Abstract：
:The previous paper in this series introduced an X-ray diffraction quantitation method for the polymorphic content in tablets made of pure components. Before the method could be transferred, further studies were required to explain the commonly observed X-ray intensity variation in analyzing compacts. The literature typically attributes the variation to partial amorphization under compression and/or to preferred orientation, without much viable explanation or compelling evidence. In this study, changes in intensity in compacts analyzed in transmission geometry were found to be primarily a function of sample thickness and solid fraction. A theoretical model was developed to describe the X-ray powder diffraction (XRPD) intensity as a function of solid fraction, mass absorption coefficient, and thickness. The model was tested on two sets of glycine compacts: one with varying thickness at constant solid fraction, and the other with various solid fractions at a given thickness. The results show that the model predicts the XRPD intensity at any given sample thickness and solid fraction. With this model, the intensity variation of compacts made under different compression conditions can be normalized, making the method transferable to various tablet geometries and facilitating the analysis over expected ranges of formulation and process variation.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Cao W,Mullarney MP,Hancock BC,Bates S,Morris KRdoi
10.1002/jps.10480subject
Has Abstractpub_date
2003-12-01 00:00:00pages
2345-53issue
12eissn
0022-3549issn
1520-6017pii
S0022-3549(16)31369-7journal_volume
92pub_type
杂志文章abstract：:Hard gelatin capsule (HGC) shells are widely used to encapsulate drugs for oral delivery but are vulnerable to gelatin cross-linking, which can lead to slower and more variable in vitro dissolution rates. Adding proteolytic enzymes to the dissolution medium can attenuate these problems, but this complicates dissolutio...
journal_title：Journal of pharmaceutical sciences
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abstract：:In this study, curcumin and/or docosahexaenoic acid (DHA) were encapsulated in Thai silk fibroin/gelatin (SF/G) sponges, prepared at different blending ratios, aimed to be applied as a controlled release system for localized cancer therapy. The SF/G sponges were fabricated by freeze-drying and glutaraldehyde cross-lin...
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abstract：:Ascorbic acid (100 mg/ml) and sodium bisulfite (0.5 and 20 mg/ml) prevented more than 10% oxidation of apomorphine hydrochloride in water maintained at room temperature over 1-3 days. Refrigeration at 5 degrees prevented oxidation of apomorphine hydrochloride in aqueous solutions for 1 week. Neither ascorbic acid nor ...
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doi：10.1002/jps.2600690830
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abstract：:Two new methods for the simultaneous determination of chloroquine and its two main metabolites (monodesethylchloroquine and bisdesethylchloroquine) in biological samples, radioimmunoassay (RIA) and enzyme-linked immunosorbent assay (ELISA), are described. Antiserum is produced in rabbits immunized with N-(2-carboxyeth...
journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.2600790107
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abstract：:We present a systematic evaluation of the Wajima superpositioning method to estimate the human intravenous (i.v.) pharmacokinetic (PK) profile based on a set of 54 marketed drugs with diverse structure and range of physicochemical properties. We illustrate the use of average of "best methods" for the prediction of cle...
journal_title：Journal of pharmaceutical sciences
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doi：10.1016/S0022-3549(15)00174-4
更新日期：2016-03-01 00:00:00
abstract：:Experimental sulfadiazine tablets prepared by direct compression, using a commercially available direct compression tablet mass, were compared with experimental sulfadiazine tablets prepared by fluidized-bed granulation and commercially available sulfadiazine tablets USP. The values for friability and the time require...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600661023
更新日期：1977-10-01 00:00:00
abstract：:This investigation was designed to quantitate and compare in the rat the oral absorption characteristics of micronized griseofulvin from a corn oil-in-water emulsion dosage form containing suspended drug and a control aqueous suspension after single-dose (50 mg/kg) and multiple-dose (50 mg/kg every 12 hr for five dose...
journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.2600640910
更新日期：1975-09-01 00:00:00
abstract：:The aim of the study was to determine and compare the degree of swelling and the swelling kinetics of poly(ethylene oxide) (PEO) hydrophilic matrix tablets without any additives for matrixes with different molecular weight polydispersities. A wide range of "mixed" polydisperse PEO tablets were obtained by mixing two P...
journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.21892
更新日期：2010-03-01 00:00:00
abstract：:A pharmacokinetic study of the dopamine D2 receptor agonist (S)-(-)-2-(N-propyl-N-(2-thienylethyl)amino)-5-hydroxytetralin+ ++-HCl (N-0923) infused in female cynomolgus monkeys over a 4-h period was carried out at International Research and Development Corporation. The purpose of this study was to estimate the elimina...
journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.2600830533
更新日期：1994-05-01 00:00:00
abstract：:The solubility of a series of compounds was determined in a wide polarity spectrum of normal aliphatic alcohols over a limited temperature range. The solutes chosen were the methyl through n-butyl p-hydroxybenzoates, several of these being useful preservatives. Solubility profiles were determined for these compounds, ...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600660110
更新日期：1977-01-01 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
pub_type： 杂志文章,评审
doi：10.1002/jps.21034
更新日期：2008-05-01 00:00:00
abstract：:The crystallization tendency of 2 crystalline polymorphs of indomethacin (Iα, Iγ) in the undercooled melt has been investigated using molecular dynamics simulations. The main thermodynamical and dynamical physical parameters involved in the nucleation and growth processes have been determined. A careful attention has ...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2019.10.054
更新日期：2020-02-01 00:00:00
abstract：:A high-pressure liquid chromatographic method for the sensitive, rapid, and specific determination of sulfapyridine and its N-acetyl derivative in plasma and saliva was developed. A cyano-bonded, reversed-phase, high efficiency column was used. The system detected these sulfonamides in serum to 0.25 mg/liter and withi...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600670916
更新日期：1978-09-01 00:00:00
abstract：:The present study pursued to profile the intestinal solubility of nine HIV protease inhibitors (PIs) in fasted- and fed-state human intestinal fluids (FaHIF, FeHIF) aspirated from four volunteers. In addition, the ability of fasted- and fed-state simulated intestinal fluids (FaSSIF, FeSSIF) to predict the intestinal s...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.23698
更新日期：2013-10-01 00:00:00
abstract：:Two novel series of benzimidazole derivatives bearing structural modifications of certain drugs were prepared for evaluation for potential anticancer activity. The first series was a group of alkylating agents, and the second series was a variety of 4-substituted-1-thioacetyl-3-thiosemicarbazides. The tests of some re...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600691130
更新日期：1980-11-01 00:00:00
abstract：:A spectrophotofluorometric method is described for the quantitative analysis of coumarin, umbelliferone, and mixtures thereof in whole blood. The two drugs were selectively isolated from blood by solvent extraction. Analysis of the isolated coumarin was based on the measurement of the fluorophore at activation and emi...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600650104
更新日期：1976-01-01 00:00:00
abstract：:A stability-specific high-pressure liquid chromatographic (HPLC) method was developed to assay intact chlorambucil (I) in the presence of its hydrolytic decomposition products. The HPLC method was used to follow the degradation kinetics of I over pH 1.0-10.0 in the presence of various buffers with and without added ch...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600710113
更新日期：1982-01-01 00:00:00
abstract：:The particle sizing performance of a Next Generation Pharmaceutical Impactor (NGI) was compared to that of an Andersen cascade impactor (ACI). A single lot of Vanceril MDIs containing beclomethasone dipropionate (BDP) was used throughout. MDIs were sampled into NGI and ACI in accordance with USP recommendations, at 30...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.20091
更新日期：2004-07-01 00:00:00
abstract：:The fungal microorganism Cunninghamella echinulata was utilized to para-hydroxylate the synthetic substrate (+/-)-1-isopropylamino-3-phenoxy-propan-2-ol (1). The resulting product, (+/-)-1-(4-hydroxyphenoxy)-3-isopropylamino-propan-2-ol, or (+/-)-prenalterol, (2) was formed in greater than 85% yield. Extracts from inc...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600760220
更新日期：1987-02-01 00:00:00
