Read by QxMD icon Read


Justin Yong Soon Tay, Celine Valeria Liew, Paul Wan Sia Heng
Dissolution testing for inhalers were previously conducted either on unfractionated drug-carrier powders or drug of specific aerodynamic particle size. In this study, the collection of the full fine particle fraction (FPF) was attempted on a single stage. Capsules containing 30 mg of 2% salbutamol sulfate (SS) was tested to have a FPF of 9 ± 1% using the full set of Andersen cascade impactor (ACI) and a modified Rotahaler® capable of achieving 4.0 kPa pressure drop at 60 L/min air flow rate. A truncated ACI comprising the USP throat, pre-separator, stage 0, stage 4, stage F, polytetrafluoroethylene funnel (TF) and small collection plate (sCP) was found to be capable of achieving a FPF of 9% collected on TF and sCP...
April 21, 2018: International Journal of Pharmaceutics
Merja Kirjavainen, Leena Mattila, Mikko Vahteristo, Jani Korhonen, Satu Lähelmä
BACKGROUND: Easyhaler® dry powder inhaler (DPI) containing salmeterol and fluticasone propionate was developed for the treatment of asthma and chronic obstructive pulmonary disease. Three different Salmeterol/fluticasone Easyhaler test products (Orion Pharma, Finland) were compared against the reference product Seretide® Diskus® DPI (GlaxoSmithKline, United Kingdom) to study whether any of the test products are bioequivalent with the reference. METHODS: Open and randomized pharmacokinetic four-period crossover study on 65 healthy volunteers was performed in a single center to compare the lung deposition and total systemic exposure of salmeterol and fluticasone propionate after administration of single doses (two inhalations of 50/500 μg/inhalation strength) in fasting conditions...
March 1, 2018: Journal of Aerosol Medicine and Pulmonary Drug Delivery
M W Jetzer, B D Morrical, M Schneider, S Edge, G Imanidis
The in-vitro aerosol performance of two combination dry powder inhaler (DPI) products, Foster® NEXThaler® and Seretide® Diskus® were investigated with single particle aerosol mass spectrometry (SPAMS). The in-vitro pharmaceutical performance is markedly different for both inhalers. Foster® NEXThaler® generates a higher fine particle fraction (FPF <5 μm) and a much higher relative extra fine particle fraction (eFPF <2 μm). In terms of the composition of the aerodynamic particle size distribution (APSD), it could be verified with SPAMS that overall Foster® NEXThaler® emits a significantly higher number of fine and extra fine particles with a median aerodynamic diameter (MAD) of 2...
March 1, 2018: International Journal of Pharmaceutics
Hui Wang, Pallavi Bhambri, James Ivey, Reinhard Vehring
A new low-flow-rate (0.5L/min) single-nozzle impactor for the concentration of dilute aerosol particles with selected pharmaceutical applications is described in this paper. The impactor can be configured up to 11 stages with a wide range of cutoff diameters from 0.6μm to 21.1μm, enabling convenient sampling of inhalable drug particles from inhalation devices and drug production processes. Its unique single-nozzle design and removable impaction plate allow direct sample transfer for subsequent compositional, morphological, solid-state, and other analysis...
November 25, 2017: International Journal of Pharmaceutics
Martin W Jetzer, Bradley D Morrical, David P Fergenson, Georgios Imanidis
Particle co-associations between the active pharmaceutical ingredients fluticasone propionate and salmeterol xinafoate were examined in dry powder inhaled (DPI) and metered dose inhaled (MDI) combination products. Single Particle Aerosol Mass Spectrometry was used to investigate the particle interactions in Advair Diskus(®) (500/50 mcg) and Seretide(®) (125/25 mcg). A simple rules tree was used to identify each compound, either alone or co-associated at the level of the individual particle, using unique marker peaks in the mass spectra for the identification of each drug...
August 31, 2017: International Journal of Pharmaceutics
Hui Wang, David Barona, Sulayman Oladepo, Lisa Williams, Susan Hoe, David Lechuga-Ballesteros, Reinhard Vehring
A new macro-Raman system equipped with a motorized translational sample stage and low-frequency shift capabilities was developed for bulk composition and homogeneity analysis of multi-component pharmaceutical powders. Different sampling methods including single spot and scanning measurement were compared. It was found that increasing sample volumes significantly improved the precision of quantitative composition analysis, especially for poorly mixed powders. The multi-pass cavity of the macro-Raman system increased effective sample volumes by 20 times from the sample volume defined by the collection optics, i...
July 15, 2017: Journal of Pharmaceutical and Biomedical Analysis
Rafał Ludwikowski, Tadeusz Płusa, Paweł Bijoś
The clinical efficacy of inhaled therapy in patients with asthma and COPD is dependent on the choice of inhaler and proper use of it. The need to instruct patients in the use of the recommended inhaler seems obvious, but in clinical practice is not always followed. AIM: The aim of the study was the comparative evaluation of the selection criteria and the method of instructing in operating the device in asthma and COPD patients. MATERIALS AND METHODS: The study was conducted in 80 patients with asthma and COPD in 9 European countries: France, Germany, Italy, Spain, Great Britain, Holland, Belgium, Denmark, Sweden...
