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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Pharmaceutical Investigation
Journal Basic Information
Journal DOI :
The Korean Society of Pharmaceutical Sciences and Technology
Editor in Chief :
Volume & Issues
Volume 19, Issue 4 - Dec 1989
Volume 19, Issue 3 - Sep 1989
Volume 19, Issue 2 - Jun 1989
Volume 19, Issue 1 - Mar 1989
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Development of Optically Active Chelate Resin for Direct Resolution of Enantiomers(III)-Synthesis of Copper(II) L-Proline Chelate Resin and Resolution of Enantiomers-
Kim, Kil-Soo ; Jeon, Dong-Won ;
Journal of Pharmaceutical Investigation, volume 19, issue 3, 1989, Pages 117~121
A metal complex, copper (II) L-proline was chemically bound to ethylene glycol dimethacrylate and divinylbenzene crosslinked chloromethylated polystyrene and they were used as chiral chelate resin matrix for column chromatography to resolve enantiomers of DL-amino acids. The L-enantiomers eluted first and the degree of resolution on the polymer crosslinked with ethylene glycol dimethacrylate was superior to the polymer crosslinked with divinylbenzene.
Preparation and Evaluation of Acetaminophen Tablets
Jun, Young-Bin ; Min, Byung-Hee ; Kim, Seung-In ; Kim, Young-Il ;
Journal of Pharmaceutical Investigation, volume 19, issue 3, 1989, Pages 123~129
A study was made to investigate the effects of various binders on the physical properties of acetaminophen granules and tablets prepared by wet and fluidized bed granulation methods. The binders used were povidone (K-90), hydroxypropylcellulose (HPC-L) and gelatin. The fluidized bed granules were more porous than the wet massed, and the tablets prepared by fluidized system showed improved disintegration and dissolution characteristics. The dissolution rate was fast in the order of gelatin>povidone>hydroxypropylcellulose in tablets prepared by fluidized system, and povidone>hydroxypropylcellulose>gelatin in tablets prepared by wet granulation.
Bioavailability of Commercially Available Aspirin Tablets in Human
Lee, Jin-Hwan ; Choi, Jun-Shik ; Baik, Chai-Sun ; Burm, Jin-Pil ;
Journal of Pharmaceutical Investigation, volume 19, issue 3, 1989, Pages 131~136
This study was attempted to investigate the dissolution rate and the bioavailability after oral administration of commercially available aspirin tablets in normal volunteers. The dissolution test was conducted in artificial gastric juice using basket method with three aspirin preparations (A, B and C) which were chemically equivalent. The results were as follows; The dissolution rate was higher in the order of three different brand B>A >C. Area under the blood concentration and peak blood concentration were larger in the order of brand A>B>C. Absorption rate constant and peak time were larger in the order of brand B>A>C, and there was a little difference in elimination rate constant and biological half-life. The correlation of the dissolution rate and absorption rate constant, as well as correlation of the dissolution rate and peak time showed significant linear relationship respectively. From the results of this experiment, it can be concluded that the bioavailability of aspirin tablets showed much difference according to commercial preparations, and that the bioavailability of aspirin tablets in human may be predicted from the results of dissolution rate studies.
Studies on Higher Fungi in Korea (IV)-Effect of Tricholoma matsutake Extract on Hyperlipemia in Rats
Eun, Jae-Soon ; Yang, Jae-Heon ; Kim, Dae-Geun ;
Journal of Pharmaceutical Investigation, volume 19, issue 3, 1989, Pages 137~143
This study was attempted to investigate the effect of Tricholoma matsutake on experimentally induced hyperlipemia in rats. The levels of cholesterol, triglyceride and phospholipid were measured. Diagnostic attention has been paid to the cholesterol concentration associated with high density lipoprotein (HDL), which appears to be inversely related to the incidence of coronary artery disease. For these reasons, determination of HDL-cholesterol has significant meaning. Total cholesterol was determined by Abell-Kindall method, and to measure HDL-cholesterol, serum low density lipoproteins (LDL) were first selectively precipitated by HDL-precipitating reagent. The results obtained were as follows : 1) The level of total cholesterol in serum of hyperlipemic rats was decreased by oral administration of Tricholoma matsutake extract. 2) The level of HDL-cholesterol was increased by the mushroom extract. 3) The level of triglyceride was significantly decreased by the mushroom extract. 4) The level of phospholipid was slightly decreased by the mushroom extract.
