Abstract：
:The effect of the protein stabilizers on the stability and aerosol performance of spray dried recombinant human growth hormone (SD rhGH) was investigated. rhGH solution was spray dried alone, with polysorbate 20 (at three concentrations of 0.05%, 0.01%, and 0.005%), Zn(2+) (by Zn(2+):rhGH molar ratio of 2:1 and 4:1), and/or lactose (by lactose:rhGH weight ratio of 2:1). Size exclusion chromatography (SEC) analysis of spray dried powders demonstrated that of all the potential protein stabilizers, the combination of polysorbate 20 (0.05%), Zn(2+) (Zn(2+):rhGH molar ratio of 2:1) and lactose (lactose:rhGH weight ratio of 2:1) was the most effective at protecting rhGH against aggregation during spray drying. The results of circular dichroism (CD) analysis revealed that using of polysorbate 20 (in all concentrations) and Zn(2+) (by Zn(2+):rhGH molar ratio of 2:1) together in the formulations would preserve rhGH conformational stability during the process. The particle size distribution data obtained by laser diffraction method showed all SD rhGH formulations had volume median diameter and mean diameter below 5mum. The characterization of the aerosol performance of the spray dried powders by Andersen cascade impactor (ACI) showed that by increasing the concentration of polysorbate 20 in the formulations the aerodynamic efficiency of the resultant particles was reduced. In conclusion, the optimum amounts of polysorbate 20, Zn(2+) and lactose satisfied both physical stability during spray drying process (2.37% aggregation) and good aerosol performance (fine particle fraction; FPF=38.52%).
journal_name
Int J Pharmjournal_title
International journal of pharmaceuticsauthors
Jalalipour M,Gilani K,Tajerzadeh H,Najafabadi AR,Barghi Mdoi
10.1016/j.ijpharm.2007.10.053subject
Has Abstractpub_date
2008-03-20 00:00:00pages
209-16issue
1-2eissn
0378-5173issn
1873-3476pii
S0378-5173(07)00874-5journal_volume
352pub_type
杂志文章abstract：:A centrifuge method has been applied to the assessment of water retention in pharmaceutical powders. Five drug models and microcrystalline cellulose (MCC) were each mixed with different amounts of water and centrifuged at different speeds. The amount of water retained by the wet mass was evaluated by drying the powder...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(99)00201-x
更新日期：1999-10-15 00:00:00
abstract：:Cyclodextrins (CDs) offer a very broad spectrum of applications in diverse fields of drug delivery. They are a family of cyclic α-(1-4)-linked oligosaccharides of α-d-glucopyranose subunits forming a more hydrophobic central cavity and a hydrophilic outer shell. CDs bear cage like supramolecular structures, similar to...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章,评审
doi：10.1016/j.ijpharm.2013.12.004
更新日期：2014-01-30 00:00:00
abstract：:The tack of a pressure sensitive adhesive (PSA) is not an inherent material property and strongly depends on the measurement conditions. Following the concept of a measurement system analysis (MSA), influencing factors of the probe tack test were investigated by a design of experiments (DoE) approach. A response surfa...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2015.09.061
更新日期：2015-12-30 00:00:00
abstract：:This work focuses on the relevance of antibacterial nanofibers based on a polyelectrolyte complex formed between positively charged chitosan (CHT) and an anionic hydroxypropyl betacyclodextrin (CD)-citric acid polymer (PCD) complexing triclosan (TCL). The study of PCD/TCL inclusion complex and its release in dynamic c...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2016.09.060
更新日期：2016-11-20 00:00:00
abstract：:Cationic liposomes spontaneously interact with negatively charged plasmid DNA to form a transfection competent complex capable of promoting the expression of a therapeutic gene. This work aims to improve the understanding of the poorly defined mechanisms and structural rearrangements associated with the lipid-DNA inte...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(99)00117-9
更新日期：1999-06-25 00:00:00
abstract：:Cationic polyphosphoesters (PPEs) with different side-chain charge groups were designed and synthesized as biodegradable gene carriers. Poly(N-methyl-2-aminoethyl propylene phosphate) (PPE-MEA), with a secondary amino group (-CH(2)CH(2)NHCH3) side chain released DNA in several hours at N/P (amino group of polymer to p...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2003.07.006
更新日期：2003-10-20 00:00:00
abstract：:Baicalein, wogonin, and oroxylin A are three major hydrophobic components in the extract of Radix scutellariae with wide spectrum of pharmacological applications. The purpose of this study was to enhance the solubility, dissolution rate and stability of baicalein, wogonin and oroxylin A by solid dispersion (SD) techni...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2017.06.068
