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1.
Transplant Proc ; 49(3): 399-402, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28340799

RESUMO

BACKGROUND: Familial Mediterranean fever (FMF) is an autosomal-recessive autoinflammatory disorder manifested severely by systemic amyloidosis. It has been hypothesized that heterozygous carriers may also have susceptibility to certain symptoms or even diseases. Because the living kidney donors of patients with FMF are generally relatives of the kidney recipients, there is a high possibility that the donors will have a heterozygous mutation of the FMF gene. The goal of this study was to investigate the long-term kidney function of donors who are carriers of the Mediterranean fever (MEFV) gene. METHODS: The medium- to long-term outcomes of 12 asymptomatic donors were compared with MEFV gene carriers and 24 non-FMF recipients' donors. RESULTS: Heterozygous carriers and the control group were similar with respect to age, sex, and follow-up period. The preoperative estimated glomerular filtration rate and 24-hour urine proteinuria levels were similar in the MEFV carrier and control groups. Four years after the donation, both groups had similar estimated glomerular filtration rates, but the change in 24-hour urine protein was statistically higher in the MEFV carrier group, and no significant change was observed in the control group (P = .004). At the end of the follow-up period, neither overt proteinuria nor kidney failure was seen in either group. CONCLUSIONS: This study showed that the medium- to long-term results of the kidney donors who are carriers of the MEFV gene seem to be safe. However, there was more of a tendency for an increase in proteinuria in the MEFV gene carriers compared with control subjects, which necessitated further long-term care for these donors.


Assuntos
Heterozigoto , Doadores Vivos , Mutação , Proteinúria , Pirina/genética , Adulto , Febre Familiar do Mediterrâneo/genética , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Risco
2.
Transplant Proc ; 49(3): 430-435, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28340806

RESUMO

BACKGROUND: Although tacrolimus is one of the essential drugs used for the prevention of rejection in kidney recipients, target trough levels are not well established. In this study, we aimed to investigate the association between average tacrolimus trough levels (TTLs) of the first month after transplantation and biopsy-proven acute rejection (BPAR) during the first 12 months after transplant. METHODS: A total of 274 patients who underwent kidney-alone transplantation between 2002 and 2014 were enrolled in the study. Average TTLs of the first month were assessed by means of receiver operating characteristic (ROC) curve analysis to discriminate patients with and those without BPAR. Univariate and multivariate Cox proportional hazards models were used to determine the effect of average TTLs of the first month on BPAR. RESULTS: According to ROC curve analysis, the highest area under the curve (AUC) was obtained from 8 ng/mL (AUC = 0.73 ± 0.11; 95% confidence interval [CI], 0.62-0.84). Forty-two (31.8%) of the 132 patients with average TTLs <8 ng/mL and 13 (9.1%) of 142 patients with ≥8 ng/mL had BPAR during the first 12 months after transplant (P < .001). In univariable analysis, average TTLs of the first month <8 ng/mL were associated with higher risk of BPAR (P < .001), and the significance remained in Cox multivariable analysis (hazard ratio, 2.79; 95% CI, 1.76-3.82; P = .001). No significant differences were observed in the glomerular filtration rate, cytomegalovirus, BK viremia, or BK nephropathy between groups at post-transplant month 12. CONCLUSIONS: Keeping the average TTLs of the first month after transplantation at ≥8 ng/mL not only prevents BPAR occurrence but also minimizes the toxic effects of the use of a single-trough level.


Assuntos
Rejeição de Enxerto/diagnóstico , Imunossupressores/sangue , Transplante de Rim , Tacrolimo/sangue , Adulto , Biópsia , Feminino , Taxa de Filtração Glomerular , Rejeição de Enxerto/prevenção & controle , Humanos , Imunossupressores/uso terapêutico , Rim/patologia , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Curva ROC , Tacrolimo/uso terapêutico
3.
Transplant Proc ; 49(3): 505-508, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28340822

