Degradation kinetics of phentolamine hydrochloride in solution.

abstract：:The melt from the usual monoclinic phase (Phase I) of biclotymol (T(fusI) = 400.5 +/- 1.0 K, Delta(fus)H(I) = 36.6 +/- 0.9 kJ mol(-1)) recrystallizes into another phase, Phase II, that melts at T(fusII) = 373.8 +/- 0.2 K (Delta(fus)H(II) = 28.8 +/- 1.0 kJ mol(-1)). The transformation of Phase II into Phase I is found ...

journal_title：Journal of pharmaceutical sciences

authors： Céolin R,Tamarit JL,Barrio M,López DO,Nicolaï B,Veglio N,Perrin MA,Espeau P

更新日期：2008-09-01 00:00:00

abstract：:Nanocrystals have emerged as a potential formulation strategy to eliminate the bioavailability-related problems by enhancing the initial dissolution rate and moderately super-saturating the thermodynamic solubility. This review contains an in-depth knowledge of, the processing method for formulation, an accurate quant...

journal_title：Journal of pharmaceutical sciences

authors： Shah DA,Murdande SB,Dave RH

更新日期：2016-01-01 00:00:00

abstract：:Human alpha(1)-acid glycoprotein (AGP), a major carrier of many basic drugs in circulation, consists of at least two genetic variants, namely A and F1*S variant. Interestingly, the variants of AGP have different drug-binding properties. The purpose of this study was to identify the amino acid residues that are respons...

journal_title：Journal of pharmaceutical sciences

authors： Nishi K,Ueno M,Murakami Y,Fukunaga N,Akuta T,Kadowaki D,Watanabe H,Suenaga A,Maruyama T,Otagiri M

更新日期：2009-11-01 00:00:00

abstract：:The intrinsic factor-mediated binding of cyanocobalamin to cholestyramine was studied in vitro under varying conditions of pH, added electrolyte, and bile salt. The intrinsic factor-cyanocobalamin complex was adsorbed strongly by the resin at pH 3 in the presence of neutral salt and low concentrations of glycocholic a...

journal_title：Journal of pharmaceutical sciences

authors： Andersen KJ,Schjønsby H

更新日期：1978-11-01 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

authors： Forbes CJ,McCoy CF,Murphy DJ,Woolfson AD,Moore JP,Evans A,Shattock RJ,Malcolm RK

更新日期：2014-05-01 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

authors： Bates TR,Carrigan PJ

更新日期：1975-09-01 00:00:00

abstract：:Many pathophysiological circumstances vary during 24 h periods. Many physiologic processes undergo biological rhythms, including the sleep-wake rhythm and metabolism. Disruptive effect in the 24 h variations can manifest as the emergence or exacerbation of pathological conditions. So, chronotherapeutics is gaining inc...

journal_title：Journal of pharmaceutical sciences

authors： Ohdo S,Koyanagi S,Matsunaga N,Hamdan A

更新日期：2011-09-01 00:00:00

abstract：:Vaults, at 13 MDa, are the largest ribonucleoprotein particles known. In vitro, expression of the major vault protein (MVP) alone in Sf9 insect cells results in the production of recombinant particles with characteristic vault structure. With the ultimate goal of using recombinant vaults as nanocapsules for the delive...

journal_title：Journal of pharmaceutical sciences

authors： Esfandiary R,Kickhoefer VA,Rome LH,Joshi SB,Middaugh CR

更新日期：2009-04-01 00:00:00

abstract：:A crossover experiment was utilized to compare the pharmacokinetics of a 1-g dose of cephalexin tablets, cephalexin capsules, or cephradine capsules in nine normal human volunteers. These antibiotics were administered as three formulations: two 500-mg capsulin every 6 hr for five doses, and one 1000-mg tablet of cepha...

journal_title：Journal of pharmaceutical sciences

authors： Finkelstein E,Quintiliani R,Lee R,Bracci A,Nightingale CH

更新日期：1978-10-01 00:00:00

abstract：:A stability-indicating analytical method is described for the simultaneous determination of nitrate, and if present, its reductive degradation product, nitrite, in toothpastes. Nitrate and nitrite were extracted from the toothpaste using distilled water and separated from other water-soluble excipients by two RP-8 col...

journal_title：Journal of pharmaceutical sciences

authors： Lulla H,Chen SS,Sena FJ

更新日期：1984-07-01 00:00:00

abstract：:Historically, recovery had been used to evaluate the data quality of plasma protein binding or tissue binding obtained from equilibrium dialysis assays. Low recovery was often indicative of high nonspecific binding, instability, or low solubility. This study showed that, when equilibrium was fully established in the d...

