Publications by authors named "Frances Stringer"

Ojbective: To explore temporal trends in antidiabetes drug (ADD) prescribing and intensification patterns, along with glycemic levels and comorbidities, and possible benefits of novel ADDs in delaying the need for insulin initiation in patients diagnosed with type 2 diabetes.

Research Design And Methods: Patients with type 2 diabetes aged 18-80 years, who initiated any ADD, were selected ( = 1,023,340) from the U.S.

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Background: This study applied a pharmacodynamic model-based approach to evaluate the long-term durability and glycemic control of pioglitazone in comparison with other oral glucose-lowering drugs in Japanese type 2 diabetes mellitus (T2DM) patients.

Subjects And Methods: Japanese T2DM patients were enrolled in a prospective, randomized, open-label, blinded-end point study and received pioglitazone with or without other oral glucose-lowering drugs (excluding another thiazolidinedione [TZD]) (n=293) or oral glucose-lowering drugs excluding TZD (n=294). Treatment was adjusted to achieve glycosylated hemoglobin (HbA1c) <6.

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The pharmacokinetics of sipoglitazar, a peroxisome proliferator activated receptor agonist, are subject to high inter-individual variability resulting from a polymorphism of the UGT2B15 genotype. The aim of the current analysis was to apply a PK-PD model-based approach to evaluate the influence of UGT2B15 driven pharmacokinetic differences on the clinical response. Efficacy and safety of sipoglitazar compared to placebo were assessed in Type 2 Diabetes Mellitus patients in two Phase II randomized, double-blind studies (sipoglitazar once daily: 8, 16, 32, or 64 mg; sipoglitazar twice daily: 16 or 32 mg; rosiglitazone 8 mg once daily and placebo for 13 weeks; n = 780).

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Sipoglitazar is a peroxisome proliferator-activated receptor α, δ, and γ agonist. During phase I, a wide distribution of clearance between individuals was observed. Hypothesized to result from a polymorphism in the uridine 5'-diphospate-glucuronosyltransferase (UGT)2B15 enzyme, pharmacogenetic samples were collected from each individual for genotyping UGT2B15 in a subsequent phase I trial in healthy subjects (n = 524) and in 2 phase II trials in type 2 diabetes subjects (n = 627), total genotype frequency was as follows: *1/*1 (22%), *1/*2 (51%), and *2/*2 (27%).

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Purpose: Sipoglitazar was a novel, azolealkanoic acid derivative that possesses selective activity for the peroxisome proliferator-activated receptors (PPAR) PPARγ, PPARα, and PPARδ. The compound undergoes phase II biotransformation by conjugation catalyzed by UDP-glucuronosyltransferase (UGT). The aim of this analysis was to explore the influence of genetic polymorphism in UGT on the pharmacokinetics of sipoglitazar.

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A molecularly imprinted polymer (MIP) prepared using propranolol as template, methacrylic acid (MA) and ethylene glycol dimethacrylate (EGDMA) was used to develop SPE methods in "reversed-" and normal phase mode for an analogue of propranolol (M47070) with another analogue (M45655) used as an internal standard. The compounds were also extracted in reversed-phase mode onto a non-imprinted polymer. It was necessary to employ a protein precipitation step ahead of MIP-SPE in order to facilitate downstream analysis.

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