Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
1.
J Clin Med ; 13(11)2024 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-38892922

RESUMO

The demographic profile of patients transitioning from chronic kidney disease to kidney replacement therapy is changing, with a higher prevalence of aging patients with multiple comorbidities such as diabetes mellitus and heart failure. Cardiovascular disease remains the leading cause of mortality in this population, exacerbated by the cardiovascular stress imposed by the HD procedure. The first year after transitioning to hemodialysis is associated with increased risks of hospitalization and mortality, particularly within the first 90-120 days, with greater vulnerability observed among the elderly. Based on data from clinics in Fresenius Medical Care Europe, Middle East, and Africa NephroCare, this review aims to optimize hemodialysis procedures to reduce mortality risk in stable incident and prevalent patients. It addresses critical aspects such as treatment duration, frequency, choice of dialysis membrane, dialysate composition, blood and dialysate flow rates, electrolyte composition, temperature control, target weight management, dialysis adequacy, and additional protocols, with a focus on mitigating prevalent intradialytic complications, particularly intradialytic hypotension prevention.

2.
Vasc Med ; 29(4): 390-397, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38607943

RESUMO

BACKGROUND: Chronic kidney disease is associated with increased rates of incidence, morbidity, and mortality in lower-extremity peripheral artery disease (PAD). No specific marker for a functional risk assessment of kidney disease in PAD is known, especially at the early stages. Thus, we speculated that urinary vanin-1 (uVNN1), a marker of oxidative stress even in early kidney injury, could further stratify outcome assessment in patients with PAD. METHODS: Patients with stable PAD (n = 304) of the Vienna medical cohort were followed up for up to 10 years and the outcome was assessed by central death database queries. uVNN1 was measured by enzyme-linked immunosorbent assay (ELISA) at study inclusion and normalized to urinary creatinine (uVNN1/Cr). During the observation time (9.3, 7.0-9.8 years), 104 patients died, 54.8% of which were due to cardiovascular causes. RESULTS: uVNN1/Cr was associated with a urine albumin-creatinine ratio (UACR) (R = 0.166, p = 0.004) but not with an estimated glomerular filtration rate (R = 0.102, p = 0.077). Levels of uVNN1/Cr did not differ between asymptomatic and symptomatic PAD (p = 0.406). Kaplan-Meier curves showed a clear-cut association with higher all-cause (log-rank p = 0.034) and cardiovascular mortality (log-rank p = 0.032) with higher uVNN1/Cr levels. Similarly, significant associations for all-cause (hazard ratio [HR] 1.34, 95% CI [1.08-1.67], p = 0.009) and cardiovascular mortality (HR 1.45, 95% CI [1.06-1.99], p = 0.020) could be seen in multivariable Cox regression models. CONCLUSIONS: uVNN1/Cr showed an independent association with both all-cause and cardiovascular mortality in patients with PAD and was associated with early kidney disease. Thus, uVNN1 could be a useful marker for risk stratification of kidney disease in PAD.


Assuntos
Biomarcadores , Doença Arterial Periférica , Valor Preditivo dos Testes , Humanos , Doença Arterial Periférica/mortalidade , Doença Arterial Periférica/diagnóstico , Doença Arterial Periférica/urina , Masculino , Biomarcadores/urina , Biomarcadores/sangue , Feminino , Idoso , Áustria/epidemiologia , Pessoa de Meia-Idade , Fatores de Risco , Fatores de Tempo , Medição de Risco , Prognóstico , Ensaio de Imunoadsorção Enzimática , Creatinina/urina , Creatinina/sangue , Amidoidrolases/urina , Causas de Morte , Proteínas Ligadas por GPI/urina , Taxa de Filtração Glomerular , Idoso de 80 Anos ou mais , Estresse Oxidativo , Albuminúria/diagnóstico , Albuminúria/urina , Albuminúria/mortalidade , Insuficiência Renal Crônica/mortalidade , Insuficiência Renal Crônica/diagnóstico , Insuficiência Renal Crônica/urina , Insuficiência Renal Crônica/fisiopatologia , Rim/fisiopatologia , Estudos Prospectivos , Modelos de Riscos Proporcionais , Urinálise
3.
Atherosclerosis ; 370: 12-17, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36898866

