A novel whole blood gene expression signature for asthma, dermatitis and rhinitis multimorbidity in BAMSE cohort
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE141623 | GEO | 2021/12/03
REPOSITORIES: GEO
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Project description:Allergic diseases correspond to a broad range of hypersensitivity reactions, often occurring as co-morbidities. Investigation of the molecular basis of allergy is a challenge because of its highly heterogeneous nature. We combined large-scale and high-throughput gene expression technology and systems biology approaches to retrieve relevant biomarkers and signalling pathways.
2021-12-03 | GSE141631 | GEO
Project description:Background: The prevalence of individuals allergic to latex, exhibiting cross-hypersensitivity with plant-derived food has been frequently reported as the so-called latex-fruit syndrome. Nonetheless, molecular mechanisms underlying allergy to latex and/or fruit are poorly understood. Objective: The aims of this study were to identify candidate genes that may be associated with the pathogenesis of allergy to latex and /or vegetable food, and to assess if similar molecular pathways are involved in both types of hypersensitivity. Methods: DNA microarray analysis was performed to screen the molecular profiles of peripheral blood mononuclear cells isolated from patients with allergy to latex, to fruit, or with latex-fruit syndrome, and from control healthy subjects. Results: Gene expression profiling identified an overlapping dataset of genes commonly regulated in all the atopic patients enrolled in this study, suggesting that similar molecular mechanisms are involved in the pathogenesis of allergy to the fruit and /or latex. Several regulators of the innate and acquired immunity reported to polarize the immunological response towards a Th2-mediated immune response were overexpressed in patients. Furthermore, evidences suggested that T regulatory cell expression might be defective in allergic patients, as a consequence of a dysregulation of some inflammatory cytokines. Finally, several transcription factors that may be responsible for the Th1/Th2 imbalance were modulated in allergic patients. Conclusion and clinical implications: This study identified relevant genes that may help to elucidate the molecular mechanisms underlying allergic disease. Knowledges of critical targets, along with transcription factors regulating gene activity may facilitate the development of new therapies. Experiment Overall Design: This study aimed at the understanding of the molecular pathways involved in allergy to latex and fruit. As latex and vegetable food allergens cross-react, it could be hypothesized that similar pathways are involved in both types of hypersensitivity. Experiment Overall Design: For this purpose, patients allergic to latex (n=6), allergic to vegetable food (n=5), or suffering from latex-fruit syndrome (n=6) were enrolled from the Unit of Allergy of the Gemelli Hospital of Rome. Moreover, 4 healthy volunteers were added to this study. Five ml of blood were harvested from each individual, and PBMCs were isolated on ficoll gradient. Following sample preparation (as recommended by the manufacturer), each sample was hybridized on Affymetrix human focus array. Data were processed with Affymetrix MAS 5.0 software and averaged intensity of signals from biological replicates were calculated for further analysis. Experiment Overall Design: The CEL files for this study were lost in a computer crash.
2009-08-09 | E-GEOD-13619 | biostudies-arrayexpress
Project description:In this study we present the first genome-wide expression profiling of peripheral B cells by massive parallel RNA sequencing in patients with allergic asthma validating the discovery potential of this approach in allergy. RNA-seq was used to asses expression differences in B CD19 Lymphocytes from house dust mite allergic patients and healthy controls.
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Project description:This research study will examine how often hypersensitivity, or allergic reactions, occur in patients receiving the chemotherapy medication oxaliplatin. Hypersensitivity reactions can vary from a transient skin rash and fever to more severe symptoms such as shortness of breath, chest tightness, and a more severe allergic reaction that can affect blood pressure called anaphylaxis. We will be examining how often hypersensitivity reactions occur and how severe the reactions are when they occur. We will also examine whether there are factors that place people at risk for developing hypersensitivity reactions to oxaliplatin. In an optional portion to this study, we will examine whether allergy skin testing can predict whether someone will develop a hypersensitivity reaction.
Participants who develop a moderate to severe allergic reaction to oxaliplatin will be invited to participate in an additional portion of the study examining a desensitization process. This part of the study will examine whether a desensitization process can prevent future hypersensitivity reactions to oxaliplatin in patients who previously developed moderate to severe hypersensitivity reactions and allow therapy with oxaliplatin to continue.
