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1.
Transpl Int ; 37: 12168, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38323071

RESUMO

De novo thrombotic microangiopathy (TMA) is a rare and challenging condition in kidney transplant recipients, with limited research on its incidence and impact on graft survival. This study conducted a systematic review and meta-analysis of 28 cohorts/single-arm studies and 46 case series/reports from database inception to June 2022. In meta-analysis, among 14,410 kidney allograft recipients, de novo TMA occurred in 3.20% [95% confidence interval (CI): 1.93-4.77], with systemic and renal-limited TMA rates of 1.38% (95% CI: 06.5-2.39) and 2.80% (95% CI: 1.27-4.91), respectively. The overall graft loss rate of de novo TMA was 33.79% (95% CI: 26.14-41.88) in meta-analysis. This study provides valuable insights into the incidence and graft outcomes of de novo TMA in kidney transplant recipients.


Assuntos
Transplante de Rim , Microangiopatias Trombóticas , Humanos , Transplante de Rim/efeitos adversos , Sobrevivência de Enxerto , Incidência , Rim
2.
Transpl Int ; 37: 12192, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38328616

RESUMO

Pneumocystis pneumonia (PcP) remains life-threatening in kidney transplant recipients (KTR). Our study investigated risk factors one-year before PcP. We conducted a monocentric, case-control study including all KTR at the Dijon University Hospital (France) with a diagnosis of PcP between 2005 and 2022 (cases), and matched control KTR with no history of PcP (3 controls/case). Among all 1,135 KTR, 57 cases (5%) and 169 matched-controls were included. PcP was associated with 18% mortality. Compared to controls, cases were older, with a higher immunological risk, and CMV infection was more frequent in the year preceding the occurrence of PcP (23% vs. 4%; p < 0.001). As early as 1 year before PcP, lymphocyte counts were lower and serum creatinine levels were higher in cases, but immunosuppressive regimens were not significantly different. Multivariable analysis identified lymphocyte count, serum creatinine level, being treated by immunosuppressive therapy other than anti-rejection drugs, and CMV infection in the year preceding the time PcP as independently associated with the occurrence of PcP. PcP was associated with an increased risk of subsequent chronic rejection (27% vs. 3%; p = 0.001) and return to dialysis (20% vs. 3%; p = 0.002). The occurrence of CMV infection and a low lymphocyte count could redefine the indications for continuation or reinitiation of anti-Pneumocystis prophylaxis.


Assuntos
Infecções por Citomegalovirus , Transplante de Rim , Linfopenia , Pneumocystis carinii , Pneumonia por Pneumocystis , Trombocitopenia , Humanos , Pneumonia por Pneumocystis/diagnóstico , Pneumonia por Pneumocystis/complicações , Pneumonia por Pneumocystis/tratamento farmacológico , Estudos de Casos e Controles , Transplante de Rim/efeitos adversos , Creatinina , Infecções por Citomegalovirus/complicações , Infecções por Citomegalovirus/diagnóstico , Infecções por Citomegalovirus/epidemiologia , Fatores de Risco , Linfopenia/complicações , Trombocitopenia/complicações , Transplantados , Estudos Retrospectivos
3.
Dan Med J ; 71(2)2024 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-38314732

RESUMO

INTRODUCTION: Renal transplant patients are prone to developing urinary tract infections (UTIs). However, the potential effect of a UTI on renal graft loss remains unclear. METHODS: We systematically surveyed the literature for a potential association between UTI and graft loss. Articles were identified in online databases using a specific search string, followed by post selection for meta-analysis following four inclusion criteria: 1) a clear definition of UTI and recurrent UTI, 2) n > 200, 3) patient age > 16 years and 4) inclusion of data on graft loss. Data on UTI and graft loss were extracted from the included studies for calculation of a combined weighted odds ratio (OR) using the Mantel-Haenszel method. This review was conducted according to the PRISMA 2020 statement. RESULTS: Unfortunately, only eight of 108 papers met the inclusion criteria. These studies reported between 276 and 2,368 patients, primarily male, aged around 50 years. The two-year incidence of overall UTI varied from 16.5% at a 27.5-month follow-up to 30.1% at a 24-month follow-up from transplantation. Seven papers were included in the OR analysis; two found an association between UTI and graft loss and five did not. However, in the meta-analysis, the weighted OR for all seven studies was 1.340 (95% confidence interval: 1.050-1.720). CONCLUSIONS: Filtering the literature for a strict definition of UTI allowed us to establish an association between UTI and graft loss in renal transplant patients. However, further investigation and stronger studies using the Goldman criteria are needed to allow stratification for UTI severity and effect on graft loss.


