International Journal of Nephrology https://www.hindawi.com The latest articles from Hindawi © 2017 , Hindawi Limited . All rights reserved. Gum Arabic Reduces C-Reactive Protein in Chronic Kidney Disease Patients without Affecting Urea or Indoxyl Sulfate Levels Sun, 14 May 2017 06:55:31 +0000 http://www.hindawi.com/journals/ijn/2017/9501470/ Introduction. Gum Arabic (GA) is a complex polysaccharide with proven prebiotic properties and potentially beneficial systemic effects. Methods. We randomly allocated 36 chronic kidney disease (CKD) patients to receive 10, 20, or 40 grams daily of GA for four weeks and studied the systemic effects of this intervention. Results. Thirty participants completed the study with baseline glomerular filtration rate  mL/min/1.7 m2. In contrast to previous observations, we found no effect on serum urea or creatinine levels. GA supplementation was associated with a small but statistically significant drop in serum sodium level ( to  mmol/L, = 0.002) without affecting other electrolytes, urine volume, or indoxyl sulfate (IS) levels. GA supplementation was also associated with a significant drop in C-reactive protein (CRP) level ( to  ng/mL, = 0.02) even in patients who received only 10 g/day ( to  ng/mL, = 0.03). Conclusions. Supplementing the diet of CKD patients with 10–40 g/day of GA significantly reduced CRP level which could have a positive impact on these patients’ morbidity and mortality. This trial is registered with Saudi Clinical Trial Registry number 15011402. Sarra Elamin, Mariam J. Alkhawaja, Amina Y. Bukhamsin, Mohamed A. S. Idris, Muntasir M. Abdelrahman, Nasrulla K. Abutaleb, and Abdulrahman A. Housawi Copyright © 2017 Sarra Elamin et al. All rights reserved. R229Q Polymorphism of NPHS2 Gene in Group of Iraqi Children with Steroid-Resistant Nephrotic Syndrome Wed, 26 Apr 2017 00:00:00 +0000 http://www.hindawi.com/journals/ijn/2017/1407506/ Background. The polymorphism R229Q is one of the most commonly reported podocin sequence variations among steroid-resistant nephrotic syndromes (SRNS). Aim of the Study. We investigated the frequency and risk of this polymorphism among a group of Iraqi children with SRNS and steroid-sensitive nephrotic syndrome (SSNS). Patients and Methods. A prospective case control study which was conducted in Al-Imamein Al-Kadhimein Medical City, spanning the period from the 1st of April 2015 to 30th of November 2015. Study sample consisted of 54 children having NS, divided into 2 groups: patients group consisted of 27 children with SRNS, and control group involved 27 children with SSNS. Both were screened by real time polymerase chain reaction for R229Q in exon 5 of NPHS2 gene. Results. Molecular study showed R229Q polymorphism in 96.3% of SRNS and 100% of SSNS. There were no phenotypic or histologic characteristics of patients bearing homozygous R229Q polymorphism and the patients with heterozygous R229Q polymorphism. Conclusion. Polymorphism R229Q of NPHS2 gene is prevalent in Iraqi children with SRNS and SSNS. Further study needs to be done, for other exons and polymorphism of NPHS2 gene in those patients. Shatha Hussain Ali, Rasha Kasim Mohammed, Hussein Ali Saheb, and Ban A. Abdulmajeed Copyright © 2017 Shatha Hussain Ali et al. All rights reserved. Expression of uPAR in Urinary Podocytes of Patients with Fabry Disease Mon, 24 Apr 2017 00:00:00 +0000 http://www.hindawi.com/journals/ijn/2017/1287289/ Background. Despite enzyme replacement therapy, Fabry nephropathy still progresses. Podocyturia is an irreversible event that antedates proteinuria and leads to chronic renal failure. We evaluated a potential mechanism of podocyte detachment via the expression of the urokinase-type Plasminogen Activator Receptor (uPAR) in urinary podocytes of Fabry patients. Methods. This is a cross-sectional study that included controls () and Fabry patients () either untreated () or treated with agalsidase-β (). Variables. Variables are estimated glomerular filtration rate (eGFR), urinary protein : creatinine ratio, and urinary uPAR+ podocyte : creatinine ratio. uPAR mRNA expression in response to lyso-Gb3, a bioactive glycolipid accumulated in Fabry disease, was studied in cultured human podocytes. Results. Controls and Fabry patients had similar age, gender, and renal function. Urinary uPAR+ podocytes were higher in patients than in controls. Untreated patients were significantly younger; had more females, and presented lower urinary protein : creatinine ratios and significantly higher urinary uPAR+ podocytes than treated subjects. In treated patients, urinary uPAR+ podocytes correlated with urinary protein : creatinine ratio (; ). Lyso-Gb3 at concentrations found in the circulation of Fabry patients increased uPAR expression in cultured podocytes. Conclusions. Urinary podocytes expressing uPAR are increased in Fabry patients, especially in untreated patients. The potential contribution of uPAR expression to podocyte detachment merits further studies. Hernán Trimarchi, Romina Canzonieri, Amalia Schiel, Juan Politei, Cristian Costales-Collaguazo, Aníbal Stern, Matías Paulero, Tatiana Rengel, Lara Valiño-Rivas, Mariano Forrester, Fernando Lombi, Vanesa Pomeranz, Romina Iriarte, Alexis Muryan, Alberto Ortiz, María Dolores Sanchez-Niño, and Elsa Zotta Copyright © 2017 Hernán Trimarchi et al. All rights reserved. Febuxostat Attenuates Renal Damage besides Exerting Hypouricemic Effect in Streptozotocin-Induced Diabetic Rats Wed, 19 Apr 2017 00:00:00 +0000 http://www.hindawi.com/journals/ijn/2017/2739539/ Aim. In this study, we aimed to investigate the effects of febuxostat, a novel inhibitor of xanthine oxidase (XO), on renal damage in streptozotocin- (STZ-) induced diabetic rats. Methods. Diabetes was induced by the intraperitoneal injection of STZ in male Sprague-Dawley rats. Sham-injected rats served as controls. The control and diabetic rats were treated with and without febuxostat for 8 weeks, respectively. Fasting blood and 24-h urine samples were collected every 4 weeks. Rat livers were extracted for detecting gene expression, content, and bioactivity of XO. Results. Diabetic rats showed significantly increased serum uric acid (SUA), serum creatinine (SCr), and urea nitrogen (BUN) levels. Daily urinary albumin (UAE), uric acid (UUA), and creatinine (UCr) excretion were also significantly increased in these rats. In diabetic rats, at week 8, febuxostat decreased SUA by 18.9%, while UAA was increased by 52.0%. However, UCr and urinary urea nitrogen (UUN) levels remained unchanged, while SCr and BUN levels decreased by >30% in these rats. Although hepatic gene expression, content, and activity of XO increased significantly in diabetic rats, febuxostat only slightly decreased its content. Conclusions. Febuxostat significantly attenuated renal damage in STZ-induced diabetic rats in addition to exerting hypouricemic effect. Jianmin Ran, Gang Xu, Huixuan Ma, Hailing Xu, Yan Liu, Rongshao Tan, Ping Zhu, Jun Song, and Gancheng Lao Copyright © 2017 Jianmin Ran et al. All rights reserved. Incidence and Risk Factors for Early Acute Kidney Injury in Nonsurgical Patients: A Cohort Study Tue, 11 Apr 2017 00:00:00 +0000 http://www.hindawi.com/journals/ijn/2017/5241482/ Introduction. Detecting acute kidney injury (AKI) in the first days of hospitalization could prevent potentially fatal complications. However, epidemiological data are scarce, especially on nonsurgical patients. Objectives. To determine the incidence and risk factors associated with AKI within five days of hospitalization (EAKI). Methods. Prospective cohort of patients hospitalized in the Internal Medicine Department. Results. A total of 16% of 400 patients developed EAKI. The associated risk factors were prehospital treatment with nephrotoxic drugs (2.21 OR; 95% CI 1.12–4.36, ), chronic kidney disease (CKD) in stages 3 to 5 (3.56 OR; 95% CI 1.55–8.18, ), and venous thromboembolism (VTE) at admission (5.05 OR; 95% CI 1.59–16.0, ). The median length of hospital stay was higher among patients who developed EAKI (8 [IQR 5–14] versus 6 [IQR 4–10], ) and was associated with an increased requirement for dialysis (4.87 OR 95% CI 2.54 to 8.97, ) and in-hospital death (3.45 OR; 95% CI 2.18 to 5.48, ). Conclusions. The incidence of EAKI in nonsurgical patients is similar to the worldwide incidence of AKI. The risk factors included CKD from stage 3 onwards, prehospital treatment with nephrotoxic drugs, and VTE at admission. EAKI is associated with prolonged hospital stay, increased mortality rate, and dialysis requirement. Javier Enrique Cely, Elkin José Mendoza, Carlos Roberto Olivares, Oscar Julián Sepúlveda, Juan Sebastián Acosta, Rafael Andrés Barón, and Juan José Diaztagle Copyright © 2017 Javier Enrique Cely et al. All rights reserved. Renal Function and Death in Older Women: Which eGFR Formula Should We Use? Wed, 29 Mar 2017 00:00:00 +0000 http://www.hindawi.com/journals/ijn/2017/8216878/ Background. The Berlin Initiative Study (BIS) eGFR equations were developed specifically for aged populations, but their predictive validity compared to standard formulae is unknown in older women. Methods. In a prospective study of 1289 community-dwelling older women (mean age 79.5 years), we compared the performance of the BIS1 SCr-based equation to the CKD- and the BIS2 SCr- and Scysc-based equation to the CKD- to predict cardiovascular and all-cause mortality. Results. Prevalence of specific eGFR category (i.e., ≥75, 60–74, 45–59, and <45) according to eGFR equation was 12.3%, 38.4%, 37.3%, and 12.0% for BIS1; 48.3%, 27.8%, 16.2%, and 7.8% for CKD-; 14.1%, 38.6%, 37.6%, and 9.6% for BIS2; and 33.5%, 33.4%, 22.0%, and 11.1% for CKD-, respectively. Over years, 667 (51.8%) women died. For each equation, women with eGFR <45 were at increased risk of mortality compared to eGFR ≥75 [adjusted HR (95% CI): BIS1, 1.5 (1.1–2.0); CKD-, 1.7 (1.3–2.2); BIS2, 2.0 (1.4–2.8); CKD-, 1.8 (1.4–2.3); p-trend <0.01]. Net reclassification analyses found no material difference in discriminant ability between the BIS and CKD-EPI equations. Results were similar for cardiovascular death. Conclusions. Compared to CKD-EPI, BIS equations identified a greater proportion of older women as having CKD but performed similarly to predict mortality risk. Thus, the BIS equations should not replace CKD-EPI equations to predict risk of death in older women. Muna T. Canales, Terri Blackwell, Areef Ishani, Brent C. Taylor, Allyson Hart, Rebecca J. Beyth, and Kristine E. Ensrud Copyright © 2017 Muna T. Canales et al. All rights reserved. Factors Predicting Renal Function Outcome after Augmentation Cystoplasty Mon, 06 Mar 2017 09:20:01 +0000 http://www.hindawi.com/journals/ijn/2017/3929352/ We determined the cause of renal deterioration after augmentation cystoplasty (AC). Twenty-nine adult patients with refractory bladder dysfunction and who underwent ileocystoplasty from 2004 to 2015 were studied. Patients with a decline in glomerular filtration rate (GFR) after augmentation were reviewed. The primary outcome was to determine the factors that might lead to deterioration of estimated GFR. Median follow-up was years. Significant bladder capacity, end filling pressure, and bladder compliance were achieved from median to  ml (), to  cm H2O (), and to (), respectively. Renal function remained stable and improved in 22 () patients from median eGFR to  ml/min/1.73 m2 (). Significant deterioration was found in 7 () patients from median eGFR to (). The causes of renal deterioration were noncompliance to self-catheterization (2 patients), posterior urethral valve/dysplastic kidneys (2 patients), and reflux/infection (2 patients). On multivariate analysis, recurrent pyelonephritis (OR 3.87, ) and noncompliance (OR 