Loading clinical trials...
Loading clinical trials...
Showing 1-4 of 4 trials
NCT03869593
Our previous studies delineate a novel pathway of immune activation in animals that the investigators have named Anti-Virulence Immunity (AVI). Using a mice model of bacteremia, the investigators have demonstrated that Escherichia coli Cytotoxic Necrotizing Factor 1 (CNF1) activity is sensed by the immune system. This immune sensing results in a rapid bacterial clearing during bacteremia triggered by uropathogenic E. coli-expressing CNF1. The investigators already confirmed the involvement of one inflammasome using macrophages isolated from Knock-out mice. The investigators have recently determined the conservation in human monocytes of the interleukin -1beta maturation triggered by CNF1 and observed the heterogeneous capacity of monocytes to respond to the CNF1 treatment depending on the donors. Here, to determine the importance in natura of AVI the investigators will analyze the blood content of patients presenting E. coli and S. aureus bacteremia. The DNA of monocytes isolated from patients will be extracted and various genes implicated in the activity of various inflammasomes will be sequenced to identify mutations that could explain the susceptibility to bacteremia or a specific clinical presentation, i.e. requirement of a management in ICU because of organ failure.
NCT02729116
This study evaluates oral antimicrobial agents for the treatment of non-bacteremic acute urinary tract infection caused by Extended Spectrum Beta Lactamase producing Escherichia coli or Klebsiella pneumoniae in Post-kidney transplantation. Patients are treated with intravenous (IV) antibiotics follow by oral sitafloxacin or IV ertapenem.
NCT02541695
Although the existing diarrhoeagenic Escherichia coli (E. coli) challenge model is already suitable for dietary interventions in its current form, further characterization of the working-mechanism of the attenuated strain and further optimization of the study design will enable the investigators to better select those ingredients that affect the key pathophysiological processes. The aim of the CORAL study is to further characterize and increase the discriminative power of the diarrhoeagenic E. coli challenge model.
NCT01406288
The Hemolytic Uremic Syndrome (HUS) in its typical form occurs after a food born infection with a shiga-toxin secreting bacteria, usually Escherichia coli of the O157H7 serotype. An outbreak of bloody diarrhea followed by HUS begun after a collective meal with 120 persons on June 8th, 2011 in Bègles, a city of Bordeaux urban area (CUB). At least 9 patients, 8 adults and 1 child have been involved in this HUS outbreak, E. coli of the O104:H4 serotype being demonstrated in most patients. This outbreak is remarkable by its preponderance in adults and women, its aggressiveness with multiorgan involvement , i.e. the kidneys, brain, liver, pancreas, and skin. Pathophysiology, prognosis, and treatment of typical HUS are poorly defined, particularly in adults who are usually not involved in typical E. coli O157H7 HUS. The aim of the present study is to gain knowledge on these different aspects of the HUS, including response to therapy.