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1.
Am J Transplant ; 10(7): 1597-604, 2010 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-20353466

RESUMO

Although glomerular hematuria is likely a sign of chronic kidney disease that will develop into overt nephropathy after donation, it remains unclear whether prospective donors with hematuria should be excluded. We reviewed the medical records of 242 donors who donated at our institution from 2001 to 2007 and surveyed the prevalence of hematuria pre- and postdonation. We then investigated the association of hematuria with proteinuria postdonation and trends in glomerular filtration rate. Before donation, 8.3% of 242 donors presented with persistent hematuria, a finding that was significantly associated with dysmorphic hematuria before donation. Most cases of predonation persistent hematuria persisted after donation, and the overall prevalence increased to 15.3%. During a median follow-up period of 2.3 years after donation, 8.3% developed persistent proteinuria, with incidence being significantly higher in donors having persistent hematuria with dysmorphic red blood cells (d-RBC) both before and after donation. Postdonation persistent hematuria with d-RBC was also associated with a progressive decline in renal function. These results indicate that persistent glomerular hematuria is strongly associated with a higher incidence of postdonation progressive kidney disease. Potential donors with persistent glomerular hematuria should be excluded, while those with isolated hematuria need to be evaluated with heightened caution.


Assuntos
Hematúria/complicações , Nefropatias/etiologia , Doadores Vivos , Nefrectomia/efeitos adversos , Idoso , Progressão da Doença , Diurese , Feminino , Seguimentos , Taxa de Filtração Glomerular , Hematúria/diagnóstico , Hematúria/fisiopatologia , Humanos , Nefropatias/complicações , Nefropatias/fisiopatologia , Masculino , Pessoa de Meia-Idade , Seleção de Pacientes , Proteinúria/diagnóstico , Proteinúria/epidemiologia , Proteinúria/etiologia , Estudos Retrospectivos , Fatores de Risco
2.
Am J Transplant ; 9(11): 2514-9, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19681812

RESUMO

The clinical course and risk factors for developing end-stage renal disease (ESRD) after heminephrectomy in living kidney donors have scarcely been investigated. We reviewed medical records and identified eight case donors who developed chronic kidney disease (CKD) stage 5 or ESRD, and subsequently investigated the association between postoperative clinical courses and changes in renal function. To conduct a case-control study, we also selected a control group comprising 24 donors who had maintained stable renal function and were matched for age, sex and follow-up time since donation. Except for one donor who developed ESRD caused by a traffic accident, none of the donors developed progressive renal dysfunction immediately after donation. Their renal functions remained stable for a long period of time, but started to decline after developing new comorbidities, especially risk factors known as progression factors (proteinuria or hypertension) or accelerating factors (cardiovascular [CV] event or infection) of CKD. As compared with the control donors, incidence of postoperative persistent proteinuria, acute CV event, severe infection and hospitalization due to accelerating factors of CKD were significantly higher in the case donors. These results suggest the importance of long-term (more than 10 years) follow-up of donors with special attention on the risk factors of CKD.


Assuntos
Falência Renal Crônica/epidemiologia , Transplante de Rim , Doadores Vivos , Nefrectomia/efeitos adversos , Idoso , Estudos de Casos e Controles , Nefropatias Diabéticas/epidemiologia , Progressão da Doença , Feminino , Seguimentos , Humanos , Hipertensão Renal/epidemiologia , Rim/fisiologia , Masculino , Pessoa de Meia-Idade , Nefrectomia/estatística & dados numéricos , Proteinúria/epidemiologia , Fatores de Risco
3.
Transplant Proc ; 50(4): 978-981, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29731096

RESUMO

BACKGROUND: Even if a living donor candidate exists, there are some cases that do not result in kidney transplantation (KTx) due to problems on the recipient side. The aim of this study was to clarify causes of ineligibility for KTx in these cases, so as to make RTx more applicable for patients. METHODS: We targeted 470 patients with end-stage renal disease who applied for the primary kidney KTx from 2010 to 2012. Then we selected those who were not applicable for KTx and investigated recipient causes of ineligibility for KTx or not receiving KTx. RESULTS: The average age of recipients was 47.6 ± 12.9 (7-82) years. A majority of the 470 patients were male (n = 305, 64.9%). Two hundred ninety-seven patients intended to receive a living donor KTx and the others hoped for a deceased donor KTx. Of the 297 patients, 207 (70.0%) underwent KTx and 9 (1.9%) were being prepared for KTx at the time of the survey. Eighty-three patients (27.9%) did not receive a living KTx, with 59 of these due to recipient-related problems and 30 due to donor-related problems. We further classified the reasons for these 59 recipients not undergoing KTx as follows: (1) unclear reasons (35.6%); (2) insufficient intention to receive transplant (13.6%); (3) heart disease (10.2%); (4) malignancy (8.5%); (5) immunologic risks (5.1%); (6) death during the waiting period (5.1%); (7) cerebrovascular events (5.1%); (8) cardiovascular problems (5.1%); (9) psychiatric disorders (3.4%); and (10) infections (3.4%). CONCLUSION: Nearly 50% of the reasons for ineligibility as a recipient were related to their intention to receive KTx, with 94.9% of the nontransplanted cases due to nonimmunologic reasons. Thanks to the recent advances in immunosuppressive therapy, there were only 3 patients who could not undergo KTx due to immunologic risks. Based on these results, transplant surgeons should not only emphasize physical evaluation but should also pay careful attention to the recipient's intention to receive KTx.


Assuntos
Falência Renal Crônica/cirurgia , Transplante de Rim/psicologia , Transplante de Rim/estatística & dados numéricos , Doadores Vivos , Transplantados/psicologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Feminino , Humanos , Japão , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários , Adulto Jovem
4.
Transplant Proc ; 49(5): 959-962, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28583567

RESUMO

AIM: We investigated clinical outcomes of patients in Japan with a history of long-term dialysis treatment. METHODS: We conducted 1171 kidney transplantations between 2000 and 2015. Sixty of the patients had undergone dialysis therapy for >20 years before the transplantation. We compared graft and patient survivals between the recipients with >20 years of dialysis (long dialysis group [LGD]) and those with <20 years (control group [CG]) in a case-control study, in which sex and age of both donors and recipients, ABO compatibility, and calendar year of transplantation were matched. RESULTS: Average age of LDG was 52.8 ± 8.9 years, and that of CG was 54.2 ± 12.6 (P > .05). Durations of dialysis were 25.4 ± 1.57 vs 5.8 ± 5.8 years, respectively (P < .05). The graft survival rates were 91.6%, 89.9%, and 81.8% at 3, 5, and 10 years in LDG vs 90.71%, 84.8%, and 78.3% in CG, respectively (P > .05). The patient survival rates were 96.6%, 93.2%, and 88.6% in LDG vs 94.5%, 91.0%, and 83.9%, respectively (P > .05). There was no significant difference in mean estimated glomerular filtration rates for post-transplant 10 years between them. CONCLUSION: LDG showed satisfying clinical outcomes comparable to those of CG both in graft and patient survivals and renal function.


Assuntos
Rejeição de Enxerto , Sobrevivência de Enxerto , Transplante de Rim/métodos , Diálise Renal , Adulto , Estudos de Casos e Controles , Feminino , Humanos , Japão , Masculino , Pessoa de Meia-Idade , Fatores de Tempo , Resultado do Tratamento
5.
Transplant Proc ; 49(1): 45-48, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28104156

RESUMO

The number of recipients waiting for a transplant is increasing. In Japan, there is more frequent use of organs from expanded-criteria donors (ECDs) after circulatory death. We retrospectively analyzed long-term outcomes of kidney transplantation (KT) from expanded-criteria donation after circulatory death (DCD). From 1995 to 2013, 97 cases of KT from DCD donors were performed in our department. Death-censored graft survival rates of ECD kidneys (n = 50) versus standard-criteria deceased-donor (SCD) kidneys (n = 47) for 1, 5, and 10 years after transplantation were 84.0% vs 97.9%, 74.8% vs 95.6%, and 70.2% vs 81.8%, respectively. No significant difference was found between the 2 groups (P = .102). Kidneys from donors with a history of hypertension (HTN) and cerebrovascular events (CVE) and contribution from older donors had significantly lower 10-year graft survival rates (P values of .010, .036, and .050, respectively). Cox proportional hazard regression analyses showed donor age to be significantly associated with long-term graft survival independently from other factors. These results suggest that ECD kidneys remain an acceptable alternative to dialysis under certain conditions. Increased donor age was a significant risk factor determining long-term graft function. Moreover, comorbidities of HTN and CVE could become significant risk factors, especially in older donors.


