Allergy, Faculty of Medicine, Yeditepe University, Istanbul, Turkey
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19
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Guo X, Yasen H, Zhao F, Wang L, Sun M, Pang N, Wang X, Zhang Y, Ding J, Ma X. The effect of single course high dose dexamethasone on CD28/CTLA-4 balance in the treatment of patients with newly diagnosed primary immune thrombocytopenia. Hum Vaccin Immunother 2015. [PMID: 26211942 PMCID: PMC4962720 DOI: 10.1080/21645515.2015.1059975] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
To evaluate the effect of a single course of high dose dexamethasone (HD-DXM) on CD28 and CTLA-4 expression in patients with newly-diagnosed primary immune thrombocytopenia (ITP). Twenty-8 ITP patients (18 females and 10 males, age range 18–65 years, median age 38.5 years) enrolled in this study and 26 healthy volunteers (19 women and 7 men, age range 16–66 years, median age 37 years) served as a control group. The patients were treated with HD-DXM (40 mg/day) for 4 consecutive days. CD28 and CTLA-4 expression was assessed by flow cytometry once-monthly for 6 months. Plasma levels of the cytokines IFN-γ and IL-10 were determined by enzyme-linked immunosorbent assay. One month after treatment, a platelet response was observed in 23 (82%) of the patients. The response rates over the next 5 months were 71%, 57%, 53%, 46%, and 39%, chronologically. We observed a significant decrease in CD28 expression after the first month (34.7 ± 4.8% vs. 44.5 ± 4.4% before treatment), after which the CD28 levels gradually increased. In contrast, CTLA-4 expression increased after the first month (3.2 ± 0.5% vs. 0.8 ± 0.4 before treatment), after which the CTLA-4 levels gradually decreased. Similar dynamic changes were seen in the levels of IFN-γ and IL-10. The dynamic changes of CD28 and CTLA-4 were consistent with those of IFN-γ and IL-10 and with the effectiveness of HD-DXM in the treatment of ITP. Our results suggest that a disturbed CD28/CTLA-4 balance may contribute to the immunopathogenesis of ITP.
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Affiliation(s)
- Xinhong Guo
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
| | - Halida Yasen
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
| | - Fang Zhao
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
| | - Lei Wang
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
| | - Mingling Sun
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
| | - Nannan Pang
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
| | - Xiujuan Wang
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
| | - Ying Zhang
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
| | - Jianbing Ding
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China.,b College of Basic Medicine of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
| | - Xiumin Ma
- a State Key Laboratory Incubation Base of Xinjiang Major Diseases Research (2010DS890294); Xinjiang Key Laboratory of Echinococcosis; First Affiliated Hospital of Xinjiang Medical University ; Urumqi, Xinjiang , PR China.,b College of Basic Medicine of Xinjiang Medical University ; Urumqi, Xinjiang , PR China
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20
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Rozanski CH, Utley A, Carlson LM, Farren MR, Murray M, Russell LM, Nair JR, Yang Z, Brady W, Garrett-Sinha LA, Schoenberger SP, Green JM, Boise LH, Lee KP. CD28 Promotes Plasma Cell Survival, Sustained Antibody Responses, and BLIMP-1 Upregulation through Its Distal PYAP Proline Motif. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2015; 194:4717-28. [PMID: 25833397 PMCID: PMC4416738 DOI: 10.4049/jimmunol.1402260] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 03/06/2015] [Indexed: 11/19/2022]
Abstract
In health, long-lived plasma cells (LLPC) are essential for durable protective humoral immunity, and, conversely, in disease are a major source of pathogenic Abs in autoimmunity, graft rejection, and allergy. However, the molecular basis for their longevity is largely unknown. We have recently found that CD28 signaling in plasma cells (PC) is essential for sustaining Ab titers, by supporting the survival of LLPC, but not short-lived PC (SLPC). We now find that, unlike SLPC, CD28 activation in LLPC induces prosurvival downstream Vav signaling. Knockin mice with CD28 cytoplasmic tail mutations that abrogate Vav signaling (CD28-AYAA) had significantly fewer LLPC but unaffected SLPC numbers, whereas mice with mutations that abrogate PI3K signaling (CD28-Y170F) were indistinguishable from wild-type controls. This was consistent with the loss of CD28's prosurvival effect in LLPC from CD28-AYAA, but not CD28-Y170F, mice. Furthermore, the CD28 Vav motif in the B lineage was essential for the long-term maintenance of Ag-specific LLPC populations and Ab titers in vivo. Signaling downstream of the CD28 Vav motif induced previously undescribed transcriptional regulation of B lymphocyte-induced maturation protein-1, a key mediator of PC differentiation and maintenance. These findings suggest CD28 signaling in LLPC modulates the central B lymphocyte-induced maturation protein-1 transcriptional nexus involved in long-term survival and function.