Assuntos
Transplante de Rim , Infecções Urinárias , Humanos , Masculino , Idoso , Adolescente , Transplante de Rim/efeitos adversos , Sobrevivência de Enxerto , Infecções Urinárias/epidemiologia , Infecções Urinárias/etiologia , Rim , Incidência
6.
Int J Mol Sci ; 25(3)2024 Jan 24.
Artigo em Inglês | MEDLINE | ID: mdl-38338714

RESUMO

Between 15-20% of patients with end stage renal disease (ESRD) do not know the cause of the primary kidney disease and can develop complications after kidney transplantation. We performed a genetic screening in 300 patients with kidney transplantation, or undiagnosed primary renal disease, in order to identify the primary disease cause and discriminate between overlapping phenotypes. We used a custom-made panel for next-generation sequencing (Agilent technology, Santa Clara, CA, USA), including genes associated with Fabry disease, podocytopaties, complement-mediated nephropathies and Alport syndrome-related diseases. We detected candidate diagnostic variants in genes associated with nephrotic syndrome and Focal Segmental Glomerulosclerosis (FSGS) in 29 out of 300 patients, solving about 10% of the probands. We also identified the same genetic cause of the disease (PAX2: c.1266dupC) in three family members with different clinical diagnoses. Interestingly we also found one female patient carrying a novel missense variant, c.1259C>A (p.Thr420Lys), in the GLA gene not previously associated with Fabry disease, which is in silico defined as a likely pathogenic and destabilizing, and associated with a mild alteration in GLA enzymatic activity. The identification of the specific genetic background may provide an opportunity to evaluate the risk of recurrence of the primary disease, especially among patient candidates living with a donor kidney transplant.


Assuntos
Doença de Fabry , Glomerulosclerose Segmentar e Focal , Nefropatias , Transplante de Rim , Humanos , Feminino , Transplante de Rim/efeitos adversos , Doença de Fabry/diagnóstico , Doença de Fabry/genética , Doença de Fabry/patologia , Testes Genéticos , Nefropatias/patologia , Rim/patologia , Glomerulosclerose Segmentar e Focal/diagnóstico , Glomerulosclerose Segmentar e Focal/genética , Glomerulosclerose Segmentar e Focal/patologia
7.
Ren Fail ; 46(1): 2313863, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38345031

RESUMO

BACKGROUND: The effect of tacrolimus (TAC) on oxidative stress after kidney transplantation (KT) is unclear. This study aimed to evaluate the influence of TAC trough levels of oxidative stress status in Tunisian KT patients during the post-transplantation period (PTP). METHODS: A prospective study including 90 KT patients was performed. TAC whole-blood concentrations were measured by the microparticle enzyme immunoassay method and adjusted according to the target range. Plasma levels of oxidants (malondialdehyde (MDA) and advanced oxidation protein products (AOPP)) and antioxidants (ascorbic acid, glutathione (GSH), glutathione peroxidase (GPx), and superoxide dismutase (SOD)) were measured using spectrophotometry. The subjects were subdivided according to PTP into three groups: patients with early, intermediate, and late PT. According to the TAC level, they were subdivided into LL-TAC, NL-TAC, and HL-TAC groups. RESULTS: A decrease in MDA levels, SOD activity, and an increase in GSH levels and GPx activity were observed in patients with late PT compared to those with early and intermediate PT (p < 0.05). Patients with LL-TAC had lower MDA levels and higher GSH levels and GPx activity compared with the NL-TAC and HL-TAC groups (p < 0.05). CONCLUSION: Our results have shown that in KT patients, despite the recovery of kidney function, the TAC reduced but did not normalize oxidative stress levels in long-term therapy, and the TAC effect significantly depends on the concentration used.


