In this study the authors investigated myeloperoxidase release from peripheral blood neutrophils isolated from patients with allergic respiratory tract diseases and from healthy subjects, induced by selected extrinsic allergens. We have observed the same degree of myeloperoxidase release from neutrophils isolated from both patients with allergic respiratory tract diseases and healthy subjects after stimulation by selected allergens (Dermatophagoides pteronyssinus, Grass mix). Moreover, control allergens (to which allergic persons were not sensitized) also caused myeloperoxidase release from neutrophils isolated from patients with allergic diseases of the airways. The authors suggest that recently postulated hypothesis concerning participation of neutrophil in the pathogenesis of allergic reactions as the alternative target cell cannot be accepted in the light of these observations.
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J Am Chem Soc
January 2025
School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
Photodynamic therapy (PDT) holds promise as a cancer treatment modality due to its potential for enhanced therapy precision and safety. To enhance deep tissue penetration and minimize tissue adsorption and phototoxicity, developing photosensitizers activated by second near-infrared window (NIR-II) light shows significant potential. However, the efficacy of PDT is often impeded by tumor microenvironment hypoxia, primarily caused by irregular tumor vasculature.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China.
Effective delivery and controlled release of metallo-prodrugs with sustained activation and rapid response feed the needs of precise medicine in metal chemotherapeutics. However, gold-based anticancer drugs often suffer from detoxification binding and extracellular transfer by sulfur-containing peptides. To address this challenge, we integrate a thiol-activated prodrug strategy of newly prepared hypercoordinated carbon-centered gold(I) clusters (HCGCs) with their photosensitization character to augment the mitochondrial release of Au(I) in tumors.
View Article and Find Full Text PDFJ Allergy Clin Immunol Glob
February 2025
Department of Internal Medicine, Division of Rheumatology, Allergy and Immunology, Cincinnati, Ohio.
Background: Omalizumab (OMA), a recombinant humanized IgG monoclonal anti-IgE antibody, is approved for treatment for chronic spontaneous urticaria (CSU) refractory to second-generation H-antihistamine (SGAH) therapy. However, currently, there are no validated serum biomarkers to reliably predict response to OMA treatment.
Objective: We explored the real-world clinical utility of using serum biomarkers for predicting response to OMA for CSU patients with disease refractory to high-dose SGAH therapy.
Front Cell Dev Biol
January 2025
Dipartimento di Scienze Biomediche e Cliniche, Università degli Studi di Milano, Milano, Italy.
Introduction: Endoplasmic reticulum aminopeptidases 1 (ERAP1) and 2 (ERAP2) modulate a plethora of physiological processes for the maintenance of homeostasis in different cellular subsets at both intra and extracellular level.
Materials And Methods: In this frame, the extracellular supplementation of recombinant human (rh) ERAP1 and ERAP2 (300 ng/ml) was used to mimic the effect of stressor-induced secretion of ERAPs on neutrophils isolated from 5 healthy subjects. In these cells following 3 h or 24 h rhERAP stimulation by Western Blot, RT-qPCR, Elisa, Confocal microscopy, transwell migration assay, Oxygraphy and Flow Cytometry we assessed: i) rhERAP internalization; ii) activation; iii) migration; iv) oxygen consumption rate; v) reactive oxygen species (ROS) accumulation; granule release; vi) phagocytosis; and vii) autophagy.
JCI Insight
January 2025
Division of Environmental Genetics and Molecular Toxicology, University of Cincinnati College of Medicine, Cincinnati, United States of America.
Endometriosis is a chronic gynecological disease that affects 1 in 10 reproductive-aged women. Most studies investigate established disease; however, the initiation and early events in endometriotic lesion development remain poorly understood. Our study used neutrophils from human menstrual effluent from subjects with and without endometriosis for immunophenotyping, and a mouse model of endometriosis and a mouse endometriosis cell line to determine the role of neutrophils in the initiating events of endometriosis, including attachment and survival of minced endometrial pieces.
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