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Affiliation(s)
- Cheryl H Rozanski
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263
| | - Adam Utley
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263
| | - Louise M Carlson
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263
| | - Matthew R Farren
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263
| | - Megan Murray
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263
| | - Lisa M Russell
- Department of Biochemistry, University at Buffalo, Buffalo, NY 14260
| | - Jayakumar R Nair
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263
| | - ZhengYu Yang
- Department of Biostatistics and Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY 14263
| | - William Brady
- Department of Biostatistics and Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY 14263
| | | | - Stephen P Schoenberger
- Laboratory of Cellular Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037
| | - Jonathan M Green
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO 63130
| | - Lawrence H Boise
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA 30322; Department of Cell Biology, Emory University, Atlanta, GA 30322; and
| | - Kelvin P Lee
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263; Department of Medicine, Roswell Park Cancer Institute, Buffalo, NY 14263
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21
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Radosavljevic J, Nordlund E, Mihajlovic L, Krstic M, Bohn T, Buchert J, Velickovic TC, Smit J. Sensitizing potential of enzymatically cross-linked peanut proteins in a mouse model of peanut allergy. Mol Nutr Food Res 2013; 58:635-46. [DOI: 10.1002/mnfr.201300403] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 07/22/2013] [Accepted: 07/30/2013] [Indexed: 01/01/2023]
Affiliation(s)
| | | | - Luka Mihajlovic
- University of Belgrade; Faculty of Chemistry; Belgrade Serbia
| | - Maja Krstic
- University of Belgrade; Faculty of Chemistry; Belgrade Serbia
| | - Torsten Bohn
- Centre de Recherche Public - Gabriel Lippmann; Belvaux Luxembourg
| | | | | | - Joost Smit
- Institute for Risk Assessment Sciences; Utrecht University; Utrecht The Netherlands
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22
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A molecular insight of CTLA-4 in food allergy. Immunol Lett 2013; 149:101-9. [DOI: 10.1016/j.imlet.2012.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2012] [Accepted: 12/06/2012] [Indexed: 12/31/2022]
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23
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Xie J, Lotoski LC, Chooniedass R, Su RC, Simons FER, Liem J, Becker AB, Uzonna J, HayGlass KT. Elevated antigen-driven IL-9 responses are prominent in peanut allergic humans. PLoS One 2012; 7:e45377. [PMID: 23071516 PMCID: PMC3469559 DOI: 10.1371/journal.pone.0045377] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 08/17/2012] [Indexed: 01/14/2023] Open
Abstract
Food allergies, and peanut allergy in particular, are leading causes of anaphylactic fatalities worldwide. The immune mechanisms that underlie food allergy remain ill-defined and controversial, in part because studies in humans typically focus on analysis of a limited number of prototypical Th1/Th2 cytokines. Here we determine the kinetics and prevalence of a broad panel of peanut-driven cytokine and chemokine responses in humans with current peanut allergy vs those with stable, naturally occurring clinical tolerance to peanut. Our primary focus is identification of novel indicators of immune dysregulation. Antigen-specific cytokine mRNA and protein responses were elicited in primary culture via peanut or irrelevant antigen (Leishmania extract, milk antigens) mediated stimulation of fresh peripheral blood cells from 40 individuals. Peanut extract exposure in vitro induced a broad panel of responses associated with Th2/Th9-like, Th1-like and Th17-like immunity. Peanut-dependent Type 2 cytokine responses were frequently found in both peanut allergic individuals and those who exhibit clinical tolerance to peanut ingestion. Among Th2/Th9-associated cytokines, IL-9 responses discriminated between allergic and clinically tolerant populations better than did commonly used IL-4, IL-5 or IL-13 responses. Comparison with responses evoked by unrelated control antigen-mediated stimulation showed that these differences are antigen-dependent and allergen-specific. Conversely, the intensity of IL-12, IL-17, IL-23 and IFN-γ production was indistinguishable in peanut allergic and peanut tolerant populations. In summary, the ability to generate and maintain cytokine responses to peanut is not inherently distinct between allergic and peanut tolerant humans. Quantitative differences in the intensity of cytokine production better reflects clinical phenotype, with optimally useful indicators being IL-9, IL-5, IL-13 and IL-4. Equivalent, and minimal, Ag-dependent pro-inflammatory cytokine levels in both healthy and peanut allergic volunteers argues against a key role for such cytokines in maintenance of clinical tolerance to food antigens in humans.
