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Allergen - Crossref

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Last Updated: 28 September 2022

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Immuno-informatic Prediction of B and T cell Epitopes of Cysteine Protease Allergen from Phaseolus vulgaris with Cross-reactive Potential and Population Coverage

Using the IEDB epitope database, a MSA based positional conservancy was also established between HDM allergen epitopes and predicted peptides. The IEDB's population coverage of each promiscuous T cell epitope was estimated using an IEDB population coverage tool, which was finally confirmed. ELISA with kidney bean sensitive patientu2019s sera demonstrated increased IgE binding of B-cell peptides in comparison to T-cell or control peptides. Epitope conservancy showed that B-cell epitopes were up to 95% saved in comparison to different T-cell epitopes. Structural analysis of cysteine protease with Der p 1 and Der f 1 revealed similar epitopic regions, providing further evidence for epitope estimation. Promiscuous T-cell epitopes bound to broad-spectrum class-II MHC alleles have demonstrated the dissemination of T-cell peptides throughout the world and in Asian populations. Understanding of food allergy and related immune responses will be enhanced by the analysis of cross-reactive and widely distributed epitopes of allergen and knowledge of their interactive surfaces.

Source link: https://doi.org/10.2174/1389203723666220804124927


Domain Adaptation for In-Line Allergen Classification of Agri-Food Powders Using Near-Infrared Spectroscopy

Due to the incorporation of allergens in the final product, the introduction of incorrect agri-food powders to a production line due to human error is a significant safety issue in food and drink manufacturing. Two deep-learning domain adaptation techniques are used: domain-adversarial neural networks and semisupervised generative adversarial neural networks. Overall, accuracy of up to 96 percent was achieved with no branded data from the target domain moving spectra, and up to 99. 6 percent was achieved when incorporating a single branded data instance for each product into model development.

Source link: https://doi.org/10.3390/s22197239


Molecular allergology place in allergen-specific immunotherapy

Laboratory methods of allergy diagnosis are an important component of allergist daily life. Molecular allergodiagnostics is a new examination technique that aids in the detection of patient specific allergocomponent sensitization. The risk prediction of the severe allergic reactions is the primary focus of the drug's application, as well as the development of food allergy-friendly diet plans. The results of traditional allergy testing methods are important in determining the appointment of allergen immunotherapy indications clinical and anamnesis data, which are supplemented by the results of traditional allergy examination methods. At the same time, its use as a third-line diagnostic tool can aid in solving difficult clinical tasks relating to the finding of a causally important allergen in patients with respiratory allergy symptoms during multiple seasons of simultaneous dusting in many plants' seasons, as well as distinguishing the true from polysensitized patients.

Source link: https://doi.org/10.36691/rja1572


Ascorbylation of a Reactive Cysteine in the Major Apple Allergen Mal d 1

Apple allergy reactions in the northern hemisphere are attributed to the protein Mal d 1 in the northern hemisphere. The S-ascorbylated cysteine partially masks a large IgE antibody binding site on the surface of Mal d 1, which reduces IgE binding in apple-allergic patients's serum. Our findings reveal, from a structural standpoint, how chemical modifications of allergens with elements of the natural food matrix could play a key role.

Source link: https://doi.org/10.3390/foods11192953


Proline metabolism reprogramming of trained macrophages induced by early respiratory infection combined with allergen sensitization contributes to development of allergic asthma in childhood of mice

Background Infants with respiratory syncytial virus -associated bronchiolitis are at a higher risk of childhood asthma. Metabolic reprogramming enhances the ability of the innate immune cells to respond to a secondary stimulus, which is a significant step toward the induction of trained immunity. We suspect that specific metabolic reprogramming of lung trained macrophages induced by neonatal respiratory infection is crucial in childhood allergic asthma. PVM infection in neonatal mice and OVA sensitization in neonatal mice resulted in non-Th2 type allergic asthma in children of mice after a OVA challenge. Following re-stimulation, Lung CD11b + macrophages in the memory phage grew, and inflammatory responses accelerated, suggesting trained macrophages. Proline biosynthesis restriction, as well as the Th1/Th17 type allergic asthma, hindered the growth of the trained macrophages and the Th1/Th17 type allergic asthma, as well as the Th1/Th17 type allergic asthma, while the allergic asthma was alleviated by proline.