Assuntos
Transplante de Rim , Tacrolimo , Humanos , Tacrolimo/uso terapêutico , Transplante de Rim/efeitos adversos , Estudos Prospectivos , Estresse Oxidativo , Antioxidantes/farmacologia , Glutationa/metabolismo , Superóxido Dismutase/metabolismo , Rim/metabolismo , Glutationa Peroxidase/metabolismo , Glutationa Peroxidase/farmacologia
8.
Ann Transplant ; 29: e942656, 2024 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-38374615

RESUMO

BACKGROUND The purpose of the present study was to analyze the rate of lymphoceles in kidney transplant operations meticulously performed by the same senior surgeon. MATERIAL AND METHODS The present study included 315 patients who were operated on in our organ transplantation center and followed up in the polyclinic after July 2013. The patients were retrospectively divided into 2 groups: patients with and without lymphocele. Symptomatic lymphocele (SL) has been defined as symptomatic fluid collection around the graft that necessitates an intervention for the graft or patient. RESULTS Lymphocele was observed in 82 (26%) patients. An intervention was needed in 16 (5.1%) of these cases. Demographic data such as age and sex of both groups were similar. Lymphocele cases were mostly asymptomatic, with a size <6 cm (75.6%). However, intervention was needed in 16 (75%) of the patients with a size ≥6 cm that were symptomatic. The length of time on dialysis in the pretansplant period was shorter in the group that developed lymphocele, and a lower rate of graft loss was observed in these patients. No statistically significant difference was found between the 2 groups in terms of rejection rates, serum albumin/globulin levels, and development of de novo DSA. CONCLUSIONS The risk factors reported in the literature related with lymphocele formation were not found to be statistically significant in our study. Complications, except lymphocele, were observed less frequently, but lymphocele formation was encountered in our patients despite meticulous surgery.


Assuntos
Transplante de Rim , Linfocele , Cirurgiões , Humanos , Transplante de Rim/efeitos adversos , Linfocele/etiologia , Linfocele/prevenção & controle , Linfocele/cirurgia , Estudos Retrospectivos , Rim , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/prevenção & controle , Complicações Pós-Operatórias/cirurgia
9.
Transpl Int ; 37: 11916, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38384325

RESUMO

The impact of pre-transplant parathyroid hormone (PTH) levels on early or long-term kidney function after kidney transplantation is subject of debate. We assessed whether severe hyperparathyroidism is associated with delayed graft function (DGF), death-censored graft failure (DCGF), or all-cause mortality. In this single-center cohort study, we studied the relationship between PTH and other parameters related to bone and mineral metabolism, including serum alkaline phosphatase (ALP) at time of transplantation with the subsequent risk of DGF, DCGF and all-cause mortality using multivariable logistic and Cox regression analyses. In 1,576 kidney transplant recipients (51.6 ± 14.0 years, 57.3% male), severe hyperparathyroidism characterized by pre-transplant PTH ≥771 pg/mL (>9 times the upper limit) was present in 121 patients. During 5.2 [0.2-30.0] years follow-up, 278 (15.7%) patients developed DGF, 150 (9.9%) DCGF and 432 (28.6%) died. A higher pre-transplant PTH was not associated with DGF (HR 1.06 [0.90-1.25]), DCGF (HR 0.98 [0.87-1.13]), or all-cause mortality (HR 1.02 [0.93-1.11]). Results were consistent in sensitivity analyses. The same applied to other parameters related to bone and mineral metabolism, including ALP. Severe pre-transplant hyperparathyroidism was not associated with an increased risk of DGF, DCGF or all-cause mortality, not supporting the need of correction before kidney transplantation to improve graft or patient survival.


