Liquid chromatographic determination of 9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a]pyrimidin-4-one in human plasma with fluorescence detection.

abstract：:A colorimetric determination of chlorhexidine is described. The method is based on the formation of a yellow complex between the drug and bromcresol green. The absorption peak of this complex, extracted by chloroform, is at 410 nm, and linear response is obtained from 2.5 to 30 micrograms of chlorhexidine/ml. The accu...

journal_title：Journal of pharmaceutical sciences

authors： Andermann G,Buhler MO,Erhart M

更新日期：1980-02-01 00:00:00

abstract：:Human papillomavirus (HPV) virus-like-particles (VLPs) produced by recombinant expression systems are promising vaccine candidates for prevention of cervical cancers as well as genital warts. At high protein concentrations, HPV VLPs, comprised of the viral capsid protein L1 and expressed and purified from yeast, are p...

journal_title：Journal of pharmaceutical sciences

authors： Shi L,Sanyal G,Ni A,Luo Z,Doshna S,Wang B,Graham TL,Wang N,Volkin DB

更新日期：2005-07-01 00:00:00

abstract：:Iontophoretic transdermal delivery of sumatriptan was investigated in vitro. Among the conditions tested, 0.25 mA/cm2 and low ionic strength (NaCl 25 mM) was the best experimental condition to increase its transport across the skin. The flux increased 385-fold respective to passive diffusion, thus resulting in a trans...

journal_title：Journal of pharmaceutical sciences

authors： Femenía-Font A,Balaguer-Fernández C,Merino V,López-Castellano A

更新日期：2005-10-01 00:00:00

abstract：:Apparent acidity constants obtained for various benzothiadiazine diuretics by semiaqueous potentiometric titrations gave satisfactory agreement with many values obtained by aqueous potentiometry. One suitable method for determining the acidity constants of sparingly soluble drugs, the solubility variation with pH tech...

journal_title：Journal of pharmaceutical sciences

authors： Hennig UG,Moskalyk RE,Chatten LG,Chan SF

更新日期：1981-03-01 00:00:00

abstract：:Various complex mechanisms and their multifactorial pathways decisively provoke low-grade local and systemic inflammation in β-cells of pancreatic islets and peripheral tissues to induce β-cells' dysfunction and apoptosis, insulin resistance, and ultimately, overt type 2 diabetes mellitus (T2DM). Conventional antidiab...

journal_title：Journal of pharmaceutical sciences

authors： Akash MS,Shen Q,Rehman K,Chen S

更新日期：2012-05-01 00:00:00

abstract：:The expression of carboxylesterase (CES) and the transdermal movement of an ester prodrug were studied in rat skin. Ethyl-fexofenadine (ethyl-FXD) was used as a model lipophilic prodrug that is slowly hydrolyzed to its parent drug, FXD (MW 502). Among the CES1 and CES2 isozymes, Hydrolase A is predominant in rat skin ...

journal_title：Journal of pharmaceutical sciences

authors： Imai T,Ariyoshi S,Ohura K,Sawada T,Nakada Y

更新日期：2016-02-01 00:00:00

abstract：:The objective of this study was to determine the primary formulation properties that affect the dissolution rate of poorly soluble nondisintegrating drugs. This work focused on compression of orally administered acidic drugs with ionizable buffers. Naproxen was used as the poorly soluble model drug, and calcium salts ...

journal_title：Journal of pharmaceutical sciences

authors： Chakrabarti S,Southard MZ

更新日期：1997-04-01 00:00:00

abstract：:Methadyl acetate was metabolized by microsomal preparations of rat liver to yield nor-methadyl acetate and 6-(dimethylamino)-4,4-diphenyl-3-heptanol. The identification and separation of these three compounds was established by TLC, using iodoplatinate spray as a visualizing agent. ...

journal_title：Journal of pharmaceutical sciences

authors： Kochhar MM,Hamrick ME,Bavda LT

更新日期：1976-01-01 00:00:00

abstract：:We report a semiquantitative method for determining trace amounts (<1%) of thermodynamically stable forms in polymorphic mixtures, focusing on sample preparation effects on solid phase transitions. Tegafur [5-fluoro-1-(oxolan-2-yl)-1,2,3,4-tetrahydropyrimidine-2,4-dione] was used as a model material in this study. The...

journal_title：Journal of pharmaceutical sciences

authors： Bobrovs R,Actiņš A

更新日期：2012-12-01 00:00:00

abstract：:In this study, injectable microspheres were developed for the local treatment of joint degeneration in rheumatoid arthritis (RA). Microspheres loaded with triamcinolone (TA), a corticosteroid drug, and/or raloxifene (Ral), a cartilage regenerative drug, were prepared with a biodegradable and biocompatible polymer, pol...

