Abstract:
:Droplet velocity is an important parameter that can be used to characterize nasal spray products. In this study, a phase-Doppler anemometry (PDA) system was used to measure the droplet velocities of nasal sprays. A survey of seven commercial nasal spray products showed a range of droplet velocities from 6.7 to 19.2 m/s, all significantly different from each other. A three-level, four-factor Box-Behnken design of experiments (DOE) methodology were applied to investigate the influences of actuation parameters and formulation properties on nasal spray droplet velocity using a set of placebo formulations. The DOE study shows that all four input factors (stroke length, actuation velocity, concentration of the gelling agent, and concentration of the surfactant) have significant influence on droplet velocity. An optimized quadratic model generated from the DOE results describes the inherent relationships between the input factors and droplet velocity thus providing a better understanding of the input factor influences. Overall, PDA provides a new in vitro characterization method for the evaluation of inhalation drugs through assessment of spray velocity and may assist in product development to meet drug delivery equivalency requirements.
journal_name
AAPS PharmSciTechjournal_title
AAPS PharmSciTechauthors
Liu X,Doub WH,Guo Cdoi
10.1208/s12249-011-9594-1subject
Has Abstractpub_date
2011-03-01 00:00:00pages
337-43issue
1issn
1530-9932journal_volume
12pub_type
杂志文章abstract::Pressurized metered dose inhalers (MDIs) were first introduced in the 1950s and they are currently widely prescribed as portable systems to treat pulmonary conditions. MDIs consist of a formulation containing dissolved or suspended drug and hardware needed to contain the formulation and enable efficient and consistent...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章,评审
doi:10.1208/s12249-013-0062-y
更新日期:2014-04-01 00:00:00
abstract::An encapsulation of model drug raloxifene hydrochloride (RAL) inside the chitosan decorated pH responsive mesoporous system has a greater potential for accumulating in the tumor cells. The present study involves synthesis of surface modified mesoporous silica nanoparticles (MSN) with the aim of achieving pH sensitive ...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-017-0949-0
更新日期:2018-04-01 00:00:00
abstract::Formulation effects on the entrapment of beclometasone dipropionate (BDP) in liposomes generated by hydration of proliposomes were studied, using the high-density dispersion medium deuterium oxide in comparison to deionized water (DW). Proliposomes incorporating BDP (2 mol% of the lipid phase consisting of soya phosph...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-017-0793-2
更新日期:2018-01-01 00:00:00
abstract::Cyclodextrins (CDs) are used in oral pharmaceutical formulations, by means of inclusion complexes formation, with the following advantages for the drugs: (1) solubility, dissolution rate, stability, and bioavailability enhancement; (2) to modify the drug release site and/or time profile; and (3) to reduce or prevent g...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章,评审
doi:10.1208/s12249-011-9690-2
更新日期:2011-12-01 00:00:00
abstract::The objective of the present study was to investigate the effects of processing variables and formulation factors on the characteristics of hot-melt extrudates containing a copolymer (Kollidon® VA 64). Nifedipine was used as a model drug in all of the extrudates. Differential scanning calorimetry (DSC) was utilized on...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-014-0226-4
更新日期:2015-04-01 00:00:00
abstract::Colorectal cancer (CRC) is the third most common cancer worldwide. Its poor response to current treatment options in advanced stages and the need for efficient diagnosis in early stages call for the development of new therapeutic and diagnostic strategies. Some of them are based on the use of nanometric materials as c...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章,评审
doi:10.1208/s12249-020-01731-y
更新日期:2020-06-26 00:00:00
abstract::The recommended method for the biopharmaceutical evaluation of drug solubility is the shake flask; however, there are discrepancies reported about the solubility of certain compounds measured with this method, one of them is candesartan cilexetil. The present work aimed to elucidate the solubility of candesartan cilex...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-018-1129-6
更新日期:2018-10-01 00:00:00
abstract::In this study, liquid crystalline nanoparticles (LCN) have been proposed as new carrier for topical delivery of finasteride (FNS) in the treatment of androgenetic alopecia. To evaluate the potential of this nanocarrier, FNS-loaded LCN was prepared by ultrasonication method and characterized for size, shape, in vitro r...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-012-9888-y