更新日期：2017-08-07 00:00:00
abstract：:The aim of this study was using Eudragit-cysteine conjugate to coat on chitosan microspheres (CMs) for developing an oral protein drug delivery system, having mucoadhesive and pH-sensitive property. Bovine serum albumin (BSA) as a protein model drug was loaded in thiolated Eudragit-coated CMs (TECMs) to study the rele...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2008.04.003
更新日期：2008-07-09 00:00:00
abstract：:Chitosan microparticles as carriers for GRA-1 protein vaccine were prepared and characterized with respect to loading efficiency and GRA-1 stability after short-term storage. Chitosan nanoparticles as carriers for GRA-1 pDNA vaccine were prepared and characterized with respect to size, zeta potential, and protection o...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(03)00377-6
更新日期：2003-11-06 00:00:00
abstract：:Three rapid and sensitive, colorimetric and atomic absorption spectrometric methods were developed for the determination of aztreonam. The proposed methods depend upon the reaction of cobaltthiocyanate (I) or reineckate (II) ions with the drug to form stable ion-pair complexes which extractable with chloroform. The gr...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(00)00467-1
更新日期：2000-09-15 00:00:00
abstract：:The aim of the present work was the development of sponge-like dressings, obtained by freeze-drying, based on chitosan glutamate and sodium hyaluronate for platelet lysate (PL) delivery to chronic skin wounds. A first phase of the research focused on the choice of the best dressing composition to obtain formulations e...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2012.07.056
更新日期：2013-01-20 00:00:00
abstract：:Electrospun nanofibers are being utilized for a wide range of healthcare applications. A plethora of natural and synthetic polymers are exploited for their ability to be electrospun and replace the complex habitat provided by the extracellular matrix for the cells. The fabrication of nanofibers can be tuned to act as ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章,评审
doi：10.1016/j.ijpharm.2017.03.013
更新日期：2017-05-15 00:00:00
abstract：:The aim of the present work was the synthesis and study the kinetics and profiles of camptothecin (CPT) release form block co- and ter-polymer conjugates comprising polylactide (PLA) segments and CPT moieties, structurally diverse by degrees of branching, content of d-PLA units and poly(ethylene glycol) methyl ether m...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2018.01.022
更新日期：2018-03-01 00:00:00
abstract：:Naltrexone hydrochloride (NTX) is a promising treatment for corneal disorders linked to diabetes mellitus (diabetic keratopathy). However, NTX has a major stability problem due to autoxidation, which is likely to hinder its formulation as eye drops for treatment of diabetic keratopathy. In this study, in-house develop...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2012.05.011
更新日期：2012-08-20 00:00:00
abstract：:A novel thiomer derivative of glycol chitosan (GCS) was synthesized by coupling with thioglycolic acid (TGA) and evaluated for the pulmonary delivery of peptides. Nanoparticles (NPs) based on GCS and GCS-TGA were obtained by the ionic gelation method and demonstrated a particle size in the range of 0.23-0.33 microm wi...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2010.07.001
更新日期：2010-09-15 00:00:00
abstract：:Felodipine is a calcium channel blocker, which shows low oral bioavailability (<15%) owing to poor water solubility and high first pass metabolism. The aim of the present investigation was to study the surface science (dynamic surface tension) and characteristics of microemulsion (Capmul MCM, Tween 20 and polyethylene...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2021.120202
更新日期：2021-01-23 00:00:00
abstract：:Solid lipid nanoparticles (SLNs) conjugated with tamoxifen (TX) and lactoferrin (Lf) were applied to carry anticancer carmustine (BCNU) across the blood-brain barrier (BBB) for enhanced antiproliferation against glioblastoma multiforme (GBM). BCNU-loaded SLNs with modified TX and Lf (TX-Lf-BCNU-SLNs) were used to pene...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2015.12.054
更新日期：2016-02-29 00:00:00
abstract：:The present investigation describes a procedure for the synthesis of a glycidyl methacrylated derivative from galactomannan, GA-MA, and the respective hydrogel formation. The galactomannan (GA), raw material, was purified and dissolved in DMSO. After dissolution, 4-dimethyl-amino-pyridine (DMAP) and glycidyl methacryl...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2003.08.001
更新日期：2003-11-28 00:00:00
