New Frontiers in Asthma Chest Imaging.

Modern pulmonary imaging can reveal underlying pathological and pathophysiological changes in the lungs of people with asthma, with important clinical implications. A multitude of imaging modalities are now used to examine underlying structure/function relationships including computed tomography, magnetic resonance imaging, optical coherence tomography, and endobronchial ultrasound. Imaging-based biomarkers from these techniques, including airway dimensions, blood vessel volumes, mucus scores, ventilation defect extent and air trapping extent, often have increased sensitivity compared to traditional lung function measurements, and are increasingly used as endpoints in clinical trials.

A gut commensal protozoan determines respiratory disease outcomes by shaping pulmonary immunity.

The underlying mechanisms used by the intestinal microbiota to shape disease outcomes of the host are poorly understood. Here, we show that the gut commensal protozoan, Tritrichomonas musculis (T.mu), remotely shapes the lung immune landscape to facilitate perivascular shielding of the airways by eosinophils.

Intracerebral Hemorrhage with Churg Strauss-Syndrome: Multidisciplinary Collaboration and Literature Review.

Objective: To explore the clinical characteristics and treatment outcomes of intracerebral hemorrhage in eosinophilic granulomatosis with polyangiitis (EGPA).

Methods And Patient Presentation: We report an 18-year-old student of EGPA complicated with intracerebral hemorrhage. The laboratory tests showed a continuous increase in eosinophils.

Differential Control of T-Cell Subsets by Recombinant Human PLD2 in a Mouse Model of Allergic Asthma.

Background: Phospholipase D2 (PLD2) enzymes are expressed on the cytoplasmic membrane of bacteria, fungi, plants, and animals. Recently, extensive research has linked PLD2 to the chronic inflammatory activity of cells. Allergic asthma is a chronic airway inflammation disease.

Association of blood inflammatory phenotypes and asthma burden in children with moderate-to-severe asthma.

Background: Underlying immunological mechanisms in children with moderate-to-severe asthma are complex and unclear. We aimed to investigate the association between blood inflammatory parameters and asthma burden in children with moderate-to-severe asthma.

Methods: Blood inflammatory parameters (eosinophil and neutrophil counts and inflammatory mediators using multiplex immunoassay technology) were measured in children (6-17 years) with moderate-to-severe asthma from the SysPharmPediA cohort across four European countries.

The effect of benralizumab on inflammation in severe asthma: a real-life analysis.

Background: Benralizumab is a monoclonal antibody treatment for severe eosinophilic asthma (SEA). Few studies investigated its role in airway inflammation and its correlation with lung function.

Objectives: The aim of the present study is to assess its effect after 1 year of treatment, focusing on airway inflammation.

Prospective Randomized Study on Switching Triple Inhaler Therapy in COPD from Multiple Inhaler Devices to a Single Inhaler Device in a Chinese Population.

Background: Triple therapy with inhaled corticosteroids and dual bronchodilator was recommended in chronic obstructive pulmonary disease (COPD) patients who had exacerbations and eosinophilia. It can be administered by single inhaler (SITT) or multiple inhaler (MITT). There was lack of evidence of the benefits of SITT over MITT in Chinese population, especially on switching from existing MITT to SITT.

Pulmonary granuloma formation during latent infection in C3HeB/FeJ mice involves progression through three immunological phases.

Unlabelled: is a fungal pathogen that can cause lethal disease in immunocompromised patients. Immunocompetent host immune responses, such as formation of pulmonary granulomas, control the infection and prevent disseminated disease. Little is known about the immunological conditions establishing the latent infection granuloma in the lungs.

Εosinophilic Chronic Obstructive Pulmonary Disease. What Do We Know So Far?

The latest advances in asthma treatment have highlighted the significance of eosinophilia and the possible role of some pro-eosinophilic mediators, like interleukins (IL) IL-5, IL-4/IL-13, and IL-33 in the disease's pathogenesis. Considering that a subgroup of patients with chronic obstructive pulmonary disease (COPD) may have blood eosinophilia akin to that seen in asthma, numerous studies in the last decade have suggested that eosinophilic COPD is a separate entity. While the exact role of blood eosinophils in the pathophysiology of COPD remains unclear, eosinophilia seems to increase the effectiveness of corticosteroid therapy.

Levels of total IgE versus specific IgE during childhood for defining and predicting T2-high asthma.

Background: T2-high asthma is characterized by elevated blood eosinophils (b-eos), and/or fractional exhaled nitric oxide (FeNO), and/or being "allergy-driven", which is not well-defined.

Objective: To investigate the role of total and specific immunoglobulin E (tIgE/sIgE) for defining and predicting T2-high asthma in childhood as biomarkers of "allergy-driven".

Methods: We utilized data from the COPSAC2000 (n = 411) and COPSAC2010 (n = 700) mother-child cohorts with repeated measurements of tIgE, sIgE, b-eos and FeNO through childhood.

Evaluation of cephalosporin allergy: Survey of drug allergy experts.

Background: Since the publication of the 2022 Drug Allergy Practice Parameters (DAPP) of the American Academy of Allergy, Asthma & Immunology (AAAAI) and American College of Allergy, Asthma & Immunology (ACAAI), it is unclear the extent to which the simplified and risk-stratified evaluation of cephalosporin allergy has been incorporated into allergy practice.

Objective: We aimed to assess current cephalosporin allergy testing practices using real case examples.

Methods: An 18-question REDCap survey was sent to the 136 members of the Adverse Reactions to Drugs, Biologics and Latex (ARDBL) Committee of the AAAAI between February and April 2023.

Impact of Individual Characteristics on Hospital Outcomes in Exacerbated COPD in a Biomass-Exposed Turkish Population.

: Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity and mortality globally, and factors such as biomass exposure, demographic characteristics, and comorbidities significantly influence patient outcomes during exacerbations. : This study aims to clarify the impact of patient characteristics on key hospital outcomes, including ICU admissions, hospital length of stay, and in-hospital mortality, focusing on the contextual role of biomass exposure rather than its direct impact. : Using a multicenter, retrospective cohort design, we analyzed the medical records of patients admitted with COPD exacerbations from January 2021 to December 2023.

Leptin augments IL-13-induced airway eotaxins and submucosal eosinophilia in obesity-associated asthma.

Background: Airway tissue eosinophilia can be an observed feature of obesity-associated type 2 (T2) asthma, but the processes mediating this inflammation are unknown.

Objective: To investigate a process whereby leptin, an adipokine elevated in obesity, potentiates pulmonary eosinophilia and eotaxin production by airway fibroblasts in T2 asthma.

Methods: We assessed associations between body mass index and airway eosinophilia as well as leptin and eotaxin production in 78 participants with asthma, 36 of whom exhibited obesity.

Updated insights into adverse events associated with mepolizumab: a disproportionality analysis from the FDA adverse event reporting system database.

Background: Mepolizumab, a monoclonal antibody targeting interleukin-5, is used to treat severe eosinophilic asthma and other eosinophilia-related conditions. Given its growing use, there is a pressing need for the latest data to improve the understanding and management of its adverse events (AEs). This study aimed to investigate the safety of mepolizumab by analyzing the pharmacovigilance database of the US Food and Drug Administration.