Source link: https://doi.org/10.3389/fimmu.2022.977235


Allergen bronchoprovocation: Correlation between FEV1 maximal percent fall and area under the FEV1 curve and impact of allergen on recovery.

During allergen bronchoprovocation testing, house dust mite triggers greater responses than other allergens. Aims Our first aim was to investigate the correlation between FEV 1, max and AUC during the early asthmatic response and the late asthmatic response. In the second, we investigated whether HDM's EAR recovery period would be longer than other allergens compared to other allergens. Methods We retrospectively estimated EAR and LAR AUC for each listed allergen, as well as AUC for both EAR and AUC. We compared EAR and LAR FEV 1, max. , AUC, and absolute difference in FEV 1, max to the most recovered FEV 1 3 hours post-challenge for each allergen. Max differed between the listed allergens on the list, but the LAR AUC and FEV 1, max did not differ, but not a minimum.

Source link: https://doi.org/10.21203/rs.3.rs-1986664/v1


Food insecurity and caregiver perceptions of food allergen risk by food purchase location in children with food allergies

Abstract: Without affordable, high-quality foods, satisfying the nutritional needs of children with food allergy may be difficult. No study examining the food purchase location in families of children with FA is available, although it is unlikely that any data examining the food purchase location in families of children with FA exists. This study compares a caregiver report of food insecurity, FA risk, and history of food-induced anaphylaxis in families of children with FA, who mainly purchase food items at grocery/supermarkets or convenience marts/bodegas. Families who purchased food at supermarkets in CB expressed greater food allergy and FIS issues and FIS than families who bought food at supermarkets.

Source link: https://doi.org/10.1093/tbm/ibz059


Tetrahydrocannabinol Reduces Hapten-Driven Mast Cell Accumulation and Persistent Tactile Sensitivity in Mouse Model of Allergen-Provoked Localized Vulvodynia

Vulvodynia is a common chronic pain disorder of unknown origins of persistent pain. Repeated exposures to oxazolone dissolved in ethanol on mice's labiar skin resulted in persistent genital hypersensitivity to pressure and a steady rise in labiar mast cells, which we previously reported. We introduced female mice to the hapten dinitrofluorobenzene dissolved in saline on their flanks and subsequently tested them with the same hapten or saline machine alone for ten days, either on labiar skin or in the vaginal canal.

Source link: https://doi.org/10.3390/ijms20092163


Health and economic impact of subcutaneous allergen immunotherapy in patients with pollen-induced allergic rhinoconjunctivitis: real-word evidence from the Czech Republic

History: The prevalence of allergic rhinoconjunctivitis has increased over the years, and allergen immunotherapy remains the only disease-modifying therapy. Methods: We discuss the effectiveness, safety, and costs of subcutaneous AIT for pollen-induced allergic rhinoconjunctivitis in this single-arm, non-interventional, multicenter research. Average healthcare spending decreased by 54% over the baseline pollen season without AIT, except for AIT administration.

Source link: https://doi.org/10.2217/imt-2022-0143


A genomic analysis and transcriptomic atlas of gene expression in Psoroptes ovis reveals feeding- and stage-specific patterns of allergen expression

Here we present a genomic analysis and transcriptomic atlas of gene expression in P. ovis, demonstrating feeding- and stage-specific patterns of gene expression, including novel multigene families and allergens, building on the recent publication of the P. ovis draft genome's. P. ovis allergen gene expression in stage-specific manners, including those that were also increased in u201cfed and tritonymphs, demonstrating an important feeding-related allergen development in this developmental stage. Differential expression during life-cycle stages was discovered by pair-wise analysis of gene expression and identified novel P. ovis multigene families with high levels of stage-specific expression. The genome and transcriptomic atlas described here are an important resource for the acarid-research community, but the OrcAE platform makes this freely available, facilitating further community-led curation of the draft P. ovis genome.

Source link: https://doi.org/10.1101/578120

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions