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A synthetic cyclic peptide for promoting antigen presentation and immune activation.
NPJ Vaccines
January 2025
School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.
Cyclic peptides are often used as scaffolds for the multivalent presentation of drug molecules due to their structural stability and constrained conformation. We identified a cyclic deca-peptide incorporating lipoamino acids for delivering T helper and B cell epitopes against group A Streptococcus (GAS), eliciting robust humoral immune responses. In this study, we assessed the function-immunogenicity relationship of the multi-component vaccine candidate (referred to as VC-13) to elucidate a mechanism of action.
View Article and Find Full Text PDFBio-based plasticizer Babassu oil for custom-made conductive additive-manufacturing filaments: towards 3D-printed electrodes applied to cocaine detection.
Mikrochim Acta
December 2024
Chemistry Institute, Federal University of Uberlândia, Uberlândia, MG, 38408-100, Brazil.
Babassu (Atallea sp.), a native palm tree from South America's Amazon produces bio-oil and biochar with significant potential for industrial applications. Babassu oil as a bio-based plasticizer is reported here for the first time to replace petrochemical alternatives in the production of conductive filaments for additive manufacturing purposes.
View Article and Find Full Text PDFAn Improved GC-MS/MS Method for a Fast Multidrug Analysis in Hair.
Drug Test Anal
December 2024
Analytical Toxicology Laboratory, Analytical Toxicology Division, Health Sciences Authority, Singapore.
This study presents the development and validation of a drug testing method in hair, employing a semi-automated sample preparation procedure and gas chromatography-tandem mass spectrometry (GC-MS/MS) for simultaneous multidrug analysis in hair. The method aims to detect and quantify multiple drugs in hair, including amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine, 3,4-methylenedioxymethamphetamine, ketamine, norketamine, cocaine, benzoylecgonine, morphine, codeine and 6-monoacetylmorphine, using a comprehensive procedure involving decontamination, pulverization, clean-up using supported-liquid extraction (SLE) and a two-step derivatization process. The method validation included specificity, linearity, limit of detection (LOD), limit of quantification (LOQ), precision, accuracy, carryover, robustness and stability.
View Article and Find Full Text PDFSeeking under threat of adversity: assessing control over reward pursuit in rats.
Psychopharmacology (Berl)
December 2024
Department of Population Health Sciences, Unit of Animals in Science and Society, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
Rationale: Substance use disorder (SUD) is a chronic relapsing brain disorder that is characterised by loss of control over substance use. A variety of rodent models employing punishment setups have been developed to assess loss of control over substance use, i.e.
View Article and Find Full Text PDFCritical Involvement of Actin Stabilizer TMOD2 in Cocaine-Induced Neuroadaptations.
J Neurosci
December 2024
Heinsbroek and Peters Labs, University of Alabama at Birmingham, Birmingham, Alabama 35233
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