View clinical trials related to Cystic Fibrosis.
Filter by:The purpose of this research is to determine how a person's lungs will uptake [18F]fluorodeoxyglucose (FDG), as measured with positron emission tomography (PET) scanning in young cystic fibrosis (CF) patients.
Serine proteases belonging to the elastase family are mainly responsible for lung tissue destruction as observed during cystic fibrosis. But anti-inflammatory therapies based on systemic or aerosolized protease-inhibitors administration, have not given the expected results until now. One reason would be the impaired access of therapeutic inhibitors to their molecular targets. It was recently shown that neutrophils actively secrete neutrophil extracellular traps (NETs) made of DNA that binds cationic proteases among other molecules. NETs together with DNA passively released from dead neutrophils contribute to the viscosity of CF expectorations which explains that rhDNase treatment fluidifies expectorations and improves the patient status. Preliminary experiments in our laboratory have shown that DNA degradation was associated with a significant increase of proteolytic activity in the sputum soluble fraction. However the efficacy of exogenous inhibitors is also improved in these conditions. Using the specific substrates and methodologies that we developed previously to measure cell-surface associated proteolytic activities, we will study the effects of DNase on the activity of individual proteases, their biodistribution in sputum and their regulation by potential therapeutic inhibitors. Enzymatic, immunochemical and microscopic (confocal and scanning) techniques will first be used for ex vivo studies on sputa freshly collected at the adult and paediatric CRCM in Tours, then on sputa from patients before and after administration of aerosolized rhDNase. We hypothesize that a better understanding of the biodistribution of neutrophil serine proteases and especially their binding to DNA will help designing new therapeutic strategies that facilitate inhibitor access to their protease targets.
Patients with cystic fibrosis (CF) suffer from chronic infections of the lower respiratory tract that can be caused by one or multiple bacteria, including Pseudomonas aeruginosa, which has been particularly problematic to eradicate and been implicated as the major cause of morbidity and mortality in CF patients. Aerosol delivery of antibiotics directly to the lung increases the local concentrations of antibiotic at the site of infection resulting in improved antimicrobial effects compared to systemic administration. Bacterial resistance to current aerosol antibiotic treatments indicate a need for improved therapies to treat CF patients with pulmonary infections caused by multi-drug resistant Pseudomonas aeruginosa and other bacteria. High concentrations of MP-376 delivered directly to the lung are projected to have antimicrobial effects on even the most resistant organisms. MP-376 is a novel formulation of the fluoroquinolone levofloxacin that has been optimized for aerosol delivery using the PARI electronic eFlow® nebulizer. Preclinical and early clinical studies in adults show that aerosol doses of MP-376 appear to be safe and well tolerated, and exert an antimicrobial effect when administered once or twice daily. High concentrations of levofloxacin in the lung delivered using MP-376 are expected to be active against CF pathogens such as P. aeruginosa and S. aureus, including those resistant to aminoglycosides (such as TOBI®) and other inhaled antimicrobial agents. Inhaled MP-376 can be delivered rapidly and efficiently using the PARI eFlow® nebulizer system. This Phase 1 study is being performed to obtain safety, tolerability and PK data in children ages 6-16 in order to determine if MP-376 is safe, prior to enrolling children of these ages in the planned pivotal Phase 3 studies.
The purpose of this study is to compare the effect of three airway secretion clearance techniques (chest physical therapy, flutter device and high frequency chest wall oscillation) on decline in pulmonary function over a three year period in patients with cystic fibrosis.
Repeated measurements of lung water by single transpulmonary thermodilution during the first postoperative days following lung transplantation
The purpose of this study is to compare conventional breast imaging and diagnostic work-up (2 dimensional imaging) to digital breast tomosynthesis (3 dimensional imaging) in the appearance of non-calcified breast masses. It is thought that non-calcified breast masses will be better visualized with the new 3D technology.
This is a prospective, randomized clinical trial comparing the effects of these 2 modes of antibiotic treatment on BALF inflammation in young, P. aeruginosa-positive CF patients.
High frequency chest wall oscillation (HFCWO) has been shown to increase tracheal mucous clearance compared with control. These observations led to the development of 'The Vest' which is a non-stretchable jacket connected to an air-pulse generator and worn by the patient over the chest wall. The generator rapidly inflates and deflates 'The Vest' which gently compresses and releases the chest wall between 5 and 20 times per second. This generates mini-coughs which are said to dislodge mucus from the bronchial walls and to facilitate its movement up the airways. In addition 'The Vest' has been shown to reduce the viscosity of mucus and this should further enhance mucous clearance. The technique has, for many years, been widely used in the United States of America as an alternative to the European airway clearance regimens of the active cycle of breathing techniques, autogenic drainage, positive expiratory pressure and oscillating positive expiratory pressure, but 'The Vest' has only recently been registered for use in Europe. It is important that the airway clearance regimen of 'The Vest' be compared with the alternative airway clearance regimens widely used in Europe. Hypothesis: In people with cystic fibrosis 'The Vest' will lead to the expectoration of an increased weight of sputum during treatment sessions compared with alternative airway clearance regimens.
This study is a preliminary study designed to determine the safety and effectiveness of HFCWO using the InCourage vest system as an airway clearance technique for the treatment of CF. The study will compare HFCWO to the most commonly used airway clearance technique in Canada, namely the Positive Expiratory Pressure technique in patients with CF over a period of one year. As this is a preliminary study, it will not be able to determine if the vest is equivelant to PEP, but will provide the information needed to plan a larger study to answer that question.
The purpose of this study is to determine the effect of AZD1236 in patients with cystic fibrosis (CF) on inflammatory biomarkers in induced sputum, after a treatment period of 4 weeks.