RESUMO

BACKGROUND AND AIMS: Secondary calciprotein particles (CPP-II) induce inflammation and contribute to vascular calcification. CPP-II size is associated with vascular calcification in patients with chronic kidney disease (CKD) and all-cause mortality in hemodialysis patients. Here, we investigate for the first time a possible role of CPP-II size in patients with peripheral artery disease (PAD) without severe CKD. METHODS: We measured the hydrodynamic radius (Rh) of CPP-II by using dynamic light scattering in a cohort of 281 PAD patients. Mortality was evaluated over a period of ten years by central death registry queries. 35% of patients died during the observation period (median of 8.8 (6.2-9.0) years). Cox-regression analyses were performed to estimate hazard ratios (HR) and 95% confidence intervals (CI) and to allow for multivariable adjustment. RESULTS: The mean CPP-II size was 188 (162-218) nm. Older patients, patients with reduced kidney function, and those with media sclerosis had larger CPP-II (p < 0.001, p = 0.008, and p = 0.043, retrospectively). There was no association between CPP-II size and overall atherosclerotic disease burden (p = 0.551). CPP-II size was independently significantly associated with all-cause (HR 1.33 (CI 1.01-1.74), p = 0.039) and cardiovascular mortality (HR 1.52 (CI 1.05-2.20), p = 0.026) in multivariable regression analyses. CONCLUSIONS: Large CPP-II size is associated with mortality in PAD patients and might be a new feasible biomarker for the presence of media sclerosis in this patient population.


Assuntos
Doença Arterial Periférica , Insuficiência Renal Crônica , Calcificação Vascular , Humanos , Tamanho da Partícula , Estudos Retrospectivos , Esclerose/complicações , Calcificação Vascular/etiologia , Insuficiência Renal Crônica/diagnóstico , Insuficiência Renal Crônica/complicações , Doença Arterial Periférica/diagnóstico , Doença Arterial Periférica/complicações
4.
Thromb Haemost ; 122(6): 1040-1046, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34719013

RESUMO

Peripheral artery disease (PAD) has been shown to be linked to elevated cardiovascular risk. The novel T50 test quantifies calcification propensity of serum and has been associated with cardiovascular events and mortality in patients with chronic kidney disease (CKD) and in the general population. This study investigated the association of calcification propensity measured by the T50 test in 287 patients with PAD without severe CKD. Major cardiovascular events (MACEs) including nonfatal stroke and nonfatal myocardial infarction and all-cause death (MACE + ) were evaluated after a median follow-up of 4 years and long-term cardiovascular and all-cause mortality after a median follow-up of 8.7 years by Kaplan-Meier and Cox regression analyses. Mean T50 time was 268 ± 63 minutes in the study cohort (age 69 ± 10 years, 32% women, 47% diabetes). Low T50 values that signify high calcification propensity were significantly associated with the occurrence of MACE+ (hazard ratio [HR]: 0.72; 95% confidence interval [CI]: 0.55-0.94). This association sustained multivariate adjustment for cardiovascular risk factors (CVRFs), Fontaine PAD stage, and prevalent media sclerosis (HR: 0.65; CI: 0.47-0.91). Cardiovascular mortality was significantly associated with T50 after multivariate adjustment for CVRF (HR: 0.72; CI 0.53-0.99), but not all-cause mortality (HR: 0.80; CI: 0.64-1.01). In conclusion, calcification propensity associates with MACE+ and cardiovascular mortality in patients with PAD.


Assuntos
Calcinose , Doença Arterial Periférica , Insuficiência Renal Crônica , Idoso , Calcinose/epidemiologia , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Doença Arterial Periférica/complicações , Doença Arterial Periférica/diagnóstico , Modelos de Riscos Proporcionais , Fatores de Risco
5.
Front Med (Lausanne) ; 8: 672348, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34222283

RESUMO

Background: The propensity of serum to calcify, as assessed by the T50-test, associates with mortality in patients with chronic kidney disease. In chronic heart failure, phosphate and fibroblast growth factor-23 (FGF-23), which are important components of the vascular calcification pathway, have been linked to patient survival. Here, we investigated whether T50 associates with overall and cardiovascular survival in patients with chronic heart failure with reduced ejection fraction (HFrEF). Methods: We measured T50, intact and c-terminal FGF-23 levels in a cohort of 306 HFrEF patients. Associations with overall and cardiovascular mortality were analyzed in survival analysis and Cox-regression models. Results: After a median follow-up time of 3.2 years (25th-75th percentile: 2.0-4.9 years), 114 patients (37.3%) died due to any cause and 76 patients (24.8%) died due to cardiovascular causes. 139 patients (45.4%) had ischemic and 167 patients (54.6%) had non-ischemic HFrEF. Patients with ischemic HFrEF in the lowest T50-tertile had significantly greater 2-year cardiovascular mortality compared to patients in higher tertiles (p = 0.011). In ischemic but not in non-ischemic HFrEF, T50 was significantly associated with cardiovascular mortality in univariate (p = 0.041) and fully adjusted (p = 0.046) Cox regression analysis. Significant associations of intact and c-terminal FGF-23 with all-cause and cardiovascular mortality in univariate Cox regression analysis did not remain significant after adjustment for confounding factors. Conclusion: T50 is associated with 2-year cardiovascular mortality in patients with ischemic HFrEF but not in non-ischemic HFrEF. More research on the role of T50 measurements in coronary artery disease is warranted.

