In the 14th Workshop, at 1 year follow-up, survival for 1319 patients receiving deceased donor grafts and no HLA antibodies was 96% compared to 94% for 344 patients with HLA antibodies (p = 0.0004) and 83% survival for 33 patients with MICA (p = 0.0005). HR from multivariate analysis: HLA antibodies was 3.6 (p < 0.00001) and 6.1 for MICA (p = 0.006). Twelve patients with donor specific antibodies tested by single antigen beads had a 1 year survival of 64% (p = 0.008), and 27 patients with non-donor specific 'strong' antibodies had a 66% survival (p = 0.0003) compared to 92% survival in those with no antibodies.In conclusion, these two prospective trials, after 1 and 4 years, provided strong evidence that HLA and MICA antibodies are associated with graft failure.
An international collaborative study of 45 transplant centers was undertaken at the 14th International HLA (human leukocyte antigen) and Immunogenetics Workshop to see if HLA antibodies detected posttransplant are predictive of chronic graft failure. With the newly developed assay, MICA (major histocompatibility complex class I-related chain A) antibodies were also measured and their effect analyzed. Total of 5219 sera from patients who were more than 6 months posttransplant with functioning graft were tested for HLA antibodies by enzyme-linked immunosorbent assay, flow cytometry, or Luminex. HLA antibodies were found in 27.2% of kidney patients, 23.6% in the liver, 52.7% in the heart, and 21.7% in the lung. The method of antibody testing did not have a marked influence on the frequency of antibodies detected. MICA antibodies were detected in 15% of kidney patients, 30% of heart patients, and 31% of liver patients. Among 948 kidney patients who had HLA antibodies, 7.3% had rejected their graft within 1 year of testing, compared with 1.7% in 2615 patients without HLA antibodies (P= 0.8 x 10(-17)). Death occurred in 1.4% of total kidney patients and did not correlate to the presence of antibodies. We conclude that patients with posttransplant HLA antibodies indeed have a higher rate of chronic graft failure and that posttransplant antibodies are predictive of chronic rejection.
Objective To assess the effectiveness of the combination of colchicine and vitamin E (which has anti‐fibrotic, anti‐mitotic and anti‐inflammatory effects) in modifying the early stages of Peyronie's disease, by evaluating pain relief, correction of deformities and plaque size. Patients and methods In all, 45 patients were divided into two groups and treated from January 1998 to November 2001. Their mean (range) age was 53.4 (40–62) years, the time from onset of the disease < 6 months and they had penile deformity of < 30°; no patient had erectile dysfunction. Twenty‐two patients were given ibuprofen 400 mg/day for 6 months, whilst 23 received a combination of vitamin E 600 mg/day plus colchicine 1 mg every 12 h. Pain, plaque size and penile deformity were assessed at 6 months. Results There were no statistically significant differences between the groups at baseline in age, time from onset of the disease until the initial evaluation or plaque size. Although the proportion of patients reporting pain relief was higher amongst those receiving colchicine plus vitamin E (91% vs 68%) this was not significantly different, but differences in plaque size and penile curvature were significant. Conclusions The use of colchicine plus vitamin E during the early stages of Peyronie's disease (time from onset < 6 months) in patients with penile curvature of < 30° and no erectile dysfunction is an effective and well‐tolerated way to stabilize the disease. A more extensive study is needed, comparing these results with other oral therapies.
A single posttransplant test for human leukocyte antigen (HLA) antibodies in heart and lung graft patients was examined for its predictive value for graft survival as part of the 13th and 14th international histocompatibility workshops. We included patients with HLA antibodies who were tested 6 or more months after transplantation. They were followed for 3 to 5 years. Kaplan-Meier survival curves were used to analyze the data. Of the 235 heart transplant patients, 24.7% had HLA antibodies, whereas 13.3% of the 150 lung transplant recipients, tested positive for HLA antibodies. Heart transplant patients with antibodies had a 5-year survival of 42% vs. 58% for those without antibodies (P=0.0065). For lung transplant patients, the 5-year graft survival was 27% for those with antibodies vs. 56% for those without (P<0.0001). These results indicate that for heart and lung transplant patients, a single test after transplantation of HLA antibodies is predictive of graft survival.
Objective To assess the safety and ef®cacy of sildena®l citrate in renal transplant patients with erectile dysfunction, as up to half of men with renal failure may be affected and only 60±75% recover potency after transplantation. Patients and methods Fifty patients with erectile dysfunction and a functioning renal transplant were treated using sildena®l (mean age 54 years, mean time on dialysis 35 months, mean time from transplantation 20 months). The hypogastric artery was not used during transplantation in any patient. Sildena®l citrate was prescribed at doses of 25 or 50 mg depending on baseline creatinine values and on the response, and plasma levels of cyclosporin/FK506 were monitored. Results Thirty patients (60%) had a satisfactory response, with a mean time on dialysis of 23 months. Six patients (12%) did not take the sildena®l and in 14 (28%) the drug was ineffective. The mean time on dialysis in this group was 43 months. Six patients (12%) had side-effects that in no case led to withdrawal of treatment. Plasma levels of cyclosporin/ FK506 remained within the safety and ef®cacy limits in all patients. Conclusions Treatment with sildena®l citrate in renal transplant patients with erectile dysfunction is an effective and safe option, with few side-effects. Plasma levels of immunosuppressants are unchanged. The response was more effective in patients with a shorter time on dialysis, as penile vascular disease is less advanced.
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