30.78, ) were significant. We concluded that AC is not the cause of progression to end-stage renal disease in patients with renal insufficiency. Shahbaz Mehmood, Raouf Seyam, Sadia Firdous, and Waleed Mohammad Altaweel Copyright © 2017 Shahbaz Mehmood et al. All rights reserved. Forecasting the Incidence and Prevalence of Patients with End-Stage Renal Disease in Malaysia up to the Year 2040 Tue, 28 Feb 2017 07:12:21 +0000 http://www.hindawi.com/journals/ijn/2017/2735296/ Background. The incidence of patients with end-stage renal disease (ESRD) requiring dialysis has been growing rapidly in Malaysia from 18 per million population (pmp) in 1993 to 231 pmp in 2013. Objective. To forecast the incidence and prevalence of ESRD patients who will require dialysis treatment in Malaysia until 2040. Methodology. Univariate forecasting models using the number of new and current dialysis patients, by the Malaysian Dialysis and Transplant Registry from 1993 to 2013 were used. Four forecasting models were evaluated, and the model with the smallest error was selected for the prediction. Result. ARIMA (0, 2, 1) modeling with the lowest error was selected to predict both the incidence (RMSE = 135.50, MAPE = 2.85, and MAE = 87.71) and the prevalence (RMSE = 158.79, MAPE = 1.29, and MAE = 117.21) of dialysis patients. The estimated incidences of new dialysis patients in 2020 and 2040 are 10,208 and 19,418 cases, respectively, while the estimated prevalence is 51,269 and 106,249 cases. Conclusion. The growth of ESRD patients on dialysis in Malaysia can be expected to continue at an alarming rate. Effective steps to address and curb further increase in new patients requiring dialysis are urgently needed, in order to mitigate the expected financial and health catastrophes associated with the projected increase of such patients. Mohamad Adam Bujang, Tassha Hilda Adnan, Nadiah Hanis Hashim, Kirubashni Mohan, Ang Kim Liong, Ghazali Ahmad, Goh Bak Leong, Sunita Bavanandan, and Jamaiyah Haniff Copyright © 2017 Mohamad Adam Bujang et al. All rights reserved. Childhood Nephrotic Syndrome Management and Outcome: A Single Center Retrospective Analysis Thu, 23 Feb 2017 07:13:15 +0000 http://www.hindawi.com/journals/ijn/2017/2029583/ There is a paucity of information on outpatient management and risk factors for hospitalization and complications in childhood nephrotic syndrome (NS). We described the management, patient adherence, and inpatient and outpatient usage of 87 pediatric NS patients diagnosed between 2006 and 2012 in the Atlanta Metropolitan Statistical Area. Multivariable analyses were performed to examine the associations between patient characteristics and disease outcome. We found that 51% of the patients were treated with two or more immunosuppressants. Approximately half of the patients were noted to be nonadherent to medications and urine protein monitoring. The majority (71%) of patients were hospitalized at least once, with a median rate of 0.5 hospitalizations per patient year. Mean hospital length of stay was 4.0 (3.8) days. Fourteen percent of patients experienced at least one serious disease complication. Black race, frequently relapsing/steroid-dependent and steroid-resistant disease, and the first year following diagnosis were associated with higher hospitalization rates. The presence of comorbidities was associated with longer hospital length of stay and increased risk of serious disease complications. Our results highlight the high morbidity and burden of NS and point to particular patient subgroups that may be at increased risk for poor outcome. Chia-shi Wang, Jia Yan, Robert Palmer, James Bost, Mattie Feasel Wolf, and Larry A. Greenbaum Copyright © 2017 Chia-shi Wang et al. All rights reserved. Focused Real-Time Ultrasonography for Nephrologists Thu, 02 Feb 2017 00:00:00 +0000 http://www.hindawi.com/journals/ijn/2017/3756857/ We propose that renal consults are enhanced