Assuntos
Hiperparatireoidismo , Transplante de Rim , Humanos , Masculino , Feminino , Transplante de Rim/efeitos adversos , Estudos de Coortes , Hiperparatireoidismo/complicações , Hormônio Paratireóideo , Minerais , Sobrevivência de Enxerto , Fatores de Risco , Função Retardada do Enxerto/etiologia , Rejeição de Enxerto , Estudos Retrospectivos
10.
Sci Rep ; 14(1): 4002, 2024 02 18.
Artigo em Inglês | MEDLINE | ID: mdl-38369626

RESUMO

A for-cause biopsy is performed to diagnose the cause of allograft dysfunction in kidney transplantation. We occasionally encounter ambiguous biopsy results in symptomatic kidney transplant recipients. Yet, the allograft survival outcome in symptomatic recipients with nonspecific allograft biopsy findings remains unclear. The purpose of this study was to analyze the impact of nonspecific for-cause biopsy findings in symptomatic kidney transplant recipients. We retrospectively collected records from 773 kidney transplant recipients between January 2008 and October 2021. The characteristics of transplant recipients with nonspecific findings in the first for-cause biopsy were analyzed. Nonspecific allograft biopsy findings were defined as other biopsy findings excluding rejection, borderline rejection, calcineurin inhibitor toxicity, infection, glomerulonephritis, and diabetic nephropathy. The graft outcome was compared between recipients who had never undergone a for-cause biopsy and those who had a first for-cause biopsy with nonspecific findings. The graft survival in recipients with nonspecific for-cause biopsy findings was comparable to that in recipients who did not require the for-cause biopsy before and after propensity score matching. Even in symptomatic kidney transplant recipients, nonspecific allograft biopsy findings might not be a poor prognostic factor for allograft survival compared to recipients who did not require the for-cause biopsy.


Assuntos
Transplante de Rim , Humanos , Transplante de Rim/efeitos adversos , Estudos Retrospectivos , Transplantados , Rejeição de Enxerto/patologia , Sobrevivência de Enxerto , Aloenxertos , Biópsia , Rim/patologia
11.
Transpl Int ; 37: 11960, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38371907

RESUMO

Recent developments in intensive desensitization protocols have enabled kidney transplantation in human leukocyte antigen (HLA)-sensitized recipients. However, cases of active antibody-mediated rejection (AABMR), when they occur, are difficult to manage, graft failure being the worst-case scenario. We aimed to assess the impact of our desensitization and AABMR treatment regimen and identify risk factors for disease progression. Among 849 patients who underwent living-donor kidney transplantation between 2014 and 2021 at our institution, 59 were diagnosed with AABMR within 1 year after transplantation. All patients received combination therapy consisting of steroid pulse therapy, intravenous immunoglobulin, rituximab, and plasmapheresis. Multivariable analysis revealed unrelated donors and preformed donor-specific antibodies as independent risk factors for AABMR. Five-year death-censored graft survival rate was not significantly different between patients with and without AABMR although 27 of 59 patients with AABMR developed chronic AABMR (CABMR) during the study period. Multivariate Cox proportional hazard regression analysis revealed that a donor age greater than 59 years and microvascular inflammation (MVI) score (g + ptc) ≥4 at AABMR diagnosis were independent risk factors for CABMR. Our combination therapy ameliorated AABMR; however, further treatment options should be considered to prevent CABMR, especially in patients with old donors and severe MVI.


