Effects of film coatings on tablet hardness.

abstract：:A comprehensive model is developed to describe the swelling/dissolution behaviors and drug release from hydrophilic matrices. The major thrust of this model is to employ an important physical property of the polymer, the polymer disentanglement concentration, rho p,dis, the polymer concentration below which polymer ch...

journal_title：Journal of pharmaceutical sciences

authors： Ju RT,Nixon PR,Patel MV,Tong DM

更新日期：1995-12-01 00:00:00

abstract：:Even though gelatin is the most widely used polymeric excipient in pharmaceutical products, scant attention has been paid to its interaction with small organic molecules. The present work deals with the interaction of gelatin and four monosulfonated or monocarboxylated azo dyes having hydrocarbon moieties of different...

journal_title：Journal of pharmaceutical sciences

authors： Gautam J,Schott H

更新日期：1994-07-01 00:00:00

abstract：:The intrinsic dissolution rate and solubility of carbamazepine was measured in aqueous solutions of sodium lauryl sulfate (SLS) prepared with two different grades of purity, 95 and 99%, and 95% SLS in 0.15 M NaCl to determine the effect of surface-active impurities and electrolytes. Four significant observations resul...

journal_title：Journal of pharmaceutical sciences

authors： Crison JR,Weiner ND,Amidon GL

更新日期：1997-03-01 00:00:00

abstract：:In this work, the production of dexametasone and dexametasone acetate microparticles is proposed using supercritical-assisted atomization (SAA). This process is based on the solubilization of supercritical carbon dioxide in a liquid solution containing the drug; then, the ternary mixture is sprayed through a nozzle an...

journal_title：Journal of pharmaceutical sciences

authors： Della Porta G,Ercolino SF,Parente L,Reverchon E

更新日期：2006-09-01 00:00:00

abstract：:This study describes a fast spectrophotometic titration method for apparent ionization constant (pKa) determination. In this method, a Universal pH indicator is utilized instead of the conventional pH electrode. An autoburette is set to add HCl at a constant rate to a vigorously stirred 1 cm UV cuvette which contains ...

journal_title：Journal of pharmaceutical sciences

authors： Kong X,Zhou T,Liu Z,Hider RC

更新日期：2007-10-01 00:00:00

abstract：:The hydrogen-bonded interactions of chloral hydrate and halide ions have been investigated conductometrically at 25.00 degrees C in aqueous solutions. In spite of the strong competing effect of water, the 1:1 associates have relatively high stability constants, in the order of chloride greater than bromide greater tha...

journal_title：Journal of pharmaceutical sciences

authors： Barcza L,Lenner L

更新日期：1988-07-01 00:00:00

abstract：:The solubility equation of Yalkowsky was used to estimate the aqueous solubility of 33 barbiturates in the temperature range of 5 to 45 degrees C. The equation was extended by adding a term which accounts for the effect of pH on the solubility of the drug. The extended equation is successful in estimating the aqueous ...

journal_title：Journal of pharmaceutical sciences

authors： Pinal R,Yalkowsky SH

更新日期：1987-01-01 00:00:00

abstract：:Packing behavior and flowability of particulate material have long been acknowledged as important parameters for the processing of pharmaceutical materials. When properly understood, these properties can provide insight into weight uniformity, tableting performance and process design. The aim of this study was to meas...

journal_title：Journal of pharmaceutical sciences

authors： Sandler N,Wilson D

更新日期：2010-02-01 00:00:00

abstract：:The intrinsic factor-mediated binding of cyanocobalamin to cholestyramine was studied in vitro under varying conditions of pH, added electrolyte, and bile salt. The intrinsic factor-cyanocobalamin complex was adsorbed strongly by the resin at pH 3 in the presence of neutral salt and low concentrations of glycocholic a...

journal_title：Journal of pharmaceutical sciences

authors： Andersen KJ,Schjønsby H

更新日期：1978-11-01 00:00:00

abstract：:Determining the aggregation propensity of protein-based biotherapeutics is an important step in the drug development process. Typically, a great deal of data collected over a large period of time is needed to estimate the aggregation propensity of biotherapeutics. Thus, candidates cannot be screened early on for aggre...

journal_title：Journal of pharmaceutical sciences

authors： Lauer TM,Agrawal NJ,Chennamsetty N,Egodage K,Helk B,Trout BL

更新日期：2012-01-01 00:00:00

abstract：:Approximately 30% of active pharmaceutical ingredients (APIs) experience agglomeration, granulation, and breakage during agitated drying. Currently, there is no small-scale bench tool to help assess and observe granulation behavior of APIs in the laboratory and subsequently lead to the development of a robust drying m...