Controlled Release of Econazole Nitrate from Skin Adhesive Methyl Methacrylate-Butyl Methacrylate Copolymer-Povidone Films
Chun, In-Koo ; Lee, Ji-Eun ;
Journal of Pharmaceutical Investigation, volume 19, issue 3, 1989, Pages 145~154
Methyl methacrylate-butyl methacrylate copolymer (MMBM)-povidone (PVP) films were investigated as a potential topical drug delivery system for the controlled release of econazole nitrate as a model drug. The effect of changes in film composition, drug concentration, film thickness, pH and temperature of release medium on the in vitro release of econazole nitrate were studied. The release rate constant was found to be increased with increasing povidone content in dry films. Drug release followed zero-order kinetics in the initial stage and then release rate increased gradually with time, espicially in the films having larger proportions of PVP. The release rate was found to be dependent on drug content, film thickness, the pH and temperature of release medium. Antimicrobial test showed that microbial growth was inhibited markedly with increasing proportions of PVP in films. Also drug content and film thickness affected the antimicrobial activity.
Studies on Dissolution Rate of Drugs (XVII)-Dissolution Characteristics of Chlorpropamide Dispersed in Sodium Deoxycholate-
Moon, Gi-Ju ; Seo, Seong-Hoon ; Kim, Soo-Uck ;
Journal of Pharmaceutical Investigation, volume 19, issue 3, 1989, Pages 155~161
Coprecipitates of chlorpropamide (CPA)-sodium deoxycholate (DC-Na) were prepared at various ratios of CPA to the DC-Na. The X-ray diffraction and DSC measurements indicated that CPA in 1:1 and 1:3 w/w CPA-DC-Na coprecipitates did not exist in amorphous form, but the others were amorphous. The dissolution rate of CPA from the CPA-DC-Na coprecipitates increased in distilled water and KP V 2nd disintegration test fluid (pH 6.8), but decreased extremely in KP V 1st disintegration test fluid (pH 1.2). The dissolution rates of CPA-DC-Na coprecipitates were compared with those of CPA alone and CPA-DC-Na physical mixtures. Especially, it was found that the dissolution rate of CPA markedly increased in the case of 1:5 CPA-DC-Na coprecipitate. The concentration of CPA dissolved from CPA-DC-Na coprecipitate reached a plateau within 5-10 min, and thereafter gradually decreased, indicating that CPA released from the coprecipitate was recrystallized.
Drug-Biomacromolecule Interaction (XIII)-Effect of ionic Strength, pH and Temperature on Binding of Cephalothin to Bovine Serum Albumin-
Kim, Chong-Kook ; Lim, Yun-Su ; Yang, Ji-Sun ; Jeong, Eun-Ju ;
Journal of Pharmaceutical Investigation, volume 19, issue 3, 1989, Pages 163~171
To investigate the protein binding characteristics of cephalothin, the effects of ionic strength, pH and temperature on the binding of cephalothin to bovine serum albumin (BSA) were studied by UV difference spectrophotometric method. With increasing ionic strength at constant PH and temperature, association constant decreased, but the number of binding sites sites was about 2 constantly. It may be deduced that the binding process is not only due to electrostatic forces. And the increased association constant at high ionic strength is explained by conformational changes of BSA from complex to subunits. The pH effect on the affinity of interaction indicated that the binding affinity of drug is higher in the neutral region than in the alkaline region. And, at high pH value, the number of binding sites decreased from 2 to 1 because of the conformational changes of BSA in alkaline region. The decrease in binding affinity of BSA to drug with increasing temperature was characteristic of an exothermic reaction. And the negative sign of
meant that the binding process occurs spontaneously under the experimental conditions. In cephalothin-BSA complex formation, since the net enthalpy change value and entropy change value are positive, it is assumed that hydrophobic bindings are predominant in this binding process.