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  • 1
    ISSN: 1573-904X
    Keywords: prinomide tromethamine pharmacokinetics ; Langmuir-type protein binding ; competitive cobinding ; in vivo metabolite–protein interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Prinomide tromethamine, a nonsteroidal antiinflammatory drug, was orally administered at doses of 250, 500, and 1000 mg every 12 hr for 28 days to healthy male volunteers. The pharmacokinetic behavior of prinomide and its primary plasma metabolite displayed nonlinear characteristics, while those of free prinomide and its metabolite were dose proportional. The nonlinear pharmacokinetic behavior of total prinomide and p-hydroxy metabolite was found to be caused by both saturable and mutually dependent competitive Langmuir-type plasma protein binding between prinomide and its p-hydroxy metabolite. The extent of the protein interaction displayed at steady state was due to the extensive accumulation of the p-hydroxy metabolite. While ligand–protein interactions are known for xenobiotic competitors, the characteristic behavior of prinomide is the first known example to be reported for a competitive protein interaction between a xenobiotic and its own in vivo generated metabolite. The findings of this study may have implications regarding the disposition of other extensively bound nonsteroidal antiinflammatory drugs with long-lived metabolites.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0173-0835
    Keywords: Human identification ; Forensic ; Polymerase chain reaction ; DNA typing ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: DNA typing techniques are among the most advanced tools for human identification and can contribute to the identification of poorly preserved skeletal remains. Ten thousand people are thought to have been killed during the last dictatorship in Argentina (1976-1983) and there are few official records on the identity of the victims or the location of burials. A mass grave containing 340 skeletons was excavated using archeological methods. A small number of individuals was identified by traditional forensic methods and one family group by mitochondrial DNA (mtDNA) analysis. Due to the lack of antemortem physical information on many of the victims, the application of molecular methods is imperative to speed up the identification process. We have tested two molecular screening methods, Y chromosome-specific short tandem repeats (DYS19, DYS385, DYS389 I, DYS389 II, DYS390, DYS391, DYS392, DYS393) and amplification of autosomal microsatellites using nested primers. These methods can complement solely matrilineal mtDNA sequence data in the identification of “missing” persons.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2019-07-11
    Description: A set of three-dimensional failure criteria for laminated fiber-reinforced composites, denoted LaRC04, is proposed. The criteria are based on physical models for each failure mode and take into consideration non-linear matrix shear behaviour. The model for matrix compressive failure is based on the Mohr-Coulomb criterion and it predicts the fracture angle. Fiber kinking is triggered by an initial fiber misalignment angle and by the rotation of the fibers during compressive loading. The plane of fiber kinking is predicted by the model. LaRC04 consists of 6 expressions that can be used directly for design purposes. Several applications involving a broad range of load combinations are presented and compared to experimental data and other existing criteria. Predictions using LaRC04 correlate well with the experimental data, arguably better than most existing criteria. The good correlation seems to be attributable to the physical soundness of the underlying failure models.
    Keywords: Composite Materials
    Type: NASA/TM-2005-213530 , L-19089
    Format: application/pdf
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