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Introduction: The combination of tacrolimus/mTORi compared to tacrolimus/mycophenolate (MMF) was shown to be safe in the TRANSFORM trial. For donors with a high KDPI (Kidney Donor Profile Index), however, there are no data to support the effectiveness of this regimen. The main objective of this study was to explore the influence of the KDPI on 12-month renal function (eGFR) in patients receiving mTORi or MMF. Methods: Multicenter cohort study of four Brazilian services that use the tacrolimus with mTORi as a protocol. Data from 2008 to 2018 of the tacrolimus/mycophenolate (MMF) and tacrolimus/mTORi (mTORi) regimens in renal transplant recipients over 18 years old were collected. For better homogeneity, the propensity score was used. Afterward, the method used for group selection ("match") was the K-nearest neighbor (KNN) method. New analyses were performed on this new balanced sample, and two different subsamples were constituted based on the median KDPI. Results: The global analysis (n = 870) showed that the major determinant of worse kidney function was high KDPI. Afterward, the three strata were analyzed. In the first stratum (KDPI up to 50), 242 patients were evaluated, with 121 in each group. The eGFR was 64â ml/min/1.73â m2 in the mTORi group compared to 63 in the MMF group, p = 0.4, and when imputed eGFR was evaluated, 61 in the mTORi and 53 in the MMF, p = 0.065. In the second stratum (KDPI from 50 to 85), 282 patients were evaluated, with 141 in each group. eGFR was 46â ml/min/1.73â m2 in mTORi compared to 48 in MMF, p = 0.4, and when imputed eGFR was evaluated, 40 mTORi and 41 MMF, p = 0.8. In the last stratum (KDPI higher than 85) with n = 126 and 63 cases per group, eGFR was 36â ml/min/1.73â m2 in mTORi compared to 39 in MMF, p = 0.2, and when imputed eGFR was evaluated, 30 mTORi and 34 MMF, p = 0.2. Discussion: The regimen using mTOR inhibitor is an effective and safe regimen when compared to the standard regimen. In addition, the scheme seems to offer additional protection against infections and may be an important ally in cases of high risk for these pathologies.
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ABSTRACT Introduction: The number of incident and prevalent patients on dialysis has increased, as well as the number of candidates for renal transplantation in Brazil, without a proportional increase in the number of organ donors. The use of expanded kidneys, as to renal function, may be an alternative to increase the supply of organs. Objective: to discuss the feasibility of using expanded kidneys for renal function, which are in severe acute renal injury. Methods: All cases of renal transplantation of deceased donors performed at the Hospital das Clínicas de Botucatu of UNESP, from January 2010 to June 2018, totaling 732 cases were evaluated. Cases with final donor creatinine greater than 6 mg/dL were selected. Results: four patients were selected, of whom all donors were in severe acute kidney injury (AKI). These donors presented rhabdomyolysis as a probable cause of severe AKI, were young, with no comorbidities and had decreased urinary volume in the last 24 hours. The clinical evolution of all the recipients was satisfactory, with a glomerular filtration rate after transplantation ranging from 48 to 98 mL/min/1.73 m2. Conclusion: this series of cases shows the possibility of using renal donors in severe AKI, provided the following are respected: donor age, rhabdomyolysis as the cause of AKI, and implantation-favorable biopsy findings. Additional studies with better designs, larger numbers of patients and longer follow-up times are needed.