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Affiliation(s)
- Jungang Xie
- Department of Immunology, University of Manitoba, Winnipeg, Canada
| | | | - Rishma Chooniedass
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Canada
| | - Ruey-Chyi Su
- Department of Immunology, University of Manitoba, Winnipeg, Canada
| | - F. Estelle R. Simons
- Department of Immunology, University of Manitoba, Winnipeg, Canada
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Canada
| | - Joel Liem
- Windsor Allergy Asthma Education Centre, Ontario, Canada
| | - Allan B. Becker
- Department of Immunology, University of Manitoba, Winnipeg, Canada
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Canada
| | - Jude Uzonna
- Department of Immunology, University of Manitoba, Winnipeg, Canada
| | - Kent T. HayGlass
- Department of Immunology, University of Manitoba, Winnipeg, Canada
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Canada
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Pacciani V, Corrente S, Gregori S, Pierantozzi A, Silenzi R, Chianca M, Moschese V, Chini L, Angelini F. Correlation of Der p 2 T-cell responses with clinical characteristics of children allergic to house dust mite. Ann Allergy Asthma Immunol 2012. [PMID: 23176885 DOI: 10.1016/j.anai.2012.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND An understanding of the mechanisms responsible for the development and maintenance of allergic inflammation and their clinical implications is needed to develop specific and successful treatment for allergy. OBJECTIVES To characterize in vitro T-cell responses to Der p 2, one of the major allergens of house dust mite (HDM), and investigate potential correlations between clinical and laboratory parameters. METHODS Forty-two patients monosensitized to HDM and 10 age-matched, healthy children were studied. Dendritic cells pulsed with Der p 2 were used to stimulate autologous CD14(-) cells. Der p 2-specific T-cell activation markers, proliferation, and cytokine production profiles were examined. RESULTS Der p 2-specific T-cell activation markers, proliferation, and T(H)2 cytokine production were significantly higher in HDM patients compared with healthy controls. Moreover, a significant correlation between proliferation and T(H)2 cytokine production was observed. Within the allergic group, skin reaction to HDM was significantly stronger in patients with a Der p 2-specific T-cell response. Levels of HDM-specific IgE directly correlated with interleukin 5 and interleukin 13 levels and with skin prick test results and, ultimately, with the patient's family history of allergy. Furthermore, the presence of atopic march correlated with T-cell proliferation. CONCLUSION We found that, in HDM patients, Der p 2-specific T(H)2 responses, promoted by autologous dendritic cells in vitro, correlate with clinical parameters.
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Affiliation(s)
- Valentina Pacciani
- Department of Pediatrics, University of Rome Tor Vergata, Children's Hospital Bambino Gesù, Rome, Italy
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Ruiter B, Shreffler WG. Innate immunostimulatory properties of allergens and their relevance to food allergy. Semin Immunopathol 2012; 34:617-32. [PMID: 22886110 DOI: 10.1007/s00281-012-0334-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Accepted: 07/10/2012] [Indexed: 12/12/2022]
Abstract
Food allergy is an increasingly prevalent disease of immune dysregulation directed to a small subset of proteins. Shared structural and functional features of allergens, such as glycosylation, lipid-binding and protease activity may provide insight into the mechanisms involved in the induction of primary Th2 immune responses. We review the literature of innate Th2-type immune activation as a context for better understanding the properties of allergens that contribute to the induction of Th2-biased immune responses in at least a subset of individuals. Th2-priming signals have been largely identified in the context of parasite immunity and wound healing. Some of the features of parasite antigens and the innate immune responses to them are now understood to play a role in allergic inflammation as well. These include both exogenous and endogenous activators of innate immunity and subsequent release of key cytokine mediators such as thymic stromal lymphopoietin (TSLP), interleukin (IL)-25 and IL-33. Moreover, numerous innate immune cells including epithelium, dendritic cells, basophils, innate lymphoid cells and others all interact to shape the adaptive Th2 immune response. Progress toward understanding Th2-inducing innate immune signals more completely may lead to novel strategies for primary prevention and therapy of respiratory and food allergies.
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Affiliation(s)
- Bert Ruiter
- Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Charlestown, MA 02129, USA.
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26
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Molecular mechanisms of IgE mediated food allergy. Int Immunopharmacol 2012; 13:432-9. [PMID: 22668720 DOI: 10.1016/j.intimp.2012.05.018] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Revised: 05/10/2012] [Accepted: 05/23/2012] [Indexed: 12/22/2022]
Abstract
The purpose of this review is to collate current knowledge and recent advances in molecular mechanism behind the immediate type hypersensitivity of foods. Food allergy is a growing concern of human health in developed as well as developing countries now days. Food allergic reactions are mostly IgE mediated and also known as immediate type hypersensitivity or type I reaction. This review encompasses a wide range of molecular events during IgE mediated reactions like primary exposure of allergens, processing of allergens by antigen presenting cells, role of transcription factors like GATA-3, STAT-6, NF-AT, c-maf, c-kit and NF-κB, Treg cells, toll like receptors, cytokines and chemokines, class switch to IgE, FcεR1 receptor, priming of IgE on mast cells or basophils, signaling events followed by secondary exposure of allergens, degranulation and release of mediators like leukotrienes, histamines, prostaglandins, β-hexosaminidase and ultimately anaphylaxis. This review may be helpful to beginners as well as experts working in the field of allergy and immunology because of the stepwise explanations of molecular mechanisms involved in IgE mediated reactions.