更新日期:2013-03-01 00:00:00
abstract::The purpose of this study was to prepare monodisperse gelatin microcapsules containing an active agent using microchannel (MC) emulsification, a novel technique for preparing water-in-oil (W/O) and oil-in-water (O/W) emulsions. As the first step in applying MC emulsification to the preparation of monodisperse gelatin ...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/pt030325
更新日期:2002-01-01 00:00:00
abstract::Itraconazole (ITZ) crystalline nanoparticles were prepared using relatively simple, low-cost sonoprecipitation technique, in which both the solvent and antisolvent were organic in nature. The effect of stabilizer type (hydroxypropyl methylcellulose, hydroxypropyl cellulose, Inutec SP1®, and pluronic F127), drying meth...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-011-9651-9
更新日期:2011-09-01 00:00:00
abstract::Individualized medicines for pediatrics are a useful alternative if there is no correct dosage marketed for this segment (easy to swallow, adequate volume and content, correct composition for pediatrics, good organoleptic properties, etc.). Its validation process must ensure quality testing: its content uniformity, ph...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-019-1432-x
更新日期:2019-06-03 00:00:00
abstract::Hypertension shows circadian blood pressure rhythms (day-night pattern) that urge the delivery of antihypertensive drugs at the right time in the desired levels. Thus, a bilayered core-in-cup buccoadhesive tablet was formulated that immediately releases olmesartan, to give a burst effect, and controls azelnidipine rel...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-019-1575-9
更新日期:2019-12-10 00:00:00
abstract::Hypertension remains a significant risk factor for several cardiovascular disorders including coronary artery disease and heart failure. Despite the large armamentarium of drugs available for the management of high blood pressure, low oral availability is an ongoing challenge. Researchers are constantly developing alt...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章,评审
doi:10.1208/s12249-019-1583-9
更新日期:2020-01-06 00:00:00
abstract::Atropine sulfate (AS) fast-disintegrating sublingual tablets (FDSTs) were tested for AS sublingual permeation's feasibility as a potential alternative dosage form to treat organophosphates (OP) toxicity. More than 12,000 OP pesticide toxicity cases were reported in the USA from 2011 to 2014. AS is the recommended anti...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-019-1420-1
更新日期:2019-06-21 00:00:00
abstract::Loteprednol etabonate (LE) is a soft corticosteroid that maintains therapeutic activity with much reduced adverse effects. Yet, its ocular bioavailability is hindered by its poor aqueous solubility. Early attempts of LE complexation with cyclodextrins (CDs) did not involve the study of the effects of various complexat...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-016-0589-9
更新日期:2017-05-01 00:00:00
abstract::The present investigation was aimed at developing and optimizing a simple aqueous tablet-coating formulation and its process. 5-Fluorouracil (5-FU) was used to ascertain the relative lipophilic/hydrophilic behavior of the coating system. Optimization was performed by evaluating the adhesive force strength and cohesive...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-012-9763-x
更新日期:2012-06-01 00:00:00
abstract::The aim of this study was to develop and evaluate a floating multiparticulate gastroretentive system for the modified release of zidovudine (AZT). AZT was used as a model drug water-soluble at therapeutic doses. The floating gastroretentive system was obtained by co-precipitation, after solvent diffusion and evaporati...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-011-9627-9
更新日期:2011-06-01 00:00:00
abstract::The effects of solvent [acetonitrile, methanol, and acetonitrile/water mixture (20:80, v/v)], buffer concentration (phosphate buffer, pH 7.5), ionic strength and commonly employed adjuvants on the photodegradation of betamethasone-17 valerate in cream and gel formulations have been studied on exposure to UV light (300...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-012-9902-4
更新日期:2013-03-01 00:00:00
abstract::Cationic liposomes have long been used as non-viral vectors for small interfering RNA (siRNA) delivery but are associated with high toxicity, less transfection efficiency, and in vivo instability. In this investigation, we have developed siRNA targeted to RRM1 that is responsible for development of resistance to gemci...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-014-0193-9
