There are about 36633 clinical studies being (or have been) conducted in France. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
An increase in the prevalence of infections due to non-tuberculous mycobacteria (NTM) is observed in many countries and recent data suggest the circulation of dominant clones with a possibility of human-to-human contamination. The hypothesis is made that these infections are also increasing in France and that dominant NTM clones are circulating. The last French study carried out in 2004 already showed prevalences of up to 10% in certain French regions. It is essential to know the prevalence 8 years later, taking advantage of the new recommendations for the management of patients and samples, which will homogenize practices on French territory. No data are currently available in France on the prevalence of positive serological responses in cystic fibrosis patients. Serological analyzes of the sera collected during this study will enable us to evaluate the performance of serology in mycobacterial culture and to identify patients with no positive respiratory specimen in culture but with positive serology indicating potential contact with a mycobacterium. The establishment of a serological follow-up of these patients will allow to correlate this result with a clinical evolution and / or the detection of NTM in subsequent samples. Serology is an innovative aspect of the CIMENT study.
the investigators hypothesize that some of these polymorphisms contribute to VTE risk in women using COC, and that their screening could to help assess individual risk of VTE before COC prescription. In order to test this hypothesis the investigators propose to build a predictive score for VTE in women using COC based on clinical and biological factors. To this end the investigators have a large case study (including 766 patients) recruited at the "Centre d'Exploration des Pathologies Hémorragiques et Thrombotiques" (CEHT) of the laboratory of Hematology (La Timone Hospital, Marseille) between 2003 and 2013. The cases had a personal history of documented VTE while using COC (PILGRIM study). A great number of clinical and biological relevant phenotypes in the field of VTE have already been collected (including 14 polymorphisms selected on the basis of their biological plausibility and the existence association studies).To our knowledge it is the largest study specifically conducted in order to assess genetic factors associated with VTE in women using COC. These 766 cases will be compared to 766 controls from the general population (cohort Nutrinet-Santé). Then, the predictive values of the score will be assessed in an independent multicentric validation study that the investigators will set up in the field of this project. Our study should allow a better understanding of the genetic and environmental factors involved in VTE related to COC use. Besides, this project aims to respond to a major public health issue giving an effective tool for the decision of prescribing COC.
The NephoMIC project is a biological collection in patients of Nephrology, allowing the study of the links between kidney diseases, Immunity system and Cardiovascular complications. Its aim is to allow the development of a translational research on the theme of "Systemic Nephrology", which concerns both renal complications of autoimmune and inflammatory diseases, and systemic complications of patients with kidney disease, linked to both a state of immunosuppression and an increased risk of cardiovascular complications. It is based on the proximity between the Clinical investigation Center (CIC) of the hospital, where the samples are received, techniqued and preserved, and the Center of Nephrology and Renal Transplantation of the hospital. The collection includes blood samples (whole blood, serum, plasma, total blood RNA, PBMC cells), and urine samples (fresh urine). Participation in the collection is particularly recommended for patients who require a medical renal biopsy in the Nephrology Department. Other well-phenotyped patients (well-defined renal disease diagnosis) may also participate in NephroMIC.
Since 1991, idiopathic macular holes (MH) can benefit from an effective treatment initially involving pars plana vitrectomy, stripping of epiretinal membranes and intraocular gas tamponade followed by facedown positioning. The initial 58% success rate has further increased to 85-100% with internal limiting membrane (ILM) peeling. However, complete ILM removal has been shown to lead to anatomic changes causing the retina to have the appearance of a dissociated optic nerve fiber layer (DONFL). Moreover, it has been associated with decreased retinal sensitivity that may cause visual discomfort despite good visual acuity. Nawrocki et al. recently suggested to reduce the area of peeled ILM (temporal inverted ILM flap technique) in order to minimize iatrogenic trauma while maintaining satisfactory surgical outcomes. The aim of this study is to compare the incidence of DONFL appearance and retinal sensitivity after macular hole surgery in eyes that underwent temporal inverted ILM flap technique and eyes that had complete ILM peeling
The use of cosmetics is an important source of exposure to many chemicals including endocrine disruptors. Recently, national and international scientific recommendations have been issued to limit exposure to chemicals during pregnancy. However, the perception and the use of cosmetics by pregnant women is still little studied. The objectives of the PERICOS study are to identify the risk perception and the attitudes regarding cosmetic's use by the pregnant women. Understanding the risk perception, the knowledge, attitudes and expectations of women about the use of cosmetics during pregnancy will help to set up effective strategies to improve prevention of chemical exposure.
Acute leukaemias (AL) are the first cause of cancer in children, with a majority of B acute lymphoblastic leukemia (ALL). Some of the processes causing leukemogenesis are already identified and well characterized in some AL subtypes such as translocation t (12; 21) of good prognosis in ALL. However, translocations are not sufficient to explain all the different processes of leukemogenesis, and other processes such as genetic / epigenetic mutations leading to oncogene activation / inhibition of tumor suppressor genes are the object research. Among the latter, mutations in tumor suppressor genes such as DCC (Deleted in Colorectal Cancer) have recently been identified in solid cancers, such as in hemopathies. This gene was subsequently characterized as encoding a "dependence receptor" specifically binding to its Netrin-1 ligand. Dependence receptors (RDs) are transmembrane receptors that cause cell death in the absence of their ligand. RD decreases tumor progression and overexpression of their ligands is observed in many cancers, such as B lymphomatous hemopathies in adults. Inhibition of the RD-ligand interaction constitutes a new and original therapeutic target in oncology. The aim of this study is to investigate whether RDs, in particular DCC, are expressed in acute leukemia cells at the time of diagnosis or relapse in patients aged 1 to 18 years, and then in these patients at the time of the remission balance. This research will be both qualitative and quantitative.
The primary objective of this study is to determine whether patients usually taking Vitamin K Antagonists (VKAs) exhibit a poorer global cognitive performance than control patients (matched on age, gender and indication for anticoagulation) taking direct oral anticoagulants (DOACs). The secondary objectives are: - to determine whether patients usually taking VKAs are more likely to have moderate to severe cognitive disorders than matched controls taking DOACs. - to determine whether VKAs intake is associated with poorer executive functions. - to determine on CT scans whether the VKAs intake is associated with a greater volume of vascular calcifications in the brain compared to the use of DOACs.
Patient care in Medically Assisted Procreation (MAP) requires a close and regular monitoring of the evolution of the estradiol rate. This monitoring allows the dose and duration of treatment to be accurately adjusted for each woman (every 24 or 48 hours) up to 10 to 15 days of treatment with gonadotrophins. Oestradiol (E2) is secreted by the growing ovarian follicles and reflects their growth and maturity. Its plasma dosage makes it possible to monitor the ovarian response to stimulation. This monitoring involves several constraints amongst which disruption of work life, stress, fatigue that can alter the response to treatment
Venous thromboembolism (VTE) including deep vein thrombosis (DVT) and pulmonary embolism (PE) affects about 1,200,000 individuals each year in Europe. About 50% of VTE are unprovoked and 20% of these patients will face a recurrent event after the usual three to six‐month course of anticoagulant treatment. To date, most patients are given prolonged anticoagulant treatment. However, anticoagulant treatment are associated with a major risk of bleeding (3%/year). Thus an accurate identification of patients with unprovoked VTE with a low risk of recurrence is needed to avoid unnecessary anticoagulant treatment with a risk of bleeding. Over the past few years, microparticles (MPs) which are small vesicles originating from the budding of cellular membranes have emerged as important biological entities regulating hemostasis. MPs expose at their surface procoagulant molecules such as phosphatidylserin and tissue factor (TF). All data obtained in mouse models support a role of MPs in venous thrombosis mediated by the TF activation. Moreover, results from clinical studies showed that TF-MPs was associated with the risk of venous thrombosis. However, the predictive value of TF-MPs in the recurrence of VTE is unknown. Besides, no study has taken into account the recent progresses in the understanding of the role of MPs in haemostasis. Indeed, MPs vectorize molecules which are not only procoagulant but also profibrinolytic. The net result depends on a balance between both activities (the coagulo-lytic balance). This balance is can be measured by two complimentary assays on MPs. We hypothesized that the coagu-lytic balance of MPs is associated with an increased risk of VTE recurrence after stopping the anticoagulant treatment.
The purpose of this study is to evaluate prospectively ventilatory practices in the perioperative cardiac surgery period.