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Meijerink M, Wells JM, Taverne N, de Zeeuw Brouwer ML, Hilhorst B, Venema K, van Bilsen J. Immunomodulatory effects of potential probiotics in a mouse peanut sensitization model. ACTA ACUST UNITED AC 2012; 65:488-96. [PMID: 22540665 DOI: 10.1111/j.1574-695x.2012.00981.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 04/08/2012] [Accepted: 04/20/2012] [Indexed: 11/30/2022]
Abstract
Peanut allergy accounts for the majority of severe food-related allergic reactions and there is a need for new prevention and treatment strategies. Probiotics may be considered for treatment on the basis of their immunomodulating properties. Cytokine profiles of probiotic strains were determined by in vitro co-culture with human PBMCs. Three strains were selected to investigate their prophylactic potential in a peanut sensitization model by analysing peanut-specific antibodies, mast cell degranulation and ex vivo cytokine production by splenocytes. The probiotic strains induced highly variable cytokine profiles in PBMCs. L. salivarius HMI001, L. casei Shirota (LCS) and L. plantarum WCFS1 were selected for further investigation owing to their distinct cytokine patterns. Prophylactic treatment with both HMI001 and LCS attenuated the Th2 phenotype (reduced mast cell responses and ex vivo IL-4 and/or IL-5 production). In contrast, WCFS1 augmented the Th2 phenotype (increased mast cell and antibody responses and ex vivo IL-4 production). In vitro PBMC screening was useful in selecting strains with anti-inflammatory and Th1 skewing properties. In case of HMI001 (high IL-10/IL-12 ratio) and LCS (high interferon-γ and IL-12), partial protection was seen in a mouse peanut allergy model. Strikingly, certain strains may worsen the allergic reaction as shown in the case of WCFS1.
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Abstract
The gut-associated lymphoid tissue is the largest immune organ in the body and is the primary route by which we are exposed to antigens. Tolerance induction is the default immune pathway in the gut, and the type of tolerance induced relates to the dose of antigen fed: anergy/deletion (high dose) or regulatory T-cell (Treg) induction (low dose). Conditioning of gut dendritic cells (DCs) by gut epithelial cells and the gut flora, which itself has a major influence on gut immunity, induces CD103(+) retinoic acid-dependent DC that induces Tregs. A number of Tregs are induced at mucosal surfaces. Th3 type Tregs are transforming growth factor-β dependent and express latency-associated peptide (LAP) on their surface and were discovered in the context of oral tolerance. Tr1 type Tregs (interleukin-10 dependent) are induced by nasal antigen and forkhead box protein 3(+) iTregs are induced by oral antigen and by oral administration of aryl hydrocarbon receptor ligands. Oral or nasal antigen ameliorates autoimmune and inflammatory diseases in animal models by inducing Tregs. Furthermore, anti-CD3 monoclonal antibody is active at mucosal surfaces and oral or nasal anti-CD3 monoclonal antibody induces LAP(+) Tregs that suppresses animal models (experimental autoimmune encephalitis, type 1 and type 2 diabetes, lupus, arthritis, atherosclerosis) and is being tested in humans. Although there is a large literature on treatment of animal models by mucosal tolerance and some positive results in humans, this approach has yet to be translated to the clinic. The successful translation will require defining responsive patient populations, validating biomarkers to measure immunologic effects, and using combination therapy and immune adjuvants to enhance Treg induction. A major avenue being investigated for the treatment of autoimmunity is the induction of Tregs and mucosal tolerance represents a non-toxic, physiologic approach to reach this goal.
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Affiliation(s)
- Howard L Weiner
- Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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Smit JJ, Bol-Schoenmakers M, Hassing I, Fiechter D, Boon L, Bleumink R, Pieters RHH. The role of intestinal dendritic cells subsets in the establishment of food allergy. Clin Exp Allergy 2011; 41:890-8. [PMID: 21477183 DOI: 10.1111/j.1365-2222.2011.03738.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Food allergy affects approximately 6% of children and is the leading cause of hospitalization for anaphylactic reactions in westernized countries. Crucial in the establishment of allergy is the activation of dendritic cells (DC) leading to T helper 2-mediated responses. OBJECTIVE We, therefore, investigated whether changes in DC subsets precede the establishment of food allergy, and which DC subsets have functional relevance during allergic sensitization in a mouse model. METHODS Changes in DC populations in the intestine were analysed after exposure to cholera toxin alone and in combination with peanut extract (PE) as an allergen. To study the functional role of DC subsets in relation to food allergy, we used expansion of DC in vivo by treatment with Flt3L. RESULTS Sensitization to PE in this mouse model was accompanied by a shift in DC subsets in intestinal tissues towards more CD11b(+) DC and less CD103(+) DC. No significant changes in the plasmacytoid DC (pDC) numbers were observed. Flt3L treatment, resulting in the expansion of all DC subtypes, inhibited allergic manifestations in our model, including Th2 cytokine production, PE-specific IgE and PE-induced mast cell degranulation. pDC depletion reversed Flt3L-induced inhibition of IgE responses and mast cell degranulation. conclusions and clinical relevance: The establishment of food allergy is accompanied by profound changes in DC subsets in the intestine towards more inflammatory CD11b(+) DC. In addition, expansion of DC numbers by Flt3L, in particular pDC, inhibits the establishment of allergic manifestations in the intestine. These findings are of relevance for understanding the role of DC subsets early during the process of allergic sensitization, and may lead to new therapeutic or prophylactic opportunities to prevent food allergy.