RESUMO Introdução: O número de pacientes incidentes e prevalentes em diálise tem aumentado, assim como o número de candidatos ao transplante renal no Brasil, sem um aumento proporcional do número de doadores de órgãos. O uso de rins expandidos, quanto à função renal, pode ser uma alternativa para aumentar a oferta de órgãos. Objetivo: discutir a viabilidade do uso de rins expandidos quanto à função renal, que estejam em lesão renal aguda severa. Métodos: foram avaliados todos os casos de transplante renal de doador falecido realizados no Hospital das Clínicas de Botucatu da UNESP, de janeiro de 2010 a junho de 2018, totalizando 732 casos. Selecionou-se os casos com creatinina final do doador maior do que 6 mg/dL. Resultados: quatro pacientes foram selecionados, dos quais todos os doadores estavam em lesão renal aguda (LRA) severa. Esses doadores apresentavam rabdomiólise como provável causa de LRA severa, eram jovens, sem comorbidades e apresentavam diminuição de volume urinário nas últimas 24 horas. A evolução clínica de todos os receptores foi satisfatória, com taxa de filtração glomerular após o transplante variando entre 48 a 98 mL/min/1,73m2. Conclusão: essa série de casos mostra a possibilidade de utilização de doadores renais em LRA severa, desde que respeitadas as condições seguintes: idade do doador, rabdomiólise como causa de LRA e achados de biópsia favoráveis à implantação. Estudos adicionais com melhores desenhos, maior número de pacientes e maiores tempos de seguimento são necessários.
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Rhabdomyolysis/diagnosis , Tissue Donors/statistics & numerical data , Kidney Transplantation/methods , Delayed Graft Function/diagnosis , Acute Kidney Injury/surgery , Research Design , Brazil/epidemiology , Cadaver , Feasibility Studies , Retrospective Studies , Renal Dialysis/statistics & numerical data , Kidney Transplantation/statistics & numerical data , Outcome Assessment, Health Care , Creatinine/blood , Delayed Graft Function/etiology , Acute Kidney Injury/etiology , Glomerular Filtration Rate/physiology , Graft Survival/physiology , Kidney/physiopathologyABSTRACT
ABSTRACT Introduction: The progress in kidney transplantation has been evident over the years, as well as its benefits for patients. Objectives: To evaluate the 1.000 kidney transplants performed at the Botucatu Medical School University Hospital, subdividing the patients in different periods, according to the current immunosuppression, and evaluating the differences in graft and patient survival. Methods: Retrospective cohort analysis of the transplants performed between 06/17/87 to 07/31/16, totaling 1,046 transplants, subdivided into four different periods: 1) 1987 to 2000: cyclosporine with azathioprine; 2) 2001 to 2006: cyclosporine with mycophenolate; 3) 2007 to 2014: tacrolimus with antimetabolic; and 4) 2015 to 2016: tacrolimus with antimetabolic, with increased use of the combination of tacrolimus and mTOR inhibitors. Results: There was an increase in the mean age of recipients and increase in deceased donors and their age in the last two periods. There was a reduction in graft function delay, being 54.3% in the fourth period, compared to 78.8% in the first, p = 0.002. We found a reduction in acute rejection, being 6.1% in the last period compared to 36.3% in the first, p = 0.001. Urological complications and diabetes after transplantation were more frequent in the first two periods. The rates of cytomegalovirus infection were higher in the last two periods. There was an improvement in graft survival, p = 0.003. There was no difference in patient survival, p = 0.77 (Figure 2). Conclusion: There was a significant increase in the number of transplants, with evolution in graft survival, despite the worsening in the profiles of recipients and donors.