RESUMO

BACKGROUND: Hyperuricemia is a common complication in renal transplant recipients. Recent studies have suggested that hyperuricemia may contribute to the deterioration of graft function. METHODS: In this study, we aimed to investigate the risk factors related to hyperuricemia and the effects of hyperuricemia on graft dysfunction, graft survival, cardiovascular events, and mortality rates. Between the years 2005 and 2016, 141 renal transplantation patients with at least 5 years of follow-up were included in this retrospective cohort study. Multi-linear regression analysis was used to determine the relationship between mean serum uric acid level and estimated glomerular filtration rate (eGFR). RESULTS: The average transplant age was 37.1 ± 12.1 years and the average follow-up time was 83.09 ± 20.30 months; the prevalence of patients with hyperuricemia was 39 (27.6%). The mean uric acid levels were higher in women (P < .001) in the condition of dyslipidemia (P = .026), ß-blocker usage (P = .002), and thiazide diuretics (P = .020). Patients with hyperuricemia (P < .001), new-onset hypertension (P = .027), ß-blocker usage (P = .005), and thiazide diuretics (P = .040) had statistically different eGFR levels than other recipients. Multivariant regression analyses showed that eGFR levels after transplantation were correlated with mean uric acid levels (ß = -0.46, P = .001), donor age (ß = -0.18, P = .048), recipient age (ß = -0.28, P = .0003), and mean hemoglobin levels (ß = 0.31, P = .003). CONCLUSIONS: There was no difference in graft loss, general mortality, and cardiovascular events between normo-uricemic and hyperuricemic groups. Increased uric acid levels contribute to eGFR decline in patients with renal transplantation. On the other hand, effects of uric acid levels on graft survival, cardiovascular events, and general mortality are still controversial.


Assuntos
Sobrevivência de Enxerto/fisiologia , Hiperuricemia/epidemiologia , Hiperuricemia/etiologia , Transplante de Rim/efeitos adversos , Adulto , Estudos de Coortes , Feminino , Taxa de Filtração Glomerular/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Retrospectivos , Fatores de Risco , Ácido Úrico/sangue
4.
Transplant Proc ; 49(3): 532-536, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28340828

RESUMO

BACKGROUND: BK virus is the cause of nephropathy, which can progress to graft loss after kidney transplantation. In this study, we aimed to investigate the prevalence and risk factors of BK viremia in patients with kidney transplantation at our center. METHODS: This was a retrospective single-center study. We included recipients transplanted between 2010 and 2015. Patients were stratified according to BK virus DNA follow-up values into three groups (0-999 copies/mL, 1000-9999 copies/mL and ≥10,000 copies/mL). The parametric t test and the non-parametric χ2 test were used to detect differences between groups. Multivariate analysis was used to identify risk factors for BK viremia. RESULTS: One hundred eighty-three patients were included in the study, with mean follow-up time of 33.6 ± 14.9 months. BK viremia prevalence was found 15.8% (n = 29), and time to detection of viremia was 7.6 months. Cadaveric transplantation and matching human leukocyte antigen (HLA) A24 and HLA B55 subgroups were found to be independent risk factors for BK viremia [odds ratio (OR), 3.65; 95% confidence interval (CI), 1.42-9.39; P < .001; OR, 4.94; 95% CI, 1.84-13.2; P < .001 and OR, 14.03; 95% CI, 1.07-183.5; P = .04, respectively]. Risk factors for BKV level ≥10,000 copies/mL cadaveric transplantation, male sex, and HLA A24 matching (OR, 4.53; 95% CI, 1.49-13.7; P < .001; OR, 3.47; 95% CI, 1.11-10.86; P = .03 and OR, 3.63; 95% CI, 1.08-12.1; P = .03, respectively). CONCLUSIONS: Patients should be followed more carefully for BK viremia who have cadaveric transplantation, are male, and have matching in certain HLA groups, which were independent risk factors in the present study. Our results are important to individualize screening methods and provide early diagnosis in our country.


Assuntos
Vírus BK/isolamento & purificação , Transplante de Rim/efeitos adversos , Infecções por Polyomavirus/etiologia , Infecções Tumorais por Vírus/etiologia , Viremia/etiologia , Adulto , Diagnóstico Precoce , Feminino , Humanos , Nefropatias/diagnóstico , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/virologia , Prevalência , Estudos Retrospectivos , Fatores de Risco , Transplante Homólogo , Turquia , Viremia/diagnóstico
5.
Bone Marrow Transplant ; 51(5): 623-8, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26457910

RESUMO

Allogeneic hematopoietic cell transplantation (alloHCT) may be the only curative option for some older adults with hematologic malignancies, and its associated risks of significant morbidity and mortality warrant a clear, informed decision-making process. As older adults have not been transplanted routinely until recent years, younger people have been the prototypical group around whom the current process has developed. Yet, this process is applied to older adults who have different considerations than younger patients when making their transplant decision. Older adults do not have the open-ended lives of younger patients and are entitled to consider how to spend their remaining time. They also possess maturity and experience, and with proper knowledge, they can make informed choices rather than moving forward in the transplant process unaware. Notably, older patients face similar problems with the informed decision-making process in nephrology. Strategies such as providing education about alloHCT gradually and repeatedly during induction, presenting recent knowledge from the literature in plain language, and utilizing a team approach to patient education may help older adults make the best decision about transplant in light of their situation and values. Understanding when and how older adults decide on alloHCT is an important first step to further exploring this problem.