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Affiliation(s)
- J J Smit
- Institute for Risk Assessment Sciences, Division of Toxicology, Immunotoxicology group, Utrecht University, Utrecht, The Netherlands.
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30
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Bol-Schoenmakers M, Marcondes Rezende M, Bleumink R, Boon L, Man S, Hassing I, Fiechter D, Pieters RHH, Smit JJ. Regulation by intestinal γδ T cells during establishment of food allergic sensitization in mice. Allergy 2011; 66:331-40. [PMID: 20880210 DOI: 10.1111/j.1398-9995.2010.02479.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Food allergy affects approximately 5% of children and is the leading cause of hospitalization for anaphylactic reactions in westernized countries. The mucosal adjuvant cholera toxin induces allergic sensitization to co-administered proteins in mice, while feeding the protein alone induces oral tolerance. Intestinal γδ T cells could be of importance in the induction of oral tolerance. This study aims to investigate whether γδ T cells have functional relevance in food allergic sensitization. METHODS Changes in γδ T cells on days 1, 2, 3, and 7 after initiation of food allergy were evaluated using flowcytometry. Furthermore, the anti-γδ T-cell receptor (TCR) antibody UC7 was used to block the γδ TCR in mice in vivo, followed by sensitization to peanut. After 4 weeks, peanut-specific antibodies in serum and cytokine production in spleen were measured. RESULTS Induction of food allergy resulted in a profound decrease in the percentage of γδ T cells in intestinal tissues and Peyer's Patches, but not in mesenteric lymph nodes or spleen. This decrease could be detected from days 1 to 2 after the initiation of food allergy and the number of γδ T cells returned to normal on day 7. Blockade of the γδ TCR resulted in elevated food allergic responses upon sensitization with peanut characterized by increased IgE and Th2 cytokine production in splenocytes. CONCLUSION These results demonstrate a unique regulatory role of γδ T cells, suggesting that targeting γδ T cells in the intestine may contribute to strategies to prevent and possibly treat food allergy.
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MESH Headings
- Adjuvants, Immunologic/pharmacology
- Allergens/immunology
- Animals
- Antibodies/pharmacology
- Arachis/immunology
- Cell Count
- Cells, Cultured
- Cholera Toxin/pharmacology
- Female
- Food Hypersensitivity/immunology
- Immunization
- Intestines/cytology
- Intestines/immunology
- Lymph Nodes/cytology
- Mice
- Mice, Inbred C3H
- Mice, Inbred C57BL
- Receptors, Antigen, T-Cell, gamma-delta/antagonists & inhibitors
- Receptors, Antigen, T-Cell, gamma-delta/immunology
- Spleen/cytology
- Spleen/immunology
- T-Lymphocytes/drug effects
- T-Lymphocytes/immunology
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Thangavelu G, Murphy KM, Yagita H, Boon L, Anderson CC. The role of co-inhibitory signals in spontaneous tolerance of weakly mismatched transplants. Immunobiology 2011; 216:918-24. [PMID: 21281982 PMCID: PMC4030676 DOI: 10.1016/j.imbio.2011.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Revised: 01/02/2011] [Accepted: 01/04/2011] [Indexed: 01/22/2023]
Abstract
The immune system of female H-2(b) (C57BL/6) mice is a strong responder against the male minor-H antigen. However rejection or acceptance of such weakly mismatched grafts depends on the type of tissue transplanted. The mechanism responsible for such spontaneous graft acceptance, and its relationship to the natural mechanisms of tolerance of self antigens is unknown. Co-inhibitory molecules negatively regulate immune responses, and are important for self tolerance. We examined whether co-inhibitory molecules play a critical role in "spontaneous" allograft tolerance. Naïve or donor sensitized diabetic female C57BL/6 (B6) wild type (WT), PD-1(-/-), and BTLA(-/-) mice were transplanted with freshly isolated syngeneic male islet grafts. The role of co-inhibitors during priming of anti-donor responses and graft challenge was also assessed using monoclonal antibodies targeting co-inhibitory receptors. Among the co-inhibitor (CTLA-4, PD-1) specific antibodies tested, only anti-PD-1 showed some potential to prevent spontaneous acceptance of male islet grafts. All BTLA(-/-) and almost all PD-1(-/-) recipients maintained the ability to spontaneously accept male islet grafts. While spontaneous graft acceptance in naïve recipients was only weakly PD-1 dependent, tolerance induced by the accepted islets was found to be highly PD-1 dependent. Furthermore, spontaneous graft acceptance in pre-sensitized recipients showed an absolute requirement for recipient PD-1 but not BTLA. Thus, the PD-1 pathway, involved in self tolerance, plays a critical role in spontaneous tolerance induced by weakly mismatched grafts in naïve recipients and spontaneous graft acceptance in pre-sensitized recipients.
