Clinical and Immunological Outcomes after Randomized Trial of Baked Milk Oral Immunotherapy for Milk Allergy
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PROVIDER: PRJNA1176124 | ENA |
REPOSITORIES: ENA
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Project description:BACKGROUND. Cow’s milk allergy (CMA) is the most common food allergy in young children. Treatment with oral immunotherapy (OIT) has shown efficacy but also high rates of adverse reactions. We sought to determine if baked milk (BM) OIT could reduce adverse reactions while still inducing desensitization, and to identify immunological correlates of successful BMOIT. METHODS. This phase II, randomized trial evaluated the safety and efficacy of BMOIT in children age 3-18 years. After the initial placebo-controlled first year of treatment, placebo-treated participants crossed over to active BMOIT for year two. Double-blind, placebo-controlled food challenges (DBPCFC) were conducted to BM after year one and to both BM and unheated milk (UM) after year two. IgG/IgE antibodies were measured along with cow’s milk (CM)-specific CD4 memory T cell populations, profiled using flow cytometry and scRNA-Seq. RESULTS. Twenty-one of 30 (70%) reached the primary endpoint of tolerating 4044mg of BM protein at month-24, and 11/30 tolerated ≥2000mg of UM. Dosing symptoms were common, but >98% were mild with no severe reactions. Immunological changes associated with desensitization included increased CM IgG4, CM+ FOXP3+ cells, and Tregs and corresponding decreases in CM IgE, CM+ Th2A cells, and CD154+ cells. T cell and antibody measurements were combined to build a model that predicted UM oral food challenge (OFC) outcomes. CONCLUSION. BMOIT was well tolerated and induced a substantial level of desensitization to baked and unheated milk. This desensitization corresponded to significant redistribution within antigen specific antibody and T cell compartments that provide novel insight into the mechanistic changes that occur with OIT treatment.
2025-01-13 | GSE280063 | GEO
Project description:BACKGROUNDCow's milk (CM) allergy is the most common food allergy in young children. Treatment with oral immunotherapy (OIT) has shown efficacy, but high rates of adverse reactions. The aim of this study was to determine whether baked milk OIT (BMOIT) could reduce adverse reactions while still inducing desensitization, and to identify immunological correlates of successful BMOIT.METHODSThis phase II, randomized trial evaluated the safety and efficacy of BMOIT in milk-allergic children 3-18 years old. After the initial placebo-controlled first year of treatment, placebo-treated participants crossed over to active BMOIT. Double-blind, placebo-controlled oral food challenges (OFCs) were conducted with BM after year 1 and to both BM and unheated milk (UM) after year 2. IgG and IgE antibodies were measured along with CM-specific (CM+) CD4+ memory T cell populations, profiled using flow cytometry and scRNA-Seq.RESULTSTwenty-one of 30 (70%) reached the primary endpoint of tolerating 4044 mg of BM protein at month 24, and 11 of 30 tolerated 2000 mg or more of UM protein. Dosing symptoms were common, but more than 98% were mild, with no severe reactions. Immunological changes associated with desensitization included increased CM IgG4, CM+ FOXP3+ cells, and Tregs and corresponding decreases in CM IgE, CM+ Th2A cells, and CD154+ cells. T cell and antibody measurements were combined to build a model that predicted UM OFC outcomes.CONCLUSIONBMOIT was well tolerated and induced desensitization to BM and UM. This desensitization corresponded to redistribution within antigen-specific antibody and T cell compartments that provided insight into the mechanistic changes that occur with OIT treatment.TRIAL REGISTRATIONClinicalTrials.gov NCT03462030.FUNDING: Myra Reinhardt Family Foundation (grant number 128388), NIH/NIAID (U19AI135731, T32AI125179, S10OD025052).
| S-EPMC11721308 | biostudies-literature
Project description:The aim of this study was to investigate how the human milk proteome relates to allergy of the mother and allergy development in the infant.
2022-10-31 | PXD034806 | Pride
Project description:This study was conducted in order to gain insight into microbial and functional differences related to outgrowth of cow’s milk allergy (CMA) and a nutritional intervention with synbiotics.