RESUMO Introdução: O progresso no transplante renal tem sido evidente ao longo dos anos, assim como seus benefícios para os pacientes. Objetivos: Avaliar os 1000 transplantes renais realizados no Hospital das Clínicas da Faculdade de Medicina de Botucatu, subdividindo os pacientes em diferentes períodos, de acordo com a imunossupressão vigente, e avaliar as diferenças em relação à sobrevida do enxerto e do paciente. Métodos: Análise da coorte retrospectiva dos transplantes realizados entre 17/06/87 a 31/07/16, totalizando 1046 transplantes, subdivididos em quatro diferentes períodos: 1) 1987 a 2000: ciclosporina com azatioprina; 2) 2001 a 2006: ciclosporina com micofenolato; 3) 2007 a 2014: tacrolimo com antimetabólico; e 4) 2015 a 2016: tacrolimo com antimetabólico, com aumento do uso da combinação de tacrolimo com inibidores da mTOR. Resultados: Houve aumento da idade média dos receptores e aumento de doadores falecidos e da idade destes nos dois últimos períodos. Observou-se redução de retardo de função do enxerto, sendo de 54,3% no quarto período, em comparação a 78,8% no primeiro, p = 0,002. Observamos redução de rejeição aguda, sendo 6,1% no último período em comparação a 36,3% no primeiro, p = 0,001. As complicações urológicas e o diabetes após o transplante foram mais frequentes nos primeiros dois períodos. As taxas de infecção por citomegalovírus foram maiores nos dois últimos períodos. Houve melhoria na sobrevida do enxerto, p = 0,003. Não houve diferença na sobrevida do paciente, p = 0,77 (Figura 2). Conclusão: Houve aumento significativo no número de transplantes, com evolução na sobrevida do enxerto, apesar da piora no perfil dos receptores e doadores.
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Kidney Transplantation/trends , Kidney Transplantation/statistics & numerical data , Schools, Medical , Time Factors , Brazil , Survival Analysis , Retrospective Studies , Cohort Studies , Graft Survival , Hospitals, UniversityABSTRACT
Resumo Introdução: A indicação de terapia de indução não é consensual em doadores vivos. Objetivo: Comparar não indução com indução com basiliximab e timoglobulina na incidência de rejeição aguda em transplante renal com doador vivo. Métodos: Todos os casos de transplante renal com doador vivo realizados no serviço de transplante do Hospital das Clínicas de Botucatu da UNESP no período de janeiro de 2010 a dezembro de 2013. O grupo foi dividido pelo tipo de medicação usada na indução. Resultados: Foram avaliados 90 pacientes. Não houve diferenças nas características basais de idade e doença de base. A taxa de rejeição aguda comprovada por biópsia foi maior no grupo sem indução (42,9%) em comparação aos grupos basiliximab (20%) e timoglobulina (16,7%), p = 0,04. A divisão das rejeições por compatibilidade mostra que os idênticos apresentaram menor taxa de rejeição (10%). O grupo haploidêntico sem indução apresentou as maiores taxas de rejeição (53,3%). No grupo distinto, todos foram induzidos e as taxas de rejeição foram semelhantes com basiliximab ou timoglobulina, p = NS. O uso de terapia de indução associou-se de forma independente a menor risco de rejeição (OR = 0,32 IC: 0,11-0,93, p = 0,036). Não houve diferenças na função renal aos 6 meses e sobrevida do paciente e enxerto nos três grupos. Discussão: Os pacientes haploidênticos sem indução foram os que apresentaram maiores taxas de rejeição aguda. O grupo de pacientes induzidos com timoglobulina apresentava maior risco imunológico, entretanto, eles mostraram baixas taxas de rejeição. Conclusão: O uso de terapia de indução resultou em menores taxas de rejeição em transplante com doador vivo. .
Abstract Introduction: Indications for induction therapy is not consensual in living donors. Objective: The objective of this study was compare no induction with thymoglobulin and basiliximab induction in the incidence of acute rejection in kidney transplantation with living donor. Methods: We select all cases of renal transplantation with living donor performed in Hospital das Clínicas de Botucatu da UNESP during the period of January 2010 to December 2013. The group was divided by the type of medication used for induction. Results: A total of 90 patients were evaluated. There were no differences in baseline characteristics of age and underlying disease. The rate of biopsy-proven acute rejection was higher in the group without induction (42.9%) compared to basiliximab group (20%) and Thymoglobulin (16.7%), p = 0.04. The rejection by compatibility shows that the identical had the lower rejection rate (10%). The haploidentical group without induction had the highest rejection rates (53.3%). In all distinct group the rejection rates were similar with basiliximab or Thymoglobulin, p = NS. The use of induction therapy was associated independently with a lower risk of rejection (OR = 0.32 CI: 0.11 to 0.93, p = 0.036). There were no differences in renal function at 6 months and patient survival and graft in the three groups. Discussion: The haploidentical patients without induction were those with higher rates of acute rejection. The group of patients induced with Thymoglobulin had a higher immunological risk, however showed low rates of rejection. Conclusion: The use of induction therapy resulted in lower rates of rejection in transplantation with living donor. .