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Affiliation(s)
- Govindarajan Thangavelu
- Department of Surgery Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
| | - Kenneth M. Murphy
- Department of Pathology and Centre for Immunology, Howard Hughes Medical Institute, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Hideo Yagita
- Department of Immunology, Juntendo University School of Medicine, Tokyo Japan
| | | | - Colin C. Anderson
- Department of Surgery Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
- Department of Medical Microbiology and Immunology, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
- Address correspondence to: Colin C. Anderson, 5-126A Li Ka Shing Centre, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada T6G 2E1 Tel: 780-492-6036 Fax: 780-492-5348
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Frischmeyer-Guerrerio PA, Guerrerio AL, Chichester KL, Bieneman AP, Hamilton RA, Wood RA, Schroeder JT. Dendritic cell and T cell responses in children with food allergy. Clin Exp Allergy 2010; 41:61-71. [PMID: 20825428 DOI: 10.1111/j.1365-2222.2010.03606.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Food allergy (FA) and eosinophilic oesophagitis (EE) are increasingly common clinical problems. Dendritic cells (DCs) are key regulators of the sensitization and effector phases of allergic immune responses, but their role in these diseases is largely unknown. OBJECTIVE To evaluate for alterations in the phenotype and function of DCs in children with IgE-mediated milk allergy or EE compared with their non-affected siblings. METHODS Plasmacytoid DCs (pDCs) and myeloid DCs (mDCs) were prepared from peripheral blood of children with milk allergy (FA), EE, and non-affected siblings (CON). Purified pDCs and mDCs were cultured alone or with autologous CD4(+) lymphocytes. Cytokine levels in plasma, or culture supernatants following stimulation, were measured using multiplex array immunoassay. Cell-surface molecule expression was determined by flow cytometry. RESULTS DCs from FA subjects produced greater levels of pro-inflammatory cytokines (IL-6, TNF-α), granulocyte macrophage-colony forming factor, and mDC-derived IL-10 compared with controls following allergen exposure. T(H) 2 but not T(H) 1 cytokines were spontaneously produced in DC-CD4(+) T cell co-cultures from children with FA and were not significantly increased after stimulation with milk extract, suggesting an ongoing activation in vivo. This hypothesis was further supported by evidence for elevated IL-5 and IL-13 protein in the plasma of children with both FA and EE. The only significant DC phenotypic differences were: (1) reduced levels of CD80 in EE subjects and (2) FcɛRI expression that correlated with serum IgE levels in both groups of subjects. CONCLUSION This study suggests that DCs from children with FA and EE produce more pro-inflammatory cytokines, and that their CD4(+) T cells are spontaneously activated to produce T(H) 2 cytokines in the presence of FcɛRI-bearing DCs.
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Affiliation(s)
- P A Frischmeyer-Guerrerio
- Department of Pediatrics, Division of Pediatric Allergy and Immunology, Johns Hopkins Children's Center, Baltimore, MD, USA.
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CTLA4 and CD86 gene polymorphisms and susceptibility to chronic obstructive pulmonary disease. Hum Immunol 2010; 71:1141-6. [PMID: 20732370 DOI: 10.1016/j.humimm.2010.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2010] [Revised: 07/19/2010] [Accepted: 08/16/2010] [Indexed: 12/14/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) may be related to chronic inflammation and immune-mediated conditions, and its pathogenesis involves T-cell activation and proliferation. Cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) and costimulatory molecules (CD80/CD86) genes are important mediators of T-cell activation in the immune response. The aim of this study was to investigate whether +2379G/C (rs17281995) and +1057G/A (rs1129055) in CD86 and -318C/T (rs5742909) and +49A/G (rs231775) in CTLA-4 genes single nucleotide polymorphisms (SNPs) are associated with COPD in a Chinese population. The four polymorphisms were identified in 396 COPD patients and 400 controls using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The frequency of the T allele of the -318C/T in CTLA-4 and the A allele of the +1057G/A in CD86 polymorphisms showed significant association with COPD when compared with controls (T allele: p < 0.0001; A allele: p = 0.009). Comparison of genotype frequencies showed that -318CT, +1057GA, and +1057AA genotype was overrepresented in the COPD group, respectively (-318CT: 50.8% vs 28.5%, p < 0.0001; +1057GA: 58.6% vs 54.2%, p = 0.002; +1057AA: 30.1% vs 25.8%, p = 0.002). However, we failed to find any association between the four SNPs and COPD when cases were classified by smoking status or clinical stages (p > 0.05). The results indicate that the polymorphisms of CTLA-4 (-318C/T) and CD86 (+1057G/A) may be important genetic factor associated with risk or protection for COPD in Chinese population.