2023-07-19 | PXD037190 | Pride
Project description:Transcriptomic signatures were identified in human peripheral blood mononuclear cells (PBMCs) and breast milk lymphocyte (BML) cells induced by trivalent inactivated influenza vaccine (TIV) or live attenuated influenza vaccine (LAIV) administered after delivery. We performed an RNA-Seq analysis on blood and breast milk samples from a subset of subjects enrolled in a randomized, double-blind controlled study in breastfeeding women who received either intranasal LAIV and intramuscular placebo, or intramuscular TIV and intranasal placebo (LAIV, n=10 and TIV, n=6). Differentially expressed genes, gene clusters, and enriched pathways were identified. We observed increased innate immune signaling responses in BML but not in PBMC at Day 28 for the LAIV group. We hypothesize that breastfeeding extended the innate response to LAIV via mucosal immunity. An association between an increased IgG antibody response in TIV vs. LAIV identified in the parent study using ELISA corresponded to IGHG1 immunoglobulin gene expression in Day 28 PBMCs.
2025-05-13 | GSE281592 | GEO
Project description:Neonates Cow's milk protein allergy (CMPA) feces Raw sequence reads
| PRJNA1131917 | ENA
Project description:Study of children with Cow's Milk Allergy
| PRJEB78556 | ENA
Project description:Objective: The study aimed to characterize circulating immune cell subpopulation gene expression in human milk-fed (HMF) compared to cow's milk formula-fed (FF) infants using single-cell transcriptomics. Methods: Peripheral blood mononuclear cells (PBMCs) were isolated from healthy HMF (n=6), and FF (n=3) infants who were 3 to 3.5 months old and enrolled in a non-randomized clinical trial. Single-cell RNA sequencing (scRNA-seq) was used to generate a PBMC atlas and evaluate gene expression in immune cell subsets. Differential expression analysis was performed on each cell type independently after clustering the cells by similar marker gene expression using the scGEAToolbox. Differentially expressed genes (DEGs) were subjected to pathway analyses using an online functional enrichment analysis program. Results: The relative abundance (%) of T and B lymphocytes, natural killer (NK) cells, and plasmacytoid dendritic cells were similar, while monocytes were higher in FF infants than in HMF infants (22.6 ± 10.7 vs 8.3 ± 5.6; P = 0.0314). In addition, innate and adaptive immune cells from FF infants exhibited a higher activation state compared to HMF infants. We identified 16 distinct cell subsets from the major immune cell types: three monocyte subsets, four NK subsets, two B cell subsets, and seven T cell subsets. Transcriptional profiles of each peripheral innate and adaptive immune cell subtype varied between HMF and FF infants. Pathway enrichment analysis of cell-specific transcriptional changes within subsets of major cell types revealed that the interleukin (IL)-4/IL-13 signaling pathways were upregulated in FF infants relative to HMF infants. Conclusion: These findings suggest that human milk downregulates peripheral immune cell cytokine transcriptional signatures linked to allergic inflammation and infection relative to formula feeding.
2025-05-08 | GSE296678 | GEO
Project description:Breast milk is a complex liquid that enriched in immunological components and affect the development of the infant immune system. Exosomes, the membranous vesicles of endocytic origin, are ubiquitously in various body fluids which can mediate intercellular communication. MicroRNAs (miRNAs), a well-defined group of non-coding small RNAs, in human breast milk are packaged inside exosomes. Here, we present the identification of miRNAs in human breast milk exosomes using deep sequencing technology. We found that the immune-related miRNAs are enriched in breast milk exosomes, and are resistant to the general harsh conditions. Four small RNA libraries in human breast milk exosomes from four healthy women (30 +/- 0.9 years old, primiparity) when the infant were aged at 60 days were sequenced.
2011-12-21 | E-GEOD-32253 | biostudies-arrayexpress
Project description:Breast milk is a complex liquid that enriched in immunological components and affect the development of the infant immune system. Exosomes, the membranous vesicles of endocytic origin, are ubiquitously in various body fluids which can mediate intercellular communication. MicroRNAs (miRNAs), a well-defined group of non-coding small RNAs, in human breast milk are packaged inside exosomes. Here, we present the identification of miRNAs in human breast milk exosomes using deep sequencing technology. We found that the immune-related miRNAs are enriched in breast milk exosomes, and are resistant to the general harsh conditions.
2011-12-21 | GSE32253 | GEO