Autosomal Dominant Tubulointerstitial Kidney Disease: Clinical Presentation of Patients With ADTKD-UMOD and ADTKD-MUC1.

Rationale & Objective: Autosomal dominant tubulointerstitial kidney disease (ADTKD) is a rare underdiagnosed cause of end-stage renal disease (ESRD). ADTKD is caused by mutations in at least 4 different genes: MUC1, UMOD, HNF1B, and REN.

Study Design: Retrospective cohort study.

Posttransplant Lymphoproliferative Disease and Inhibitors of Mammalian Target of Rapamycin: When a Quick Look Back Can Change the Perspective.

Posttransplant lymphoproliferative disease represents a heterogeneous group of diseases characterized by uncontrolled proliferation of lymphocytes, favored by immunosuppression. Several risk factors for its development have been described, with Epstein-Barr virus infection being a main cause of early-onset forms and chronic antigen stimulation of donors and/or accumulated immunosuppression as key factors of later forms of lymphocyte transformation. The present clinical case presents a patient diagnosed with posttransplant lymphoproliferative disease 3 years after renal transplant who had a potentially lethal complication related to conversion to inhibitors of mammalian target of rapamycin.

Adjustment of Eculizumab Dosage Pattern in Patients with Atypical Hemolytic Uremic Syndrome with Suboptimal Response to Standard Treatment Pattern.

In patients with atypical hemolytic uremic syndrome (aHUS), complement blocking by eculizumab rapidly halts the process of thrombotic microangiopathy and it is associated with clear long-term hematologic and renal improvements. Eculizumab treatment consists of a 4-week initial phase with weekly IV administration of 900 mg doses, followed by a maintenance phase with a 1,200 mg dose in the fifth week and every 14 ± 2 days thereafter. We present three patients with aHUS and suboptimal response to eculizumab treatment at the usual administration dosage who showed hematologic and renal improvements after an adjustment in the eculizumab treatment protocol.

Oxidative stress markers in predicting response to treatment with ferric carboxymaltose in nondialysis chronic kidney disease patients.

Background: Nearly half of all non-dialysis chronic kidney disease (CKD) patients respond to iron therapy. Factors affecting anemia response to iron therapy are not well characterized. Oxidative stress (OS) is a recognized factor for anemia in CKD and promotes erythropoiesis stimulating agent (ESA) resistance; however, the influence in predicting response to intravenous (IV) iron has not been evaluated.

Effect of ferric carboxymaltose on serum phosphate and C-terminal FGF23 levels in non-dialysis chronic kidney disease patients: post-hoc analysis of a prospective study.

Background: Some parenteral iron therapies have been found to be associated with hypophosphatemia. The mechanism of the decrease in serum phosphate is unknown. The aim of this study is to examine the effect of IV ferric carboxymaltose(FCM) on phosphate metabolism and FGF23 levels in patients with chronic kidney disease(CKD).

Oxidative stress and other risk factors for white matter lesions in chronic hemodialysis patients.

Background: Chronic kidney disease (CKD) is a risk factor for cardiovascular disease and promotes oxidative tress (OS), which has been implicated in the pathogenesis of white matter lesions (WML), a form of small-vessel cerebrovascular disease. The relationship between OS and WML in chronic hemodialysis (HD) patients has not yet been studied.

Methods: We studied 67 chronic HD patients, aged 40 - 65 years (average 54 years) without known cerebrovascular disease.

Acute and sub-acute effect of ferric carboxymaltose on inflammation and adhesion molecules in patients with predialysis chronic renal failure.

Background: Treatment with parenteral iron causes oxidative stress, inflammation and endothelial dysfunction. Ferric carboxymaltose (FCM) is a new preparation of non-dextran iron which, due to its pharmacokinetics and stability, may induce less toxicity than other iron molecules. The aim of this study was to analyse the effect of FCM on inflammation and adhesion molecules in chronic kidney disease (CKD).

Role of oxidative stress in cardiovascular effects of anemia treatment with erythropoietin in predialysis patients with chronic kidney disease.

Background/aim: Oxidative stress (OS) is involved in left ventricular hypertrophy (LVH). Short-term treatment with erythropoietin (EPO) in chronic kidney disease (CKD) complicated by anemia and LVH is associated with a reduction in left ventricular mass (LVM). We proposed to assess whether the pro-oxidant status of CKD influences these outcomes.

Evaluation of oxidative stress biomarkers in patients with chronic renal failure: a case control study.

Background: Oxidative stress is related to several diseases, including chronic renal insufficiency. The disequilibrium in the oxidant-antioxidant balance is the result of several metabolic changes. The majority of studies to-date have evaluated the grade of oxidative stress with a single biomarker, or a very limited number of them.

Cystatin C and cardiac hypertrophy in primary hypertension.

Introduction: Cystatin C is a marker of kidney function and a predictor of cardiovascular morbidity and mortality. It is unknown whether this protein may be related to the cardiac involvement that is common among patients with essential hypertension.

Patients And Methods: We evaluated the relationship between serum cystatin C, serum creatinine, estimated glomerular filtration rate and cardiac structure assessed by echocardiography, in a group of 49 non-diabetic patients with primary hypertension and normal serum creatinine.

[Chronic kidney disease and the heart. Linked pathologies].

There is a close relationship between chronic kidney disease and cardiovascular disorders. The observed increase in morbidity and mortality is due, to a certain extent, to the association of traditional cardiovascular risk factors with the progressive decline in renal function. However, prognosis is made even worse by the presence of additional non-traditional risk factors, in particular the development of left ventricular hypertrophy.

Silent cerebral white matter lesions and their relationship with vascular risk factors in middle-aged predialysis patients with CKD.

Background: Silent cerebral white matter lesions are observed on magnetic resonance imaging (MRI) scans in elderly people, and they are related to vascular risk factors, particularly hypertension. No data on the prevalence and risk factors of white matter lesions in patients with chronic kidney disease (CKD) are available. The aim is to analyze the prevalence of white matter lesions and their determinants in this population.

Exercise blood pressure, cardiac structure, and diastolic function in young normotensive patients with polycystic kidney disease: a prehypertensive state.

Background: Increased left ventricular mass (LVM) and left ventricular hypertrophy have been found in early stages of autosomal dominant polycystic kidney disease (ADPKD). The mechanisms that lead to an increase in LVM in this population are unknown. The aim of this study is to evaluate blood pressure (BP) response to exercise and very early alterations in cardiac structure and diastolic function in young normotensive patients with ADPKD.