100 research outputs found

    Long-term outcome of renal transplantation in adults with focal segmental glomerulosclerosis

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    P>Little information is available about the long-term results of kidney transplantation in adults with focal segmental glomerulosclerosis (FSGS). The outcomes of 52 renal transplants performed between 1988 and 2008 in 47 adults with FSGS were compared with those of 104 matched controls (median follow-up 93.4 vs. 109.4 months respectively). At 15 years, patient survival was 100% and graft survival 56% in FSGS patients vs. 88.3% and 64% respectively in controls (P = NS). FSGS recurred in 12 out of 52 grafts (23%) and led to graft failure in seven within 10 months (median). In the other five cases, proteinuria remitted and grafts are functioning 106 months (median) after transplantation. A second recurrence developed in five out of eight re-transplanted patients (62.5%) who lost their first graft because of recurrence; only one graft was lost. Patients with recurrence were more frequently male subjects (83% vs. 40%, P = 0.02), younger at diagnosis of FSGS (16.3 +/- 6.8 vs. 24.1 +/- 11.5 years, P = 0.03) and of younger age at transplantation (28.4 +/- 7.8 vs. 35.8 +/- 12.2 years, P = 0.05). Treatment with plasmapheresis plus ACE inhibitors achieved either complete or partial remission in 80% of the cases. Long-term patient and renal allograft survivals of adults with FSGS were comparable to those of controls. Recurrence was more frequent in young patients and in patients who lost a previous graft from recurrence. Graft loss resulting from a second recurrence is lower than expected

    Renal Disease in Essential Mixed Cryoglobulinaemia: LONG-TERM FOLLOW-UP OF 44 PATIENTS

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    The mode of presentation of renal disease in 44 patients with essential mixed cryoglobulinaemia (EMC) was: acute renal failure (two patients), acute nephritic syndrome (six patients), nephrotic syndrome (eight patients), proteinuria and/or haematuria (28 patients). Renal biopsy, performed in 35 patients, showed proliferative lesions in 33, while only minimal glomerular changes were seen in the remaining two. Immunofluorescence studies showed: IgG (85 per cent), IgA (36 per cent), IgM (90 per cent), C3 (90 per cent), Clq (47 per cent), and C4 (33 per cent) deposits, mainly located in subendothelial position. On electron microscopy, crystalloid structure of deposits and monocyte infiltration of capillary loops were the outstanding feature. The survival rate was 75 per cent at 10 years from the onset of clinical symptoms. Thirty-nine patients were followed for three to 146 months (mean 53·8). Twelve patients died, cardiovascular disease and infection being the commonest cause of death. Thirteen patients showed acute renal failure or acute nephritic syndrome: nine recovered completely, whereas the remaining four died during the acute renal episode. Three patients developed chronic renal failure, but only one required chronic dialysis. The ominous significance of renal impairment in EMC should therefore be revaluated. The high prevalence of hypertension (28/44 patients) which was refractory to treatment in six, may be important to the clinical outcom

    Renal transplantation in adults with Henoch-Schonlein purpura: long-term outcome

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    Background. Little information is available about the long-term outcome of renal transplantation in adults with Henoch-Schonlein purpura (HSP). Methods. We compared the outcomes of 17 patients with HSP who received 19 renal transplants with those of 38 controls matched for time of transplantation, age, gender and source of donor. The mean post-transplant follow-up was 109 +/- 99 months for HSP patients and 110 +/- 78 months for controls. Results. The actuarial 15-year patient Survival was 80% in HSP patients and 82% in controls, and the death-censored graft survival was 64% in FISP patients and in controls. The risks of acute rejection, chronic graft dysfunction, arterial hypertension and infection were not different between the two groups. In eight grafts (42%) recurrence of HSP nephritis was found (0.05/patient/year). In spite of therapy, one patient died and four eventually restarted dialysis respectively 10, 32, 35 and 143 months after renal transplant. Seventy-one percent of grafts transplanted in patients with necrotizing/crescentic glomerulonephritis of the native kidney had HSP recurrence in comparison to 12% of recurrences in patients with mesangial nephritis (P = 0.05) Conclusions. Long-term patient and allograft survival of HSP patients was good. However, 42% of HSP patients, particularly those with necrotizing/crescentic glomerulonephritis of the native kidneys, developed a recurrence of HSP nephritis that eventually caused the loss of the graft function in half of them

