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1.
Nephrol Dial Transplant ; 38(1): 56-65, 2023 Jan 23.
Artigo em Inglês | MEDLINE | ID: mdl-35998320

RESUMO

During conflicts, people with kidney disease, either those remaining in the affected zones or those who are displaced, may be exposed to additional threats because of medical and logistical challenges. Acute kidney injury developing on the battlefield, in field hospitals or in higher-level hospital settings is characterized by poor outcomes. People with chronic kidney disease may experience treatment interruptions, contributing to worsening kidney function. Patients living on dialysis or with a functioning graft may experience limitations of dialysis possibilities or availability of immunosuppressive medications, increasing the risk of severe complications including death. When patients must flee, these threats are compounded by unhealthy and insecure conditions both during displacement and/or at their destination. Measures to attenuate these risks may only be partially effective. Local preparedness for overall and medical/kidney-related disaster response is essential. Due to limitations in supply, adjustments in dialysis frequency or dose, switching between hemodialysis and peritoneal dialysis and changes in immunosuppressive regimens may be required. Telemedicine (if possible) may be useful to support inexperienced local physicians in managing medical and logistical challenges. Limited treatment possibilities during warfare may necessitate referral of patients to distant higher-level hospitals, once urgent care has been initiated. Preparation for disasters should occur ahead of time. Inclusion of disaster nephrology in medical and nursing curricula and training of patients, families and others on self-care and medical practice in austere settings may enhance awareness and preparedness, support best practices adapted to the demanding circumstances and prepare non-professionals to lend support.


Assuntos
Injúria Renal Aguda , Desastres , Humanos , Diálise Renal/efeitos adversos , Injúria Renal Aguda/etiologia , Rim , Conflitos Armados
2.
Nephrol Dial Transplant ; 38(10): 2407-2415, 2023 09 29.
Artigo em Inglês | MEDLINE | ID: mdl-37326036

RESUMO

BACKGROUND: Due to the Russian-Ukrainian war, some of the about 10 000 adults requiring dialysis in Ukraine fled their country to continue dialysis abroad. To better understand the needs of conflict-affected dialysis patients, the Renal Disaster Relief Task Force of the European Renal Association conducted a survey on distribution, preparedness and management of adults requiring dialysis who were displaced due to the war. METHODS: A cross-sectional online survey was sent via National Nephrology Societies across Europe and disseminated to their dialysis centers. Fresenius Medical Care shared a set of aggregated data. RESULTS: Data were received on 602 patients dialyzed in 24 countries. Most patients were dialyzed in Poland (45.0%), followed by Slovakia (18.1%), Czech Republic (7.8%) and Romania (6.3%). The interval between last dialysis and the first in the reporting center was 3.1 ± 1.6 days, but was ≥4 days in 28.1% of patients. Mean age was 48.1 ± 13.4 years, 43.5% were females. Medical records were carried by 63.9% of patients, 63.3% carried a list of medications, 60.4% carried the medications themselves and 44.0% carried their dialysis prescription, with 26.1% carrying all of these items and 16.1% carrying none. Upon presentation outside Ukraine, 33.9% of patients needed hospitalization. Dialysis therapy was not continued in the reporting center by 28.2% of patients until the end of the observation period. CONCLUSIONS: We received information about approximately 6% of Ukrainian dialysis patients, who had fled their country by the end of August 2022. A substantial proportion were temporarily underdialyzed, carried incomplete medical information and needed hospitalization. The results of our survey may help to inform policies and targeted interventions to respond to the special needs of this vulnerable population during wars and other disasters in the future.


Assuntos
Desastres , Refugiados , Feminino , Humanos , Adulto , Pessoa de Meia-Idade , Masculino , Diálise Renal , Estudos Transversais , Inquéritos e Questionários
3.
Nephrol Dial Transplant ; 38(9): 1960-1968, 2023 08 31.
Artigo em Inglês | MEDLINE | ID: mdl-36931903

RESUMO

People living with kidney disease are among the most vulnerable at times of natural or man-made disasters. In addition to their unpredictable course, armed conflicts impose a major threat given the disruption of infrastructure, sanitation and access to food, water and medical care. The ongoing war in Ukraine has once more demonstrated the importance of preparedness, organization, coordination and solidarity during disasters. People living with kidney disease face serious challenges given their dependence on life-sustaining treatment, irrespective of whether they remain in the war zone or are displaced internally or externally. This especially affects those requiring kidney replacement therapy, dialysis or transplantation, but also patients with other kidney diseases and the medical staff who care for them. Soon after the war started, the European Renal Association assigned a Renal Disaster Relief Task Force dedicated to support the people living with kidney disease and the nephrology community in Ukraine. This report summarizes the major challenges faced, actions taken and lessons learned by this task force. We anticipate that the experience will help to increase preparedness and mitigate the devastating effects of armed conflicts on the kidney community in the future and propose to establish an international collaboration to extend this effort to other parts of the world facing similar challenges.


