View clinical trials related to Polymorphism.
Filter by:In this multicentric controlled study, we aims to evaluate effect of caffeine on mental performances during a sleep deprivation protocol. Genetic polymorphisms are considered as a covariable.
Screening of a population of volunteer workers recruited on the occasion of their occupational health visit, within the Ministry of Defense and civil enterprises. The voluntary subjects included will, after signing a consent, take a saliva sample (Kit Oragen DNA OG500) and fill out a computerized questionnaire. A posteriori, the genotyping polymorphisms may be associated with variations in the pharmacokinetics or pharmacodynamics of caffeine will be achieved. The primary objective is to determine whether polymorphisms (alone or in combination) of genes associated with the pharmacokinetics or pharmacodynamics of caffeine are independent risk factors for sleep disorders. The secondary objectives are to determine the frequency of these polymorphisms and to evaluate the consequences of these associations on sleep habits (sleep time, chronotype, quality of sleep), daytime sleepiness, caffeine consumption, antecedents of accidents at work or traffic, drug consumption ...
Background: Respiratory diseases affect more than 1 billion people worldwide. They are a growing public health concern. The lungs are constantly exposed to environmental factors such as dust, fumes, microbes, and pollutants. But much is still not known about how these pollutants lead to respiratory illnesses. Researchers want to collect samples from lungs and blood to see how genetics and environmental pollutants affect cellular responses or functioning. Objectives: To study how cytochrome P450 epoxygenase pathway enzymes affect macrophage function in the lungs and inflammatory responses. Eligibility: Adults ages 18 65 who can have a bronchoscopy. Design: All study visits will take place at the NIEHS Clinical Research Unit in Research Triangle Park, NC. At study visit 1, participants will be screened with medical history and physical exam. They will have blood and urine tests. They will take tests that measure their lung function. They will answer questionnaires. Before the visit, they will be given a list of medicines they cannot take. They also must not have caffeine on the day of their visit. The visit will last about 3 hours. At study visit 2, participants will give blood samples. They will undergo bronchoscopy. For this, they will get an intravenous line in a vein to get sedatives. Their airways will be numbed. Cells will be collected from their lungs. They will fast for 8 hours before the visit. They must have someone else drive them home from the visit. The visit will last about 3-4 hours. Participants will get a follow-up phone call about 1 day after study visit 2.
Fat tissue from omenta, thigh and abdomen taken under anesthesia on subjects undergoing laparoscopic surgery, cholecystectomy, reflux surgery or gastric by-pass (GBP). Are there any difference in polymorphids and/or mRNA expression in genes significant for developing obesity, between normal weight and obese individuals, with or without diabetes typ 2 . Are there any difference in polymorphids and/or mRNA expression in different types of fat tissue
COACT registry is a multicenter registry of consecutive patients undergoing coronary stent implantation at 8 centers in the Catholic University of Korea to evaluate the real world management of patients with coronary artery disease and to assess their in-hospital, medium and long-term outcomes.