abstract：:Using latex microspheres as model suspensions, the influence of suspension particle size (1, 4.5 and 10 μm) on the properties of aerosols produced using Pari LC Sprint (air-jet), Polygreen (ultrasonic), Aeroneb Pro (actively vibrating-mesh) and Omron MicroAir NE-U22 (passively vibrating-mesh) nebulisers was investigat...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2013.11.022
更新日期：2014-01-30 00:00:00
abstract：:Micellization offers several advantages for the delivery of water insoluble drugs including a nanoparticulate 'core-shell' delivery system for drug targeting. Recently, hydrophobically modified polysaccharides (HMPs) are gaining recognition as micelle forming polymers to encapsulate hydrophobic drugs. In this manuscri...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2016.01.005
更新日期：2016-03-16 00:00:00
abstract：:The purpose of the present study was to design and evaluate a novel wax matrix system containing various ratios of aminoalkyl methacrylate copolymer E (AMCE) and ethylcellulose (EC) as functional polymers in order to achieve the optimal acetaminophen (APAP) release rate for taste masking. A two factor, three level (3(...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2010.05.007
更新日期：2010-08-16 00:00:00
abstract：:Hydroxyethyl bearing gemini surfactants, alkanediyl-α,ω-bis(N-hexadecyl-N-2-hydroxyethyl-N-methylammonium bromide), 16-s-16(OH), were used to augment phosphatidylcholine based liposomes to achieve higher stability and enhanced cellular uptake and penetration. The developed liposomes were loaded with rhodamine B, doxor...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2020.119640
更新日期：2020-09-25 00:00:00
abstract：:The use of mesh in hernia repair has become common, because of lower recurrence rate and simple application. Data from the meta-analysis and the multi-central studies support the use of meshes in hernia repair. One of the complications due to the hernia repair with mesh is the infection. The incidence range is between...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2009.05.059
更新日期：2009-11-03 00:00:00
abstract：:Topical iodine forms are used for infected and necrotic pressure ulcers. Despite antimicrobial advantages several potential disadvantages were observed with controversial results. To clarify the controversy, the reactivity of povidone-iodine (PI) sugar ointment and cadexomer-iodine (CI) ointment toward biological comp...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2009.01.007
更新日期：2009-05-08 00:00:00
abstract：:For drug delivery to the lungs, the aerodynamic size of drug particles plays a predominant role in determining the sites of deposition in the airway, and the particles with the size less than 2μm are highly expected as they will be preferably delivered to the ideal site of alveolar regions. In this paper, a novel plat...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2017.07.040
更新日期：2017-09-15 00:00:00
abstract：:A micro-capillary rheometer consisted of a fine needle with an internal diameter of 347 microm attached to a 1 ml removable-needle syringe within an Instron device that operated in compression mode to provide various crosshead speeds ranging from 150 to 950 mm min(-1) covering typical clinical injection rates, and tha...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2003.10.008
更新日期：2004-02-11 00:00:00
abstract：:Although the taste-masking of bitter drug using ion exchange resin has been recognized, in vitro testing using an electronic tongue (e-Tongue) and in vivo bitterness test by human panel test was not fully understood. In case of orally disintegrating tablet (ODT) containing bitter medicine, in vitro and in vivo disinte...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2013.07.072
更新日期：2013-10-15 00:00:00
abstract：:A highly accurate nephelometric titration for the determination of promethazine hydrochloride and its preparations was presented. The titration operating conditions were studied and the solubility product constant of promethazine tetraphenylboron precipitation was determined. The result of the titration is comparable ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2005.05.043
更新日期：2005-09-30 00:00:00
abstract：:Chemotherapy via the oral route remains a considerable challenge due to poor water-solubility and permeability of anticancer agents. This study aimed to construct lipid nanoparticles using broccoli-derived lipids for oral delivery of tripterine (Tri), a natural anticancer candidate, and to enhance its oral bioavailabi...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2015.10.011
更新日期：2015-11-30 00:00:00
abstract：:Amphotericin B (AmB) is a wide spectrum antifungal with low incidence of clinical resistance. However, there are no licensed topical formulations with AmB in most developed countries. Extemporaneous preparations of AmB are frequently prepared from available marketed parenteral formulations. Herein, a solution of AmB w...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2012.07.065
更新日期：2012-11-01 00:00:00
