Abstract：
:The adsorption of quinidine onto kaolin was studied as a function of pH in aqueous solutions in which the ionic strength was adjusted to 0.1. The interaction of quinidine with pectin also was investigated in water and in phosphate buffer; the buffer pH and ionic strength were adjusted to 6.5 and 0.1, respectively. The in vitro results indicated that quinidine was adsorbed onto kaolin. At the highest concentration studied, the extent of adsorption increased from 3.64 mg of quinidine adsorbed/g of adsorbent at pH 2.4 to an average of 5.81 mg/g in the pH 5.5-7.5 range. In the presence of electrolytes, the interaction of quinidine with pectin was relatively small (3-13% bound) as compared to studies performed in water (66-90% bound). The data indicate that some quinidine may be adsorbed when this drug is administered concurrently with kaolin-pectin preparations.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Bucci AJ,Myre SA,Tan HS,Shenouda LSdoi
10.1002/jps.2600700907subject
Has Abstractpub_date
1981-09-01 00:00:00pages
999-1002issue
9eissn
0022-3549issn
1520-6017pii
S0022-3549(15)43879-1journal_volume
70pub_type
杂志文章abstract：:Dose individualization is essential in epilepsy treatment, especially in antiepileptic drugs that present high interindividual variability such as lamotrigine. We aimed an observational study to develop a population pharmacokinetic model for quantitative evaluation of the factors that influence lamotrigine pharmacokin...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2020.05.030
更新日期：2020-09-01 00:00:00
abstract：:Review of the current literature on racial differences in pharmacokinetics of drugs supports the premise that only pharmacokinetic processes which are biologically or biochemically mediated have the potential to exhibit differences between racial or ethnic groups. Thus, the pharmacokinetic factors which can be expecte...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章,评审
doi：10.1021/js9702168
更新日期：1997-12-01 00:00:00
abstract：:The purpose of the present study was to develop a physiologically based pharmacokinetic model for dextromethorphan (DEX) and its metabolites in extensive and poor metabolizers. The model was used to study the influence of dissolution rates on the sensitivity of maximum plasma concentration and area under the concentra...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2018.09.036
更新日期：2019-01-01 00:00:00
abstract：:New butyrate derivatives were synthesized to investigate the residence time of potent butyric acid in vivo. These derivatives were triglycerides in which one, two, or three butyric acid molecules were bound to glycerol or to mono- and dipalmitic esters of glycerol. Pharmacokinetic studies showed that a constant plasma...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：
更新日期：1993-10-01 00:00:00
abstract：:Cephalosporins are among the most frequently used broad-spectrum antimicrobial agents. Ceftazidime is a semisynthetic β-lactam antibiotic for parenteral administration widely used in the clinical practice, which has been categorized as a third-generation cephalosporin antibiotic. This drug crystallizes as a pentahydra...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2019.11.018
更新日期：2020-03-01 00:00:00
abstract：:Plasma and various organ concentrations of canrenone, canrenoate, and total 3H-activity were measured following single doses of 20 mg of 3H-canrenoate/kg iv to rabbits. Organs studied included heart, lungs, brain, kidneys, liver, adrenal glands, and spleen. Canrenoate was shown to be in rapid equilibrium with canrenon...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600660237
更新日期：1977-02-01 00:00:00
abstract：:The aim of this work was to optimize the absorption of parathyroid hormone 1-34 (PTH) from the lungs by determining factors favoring its transport from the air spaces into the bloodstream. We simultaneously conducted pharmacokinetic and regional lung deposition studies in vivo in the rat following intratracheal admini...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.20053
更新日期：2004-05-01 00:00:00
abstract：:Insight into the stratum corneum (SC) permeation pathway for hydrophilic compounds is gained by comparing experimental measurements of permeability and lag time (tlag) with the predictions of a finite element (FE) model. A database of permeability and lag time measurements (n=27) of hydrophilic compounds was compiled ...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.20695
更新日期：2006-10-01 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
pub_type： 杂志文章
doi：10.1002/jps.23558
更新日期：2013-07-01 00:00:00
abstract：:The goal was to evaluate the effects of acidity, expressed as the Hammett acidity function, on chemical reactivity in freeze-dried materials (lyophiles). Dextran-sucrose-citrate and polyvinyl pyrrolidone (PVP)-sucrose-citrate aqueous solutions, adjusted to pH values of 2.6, 2.8, and 3.0 were freeze dried, and characte...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.21081
更新日期：2008-01-01 00:00:00
abstract：:The comparative pharmacokinetics of free MTP-PE (muramyl tripeptide phosphatidyl ethanolamine) and MTP-PE entrapped in negatively charged multilamellar liposomes (liposomal MPT-PE) was evaluated in rats at a bolus intravenous (i.v.) dose of 0.2 mg/kg and in dogs at a bolus i.v. dose of 0.1 mg/kg. Additional studies we...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600821005
更新日期：1993-10-01 00:00:00
abstract：:Inducing immune responses protecting from HIV infection or at least controlling replication poses a huge challenge to modern vaccinology. An increasingly discussed strategy to elicit a potent and broad neutralizing antibody response is the immobilization of HIV's trimeric envelope (Env) surface receptor on a nanoparti...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2019.10.059
更新日期：2020-01-01 00:00:00
abstract：:The release kinetics of a polymeric-controlled release device are determined by its geometry and dimensions. A method to calculate the required size and shape of diffusion-controlled dosage forms to achieve a particular release profile is presented. The diffusion parameters are determined for various drugs (theophylli...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1021/js980006a
更新日期：1998-07-01 00:00:00
abstract：:In the present study, the interaction between phenobarbital and activated carbons which is driven by hydrophobic bonding was evaluated. The Two-Mechanism Langmuir-Like Equation was proposed to describe the isotherms for phenobarbital adsorbing to activated carbons. The parameters in the Two-Mechanism Langmuir-Like Equ...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2018.06.018
