Tetrodotoxin (TTX) is starting to appear in molluscs from the European waters and is a hazard to seafood consumers. This toxin blocks sodium channels resulting in neuromuscular paralysis and even death. As a part of the risk assessment process leading to a safe seafood level for TTX, oral toxicity data are required. In this study, a 4-level Up and Down Procedure was designed in order to determine for the first time the oral lethal dose 50 (LD) and the No Observed Adverse Effect Level (NOAEL) in mice by using an accurate well-characterized TTX standard.
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http://dx.doi.org/10.3390/toxins9030075 | DOI Listing |
Naunyn Schmiedebergs Arch Pharmacol
January 2025
Nanotechnology and Advanced Materials Central Lab., Agricultural Research Center, Giza, Egypt.
Nickel pollution adversely affects human health and causes various disorders, mainly hepatic and renal dysfunction. The present work focused on a comparative evaluation of the pure form of curcumin (CU) with curcumin-encapsulated chitosan nanoconjugates (CS/CU NCs), on mitigation of the delirious effects of Ni on hepatorenal tissue. Forty-two male rats were allocated into 6 groups (n = 7 for each) as follows: (1) control, (2) CU, (3) CS/CU NCs, (4) Ni, (5) Ni + CU, (6) Ni + CS/CU NCs.
View Article and Find Full Text PDFFront Public Health
January 2025
Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.
The burden of disease and death attributable to environmental pollution is a growing public health challenge worldwide, particularly in developing countries. While the adverse effects of environmental pollution on oral health have garnered increasing attention, a comprehensive and systematic assessment remains lacking. This article delves into the intricate relationship between environmental pollution and oral health, highlighting significant impacts on various aspects such as dental caries, periodontal diseases, oral facial clefts, cancer, as well as other oral diseases.
View Article and Find Full Text PDFCureus
December 2024
Pulmonary and Critical Care Medicine, Rutgers New Jersey Medical School University Hospital, Newark, USA.
Enteral administration of vancomycin is the standard treatment for () colitis and is presumed to have no systemic absorption. In critically ill patients, however, especially with multi-organ failure, enteral absorption of vancomycin is unpredictable and can cause severe toxicity if it remains unrecognized. We therefore report a case of systemic absorption of enteric vancomycin in a patient with severe colitis.
View Article and Find Full Text PDFDrugs R D
January 2025
Research Division, Federal Institute of Drugs and Medical Devices (BfArM), Kurt-Georg-Kiesinger-Allee 3, 53175, Bonn, Germany.
Introduction: In November 2018, the European Medicines Agency (EMA) restricted the use of fluoroquinolones (used by mouth, injections or inhalation) in the context of a referral due to long-lasting and potentially irreversible adverse drug reactions (ADRs). Fluoroquinolones should no longer be used to treat mild or moderate bacterial infections unless other antibacterials cannot be used.
Objectives: The first aim of our study was to analyze whether in the period before compared with after the referral the characteristics of spontaneous ADR reports related to fluoroquinolones differed and whether specific ADRs were more frequently reported for fluoroquinolones compared with cotrimoxazole.
Arch Microbiol
January 2025
Department of Chemistryand Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University Júlio de Mesquita Filho, São José do Rio Preto, SP, Brazil.
Candida is a commensal fungus of clinical interest that commonly lives in oral cavity and intestine but can become an opportunist microrganism and cause severe infections. A serie of 10 aminochalcones were designed and synthetized to obtain compounds anti-Candida with potent and broad-spectrum activity. The most active compound J34 demonstrated excellent in vitro activity against Candida albicans, Candida tropicalis, Candida parapsilosis, Candida glabrata and Candida krusei with minimum inhibitory concentration between 1.
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