journal_title：Journal of pharmaceutical sciences

authors： Zhang S,Lamberto DJ

更新日期：2014-01-01 00:00:00

abstract：:A revised classification system for oral drugs was developed using the biopharmaceutics classification system (BCS) as a starting point. The revised system is designed to have a greater focus on drug developability. Intestinal solubility, the compensatory nature of solubility and permeability in the small intestine an...

journal_title：Journal of pharmaceutical sciences

authors： Butler JM,Dressman JB

更新日期：2010-12-01 00:00:00

abstract：:The kinetic profile for the decomposition of ditiocarb sodium salt in aqueous solution was achieved with UV-visible absorption spectrometry. The kinetic profile indicates that the decomposition reaction is hydrogen ion-catalyzed over the entire 4-10 pH range and enables the determination of the value of the acid-base ...

journal_title：Journal of pharmaceutical sciences

authors： Martens T,Langevin-Bermond D,Fleury MB

更新日期：1993-04-01 00:00:00

abstract：:The solubility of a drug is ultimately governed by its chemical potential as it is present in the undissolved solute. For a pharmaceutical amorphous solid dispersion (ASD), its solubility depends on the state and composition of the undissolved solute when the ASD is equilibrated with water. Concerning the undissolved ...

journal_title：Journal of pharmaceutical sciences

authors： Huang S,Mao C,Williams RO 3rd,Yang CY

更新日期：2016-12-01 00:00:00

abstract：:Pyrimethamine, an antimalarial drug, was found to be able to inhibit both enzymes (DHFR-TS and PTR1) of the leishmanial folate pathway, although this effect in vivo appears only in relatively high concentrations. To reach the parasites inside macrophage cells, where they are sheltered, targeted drugs of pyrimethamine,...

journal_title：Journal of pharmaceutical sciences

authors： De Carvalho PB,Ramos DC,Cotrim PC,Ferreira EI

更新日期：2003-10-01 00:00:00

abstract：:Accurate prediction of target occupancy facilitates central nervous system drug development. In this review, we discuss the predictability of serotonin transporter (SERT) occupancy in human brain estimated from in vitro Ki values for human SERT and plasma concentrations of unbound drug (Cu,plasma), as well as the impa...

journal_title：Journal of pharmaceutical sciences

authors： Yahata M,Chiba K,Watanabe T,Sugiyama Y

更新日期：2017-09-01 00:00:00

abstract：:A method is presented for determining the equilibrium solubility of a drug in a solid polymer at or near room temperature, which represents a typical storage temperature. The method is based on a thermodynamic model to calculate the Gibbs energy change ΔG(SS) associated with forming a binary drug-polymer solid solutio...

journal_title：Journal of pharmaceutical sciences

authors： Bellantone RA,Patel P,Sandhu H,Choi DS,Singhal D,Chokshi H,Malick AW,Shah N

更新日期：2012-12-01 00:00:00

abstract：:Therapeutic use of anti-inflammatory steroids is limited due to their potential suppressive effects on pituitary-adrenal function and the immune system. Based on the antedrug concept, a new class of potent locally active compounds with reduced risk of side effects has been synthesized from prednisolone by introducing ...

journal_title：Journal of pharmaceutical sciences

authors： Heiman AS,Taraporewala IB,McLean HM,Hong D,Lee HJ

更新日期：1990-07-01 00:00:00

abstract：:Spectrophotometric assay for cycloserine based on the interaction of the drug with 9-methoxyacridine as a chromogenic agent is described. The highly colored substituted acridine product was identified as 9-(d-4-imino-3-isoxazolidinone)acridine. Color development was affected by time and temperature of heating and by t...

journal_title：Journal of pharmaceutical sciences

authors： Stewart JT,Yoo GS

更新日期：1988-05-01 00:00:00

abstract：:The viscosity and surface tension of systems containing small amounts of salicylic acid in aqueous solutions of cetrimide were determined. An abrupt increase in viscosity was observed, and the molar ratio of salicylic acid to certrimide at which this viscosity increase occurred was 1:2. The surface tension of these sy...

journal_title：Journal of pharmaceutical sciences

authors： Wan LS

更新日期：1977-12-01 00:00:00

abstract：:15-Lipoxygenase (15-LOX) is one of the key enzymes responsible for the formation of oxidized low-density lipoprotein, a major causal factor for atherosclerosis. Δ(9)-Tetrahydrocannabinol (Δ(9)-THC), a major component of marijuana, has suggested to suppress atherosclerosis. Although Δ(9)-THC seems to be attractive for ...

journal_title：Journal of pharmaceutical sciences

authors： Takeda S,Jiang R,Aramaki H,Imoto M,Toda A,Eyanagi R,Amamoto T,Yamamoto I,Watanabe K

更新日期：2011-03-01 00:00:00

abstract：:Glasses were prepared from a number of barbiturates. The viscosities and glass transition temperatures of the glasses were dependent on the structure of the groups present on the C-5 and N-1 atoms. Solid dispersions were prepared from three selected barbiturates formulated with citric acid. The glass transition temper...

journal_title：Journal of pharmaceutical sciences

authors： Summers MP

更新日期：1978-11-01 00:00:00

abstract：:An Amended Solvation Energy Relationship (ASER) was recently reported to successfully predict the aqueous solubilities of a set of 664 organic compounds. The average absolute error and root mean square error are 0.43 and 0.62 log units, respectively. When the General Solubility Equation (GSE) is applied to the same se...

journal_title：Journal of pharmaceutical sciences

authors： Yang G,Ran Y,Yalkowsky SH

更新日期：2002-02-01 00:00:00

abstract：:The neuroprotective blood-brain barrier (BBB) keeps many drug candidates below therapeutic levels in the central nervous system. Glutathione PEGylated liposomal doxorubicin (2B3-101) has been developed to safely enhance the delivery of doxorubicin to brain tumors. However, doxorubicin concentration in extracellular br...

journal_title：Journal of pharmaceutical sciences

authors： Birngruber T,Raml R,Gladdines W,Gatschelhofer C,Gander E,Ghosh A,Kroath T,Gaillard PJ,Pieber TR,Sinner F

更新日期：2014-07-01 00:00:00

abstract：:The cyclopropyl amine moiety in GSK2879552 (1) degrades hydrolytically in high pH conditions. This degradation pathway was observed during long-term stability studies and impacted the shelf life of the drug product. This article describes the work to identify the degradation impurities, elucidate the degradation mecha...

journal_title：Journal of pharmaceutical sciences

authors： Campbell JM,Lee M,Clawson J,Kennedy-Gabb S,Bethune S,Janiga A,Kindon L,Leach KP

更新日期：2019-09-01 00:00:00

abstract：:Cationic antimicrobial peptides are good candidates for new diagnostics and antimicrobial agents. They can rapidly kill a broad range of microbes and have additional activities that have impact on the quality and effectiveness of innate responses and inflammation. Furthermore, the challenge of bacterial resistance to ...

journal_title：Journal of pharmaceutical sciences

authors： Brouwer CP,Wulferink M,Welling MM

更新日期：2008-05-01 00:00:00

abstract：:Canrenone can be determined by high-speed liquid chromatography in pharmaceutical dosage forms without interference from common excipients or degradation products. This stability-indicating assay, using o-nitroaniline as the internal standard, is rapid and accurate. ...

journal_title：Journal of pharmaceutical sciences

authors： Williamson DE

更新日期：1976-01-01 00:00:00

abstract：:An equation was developed which enables blood level data to be utilized for determining whether or not the first-order absorption and elimination rate constants are equal in the one-compartment open model. This equation was tested using simulated data with excellent results. ...

journal_title：Journal of pharmaceutical sciences

authors： Macheras PE

更新日期：1985-05-01 00:00:00

abstract：:The stereoselective pharmacokinetics of suprofen enantiomers has been studied in humans by means of stable isotope-labeled pseudoracemate-diastereomer methodology. After a single oral dose of a near equimolar mixture of unlabeled-(R)-(-)- and [2H3]-(S)-(+)-suprofen [or unlabeled-(S)- and [2H3]-(R)-suprofen] to three h...

journal_title：Journal of pharmaceutical sciences

authors： Shinohara Y,Magara H,Baba S

更新日期：1991-11-01 00:00:00

abstract：:Amorphous dispersions provide an excellent way of increasing dissolution rates of poorly soluble drugs, but there may be concerns about stability. One way of assessing the stability of amorphous is the study of relaxation. In this study the relaxation at the surface of amorphous solid dispersions (SDs) was evaluated u...

journal_title：Journal of pharmaceutical sciences

authors： Hasegawa S,Ke P,Buckton G

更新日期：2009-06-01 00:00:00