更新日期:2014-12-01 00:00:00
abstract::The aim of this work was to test innovative approach for enhancing ascorbyl palmitate stability in microemulsions for topical application by addition of newly synthesized co-antioxidant 4-(tridecyloxy)benzaldehyde oxime (TDBO) and to investigate its antioxidant activity and finally to evaluate cytotoxicity of TDBO-loa...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-010-9507-8
更新日期:2010-09-01 00:00:00
abstract::Pharmaceutical aerosols have been targeted to the lungs for the treatment of asthma and pulmonary infectious diseases successfully. Micafungin (Astellas Pharma US, Deerfield, IL, USA) has been shown to be an effective antifungal agent when administrated intravenously. Pulmonary delivery of micafungin has not previousl...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-009-9185-6
更新日期:2009-01-01 00:00:00
abstract::The purpose of this study was to design and investigate the transdermal controlled release cubic phase gels containing capsaicin using glycerol monooleate (MO), propylene glycol (1,2-propanediol, PG), and water. Three types of cubic phase gels were designed based on the ternary phase diagram of the MO-PG-water system,...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-010-9481-1
更新日期:2010-09-01 00:00:00
abstract::Nanoparticles (NPs) containing the hydrophilic drug salidroside (Sal) and the hydrophobic drug tamoxifen (Tam) were prepared using a triblock copolymer poly(lactic-co-glycolic acid) (PLGA)-poly(ethylene glycol) (PEG)-PLGA to achieve synergism in the treatment of breast cancer. The double emulsion (w/o/w) method was us...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-019-1523-8
更新日期:2020-01-29 00:00:00
abstract::The effect of storage condition (% RH) on flufenamic acid:nicotinamide (FFA:NIC) cocrystal compressibility, compactibility, and tabletability profiles was not observed after visual evaluation or linear regression analysis. However, multivariate statistical analysis showed that storage condition had a significant effec...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-020-01712-1
更新日期:2020-07-07 00:00:00
abstract::The aim of this study was to develop benzydamine hydrochloride-loaded orodispersible films using the modification of a solvent casting method. An innovative approach was developed when the drying process of a small-scale production was used based on a heated inert base for casting the film. During this process, two ty...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-018-1088-y
更新日期:2018-08-01 00:00:00
abstract::The present study was designed to test the hypothesis that programmed cell death-1 (PD-1) siRNA can downregulate PD-1 expression in macrophages in culture and in tumor tissues in mice and inhibit tumor growth in a mouse model. PD-1 siRNA was encapsulated in solid lipid nanoparticles (SLNs), and the physical properties...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-021-01933-y
更新日期:2021-01-31 00:00:00
abstract::Development of age-appropriate formulation suitable for pediatric and geriatric patients involves various challenges. The objective of this research was to develop extended-release oral flexible tablet (ER-OFT) formulation using carbamazepine (CBZ) as model drug for pediatric and geriatric compliance. ER-microparticle...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-017-0715-3
更新日期:2017-10-01 00:00:00
abstract::Nucleic acid-based therapeutics present huge potential in the treatment of pulmonary diseases ranging from lung cancer to asthma and chronic pulmonary diseases, which are often fatal and widely prevalent. The susceptibility of nucleic acids to degradation and the complex structure of lungs retard the effective pulmona...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章,评审
doi:10.1208/s12249-018-1183-0
更新日期:2018-11-01 00:00:00
abstract::The purpose of the current study was to mask the taste of cetirizine HCl and to incorporate the granules produced in oral disintegrating tablets (ODT). The bitter, active substance was coated by fluidized bed coating using Eudragit® RL30-D at levels between 15% and 40% w/w. The ODTs were developed by varying the ratio...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-010-9569-7
更新日期:2011-03-01 00:00:00
abstract::Onychomycosis is a chronic disorder that is difficult to manage and hard to eradicate with perilous trends to relapse. Due to increased prevalence of HIV, use of immunosuppressant drugs and lifestyle-related factors, population affected with fungal infection of nail (Onychomycosis) happens to increase extensively in l...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章,评审
doi:10.1208/s12249-019-1591-9
更新日期:2020-01-14 00:00:00