Serum glutathione peroxidase (GSH-Px) activity and selenium concentration were compared in intrinsic asthmatic patients and non-asthmatic control subjects. Serum GSH-Px activity and selenium concentration were assessed in 46 asthmatic patients and 75 age- and sex-matched non-asthmatic subjects by spectrophotometric assay. Mean serum GSH-Px activity was lower in intrinsic asthmatic subjects (9.4 +/- 2.6 pmol NADPH oxidized/min/g of protein) than in non-asthmatic subjects (16.3 +/- 2.9 pmol NADPH oxidized/min/g of protein). Mean serum selenium was lower in intrinsic asthmatic subjects (1.15 +/- 0.23 microM) than in non-asthmatic subjects (1.98 +/- 0.27 microM). Asthmatic patients have significantly lower concentration of selenium and GSH-Px activity measured in serum.
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http://dx.doi.org/10.1515/CCLM.2003.032 | DOI Listing |
J Med Food
January 2025
Department of Chemical Technology, University of Calcutta, Kolkata, India.
Black cumin ( L.) (family Ranunculaceae) is a largely utilized therapeutic herb worldwide. This comprehensive review discusses the pharmacological benefits of black cumin seed oil, focusing on its bioactive component thymoquinone (TQ).
View Article and Find Full Text PDFJ Mol Graph Model
January 2025
Molecular Modeling and Protein Engineering Lab, Biology Division, Department of Humanities and Sciences, Indian Institute of Petroleum and Energy, Visakhapatnam, Andhra Pradesh, 530003, India. Electronic address:
Human 5-lipoxygenase (LOX) is a non-heme, Fe-containing LOX which catalyses the conversion of arachidonic acid (AA) to leukotriene A (LTA). LTA is subsequently converted to cysteinyl-LTs and LTB that cause bronchoconstriction and act as chemotactic and chemokinetic agent on human leukocytes, respectively. Leukotrienes play significant roles in inflammation in asthma, cardiovascular diseases, allergic rhinitis, atopic dermatitis, inflammatory bowel disease, rheumatoid arthritis, psoriasis and many more.
View Article and Find Full Text PDFCrit Rev Toxicol
January 2025
Syngenta, Bracknell, United Kingdom.
While progress has been made in recent years, there are still no suitable and accepted , or models that can be used to accurately predict whether a chemical substance has the intrinsic property to cause immune-mediated chemical respiratory allergy, typically manifested as allergic asthma or allergic rhinitis which represents a severe health hazard. Regulatory authorities have relied primarily on clinical evidence (case reports, clinical databases, worker exposure studies) to classify substances as respiratory sensitizers, but this evidence can lack a proven immunological mechanism which is necessary to identify substances which can cause life-long sensitization and clinically relevant allergic symptoms in the respiratory tract in an exposed population (such respiratory allergens may be considered as "true" sensitizers, in analogy to the definition of skin sensitization, and in contrast to respiratory irritants). In light of this, the European Center for Ecotoxicology and Toxicology of Chemicals convened a Task Force to evaluate the types of clinical methods and data sources and the implications of relying on such data for regulatory decision making from a scientific perspective.
View Article and Find Full Text PDFERJ Open Res
November 2024
Division of Pulmonary, Critical Care and Sleep Medicine, University of Kansas School of Medicine, Kansas City, KS, USA.
Background: Idiopathic interstitial pneumonias (IIPs), such as idiopathic pulmonary fibrosis and interstitial pneumonia with autoimmune features, present diagnostic and therapeutic challenges due to their heterogeneous nature. This study aimed to identify intrinsic molecular signatures within the lung microenvironment of these IIPs through proteomic analysis of bronchoalveolar lavage fluid (BALF).
Methods: Patients with IIP (n=23) underwent comprehensive clinical evaluation including pre-treatment bronchoscopy and were compared with controls without lung disease (n=5).
Heliyon
October 2024
Ralph E. Martin Department of Chemical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA.
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