journal_title：Journal of pharmaceutical sciences

authors： Ocal Y,Kurum B,Karahan S,Tezcaner A,Ozen S,Keskin D

更新日期：2014-08-01 00:00:00

abstract：:Two multisample laboratory powder diffractometers have been evaluated for the purpose of pattern indexing in the context of physical form screening. Both diffractometers utilise foil transmission geometry, primary monochromated radiation, and a position-sensitive detector. Data collected from six compounds (sotalol hy...

journal_title：Journal of pharmaceutical sciences

authors： Florence AJ,Baumgartner B,Weston C,Shankland N,Kennedy AR,Shankland K,David WI

更新日期：2003-09-01 00:00:00

abstract：:The poor membrane permeability and oral bioavailability of the iron chelating agent deferoxamine (DFO) mesylate result from the low octanol/water partition coefficient and high aqueous solubility. With the ultimate aim to improve biomembrane permeability while retaining the iron-binding ability of DFO, a series of mor...

journal_title：Journal of pharmaceutical sciences

authors： Ihnat PM,Vennerstrom JL,Robinson DH

更新日期：2000-12-01 00:00:00

abstract：:Robust higher order structure (HOS) characterization capability and strategy are critical throughout biopharmaceutical development from initial candidate selection and formulation screening to process optimization and manufacturing. This case study describes the utility of several orthogonal HOS methods as investigati...

journal_title：Journal of pharmaceutical sciences

authors： Budyak IL,Doyle BL,Weiss WF 4th

更新日期：2015-04-01 00:00:00

abstract：:Contraceptive natural steroids, such as progesterone and estradiol, are ineffective when administered orally because of extensive metabolism in the gastrointestinal (GI) tract during absorption and first-pass metabolism. Consequently, highly potent and potentially harmful synthetic steroids are now being used in oral...

journal_title：Journal of pharmaceutical sciences

authors： Hussain AA,Hirai S,Bawarshi R

更新日期：1981-04-01 00:00:00

abstract：:Surface adsorption of two monoclonal antibodies (mAb1 and mAb2), with widely different hydrophobicity and self-association behavior in solution, was examined by quartz crystal microbalance with dissipation monitoring to understand how adsorption and protein self-interactions near the surface are impacted by their intr...

journal_title：Journal of pharmaceutical sciences

authors： Oom A,Poggi M,Wikström J,Sukumar M

更新日期：2012-02-01 00:00:00

abstract：:An analysis of the disintegration-dissolution sequence of drug release from a tablet leads to a mathematical expression relating disintegration to the dissolution profile of the tablet and the dissolution rate of the primary drug particles in the tablet. The equation describing the disintegration of an acetaminophen t...

journal_title：Journal of pharmaceutical sciences

authors： Nelson KG,Wang LY

更新日期：1978-01-01 00:00:00

abstract：:In 2005, the World Health Organization (WHO) proposed that provided an active pharmaceutical ingredient could meet certain criteria, bioequivalence could be evaluated with a set of laboratory tests, obviating the need for expensive and time-consuming pharmacokinetic studies in humans. The aim of this work was to deter...

journal_title：Journal of pharmaceutical sciences

authors： Strauch S,Jantratid E,Stahl M,Rägo L,Dressman JB

更新日期：2011-03-01 00:00:00

abstract：:The pathogenic bacterium Staphylococcus aureus can penetrate host cells. However, intracellular S. aureus is not considered during antimicrobial agent selection in clinical chemotherapy because of the lack of information about drug transportability into cells in vivo. We focused on agents used to treat methicillin-res...

journal_title：Journal of pharmaceutical sciences

authors： Kobuchi S,Kita Y,Hiramatsu Y,Sasaki K,Uno T,Ito Y,Sakaeda T

更新日期：2021-02-01 00:00:00

abstract：:In pharmaceutical development alternative drug delivery modalities are being increasingly employed. One example is an implant, which achieves gradual drug release in patients over a period of many months or years. Due to the complexity of these long-acting formulations, advanced physical characterization methods are d...

journal_title：Journal of pharmaceutical sciences

authors： Skomski D,Liu Z,Su Y,John CT,Doty A,Forster SP,Teller R,Barrett SE,Xu W

更新日期：2020-09-01 00:00:00

abstract：:To study the effect of substituents on the antitumor activities of analogs of 1-phenyl-3-benzyl-3-methyltriazenes, a series of compounds was designed and synthesized in which the substituent on the 1-phenyl was an electron-withdrawing group and the substituent on the 3-benzyl had a broad range of physicochemical prope...