abstract：:Anthrax remains a serious threat worldwide as a bioterror agent. A second-generation anthrax vaccine currently under clinical evaluation consists of a recombinant Protective Antigen (rPA) of Bacillus anthracis. We have previously demonstrated that complete protection against inhalational anthrax can be achieved in a r...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.20484
更新日期：2006-01-01 00:00:00
abstract：:To explore the possibility of cyclodextrin click clusters (CCCs) as a new cyclodextrin-based excipient, we prepared three different CCCs; heptakis{6-(4-hydroxymethyl-1H-[1,2,3]triazol-1-yl)-6-deoxy}-β-cyclodextrin (HT-β-CD), heptakis{6-(4-hydroxymethyl-1H-[1,2,3]triazol-1-yl)-6-deoxy}{2,3-di-O-methyl}-β-cyclodextrin (...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.24107
更新日期：2014-10-01 00:00:00
abstract：:Carbamazepine is the first-line anti-epileptic drug for focal seizures and generalized tonic-clonic seizures. Although sustained-release formulations exist, an initial burst of drug release is still present and this results in side effects. Zero-order release formulations reduce fluctuations in serum drug concentratio...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2016.04.031
更新日期：2016-07-01 00:00:00
abstract：:The majority of gene therapy clinical trials use plasmid DNA that is susceptible to shear-induced degradation. Many processing steps in the extraction, purification, and preparation of plasmid-based therapeutics can impart significant shear stress that can fracture the phosphodiester backbone of polynucleotides, and r...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章,评审
doi：10.1002/jps.10140
更新日期：2002-07-01 00:00:00
abstract：:The peptide hormone calcitonin (CT) is a potent drug for the therapy of different bone diseases. Salmon CT (sCT) is reported to be more active than human CT (hCT). Human CT, but not sCT, has a strong tendency to aggregate and fibrillate in aqueous solutions. Recent investigations of the fibrillation mechanisms contrib...
journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.2600840610
更新日期：1995-06-01 00:00:00
abstract：:Understanding the coating unit operation is imperative to improve product quality and reduce output risks for coated solid dosage forms. Three batches of sustained-release tablets coated with the same process parameters (pan speed, spray rate, etc.) were subjected to terahertz pulsed imaging (TPI) analysis followed by...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.21766
更新日期：2009-12-01 00:00:00
abstract：:Adsorption isotherms for the diazepam-activated carbon system in simulated intestinal fluid (SIF), without pancreatin, and in SIF with different percentages of ethanol were determined as were the solubilities of diazepam in SIF and in SIF with different percentages of ethanol. The surface area of the activated carbon ...
journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.10454
更新日期：2003-10-01 00:00:00
abstract：:Formulation pH has been reported to be responsible for the incidence of phlebitis. In this study, the effect of pH on injection phlebitis is investigated. Buffers of varying pHs were examined for their ability to produce phlebitis in rabbits. Thermal measurements as well as visual evaluations were used for phlebitis q...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600840427
更新日期：1995-04-01 00:00:00
abstract：:Alginate microparticles incorporating hydrocortisone hemisuccinate were produced by aerosolization and homogenization methods to investigate their potential for colonic drug delivery. Microparticle stabilization was achieved by CaCl2 crosslinking solution (0.5 M and 1 M), and drug loading was accomplished by diffusion...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2016.08.015
更新日期：2017-01-01 00:00:00
abstract：:An HPLC method for the simultaneous determination of safrole (S), dihydrosafrole (DHS), and chloromethyldihydrosafrole (CM-DHS) in piperonyl butoxide, with fluorimetric detection and elution gradient, is described. Samples with internal standard (piperonyl isobutyrate) are adsorbed on silica cartridges, then eluted wi...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600820812
更新日期：1993-08-01 00:00:00
abstract：:To reduce the risk of immunogenicity that may be caused by therapeutic protein products, it is important to properly characterize subvisible particles and to develop strategies to reduce the levels of particles delivered to patients. In the present study, by using state-of-the-art methods to quantify particle levels, ...
journal_title：Journal of pharmaceutical sciences
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doi：10.1016/j.xphs.2018.08.022
更新日期：2019-01-01 00:00:00