6.
Front Med (Lausanne) ; 7: 585628, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33195341

RESUMO

Pure red cell aplasia (PRCA) after ABO-incompatible allogeneic hematopoietic stem cell transplantation (HSCT) is caused by persisting host-derived isohemagglutinins directed against donor red blood cell (RBC) antigens. ABO antigen-specific immunoadsorption (ABO-IA) with Glycosorb®, commonly used for desensitization therapy in ABO-incompatible living donor renal transplantation, specifically eliminates circulating isohemagglutinins and might represent a novel treatment option for post-HSCT PRCA. In this prospective observational (n = 3) and retrospective (n = 3) analysis of six adult HSCT-recipients with PRCA, ABO-IA was initiated at 159 (range: 104-186) days following HSCT. The median treatment frequency was 4.5 (range: 3.9-5.5) sessions/week. ABO-IA-treatment led to a continuous decrease in isohemagglutinin titers. Reticulocytes increased to ≥30 G/L after 17.5 (range: 4-37) immunoadsorption sessions over 28.5 (range: 6-49) days and continued to rise after that. By the end of the 3-month follow-up period after discontinuation of ABO-IA, all patients showed a sustained remission of PRCA and were independent of erythropoietin-stimulating agents and transfusions. No case of infection or graft-versus-host disease was observed. After a median follow-up of 22.03 (range: 6.08-149.00) months after ABO-IA-treatment, all patients were alive and showed a stable RBC engraftment of the donor blood group. Our data provide the first evidence for ABO-IA as an effective treatment for post-HSCT PRCA.

7.
Curr Opin Nephrol Hypertens ; 29(6): 623-629, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32941190

RESUMO

PURPOSE OF REVIEW: With the aging population of kidney transplant candidates, a history of malignancy is an increasingly prevalent finding. Tumors can constitute a contraindication for transplantation or can lead to a delay of acceptance to the waiting-list. Current waiting time guidelines mainly refer to early data collected nearly 30 years ago, when the knowledge on tumors was, by current standards, still limited. RECENT FINDINGS: Today, cancers can usually be divided into many different biological subtypes, according to histological and molecular subclassification and the availability of genetic testing. A more precise stratification and targeted antitumor therapies have led to better therapy outcomes or even cures from certain malignancies and to a better appreciation of tumor risks for the patient. SUMMARY: Even though transplant patients do have an increased risk for malignancies, it is often overlooked that patients, while on dialysis, are equally prone to develop a tumor. Competing risks (e.g. cardiovascular, mortality risks) through prolonged time on dialysis have to be equally considered, when the decision for acceptance of a patient to the waiting-list is made. Current waiting time suggestions should be critically reconsidered for every patient after a thorough discussion with an oncologist, including new diagnostic and therapeutic strategies, as well as novel risk stratifications.


Assuntos
Transplante de Rim , Idoso , Humanos , Transplante de Rim/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Neoplasias , Diálise Renal/mortalidade , Listas de Espera
8.
J Clin Med ; 9(8)2020 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-32823844

RESUMO

Anemia in chronic kidney disease (CKD) is an almost universal complication of this condition. Fibroblast growth factor 23 (FGF23), a key-player in mineral metabolism, is reportedly associated with anemia and hemoglobin levels in non-dialysis CKD patients. Here, we sought to further characterize this association while taking into account the biologically active, intact fraction of FGF23, iron metabolism, and erythropoietin (EPO). Hemoglobin, EPO, iron, and mineral metabolism parameters, including both intact and c-terminal-FGF23 (iFGF23 and cFGF23, respectively) were measured cross-sectionally in 225 non-dialysis CKD patients (stage 1-5, median eGFR: 30 mL/min./1.73m2) not on erythropoiesis stimulating agents or intravenous iron therapy. Statistical analysis was performed by multiple linear regression. After adjustment for eGFR and other important confounders, only cFGF23 but not iFGF23 was significantly associated with hemoglobin levels and this association was largely accounted for by iron metabolism parameters. cFGF23 but not iFGF23 was also associated with mean corpuscular hemoglobin (MCH) and mean corpuscular volume (MCV), again in dependence on iron metabolism parameters. Similarly, EPO concentrations were associated with cFGF23 but not iFGF23, but their contribution to the association of cFGF23 with hemoglobin levels was marginal. In pre-dialysis CKD patients, the observed association of FGF23 with hemoglobin seems to be restricted to cFGF23 and largely explained by the iron status.