Assuntos
Anticorpos , Transplante de Rim , Humanos , Pessoa de Meia-Idade , Transplante de Rim/efeitos adversos , Transplante de Rim/métodos , Rim , Fatores de Risco , Inflamação/etiologia , Rejeição de Enxerto , Sobrevivência de Enxerto , Antígenos HLA
12.
Clin Transplant ; 38(2): e15264, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38375934

RESUMO

BACKGROUND: The association between cannabis use and access to waitlisting, transplantation, and post-transplant outcomes remains uncertain. METHODS: Patients referred for kidney transplant (KT) to the University Health Network from January 1, 2003, to June 30, 2020, and followed until December 31, 2020, were included. Predictors of reported cannabis use were examined using a logistic regression model. The association between cannabis use and time to clearance for KT, undergoing KT, and post-transplant outcomes was evaluated using Cox proportional hazards models. RESULTS: Among 3734 patients, the prevalence of reported cannabis use was 11.8%. Cannabis use was associated with a lower likelihood of KT clearance (adjusted hazard ratio [aHR] .82 [95% confidence interval (CI): .72, .94]). Once cleared for KT, cannabis use did not predict the subsequent receipt of KT (aHR .92, [95% CI: .79, 1.08]). Among 2091 KT recipients, cannabis use was associated with a higher likelihood of biopsy-proven acute rejection (aHR 1.55, [95% CI: 1.06, 2.27]). The relative hazard of death-censored graft failure was similarly elevated (aHR 1.60 [95% CI: .95, 2.72]). Cannabis use did not predict total graft failure (aHR 1.33 [95% CI: .90, 1.96]), death with graft function (aHR 1.06 [95% CI: .59, 1.89]), or hospital readmission in the first-year post-transplant (aHR 1.26 [95% CI: .95, 1.68]). CONCLUSIONS: Cannabis users have less access to transplantation and an increased risk of acute rejection, possibly leading to more graft loss. Further studies are warranted to understand possible mechanisms for the increased risk of allograft immune injury among cannabis users.


Assuntos
Cannabis , Transplante de Rim , Humanos , Transplante de Rim/efeitos adversos , Modelos de Riscos Proporcionais , Modelos Logísticos , Rejeição de Enxerto/epidemiologia , Rejeição de Enxerto/etiologia , Fatores de Risco , Sobrevivência de Enxerto
13.
Clin Transplant ; 38(2): e15259, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38375952

RESUMO

BACKGROUND: Guidelines recommend kidney transplant alone (KTA) in compensated cirrhosis based on a few small studies, but this is not widely performed despite its potential benefit to patients and the organ supply. Our aim was to determine the outcomes of KTA in patients with compensated cirrhosis. STUDY DESIGN: From 1/2012 to 12/2021, outcomes in KTA recipients with compensated cirrhosis were retrospectively compared to patients with chronic liver disease (CLD) but no cirrhosis. Patients with compensated cirrhosis were also compared to a matched cohort (based on age, time on hemodialysis, sex, and ethnicity) of KTA recipients without CLD. The outcomes included patient survival, allograft failure, allograft rejection, serious infection, liver decompensation, and length of stay (LOS). RESULTS: Over 9 years, 1562 KTAs were performed, with 150 (9.6%) patients having CLD mostly due to chronic hepatitis C, and a median follow-up of 3.5 years. 32/150 (21%) had compensated cirrhosis at the time of KTA with a mean MELD-Na of 22 (1.5). Matched controls (n = 189) were identified. We found no differences in patient survival (p = .07), allograft failure (p = .6), allograft rejection (p = .43), rates of serious infection (p = .31), as well as LOS (p = .61) among patients with compensated cirrhosis compared to patients with CLD but no cirrhosis, but with higher rates of liver decompensation (p = .004). Similarly, compared to patients without CLD, patients with cirrhosis had similar rates of patient survival (p = .20), allograft failure (p = .27), allograft rejection (p = .62) and LOS (p = .19) but with higher rates of serious infections (p = .001). CONCLUSIONS: Our study supports the safety and efficacy of KTA in patients with compensated cirrhosis.


Assuntos
Transplante de Rim , Humanos , Transplante de Rim/efeitos adversos , Estudos de Casos e Controles , Estudos Retrospectivos , Cirrose Hepática/complicações , Cirrose Hepática/cirurgia , Transplante Homólogo
14.
JAMA Ophthalmol ; 142(2): e234740, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38358449

RESUMO

This case report discusses the evolution of crystalline retinopathy secondary to systemic hyperoxalosis after kidney transplant for hyperoxaluria was performed.