journal_title：Journal of pharmaceutical sciences

authors： Dunn WJ 3rd,Greenberg MJ

更新日期：1977-10-01 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：:This work investigates the use of spray freeze-drying (SFD) to produce protein loaded particles suitable for epidermal delivery. In the first part of the study, the effects of formulation and process conditions on particle properties are examined. Aqueous solutions of trehalose produce SFD particles in the size range ...

journal_title：Journal of pharmaceutical sciences

authors： Sonner C,Maa YF,Lee G

更新日期：2002-10-01 00:00:00

abstract：:Health authorities require that suitable stability of the drug substance be shown in relevant materials of construction. ICH Q1A(R2) explicitly states that "stability studies should be conducted on drug substance packaged in a container closure system that is the same as or simulates the packaging proposed for storage...

journal_title：Journal of pharmaceutical sciences

authors： Klair N,Kim MT,Lee A,Xiao NJ,Patel AR

更新日期：2020-10-07 00:00:00

abstract：:(+-)-Carbovir [(+-)-9-[4 alpha-(hydroxymethyl)-cyclopent-2-ene-1 alpha-yl]guanine; NSC 614846] is a novel carbocyclic nucleoside analogue which has been shown to be a potent and selective inhibitor of HIV in vitro. As part of an effort to develop a parenteral formulation for subsequent clinical and toxicological evalu...

journal_title：Journal of pharmaceutical sciences

authors： Anderson BD,Chiang CY

更新日期：1990-09-01 00:00:00

abstract：:A series of mono-, di-, and trimethylated derivatives of 4-chloro- and 4-methoxybenzanilide was synthesized and evaluated for anticonvulsant activity. This series was prepared in the course of studies designed to examine the relationship between anticonvulsant effects and benzamide structure. The compounds were tested...

journal_title：Journal of pharmaceutical sciences

authors： Clark CR,McMillian CL

更新日期：1990-03-01 00:00:00

abstract：:The germacranolide sesquiterpene lactones costunolide, parthenolide, and costunolide diepoxide were isolated from the leaves of Magnolia grandiflora L. Costunolide diepoxide might be, at least in part, an artifact derived from air oxidation of parthenolide. The root bark yielded only costunolide together with the two ...

journal_title：Journal of pharmaceutical sciences

authors： el-Feraly FS,Chan YM

更新日期：1978-03-01 00:00:00

abstract：:The aim was to study a new method of dissolution in vitro, the "Bio-Dis" apparatus, and to compare it with the classical rotating bottle method. Several theophylline controlled-release drug dosage forms were studied. Dissolution testing was performed in increasing pH in standard conditions and after treatment with pea...

journal_title：Journal of pharmaceutical sciences

authors： Esbelin B,Beyssac E,Aiache JM,Shiu GK,Skelly JP

更新日期：1991-10-01 00:00:00

abstract：:The physicochemical properties of ricobendazole (RBZ) were characterized using conventional methods. Solubility in some pharmaceutical solvents, pH-solubility, ionization properties, and lipophilicity are described. The solubility of RBZ in water is 62 mug/mL and very poor in common pharmaceutical solvents, for exampl...

journal_title：Journal of pharmaceutical sciences

authors： Wu Z,Razzak M,Tucker IG,Medlicott NJ

更新日期：2005-05-01 00:00:00

abstract：:A potentiometric study of lithium complexation with tyramine, dopamine, norepinephrine, and 5-hydroxytryptamine was undertaken using monovalent cationic selective and pH glass electrodes. The conditional stability constants for the lithium catecholamine complexes were calculated for a range of pH values from direct po...

journal_title：Journal of pharmaceutical sciences

authors： Sandmann BJ,Luk HT

更新日期：1986-01-01 00:00:00

abstract：:Midazolam (MDZ) is a benzodiazepine commonly administered in preanesthesia of children by oral or by sublingual routes. To mask its bitter taste and enhance its aqueous solubility, we already developed a 0.2% (w/v) MDZ oral solution containing γ-cyclodextrin (γ-CD), which proves to be better accepted by children in pe...

journal_title：Journal of pharmaceutical sciences

authors： Mathiron D,Marçon F,Dubaele JM,Cailleu D,Pilard S,Djedaïni-Pilard F

更新日期：2013-07-01 00:00:00