Contribution of Glucose to Crystallization of Phenytoin in Injectable Dosage Form by Dilution with Infusion Fluids

The crystallization of phenytoin occurring after its dilution with infusion fluid is a major concern in the clinical use of injectable phenytoin. To gain further understanding of the crystallization, this study assessed details of the involvement of glucose in this action. For sample preparation, ph...

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Veröffentlicht in:Chemical & pharmaceutical bulletin 2014/10/01, Vol.62(10), pp.989-993
Hauptverfasser: Onuki, Yoshinori, Hasegawa, Naoki, Ikegami-Kawai, Mayumi, Suematsu, Takako, Sakurai, Satoshi, Shirozu, Shunsuke, Tsubuki, Masayoshi, Obata, Yasuko, Takayama, Kozo
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container_issue 10
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container_title Chemical & pharmaceutical bulletin
container_volume 62
creator Onuki, Yoshinori
Hasegawa, Naoki
Ikegami-Kawai, Mayumi
Suematsu, Takako
Sakurai, Satoshi
Shirozu, Shunsuke
Tsubuki, Masayoshi
Obata, Yasuko
Takayama, Kozo
description The crystallization of phenytoin occurring after its dilution with infusion fluid is a major concern in the clinical use of injectable phenytoin. To gain further understanding of the crystallization, this study assessed details of the involvement of glucose in this action. For sample preparation, phenytoin crystals were created by diluting the injectable phenytoin with infusion fluids with different glucose concentrations at different temperature, and then the characteristics of the crystallization (e.g., crystal size in the long direction, accumulated amount over 24 h, and crystallization rate constant) were measured. Results of the analysis of variance indicated that the glucose concentration and temperature had significant impacts on the crystallization. The mode of action of the glucose concentration was suggested to be different from that of the incubation temperature. This study also examined the molecular mobility of components (i.e., glucose, propylene glycol, phenytoin) in the admixtures using diffusion NMR techniques. The findings will provide valuable information for the clinical use of injectable phenytoin.
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subjects Crystallization
crystallization characteristic
diffusion coefficient
Glucose - chemistry
glucose infusion fluid
Johnson–Mehl–Avrami model
Kinetics
Magnetic Resonance Spectroscopy
phenytoin
Phenytoin - chemistry
Propylene Glycol - chemistry
Solubility
Temperature
title Contribution of Glucose to Crystallization of Phenytoin in Injectable Dosage Form by Dilution with Infusion Fluids
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