Assuntos
Seleção do Doador/métodos , Transplante de Rim/métodos , Rim/fisiopatologia , Doadores de Tecidos/provisão & distribuição , Transplantes/fisiopatologia , Adulto , Idoso , Feminino , Sobrevivência de Enxerto , Parada Cardíaca , Humanos , Japão , Transplante de Rim/efeitos adversos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento
6.
Transplant Proc ; 46(10): 3438-42, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25498068

RESUMO

INTRODUCTION: We analyzed the relationship between underlying nephropathy and long-term outcomes in kidney transplant recipients. METHODS: We retrospectively analyzed data from 678 patients who underwent kidney transplantation (KTx) between 1998 and 2011. Recipients with 13 major nephropathies were evaluated for graft and patient survival, and causes of graft loss. RESULTS: The best 10-year graft survival rates (100%) were in the patients with autosomal-dominant polycystic kidney disease, preeclampsia, Alport syndrome, and purpura nephritis. The worst rate (50.8%) was in patients with non-insulin-dependent diabetes mellitus nephropathy (NIDDMN; P = .039). Causes of graft-loss in the NIDDM patients included chronic rejection (6 cases), acute rejection (3 cases), infection (2 cases), and cardiovascular event (2 cases). Significant risk factors for graft loss were donor age (P < .01) and NIDDMN (P < .01). CONCLUSION: Underlying NIDDMN before KTx was a significant risk factor for long-term graft function. Immunologic factors and nonimmunologic factors influenced the long-term outcomes in patients with underlying NIDDMN.


Assuntos
Diabetes Mellitus Tipo 2/complicações , Previsões , Rejeição de Enxerto/epidemiologia , Sobrevivência de Enxerto , Falência Renal Crônica/cirurgia , Transplante de Rim , Doadores de Tecidos , Aloenxertos , Feminino , Humanos , Japão/epidemiologia , Falência Renal Crônica/mortalidade , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Taxa de Sobrevida/tendências
7.
Transplant Proc ; 44(1): 83-6, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22310586

RESUMO

BACKGROUND: Renal transplantation (RTx) in carriers of human T-cell lymphotropic virus type 1 (HTLV-1) has a risk of developing overt leukemia upon immunosuppression. Although there have been a few reports of such cases, it is unclear HTLV-1 carrier if patients on the modern immunosuppressants would develop HTLV-1-associated myelopathy or adult T-cell leukemia lymphoma. METHODS: We retrospectively reviewed the clinical outcomes of RTx in nine HTLV-1 carriers to assess a risk of developing leukemia from 2002 to 2011 using immunosuppression with a calcineurin inhibitor, mycophenolate mofetil (MMF), and steroid. The anti-CD25 monoclonal antibody basiliximab was used for induction. In two cases of ABO-incompatible RTx, the rituximab was also administered before RTx. RESULTS: The ratio of male to female subjects was 2 to 7 with an overall mean recipient age of 54.3 ± 8.1 years. We prescribed cyclosporine (n = 5) or tacrolimus (n = 4). There was only one graft loss due to the death caused by aspiration pneumonia with a functioning graft. No one developed overt leukemia with combined treatment with MMF, basiliximab and rituximab. CONCLUSION: We concluded that RTx in HTLV-1 carriers could be performed using a modern immunosuppressive regimen, without the risk of developing leukemia.