December 22, 2016: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
Hamidreza Abtahi, Soheil Peiman, Morteza Foroumandi, Enayat Safavi
Bronchiolitis obliterans (BO) is the most remarkable pulmonary sequels of war-related sulfur mustard inhalation. There is little if any data about long-term efficacy of associated BO treatment. Five years spirometric records of three groups of patients with obstructive pulmonary diseases (asthma, COPD, BO) and documented sulfur mustard inhalation were evaluated. The BO patients were treated with inhaled Seretide 125-250/25 (2 puffs BID), azithromycin (250 mg, three times/week) and N-acetylcysteine (1200-1800/day)...
September 2016: Acta Medica Iranica
Bruce G Bender, Ramon A Hernandez Vecino, Kevin McGrath, Spencer Jones
BACKGROUND: Low adherence and persistence to inhaled therapy result in poor outcomes in patients with asthma and chronic obstructive pulmonary disease (COPD). Although adherence has been widely studied, growing awareness of the large number of patients who abandon their asthma treatment suggests that persistence to treatment may be more relevant for longer term outcomes. OBJECTIVE: The objective of this study was to compare persistence to salmeterol/fluticasone propionate combination treatment as AirFluSal Forspiro with persistence to Seretide Diskus in patients with asthma or COPD aged 12 years and above...
September 2016: Journal of Allergy and Clinical Immunology in Practice
Eleftherios Zervas, Konstantinos Samitas, Mina Gaga
BACKGROUND: Poor adherence to inhaled therapy is common in patients with asthma and COPD. An inhaler selection based on patients' preference could be beneficial to adherence and treatment effectiveness. Properly designed questionnaires can assess patients' satisfaction with their medication devices. The aim of this study was to estimate, using the Feeling of Satisfaction with Inhaler (FSI-10) questionnaire, the ease of use and satisfaction of patients regarding three different marketed dry powder inhalers (DPIs): Diskus(®) (DK), Elpenhaler(®) (EH), and Turbuhaler(®) (TH)...
2016: International Journal of Chronic Obstructive Pulmonary Disease
Sha-Sha Yin, Hong Liu, Xing Gao

Objective: Our study aims to explore the correlation between fractional exhaled nitric oxide (FeNO) and inhaled corticosteroids (ICS) efficacy in childhood bronchial asthma (BA). METHODS: 247 pediatric BA patients were selected and divided into 3 treatment groups based on drug therapy: treatment group 1 (seretide, n = 86), treatment group 2 (budesonide, n = 79), and treatment group 3 (salbutamol, n = 82). Another 90 healthy children were recruited as control group. FeNO, FEV1%pred, FEV1/FVC, MEF25%, MEF50% and PEF%, total serum IgE, EOS%, induced sputum EOS% and supernatant inflammatory indexes (ECP, IL-8, and TNF-α) of sputum, ECP, IL-8 and TNF-α were detected...
January 2017: International Journal of Clinical Pharmacology and Therapeutics
Andrzej Emeryk, Rabih Klink, Tammy McIver, Prashant Dalvi
OBJECTIVES: The present study was conducted to assess the efficacy, safety and tolerability of fluticasone propionate/formoterol fumarate combination therapy (FP/FORM; Flutiform®) compared with fluticasone propionate/salmeterol xinafoate (FP/SAL; Seretide® Evohaler®) in children with asthma. METHODS: This was an open-label, randomized, controlled, phase III trial and extension. Patients aged 4-12 years with reversible asthma [% predicted forced expiratory volume in 1 second (FEV1) 60-100%; documented reversibility of ⩾15% in FEV1] were randomized to receive FP/FORM (100/10 µg b...
August 2016: Therapeutic Advances in Respiratory Disease
Si-Ju Gao, Yun-Peng Ge, Chun-Juan Zhang
To investigate correlation between fractional exhaled nitric oxide (FeNO) levels and efficacy of inhaled corticosteroids in children with bronchial asthma. Between October 2013 and December 2014, 133 cases of children with bronchial asthma were randomly divided into the glucocorticoid group (n = 67; inhaled with Seretide/Pulmicort) and the nonglucocorticoid group (n = 66; inhaled with short-acting β2 receptor agonist if needed); and alternatively 72 cases of healthy children were regarded as the control group...
March 17, 2016: American Journal of Therapeutics
Ágnes Jókay, Árpád Farkas, Péter Füri, Alpár Horváth, Gábor Tomisa, Imre Balásházy
Asthma is a serious global health problem with rising prevalence and treatment costs. Due to the growing number of different types of inhalation devices and aerosol drugs, physicians often face difficulties in choosing the right medication for their patients. The main objectives of this study are (i) to elucidate the possibility and the advantages of the application of numerical modeling techniques in aerosol drug and device selection, and (ii) to demonstrate the possibility of the optimization of inhalation modes in asthma therapy with a numerical lung model by simulating patient-specific drug deposition distributions...
