Long-term visit-to-visit office blood pressure variability increases the risk of adverse cardiovascular outcomes in patients with chronic kidney disease.

Long-term visit-to-visit blood pressure (BP) variability predicts a high risk for cardiovascular events in patients with essential hypertension. Whether long-term visit-to-visit BP variability holds the same predictive power in predialysis patients with chronic kidney disease (CKD) is unknown. Here we tested the relationship between long-term visit-to-visit office BP variability and a composite end point (death and incident cardiovascular events) in a cohort of 1618 patients with stage 2-5 CKD.

Asymptomatic pulmonary congestion and physical functioning in hemodialysis patients.

Background And Objectives: Poor physical performance is common in patients with kidney failure on dialysis (CKD-5D). Whether lung congestion, a predictable consequence of cardiomyopathy and fluid overload, may contribute to the low physical performance of CKD-5D patients has not been investigated in hemodialysis patients.

Design, Setting, Participants, & Measurements: This study investigated the relationship between the physical functioning scale of the Kidney Disease Quality of Life Short Form and a validated ultrasonographic measure of lung water in a multicenter survey of 270 hemodialysis patients studied between 2009 and 2010.

The fat-mass and obesity-associated gene (FTO) predicts mortality in chronic kidney disease of various severity.

Background: Polymorphisms in the FTO (fat-mass and obesity-associated) gene have been associated with the body mass index, cancer, type 2 diabetes and hypertension.

Methods: We investigated the relationship between 17 tag single-nucleotide polymorphisms (SNPs) and all-cause mortality in three cohorts of dialysis patients (CREED-1, North Apulian and CREED-2 cohorts; n = 783) and in one cohort of stage 2-5 CKD patients (n = 757).

Results: We first explored the association between the 17 tag SNPs and all-cause mortality in the CREED-1 cohort and found that patients with the A allele of the FTO rs708259 polymorphism had an elevated risk of mortality (hazard ratio, HR: 1.

The MAURO study: baseline characteristics and compliance with guidelines targets.

Background: The Multiple Intervention and Audit in Renal Diseases to Optimize Care (MAURO) study was a cluster randomized controlled trial in 22 renal clinics which aimed to assess the efficacy of a multimodal quality improvement intervention to increase compliance with guideline recommendations for prevention of chronic kidney disease (CKD) progression and cardiovascular (CV) complications. The trial aimed to test whether this multimodal intervention improved adherence to recommended targets for a series of surrogate indicators relevant to blood pressure (BP) control, sodium intake, proteinuria, dyslipidemia, anemia and calcium-phosphate alterations. The trial also tested whether the same intervention slowed CKD progression and prevented CV complications in CKD patients.

Heart rate, age and the risk of progression to kidney failure in patients with CKD.

Background And Methods: Since heart rate (HR) is a cardiovascular risk factor and a marker of sympathetic activity, we tested the predictive value of HR for progression to kidney failure in a well characterized cohort of 759 patients with stage 2-5 CKD followed up for 29 ± 11 months.

Results: Overall, a total of 244 patients had renal events. In an unadjusted analysis by age tertiles the predictive value of HR for renal events was apparent only in patients in the third age tertile (older than 68 years) but not in those in the first two tertiles indicating effect modification by age of the HR--progression to kidney failure relationship.

Pro-inflammatory cytokines and bone fractures in CKD patients. An exploratory single centre study.

Background: Pro-inflammatory cytokines play a key role in bone remodeling. Inflammation is highly prevalent in CKD-5D patients, but the relationship between pro-inflammatory cytokines and fractures in CKD-5D patients is unclear. We studied the relationship between inflammatory cytokines and incident bone fractures in a cohort of CKD-5D patients.

Pulmonary congestion and physical functioning in peritoneal dialysis patients.

Purpose: Decline in physical function is commonly observed in patients with kidney failure on dialysis. Whether lung congestion, a predictable consequence of cardiomyopathy and fluid overload, may contribute to the low physical functioning of these patients has not been investigated.

Methods: In 51 peritoneal dialysis (PD) patients, we investigated the cross-sectional association between the physical functioning scale of the Kidney Disease Quality of Life Short Form (KDQOL-SF: Rand Corporation, Santa Monica, CA, USA) and an ultrasonographic measure of lung water recently validated in dialysis patients.

Chest ultrasound and hidden lung congestion in peritoneal dialysis patients.

Background: Chest ultrasound (US) is a non-invasive well-validated technique for estimating extravascular lung water (LW) in patients with heart diseases and in end-stage renal disease. We systematically applied this technique to the whole peritoneal dialysis (PD) population of five dialysis units.