Assuntos
Tomada de Decisões/ética , Neoplasias Hematológicas/terapia , Transplante de Células-Tronco Hematopoéticas/ética , Fatores Etários , Idoso , Comportamento de Escolha , Serviços de Saúde para Idosos , Humanos , Transplante Homólogo
6.
Transplant Proc ; 47(6): 1688-91, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26293034

RESUMO

BACKGROUND: Renal transplantation is the best choice for the treatment of dialysis patients with end-stage renal failure because it provides better quality of life and more life time. However, despite successful surgical techniques, immunological issues in kidney transplantation are not completely resolved. Thus, after transplantation, patients must be followed up closely. Although patient follow-up with the use of creatinine and renal biopsy are common, it is thought that biopsy is too invasive and that creatinine is unreliable. Hence, new parameters that correlate with the patient's immunological condition are needed in clinical monitoring. METHODS: One of the biomarkers that has been studied recently is neutrophil gelatinase-associated lipocalin (NGAL). Its diagnostic value in cases of acute renal failure, delayed graft function, and IgA nephropathy is widely investigated. However, data are insufficient as to whether NGAL can be used for follow-up in the chronic process after renal transplantation. We aimed to investigate the predictive value of NGAL in terms of rejection in donor-specific antibody (DSA)-positive and DSA-negative renal transplant patients. Ninety patients were included. RESULTS: We found that rejection rates were higher in patients whose NGAL values were ≥ 50 and DSA-positive. Delayed graft function was seen more frequently in patients whose NGAL values were ≥ 50. CONCLUSIONS: An increase in NGAL level does not always indicate renal injury because NGAL is also an acute-phase reactant. NGAL cannot be used alone to diagnose rejection, but, if NGAL level is high, it is necessary to study DSA, and sub-clinical rejection must be researched.


Assuntos
Proteínas de Fase Aguda/metabolismo , Função Retardada do Enxerto/imunologia , Falência Renal Crônica/cirurgia , Transplante de Rim , Lipocalinas/metabolismo , Proteínas Proto-Oncogênicas/metabolismo , Doadores de Tecidos , Proteínas de Fase Aguda/imunologia , Adulto , Biomarcadores/sangue , Função Retardada do Enxerto/metabolismo , Feminino , Humanos , Lipocalina-2 , Lipocalinas/imunologia , Masculino , Proteínas Proto-Oncogênicas/imunologia
7.
Transplant Proc ; 47(5): 1269-72, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26093696

RESUMO

BACKGROUND: In Turkey, according to the directions of National Organ and Tissue Transplant Coordination System, a system has been established since 2008 of urgency priority for kidney transplantation in cases with imminent lack of access for either hemodialysis or peritoneal dialysis. In this study, we compared patient and graft outcomes between patients on the national waiting list having urgency priority for kidney transplantation (UKT) and those having the other kidney from the same deceased donor (control group). METHODS: We examined retrospective data of patients, who underwent transplantation under urgency priority allocation in Turkey from 2010 to 2014 and compared that group with other patients receiving kidney transplants from the same deceased donors (control group). Then we compared these patients for early and long-term patient and graft outcomes. RESULTS: Forty-seven patients had UKT, and 40 patients received transplants from the same deceased donors. Mean follow-up of patients after transplantation was 18 ± 12 months. Eight patients with UKT and 4 patients in the control group lost their grafts. At follow-up, 7 patients died in the UKT group, and 4 patients died in the control group. Patient survival in the UKT group was 90% at 1 year and 83% at 2 years, and in the control group was 93% at 1 year and 84% at 2 years (P = .384). Graft survival was 87% at 1 year and 81% at 2 years in UKT, and 91% at both 1 and 2 years in the control group (P = .260). CONCLUSIONS: Although patients with UKT showed lower graft and patient survivals than the control group, the difference was statistically nonsignificant. UKT can be an obligatory treatment model for patients with lack of vascular or peritoneal access for dialysis.


Assuntos
Alocação de Recursos para a Atenção à Saúde , Transplante de Rim , Seleção de Pacientes , Listas de Espera , Adulto , Idoso , Feminino , Seguimentos , Sobrevivência de Enxerto , Humanos , Transplante de Rim/mortalidade , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Turquia
8.
Transplant Proc ; 47(5): 1429-32, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26093735

RESUMO

Kidney transplantation (KT) is the best available therapy for patients with end-stage renal disease. Infectious complications are a common cause of morbidity and mortality. In this study, we evaluated the risk factors and outcomes of infectious complications in the first year after transplantation. This is a retrospective and observational study of kidney transplant recipients at Ankara University's Ibni Sina Hospital between January 2009 and August 2013. A total of 206 kidney transplant recipients were evaluated. In 129 patients, 298 infectious episodes occurred: 55 (26.7%) had 1; 33 (16%) 2; 19 (9.2%) 3; 7 (3.4%) 4; and 15 (7.3%) had 5 or more infectious episodes. The most common bacterial infection was urinary tract infection (128, 42.9%). Only 4 urinary tract infection episodes (3.1%) were associated with bacteriemia. Seventeen patients (5.7%) had bacteremia. Viral infections after transplantation were CMV infection (10.1%), BK virus infection (5.7%), and zona zoster (1.1%). Deceased donor kidney transplantation was the independent risk factor. Mean follow-up period was 66 months and was the same for the patients with and without infections. There was no significant difference in 5-year survival and creatinine levels at the last follow-up (logrank P = .409). Infections are the second most common cause of mortality in KT patients. The successful treatment of these complications and effective prophylaxis may decrease these complications.