Assuntos
Desastres , Nefropatias , Humanos , Ucrânia/epidemiologia , Diálise Renal , Rim , Nefropatias/epidemiologia , Nefropatias/terapia
4.
Nephrol Dial Transplant ; 36(11): 2094-2105, 2021 11 09.
Artigo em Inglês | MEDLINE | ID: mdl-34132811

RESUMO

BACKGROUND: Coronavirus disease 2019 (COVID-19) has exposed haemodialysis (HD) patients and kidney transplant (KT) recipients to an unprecedented life-threatening infectious disease, raising concerns about kidney replacement therapy (KRT) strategy during the pandemic. This study investigated the association of the type of KRT with COVID-19 severity, adjusting for differences in individual characteristics. METHODS: Data on KT recipients and HD patients diagnosed with COVID-19 between 1 February 2020 and 1 December 2020 were retrieved from the European Renal Association COVID-19 Database. Cox regression models adjusted for age, sex, frailty and comorbidities were used to estimate hazard ratios (HRs) for 28-day mortality risk in all patients and in the subsets that were tested because of symptoms. RESULTS: A total of 1670 patients (496 functional KT and 1174 HD) were included; 16.9% of KT and 23.9% of HD patients died within 28 days of presentation. The unadjusted 28-day mortality risk was 33% lower in KT recipients compared with HD patients {HR 0.67 [95% confidence interval (CI) 0.52-0.85]}. In a fully adjusted model, the risk was 78% higher in KT recipients [HR 1.78 (95% CI 1.22-2.61)] compared with HD patients. This association was similar in patients tested because of symptoms [fully adjusted model HR 2.00 (95% CI 1.31-3.06)]. This risk was dramatically increased during the first post-transplant year. Results were similar for other endpoints (e.g. hospitalization, intensive care unit admission and mortality >28 days) and across subgroups. CONCLUSIONS: KT recipients had a greater risk of a more severe course of COVID-19 compared with HD patients, therefore they require specific infection mitigation strategies.


Assuntos
COVID-19 , Falência Renal Crônica , Transplante de Rim , Humanos , Falência Renal Crônica/terapia , Transplante de Rim/efeitos adversos , Sistema de Registros , Diálise Renal , Fatores de Risco , SARS-CoV-2 , Transplantados
5.
Nephrol Dial Transplant ; 36(11): 2120-2129, 2021 11 09.
Artigo em Inglês | MEDLINE | ID: mdl-33909908

RESUMO

BACKGROUND: This study aims to examine the association of LIM zinc finger domain containing 1 (LIMS1) genotype with allograft rejection in an independent kidney transplant cohort. METHODS: We genotyped 841 kidney transplant recipients for the LIMS1 rs893403 variant by Sanger sequencing followed by polymerase chain reaction confirmation of the deletion. Recipients who were homozygous for the LIMS1 rs893403 genotype GG were compared with the AA/AG genotypes. The primary outcome was T cell-mediated or antibody-mediated rejection (TCMR or ABMR, respectively) and secondary outcome was allograft loss. RESULTS: After a median follow-up of 11.4 years, the rate of TCMR was higher in recipients with the GG genotype (n = 200) compared with the AA/AG genotypes (n = 641) [25 (12.5%) versus 35 (5.5%); P = 0.001] while ABMR did not differ by genotype [18 (9.0%) versus 62 (9.7%)]. Recipients with the GG genotype had 2.4 times higher risk of TCMR than those who did not have this genotype [adjusted hazard ratio2.43 (95% confidence interval 1.44-4.12); P = 0.001]. A total of 189 (22.5%) recipients lost their allografts during follow-up. Kaplan-Meier estimates of 5-year (94.3% versus 94.4%; P = 0.99) and 10-year graft survival rates (86.9% versus 83.4%; P = 0.31) did not differ significantly in the GG versus AA/AG groups. CONCLUSIONS: Our study demonstrates that recipient LIMS1 risk genotype is associated with an increased risk of TCMR after kidney transplantation, confirming the role of the LIMS1 locus in allograft rejection. These findings may have clinical implications for the prediction and clinical management of kidney transplant rejection by pretransplant genetic testing of recipients and donors for LIMS1 risk genotype.


