Colorimetric acetaminophen determination in pharmaceutical formulations.

abstract：:The pharmacokinetics and tissue distribution of methotrexate (MTX) were investigated following intra-articular injection of either MTX solution or controlled release MTX loaded microspheres in healthy rabbit joints. MTX solution or MTX loaded microspheres (size 30-100 mum) (10 mg MTX) was injected into the right knee ...

journal_title：Journal of pharmaceutical sciences

authors： Liang LS,Wong W,Burt HM

更新日期：2005-06-01 00:00:00

abstract：:Pelrinone HCl is essentially nonhygroscopic. The pH-solubility profile exhibits a U-shaped curve, while the octanol-water partition coefficient-pH profile shows a bell-shaped curve. Two ionizable functions, with a pKa1 value of 4.71 and a pKa2 value of 8.94, produce the cationic and anionic forms, respectively. A weak...

journal_title：Journal of pharmaceutical sciences

authors： Hajdu J,Adams G,Lee HK

更新日期：1988-11-01 00:00:00

abstract：:Phenytoin has been decreasingly used because of the high interindividual variability in drug concentration and the narrow therapeutic window. Despite such drawbacks, phenytoin is still essential as a second-line therapy for status epilepticus when patients are resistant to benzodiazepines. This study aimed to develop ...

journal_title：Journal of pharmaceutical sciences

authors： Guk J,Lee SG,Chae D,Kim JH,Park K

更新日期：2019-08-01 00:00:00

abstract：:Hydrastine, canadine, and berberine were determined by the acid-dye technique. At pH 5.6, both the tertiary and the quaternary hydrastis alkaloids formed ion-pairs with bromcresol purple. The liberated hydrastine and canadine from the alkaloid-dye complexes were determined spectrophotometrically in the presence of ber...

journal_title：Journal of pharmaceutical sciences

authors： El-Masry S,Korany MA,Abou-Donia AH

更新日期：1980-05-01 00:00:00

abstract：:Microparticles are of considerable interest for drug delivery, vaccination and diagnostic imaging. In order to obtain microparticles with long circulation times, or to provide the prerequisite for tissue specific targeting through decoration with suitable ligands, their surfaces need to be modified such that they beco...

journal_title：Journal of pharmaceutical sciences

authors： Wattendorf U,Merkle HP

更新日期：2008-11-01 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

authors： Le HT,Jeon HM,Lim CW,Kim TW

更新日期：2014-10-01 00:00:00

abstract：:A GLC determination of cyclobenzaprine in human plasma and urine is described. After extraction from alkalinized samples with heptane-isopentyl alcohol (97:3), the drug and internal standard were back-extracted into 0.1 N HCl and then reextracted into ether. Use of a lower homolog of the drug as an internal standard w...

journal_title：Journal of pharmaceutical sciences

authors： Hucker HB,Stauffer SC

更新日期：1976-08-01 00:00:00

abstract：:High pressure liquid chromatography using reversed-phase and/or ion-pair techniques was used to optimize resolution of aspirin-containing muscle relaxant mixtures as well as other therapeutic agents commonly found in muscle relaxant-analgesic mixtures. The compounds were chromatographed on an octadecylsilane column us...

journal_title：Journal of pharmaceutical sciences

authors： Stewart JT,Honigberg IL,Coldren JW

更新日期：1979-01-01 00:00:00

abstract：:Regional permeability coefficients of 19 drugs with different physicochemical properties were determined using excised segments from three regions of rat intestine: jejunum, ileum, and colon. The results are discussed in relation to the characteristics of the drug, i.e., MW (range 113-1071 Da), pKa, log D (octanol/wat...

journal_title：Journal of pharmaceutical sciences

authors： Ungell AL,Nylander S,Bergstrand S,Sjöberg A,Lennernäs H

更新日期：1998-03-01 00:00:00

abstract：:New methods are being applied to distinguish silicone oil droplets from subvisible particles in therapeutic protein formulations. The need to standardize these methods and compare them to established methods is critical to increase the understanding of the risks from protein aggregation and other subvisible particulat...

journal_title：Journal of pharmaceutical sciences

authors： Vandesteeg N,Kilbert C

更新日期：2013-06-01 00:00:00

abstract：:Comparability studies used to assess a proposed manufacturing change for a biological product include sensitive analytical studies to confirm there are no significant differences in structural or functional attributes that may contribute to clinically meaningful changes in efficacy or safety. When a proposed change is...