Assuntos
Doenças Transmissíveis/mortalidade , Falência Renal Crônica/complicações , Transplante de Rim/mortalidade , Adulto , Vírus BK , Bacteriemia/etiologia , Infecções Bacterianas/etiologia , Doenças Transmissíveis/etiologia , Creatinina/sangue , Infecções por Citomegalovirus/virologia , Feminino , Seguimentos , Herpes Zoster , Humanos , Falência Renal Crônica/mortalidade , Masculino , Pessoa de Meia-Idade , Infecções por Polyomavirus/virologia , Estudos Retrospectivos , Fatores de Risco , Análise de Sobrevida , Infecções Tumorais por Vírus/virologia , Infecções Urinárias/etiologia
9.
Transplant Proc ; 47(5): 1442-4, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26093738

RESUMO

Although pregnancy after kidney transplantation has been considered as high risk for maternal and fetal complications, it can be successful in properly selected patients. It is well known that pregnancy can induce changes in the plasma concentrations of some drugs; however, there has been very limited information about tacrolimus pharmacokinetics during pregnancy. In this study, we evaluated the tacrolimus doses, blood levels, and the outcomes of pregnancies in kidney allograft recipients. From 2004 to 2014, we found 16 pregnancies in 12 kidney allograft recipients at our center. We reviewed the files and data reports including fetal outcomes, graft function, complications, tacrolimus trough levels, and doses. We analyzed the tacrolimus trough levels and doses before pregnancy, during pregnancy (monthly), and in the postpartum period. Throughout the pregnancy, we aimed to achieve tacrolimus trough levels between 4 and 7 ng/mL. All patients were on triple immunosuppression, including tacrolimus, azathioprine, and prednisolone. In total, 11 of 16 (68.7%) pregnancies were successful, with a mean weight gain of 12.5 ± 1.66 kg. One patient developed gestational diabetes mellitus and 2 had preeclampsia. Although 5 of 11 babies were found to have low birth weight, 4 of these were premature. Two patients lost their grafts, 1 due to acute rejection and the second due to progression of chronic allograft dysfunction. We have shown that tacrolimus doses need to be significantly increased to keep appropriate trough levels during pregnancy (the doses: before, 3.20 ± 0.9 mg/day; first trimester, 5.03 ± 1.5; second trimester, 6.50 ± 1.8; third trimester, 7.30 ± 2.3; post-partum, 3.5 ± 0.9). In conclusion, the dose of tacrolimus needs to be increased to provide safe and stable tacrolimus trough levels during pregnancy. Although pregnancy can be successful in most cases, it should be kept in mind that there is an increased risk of maternal and fetal complications, including allograft loss, low birth weight, spontaneous abortus, and preeclampsia.


Assuntos
Imunossupressores/administração & dosagem , Transplante de Rim , Gravidez de Alto Risco/efeitos dos fármacos , Tacrolimo/administração & dosagem , Adulto , Azatioprina/administração & dosagem , Contraindicações , Relação Dose-Resposta Imunológica , Feminino , Humanos , Terapia de Imunossupressão , Lactente , Prednisolona/administração & dosagem , Gravidez , Complicações na Gravidez/epidemiologia , Complicações na Gravidez/prevenção & controle , Resultado da Gravidez , Gravidez de Alto Risco/sangue
10.
Transplant Proc ; 45(3): 917-8, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23622586

RESUMO

Renal transplantation is the treatment of choice for children with end-stage renal disease. The aim of this study was to evaluate retrospectively of our 37 pediatric renal allograft recipients, including 20 boys and 17 girls from July 2007 to August 2012. The overall mean age at transplantation was 12.16 ± 4.25 years. Three patients (8.1%) were transplanted preemptively; two were ABO-incompatible transplantations. The majority of recipients received living donor grafts (81%). The mean duration of follow-up was 25.10 ± 14.95 months. Seven acute rejection episodes were observed in 6 patients (16.2%). Eleven recipients developed serious viral infections: cytomegalovirus (n = 8), parvovirus (n = 2), BK virus (polyoma hominis 1) (n = 2), or Ebstein-Barr virus (n = 1). Three patients died; one from posttransplant lymphoproliferative disease, one from primary disease recurrence with infection, and one from sepsis. In conclusion, kidney transplantation is the treatment of choice for end-stage renal disease. Infection was the major concern after this procedure.