Assuntos
Transplante de Rim , Proteínas Adaptadoras de Transdução de Sinal , Aloenxertos , Genótipo , Rejeição de Enxerto/etiologia , Rejeição de Enxerto/genética , Sobrevivência de Enxerto , Humanos , Transplante de Rim/efeitos adversos , Proteínas com Domínio LIM , Proteínas de Membrana , Linfócitos T , Transplantados
6.
Transpl Int ; 30(6): 579-588, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28236636

RESUMO

The presence of occlusion/near-occlusion of glomerular capillaries was recently added to the existing definition of glomerulitis (g). We retrospectively re-evaluated 135 renal allograft biopsies regarding g to ensure no antibody-damaged grafts were missed. Previous and revised g scores (pg and rg, respectively) were compared for clinicopathologic correlations. The g score did not change in 100 (74.1%) biopsies. Thirty-five (25.9%) biopsies were changed to a lower score. Sensitivity and specificity of pg and rg for the presence of donor-specific antibodies (DSA) were 76% vs. 58% and 70% vs. 79%, respectively. Pg score indicated graft loss with 65% sensitivity and 63% specificity, whereas rg showed 46% sensitivity and 71% specificity. Area under the curve (AUC) values in ROC analysis for DSA and graft loss were as follows: pg, 0.773; rg, 0.693; and pg, 0.635; rg, 0.577, respectively. A comparison of the two AUC values revealed a significant difference between pg and rg only for DSA (P = 0.0076). Pg and post-transplant time of biopsy independently predicted graft loss, whereas rg did not. In conclusion, revised g scores showed lesser sensitivity but higher specificity for DSA and graft loss. Recent definition of g missed antibody-mediated rejection in few cases, and it was not an independent predictor for graft loss.


Assuntos
Glomerulonefrite/diagnóstico , Oclusão de Enxerto Vascular/diagnóstico , Transplante de Rim/efeitos adversos , Adolescente , Adulto , Idoso , Especificidade de Anticorpos , Biópsia , Capilares/patologia , Feminino , Glomerulonefrite/etiologia , Glomerulonefrite/imunologia , Oclusão de Enxerto Vascular/etiologia , Oclusão de Enxerto Vascular/imunologia , Sobrevivência de Enxerto , Humanos , Isoanticorpos/metabolismo , Glomérulos Renais/irrigação sanguínea , Glomérulos Renais/imunologia , Glomérulos Renais/patologia , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Estudos Retrospectivos , Doadores de Tecidos , Adulto Jovem
7.
Kidney Int ; 85(5): 1049-57, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24107850

RESUMO

Disasters result in a substantial number of renal challenges, either by the creation of crush injury in victims trapped in collapsed buildings or by the destruction of existing dialysis facilities, leaving chronic dialysis patients without access to their dialysis units, medications, or medical care. Over the past two decades, lessons have been learned from the response to a number of major natural disasters that have impacted significantly on crush-related acute kidney injury and chronic dialysis patients. In this paper we review the pathophysiology and treatment of the crush syndrome, as summarized in recent clinical recommendations for the management of crush syndrome. The importance of early fluid resuscitation in preventing acute kidney injury is stressed, logistic difficulties in disaster conditions are described, and the need for an implementation of a renal disaster relief preparedness program is underlined. The role of the Renal Disaster Relief Task Force in providing emergency disaster relief and the logistical support required is outlined. In addition, the importance of detailed education of chronic dialysis patients and renal unit staff in the advance planning for such disasters and the impact of displacement by disasters of chronic dialysis patients are discussed.