9.
BMC Nephrol ; 21(1): 256, 2020 07 06.
Artigo em Inglês | MEDLINE | ID: mdl-32631286

RESUMO

BACKGROUND: Renal loss of potassium (K+) and magnesium (Mg2+) in salt losing tubulopathies (SLT) leads to significantly reduced Quality of Life (QoL) and higher risks of cardiac arrhythmia. The normalization of K+ is currently the most widely accepted treatment target, however in even excellently designed RCTs the increase of K+ was only mild and rarely normalized. These findings question the role of K+ as the ideal marker of potassium homeostasis in SLT. Aim of this hypothesis-generating study was to define surrogate endpoints for future treatment trials in SLT in terms of their usefulness to determine QoL and important clinical outcomes. METHODS: Within this prospective cross-sectional study including 11 patients with SLTs we assessed the biochemical, clinical and cardiological parameters and their relationship with QoL (RAND SF-36). The primary hypothesis was that QoL would be more dependent of higher aldosterone concentration, assessed by the transtubular-potassium-gradient (TTKG). Correlations were evaluated using Pearson's correlation coefficient. RESULTS: Included patients were mainly female (82%, mean age 34 ± 12 years). Serum K+ and Mg2+ was 3.3 ± 0.6 mmol/l and 0.7 ± 0.1 mmol/l (mean ± SD). TTKG was 9.5/3.4-20.2 (median/range). While dimensions of mental health mostly correlated with serum Mg2+ (r = 0.68, p = 0.04) and K+ (r = 0.55, p = 0.08), better physical health was associated with lower aldosterone levels (r = -0.61, p = 0.06). TTKG was neither associated with aldosterone levels nor with QoL parameters. No relevant abnormalities were observed in neither 24 h-ECG nor echocardiography. CONCLUSIONS: Hyperaldosteronism, K+ and Mg2+ were the most important parameters of QoL. TTKG was no suitable marker for hyperaldosteronism or QoL. Future confirmatory studies in SLT should assess QoL as well as aldosterone, K+ and Mg2+.


Assuntos
Síndrome de Bartter/fisiopatologia , Síndrome de Gitelman/fisiopatologia , Hiperaldosteronismo/fisiopatologia , Hipopotassemia/fisiopatologia , Magnésio/metabolismo , Qualidade de Vida , Adulto , Aldosterona/metabolismo , Síndrome de Bartter/metabolismo , Síndrome de Bartter/psicologia , Feminino , Síndrome de Gitelman/metabolismo , Síndrome de Gitelman/psicologia , Homeostase , Humanos , Hiperaldosteronismo/metabolismo , Hiperaldosteronismo/psicologia , Hipopotassemia/metabolismo , Hipopotassemia/psicologia , Masculino , Pessoa de Meia-Idade , Potássio/metabolismo , Estudos Prospectivos , Desequilíbrio Hidroeletrolítico/metabolismo , Desequilíbrio Hidroeletrolítico/fisiopatologia , Desequilíbrio Hidroeletrolítico/psicologia , Adulto Jovem
10.
Transplantation ; 104(1): 145-153, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31343566

RESUMO

BACKGROUND: Urological obstructive complications (UOC) affect up to 15% of kidney transplants (KTX). Most cases are excluded by ultrasonography (US); however, accuracy may be limited in the early transplant phase. Features of acute tubular injury (ATI) in KTX biopsy may be informative but histological features indicating UOC are ill defined. Tubular ectasia (TE) was shown to be associated with UOC in experimental data. We evaluated the association of histomorphological features, particularly TE, with occult (=without relevant hydronephrosis in US) UOC and renal outcomes. METHODS: We included all recipients with an early indication biopsy (976 of 1537 consecutive KTX). The biopsy finding of TE classified as "suspicious of UOC" was compared with the following endpoints: delayed graft function, estimated glomerular filtration rate, and occult UOC. Additionally, histopathological features of ATI were reevaluated by a single pathologist to increase diagnostic accuracy. RESULTS: Fifty-eight (5.9%) patients presented with TE, which was not related to delayed graft function or estimated glomerular filtration rate. Forty percent of patients had a UOC (most frequently ureteral stenosis) close to biopsy. Comparing these biopsies to matched controls, TE was significantly associated with UOC (odds ratio 2.69; P = 0.018). After histopathological reevaluation of these biopsies including additional features of ATI, we developed a final multivariate model with a highly significant relationship to UOC (Receiver operating characteristic-area under the curve: 0.77; P = 0.001). The model provides a specificity of 78% and negative predictive value of 73%. CONCLUSIONS: TE together with additional signs of ATI indicates occult UOC. This histological phenotype should trigger more detailed evaluation for UOC when there is no evidence of relevant hydronephrosis in the ultrasonography.