journal_title：Journal of pharmaceutical sciences

authors： Grampp G,McElroy PL,Camblin G,Pollock A

更新日期：2018-06-01 00:00:00

abstract：:The adsorption of cimetidine on selected pharmaceuticals including kaolin, activated charcoal, talc, and nonsystemic antacids was determined at pH 5.0 and 25 degrees. The Langmuir and Freundlich adsorption isotherms showed that cimetidine adsorption was significant with activated charcoal, kaolin, talc, and magnesium ...

journal_title：Journal of pharmaceutical sciences

authors： Ganjian F,Cutie AJ,Jochsberger T

更新日期：1980-03-01 00:00:00

abstract：:Dendrimers have emerged as a promising drug delivery system due to their well defined size, tailorability, and multifunctional nature. However, their application in brain delivery is relatively a new area of research. The present study was aimed at evaluating the uptake and permeation of polyether-copolyester (PEPE) d...

journal_title：Journal of pharmaceutical sciences

authors： Dhanikula RS,Hammady T,Hildgen P

更新日期：2009-10-01 00:00:00

abstract：:Specifically tailored amino acid-based formulations were previously shown to have a high potential to avoid stress-mediated degradation of complex molecules such as monoclonal antibodies and viral vectors. By using adenovirus 5 (Ad5) as a model, we studied whether such formulations may also efficiently protect viral v...

journal_title：Journal of pharmaceutical sciences

authors： Reinauer EB,Grosso SS,Henz SR,Rabas JA,Rodenstein C,Altrichter J,Scholz M,Kemter KF

更新日期：2020-01-01 00:00:00

abstract：:A kinetic dialysis technique together with a radiolabeled chenodeoxycholate (CDC) was used to determine the existence of a relationship between the monomer concentration of CDC and the total CDC concentration in different CDC solutions containing 1 or 5 mM sulfobutylether (SBE)-β-cyclodextrin. On the basis of the natu...

journal_title：Journal of pharmaceutical sciences

authors： Liu CL,Chang CL,Jhou SY,Higuchi WI

更新日期：2012-08-01 00:00:00

abstract：:Pharmacokinetic profiles of pentylenetetrazol in the dog were studied following rapid intravenous and oral administrations of a convulsant dose (15-20 mg/kg). Plasma level-time curves after a rapid intravenous injection showed biexponential decline, indicating that the disposition of this drug in the dog follows a two...

journal_title：Journal of pharmaceutical sciences

authors： Jun HW

更新日期：1976-07-01 00:00:00

abstract：:The quantitative determinations of phenol in phenolated calamine lotion USP and of phenol and resorcinol in phenol-resorcinol-boric acid solution by high-pressure liquid chromatography are reported. The procedures are simple, rapid (no special preliminary treatment is required), and accurate. There is no interference ...

journal_title：Journal of pharmaceutical sciences

authors： Das Gupta V

更新日期：1976-11-01 00:00:00

abstract：:Exposure of 4-methoxy-2-(3-phenyl-2-propynyl)phenol (CO/1828) to air and light (accelerated by temperature) yields 1-(2-hydroxy-5- methoxyphenyl)-3-phenylpropynone as the major degradation product. With extraction, this product rapidly degrades to 5-methoxyaurone and 6-methoxyflavone. In addition, a mixture of dimeric...

journal_title：Journal of pharmaceutical sciences

authors： Schiavi M,Serafini S,Italia A,Villa M,Fronza G,Selva A

更新日期：1992-08-01 00:00:00

abstract：:A fully automated system for dissolution rate analysis of potassium in slow release tablets is described. Aliquots are removed after 1, 2, and 4 hr from six samples, and potassium is analyzed in a flame photometer at 768 nm. A complete study of six samples takes 5.5 hr. The system may be run overnight. During the time...

journal_title：Journal of pharmaceutical sciences

authors： Engdahl A,Karlberg B,Thelander S

更新日期：1976-03-01 00:00:00

abstract：:Papers and patents that deal with polymorphism (crystal systems for which a substance can exist in structures characterized by different unit cells, but where each of the forms has exactly the same elemental composition) and solvatomorphism (systems where the crystal structures of the substance are defined by differen...

journal_title：Journal of pharmaceutical sciences

authors： Brittain HG

更新日期：2009-05-01 00:00:00

abstract：:Pharmaceutical scientists are often asked to assess the impact of modifications to the illumination in the manufacturing and product packaging environment on product quality. To assess the impact of switching light sources, four model compounds were exposed to standard fluorescent light, LED, and "yellow light" and th...