Subject(s)
Humans , Male , Female , Adult , Antibodies, Monoclonal/therapeutic use , Antilymphocyte Serum/therapeutic use , Immunosuppressive Agents/therapeutic use , Kidney Transplantation , Recombinant Fusion Proteins/therapeutic use , Living Donors , Retrospective StudiesABSTRACT
Introdução: Os resultados alcançados pelos transplantes renais nas últimas décadas têm melhorado progressivamente. Objetivo: A fim de determinar a extensão desse progresso, conduzimos uma análise dos resultados obtidos em nosso programa de transplantes através de três períodos diferentes. Métodos: Avaliamos os 600 transplantes renais realizados no HC FMB-UNESP até dezembro de 2011, subdividindo-os em três eras, de acordo com a imunossupressão vigente. Era 1: de 1987 a 2000 (n = 180); associação de ciclosporina e azatioprina. Era 2: de 2001 a 2006 (n = 120); associação de ciclosporina e micofenolato e Era 3: de 2007 a 2011 (n = 300); associação de tacrolimus e micofenolato. Resultados: Os resultados mostram aumento da idade média do receptor, da prevalência de diabetes e do número de transplantes com doador falecido (60%) na terceira era. O uso de terapia de indução foi de 75% era atual contra 46,6% (Era 2) e 3,9% (Era 1), p < 0,0001. Os dados de sobrevida geral por tipo de doador mostram dados semelhantes à literatura. Houve progressivo aumento da sobrevida do enxerto com doadores falecidos em 5 anos, saindo de 13,7% (Era 1) para 81,9% (Era 3). Conclusão: Houve significativas diferenças ao longo do tempo, culminando com aumento do volume de transplantes na atual era (média de 14 transplantes/ano na Era 1 para 75 transplantes/ano na Era 3). Inverteu-se o perfil de transplantes na era atual com predomínio de doador falecido. A melhor sobrevida com doador falecido da atual era foi atribuída a maior experiência do centro e aos esquemas de imunossupressão baseados na combinação de tacrolimus com micofenolato associados a esquema de indução. .
Introduction: A progressive improvement in kidney transplant outcomes has been achieved over the last decades. Objective: To determine the degree to which this has occurred in our center, we conducted an outcome analysis of our kidney transplant program during three different time periods, especially focusing on patient and graft survival. Methods: The 600 kidney transplants performed at Botucatu Medical School/UNESP up to December 2011 were examined. Three different time periods were chosen to correspond with major shifts in immunosuppressant usage: Era 1 (1987-2000), cyclosporine and azathioprine usage (n = 180); Era 2 (2001-2006), cyclosporine and mycophenolate mofetil usage (n = 120); and Era 3 (2007-2011), tacrolimus and mycophenolate (n = 300). Results: Compared with the first era, mean recipient age, diabetes prevalence, and the number of living donor transplantations (60%) were increased in the third era. Induction therapy was used in 75% of the cases in Era 3, 46.6% in Era 2, and in 3.9% in Era 1 (p < 0.0001). The mean number of transplants/year rose from 14 in Era 1 to 75 in Era 3. Overall survival according to donor type was similar to that reported in the literature. Five-year graft survival following deceased donor transplantation progressively increased from 13.1% (Era 1) to 81.9% (Era 3). Conclusion: Significant differences were observed over time. The percentage of living donors decreased as that of deceased donors increased. Survival after deceased donor transplants was greatest in Era 3, probably due to the improved experience of the medical team, and to the use of tacrolimus and mycophenolate mofetil combination with induction. .