Background: ADAM (a disintegrin and metalloprotease) family members, characterized by a metalloprotease and a disintegrin domain, are membrane-anchored glycoproteins involved in proteolysis and cell adhesion. ADAM8 might have an important role in allergic inflammation. It can cleave a variety of substrates and is a sheddase for VCAM-1 and CD23, the low-affinity IgE receptors.
Methods: To evaluate the contribution of ADAM8 to the pathogenesis of eosinophilic pneumonia (EP), we measured the concentrations of soluble ADAM8 (sADAM8) and its substrates, soluble VCAM-1 (sVCAM-1) and soluble CD23 (sCD23), in bronchoalveolar lavage fluid from patients with smoking-induced acute eosinophilic pneumonia (AEP), chronic idiopathic eosinophilic pneumonia (CEP), and drug-induced eosinophilic pneumonia (drug-EP).
Results: The sADAM8 and sVCAM-1 concentrations were increased in AEP and CEP. The sCD23 concentration was elevated in AEP. In AEP, but not CEP, the sADAM8 concentration significantly correlated with those of both sVCAM and sCD23.
Conclusion: The pathogenesis of AEP, CEP, and drug-EP was distinct with regard to ADAM8. Our results are the first to associate ADAM8 with eosinophilic responses and lung inflammation in humans.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000097359 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Clinical and Laboratory Characteristics and Comorbidities in Asthma Endotypes in Children.
Indian Pediatr
January 2025
Community and Family Medicine, All India Institute of Medical Sciences, Deoghar, Jharkhand, India.
Objective: To estimate the proportion of eosinophilic and non-eosinophilic (NEA) endotypes in pediatric asthma, and to compare the clinical, and laboratory characterisitics, and different comorbidities between the two endotypes in the children.
Methods: Children aged 5 to 14 years of age with clinical and/or laboratory-confirmed asthma attending the pediatric outpatient department of a tertiary care hospital in Eastern India between October 1, 2023 and March 31, 2024, were included in this cross-sectional study. Complete hemogram, absolute eosinophil count (AEC), IgE, and pulmonary function tests were performed in all patients.
Eosinopenia in bronchiectasis: A novel biomarker for morbidity and mortality.
Chron Respir Dis
January 2025
Pulmonary Institute, Rabin Medical Center - Beilinson Hospital, Petach Tikva, Israel.
Background: The paradigm of bronchiectasis is shifting away from its exclusive characterization as a neutrophilic condition. Patients with bronchiectasis and high eosinophil levels have been found to have a specific phenotype, but the clinical effect of eosinopenia remains unclear.
Method: A retrospective, single-center, observational study was conducted at a tertiary medical center.
Clinical remission in patients with severe eosinophilic asthma treated with mepolizumab: A analysis of RELIght study.
Allergy Asthma Proc
January 2025
2nd Respiratory Department, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece.
Remission of asthma can occur as part of the natural history of the disease; however, the use of biologics can result in disease remission in some patients. In this post hoc analysis of the RELIght study, we aimed to evaluate clinical remission in real life among patients treated with mepolizumab, to detect possible differences between "remitters" and "nonremitters," and to evaluate possible predictors of remission. Clinical remission was defined as the absence of asthma exacerbations, discontinuation of oral corticosteroids (OCS), achievement of asthma control (Asthma Control Test [ACT] ≥ 20), and stable or improved lung function.
View Article and Find Full Text PDFmiRNAome-metabolome wide association study reveals effects of miRNA regulation in eosinophilia and airflow obstruction in childhood asthma.
EBioMedicine
December 2024
Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA. Electronic address:
Background: There are important inter-relationships between miRNAs and metabolites: alterations in miRNA expression can be induced by various metabolic stimuli, and miRNAs play a regulatory role in numerous cellular processes, impacting metabolism. While both specific miRNAs and metabolites have been identified for their role in childhood asthma, there has been no global assessment of the combined effect of miRNAs and the metabolome in childhood asthma.
Methods: We performed miRNAome-metabolome-wide association studies ('miR-metabo-WAS') in two childhood cohorts of asthma to evaluate the contemporaneous and persistent miRNA-metabolite associations: 1) Genetic Epidemiology of Asthma in Costa Rica Study (GACRS) (N = 1121); 2) the Childhood Asthma Management Program (CAMP) (N = 312 and N = 454).
Beyond The Basics: Unveiling Superior Vena Cava Compression in Hodgkin's Lymphoma.
Cureus
November 2024
Internal Medicine/Pulmonary Critical Care, Appalachian Regional Healthcare, Harlan, USA.
Hodgkin's lymphoma (HL) is a malignancy of the lymphocytes in the lymph nodes and presents with non-specific systemic symptoms like fever, night sweats, and weight loss. While HL often involves the mediastinum, it rarely causes superior vena cava (SVC) syndrome, and eosinophilia is noted in approximately 15% of cases. Here, we report a unique presentation of HL in a 52-year-old male with a history of chronic pruritus, chronic kidney disease, and inactive hepatitis B.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!