Assuntos
Hiperoxalúria , Transplante de Rim , Humanos , Transplante de Rim/efeitos adversos , Hiperoxalúria/diagnóstico , Hiperoxalúria/etiologia
15.
Eur J Med Res ; 29(1): 120, 2024 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-38350996

RESUMO

BACKGROUND: Bronchiectasis is a chronic airway disease characterized by permanent and irreversible abnormal dilatation of bronchi. Several studies have reported the development of bronchiectasis after renal transplantation (RT), but no prospective study specifically assessed bronchiectasis in this population. This study aimed to compare features of patients with bronchiectasis associated with RT to those with idiopathic bronchiectasis. METHODS: Nineteen patients with bronchiectasis associated with RT (RT-B group) and 23 patients with idiopathic bronchiectasis (IB group) were prospectively included in this monocentric cross-sectional study. All patients underwent clinical, functional, laboratory, and CT scan assessments. Sputum was collected from 25 patients (n = 11 with RT-B and n = 14 with IB) and airway microbiota was analyzed using an extended microbiological culture. RESULTS: Dyspnea (≥ 2 on mMRC scale), number of exacerbations, pulmonary function tests, total bronchiectasis score, severity and prognosis scores (FACED and E-FACED), and quality of life scores (SGRQ and MOS SF-36) were similar in the RT-B and IB groups. By contrast, chronic cough was less frequent in the RT-B group than in the IB group (68% vs. 96%, p = 0.03). The prevalence and diversity of the airway microbiota in sputum were similar in the two groups. CONCLUSION: Clinical, functional, thoracic CT scan, and microbiological characteristics of bronchiectasis are overall similar in patients with IB and RT-B. These results highlight that in RT patients, chronic respiratory symptoms and/or airway infections should lead to consider the diagnosis of bronchiectasis. Further studies are required to better characterize the pathophysiology of RT-B including airway microbiota, its incidence, and impact on therapeutic management.


Assuntos
Bronquiectasia , Transplante de Rim , Doença Pulmonar Obstrutiva Crônica , Humanos , Estudos Transversais , Transplante de Rim/efeitos adversos , Qualidade de Vida , Bronquiectasia/complicações
16.
Diabetes Metab Res Rev ; 40(2): e3781, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38367259

RESUMO

AIMS: The impact of donor abdominal fat-to-muscle ratio (FMR) on kidney transplant (KT) outcomes was assessed. Given the transient nature of the donor's metabolic environment in transplant recipients, this study investigated the capacity of body composition to induce metabolic memory effects. MATERIALS AND METHODS: KT patients (n = 895) who received allografts from living donors (2003-2013) were included. Donor fat and muscle were quantified using pre-KT abdominal computed tomography scans. Patients were categorised into donor FMR tertiles and followed up for graft outcomes. Additionally, genome-wide DNA methylation analysis was performed on 28 kidney graft samples from KT patients in the low- and high-FMR groups. RESULTS: Mean recipient age was 42.9 ± 11.4 years and 60.9% were males. Donor FMR averaged 1.67 ± 0.79. Over a median of 120.9 ± 42.5 months, graft failure (n = 127) and death-censored graft failure (n = 109) were more frequent in the higher FMR tertiles. Adjusted hazard ratios for the highest versus lowest FMR tertile were 1.71 (95% CI, 1.06-2.75) for overall graft failure and 1.90 (95% CI, 1.13-3.20) for death-censored graft failure. Genome-wide DNA methylation analysis identified 58 differentially methylated regions (p < 0.05, |Δß| > 0.2) and 35 genes showed differential methylation between the high- (FMR >1.91) and low-FMR (FMR <1.27) groups. CONCLUSIONS: Donors with increased fat and reduced muscle composition may negatively impact kidney allograft survival in recipients, possibly through the transmission of epigenetic changes, implying a body-composition-related metabolic memory effect.