Assuntos
Transplante de Rim , Adolescente , Criança , Feminino , Humanos , Masculino , Estudos Retrospectivos
11.
Transplant Proc ; 45(3): 923-5, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23622588

RESUMO

OBJECTIVE: Hepatitis B surface antigen (HBsAg)-positive donors are not accepted by many transplant centers as a kidney source owing to risk of transmission of hepatitis B; however, some reports show that these donors can be used under a special protocol. Herein, we report our cases of kidney transplantation from HBsAg(+) donors to HbsAg(-) recipients. METHODS: In the years 2010-2012, we transplanted 4 kidneys from 4 HBsAg(+) donors to HBsAg(-) recipients. They were all living related. All antiHBs(-) recipients were vaccinated before transplantation and became HBsAg(-), anti-HB core immunoglobulin G antibody negative [antiHBcIg(-)], and antiHBs(+). Pretransplantation antiHBs titers were targeted to be >100 IU. If lower, hepatitis B Ig was used at the time of transplantation. One patient received hepatitis B Ig at the time of transplantation (owing to titer of 62 IU/L antiHBs). Lamivudine was prescribed for all kidney allograft recipients after transplantation. RESULTS: Two patients had special induction treatment including rituximab, intravenous immunoglobulin, and plasmapheresis owing to the presence of donor-specific antibody. CONCLUSIONS: All patients became antiHBcIgG(+) at 1-6 months after the transplantation, despite the presence of antiHBs positivity, which might be explained by transmission of hepatitis B virus through the graft.


Assuntos
Hepatite B , Imunoglobulina G/imunologia , Transplante de Rim , Doadores de Tecidos , Proteínas do Core Viral/imunologia , Adulto , Feminino , Humanos , Transplante de Rim/imunologia , Masculino
12.
Transplant Proc ; 45(3): 919-22, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23622587

RESUMO

An increased number of sensitized patients await kidney transplantation (KTx). Sensitization has a major impact on patient mortality and morbidity due to prolonged waiting time and may preclude live donor transplantation. However, recent reports have shown that KTx can be performed successfully using novel immunosuppressive protocols. This study presents our experience with patients displaying donor-specific antibody (DSA) (+). We enrolled 5 lymphocyte cross-match (LCM) negative (complement-dependent cytotoxicity) and panel-reactive antibody (PRA) plus DSA-positive patients mean fluorescein intensity [MFI] > 1000) who underwent living kidney donor procedures. All subjects were females and their mean age was 36.7 years. In our protocol, we started mycophenolate mofetil (2 g/d), tacrolimus (0.01 mg/kg) and prednisolone (0.5 mg/kg) on day -6. We performed 2 sessions of total plasma exchange (TPE) with albumin replacement and administered 2 doses of IVIG (5 g/d). On day -1, we added rituximab (200 mg). On the operation day and on day +4, the patients received doses of basiliximab. Serum samples were taken on days -6, 0, and 30 as well as at 1 year after transplantation. All patients displayed immediate graft function. Mean basal DSA titer was 5624 MFI. After desensitization, the MFI titers decreased at the time of transplantation to 2753 MFI, and were 2564 MFI at the 1st month and 802 MFI at 1st year. Three patients experienced acute rejection episodes (60%). After treatment for rejection, the average follow-up was 17 months and last creatinine levels were 0.6-0.8 mg/dL (minimum-maximum). In conclusion, KTx can be succesfully performed in sensitized patients displaying DSA. However, there seems to be a greater acute rejection risk. There is no consensus regarding adequate doses of IVIG or plasmapheresis treatments; furthermore, more studies are needed to clarify the safe MFI titer of the DSA.


Assuntos
Transplante de Rim , Adulto , Feminino , Humanos , Imunossupressores/uso terapêutico , Transplante de Rim/imunologia , Pessoa de Meia-Idade , Fatores de Risco
13.
Transplant Proc ; 45(3): 935-9, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23622592