Methods: We studied the cross-sectional association between LW, echocardiographic parameters, clinical [pedal oedema, New York Heart Association (NYHA) class] and bioelectrical impedance analysis (BIA) markers of volume status in 88 PD patients.

Visceral leishmaniasis reactivation in transplant patients: a minireview with report of a new case.

An updated review of cases of reactivated visceral leishmaniasis (VL) in transplant patients is presented, with a new report of a kidney transplant patient who had VL caused by reactivation of a dormant infection contracted 21 years previously. Close to the time of disease reactivation, the patient had a primary varicella-zoster infection.

Ranolazine can markedly increase tacrolimus blood levels.

We report the case of a renal transplant patient on tacrolimus who developed a fully reversible renal failure and a doubling in serum tacrolimus closely associated with initiation of ranolazine (Ranexa) treatment, a new anti-angina drug recently introduced in Europe.

Severe hyponatraemia during sepsis and marijuana addiction.

The authors report a 29-year-old kidney transplant patient who presented, four episodes of severe hyponatraemia associated with sepsis from 2006 to 2010. He was a long-term user of marijuana. The association between severe recurrent hyponatraemia during sepsis and marijuana addiction might not be casual, since experimental data show that vasopressin release induced by sepsis is modulated by the endocannabinoid system.

Hypokalaemia with paralysis: don't forget the thyroid.

The authors report the case of a 33-year-old Italian man who had three episodes of hypokalaemia with paralysis linked to hyperthyroidism. Because of its low prevalence in western populations, the diagnosis of thyrotoxic hypokalaemic periodic paralysis can be easily missed in non-Asian countries.

Asymmetric dimethyl-arginine (ADMA) response to inflammation in acute infections.

Background And Methods: The endogenous inhibitor of nitric oxide synthase (NOs) asymmetrical dimethyl-arginine (ADMA) has been implicated as a possible modulator of inducible NOs during acute inflammation. We examined the evolution in the plasma concentration of ADMA measured at the clinical outset of acute inflammation and after its resolution in a series of 17 patients with acute bacterial infections.

Results: During the acute phase of inflammation/infection, patients displayed very high levels of C-reactive protein (CRP), interleukin-6 (IL-6), procalcitonin and nitrotyrosine.

Subclinical hypothyroidism is linked to micro-inflammation and predicts death in continuous ambulatory peritoneal dialysis.

Background: Low T3 is a frequent alteration in patients with ESRD. This derangement has been recently linked to inflammation in haemodialysis patients. Whether this association holds true in peritoneal dialysis patients has not been studied.

Fibrinogen and calcium x phosphate product are predictors of cardiovascular events in the CAPD population.

Objective: Plasma fibrinogen (Fib) and calcium x phosphate product have emerged as cardiovascular (CV) event predictors in hemodialysis (HD) patients, but their role in peritoneal dialysis (PD) is less studied.

Design And Subjects: We investigated whether Fib and calcium x phosphate product predict CV events in a prospective cohort study of 47 continuous ambulatory PD (CAPD) patients (mean follow-up 34.6 months).

Clinical epidemiology of major nontraditional risk factors in peritoneal dialysis patients.

Background: End-stage renal disease (ESRD) is a situation with a cardiovascular (CV) risk profile of almost unique severity. While traditional risk factors dominate the scene in the general population, in chronic kidney disease (CKD), nontraditional risk factors play an increasingly important role, being perhaps dominant in ESRD patients.

Objective: We review the role inflammation [C-reactive protein (CRP)], hyperhomocysteinemia, high plasma norepinephrine, and accumulation of the endogenous inhibitor of the nitric oxide synthase asymmetric dimethylarginine (ADMA) in the high all-cause and CV mortality of patients on continuous ambulatory peritoneal dialysis (CAPD).

Adipose tissue cytokines, insulin sensitivity, inflammation, and cardiovascular outcomes in end-stage renal disease patients.

From an evolutionary perspective, Darwinian selection has favored insulin-resistant individuals, ie, those with a trait ensuring brain functioning in situations of extreme fuel deprivation. The ability to mount a powerful inflammatory response to infection was another survival advantage in our ancestors, and we now have solid evidence showing that these 2 traits, insulin resistance and inflammation (as measured by serum C-reactive protein [CRP]), are associated in modern human beings. In an analysis of 192 nondiabetic hemodialysis patients, leptin and adiponectin were related in an opposite fashion with insulin sensitivity in end-stage renal disease (ESRD) and interacted in determining insulin resistance in these patients.