Abstract:
BACKGROUND:To our knowledge, quantification of intranasal deposition of aerosol generated by Accuspray(™) (AS) in children has never been published. We hypothesized that deposition would vary significantly with age and with placement of the device within, or outside, of the nostril. METHODS:We tested these hypotheses in anatomically-correct physical models based on CT scans of 2-, 5-, and 12-year-old children with normal, intranasal airways. Models included a removable anterior nose (AN) with exterior facial features and interior nasal vestibule and nasal valve area and a main nasal airway (MNA), subdivided into upper (superior turbinates and olfactory area), middle (middle turbinates), and lower (inferior turbinates and nasopharynx) thirds. Aerosol was generated from distilled water admixed with (99m)technetium pertechnetate and administered during static airflow by AS inserted inside the right nostril (eight runs/model), or outside the right nostril (six runs/model). Mean aerosol Dv(50) ± standard deviation was 67.8 ± 24.7 μm. Deposition was quantified by 2D gamma scintigraphy and expressed as percentage of the emitted dose. RESULTS:When placed inside the nostril, mean (± standard deviation) deposition within the MNA was significantly less in the 2-year-old, compared to the 5- and 12-year-old, averaging 46.8 ± 33.8% (AN:55.4 ± 29.9%), 75.4 ± 26.7% (AN:23.3 ± 13.6%), and 72.1 ± 18.5% (AN:25.8 ± 18.5%), respectively (p<0.05). When placed outside the nostril, MNA was significantly less in the 2- and 5-year-old compared to the 12-year-old, with 1.4 ± 2.5% (AN:69.7 ± 40.7%), 7.4 ± 9.0% (AN:77.8 ± 32.8%), and 21.1 ± 29.1% (AN:29.2 ± 19.3%), respectively (p<0.05). Deposition in the MNA of all age models was highest when AS was placed inside the nostril (p<0.05). Deposition in the lower third was significantly increased for the 5- and 12-year-old and in the middle third of the 5-year-old when AS was placed inside the nostril. CONCLUSIONS:These results indicate that age and device placement play important roles in terms of intranasal deposition, when administering aerosol with Accuspray(™) to children.
journal_name
J Aerosol Med Pulm Drug Delivjournal_title
Journal of aerosol medicine and pulmonary drug deliveryauthors
Laube BL,Sharpless G,Vikani AR,Harrand V,Zinreich SJ,Sedberry K,Knaus D,Barry J,Papania Mdoi
10.1089/jamp.2014.1174subject
Has Abstractpub_date
2015-10-01 00:00:00pages
320-33issue
5eissn
1941-2711issn
1941-2703journal_volume
28pub_type
杂志文章abstract:BACKGROUND:Inhaled alpha1-antitrypsin (AAT) is being developed for treatment of cystic fibrosis to protect the lungs from excessive free elastase. High drug costs mandate a very efficient aerosol system to deliver a high payload to the airways. The I-neb Adaptive Aerosol Delivery (AAD) System is a portable, electronic,...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2009.0793
更新日期:2010-04-01 00:00:00
abstract::The use of gamma camera imaging following the inhalation of a radiolabel has been widely used by researchers to investigate the fate of inhaled aerosols. The application of two-dimensional (2D) planar gamma scintigraphy and single-photon emission computed tomography (SPECT) to the study of inhaled aerosols is discusse...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章,评审
doi:10.1089/jamp.2011.0960
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND:Model predictions of regional deposition in the respiratory tract are useful in assessing factors that influence the effectiveness of aerosol delivery. Regional deposition models have previously been coupled with models of mucous production and clearance to estimate initial concentrations of drug deposited i...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2017.1377
更新日期:2018-02-01 00:00:00
abstract:BACKGROUND:Mechanically ventilated patients commonly suffer from ventilator-associated pneumonia, hypoxemia, and other lower respiratory tract infection as a result of pathogen colonization and poor sputum clearance. Consequently, there is a high rate of morbidity and mortality in these patients. Dry powder mannitol in...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2016.1320
更新日期:2017-04-01 00:00:00
abstract:BACKGROUND:The unit dose dry powder inhaler (UD-DPI) is being considered as an alternative inhaler platform that, if developed, has the potential to improve access to inhaled respiratory medicines in developing countries. AIM:This study compared the systemic exposure of fluticasone furoate after delivery from the UD-D...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章,随机对照试验
doi:10.1089/jamp.2016.1322
更新日期:2017-10-01 00:00:00
abstract:BACKGROUND:Understanding the regional partition of deposition of inhaled particles within the lung is important for improving targeted delivery of inhaled aerosolized drugs. One factor affecting regional deposition is gravity. As the lung deforms under its own weight, changes in lung volume, in airway geometries, and i...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2014.1189