RESUMO

OBJECTIVE: Along with immunologic mechanisms, intrarenal renin-angiotensin system (RAS) activation has been suggested to play a role in the development and progression of chronic allograft injury. In various glomerular diseases, urinary angiotensinogen (AGT) level is a good indicator for the activation of intrarenal RAS. In this study, we aimed to investigate the parameters associated with urinary AGT level in patients with kidney transplantation. METHODS: Seventy renal transplant patients with stable graft function (≥ 6 months after transplantation, serum creatinine level <2 mg/dL) and 21 healthy volunteers were included in the study. Patients were taking standard triple immunosuppressive treatment. Demographic characteristics of patients and healthy volunteers, drug use, and 24-hour ambulatory blood pressure measurements were recorded. Morning second urine and fasting blood samples were taken from all participants. Serum biochemical markers and urine Na, K, uric acid, creatinine, and protein levels were measured. Urinary AGT levels were determined by enzyme-linked immunosorbent assay. RESULTS: Mean systolic and diastolic blood pressures in patients with renal transplantation were higher than in healthy volunteers. Both urinary AGT-urinary creatinine ratio (UAGT/UCr) and urinary protein-urinary creatinine ratio (UPro/UCr) were higher in kidney transplant patients than in healthy volunteers (P < .01; P < .0001; respectively). In patients with renal transplantation, UAGT/UCr was positively correlated with UPro/UCr and negatively correlated with estimated glomerular filtration rate (eGFR) (r = 0.738; P = .01; and r = -0.397; P = .01; respectively). There was no correlation between UAGT/UCr and other study parameters, including bood pressure levels. CONCLUSIONS: Our findings indicate that high urinary excretion of AGT is associated with proteinuria and lower eGFR in kidney transplant recipients without overt chronic allograft injury. These preliminary results encourage us to design a long-term longitudinal analysis using urinary AGT along with multiple markers to obtain early diagnosis and to predict the prognosis of chronic allograft dysfunction.


Assuntos
Angiotensinogênio/urina , Transplante de Rim , Proteinúria/urina , Adolescente , Adulto , Idoso , Feminino , Humanos , Imunossupressores/administração & dosagem , Masculino , Pessoa de Meia-Idade , Adulto Jovem
14.
Transplant Proc ; 45(3): 940-3, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23622593

RESUMO

BACKGROUND: Hypertension (HT) is a common problem, observed frequently after kidney transplantation due to several causes. Posttransplantation HT increases the incidence of both cardiovascular diseases and allograft failure. Although a low sodium diet is strongly advised, the relationship between it and posttransplantation HT has not been well studied in transplant patients. METHODS: Thirty-eight kidney transplant patients with stable allograft function ≥ 6 months after transplantation with a history of blood pressures ≥ 120/80 mm Hg despite antihypertensive therapy were included in this study. Office and ambulatory blood pressure monitoring (ABPM) were performed before the study. We measured serum biochemistries, hemograms, as well as 24-hour urinary excretions of sodium, potassium, calcium, magnesium, creatinine, and protein levels. After injection of low sodium diet of ≤ 80 mmol/d arranged by a dietician for 14 days, we repeated the measurements to compare the results. RESULTS: After 14 days, the low sodium diet decreased the office systolic (from 132.4 ± 18.8 to 123.7 ± 13.4 mm Hg; P < .001) and diastolic (from 87.3 ± 10.8 to 81.3 ± 7.0 mm Hg; P < .001) blood pressures with decreased sodium excretion (from 177.2 ± 72.7 to 85.3 ± 37.7 mmol/L; P < .001) in the 24-hour urine. It also decreased the average systolic (from 125.3 ± 11.1 to 120.5 ± 9.1 mm Hg) and diastolic (from 80.7 ± 8.3 to 76.9 ± 6.6 mm Hg, P < .001) blood pressures in the 24-hour ABPM. Nighttime systolic (from 120.7 ± 10.9 to 113.9 ± 19.7 mm Hg) and diastolic (from 77.0 ± 9.4 to 74.1 ± 7.8 mm Hg) blood pressures by 24-hour ABPM were significantly decreased (P < .01; P < .05). The low sodium diet had no effect on dipper versus nondipper HT development. Although sodium, calcium, and magnesium excretions in the 24-hour urine were decreased, there was no change in potassium and protein excretion levels. CONCLUSIONS: Daily sodium intake was extremely higher than recommended levels among kidney allograft recipients with HT. A low dietary sodium intake (80 mmol/d) combined with antihypertensive treatment controlled blood pressure efficiently by office and 24-hour ABPM readings.


Assuntos
Hipertensão/induzido quimicamente , Transplante de Rim , Sódio/administração & dosagem , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Transplante Homólogo
15.
Transplant Proc ; 45(3): 953-5, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23622596