Assuntos
Aloenxertos/patologia , Transplante de Rim/efeitos adversos , Túbulos Renais/patologia , Complicações Pós-Operatórias/epidemiologia , Obstrução Ureteral/epidemiologia , Adulto , Aloenxertos/fisiopatologia , Biópsia , Função Retardada do Enxerto/epidemiologia , Função Retardada do Enxerto/fisiopatologia , Dilatação Patológica/epidemiologia , Dilatação Patológica/etiologia , Dilatação Patológica/patologia , Feminino , Taxa de Filtração Glomerular/fisiologia , Humanos , Rim , Túbulos Renais/fisiopatologia , Masculino , Pessoa de Meia-Idade , Modelos Estatísticos , Análise Multivariada , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/patologia , Complicações Pós-Operatórias/fisiopatologia , Valor Preditivo dos Testes , Estudos Retrospectivos , Medição de Risco , Transplante Homólogo/efeitos adversos , Obstrução Ureteral/etiologia , Obstrução Ureteral/patologia , Obstrução Ureteral/fisiopatologia
11.
Sci Rep ; 7(1): 17941, 2017 12 20.
Artigo em Inglês | MEDLINE | ID: mdl-29263429

RESUMO

Vascular calcification is a component of cardiovascular disease, which is leading cause of death in patients with chronic kidney disease (CKD). A functional assay (T50-test) measuring the propensity of human serum to calcify associates with mortality and cardiovascular events in CKD patients. Calcification propensity is known to increase with CKD stage. We investigated whether the T50 readout is directly dependent on excretory kidney function (eGFR) or rather explained by deranged parameters of bone and mineral metabolism in the course of CKD. T50, along with markers implicated in calcification and mineral metabolism, were measured in a cross-sectional cohort of 118 patients with CKD stage 1-5. Associations of T50 with measured parameters were analysed and partial correlations performed to test to which extent the association of T50 with eGFR can be attributed to variation of these parameters. T50 correlates with eGFR, but serum levels of phosphate and calcium largely explain this association. Phosphate, magnesium, fetuin A, albumin, bicarbonate, and serum cross-laps but not Parathyroid Hormone or Fibroblast Growth Factor 23 are associated with T50 in multivariate adjusted models. These findings indicate that T50 values depend mainly on the concentration of promoters and inhibitors of calcification in serum, but not excretory kidney function.


Assuntos
Calcinose/patologia , Rim/fisiopatologia , Insuficiência Renal Crônica/patologia , Adulto , Calcinose/sangue , Calcinose/fisiopatologia , Cálcio/sangue , Estudos Transversais , Feminino , Taxa de Filtração Glomerular , Humanos , Testes de Função Renal , Masculino , Pessoa de Meia-Idade , Fosfatos/sangue , Insuficiência Renal Crônica/sangue , Insuficiência Renal Crônica/fisiopatologia
13.
PLoS One ; 12(2): e0171873, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28199411

RESUMO

Hemodialysis (HD) patients face increased fracture risk, which is further associated with elevated risk of hospitalization and mortality. High-resolution peripheral computed tomography (HR-pQCT) has advanced our understanding of bone disease in chronic kidney disease by characterizing distinct changes in both the cortical and trabecular compartments. Increased cortical porosity (Ct.Po) has been shown to be associated with fracture in patients with osteopenia or in postmenopausal diabetic women. We tested whether the degree of Ct.Po identifies hemodialysis patients with prevalent fragility fractures in comparison to bone mineral density (BMD) assessed by dual X-ray absorptiometry (DXA). We performed a post-hoc analysis of a cross-sectional study in 76 prevalent hemodialysis patients. Markers of mineral metabolism, coronary calcification score, DXA-, and HR-pQCT-data were analyzed, and Ct.Po determined at radius and tibia. Ct.Po was significantly higher in patients with fracture but association was lost after adjusting for age and gender (tibia p = 0.228, radius p = 0.5). Instead, femoral (F) BMD neck area (p = 0.03), F T-score neck area (p = 0.03), radius (R) BMD (p = 0.03), R T-score (p = 0.03), and cortical HR-pQCT indices such as cortical area (Ct.Ar) (tibia: p = 0.01; radius: p = 0.02) and cortical thickness (Ct.Th) (tibia: p = 0.03; radius: p = 0.02) correctly classified patients with fragility fractures. Area under receiver operating characteristic curves (AUC) for Ct.Po (tibia AUC: 0.711; p = 0.01; radius AUC: 0.666; p = 0.04), Ct.Ar (tibia AUC: 0.832; p<0.001; radius AUC: 0.796; p<0.001), and F neck BMD (AUC: 0.758; p = 0.002) did not differ significantly among each other. In conclusion, measuring Ct.Po is not superior to BMD determined by DXA for identification of HD patients with fragility fracture.


Assuntos
Fêmur/fisiopatologia , Fraturas Ósseas/diagnóstico , Fraturas Ósseas/etiologia , Rádio (Anatomia)/fisiopatologia , Insuficiência Renal Crônica/complicações , Tíbia/fisiopatologia , Absorciometria de Fóton , Adulto , Idoso , Área Sob a Curva , Densidade Óssea , Estudos Transversais , Feminino , Fêmur/diagnóstico por imagem , Fêmur/fisiologia , Fraturas Ósseas/fisiopatologia , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Porosidade , Curva ROC , Rádio (Anatomia)/diagnóstico por imagem , Diálise Renal , Insuficiência Renal Crônica/fisiopatologia , Insuficiência Renal Crônica/terapia , Tíbia/diagnóstico por imagem , Tíbia/fisiologia , Tomografia Computadorizada por Raios X
14.
Oncology ; 90(3): 160-6, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26871562