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:The effectiveness of metered-dose inhalers (MDIs) in delivering medication to the lungs highly depends on its correct usage technique. Current guidelines state optimal technique for high lung deposition should include a slow inhalation (>5 seconds) at an inspiratory flow rate of 30 L/min and inhaler actuatio...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2015.1278
更新日期:2017-08-01 00:00:00
abstract:: Background: Many countries have introduced a compulsory use of community masks for certain public areas during the SARS-CoV-2 pandemic. Different manufacturers offer reusable community masks in large quantities. The efficacy of these masks, however, is unknown. ...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2020.1635
更新日期:2020-09-23 00:00:00
abstract::The present study aimed at assessing the pharmacokinetics (PK) and safety pharmacodynamics (PD) of 24 microg formoterol delivered via a Novolizer and via an Aerolizer in healthy subjects. This was a randomized, open-label, crossover study. Beside PK, serum potassium, and glucose profiles, vital signs, and ECG were rec...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章,随机对照试验
doi:10.1089/jamp.2008.0690
更新日期:2008-09-01 00:00:00
abstract:BACKGROUND:Very little is known about the role of nasal morphology due to ethnic variation on particle deposition pattern in the sinonasal cavity. This preliminary study utilizes computational fluid dynamics (CFD) modeling to investigate sinonasal airway morphology and deposition patterns of intranasal sprayed particle...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2014.1205
更新日期:2016-04-01 00:00:00
abstract:PURPOSE:Many methods have been developed to evaluate dry powder inhalation techniques and their efficiency for disease control in asthma patients. However, it is difficult to apply these methods to clinical practice and research. In this study, we introduce a simple new method that can be applied to dry powder inhalati...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2014.1193
更新日期:2016-10-01 00:00:00
abstract::Antibiotic-resistant bacterial infections have renewed interest in finding substitute methods of treatment. The purpose of the present in vitro study was to investigate the possibility of respiratory delivery of a Burkholderia cepacia complex (BCC) bacteriophage by nebulized aerosol administration. Bacteriophages in i...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2008.0701
更新日期:2008-12-01 00:00:00
abstract::Since the early 1960s, there has been a continuous evolution in scientific understanding regarding bioequivalence (BE) of oral dosage forms, intermittently punctuated by some breakthrough research findings and conceptual advances. The accumulated knowledge from this body of research has been translated into a sophisti...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章,评审
doi:10.1089/jamp.2014.1144
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND:To validate the 'Test of Adherence to Inhalers' (TAI), a 12-item questionnaire designed to assess the adherence to inhalers in patients with COPD or asthma. METHODS:A total of 1009 patients with asthma or COPD participated in a cross-sectional multicenter study. Patients with electronic adherence ≥80% were ...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章,多中心研究
doi:10.1089/jamp.2015.1212
更新日期:2016-04-01 00:00:00
abstract:BACKGROUND:Spiromax(®) is a novel dry powder inhaler for patients with asthma or chronic obstructive pulmonary disease (COPD). The studies presented here provide further data on attributes (in vitro dosing consistency with budesonide-formoterol (DuoResp) Spiromax; flow rates through empty versions of the Spiromax and T...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2015.1216
更新日期:2015-10-01 00:00:00
abstract:BACKGROUND:Researchers, using checklists, have identified that 30%-90% of patients make errors in inhaler use. It is not certain whether these errors affect the delivery of medication. We have developed an electronic monitor (INCA™) that records audio each time an inhaler is used, providing objective information on inh...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2016.1334
更新日期:2017-08-01 00:00:00
abstract::The available toxicity data of benzalkonium chloride (BKC) clearly shows that it is toxic; however, the weight of evidence favors the view that at doses encountered in nasally and orally inhaled pharmaceutical preparations it is well tolerated. The adverse toxicological data predominantly come from in vitro and animal...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章,评审
doi:10.1089/jamp.2017.1390
更新日期:2018-02-01 00:00:00
abstract:BACKGROUND:The Respimat Soft Mist Inhaler is reported to generate an aerosol with low spray momentum and a small droplet size. However, the transport characteristics of the Respimat aerosol are not well understood. The objective of this study was to characterize the transport and deposition of an aerosol emitted from t...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2008.0708
