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Integrative Assessment of Mixture Toxicity of Household Chemicals Using the Toxic Unit Approach and Mode of Action.
Toxicology
January 2025
College of Pharmacy, Kyungsung University, Busan 48434, Republic of Korea. Electronic address:
Household chemicals used daily are often combined, leading to inhalation exposure to mixtures. However, methods for assessing their toxic effects are limited. This study proposes an in vitro assay strategy for evaluating household chemical mixtures using benzalkonium chloride (BKC) and didecyldimethylammonium chloride (DDAC), a common disinfectant.
View Article and Find Full Text PDFResorcinol-based Bolaamphiphilic Quaternary Ammonium Compounds.
ChemMedChem
January 2025
Villanova University, Chemistry, 800 E Lancaster Ave, 19085, Villanova, UNITED STATES OF AMERICA.
Quaternary ammonium compounds (QACs) play crucial disinfectant roles in healthcare, industry, and domestic settings. Most commercially utilized QACs like benzalkonium chloride have a common architectural theme, leading to a rise in bacterial resistance and urgent need for novel structural classes. Some potent QACs such as chlorhexidine (CHX) and octenidine (OCT) feature a bolaamphiphilic architecture, comprised of two cationic centers at the molecular periphery and a non-polar region connecting them; these compounds show promise to elude bacterial resistance mechanisms.
View Article and Find Full Text PDFNot All Antiseptic Solutions Are Equivalent in Removing Biofilm: A Comparison Across Different Orthopaedic Surfaces.
J Bone Joint Surg Am
January 2025
Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY.
Background: Antiseptic solutions are commonly utilized during total joint arthroplasty (TJA) to prevent and treat periprosthetic joint infection (PJI). The purpose of this study was to investigate which antiseptic solution is most effective against methicillin-sensitive Staphylococcus aureus (MSSA) and Escherichia coli biofilms established in vitro on orthopaedic surfaces commonly utilized in total knee arthroplasty: cobalt-chromium (CC), oxidized zirconium (OxZr), and polymethylmethacrylate (PMMA).
Methods: MSSA and E.
Experiments and modelling of pulmonary surfactant disruption by aerosolised compounds.
Colloids Surf B Biointerfaces
December 2024
The National Research Centre for the Working Environment, Lersø Parkallé 105, Copenhagen DK-2100, Denmark. Electronic address:
Within the deep lung, pulmonary surfactant coats the air-liquid interface at the surface of the alveoli. This complex mixture of amphiphilic molecules and proteins modifies the surface tension and mechanical properties of this interface to assist with breathing. In this study, we examine the effects on pulmonary surfactant function by two industrially used compounds composing surfactants and polymers.
View Article and Find Full Text PDFVirucidal activity of olanexidine gluconate against SARS-CoV-2.
Access Microbiol
January 2025
Department of Clinical Microbiology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.
Antiseptics have been used for infection control against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Ethanol (EtOH) was found to be effective against SARS-CoV-2, while chlorhexidine gluconate (CHG) was less effective. Therefore, virucidal activity may differ between different classes of antiseptic agents.
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