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Regulatory T-cells have a prominent role in the immune modulated vaccine response by specific oligosaccharides. Vaccine 2010; 28:5711-7. [DOI: 10.1016/j.vaccine.2010.06.046] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Revised: 05/31/2010] [Accepted: 06/11/2010] [Indexed: 11/22/2022]
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Berce V, Potocnik U. Functional polymorphism in CTLA4 gene influences the response to therapy with inhaled corticosteroids in Slovenian children with atopic asthma. Biomarkers 2010; 15:158-66. [PMID: 19895365 DOI: 10.3109/13547500903384318] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We genotyped CTLA4 CT60 (rs3087243) functional single nucleotide polymorphism (SNP) in children with asthma and in healthy controls and correlated the genotype data with asthma clinical data, including treatment response with inhaled corticosteroids measured by forced expiratory volume in the first second (FEV(1)). FEV(1) increased by 21.7% after 4 weeks of therapy in atopic asthmatics with the A/A genotype compared with an 8.6% increase in heterozygotes and a 5.8% increase in G/G homozygotes (p <0.01). Genotype and allele frequencies in asthmatics did not differ significantly from those in the control group. SNP CT60 in the CTLA4 gene is significantly associated with the response to treatment with inhaled corticosteroids in children with atopic asthma and could be a useful biomarker for personalized therapy in asthmatic children. SNP CT60 in the CTLA4 gene plays only a minor role in genetic susceptibility to childhood asthma in the Caucasian population.
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Affiliation(s)
- Vojko Berce
- Department of Pediatrics, General Hospital Murska Sobota, Rakican, Murska Sobota, Slovenia
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Fecek RJ, Marcondes Rezende M, Busch R, Hassing I, Pieters R, Cuff CF. Enteric reovirus infection stimulates peanut-specific IgG2a responses in a mouse food allergy model. Immunobiology 2010; 215:941-8. [PMID: 20356650 DOI: 10.1016/j.imbio.2010.02.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Revised: 02/18/2010] [Accepted: 02/18/2010] [Indexed: 11/29/2022]
Abstract
IgE-mediated food allergies are an important cause of life-threatening hypersensitivity reactions. Orally administered peanut antigens mixed with the mucosal adjuvant cholera toxin (CT) induce a strong peanut extract (PE)-specific serum IgE response that is correlated with T-helper type 1 (Th1) and type 2 (Th2)-like T-cell responses. This study was conducted to determine if respiratory enteric orphan virus (reovirus), a non-pathogenic virus that induces robust Th1-mediated mucosal and systemic responses could modulate induction of PE-specific allergic responses when co-administered with PE. Young mice were orally exposed to PE mixed with CT, reovirus, or both CT and reovirus. As expected, CT promoted PE-specific serum IgE, IgG1, and IgG2a and intestinal IgA production as well as splenic Th1- and Th2-associated cytokine recall responses. Reovirus did not alter PE-specific serum IgE and IgG1 levels, but substantially increased the PE-specific IgG2a response when co-administered with PE with or without CT. Additionally, reovirus significantly decreased the percentage of the Peyer's patch CD8+ T-cells and Foxp3+CD4+ T-regulatory cells when co-administered with PE. These results demonstrate that an acute mucosal reovirus infection and subsequent Th1 immune response is capable of modulating the Th1/Th2 controlled humoral response to PE. The reovirus-mediated increase in the PE-specific IgG2a antibody response may have therapeutic implications as increased levels of non-allergenic PE-specific IgG2a could block PE antigens from binding to IgE-sensitized mast cells.
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Affiliation(s)
- Ronald J Fecek
- Department of Microbiology, Immunology, and Cell Biology, Robert C. Byrd Health Sciences Center of West Virginia University, Morgantown, P.O. Box 9177, WV 26506, USA
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López-Expósito I, Song Y, Järvinen KM, Srivastava K, Li XM. Maternal peanut exposure during pregnancy and lactation reduces peanut allergy risk in offspring. J Allergy Clin Immunol 2009; 124:1039-46. [PMID: 19895992 DOI: 10.1016/j.jaci.2009.08.024] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Revised: 08/17/2009] [Accepted: 08/20/2009] [Indexed: 01/10/2023]
Abstract
BACKGROUND Maternal allergy is believed to be a risk factor for peanut allergy (PNA) in children. However, there is no direct evidence of maternal transmission of PNA susceptibility, and it is unknown whether maternal peanut exposure affects the development of PNA in offspring. OBJECTIVE To investigate the influence of maternal PNA on offspring reactions to the first peanut exposure, and whether maternal low-dose peanut exposure during pregnancy and lactation influences these reactions and peanut sensitization in a murine model. METHODS Five-week-old offspring of PNA C3H/HeJ mothers (PNA-Ms) were challenged intragastrically with peanut (first exposure), and reactions were determined. In a subset of the experiment, PNA-Ms were fed a low dose of peanut (PNA-M/PN) or not fed peanut (PNA-M/none) during pregnancy and lactation. Their 5-week-old offspring were challenged intragastrically with peanut, and reactions were determined. In another subset of the experiment, offspring of PNA-M/PN or PNA-M/none were sensitized with peanut intragastrically for 6 weeks, and serum peanut-specific antibodies were determined. RESULTS PNA-M offspring exhibited anaphylactic reactions at first exposure to peanut that were associated with peanut-specific IgG(1) levels and prevented by a platelet activation factor antagonist. In a subset experiment, PNA-M/PN offspring showed significantly reduced first-exposure peanut reactions, increased IgG(2a), and reduced mitogen-stimulated splenocyte cytokine production compared with PNA-M/none offspring. In an additional experiment, PNA-M/PN offspring showed reduction of peanut-specific IgE to active peanut sensitization. CONCLUSION We show for the first time maternal transmission of susceptibility to first-exposure peanut reactions and active peanut sensitization. Low-dose peanut exposure during pregnancy and lactation reduced this risk.