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND:Preclinical evaluation of new chemical entities (NCEs) designed to be administered by inhalation route requires lung administration to rodents, especially in the discovery phase. Different administration methods have been used until now, but more efforts are required to obtain controlled and reproducible lun...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2017.1369
更新日期:2018-02-01 00:00:00
abstract:: Background: Salvia miltiorrhiza polyphenolic acid (SMPA) is effective in the treatment of cardiovascular diseases and currently it is administered orally or intravenously. However, SMPA is poorly absorbed orally and quickly eliminated in vivo. A long-term frequent intraveno...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2019.1538
更新日期:2020-04-01 00:00:00
abstract::Exhaled breath condensate (EBC) consists mainly of water, but also contains semivolatile and nonvolatile compounds. The aim of this study was to develop a system in which two condensers are simultaneously used in series to clarify the mechanisms of EBC condensation. Two aliquots of EBC (EBC1 and EBC2) were collected f...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2007.0644
更新日期:2008-03-01 00:00:00
abstract::Upper respiratory tract infections (URTIs), primarily acute rhinopharyngitis, tonsillitis, adenoiditis, and rhinosinusitis (RS), are major causes of morbidity in both children and adults of any age. In addition to the frequent occurrence of related medical problems and the associated socioeconomic costs, URTIs have a ...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章,评审
doi:10.1089/jamp.2016.1300
更新日期:2017-02-01 00:00:00
abstract::The success of inhalation therapy is not only dependent upon the pharmacology of the drugs being inhaled but also upon the site and extent of deposition in the respiratory tract. Similarly, the toxicity of environmental and industrial particulate matter is affected not only by the nature of the dust but also by the am...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2020.29029.cd
更新日期:2020-08-01 00:00:00
abstract:OBJECTIVES:This experimental study was conducted to determine the effects of training on inhaler technique and quality of life in patients with chronic obstructive pulmonary disease (COPD). METHODS:Among the patients who applied at the outpatient clinic of chest diseases between March 2009 and May 2010, a total of 69 ...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章,随机对照试验
doi:10.1089/jamp.2012.1017
更新日期:2013-12-01 00:00:00
abstract:BACKGROUND:The delivery of antitubercular drugs through direct lung targeting can lead to reduction in the dose as well as side effects of the drug. In the present investigation, carrier (lactose)-based dry-powder inhaler of rifampicin was prepared to achieve direct targeting of the drug into the lungs. METHODS:The dr...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2017.1379
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND:Secondary lung infections are the primary cause of morbidity associated with cystic fibrosis lung disease. Aerosolized antibiotic inhalation is potentially advantageous but has limited effectiveness due to altered airway aerodynamics and deposition patterns that limit drug access to infected regions. One pot...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2017.1412
更新日期:2018-08-01 00:00:00
abstract:BACKGROUND:Predicting local lung tissue pharmacodynamic (PD) responses of inhaled drugs is a longstanding challenge related to the lack of experimental techniques to determine local free drug concentrations. This has prompted the use of physiologically based pharmacokinetic (PBPK) modeling to potentially predict local ...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2017.1436
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND:The site of deposition in the respiratory tract for aerosolized, inhaled therapeutic drugs depends on both the particles' aerodynamic size and the patient's breathing pattern. METHODS:In 21 healthy subjects with normal lung function, we evaluated an extremely slow inhalation of a large 9.5-μm MMAD particle ...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2008.0711
更新日期:2010-12-01 00:00:00
abstract:: Background: Many substances used in inhalation research are water soluble and can be administered as nebulized solutions. Typical examples are therapeutic, small-molecular agents, or macromolecules. Another category is a number of water-soluble agents used for airway diagn...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2019.1554
更新日期:2020-04-01 00:00:00
abstract:BACKGROUND:Computer modeling is used to predict inhaled aerosol deposition in the lung based on definition of the aerosol characteristics and the breathing pattern and airway anatomy of the subject. Validation of the models is limited by the lack of detailed experimental data. Three-dimensional imaging provides an oppo...
journal_title:Journal of aerosol medicine and pulmonary drug delivery
pub_type: 杂志文章
doi:10.1089/jamp.2014.1191
更新日期:2015-12-01 00:00:00