Assuntos
Injúria Renal Aguda/prevenção & controle , Síndrome de Esmagamento/terapia , Planejamento em Desastres , Hidratação , Acessibilidade aos Serviços de Saúde , Nefrologia/métodos , Diálise Renal , Insuficiência Renal Crônica/terapia , Injúria Renal Aguda/diagnóstico , Injúria Renal Aguda/mortalidade , Injúria Renal Aguda/fisiopatologia , Síndrome de Esmagamento/diagnóstico , Síndrome de Esmagamento/mortalidade , Síndrome de Esmagamento/fisiopatologia , Prestação Integrada de Cuidados de Saúde , Planejamento em Desastres/organização & administração , Emergências , Acessibilidade aos Serviços de Saúde/organização & administração , Humanos , Incidentes com Feridos em Massa , Nefrologia/organização & administração , Insuficiência Renal Crônica/diagnóstico , Insuficiência Renal Crônica/mortalidade , Insuficiência Renal Crônica/fisiopatologia , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento
8.
J Ren Nutr ; 22(2): 258-267, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22056149

RESUMO

OBJECTIVE: The survival of patients returning to hemodialysis (HD) following kidney transplant failure is unfavorable. However, the factors responsible for this poor outcome are largely unknown; chronic inflammation due to failed allograft and malnutrition may contribute to morbidity and mortality. We aim to compare the markers of appetite and malnutrition, and their relation with inflammation in HD patients with and without previous kidney transplantation. METHODS: Fifty-six patients with failed renal allografts at least 3 months on dialysis (31 men, 25 women; mean age, 46 ± 9 years) and 77 HD patients who never underwent a transplant (43 men, 34 women; mean age, 50 ± 15 years) were included in the study. The appetite and diet assessment tool (ADAT) was used to determine the self reported appetite of patients. Serum concentrations of ghrelin, leptin, insulin like growth factor 1 (IGF-1), interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and high-sensitivity C-reactive protein (hs-CRP) were measured. Associations among these variables were analyzed. RESULTS: There were no significant differences considering age, gender or duration of renal replacement therapy between the 2 groups. The scores from Appetite and Diet Assessment Tool were significantly higher in the failed-transplant group. Serum ghrelin levels were significantly higher and serum albumin levels were significantly lower in the failed-transplant group. Serum leptin levels were similar between 2 groups. In addition, hs-CRP, IL-6, and TNF-α levels, which were used as inflammatory parameters, were significantly higher in the failed-transplant group. CONCLUSIONS: Elevated serum ghrelin levels and inflammation may cause diminished appetite and malnutrition in patients with failed renal allografts, and higher levels of this hormone seem to be associated with inflammation caused by retained failed allografts.


Assuntos
Apetite , Inflamação/sangue , Falência Renal Crônica/sangue , Transplante de Rim , Desnutrição/sangue , Diálise Renal , Adulto , Biomarcadores/sangue , Proteína C-Reativa/metabolismo , Feminino , Grelina/sangue , Humanos , Inflamação/complicações , Inflamação/fisiopatologia , Fator de Crescimento Insulin-Like I/metabolismo , Interleucina-6/sangue , Falência Renal Crônica/complicações , Leptina/sangue , Masculino , Desnutrição/complicações , Pessoa de Meia-Idade , Estado Nutricional , Transplante Homólogo/métodos , Falha de Tratamento , Fator de Necrose Tumoral alfa/sangue
9.
Nephrol Dial Transplant ; 26(2): 515-24, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20647191

RESUMO

BACKGROUND: The term acute kidney injury (AKI) and its classification in strata defined as Risk, Injury, Failure, Loss and End-stage renal failure (RIFLE) need to be validated in different patient groups. RIFLE may be useful to foresee medical and logistic problems in crush-related AKI in disaster victims. METHODS: Taken from the Marmara earthquake crush database, the subjects included 416 patients who were categorized according to the modified RIFLE criteria and 18 victims with crush injury but with normal serum creatinine who served as controls. Associations between each RIFLE category and various parameters were investigated. RESULTS: There were 27, 79 and 310 patients in the risk, injury and failure groups, respectively. Urine volume and serum albumin were lower; blood pressure, blood urea nitrogen, serum uric acid, potassium and phosphorus were higher; oliguric and polyuric periods were longer; medical complications were more frequent; and number of transfusions, dialysis sessions and days of dialysis support were higher in more severe AKI categories. Glomerular filtration rate at discharge was progressively lower in proportion to the severity of RIFLE classification. However, survival outcome did not differ among controls and patients who suffered from AKI nor in between RIFLE categories. CONCLUSIONS: In disaster crush victims, RIFLE classification can be useful to foresee the medical complications, need for therapeutic interventions and logistic support and also renal function at discharge though, perhaps, not survival.