journal_title：Journal of pharmaceutical sciences

authors： Wasylaschuk W,Pierce B,Geng X,Socia A,Kim D,Wuelfing WP,Abend A

更新日期：2020-11-01 00:00:00

abstract：:Adsorption of proteins to solid-fluid interfaces is often empirically found to promote formation of soluble aggregates and larger, subvisible, and visible particles, but key stages in this process are often difficult to probe directly. Aggregation mediated by adsorption to water-silicon oxide (SiOx) interfaces, akin t...

journal_title：Journal of pharmaceutical sciences

authors： Perevozchikova T,Nanda H,Nesta DP,Roberts CJ

更新日期：2015-06-01 00:00:00

abstract：:A novel approach using a self-setting hydroxyapatite (HAP) cement as a skeletal drug-delivery system has been proposed to solve the problem of delivering drugs to skeletal tissue at sufficiently high local concentrations for desirable therapeutic effects. HAP cements loaded with antibiotics can be formed in situ and c...

journal_title：Journal of pharmaceutical sciences

authors： Yu D,Wong J,Matsuda Y,Fox JL,Higuchi WI,Otsuka M

更新日期：1992-06-01 00:00:00

abstract：:The dependency of metformin in vivo disposition on the rate and extent of dissolution was studied. The analysis includes the use of fundamental principles of drug input, permeability, and intestinal transit time within the framework of a compartmental absorption transit model to predict key pharmacokinetic (PK) parame...

journal_title：Journal of pharmaceutical sciences

authors： Crison JR,Timmins P,Keung A,Upreti VV,Boulton DW,Scheer BJ

更新日期：2012-05-01 00:00:00

abstract：:The in vitro uptake study was performed using the isolated cells of human oral mucosa, buccal and the dorsum of the tongue, to investigate the mechanisms of glucose uptake. The uptake of D-glucose was much larger in cells of the dorsum of the tongue than in buccal cells and was inhibited more extensively by 2-deoxy-D-...

journal_title：Journal of pharmaceutical sciences

authors： Oyama Y,Yamano H,Ohkuma A,Ogawara K,Higaki K,Kimura T

更新日期：1999-08-01 00:00:00

abstract：:This study aimed to investigate the surface energy factors behind improved aerosolization performance of spray-dried colistin powder formulations compared with those produced by jet milling. Inhalable colistin powder formulations were produced by jet milling or spray drying (with or without l-leucine). Scanning electr...

journal_title：Journal of pharmaceutical sciences

authors： Jong T,Li J,Morton DA,Zhou QT,Larson I

更新日期：2016-03-01 00:00:00

abstract：:Application of ultrasound enhances transdermal transport of drugs (sonophoresis). The enhancement may result from enhanced diffusion due to ultrasound-induced skin alteration and/or from forced convection. To understand the relative roles played by these two mechanisms in low-frequency sonophoresis (LFS, 20 kHz), a th...

journal_title：Journal of pharmaceutical sciences

authors： Tang H,Mitragotri S,Blankschtein D,Langer R

更新日期：2001-05-01 00:00:00

abstract：:A GLC method for the determination of valproic acid and ethosuximide in plasma was developed. The procedure involved a single solvent extraction of drugs from acidified plasma samples, followed by a GLC injection of the unconcentrated organic phase. This rapid, sensitive, specific, and reproducible method has been use...

journal_title：Journal of pharmaceutical sciences

authors： Riva R,Albani F,Baruzzi A

更新日期：1982-01-01 00:00:00

abstract：:Paclitaxel and other taxanes have complex structures including the presence of numerous hydrolytically sensitive ester groups and a chiral center that readily undergoes epimerization thus making their kinetics complex. The present study attempts to understand the mechanism of epimerization at the 7-position of paclita...

journal_title：Journal of pharmaceutical sciences

authors： Tian J,Stella VJ

更新日期：2008-03-01 00:00:00

abstract：:This paper describes the synthesis and characterization of cationic copolymers with different macromolecular architecture and drug delivery properties of the corresponding dexamethasone sodium phosphate (DSP)-loaded systems. Copolyelectrolytes comprising poly[2-(acryloyloxy)ethyl] trimethylammonium chloride (PAETMAC) ...

journal_title：Journal of pharmaceutical sciences

authors： Georgieva D,Kostova B,Ivanova S,Rachev D,Tzankova V,Kondeva-Burdina M,Christova D

更新日期：2014-08-01 00:00:00