Publications by authors named "Masako Aso"

Article Synopsis
  • This study explores the potential for hepatic adaptation in healthy individuals taking therapeutic doses of acetaminophen (APAP), focusing on the incidence of serum alanine aminotransferase (ALT) elevation.
  • Over 28 days, 242 healthy participants were randomly assigned to receive either 3 g/day of APAP or a placebo, with monitoring for liver function and genetic factors related to drug metabolism.
  • Results indicated that 66% of those on APAP were tolerant with normal ALT levels, while 34% were susceptible, with some experiencing spontaneous resolution of elevated ALT levels, classified as adaptation.
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Background And Objective: Imarikiren hydrochloride (TAK-272; SCO-272) is a novel direct renin inhibitor. The objective of this study was to determine the effects of renal impairment (RI) or hepatic impairment (HI) on the pharmacokinetics and safety of imarikiren.

Methods: This phase I, open-label, parallel-group comparative study evaluated the pharmacokinetics and safety of a single 40 mg oral dose of imarikiren in RI [mild, moderate, severe, or end-stage renal disease (ESRD), and on hemodialysis] or HI (mild or moderate) subjects compared with subjects with normal renal or hepatic function.

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Ephedra Herb is an important crude drug; it is used in various Traditional Japanese Medicine (Kampo) formulations. Its significant pharmacological effects have been believed to be attributed to ephedrine and pseudoephedrine, which sometimes induce adverse effects. On the other hand, it has been reported that some of these pharmacological effects are not dependent on ephedrine or pseudoephedrine.

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Objective: A thorough QT study of favipiravir, a novel antiviral agent, was conducted using a randomized, doubleblind, 4-group, 4-period crossover, placebo-and positive-controlled (open-label moxifloxacin) design.

Materials And Methods: 56 healthy Japanese adults of both sexes received single oral doses of favipiravir 1,200 and 2,400 mg (Avigan® Tablets, Toyama Chemical Co., Ltd.

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Unlabelled: This was a phase I double-blind, randomized, placebo-controlled, 2-period, single-dose, crossover study in healthy Japanese subjects to evaluate the safety, tolerability, and pharmacokinetics of a single bolus injection of daptomycin. Twenty healthy subjects were randomized; 16 received a single intravenous (IV) administration of 6 mg/kg of daptomycin and 4 received a single intravenous administration of placebo (0.9% sodium chloride) by either bolus injection (10 s) or infusion (30 min) following an overnight fast in Periods 1 or 2.

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