RESUMO

OBJECTIVE: Umbilical cord blood (UCB) is an important graft source for hematopoietic stem cell transplantation (SCT). Due to less stringent human leukocyte antigen (HLA) matching criteria compared to bone marrow or peripheral blood stem cells, UCB enables patients lacking an HLA-matched donor to receive potentially curative SCT. METHODS: We retrospectively analyzed the efficacy and safety of UCB transplantation (UCBT) at our center. RESULTS: Between June 2009 and June 2015, 27 UCBT were performed in 25 patients. Reasons for the use of UCB were lack of adequate related or unrelated stem cell donor (n = 20) and graft failure after previous SCT (n = 7). Median time to neutrophil engraftment was 22 days. Four patients experienced primary graft failure. Thirteen patients developed acute graft-versus-host disease (GVHD), whereupon 6 subsequently also developed chronic GVHD. After a median follow-up time of 19 months, 9 patients relapsed and 12 patients died. Cause of death was relapse in 8 and transplant-related events in 4 patients. Median overall survival and progression-free survival have not been reached yet. CONCLUSION: In our experience, UCBT is an alternative graft source for patients lacking a suitable related or unrelated donor and a feasible treatment option for patients experiencing graft failure after previous SCT.


Assuntos
Sangue Fetal/transplante , Doença Enxerto-Hospedeiro/etiologia , Doença Enxerto-Hospedeiro/cirurgia , Neoplasias Hematológicas/cirurgia , Transplante de Células-Tronco Hematopoéticas , Terapia de Salvação/métodos , Doença Aguda , Adulto , Idoso , Doença Crônica , Estudos de Viabilidade , Feminino , Seguimentos , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Transplante Autólogo , Transplante Homólogo , Resultado do Tratamento
15.
Wien Klin Wochenschr ; 128(9-10): 384-6, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26919852

RESUMO

UNLABELLED: Neurologic complications after allogeneic hematopoietic stem cell transplantation (HSCT) are rare but poorly understood. We present a case report of a 57-year-old-male patient who was diagnosed in 2009 with acute myeloid leukemia (AML). He received two standard induction chemotherapies, as well as a following consolidation. Six months later, an allogeneic HSCT was performed. Shortly after HSCT the patient developed progressive polyneuropathy of the lower legs and hypoesthesia. Five months later a severe dementia followed. All images of the brain and spine showed no specific pathologies. High dose corticosteroids and immunoglobulins did not improve the neurologic symptoms. Due to severe worsening of the neuropsychiatric status and the clinical presentation, chronic inflammatory demyelinating polyneuropathy (CIDP) was suspected. Therefore, the patient received ten cycles of plasmapheresis. The patient showed a significant improvement of the neuropsychiatric symptoms and cognitive status. CONCLUSIONS: Immune mediated neuropathies after allogeneic HSCT, such as CIDP, have great variability in symptoms and presentation and are challenging to diagnose and treat. Plasmapheresis is a safe and efficient treatment for patients with unclear persisting autoimmune neuropathy after HSCT.


Assuntos
Transtornos Cognitivos/prevenção & controle , Demência/prevenção & controle , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Plasmaferese/métodos , Polirradiculoneuropatia Desmielinizante Inflamatória Crônica/diagnóstico , Polirradiculoneuropatia Desmielinizante Inflamatória Crônica/terapia , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/etiologia , Demência/diagnóstico , Demência/etiologia , Humanos , Leucemia Mieloide Aguda/complicações , Leucemia Mieloide Aguda/terapia , Masculino , Pessoa de Meia-Idade , Transplante Homólogo/efeitos adversos , Resultado do Tratamento
16.
Oncology ; 89(4): 196-204, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26228581