更新日期：2019-01-01 00:00:00
abstract：:Protein aggregates are a potential risk factor for immunogenicity. The measurement, characterization, and control of protein aggregates in drug products are indispensable for the development of biopharmaceuticals, including therapeutic mAbs. In this study, Fcγ receptor (FcγR)-expressing reporter cell lines were used t...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2019.10.046
更新日期：2020-01-01 00:00:00
abstract：:Solution pH and ionic strength (I) have complex effects on protein stability. We developed an experimental approach based on exploitation of the zwitterionic characteristic of amino acid molecules to probe the relative contribution from each. A variety of types of amino acid solutions were adopted to investigate the e...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.24118
更新日期：2014-10-01 00:00:00
abstract：:We have shown that adsorbability of local anesthetics onto activated carbon, expressed by the partition coefficients at infinite dilution, correlated well with the pharmacological activity. However, there is no parameter that can singly express the tendency to be adsorbed. Adsorbability is a loosely defined term and i...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600790418
更新日期：1990-04-01 00:00:00
abstract：:The concentrations of antipyrine in plasma and saliva were equivalent in normal volunteers and in patients with acute viral hepatitis following oral doses of antipyrine. Estimates of clearance, volume of distribution, and half-life made from either plasma or saliva samples were not statistically different in these sub...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600660140
更新日期：1977-01-01 00:00:00
abstract：:This work involves the study of the solid-phase and solution crystallization behavior of the N-methylephedrine enantiomers. A systematic investigation of the melt phase diagram of the enantiomeric N-methylephedrine system was performed considering polymorphism. Two monotropically related modifications of the enantiome...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2016.08.005
更新日期：2016-11-01 00:00:00
abstract：:A GLC method for determining theophylline, hydroxyethyltheophylline, and diphenylpyraline hydrochloride is presented. The method permits the separation and quantitative determination of the therapeutically active ingredients with a single injection in an overall time of approximately 2.5 hr. ...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600680438
更新日期：1979-04-01 00:00:00
abstract：:In vivo studies were conducted in rats to determine the role of hyperglycemia and hypoinsulinemia in the previously reported reduction in the hepatic accumulation and increase in the serum concentrations of 70-kDa fluorescein-dextran (FD-70) in diabetic (D) rats. The serum, urine, and hepatic concentrations of FD-70 w...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600830719
更新日期：1994-07-01 00:00:00
abstract：:Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has received considerable attention as a potential anticancer agent. However, recombinant Apo2L/TRAIL has several limitations, which include a weak pharmacokinetic profile, namely, a short biological half-life and rapid renal clearance, and an inability t...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.22298
更新日期：2011-02-01 00:00:00
abstract：:The physicochemical properties of A-75998, a synthetic antagonist of luteinizing hormone releasing hormone with potential for treatment of hormone-sensitive cancers and endometriosis, are described. An accelerated solution stability study indicated that the compound is relatively stable and showed a U-shaped pH-rate p...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600840810
更新日期：1995-08-01 00:00:00
abstract：:Carvedilol is a new beta-blocking agent with vasodilating activities, which is a racemic mixture of R(+)- and S(-)-enantiomers. Since the two enantiomers differ in pharmacological properties, it is necessary to individually measure their plasma concentrations in order to evaluate the pharmacological effects of racemic...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600790704
更新日期：1990-07-01 00:00:00
abstract：:Foam granulation is a relatively newer wet granulation process whereby foamed binder solutions are added to powders in a mixer. It is essential to understand the effect of powder substrate on foam drainage and half-life, which are relevant to nucleation and agglomeration during foam granulation. Hydroxypropyl methylce...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.23053
更新日期：2012-04-01 00:00:00
abstract：:Product temperature (Tb) and drying time constitute critical material attributes and process parameters in the lyophilization process and especially during the primary drying stage. In the study, we performed a temperature measurement by the sublimation rate (TMbySR) to monitor the Tb value and determine the end point...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2019.02.015
更新日期：2019-07-01 00:00:00
abstract：:Two polymorphs of the 1:1 fumarate salt of 1,4-diazabicyclo[3.2.2]nonane-4-carboxylic acid 4-bromophenyl ester, developed for the treatment of cognitive symptoms of schizophrenia and Alzheimer disease, have been characterized. The 2 crystal structures have been solved, and their phase relationships have been establish...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2015.10.015
更新日期：2016-01-01 00:00:00
abstract：:Transformation of polymorph I of clopidogrel hydrogen sulfate (CHS) to polymorph II of CHS during the crystallization was monitored by using in situ measurement of ultrasonic velocity. Drowning-out crystallization using methanol as a solvent and isopropyl alcohol as nonsolvent was carried out. The polymorphs were iden...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.21313
更新日期：2008-10-01 00:00:00
abstract：:We previously reported nonaqueous silicone elastomer gels (SEGs) for sustained vaginal administration of the CCR5-targeted entry inhibitor maraviroc (MVC). Here, we describe chemically modified SEGs (h-SEGs) in which the hydrophobic cyclomethicone component was partially replaced with relatively hydrophilic silanol-te...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.23913
更新日期：2014-05-01 00:00:00
abstract：:Pretreatment with cyclosporine reportedly prolongs the effect of certain general anesthetics in humans and the sleeping time of mice after pentobarbital administration. This investigation was designed to determine the mechanism(s) of the cyclosporine-barbiturate interaction. Adult female Wistar rats received cyclospor...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600790106
更新日期：1990-01-01 00:00:00