RESUMO

INTRODUCTION: Pericardial exposure can be see in chronic kidney disease, but constrictive pericarditis (CP) development, which is usually present with signs of right-sided heart failure is rare. In renal transplant recipients CP can lead to graft dysfunction and serious liver disease. We present herein 3 such CP patients. PATIENT 1: A 37-year-old male patient with end-stage renal disease (ESRD) due to membranoproliferative glomerulonephritis was on chronic hemodialysis (HD). He underwent living donor kidney transplantation in 1995. In 2006 he was admitted with complaints of shortness of breath, weakness, and abdominal distention. PATIENT 2: A 17-year-old male patient with ESRD due to vesicoureteral reflux had 6 months of HD and underwent living donor kidney transplantation in 2008. Six months after transplantation, he showed leg edema, massive ascites, hepatosplenomegaly, and pretibial edema. PATIENT 3: A 52-year-old male patient was 21 years after HD initiation when cadaveric donor kidney transplantation was performed in August 2011. Four months after transplantation, he presented with a shortness of breath and fatigue. Echocardiography revealed 2-3 degree aortic regurgitation and increased pericardial brightness. CONCLUSION: All patients underwent right-sided heart catheterization, leading to a diagnosis of constrictive pericarditis, requiring total pericardiectom. Pathological examination of the pericardium showed typical diffuse fibrosis.


Assuntos
Transplante de Rim/efeitos adversos , Pericardite/etiologia , Adolescente , Adulto , Humanos , Masculino , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios X
16.
Transplant Proc ; 45(3): 958-60, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23622598

RESUMO

The risk of renal transplanation patients developing de novo malignancy is increased 100-fold compared with the healthy nontransplantation population. Renal cell carcinoma (RCC) arising from native kidneys is diagnosed among up to 4.6% of the renal transplant recipients as a consequence of immunosuppression. These tumors tend to behave more aggressively.(1) Although tumors occurring in allografted kidneys can be treated by partial (to save functional graft) or total nephrectomy, there is a paucity of data the outcomes. From 1978 to 2012, we performed 804 kidney transplantations including two cases in which RCC arose from the allografted kidney, both of which were treated with nephron-sparing surgery. The first patient has been followed for 30 months with a well functioning graft without an RCC recurrence. The second patient has returned to dialysis after 6 months due to an insufficient remnant nephron mass. In conclusion, nephron-sparing surgery is a novel alternative to total nephrectomy for allograft RCC. The remaining kidney can preserve function and the patient may not need chronic dialysis.


Assuntos
Carcinoma de Células Renais/cirurgia , Neoplasias Renais/cirurgia , Transplante de Rim , Néfrons/cirurgia , Adulto , Feminino , Humanos , Masculino , Transplante Homólogo
17.
Am J Forensic Med Pathol ; 33(1): 58-60, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20634668

RESUMO

The diagnostic criteria of Meigs syndrome are the presence of ascites and hydrothorax in association with a benign solid ovarian tumor and spontaneous resolution of ascites and pleural effusion on tumor resection. The case of a middle aged woman who died suddenly at home without significant history of illness is presented. Autopsy found a large left ovarian fibroma (which was confirmed histologically), ascites and bilateral pleural effusion with collapsed lungs. The commonest gynecologic causes of sudden death are ruptured ectopic pregnancy and induced abortions. Two case reports of death associated with Meigs syndrome were identified in the literature; both were diagnosed before the patients died. Literature search found no publication on "sudden death associated with Meigs syndrome". This is probably the first report of sudden death associated with Meigs syndrome. The terminal cause of death in this case was collapsed lungs (atelectasis). The autopsy investigation of ascites and or pleural effusion associated with an ovarian mass or lesion should always include consideration of Meigs syndrome.Sudden death associated with Meigs syndrome (undiagnosed in life) ina middle aged female is described, and selected literature on the condition reviewed.


Assuntos
Morte Súbita/etiologia , Síndrome de Meigs/diagnóstico , Ascite/patologia , Feminino , Patologia Legal , Humanos , Leiomioma/patologia , Pulmão/patologia , Pessoa de Meia-Idade , Derrame Pleural/patologia , Atelectasia Pulmonar/patologia , Neoplasias Uterinas/patologia
18.
Transplant Proc ; 41(5): 1630-3, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19545695

RESUMO

Renal transplantation is widely used to treat patients with end-stage renal disease. Atherosclerosis is an important posttransplantation risk factor for renal transplant recipients. Subsequent to transplantation low-density lipoprotein (LDL) particles become susceptible to oxidative modification, which results in atherosclerosis. Therefore, the aim of our study was to investigate differences in the susceptibility of LDL particles to oxidation by analyzing LDL fatty acid levels among renal transplant recipients. The changes in lag phases and fatty acid levels of LDL were observed over 4 months among renal transplant recipients treated with Cyclosporine (CsA; n = 7) or Tacrolimus (FK-506; n = 9). We also analyzed cholesterol and triglyceride levels of patients and healthy controls. The lag phase at the 60th day after transplantation was significantly shorter than the results either before transplantation or among control subjects. In conclusion, a similar decrease in lag phase was observed in both above groups, but the FK-506-treated group showed a better lipid profile than the CsA-treated group.