Assuntos
Infecções por HTLV-I/complicações , Vírus Linfotrópico T Tipo 1 Humano/patogenicidade , Imunossupressores/administração & dosagem , Transplante de Rim , Idoso , Quimioterapia Combinada , Feminino , Sobrevivência de Enxerto , Infecções por HTLV-I/diagnóstico , Infecções por HTLV-I/mortalidade , Vírus Linfotrópico T Tipo 1 Humano/isolamento & purificação , Humanos , Imunossupressores/efeitos adversos , Japão , Transplante de Rim/efeitos adversos , Transplante de Rim/mortalidade , Leucemia-Linfoma de Células T do Adulto/etiologia , Masculino , Pessoa de Meia-Idade , Paraparesia Espástica Tropical/etiologia , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Análise de Sobrevida , Fatores de Tempo , Resultado do Tratamento , Ativação Viral
8.
Transplant Proc ; 44(3): 629-31, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22483455

RESUMO

OBJECTIVE: We assessed the impact of hypertension on renal transplant function and survival in the past decade after introduction of mycophenolate mofetil and rituximab. METHODS: We examined the 184 patients who underwent renal transplantation from March 1982 to September 1999 and presented at our outpatient clinic from 2001 to 2011. They were divided into group 1 with mean systolic blood pressure (mSBP) >130 mm Hg and Group 2 with mSBP <130 mm Hg. We compared mean serum creatinine (sCr) levels for 9 years and 12-year actuarial graft survival rates. Risk factors for graft survival were assessed by Cox regression analysis. RESULTS: There were 75 group 1 and 109 group 2 recipients. The mean sCr level of group 1 was 1.59 ± 0.12 mg/dL and that of group 2 1.54 ± 0.10 mg/dL (P < .0001). Of note was that mean sCr levels of group 1 started to increase about 3 years after transplantation. Although 5-year graft survival rates of both groups were 100%, 9- and 12-year rates among group 1 were 97.3% and 90.5%, respectively, whereas among group 2 they were 99.1% and 98.1%, respectively (P = .0195). Cox univariate and multivariate analyses showed mean SBP to be the only significant risk factor for graft survival (P < .05). CONCLUSIONS: We concluded that the hypertensive group showed deteriorating renal function from around 3 years after transplantation that lowered graft survival afterward, resulting in a clear distinction from the nonhypertensive group at around 10 years after transplantation. Mean SBP was a significant risk factor for graft survival. Hypertension may be a surrogate for a poor renal graft prognosis in the long run.


Assuntos
Hipertensão/fisiopatologia , Transplante de Rim , Adulto , Idoso , Creatinina/sangue , Feminino , Sobrevivência de Enxerto , Humanos , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Transplante Homólogo
9.
Am J Transplant ; 7(3): 609-17, 2007 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-17217439

RESUMO

Outcomes of renal transplantation from donation after cardiac death (DCD) donors over 30 years were analyzed. Between 1975 and 2004, 256 renal transplantations from DCD donors were performed. The recipients were divided into four groups according to a time period as follows: 1975-1979 (Group 1; n = 18), 1980-1989 (Group 2; n = 81), 1990-1999 (Group 3; n = 84) and 2000-2004 (Group 4; n = 73). Of the 256 transplanted kidneys from DCD donors, 38 (15%) functioned immediately after transplantation. The incidence of delayed graft function (DGF) was 72%. Warm ischemic time and total ischemic time were 7.4 +/- 9.4 min and 11.9 +/- 5.6 h, respectively. The overall graft survival rates at 1, 5 and 10 years were 80%, 72% and 53%, respectively. Graft survival rates in each group have continually improved over time (5-year graft survival; 23% vs. 64% vs. 74% vs. 91%, respectively). However, there was no significant difference in graft survival rates between the groups of patients who survived with a functioning graft for more than 1 year. A multivariate Cox regression analysis showed acute rejection and donor age to be independently associated with graft outcome. DCD donors are a valuable source of kidneys for transplantation with promising long-term outcomes.


Assuntos
Morte , Função Retardada do Enxerto/epidemiologia , Sobrevivência de Enxerto , Transplante de Rim , Doadores de Tecidos , Adulto , Cadáver , Função Retardada do Enxerto/mortalidade , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Taxa de Sobrevida , Obtenção de Tecidos e Órgãos , Resultado do Tratamento
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