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Project description:The link between upper and lower airways in patients with both asthma and allergic rhinitis is still poorly understood. As the biological complexity of these disorders can be captured by gene expression profiling we hypothesized that the clinical expression of rhinitis and/or asthma is related to differential gene expression between upper and lower airways epithelium. We used micro array to profile gene expression of primary nasal and bronchial epithelial cells from the same individuals and examining the impact of allergic rhinitis with and without concomitant allergic asthma on expression profiles. 17 subjects were included in a cross-sectional study (6 allergic asthma and allergic rhinitis; 5 allergic rhinitis; 6 healthy controls). RNA was extracted from isolated and cultured epithelial cells from bronchial brushes and nasal biopsies, and analyzed by microarray (Affymetrix U133+ PM Genechip Array).
2013-02-05 | E-GEOD-44037 | biostudies-arrayexpress
Project description:We evaluated cutaneous contact hypersensitivity (CHS) in Cnr1-/-/Cnr2-/- animals using the obligate contact allergen 2,4-dinitrofluorobenzene (DNFB), which generates a specific cutaneous T-cell mediated allergic response upon repeated allergen contact. Allergic contact dermatitis affects about 5% of men and 11% of women in industrialized countries and is one of the leading causes for occupational diseases. In an animal model for cutaneous contact hypersensitivity we show that mice lacking both known cannabinoid receptors display exacerbated allergic inflammation. In contrast, fatty acid amide hydrolase deficient mice, which have increased levels of the endocannabinoid anandamide, displayed reduced allergic responses in the skin. Cannabinoid receptor antagonists exacerbated whereas receptor agonists attenuated allergic inflammation. These results demonstrate a protective role of the endocannabinoid system in contact allergy in the skin, and suggest a novel target for therapeutic intervention. Experiment Overall Design: Three wildtype mice (Wt) and three Cnr1-/-/Cnr2-/- (Ko) mice were used. Contact hypersensitivity was determined always at the right ears, which therefore were treated with DNFB (Tr). Left ears of mice were kept untreated and served as control ears (C). A total of 12 hybridizations were performed (2 strains x 2 treatments X 3 biological replicates) in this experiment.
2009-04-23 | E-GEOD-7694 | biostudies-arrayexpress
Project description:This SuperSeries is composed of the SubSeries listed below.
2021-12-03 | GSE141661 | GEO
Project description:Background: The prevalence of individuals allergic to latex, exhibiting cross-hypersensitivity with plant-derived food has been frequently reported as the so-called latex-fruit syndrome. Nonetheless, molecular mechanisms underlying allergy to latex and/or fruit are poorly understood. Objective: The aims of this study were to identify candidate genes that may be associated with the pathogenesis of allergy to latex and /or vegetable food, and to assess if similar molecular pathways are involved in both types of hypersensitivity. Methods: DNA microarray analysis was performed to screen the molecular profiles of peripheral blood mononuclear cells isolated from patients with allergy to latex, to fruit, or with latex-fruit syndrome, and from control healthy subjects. Results: Gene expression profiling identified an overlapping dataset of genes commonly regulated in all the atopic patients enrolled in this study, suggesting that similar molecular mechanisms are involved in the pathogenesis of allergy to the fruit and /or latex. Several regulators of the innate and acquired immunity reported to polarize the immunological response towards a Th2-mediated immune response were overexpressed in patients. Furthermore, evidences suggested that T regulatory cell expression might be defective in allergic patients, as a consequence of a dysregulation of some inflammatory cytokines. Finally, several transcription factors that may be responsible for the Th1/Th2 imbalance were modulated in allergic patients. Conclusion and clinical implications: This study identified relevant genes that may help to elucidate the molecular mechanisms underlying allergic disease. Knowledges of critical targets, along with transcription factors regulating gene activity may facilitate the development of new therapies.
2009-07-30 | GSE13619 | GEO
Project description:In this study we present the first genome-wide expression profiling of peripheral B cells by massive parallel RNA sequencing in patients with allergic asthma validating the discovery potential of this approach in allergy.
2014-08-28 | GSE52742 | GEO
Project description:The link between upper and lower airways in patients with both asthma and allergic rhinitis is still poorly understood. As the biological complexity of these disorders can be captured by gene expression profiling we hypothesized that the clinical expression of rhinitis and/or asthma is related to differential gene expression between upper and lower airways epithelium. We used micro array to profile gene expression of primary nasal and bronchial epithelial cells from the same individuals and examining the impact of allergic rhinitis with and without concomitant allergic asthma on expression profiles.
2013-02-05 | GSE44037 | GEO