Assuntos
Transplante de Rim , Masculino , Humanos , Adulto , Pessoa de Meia-Idade , Feminino , Transplante de Rim/efeitos adversos , Estudos Retrospectivos , Sobrevivência de Enxerto/fisiologia , Doadores Vivos , Músculos
17.
BMC Geriatr ; 24(1): 148, 2024 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-38350846

RESUMO

BACKGROUND: Comprehensive geriatric assessment (CGA) involves a formal broad approach to assess frailty and creating a plan for management. However, the impact of CGA and its components on listing for kidney transplant in older adults has not been investigated. METHODS: We performed a single-center retrospective study of patients with end-stage renal disease who underwent CGA during kidney transplant candidacy evaluation between 2017 and 2021. All patients ≥ 65 years old and those under 65 with any team member concern for frailty were referred for CGA, which included measurements of healthcare utilization, comorbidities, social support, short physical performance battery, Montreal Cognitive Assessment (MoCA), and Physical Frailty Phenotype (FPP), and estimate of surgical risk by the geriatrician. RESULTS: Two hundred and thirty patients underwent baseline CGA evaluation; 58.7% (135) had high CGA ("Excellent" or "Good" rating for transplant candidacy) and 41.3% (95) had low CGA ratings ("Borderline," "Fair," or "Poor"). High CGA rating (OR 8.46; p < 0.05), greater number of CGA visits (OR 4.93; p = 0.05), younger age (OR 0.88; p < 0.05), higher MoCA scores (OR 1.17; p < 0.05), and high physical activity (OR 4.41; p < 0.05) were all associated with listing on transplant waitlist. CONCLUSIONS: The CGA is a useful, comprehensive tool to help select older adults for kidney transplantation. Further study is needed to better understand the predictive value of CGA in predicting post-operative outcomes.


Assuntos
Fragilidade , Falência Renal Crônica , Transplante de Rim , Humanos , Idoso , Transplante de Rim/efeitos adversos , Estudos Retrospectivos , Avaliação Geriátrica , Falência Renal Crônica/diagnóstico , Falência Renal Crônica/epidemiologia , Falência Renal Crônica/cirurgia
18.
Front Immunol ; 15: 1355128, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38361942

RESUMO

Background: Living donor (LD) kidney transplantation in the setting of ABO blood group incompatibility (ABOi) has been previously reported to be associated with increased risk for antibody-mediated rejection (ABMR). It is however unclear if the presence of pre-transplant donor specific antibodies (DSA) works as an additive risk factor in the setting of ABOi and if DSA positive ABOi transplants have a significantly worse long-term outcome as compared with ABO compatible (ABOc) DSA positive transplants. Methods: We investigated the effect of pre-transplant DSA in the ABOi and ABOc setting on the risk of antibody-mediated rejection (ABMR) and graft loss in a cohort of 952 LD kidney transplants. Results: We found a higher incidence of ABMR in ABOi transplants as compared to ABOc transplants but this did not significantly affect graft survival or overall survival which was similar in both groups. The presence of pre-transplant DSA was associated with a significantly increased risk of ABMR and graft loss both in the ABOi and ABOc setting. We could not detect an additional risk of DSA in the ABOi setting and outcomes were comparable between DSA positive ABOi and ABOc recipients. Furthermore, a combination of DSA directed at both Class I and Class II, as well as DSA with a high mean fluorescence intensity (MFI) showed the strongest relation to ABMR development and graft loss. Conclusion: The presence of pre-transplant DSA was associated with a significantly worse long-term outcome in both ABOi and ABOc LD kidney transplants and our results suggests that the risk associated with pre-transplant DSA is perhaps not augmented in the ABOi setting. Our study is the first to investigate the long-term effects of DSA in the ABOi setting and argues that pre-transplant DSA risk could potentially be evaluated similarly regardless of ABO compatibility status.