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Affiliation(s)
- Iván López-Expósito
- Department of Pediatrics, Mount Sinai School of Medicine, New York, NY 10029-6574, USA
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Aldemir H, Bars R, Herouet-Guicheney C. Murine models for evaluating the allergenicity of novel proteins and foods. Regul Toxicol Pharmacol 2009; 54:S52-7. [DOI: 10.1016/j.yrtph.2008.11.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2008] [Revised: 11/14/2008] [Accepted: 11/18/2008] [Indexed: 01/15/2023]
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Wennergren G. What if it is the other way around? Early introduction of peanut and fish seems to be better than avoidance. Acta Paediatr 2009; 98:1085-7. [PMID: 19432829 DOI: 10.1111/j.1651-2227.2009.01342.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
UNLABELLED For many years, the advice to prevent food allergy was to postpone the introduction of allergens like egg, fish and peanut. However, elimination of food allergens during pregnancy and infancy failed to prevent food allergy. Instead, several studies indicate that early introduction of food like fish and peanuts may be beneficial. The most compelling illustration of this has been presented for peanuts. The prevalence of peanut allergy is lower in children in Israel than in the UK, despite introduction of peanut during infancy in Israel. Other studies have reported that early introduction of fish reduced the risk of allergic sensitization and allergic diseases like eczema. CONCLUSION Early introduction rather than avoidance may be a better strategy for the prevention of food allergy. The mechanism may be that early introduction of food allergens during infancy might induce tolerance, thereby preventing the development of allergy.
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Affiliation(s)
- Göran Wennergren
- Department of Paediatrics, University of Gothenburg, Queen Silvia Children's Hospital, Gothenburg, Sweden.
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McFadden JP, White JML, Basketter DA, Kimber I. Does hapten exposure predispose to atopic disease? The hapten-atopy hypothesis. Trends Immunol 2009; 30:67-74. [PMID: 19138566 DOI: 10.1016/j.it.2008.11.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2008] [Revised: 11/16/2008] [Accepted: 11/21/2008] [Indexed: 12/15/2022]
Abstract
Contact allergy data indicates that atopics have heightened oral tolerance to haptens (chemical allergens). We speculate here, that artificially increased oral exposure to chemicals compete with dietary proteins for the development of oral tolerance, predisposing to the acquisition of food protein allergy and representing one driver for the increasing prevalence of protein allergy and/or atopy. Hapten exposure via other surfaces such as the skin and airways might also be important in promoting atopic disease. Consistent with this hypothesis it is notable that over 40 years, with the huge increase in atopic disease, there has also been an increase in dietary hapten exposure through processed food, formula milk and oral antibiotic and drug use.
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Affiliation(s)
- J P McFadden
- Department of Cutaneous Allergy, St John's Institute of Dermatology, St. Thomas' Hospital, London SE1 7EH, UK.
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41
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Abstract
Multiple mechanisms of tolerance are induced by oral antigen. Low doses favor active suppression, whereas higher doses favor clonal anergy/deletion. Oral antigen induces T-helper 2 [interleukin (IL)-4/IL-10] and Th3 [transforming growth factor (TGF)-beta] T cells plus CD4+CD25+ regulatory cells and latency-associated peptide+ T cells. Induction of oral tolerance is enhanced by IL-4, IL-10, anti-IL-12, TGF-beta, cholera toxin B subunit, Flt-3 ligand, and anti-CD40 ligand. Oral (and nasal) antigen administration suppresses animal models of autoimmune diseases including experimental autoimmune encephalitis, uveitis, thyroiditis, myasthenia, arthritis, and diabetes in the non-obese diabetic (NOD) mouse, plus non-autoimmune diseases such as asthma, atherosclerosis, graft rejection, allergy, colitis, stroke, and models of Alzheimer's disease. Oral tolerance has been tested in human autoimmune diseases including multiple sclerosis (MS), arthritis, uveitis, and diabetes and in allergy, contact sensitivity to dinitrochlorobenzene (DNCB), and nickel allergy. Although positive results have been observed in phase II trials, no effect was observed in phase III trials of CII in rheumatoid arthritis or oral myelin and glatiramer acetate (GA) in MS. Large placebo effects were observed, and new trials of oral GA are underway. Oral insulin has recently been shown to delay onset of diabetes in at-risk populations, and confirmatory trials of oral insulin are being planned. Mucosal tolerance is an attractive approach for treatment of autoimmune and inflammatory diseases because of lack of toxicity, ease of administration over time, and antigen-specific mechanisms of action. The successful application of oral tolerance for the treatment of human diseases will depend on dose, developing immune markers to assess immunologic effects, route (nasal versus oral), formulation, mucosal adjuvants, combination therapy, and early therapy.
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Affiliation(s)
- Howard L. Weiner
- Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Andre Pires da Cunha
- Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Francisco Quintana
- Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Henry Wu
- Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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