Assuntos
Injúria Renal Aguda/diagnóstico , Síndrome de Esmagamento/complicações , Desastres , Injúria Renal Aguda/etiologia , Adulto , Idoso , Humanos , Falência Renal Crônica/etiologia , Pessoa de Meia-Idade , Prognóstico , Insuficiência Renal/etiologia , Estudos Retrospectivos , Fatores de Risco , Índice de Gravidade de Doença , Adulto Jovem
10.
Artif Organs ; 34(8): E230-7, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20618227

RESUMO

Maintenance immunosuppression with calcineurin inhibitors (CNI) following renal transplantation is associated with nephrotoxicity and accelerated graft loss. Sirolimus (SRL) is a nonnephrotoxic immunosuppressive agent. We retrospectively analyzed our experience with kidney transplant recipients who were converted from CNI to SRL. A total of 58 renal transplant recipients were converted from CNI to SRL. SRL was started at a dose of 0.075 mg/kg and, at the same time, CNI dose was reduced by 50% daily for 3 days. SRL trough levels were targeted between 8 and 12 ng/mL. When target trough levels were achieved, CNI was withdrawn. The main indications for switching were posttransplant malignancies (n = 32) and chronic allograft nephropathy (CAN) (n = 10). The mean time from transplantation to conversion was 84 +/- 71 months. Mean serum creatinine level was 1.63 +/- 0.52 mg/dL before conversion. Serum creatinine levels at the 1, 3, 6 months, and 1, 2, 3 years after conversion were 1.64 +/- 0.58 mg/dL (P = 0.67), 1.52 +/- 0.53 mg/dL (P = 0.414), 1.62 +/- 0.62 mg/dL (P = 0.734), and 1.48 +/- 0.58 mg/dL (P = 0.065), 1.58 +/- 0.53 mg/dL (P = 0.854), 1.88 +/- 0.77 mg/dL (P = 0.083), respectively. Daily proteinuria levels increased from 0.04 +/- 0.11 g/day at baseline to 0.55 +/- 1.33 g/day (P = 0.037) after conversion, in the responders group. In the nonresponders group, baseline proteinuria was 0.13 +/- 0.25 g/day, and increased to 1.44 +/- 2.44 g/day after conversion (P = 0.008). SRL was discontinued in 16 patients (31%) because of the occurrence of severe side effects. The proportion of patients remaining on SRL therapy over time was 43.1% at 1 year, 15.5% at 2 years after conversion, and 10.3% at 3 years after conversion. SRL conversion may be very useful in patients suffering from neoplasia; however, frequent side effects related with this intervention should be considered, and routine conversion from CNI to SRL to reduce nephrotoxicity should be discouraged.


Assuntos
Inibidores de Calcineurina , Rejeição de Enxerto/prevenção & controle , Imunossupressores/uso terapêutico , Transplante de Rim/efeitos adversos , Sirolimo/uso terapêutico , Adulto , Idoso , Feminino , Humanos , Imunossupressores/farmacologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem
11.
Ren Fail ; 32(3): 380-3, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20370456

RESUMO

Patients with pre-transplantation high levels of panel reactive antibody (PRA) have an increased risk of graft failure, and renal transplantation in sensitized patients remains a highly significant challenge worldwide. The influence of anti-human leukocyte antigen (HLA) antibodies on the development of rejection episodes depends on patient-specific clinical factors and differs from patient to patient. The HLA typing of the recipient might influence the development of anti-HLA antibodies. Some HLA antigens appear to be more immunogenic than others. The aim of this study is to demonstrate the distribution of HLA phenotypes in PRA-positive and PRA-negative end-stage renal disease (ESRD) patients on the basis of having sensitizing events or not. Our study included 642 (mean age: 41.54; female/male: 310/332) ESRD patients preparing for the first transplantation and who are on the cadaveric kidney transplantation waiting list of Istanbul Medical Faculty in 2008-2009. Class I HLA-A,B typing was performed by complement-dependent cytotoxicity (CDC) method, whereas class II HLA-DRB1 typing was performed by low-resolution polymerase chain reaction (PCR)-sequence-specific primer (SSP). All serum samples were screened for the presence of IgG type of anti-HLA class I- and II-specific antibodies by enzyme-linked-immunosorbent assay (ELISA). PRA-negative group consisted of 558 (86.9%) and PRA-positive group included 84 (13.1%) patients. We have found statistically significant frequency of HLA-A3 (p=0.018), HLA-A66 (p=0.04), and HLA-B18 (p=0.006) antigens in PRA-positive patients and DRB1*07 (p=0.02) having the highest frequency in patients with sensitizing event history but no anti-HLA development suggesting that DRB1*07 might be associated with low risk of anti-HLA antibody formation.