Assuntos
Transplante de Rim , Humanos , Transplante de Rim/efeitos adversos , Estudos de Coortes , Suíça/epidemiologia , Doadores Vivos , Rejeição de Enxerto , Sistema ABO de Grupos Sanguíneos , Anticorpos
19.
Rozhl Chir ; 102(12): 470-475, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38378462

RESUMO

INTRODUCTION: The ureter is present in surgical field during inguinal hernia repair in 0.5-4% of cases. It typically occurs in obese patients, in men and patients after kidney transplants. Right-sided and indirect location of ureteral herniation prevails. The clinical picture is mostly asymptomatic, but possible manifestations include increased frequency of urination with urgency, nocturia, recurrent pyelonephritis, urosepsis, feeling of incomplete emptying of the bladder, signs of GIT obstruction. Diagnostic methods include retrograde pyelography or CT urography. Surgical treatment is indicated in every case of ureteral herniation. Reposition of the ureter retroperitoneally and standard plasty of the inguinal canal is the method of choice. METHODS: 33 cases of ureteral hernia were reviewed in order to write a systematized review of the topic. The case report describes a 68-year-old patient with prostatic hyperplasia and dysuria treated at our institution. A preoperative CT examination with intravenous contrast showed herniation of the right ureter into the inguinal area with hydronephrosis of 2nd degree. Preoperative insertion of a mono-J stent into the right ureter and reposition of the ureter retroperitoneally followed by hernia repair using alloplastic material was performed. There were no postoperative complications. RESULTS AND CONCLUSION: In risky cases, the surgeon should assume the possible presence of a ureter in the inguinal region. Careful dissection in the inguinal area reduces the risk of iatrogenic damage to the ureter.


Assuntos
Hérnia Inguinal , Transplante de Rim , Ureter , Masculino , Humanos , Idoso , Ureter/transplante , Hérnia Inguinal/complicações , Hérnia Inguinal/cirurgia , Transplante de Rim/efeitos adversos , Herniorrafia/métodos , Virilha
20.
Int J Mol Sci ; 25(3)2024 Feb 03.
Artigo em Inglês | MEDLINE | ID: mdl-38339137

RESUMO

Kidney transplantation is the preferred gold standard modality of treatment for kidney failure. Bone disease after kidney transplantation is highly prevalent in patients living with a kidney transplant and is associated with high rates of hip fractures. Fractures are associated with increased healthcare costs, morbidity and mortality. Post-transplant bone disease (PTBD) includes renal osteodystrophy, osteoporosis, osteonecrosis and bone fractures. PTBD is complex as it encompasses pre-existing chronic kidney disease-mineral bone disease and compounding factors after transplantation, including the use of immunosuppression and the development of de novo bone disease. After transplantation, the persistence of secondary and tertiary hyperparathyroidism, renal osteodystrophy, relative vitamin D deficiency and high levels of fibroblast growth factor-23 contribute to post-transplant bone disease. Risk assessment includes identifying both general risk factors and kidney-specific risk factors. Diagnosis is complex as the gold standard bone biopsy with double-tetracycline labelling to diagnose the PTBD subtype is not always readily available. Therefore, alternative diagnostic tools may be used to aid its diagnosis. Both non-pharmacological and pharmacological therapy can be employed to treat PTBD. In this review, we will discuss pathophysiology, risk assessment, diagnosis and management strategies to manage PTBD after kidney transplantation.


Assuntos
Distúrbio Mineral e Ósseo na Doença Renal Crônica , Fraturas Ósseas , Transplante de Rim , Osteoporose , Deficiência de Vitamina D , Humanos , Transplante de Rim/efeitos adversos , Distúrbio Mineral e Ósseo na Doença Renal Crônica/diagnóstico , Distúrbio Mineral e Ósseo na Doença Renal Crônica/etiologia , Distúrbio Mineral e Ósseo na Doença Renal Crônica/terapia , Osteoporose/etiologia , Fraturas Ósseas/etiologia , Deficiência de Vitamina D/complicações , Densidade Óssea/fisiologia
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