Abstract：
:The concept of cosolvent exclusion was developed by a group of Timasheff's laboratory in 1970-1990 and is currently used widely to explain the effects of a variety of cosolvents on the stability and solubility of macromolecules. Not surprisingly, these concepts have had substantial influence in the fields of formulation, protein folding and unfolding, but they have perhaps more surprisingly found their way into the field of chromatography. A variety of excluded cosolvents have been used to enhance binding and resolution of proteins and other macromolecules in ion exchange, hydroxyapatite, affinity, and hydrophobic interaction chromatography. These cosolvents include salting-out salts, amino acids and polymers, and frequently polyethylene glycol (PEG). A new mode of chromatography, termed "steric exclusion chromatography," was recently introduced. It employs hydroxylated solid phase surfaces. Steric exclusion of the PEG stabilizes the association of macromolecules with the solid phase. Elution is achieved by reducing the PEG concentration. Magnetic particles are also used in this chromatography. This review summarizes the concepts of preferential cosolvent exclusion and its applications in column chromatography.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Arakawa T,Gagnon Pdoi
10.1016/j.xphs.2018.05.006subject
Has Abstractpub_date
2018-09-01 00:00:00pages
2297-2305issue
9eissn
0022-3549issn
1520-6017pii
S0022-3549(18)30310-1journal_volume
107pub_type
杂志文章,评审abstract：:The pKa values of benzoic acid, p-methylbenzoic, and p-aminobenzoic acid (PABA) were determined by potentiometric titration in mixtures of 0-0.5 volume fractions of various cosolvents and water. The differences between the aqueous and semiaqueous pKa values were similar for the three solutes at a particular cosolvent-...
journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.2600721025
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abstract：:A novel method for creating water soluble prodrugs of cisplatin analogues bearing chelating diamines is introduced. When 2-(amino-methyl)aniline is reacted with K2PtCl4 between a pH of 6 and 7, the neutral chelated complex [2-(aminomethyl)aniline)dichloroplatinum(II) (1) is isolated. On the other hand, when the comple...
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doi：10.1002/jps.2600840707
更新日期：1995-07-01 00:00:00
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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journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.2600741203
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abstract：:Oxycodone is an opioid analgesic that is administered orally or parenterally. The time-course of opioid action is a function of the systemic kinetics of the opioid, and the rate and extent of its entry into the brain and central nervous system. The latter is incompletely understood for oxycodone. Therefore, the cerebr...
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doi：10.1002/jps.20632
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doi：10.1002/jps.2600710713
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abstract：:Isomazole matrix tablet formulations, with various concentrations of hydroxypropyl methylcellulose (HPMC) hydrogel, were prepared and tested for sustained-release activity. Sustained-release activity was determined by administering isomazole test formulations orally to conscious dogs, instrumented with an indwelling l...
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doi：10.1002/jps.2600780715
更新日期：1989-07-01 00:00:00
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journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.2600690530
更新日期：1980-05-01 00:00:00
abstract：:Sonication process is regularly adopted for dispersing single-walled carbon nanotubes (SWCNTs) in an aqueous medium. This can be achieved by either covalent functionalization of SWCNTs with strong acid or by noncovalent functionalization using dispersants that adsorb onto the surface of SWCNTs during dispersion. Becau...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.24483
更新日期：2015-08-01 00:00:00
abstract：:(13) C cross-polarization magic-angle spinning nuclear magnetic resonance (CPMAS NMR) spectroscopy was applied to the identification and characterization of carvedilol (1-(9H-carbazol-4-yloxy)-3-[2-(2-methoxyphenoxy)-ethylamino]-propan-2-ol) in pharmaceutical preparations. Solid-state spectra (standard linewidth and l...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.23062
更新日期：2012-05-01 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
pub_type： 杂志文章
doi：10.1002/jps.2600650832
更新日期：1976-08-01 00:00:00
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journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600650119
更新日期：1976-01-01 00:00:00
abstract：:Inclusion complexes between beta-cyclodextrin derivatives and 1, 2-dithione-3-thiones were studied in aqueous solution and in the solid state. Phase solubility study was used to evaluate the complexation in solution, at 37 degrees C, of three cyclodextrins, i. e., beta-cyclodextrin (betaCD), hydroxypropyl-beta-cyclode...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1021/js990067o
更新日期：1999-09-01 00:00:00
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journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.10404
更新日期：2003-07-01 00:00:00
abstract：:Therapeutic antibodies and antibody derivatives comprise the majority of today's biotherapeutics. Routine methods to generate novel antibodies, such as immunization and phage-display, often give rise to several candidates with desired functional properties. On the contrary, resource-intense steps such as the developme...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章,评审
doi：10.1002/jps.24430
更新日期：2015-06-01 00:00:00
abstract：:Acute experiments were performed on overnight fasted chloralose-urethan anesthetized dogs, cats, rabbits, and rats. Under these conditions, somatostatin practically abolished gastric contractions and decreased GI tonus in all species examined. The canine duodenum, jejunum, and ileum exhibited only a contractile respon...
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pub_type： 杂志文章
doi：10.1002/jps.2600680913
更新日期：1979-09-01 00:00:00
abstract：:Tissue-specific ultrasonic enhancement can be used for the detection and characterization of atherosclerosis. We have previously demonstrated the generation of inherently echogenic (acoustically reflective) liposomes solely by varying lipid composition and controlling the method of production. In this study, echogenic...
journal_title：Journal of pharmaceutical sciences
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doi：10.1021/js9603515
更新日期：1997-02-01 00:00:00
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doi：10.1002/jps.2600680834
更新日期：1979-08-01 00:00:00
abstract：:The aim of this study was to utilize high-speed video imaging for understanding the disintegrability of compacts and disintegrant action upon wetting. High-speed video imaging was used to visualize the disintegration of compacts and effect of wetting on free disintegrant particles. Acquired images were processed using...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.23119
更新日期：2012-06-01 00:00:00
abstract：:Optical coherence tomography (OCT) is a recently developed optical technique that produces depth profiles of three-dimensional objects. It is a nondestructive interferometric method responding to refractive index variation in the sample under study and can reach a penetration depth of a few millimetres. OCT employs ne...
journal_title：Journal of pharmaceutical sciences
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doi：10.1002/jps.21844
更新日期：2010-01-01 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
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abstract：:This study was aimed to investigate chemical preactivated thiomers for their potential use in mucosal drug delivery. Thiomers--thiolated polymers--are mucoadhesive polymers with sulfhydryl group-bearing side chains. Thiomers are synthesized by covalent attachment of low molecular mass compounds bearing sulfhydryl grou...
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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
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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...
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journal_title：Journal of pharmaceutical sciences
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abstract：:The University of British Columbia (UBC) became the first university in Canada to develop a strategy for enhancing global access to its technologies. UBC's University-Industry Liaison Office, in collaboration with the UBC chapter of Universities Allied for Essential Medicines (UAEM), established a mandate and develope...
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abstract：:The biological activity of a series of 10 silver sulfanilamides is studied in relation to the physical parameters pK alpha, log K, and the aqueous solubility. None of the parameters demonstrate a simple relationship with the activity. A discussion of the significance of log K and the solubility in relation to the acti...
journal_title：Journal of pharmaceutical sciences
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更新日期：1984-01-01 00:00:00