Assuntos
Antígenos HLA/imunologia , Histocompatibilidade , Isoanticorpos/sangue , Falência Renal Crônica/imunologia , Transplante de Rim/imunologia , Fenótipo , Adulto , Feminino , Humanos , Falência Renal Crônica/cirurgia , Masculino
12.
Kidney Int ; 76(7): 687-9, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19752861

RESUMO

Besides victims with acute kidney injury, disasters may also affect the destiny of chronic dialysis patients. This Commentary discusses the article by Kutner et al. describing the outcome of chronic dialysis patients who were victims of Hurricane Katrina. The importance of advance disaster plans, including instructions to chronic dialysis patients, is emphasized. In addition, it is expected that specific recommendations, which are currently being prepared, will offer ad hoc advice to rescuers.


Assuntos
Tempestades Ciclônicas , Planejamento em Desastres , Diálise Renal , Humanos , Falência Renal Crônica
14.
Exp Clin Endocrinol Diabetes ; 125(6): 408-413, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28073131

RESUMO

Introduction Genetic mutations such as C599T polymorphism in glutathione peroxidase [GPX1] gene and polymorphisms in potassium channel (KCNJ11) genes have recently been proposed in the etiopathogenesis of new onset diabetes mellitus after renal transplantation (NODAT). We aimed to examine the association of GPX1 and KCNJ11 polymorphisms in NODAT. Materials and Methods This is a monocenter case-control study with a total of 118 renal transplant recipients who were divided into 2 groups; NODAT and normal glucose tolerance. Relation of GPX1 and KCNJ11 polymorphisms were investigated between these groups. PCR-RFLP method was used for genotyping of polymorphisms in the GPX1 (rs1050450) and KCNJ11 (rs1805127) genes. Two alleles were visualized for each gene (C/T for GPX1 and A/G for KCNJ11). Results NODAT was correlated with age at transplantation (p<0.001, r=0.380), post-transplant systolic blood pressure (BP) (p=0.02, r=0.211), post-transplant non-HDL cholesterol levels (p=0.01, r=0.803), degree of weight change at the end of the first year (p=0.01, r=0.471), presence of pre-transplant hypertension (HT) (p=0.02, r=0.201), family history of diabetes (p=0.01, r=0.29) and dyslipidemia (p=0.012, r=0.362). GPX1 polymorphism of TT (mutant) allele was significantly more frequent in patients with NODAT (p<0.001, r=0.396) independent from other diabetogenic risk factors. KCNJ11 polymorphisms were similar in both groups and did not show any significant association with NODAT (p=0.10). Conclusions In addition to several diabetogenic risk factors, C599T polymorphisms in GPX1 gene might also contribute to the development of NODAT. Further studies on larger patient series are necessary in order to reach definitive suggestions.


Assuntos
Diabetes Mellitus/genética , Glutationa Peroxidase/genética , Transplante de Rim , Polimorfismo Genético , Canais de Potássio Corretores do Fluxo de Internalização/genética , Adulto , Diabetes Mellitus/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Glutationa Peroxidase GPX1
15.
Int J Artif Organs ; 39(11): 547-552, 2017 Jan 13.
Artigo em Inglês | MEDLINE | ID: mdl-28058698

RESUMO

INTRODUCTION: Serum soluble CD30 (sCD30), a 120-kD glycoprotein that belongs to the tumor necrosis factor receptor family, has been suggested as a marker of rejection in kidney transplant patients. The aim of this study was to evaluate the relationship between sCD30 levels and anti-HLA antibodies, and to compare sCD30 levels in patients undergoing hemodialysis (HD) with and without failed renal allografts and transplant recipients with functioning grafts. METHODS: 100 patients undergoing HD with failed grafts (group 1), 100 patients undergoing HD who had never undergone transplantation (group 2), and 100 kidney transplant recipients (group 3) were included in this study. Associations of serum sCD30 levels and anti-HLA antibody status were analyzed in these groups. RESULTS: The sCD30 levels of group 1 and group 2 (154 ± 71 U/mL and 103 ± 55 U/mL, respectively) were significantly higher than those of the transplant recipients (group 3) (39 ± 21 U/mL) (p<0.001 and p<0.001). The serum sCD30 levels in group 1 (154 ± 71 U/mL) were also significantly higher than group 2 (103 ± 55 U/mL) (p<0.001). Anti-HLA antibodies were detected in 81 (81%) and 5 (5%) of patients in groups 1 and 2, respectively (p<0.001). When multiple regression analysis was performed to predict sCD30 levels, the independent variables in group 1 were the presence of class I anti-HLA antibodies (ß = 0.295; p = 0.003) and age (ß = -0.272; p = 0.005), and serum creatinine (ß = 0.218; p = 0.027) and presence of class II anti-HLA antibodies (standardized ß = 0.194; p = 0.046) in group 3. CONCLUSIONS: Higher sCD30 levels and anti-HLA antibodies in patients undergoing HD with failed renal allografts may be related to higher inflammatory status in these patients.