RESUMO

Autologous hematopoietic stem cell transplantation (ASCT) is the standard of care for selected patients with multiple myeloma (MM). Many data exist on ASCT in the era of novel agents. We retrospectively analyzed 189 patients (108 males and 81 females) with biopsy-proven MM, who had received ASCT after induction therapy with either conventional chemotherapy alone or in combination with novel agents at our department. The outcomes of both groups and the risk factors for shorter survival were investigated. The most commonly used induction chemotherapy prior to ASCT was VAD (vincristine, doxorubicin and dexamethasone, 42%), followed by PAD (bortezomib, doxorubicin and dexamethasone, 21%). One-hundred and twenty-nine patients (68%) received cyclophosphamide-recombinant human granulocyte colony-stimulating factor for stem cell mobilization. No differences were observed for progression-free survival in terms of the number of transplanted CD34+ cells (p = 0.261). A trend in improved overall survival (OS) was seen for the use of novel agents when compared to conventional chemotherapy (164.3 vs. 82.0 months; p = 0.046). The International Staging System stages had a significant (p = 0.036) impact on OS. The novel agents improved OS in our patients with MM undergoing ASCT when compared to conventional chemotherapy regimens. The number of transplanted CD34+ cells had no significant impact on hematopoietic reconstitution.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Mieloma Múltiplo/tratamento farmacológico , Mieloma Múltiplo/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Antígenos CD34/metabolismo , Ciclofosfamida/administração & dosagem , Dexametasona/administração & dosagem , Intervalo Livre de Doença , Doxorrubicina/administração & dosagem , Feminino , Fator Estimulador de Colônias de Granulócitos/administração & dosagem , Transplante de Células-Tronco Hematopoéticas/métodos , Humanos , Quimioterapia de Indução/métodos , Masculino , Pessoa de Meia-Idade , Mieloma Múltiplo/metabolismo , Estudos Retrospectivos , Transplante Autólogo/métodos , Resultado do Tratamento , Vincristina/administração & dosagem
17.
Oncology ; 89(2): 118-23, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25895548

RESUMO

Mantle cell lymphoma (MCL) is a B cell non-Hodgkin's lymphoma characterized by a poor prognosis. Many different therapeutic approaches including intensive chemotherapy as well as new targeted therapies are established. However, overall survival remains unsatisfying. As the sole curative option, allogeneic hematopoietic stem cell transplantation (HSCT) has been described, but only a limited number of patients qualify for this procedure. We have retrospectively analyzed 7 patients with stage IV MCL undergoing allogeneic HSCT at our institution. A myeloablative regimen was used in 1 patient, while the other 6 patients received reduced-intensity conditioning. Four patients had an HLA-identical sibling, and the remaining 3 patients had an HLA-identical unrelated donor. One patient developed acute graft-versus-host disease (skin, grade III; intestine, grade II). Two patients died from transplant-related causes, 3 patients died due to progressive disease and the remaining 2 patients are still in complete remission 147 and 8 months after transplantation. Allogeneic HSCT offers a therapeutic treatment option for selected patients in a relapsed/refractory setting. The incorporation of novel agents has improved the outcome of patients with MCL. Thus, the role and optimal time point of allogeneic HSCT should be reevaluated in randomized trials.


Assuntos
Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Linfoma de Célula do Manto/mortalidade , Linfoma de Célula do Manto/terapia , Adulto , Idoso , Doença Enxerto-Hospedeiro , Humanos , Linfoma de Célula do Manto/patologia , Masculino , Pessoa de Meia-Idade , Indução de Remissão , Estudos Retrospectivos , Análise de Sobrevida , Transplante Homólogo , Resultado do Tratamento
18.
Wien Klin Wochenschr ; 127(3-4): 92-7, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25609569

RESUMO

BACKGROUND: In addition to conventional chemotherapeutic regimens and autologous transplantation, novel agents are now part of the treatment armamentarium against multiple myeloma (MM). To evaluate the presumed benefit of novel agents, we performed an analysis of patients with MM at our institution before and after the availability of novel agents. DESIGN AND METHODS: In all, 200 consecutive patients with newly diagnosed MM (male = 119; female = 81; median age: 61.5 years) treated at our institution between June 1993 and December 2008 were included in this retrospective analysis. Patient cohorts were defined according to date of diagnosis (before and after 01-Jan-2000, respectively), treatment received (chemotherapy only vs. therapy including novel agents), risk profile (International Staging System (ISS)-stage), and cytogenetic features. Primary focus of the analysis was overall survival (OS). RESULTS: Median OS for MM patients who received conventional chemotherapy was 45.2 months and for patients who received novel agents 74.6 months (P < 0.01). OS for those patients who relapsed after autotransplantation before 2000 was 35.2 months, but 72.7 months (P < 0.01) for those patients with a later relapse. Prolongation of survival for patients receiving novel agents was most evident for patients with ISS stage III (median OS 68.4 vs. 11.2 months for patients with chemotherapy only; P < 0.01). MM patients with an intermediate risk had a longer median OS when receiving novel agents (47.2 vs. 32.8 months). CONCLUSION: Treatment with novel agents in MM resulted in a significant prolongation of OS. Benefit of therapy with novel agents was particularly evident for transplant-eligible patients and MM patients with unfavorable prognosis.