journal_title：Journal of pharmaceutical sciences

authors： Di L,Umland JP,Trapa PE,Maurer TS

更新日期：2012-03-01 00:00:00

abstract：:Recently developed techniques were applied in a preformulation program to select a compound and a suitable salt for use in a one-month toxicological test. The program showed that valuable information can be obtained prior to the choice of a compound as a candidate for a solid-dosage form. Information about the physica...

journal_title：Journal of pharmaceutical sciences

authors： Graffner C,Johansson ME,Nicklasson M,Nyqvist H

更新日期：1985-01-01 00:00:00

abstract：:New dihydropyridine in equilibrium pyridinium salt-type redox carrier systems were developed in which the drug is linked via the ring nitrogen atom of nicotinamide. The rate of oxidation of the dihydropyridine forms, and thus the overall and brain-specific distribution of the corresponding 3-carbamoyl-1-carbamoylalkyl...

journal_title：Journal of pharmaceutical sciences

authors： Bodor N,AbdelAlim AM

更新日期：1985-03-01 00:00:00

abstract：:The present study aims to evaluate the in vitro and in vivo performance of ordered mesoporous silica (OMS) as a carrier for the poorly water-soluble compound fenofibrate. Fenofibrate was loaded into OMS via incipient wetness impregnation to obtain a 29% drug load and formulated into capsules. Two capsule dosage forms ...

journal_title：Journal of pharmaceutical sciences

authors： Bukara K,Schueller L,Rosier J,Daems T,Verheyden L,Eelen S,Martens JA,Van den Mooter G,Bugarski B,Kiekens F

更新日期：2016-08-01 00:00:00

abstract：:Dissolving microneedle patches offer promise as a simple, minimally invasive method of drug and vaccine delivery to the skin that avoids the need for hypodermic needles. However, it can be difficult to control the amount and localization of drug within microneedles. In this study, we developed novel microneedle design...

journal_title：Journal of pharmaceutical sciences

authors： Chu LY,Choi SO,Prausnitz MR

更新日期：2010-10-01 00:00:00

abstract：:In liver microsomes, selexipag (NS-304; ACT-293987) mainly undergoes hydrolytic removal of the sulfonamide moiety by carboxylesterase 1 (CES1) to yield the pharmacologically active metabolite MRE-269 (ACT-333679). However, it is not known how much CES in the liver and intestine contributes to the hydrolysis of selexip...

journal_title：Journal of pharmaceutical sciences

authors： Imai S,Ichikawa T,Sugiyama C,Nonaka K,Yamada T

更新日期：2019-02-01 00:00:00

abstract：:A dermal penetration enhancer has been found which improves the dermal delivery of a wide variety of drugs and at the same time has a history of low toxicity for human dermal application. N,N-Diethyl-m-toluamide (I) has been shown to improve the delivery of many drugs through hairless mouse skin in an in vitro diffusi...

journal_title：Journal of pharmaceutical sciences

authors： Windheuser JJ,Haslam JL,Caldwell L,Shaffer RD

更新日期：1982-11-01 00:00:00

abstract：:The bioavailability of three different brands and three different dosage forms of doxycycline was studied in normal subjects. Single doses, equivalent to 200 mg of doxycycline, were administered to six subjects in a crossover design as the innovator's intravenous solution given orally (Treatment A), the innovator's ca...

journal_title：Journal of pharmaceutical sciences

authors： Antal EJ,Jaffe JM,Poust RI,Colaizzi JL

更新日期：1975-12-01 00:00:00

abstract：:Peptide-based therapies have the potential to induce antibody formation if the molecules differ from a native human peptide. Several reports have disclosed the occurrence of antibody generation in a patient treated with exenatide. The immune response can be problematic from a clinical stand point, particularly if the ...

journal_title：Journal of pharmaceutical sciences

authors： Lim SM,Eom HN,Jiang HH,Sohn M,Lee KC

更新日期：2015-01-01 00:00:00

abstract：:Baclofen immediate release mode of administration exhibit sharp plasma peaking that results in the emergence of side effects like hypotension. This research employs preformulation studies to design an optimum dosage form for baclofen to enhance therapeutic outcomes. These studies include partition coefficient and ex-v...