Assuntos
Rejeição de Enxerto/sangue , Antígenos HLA/imunologia , Isoanticorpos/sangue , Antígeno Ki-1/sangue , Transplante de Rim , Adulto , Biomarcadores/sangue , Feminino , Seguimentos , Rejeição de Enxerto/imunologia , Humanos , Masculino , Diálise Renal
17.
Kidney Int Suppl (2011) ; 6(2): 35-41, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30675418

RESUMO

Provision of health care for refugees poses many political, economical, and ethical questions. Data on the prevalence and management of refugees with end-stage kidney disease (ESKD) are scant. Nevertheless, the impact of refugees in need for renal replacement can be as high for the patient as for the receiving centers. The International Society of Nephrology and the European Renal Association/European Dialysis and Transplant Association surveyed their membership through Survey Monkey questionnaires to obtain data on epidemiology and management practices of refugees with ESKD. Refugees represent 1.5% of the dialysis population, but their geographic distribution is very skewed: ±60% of centers treat 0, 15% treat 1, and a limited number of centers treat >20 refugees. Knowledge on financial and legal management of these patients is low. There is a lack of a structured approach by the government. Most respondents stated we have a moral duty to treat refugee patients with ESKD. Cultural rather than linguistic differences were perceived as a barrier for optimal care. Provision of dialysis for refugees with ESKD seems sustainable and logistically feasible, as they are only 1.5% of the regular dialysis population, but the skewed distribution potentially threatens optimal care. There is a need for education on financial and legal aspects of management of refugees with ESKD. Clear guidance from governing bodies should avoid unacceptable ethical dilemmas for the individual physician. Such strategies should balance access to care for all with equity and solidarity without jeopardizing the health care of the local population.

18.
J Nephrol ; 18(6): 781-2, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-16358240

RESUMO

INTRODUCTION: Post-transplant malignancies are among the most important complications in organ transplantation. Hemangioblastoma (HB) is especially prevalent in the cerebellum. CASE REPORT: A 20-year-old male who first started dialysis therapy, and then underwent kidney transplantation from a living-relative donor. Five years after transplantation, the patient suffered from vertigo and imbalance when walking. On cranial magnetic resonance imaging (MRI), a mass lesion in the right cerebellar hemisphere was observed, 3 x 3 x 3 cm in size, which was pushing against the fourth ventricle, and the right cerebellar peduncle. The patient had significant hydrocephaly. The mass lesion was removed by craniectomy. The pathological diagnosis was cerebellar hemangioblastoma. The symptoms and clinical findings improved. The patient was diagnosed with sporadic hemangioblastoma. Rapamycin therapy was started instead of cyclosporine, and the patient is being followed up without further problems. DISCUSSION: HB causes 2% of all intracranial tumors in the general population. It is generally sporadic in nature and approximately 20% can be associated with von Hippel-Lindau (VHL) syndrome. As in this case, MRI is preferred for the diagnosis. There was no pathology related to VHL disease in this patient's physical examination, family history, routine biochemical tests and abdominal MRI. The treatment is surgical excision of the tumor, as in this case. CONCLUSION: When cerebellar symptoms occur or a cerebellar mass lesion is detected in an organ recipient, HB should be considered in the differential diagnosis. The examination of patients with HB for a possible association with VHL disease is also required.


