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Essential fatty acids (EFA) deficiency has been often reported in patients with cystic fibrosis (CF), particularly in those homozygous for the DF508 mutation. Clinical symptoms of CF may be influenced by correcting EFA deficiency. Nevertheless, the value of EFA supplementation in CF remains controversial. Within this multicentric and international randomized placebo-controlled trial it will be evaluated, according to recommendations of Cochrane analysis, beneficial effects of an oral supplementation with polyunsaturated fatty acids on selected biochemical and functional outcome parameters such as inflammatory biomarkers, incorporation into cell membrane phospholipids, lung function, exercise tolerance, clinical and nutritional status and properties of transepithelial ion transport. The study will be undertaken in a cohort of CF patients aged over 6 years old (60 patients), homozygous for the DF508 mutation and treated by Azithromycine. Supplementation will be performed with a triglyceride source at a daily dose of 60 mg/kg of omega-3 polyunsaturated fatty acids (Omega 3 Premiumâ, Laboratoires Ponroy, France). Before enrolled into the trial and during the study, patients will undergo nutritional assessment by evaluation of total and fat dietary intake and overall calorie intake using a 3-days diet records and a food frequency questionnaire. Plasma and erythrocyte membrane EFA profiles and inflammatory markers will be monitored in baseline conditions, at 3, at 6 and 12 months after starting the treatment. Lung function will be performed at each patient visit and an exercise test will be done before and at the end of the treatment. Properties of ion transport will be searched by sweat testing before and at the end of the treatment.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
omega-3 triglycerides, Placebo
Hôpital Universitaire Des Enfants Reine Fabiola
Queen Fabiola Children's University Hospital
Published on BioPortfolio: 2014-08-27T03:20:02-0400
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An autosomal recessive genetic disease of the EXOCRINE GLANDS. It is caused by mutations in the gene encoding the CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATOR expressed in several organs including the LUNG, the PANCREAS, the BILIARY SYSTEM, and the SWEAT GLANDS. Cystic fibrosis is characterized by epithelial secretory dysfunction associated with ductal obstruction resulting in AIRWAY OBSTRUCTION; chronic RESPIRATORY INFECTIONS; PANCREATIC INSUFFICIENCY; maldigestion; salt depletion; and HEAT PROSTRATION.
A chloride channel that regulates secretion in many exocrine tissues. Abnormalities in the CFTR gene have been shown to cause cystic fibrosis. (Hum Genet 1994;93(4):364-8)
A strain of mice widely studied as a model for cystic fibrosis. These mice are generated from embryonic stem cells in which the CFTR (cystic fibrosis transmembrane conductance regulator) gene is inactivated by gene targeting. As a result, all mice have one copy of this altered gene in all their tissues. Mice homozygous for the disrupted gene exhibit many features common to young cystic fibrosis patients, including failure to thrive, meconium ileus, and alteration of mucous and serous glands.
A group of fatty acids, often of marine origin, which have the first unsaturated bond in the third position from the omega carbon. These fatty acids are believed to reduce serum triglycerides, prevent insulin resistance, improve lipid profile, prolong bleeding times, reduce platelet counts, and decrease platelet adhesiveness.
FATTY ACIDS which have the first unsaturated bond in the sixth position from the omega carbon. A typical American diet tends to contain substantially more omega-6 than OMEGA-3 FATTY ACIDS.
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