    Renal transplantation in adults with Henoch-Schonlein purpura: long-term outcome

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    Background. Little information is available about the long-term outcome of renal transplantation in adults with Henoch-Schonlein purpura (HSP). Methods. We compared the outcomes of 17 patients with HSP who received 19 renal transplants with those of 38 controls matched for time of transplantation, age, gender and source of donor. The mean post-transplant follow-up was 109 +/- 99 months for HSP patients and 110 +/- 78 months for controls. Results. The actuarial 15-year patient Survival was 80% in HSP patients and 82% in controls, and the death-censored graft survival was 64% in FISP patients and in controls. The risks of acute rejection, chronic graft dysfunction, arterial hypertension and infection were not different between the two groups. In eight grafts (42%) recurrence of HSP nephritis was found (0.05/patient/year). In spite of therapy, one patient died and four eventually restarted dialysis respectively 10, 32, 35 and 143 months after renal transplant. Seventy-one percent of grafts transplanted in patients with necrotizing/crescentic glomerulonephritis of the native kidney had HSP recurrence in comparison to 12% of recurrences in patients with mesangial nephritis (P = 0.05) Conclusions. Long-term patient and allograft survival of HSP patients was good. However, 42% of HSP patients, particularly those with necrotizing/crescentic glomerulonephritis of the native kidneys, developed a recurrence of HSP nephritis that eventually caused the loss of the graft function in half of them

    The long-term prognosis of renal transplant in patients with systemic vasculitis

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    Little information is available about the long-term outcome of renal transplantation in patients with systemic vasculitis (SV). We compared the outcomes of 19 renal transplant recipients with SV with those of 38 controls matched for time of transplantation, age, gender and source of donor. The mean post-transplant follow-up was 58 +/- 57 months for vasculitic patients and 61 +/- 49 months for controls. The actuarial 10-year patient survival was 87% in vasculitic patients and 90% in controls, death-censored graft survival were 84% and 100%, respectively. The risks of acute and chronic rejection, and arterial hypertension were not significantly different between the two groups. Infection was significantly more frequent in vasculitic patients (74% vs. 34%; p = 0.01). Seven patients (36.8%) had a recurrence of vasculitis in mean 45 months after renal transplant (0.076/patients/year). After recurrence, one patient had an irreversible humoral rejection, another died from hemophagocytosis and another restarted dialysis 1 year later. Long-term patient and renal allograft survival in vasculitic patients was good. Although graft function recovered in most relapsers after reinforcement of immunosuppression, one patient died and two lost graft function

    Direct sunlight facility for testing and research in HCPV

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    A facility for testing different components for HCPV application has been developed in the framework of “Fotovoltaico ad Alta Efficienza” (FAE) project funded by the Sicilian Regional Authority (PO FESR Sicilia 2007/2013 4.1.1.1). The testing facility is equipped with an heliostat providing a wide solar beam inside the lab, an optical bench for mounting and aligning the HCPV components, electronic equipments to characterize the I-V curves of multijunction cells operated up to 2000 suns, a system to circulate a fluid in the heat sink at controlled temperature and flow-rate, a data logging system with sensors to measure temperatures in several locations and fluid pressures at the inlet and outlet of the heat sink, and a climatic chamber with large test volume to test assembled HCPV modules

    Risk of Kaposi's sarcoma and of other cancers in Italian renal transplant patients

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    A follow-up study of 1844 renal transplant patients in Italy showed a 113-fold increased risk for Kaposi's sarcoma. Kaposi's sarcoma risk was higher in persons born in southern than in northern Italy. Significant increases were also observed for cancers of the lip, liver, kidney and for non-Hodgkin's lymphoma
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