Assuntos
Neoplasias Cerebelares/etiologia , Hemangioblastoma/etiologia , Transplante de Rim/efeitos adversos , Adulto , Neoplasias Cerebelares/diagnóstico , Neoplasias Cerebelares/cirurgia , Craniotomia , Seguimentos , Hemangioblastoma/diagnóstico , Hemangioblastoma/cirurgia , Humanos , Falência Renal Crônica/cirurgia , Imageamento por Ressonância Magnética , Masculino
19.
Am J Kidney Dis ; 41(3): 616-23, 2003 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-12612985

RESUMO

BACKGROUND: Endothelial dysfunction (ED), which is a risk factor for atherosclerosis, has been reported recently in chronic hemodialysis (CHD) patients. In this study, we aim to investigate the association of ED and presence of left ventricular hypertrophy (LVH) in CHD patients. METHODS: One hundred four CHD patients (47 men, 57 women; mean age, 45 +/- 12 years) and 49 age- and sex-matched controls were included. Mean time on dialysis therapy was 62 months. Echocardiographic examination and flow-mediated endothelium-dependent (EDD) and endothelium-independent dilatation (EID) of the brachial artery, measured by high-resolution ultrasonography, a noninvasive method for assessing endothelial function, were performed on a nondialysis day. RESULTS: LVH was detected in 72 CHD patients (69%). Patients with LVH had a lower EDD (9.3% +/- 6.1% versus 12.1% +/- 8.3%; P = 0.06), but the difference was not significant. Mean EID was significantly lower in CHD patients with LVH (13.6% +/- 7.6% versus 18.6% +/- 9.8%; P = 0.008). Left ventricular mass index (LVMI) correlated with both EDD (r = -0.22; P = 0.03) and EID (r = -0.32; P = 0.002). Patients with LVH had a greater rate of hypertension (35 of 72 versus 7 of 32 patients; P = 0.02) and lower hemoglobin levels (11.0 +/- 1.8 versus 11.8 +/- 1.6 g/dL [110 +/- 18 versus 118 +/- 16 g/L]; P = 0.05). CHD patients had a lower EDD (10.2% +/- 6.9% versus 20.9% +/- 7.6%; P < 0.001) and EID (15.0% +/- 8.5% versus 27.8% +/- 8.5%; P < 0.001) compared with controls. In linear regression analysis for predicting LVMI, presence of hypertension, hemoglobin level, and EID, but not EDD, were found to be independent variables. CONCLUSION: EID, which may reflect decreased elasticity of arteries, contributes to the development of LVH in CHD patients, in addition to hypertension and anemia.


Assuntos
Endotélio Vascular/fisiopatologia , Hipertrofia Ventricular Esquerda/etiologia , Diálise Renal/efeitos adversos , Adolescente , Adulto , Idoso , Artéria Braquial/diagnóstico por imagem , Artéria Braquial/fisiopatologia , Estudos de Casos e Controles , Estudos Transversais , Ecocardiografia/métodos , Endotélio Vascular/diagnóstico por imagem , Feminino , Humanos , Hipertrofia Ventricular Esquerda/fisiopatologia , Falência Renal Crônica/fisiopatologia , Falência Renal Crônica/terapia , Masculino , Pessoa de Meia-Idade , Fluxo Sanguíneo Regional/fisiologia , Vasodilatação/fisiologia
20.
J Nephrol ; 17(3): 399-404, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15365960

RESUMO

BACKGROUND: Detailed analyses on crush syndrome resulting from earthquakes is scarce. This study aimed to analyze the effect of gender on clinical course of the renal victims of the catastrophic Marmara earthquake that struck Northwestern Turkey in 1999. METHODS: Questionnaires were prepared within the first week of disaster and sent to 35 reference hospitals that treated the victims. Relationship between gender and various epidemiological, clinical, laboratory parameters, treatment modalities and outcome was then investigated. RESULTS: Of the 639 victims with renal dysfunction, 348 (54%) were males and 291 (46%) females. Mean age was 33 +/- 14 and 31 +/- 15 years in the male and female victims, respectively. At admission, males were characterized by a higher hematocrit and higher serum levels of creatinine, BUN, potassium and phosphorus, while other clinical and laboratory parameters as well as the number of fasciotomized and amputated extremities did not differ between the two genders. Males suffered from longer periods of oliguria, higher rates of sepsis and hypertension. 77.3% of the male patients needed dialysis support as compared to 71.5% in the females. The number of hemodialysis sessions and days for dialysis support were higher in the males. Last serum creatinine before discharge from the nephrology clinics was higher in male victims, while mortality rates were similar in both genders. CONCLUSION: Although males are characterized by more severe laboratory abnormalities of rhabdomyolysis, more frequently suffer from sepsis and need more intensive dialysis support, gender is not a prognostic indicator of final outcome in the renal victims of disasters.


Assuntos
Síndrome de Esmagamento/fisiopatologia , Desastres , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Síndrome de Esmagamento/sangue , Síndrome de Esmagamento/terapia , Feminino , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Potássio/sangue , Diálise Renal , Fatores Sexuais , Turquia
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