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Mesangial cells of the renal glomerulus are thought to have contractile properties, resembling those of smooth muscle cells. Since actin synthesis in mesangial cells is increased in selected animal models of glomerulonephritis, we evaluated the expression of alpha-smooth muscle actin (ASMA), the principal actin isoform found in smooth muscle cells, in(More)
Fibrillary glomerulonephritis is an unusual, but not rare cause of glomerulonephritis. Hypocomplementemia in association with fibrillary glomerulonephritis has been reported only once previously. A patient with hypocomplementemia and fibrillary deposits as demonstrated by electronmicroscopy is reported. The clinical and pathologic features of fibrillary(More)
A multi-site clinical study compared platelets chosen for refractory patients by prospective platelet crossmatching using stored donor platelets and HLA-based selection. Seventy-three patients who were refractory to random-donor platelets received two plateletpheresis components, one chosen by HLA-based criteria and the other by crossmatching. Patients were(More)
The CD40/CD40L (CD40 ligand) axis regulates several interactions between T cells and B cells. Blocking of CD40 engagement by CD40L inhibits Ig class switch by B cells as well as diminishes T cell response to an immunizing Ag. For these reasons, disruption of CD40/CD40L interactions by anti-CD40L administration or by genetic disruption of CD40L has(More)
Multitransfused recipients of random donor platelet concentrates frequently form broadly-reactive human leukocyte antigen (HLA) antibodies which restrict the pool of suitable donors to those who are HLA matched with the recipient. In an effort to expand the donor pool for such patients, a retrospective analysis of the antibodies formed by alloimmunized(More)
A blind reading of direct immunofluorescent staining of sputum smears was positive in five of 21 patients with Legionnaires' disease and none of 47 control patients. Positive slides showed from eight organisms per smear (one slide) to 20 to 100 organisms per oil-immersion (magnification, 100) field (three slides). Two of the positive specimens were obtained(More)
BACKGROUND HLAMatchmaker (HLAMM) is an algorithm that determines donor-recipient histocompatibility based on HLA type. This study determines the effectiveness of HLAMM in identifying suitable platelet (PLT) donors for refractory patients. STUDY DESIGN AND METHODS Data from a previous prospectively randomized multicenter study comparing cross-reactive(More)