Assuntos
Ciclosporina/uso terapêutico , Ácidos Graxos/sangue , Transplante de Rim/fisiologia , Lipoproteínas LDL/sangue , Tacrolimo/uso terapêutico , Colesterol/sangue , HDL-Colesterol/sangue , Ácidos Graxos não Esterificados/sangue , Humanos , Imunossupressores/uso terapêutico , Transplante de Rim/imunologia , Lipoproteínas LDL/efeitos dos fármacos , Oxirredução , Valores de Referência , Triglicerídeos/sangue
19.
Transplant Proc ; 39(10): 3131-4, 2007 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-18089338

RESUMO

BACKGROUND: Although infectious complications are the second most common cause of death after transplantation, there appears to be insufficient data regarding the impact of urinary tract infections (UTIs) on graft outcome and patient mortality and morbidity. In this study, we evaluated the incidence, risk factors, and long-term effects of UTIs on graft function. METHOD: We performed a retrospective cohort study reviewing the medical records of patients who received a renal transplant at our center from January 1999 to December 2006. All UTIs, risk factors, long-term graft function, graft loss, and death were recorded. Outcomes among patients with UTIs were compared with those without UTIs. RESULTS: Fifty-six of 136 patients (41.2%) had at least one UTI over a mean period of 38+/-25 months after transplantation. While there was a tendency toward graft loss among patients with UTIs (16.1% vs 6.3%, P=.08), there was no increased risk of death. The patients with UTIs displayed higher serum creatinine levels (1.7+/-1.4 vs 2.3+/-2.5 mg/dL, P=.07) compared to non-UTI patients in the long term. Upon multivariate analysis, female gender was the only risk factor for posttransplant UTIs. We did not determine any immunosuppressive drug as a risk factor for UTIs. The most frequent pathogens isolated in urine culture were Escherichia coli (n=72, 59.1%) and Klebsiella spp (n=21, 16.9%), and there were eight cases of bacteremia. CONCLUSION: UTIs are a frequent problem after kidney transplantation. Female recipients are at greatest risk. In the long-term, UTIs should be considered as a potential risk for poorer graft outcomes.


Assuntos
Transplante de Rim/efeitos adversos , Infecções Urinárias/epidemiologia , Adulto , Feminino , Humanos , Masculino , Diálise Peritoneal Ambulatorial Contínua , Complicações Pós-Operatórias/epidemiologia , Diálise Renal , Estudos Retrospectivos , Fatores de Risco , Falha de Tratamento , Resultado do Tratamento
20.
J Hum Hypertens ; 21(7): 558-63, 2007 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-17429447

RESUMO

Endothelial dysfunction plays an important role in the pathogenesis of preeclampsia. Increased number of circulating endothelial cells (CECs) have previously been reported after various diseases associated endothelial injury. The aim of this study was to evaluate the CECs in patients with preeclampsia and to demonstrate any association between CECs and homocysteine, which is another marker of vascular injury. The study included 20 preeclamptic, 15 hypertensive women, 15 healthy pregnant and 15 healthy non-pregnant women. All subjects had normal renal function. Systolic and diastolic blood pressures, serum homocysteine levels were measured. To isolate CECs, peripheral blood was first incubated with anti-CD-146 antibody and subsequently conjugated to immunomagnetic beads. Cells were stained with acridine and counted. Preeclamptic patients had elevated numbers of CECs (13.2+/-5.2 cells/ml) compared with hypertensive patients (6.9+/-0.8 cells/ml), healthy pregnants (5.2+/-1.4 cells/ml), and non-pregnant controls (4.0+/-1.8 cells/ml), (P<0.0001). Serum homocysteine level in preeclamptic patients (9.5+/-2.8 micromol/l) was significantly higher compared with healthy pregnants (6.0+/-0.6 micromol/l), was not different from hypertensive patients (11.5+/-2.3 micromol/l, P>0.05), but it was lesser compared with non-pregnant controls (12.2+/-3.3 micromol/l, P<0.0001). Also, significant correlation between CECs and systolic blood pressure (P<0.0001, r=0.63), diastolic blood pressure (P<0.0001, r=0.64) and serum homocysteine (P<0.01, r=0.55) levels were found in preeclamptic patients. CECs as a marker of endothelial injury were significantly higher in patients with preeclampsia than in hypertensive patients, healthy pregnants and normal controls. Further studies are needed for the prognostic and potential importance of CECs in preeclampsia.


Assuntos
Células Endoteliais/patologia , Homocisteína/sangue , Pré-Eclâmpsia/sangue , Adulto , Biomarcadores/sangue , Estudos de Casos e Controles , Endotélio Vascular/patologia , Feminino , Humanos , Hipertensão/sangue , Hipertensão/patologia , Pré-Eclâmpsia/patologia , Gravidez
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