Eosinophilic Esophagitis and Cow's Milk: Mechanisms, Challenges, and Treatment Perspectives.

Eosinophilic esophagitis is a chronic, antigen-driven, immune-mediated disease characterized by esophageal dysfunction and significant eosinophilic infiltration. Its rising incidence and prevalence over recent decades reflect both increased clinical awareness and the influence of environmental factors such as dietary patterns and allergen exposure. Among food allergens, cow's milk proteins are the most commonly implicated triggers, contributing to esophageal inflammation through complex immunological pathways involving both IgE-mediated and non-IgE-mediated mechanisms.

The baked side: Cow's milk and egg protein threshold dose distributions in children reacting to baked milk and baked egg.

Background: Children allergic to milk and egg, but tolerant to baked products, display higher reactivity thresholds than the general population of children allergic to milk and egg. We sought to verify the reactivity thresholds of milk- and egg-allergic children who also react to baked milk and baked egg, respectively.

Methods: We retrospectively assessed consecutive oral food challenge (OFC) for baked milk and egg between January 2018 and March 2022 in a population of baked milk- and baked-egg allergic children.

Development of a diagnostic multivariable prediction model of a positive SARS-CoV-2 RT-PCR result in healthcare workers with suspected SARS-CoV-2 infection in hospital settings.

Background: Despite declining COVID-19 incidence, healthcare workers (HCWs) still face an elevated risk of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection. We developed a diagnostic multivariate model to predict positive reverse transcription polymerase chain reaction (RT-PCR) results in HCWs with suspected SARS-CoV-2 infection.

Methods: We conducted a cross-sectional study on episodes involving suspected SARS-CoV-2 symptoms or close contact among HCWs in Bogotá, Colombia.

Hierarchical Porous FeC@Fe-N-C Catalysts from Tannin-Fe(III) Complexes for Efficient Oxygen Reduction.

The rational design of metal-nitrogen-doped carbons (M-N-C) from available and cost-effective sources featuring high electrocatalytic performance and stability is attractive for the development of viable low-temperature fuel cells. Herein, mimosa tannin, an abundant polyphenol easily extracted from the Mimosa plant, is used as a natural carbon source to produce a tannin-Fe(III) coordination complex. This process is assisted by Pluronic F127, which acts as both a surfactant and a promoter of Fe-N active sites.

Modulating the Iron Microenvironment for a Cooperative Interplay Between Fe-N-C Single Atoms and FeC Nanoclusters on the Oxygen Reduction Reaction.

The coexistence of single atoms and nanoparticles is shown to increase the oxygen reduction performance in Fe-N-C electrocatalysts, but the mechanisms underlying this synergistic effect remain elusive. In this study, model Fe-N-C electrocatalysts with controlled ratios of FeN sites and FeC nanoclusters is systematically designed and synthesized. Experiments and density functional theory (DFT) computations reveal that FeC nanoclusters near FeN sites modulate the electron density of the Fe single-atom microenvironment through an electron withdrawing effect.