Publications by authors named "Marcen Letosa"

Introduction: The outcome and prognosis of systemic lupus erythematosus (SLE) in long-term kidney transplantation (KT) is variable. The objective of this study was to analyse the survival of the graft and the patient, comparing rates with a control group (primary glomerulonephritis [PGN]).

Materials And Methods: Forty-three patients receiving a KT with diagnosis of lupus nephritis (LN) and 367 patients with PGN were compared between January 1980 and December 2014.

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Background: Patients with renal graft dysfunction constitute an increasingly prevalent group of end-stage kidney disease (ESKD) patients that require dialysis therapy. These patients have special characteristics that set them apart from the ESKD general population. The aim of this study was to analyse the clinical condition and evolution of patients entering dialysis with a failed kidney graft at the time of restarting dialysis and over a year of therapy according to the K/DOQI guidelines, and to compare them with incidental patients with end-stage kidney disease.

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Background: Pauci-immune vasculitis is a heterogeneous disorder with an unfavourable prognosis. Renal involvement is frequently observed in antineutrophil cytoplasm autoantibody (ANCA)-associated small-vessel vasculitis and is an important cause of end-stage renal disease (ESRD). Renal replacement therapy (RRT) is frequently required.

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Objectives: To analyze the clinical presentation and therapeutic response of renal cell carcinoma (RCC) of the renal graft.

Methods: Analysis of the cases described in our centre and review of current literature.

Results: RCC has a higher incidence in transplant patients, affecting the graft in less than 10% of the cases.

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Venlafaxine is a selective serotonin, noradrenalin, and dopamine reuptake inhibitor. Although side effects are rare, venlafaxine has very occasionally been associated with hypersensitivity pneumonitis. We report the case of a 61-year-old woman diagnosed with depressive disorder and treated with venlafaxine (Dobupal) at a dose of 150 mg/d for 18 months.

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Overall survival of HIV-infected has increased over the last ten years. In parallel a higher need for renal replacement therapy (RRT) in this population has been more observed. RRT associated complications and outcomes greatly varied since the introduction of highly active antiretroviral therapy (HAART) and scarce data is available regarding the outcome of peritoneal dialysis (PD) in HIV-infected patients under HAART.

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Introduction: It's been demonstrated laparoscopic access determines a lower surgical stress, by measurement of several markers as different interleuquines (IL) or C-reactive protein (CRP). Endothelin 1 (ET-1) is a powerful vasoconstrictor produced in renal endothelium scarcely studied in laparoscopy. The objective of this study is to analyze immune response during laparoscopic and open donor nephrectomy, in a porcine experimental model by means of measuring IL-2, 10, tumoral necrosis factor alpha (TNFalpha), CRP and ET-1.

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Introduction: Living donor renal transplant reports a higher patient and graft survival in comparison to cadaver donor and represents a good alternative facing the current lack of organs for transplant.

Goals: To analyze comparatively in an experimental model (pig) the influence of ischemia-reperfusion and functional outcome of renal graft retrieved by open Vs laparoscopic nephrectomy.

Material And Methods: 30 lab pigs were nephrectomized (left kidney): 15 by laparoscopy and 15 by open surgery, as living donors, in a model of renal autotransplant.

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Introduction And Objectives: Simultaneous kidney and pancreas transplant is a good treatment for both renal and pancreas insufficiency. Experimental apply of genitourinary tract for pancreas implantation is reported in this work.

Material And Method: Twenty animals aged as average 5.

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An update on aspects and use of different experimental models applied in kidney transplant research is presented . This paper includes qualities, as long as similarities between most frequently used animal models and human clinical standards. Contributions of those models based on microsurgical or laparoscopic techniques are revised.

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Objectives: To analyze the modifications induced by laparoscopic and open nephrectomies in living donor transplantation on cytokines, to evaluate operative trauma of different surgical techniques and the influence on ischemia/reperfusion syndrome and renal function.

Methods: Thirty pigs underwent left nephrectomy, 15 by laparoscopy and 15 by open approach in an experimental autotransplantation model.

Results: Serum level of IL-2, IL-6, IL-10 and tumor necrosis factor (TNF) were lower during laparoscopic than open nephrectomy: 6.

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Objectives: It has been demonstrated that abdominal high-pressure and the use of CO2 pneumoperitoneum induce changes of the cardiovascular and respiratory systems, attributable to two factors: changes of the cardiac output (CO) and hypercarbia. Other modifications derived from these facts include changes of the systemic vascular resistances (SVR), blood pressure (BP), central venous pressure (CVP), vascular changes like modifications of the renal blood flow (RBF), carotid flow (CF), portal flow, and hepatic artery flow (HAF). Our objective is to analyze the hemodynamic modifications induced by pneumoperitoneum on renal blood flow, carotid flow, portal flow and hepatic artery flow in a porcine experimental model.

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Background: The increase of intraabdominal pressure to 10 mmHg provokes a decrease of renal blood flow (RBF). Pneumoperitoneum during laparoscopic techniques with intra-abdominal pressure (IAP) to 15 mmHg, results in a decrease in RBF, urine output and glomerular filtration rate (GFR).

Purpose: Analyze the changes in RBF, urine output an GFR in a porcine experimental model during open vs laparoscopic nephrectomy.

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Objectives: To analyze the current indications for renal autotransplantation, as well as the technical features, complications and long-term follow-up of the technique.

Methods: From 1990 to 2005 we have performed autotransplantation in 10 patients, 7 adults and 3 children. The indication was established due to vascular pedicle pathology in 8 cases and ureteral lesion in 2.

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Objectives: The new immunosuppressive regimens in kidney transplantation have diminished the rate of acute rejection and improved graft survival. However, the use of new agents results in the development of surgical complications. The authors analyze the incidence of such complications accordingly to the type of drug.

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Objectives: The aim of the study is to analyze the usefulness of ultrasound and Doppler ultrasound for the evaluation of transplant donors and recipients, for renal transplant follow-up and for the resolution of surgical complications after renal transplant.

Methods: Abdominal ultrasound was performed in donors and recipients of renal grafts. In the recipients with vascular risk factors a Doppler ultrasound of the iliac and lower limb arteries was systematically done.

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Percutaneous nephrostomy has been one of most used palliative method of urinary diversion to treat cronic renal failure in neoplasic patients. Psychological and social factors meke this measure to be rejected by some patients even sin situations where this is the only action that would make their survival longer. The utilization of ureteral stents provides benefits to a certain percentage of patients, not being possible its usage in all the occassions.

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Background: The goal of this research is to make a comparative analysis of acute tubular necrosis (NTA) incidence in function of preservation solution used: Wisconsin vs Celsior.

Methods: From January 1994 to December 2002, 229 kidney transplantation procedures were executed; 190 of them were perfused with Wisconsin (82.9%) and 39 with Celsior (17.

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Objective: To determinate the efficacy in the treatment of ureteral estenoses after renal transplantation with metallic self-expandable stent.

Materials And Methods: From october of 1995 to april of 2002, 8 ureteral obstruction post renal transplantation have treated by means of implants of a metallic self-expandable stent (6 men and 2 women). The average time of pursuit was of 30 months (rank 2-53 months).

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