Jacques Pourrat

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Hemolytic uremic syndrome (HUS) is characterized by the triad of thrombocytopenia, microangiopathic hemolytic anemia, and acute renal failure. The non-Shiga toxin-associated HUS (atypical HUS [aHUS]) has been shown to be a disease of complement dysregulation. Mutations in the plasma complement regulators factor H and factor I and the widely expressed(More)
BACKGROUND The influence of hepatitis C virus (HCV) treatment on the course of HCV cryoglobulinemic membranoproliferative glomerulonephritis (MPGN) is controversial. METHODS Twenty-five patients with nephrotic-range proteinuria, mixed cryoglobulinemia, MPGN proved by renal biopsy, and HCV infection were studied for their response to antiviral treatment.(More)
Plasma DNA that circulates mainly as mononucleosomes is a cell death marker. Its significance and prognostic value in cancer as compared to other tumour markers was investigated in 68 patients hospitalised for lung cancers. Prognostic values of the various studied parameters were evaluated using the Cox's model. The cellular origin of plasma DNA was further(More)
Fifty-seven cases of Ig light chain-associated Fanconi syndrome (FS) have been reported so far, mostly as isolated reports. The pioneering work by Maldonado and associates (35), who reviewed the first 17 cases in 1975, led to the unifying concept that patients with FS and Bence Jones proteinuria have a special form of plasma cell dyscrasia characterized by(More)
BACKGROUND AND OBJECTIVES Renal infarction is an arterial vascular event that may cause irreversible damage to kidney tissues. This study describes the clinical characteristics of patients with renal infarction according to underlying mechanism of vascular injury. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS This study retrospectively identified 94(More)
Microscopic polyangiitis (MPA) is a systemic small-vessel vasculitis primarily associated with necrotizing glomerulonephritis and pulmonary capillaritis. In this retrospective study of 29 patients with MPA and alveolar hemorrhage (AH), we characterized the pulmonary manifestations at presentation and assessed the short- and long-term outcome. AH was(More)
Severe ADAMTS13 deficiency occurs in 13% to 75% of thrombotic microangiopathies (TMA). In this context, the early identification of a severe, antibody-mediated, ADAMTS13 deficiency may allow to start targeted therapies such as B-lymphocytes-depleting monoclonal antibodies. To date, assays exploring ADAMTS13 activity require skill and are limited to only(More)
BACKGROUND Low-complement urticarial vasculitis is an uncommon condition associating urticaria, glomerulonephritis, obstructive ventilatory disorders, and anti-Ciq antibodies. CASE REPORT We report a case in a 34-year-old woman who developed urticaria with purpura, membranoproliferative glomerulonephritis (creatinine 238 mumol/l) and bronchial obstruction(More)
OBJECTIVE Antibodies directed against components of neutrophil cytoplasm have been detected in various systemic vasculitides and especially in Wegener's granulomatosis. In polyarteritis nodosa (PAN) and Churg-Strauss syndrome, few data are available and correlation between clinical manifestations and antineutrophil cytoplasm antibodies (ANCA) has not been(More)
Plasma DNA increases where cell death occurs in vivo. To investigate its significance in elderly patients, plasma DNA was assayed in 79 institutionalized patients over 68 years of age. The patients were divided into two groups: group I comprises 39 patients suffering from various acute or chronic illnesses; group II comprises 40 patients without chronic(More)