journal_title：Journal of pharmaceutical sciences

authors： Ibrahim M,Naguib YW,Sarhan HA,Abdelkader H

更新日期：2020-10-15 00:00:00

abstract：:Postabsorptive factors which can affect systemic drug exposure are assumed to be dependent on the active pharmaceutical ingredient (API), and thus independent of formulation. In contrast, preabsorptive factors, for example, hypochlorhydria, might affect systemic exposure in both an API and a formulation-dependent way....

journal_title：Journal of pharmaceutical sciences

authors： Cristofoletti R,Patel N,Dressman JB

更新日期：2017-02-01 00:00:00

abstract：:The use of various synthetic lipids and polymers to deliver DNA for gene therapy applications has been the subject of intense examination for the last 15 years. Our understanding of the processes involved in the delivery of DNA, although still limited, can be described in terms of specific physical and chemical barrie...

journal_title：Journal of pharmaceutical sciences

authors： Wiethoff CM,Middaugh CR

更新日期：2003-02-01 00:00:00

abstract：:Bisphosphonates are widely used for the treatment of bone diseases, including hypercalcemia and osteoporosis. However, the bioavailability (BA) of orally administered bisphosphonates is low, at approximately 0.9%-1.8%. In addition, the oral administration of bisphosphonates is associated with mucosal damage, including...

journal_title：Journal of pharmaceutical sciences

authors： Katsumi H,Takashima M,Sano J,Nishiyama K,Kitamura N,Sakane T,Hibi T,Yamamoto A

更新日期：2011-09-01 00:00:00

abstract：:Alkyl 2-imidazolyl disulfide compounds are novel antitumor agents, one of which is currently being evaluated in Phase I clinical trials. These molecules contain an unsymmetrical disulfide fragment, the lipophilic and electronic contributions of which are still not defined in the literature. Lipophilicity, ionization, ...

journal_title：Journal of pharmaceutical sciences

authors： Hashash A,Kirkpatrick DL,Lazo JS,Block LH

更新日期：2002-07-01 00:00:00

abstract：:The relative sweetness, onset times, and durations of response of D-glucose, D-xylose, D-quinovose, D-galactose, L-arabinose, and D-fucose were determined at four temperatures. The results can be interpreted by simple concepts of intramolecular hydrogen bonding which indicate that the so-called gamma-function of the t...

journal_title：Journal of pharmaceutical sciences

authors： Birch GG,Dziedzic SZ,Shallenberger RS,Lindley MG

更新日期：1981-03-01 00:00:00

abstract：:A procedure for the determination of mianserin, desmethylmianserin, and 8-hydroxymianserin in plasma at therapeutic concentrations by liquid chromatography with electrochemical detection is described. Following a multiple-step extraction from alkaline plasma into methyl-tert-butyl ether, the reconstituted extract was ...

journal_title：Journal of pharmaceutical sciences

authors： Suckow RF,Cooper TB,Quitkin FM,Stewart JW

更新日期：1982-08-01 00:00:00

abstract：:Pepsin adsorbed on gibbsite or boehmite, non-acid-reactive forms of aluminum hydroxide, had a significantly lower activity than pepsin in solution. IR and desorbed pepsin activity studies showed that the reduced activity of adsorbed pepsin was not due to denaturation of pepsin on adsorption. Steric occlusion of the ac...

journal_title：Journal of pharmaceutical sciences

authors： Sepelyak RJ,Feldkamp JR,Regnier FE,White JL,Hem SL

更新日期：1984-11-01 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

authors： Gerges J,Affouard F

更新日期：2020-02-01 00:00:00

abstract：:The aim of this work was to evaluate the low molecular weight chitosans (LMWCs) as enhancers of transdermal administration of baicalin, an useful drug for the treatment of atopic dermatitis, viral hepatitis, and HIV infection. Permeation experiments were performed in vitro through mouse skin by using Franz cells. Impr...

journal_title：Journal of pharmaceutical sciences

authors： Zhou X,Liu D,Liu H,Yang Q,Yao K,Wang X,Wang L,Yang X

更新日期：2010-07-01 00:00:00

abstract：:Apomorphine, a dopamine receptor agonist for treating Parkinson's disease, has very poor oral bioavailability (<2%) due to the first-pass effect. The aim of this work was to investigate whether the oral bioavailability and brain regional distribution of apomorphine could be improved by utilizing solid lipid nanopartic...

journal_title：Journal of pharmaceutical sciences

authors： Tsai MJ,Huang YB,Wu PC,Fu YS,Kao YR,Fang JY,Tsai YH

更新日期：2011-02-01 00:00:00