Assuntos
Antineoplásicos/administração & dosagem , Mieloma Múltiplo/tratamento farmacológico , Mieloma Múltiplo/mortalidade , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos/classificação , Áustria/epidemiologia , Intervalo Livre de Doença , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Taxa de Sobrevida , Resultado do Tratamento
19.
Eur J Haematol ; 95(1): 75-82, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25546348

RESUMO

Primary central nervous system lymphoma (PCNSL) is a rare and malignant tumour type. Established treatment approaches include high-dose methotrexate (HD-MTX)-based chemotherapy and whole-brain radiotherapy (WBRT). WBRT is associated with significant neurotoxicity and autologous haematopoietic stem cell transplantation (ASCT) has been proposed as an alternative treatment - either in the 1st line setting after HD-MTX-based chemotherapy or as salvage treatment for relapsed/refractory PCNSL. We here report our single-centre experience with five PCNSL patients, who had achieved an objective response after a high-dose methotrexate-based induction therapy and consecutively received a high-dose chemotherapy, consisting of carmustine and thiotepa, followed by ASCT. We also provide a literature review on ASCL for PCNSL. Our data, with three of five patients in continuous complete remission and four of five patients alive after a median follow-up time of 8 months, as well as previously published results, show that ASCT is a safe treatment option that is able to induce tumour remissions in patients with PCNSL. However, controlled trials are needed to compare the long-term efficacy and tolerability of ASCT with other treatment approaches and also to establish the optimal sequence of treatment regimens in PCNSL patients.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias do Sistema Nervoso Central/terapia , Transplante de Células-Tronco Hematopoéticas , Quimioterapia de Indução/métodos , Linfoma não Hodgkin/terapia , Metotrexato/uso terapêutico , Adulto , Carmustina/uso terapêutico , Neoplasias do Sistema Nervoso Central/mortalidade , Neoplasias do Sistema Nervoso Central/patologia , Feminino , Humanos , Linfoma não Hodgkin/mortalidade , Linfoma não Hodgkin/patologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Tiotepa/uso terapêutico , Transplante Autólogo
20.
Ann Hematol ; 93(10): 1629-36, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24997682

RESUMO

Prognostic factors and outcomes of cancer patients with acute organ failure receiving chemotherapy (CT) in the intensive care unit (ICU) are still incompletely described. We therefore retrospectively studied all patients who received CT in any ICU of our institution between October 2006 and November 2013. Fifty-six patients with hematologic (n = 49; 87.5 %) or solid (n = 7; 12.5 %) malignancies, of which 20 (36 %) were diagnosed in the ICU, were analyzed [m/f ratio, 33:23; median age, 47 years (IQR 32 to 62); Charlson Comorbidity Index (CCI), 3 (2 to 5); Simplified Acute Physiology Score II (SAPS II), 50 (39 to 61)]. The main reasons for admission were acute respiratory failure, acute kidney failure, and septic shock. Mechanical ventilation and vasopressors were employed in 34 patients (61 %) respectively, hemofiltration in 22 (39 %), and extracorporeal life support in 7 (13 %). Twenty-seven patients (48 %) received their first CT in the ICU. Intention of therapy was cure in 46 patients (82 %). Tumor lysis syndrome (TLS) developed in 20 patients (36 %). ICU and hospital survival was 75 and 59 %. Hospital survivors were significantly younger; had lower CCI, SAPS II, and TLS risk scores; presented less often with septic shock; were less likely to develop TLS; and received vasopressors, hemofiltration, and thrombocyte transfusions in lower proportions. After discharge, 88 % continued CT and 69 % of 1-year survivors were in complete remission. Probability of 1- and 2-year survival was 41 and 38 %, respectively. Conclusively, administration of CT in selected ICU cancer patients was feasible and associated with considerable long-term survival as well as long-term disease-free survival.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Cuidados Críticos , Neoplasias/tratamento farmacológico , Injúria Renal Aguda/etiologia , Injúria Renal Aguda/terapia , Adulto , Idoso , Áustria/epidemiologia , Transfusão de Componentes Sanguíneos/estatística & dados numéricos , Neutropenia Febril Induzida por Quimioterapia/tratamento farmacológico , Neutropenia Febril Induzida por Quimioterapia/etiologia , Cuidados Críticos/estatística & dados numéricos , Intervalo Livre de Doença , Coagulação Intravascular Disseminada/etiologia , Oxigenação por Membrana Extracorpórea/estatística & dados numéricos , Feminino , Fator Estimulador de Colônias de Granulócitos/uso terapêutico , Neoplasias Hematológicas/complicações , Neoplasias Hematológicas/tratamento farmacológico , Neoplasias Hematológicas/mortalidade , Hemofiltração/estatística & dados numéricos , Mortalidade Hospitalar , Hospitais Universitários/estatística & dados numéricos , Humanos , Unidades de Terapia Intensiva/estatística & dados numéricos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Neoplasias/complicações , Neoplasias/diagnóstico , Neoplasias/mortalidade , Prognóstico , Indução de Remissão , Respiração Artificial/estatística & dados numéricos , Insuficiência Respiratória/etiologia , Insuficiência Respiratória/terapia , Estudos Retrospectivos , Índice de Gravidade de Doença , Choque Séptico/tratamento farmacológico , Choque Séptico/etiologia , Choque Séptico/terapia , Síndrome de Lise Tumoral/epidemiologia , Síndrome de Lise Tumoral/etiologia , Vasoconstritores/uso terapêutico
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA