954 resultados para Transformers : Dark of the Moon
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"By Will. Smelley."-Catalogue of a collection of early newspapers and essayists formed by the late J.T. Hope. no. 564.
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Three pages at end contain a publishers' advertisement.
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Mode of access: Internet.
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Campbell 10. First issue with plates dated 1826.
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Mode of access: Internet.
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Includes index.
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Mode of access: Internet.
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Mode of access: Internet.
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Includes index.
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Shaw & Shoemaker
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Mode of access: Internet.
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Mode of access: Internet.
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Purpose. The aims of this study are to evaluate whether cytochrome P450 (CYP)2D1/2D2-deficient dark agouti (DA) rats and/or CYP2D1/2D2-replete Sprague-Dawley (SD) rats are suitable preclinical models of the human, with respect to mirroring the very low plasma concentrations of metabolically derived oxymorphone seen in humans following oxycodone administration, and to examine the effects of streptozotocin-induced diabetes on the pharmacokinetics of oxycodone and its metabolites, noroxycodone and oxymorphone, in both rodent strains. Methods. High-performance liquid chromatography-electrospray ionization-tandem mass spectrometry was used to quantify the serum concentrations of oxycodone, noroxycodone, and oxymorphone following subcutaneous administration of bolus doses of oxycodone (2 mg/kg) to groups of nondiabetic and diabetic rats. Results. The mean (+/- SEM) areas under the serum concentration vs. time curves for oxycodone and noroxycodone were significantly higher in DA relative to SD rats (diabetic, p < 0.05; nondiabetic, p < 0.005). Serum concentrations of oxymorphone were very low (< 6.9 nM). Conclusions. Both DA and SD rats are suitable rodent models to study oxycodone's pharmacology, as their systemic exposure to metabolically derived oxymorphone (potent mu-opioid agonist) is very low, mirroring that seen in humans following oxycodone administration. Systemic exposure to oxycodone and noroxycodone was consistently higher for DA than for SD rats showing that strain differences predominated over diabetes status.