June 10, 2016: European Journal of Pharmaceutical Sciences
Yilin Xie, Wenrong Wan, Yinlong Zhao, Junjie Xie, Qiuyan Wu
OBJECTIVE: To compare the difference in clinical efficacy on bronchial asthma at chronic persistent stage between acupuncture for warming yang and benefiting qi and seretide. METHODS: One hundred and eighty patients of bronchial asthma at chronic persistent stage were randomized into an acupuncture group and a western medication group, 90 cases in each one. In the acupuncture group, acupuncture for warming yang and benefiting qi was applied at Dazhui (GV 14), Feishu (BL 13), Danzhong (CV 17), Dingchuan (EX-B 1), Jianshi (PC 5), Zhigou (TE 6), Taixi (KI 3) and Zusanli (ST 36), once every two days...
November 2015: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
Jin Lee, Matthew Machin, Kirsty E Russell, Stelios Pavlidis, Jie Zhu, Peter J Barnes, Kian F Chung, Ian M Adcock, Andrew L Durham
We investigated changes in gene expression that occur in chronic obstructive pulmonary disease (COPD) after corticosteroid treatment and sought to identify the mechanisms that regulate these changes. Biopsy samples were taken from patients with COPD (Global Initiative for Chronic Obstructive Lung Disease stage I to II) before and after treatment with fluticasone propionate (FP)/salmeterol (SM) (50/500, 4 wk). Gene expression was measured by microarray and was confirmed by real-time reverse transcription-quantitative PCR (RT-qPCR)...
May 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Francesca Buttini, Gaetano Brambilla, Diego Copelli, Viviana Sisti, Anna Giulia Balducci, Ruggero Bettini, Irene Pasquali
BACKGROUND: European and United States Pharmacopoeia compendial procedures for assessing the in vitro emitted dose and aerodynamic size distribution of a dry powder inhaler require that 4.0 L of air at a pressure drop of 4 kPa be drawn through the inhaler. However, the product performance should be investigated using conditions more representative of what is achievable by the patient population. This work compares the delivered dose and the drug deposition profile at different flow rates (30, 40, 60, and 90 L/min) of Foster NEXThaler(®) (beclomethasone dipropionate/formoterol fumarate), Seretide(®) Diskus(®) (fluticasone propionate/salmeterol xinafoate), and Symbicort(®) Turbohaler(®) (budesonide/formoterol fumarate)...
April 2016: Journal of Aerosol Medicine and Pulmonary Drug Delivery
Anne H de Boer, Doetie Gjaltema, Paul Hagedoorn, Henderik W Frijlink
There is increasing interest in the use of so-called 'extrafine' aerosols to target the small airways in the management of asthma and COPD. Using previously presented deposition data, we assessed whether submicron (<1μm) particles can improve central and deep lung deposition. Our data show instead that particles in the range 1-3μm are much more relevant in this respect. Based on this finding the Symbicort Turbuhaler, Seretide Diskus, Rolenium Elpenhaler and Foster (Fostair) NEXThaler ICS/LABA combination DPIs were tested in vitro as a function of the pressure drop (2, 4 and 6kPa) across the inhaler...
October 2015: European Journal of Pharmaceutics and Biopharmaceutics
Sharon Shui Yee Leung, Patricia Tang, Qi Tony Zhou, Zhenbo Tong, Cassandra Leung, Janwit Decharaksa, Runyu Yang, Hak-Kim Chan
The US pharmacopeia (USP) and Alberta throats were recently reported to cause further de-agglomeration of carrier-free powders emitted from some dry powder inhalers (DPIs). This study assessed if they have similar influences on commercially available carrier-based DPIs. A straight tube, a USP throat, and an Alberta throat (non-coated and coated) were used for cascade impaction testing. Aerosol fine particle fraction (FPF ≤ 5 μm) was computed to evaluate throat-induced de-agglomeration. Computational fluid dynamics are employed to simulate airflow patterns and particle trajectories inside the USP and Alberta throats...
November 2015: AAPS Journal
Jing Gong, Ning Chen, Xiao-mei Hao, Hui Li
OBJECTIVE: To explore the effect of Peitu Shengjin Recipe (PSR) on nutritional states and immune functions of stable phase chronic obstructive pulmonary disease (COPD) patients. METHODS: Totally 62 stable phase COPD patients were randomly assigned to the treatment group (30 cases) and the control group (32 cases). All patients inhaled Seretide (50/500 µg), twice per day. Besides, patients in the treatment group additionally received PSR, one dose per day. After three months of treatment, the COPD assessment test (CAT) score, the index of nutritional states [including body mass index (BMI) , thickness of skin fold (TSF), mid-arm muscle circumference (MAMC), serum albumin, serum prealbumin], and immune functions (including IgA, IgM, and IgG) were compared between the two groups...
May 2015: Chinese Journal of Integrated Traditional and Western Medicine
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"