by incorporating a nephrology-focused ultrasound protocol including ultrasound evaluation of cardiac contractility, the presence or absence of pericardial effusion, inferior vena cava size and collapsibility to guide volume management, bladder volume to assess for obstruction or retention, and kidney size and structure to potentially gauge chronicity of renal disease or identify other structural abnormalities. The benefits of immediate and ongoing assessment of cardiac function and intravascular volume status (prerenal), possible urinary obstruction or retention (postrenal), and potential etiologies of acute kidney injury or chronic kidney disease far outweigh the limitations of bedside ultrasonography performed by nephrologists. The alternative is reliance on formal ultrasonography, which creates a disconnect between those who order, perform, and interpret studies, creates delays between when clinical questions are asked and answered, and may increase expense. Ultrasound-enhanced physical examination provides immediate information about our patients, which frequently alters our assessments and management plans. Matthew J. Kaptein and Elaine M. Kaptein Copyright © 2017 Matthew J. Kaptein and Elaine M. Kaptein. All rights reserved. Apolipoprotein C-I Levels Are Associated with the Urinary Protein/Urinary Creatinine Ratio in Pediatric Idiopathic Steroid-Sensitive Nephrotic Syndrome: A Case Control Study Mon, 30 Jan 2017 11:01:49 +0000 http://www.hindawi.com/journals/ijn/2017/6392843/ Humoral factors may cause idiopathic steroid-sensitive nephrotic syndrome (ISSNS). In the present study, we analyzed serum proteins using mass spectrometry (MS) to identify proteins associated with the pathophysiology of pediatric ISSNS. We collected serial serum samples from 33 children during each ISSNS phase; Phase A1 is the acute phase prior to steroid treatment (STx), Phase A2 represents the remission period with STx, and Phase A3 represents the remission period after completion of STx. Children with normal urinalyses (Group B) and children with a nephrotic syndrome other than ISSNS (Group C) served as controls. No significant differences in urinary protein/urinary creatinine (UP/UCr) ratios were observed between the children with phase A1 ISSNS and Group C. We used surface-enhanced laser desorption/ionization time of flight MS for sample analysis. Four ion peaks with a mass-to-charge ratio (m/z) of 6,444, 6,626, 8,695, and 8,915 were significantly elevated during ISSNS Phase A1 compared to Phase A2, Phase A3, and Group C. The intensity of an m/z of 6,626 significantly correlated with the UP/UCr ratio and an m/z of 6,626 was identified as apolipoprotein C-I (Apo C-I). Apo C-I levels correlate with the UP/UCr ratio in pediatric ISSNS. Our findings provide new insights into the pathophysiology of ISSNS. Jun Odaka, Takahiro Kanai, Takane Ito, Takashi Saito, Jun Aoyagi, Hiroyuki Betsui, and Takanori Yamagata Copyright © 2017 Jun Odaka et al. All rights reserved. Clinical Utility of Urinary β2-Microglobulin in Detection of Early Nephropathy in African Diabetes Mellitus Patients Mon, 30 Jan 2017 07:35:19 +0000 http://www.hindawi.com/journals/ijn/2017/4093171/ Background. Studies have indicated that diabetic tubulopathy may occur earlier than glomerulopathy, therefore providing a potential avenue for earlier diagnosis of diabetic nephropathy. Urinary beta-2-microglobulin (β2m) was investigated in this study as a potential biomarker in the detection of early nephropathy in type 2 diabetics. Methods. One hundred and two diabetic subjects and 103 controls that met the inclusion criteria had data (sociodemographic, medical history, physical examination, and laboratory) collected. Urinary β2m levels and urinary albumin concentration (UAC) were determined. Results. Elevated urinary β2m was more frequent among the diabetics (52%, 95% CI: 42.1–61.8%) than among the controls (32%, 95% CI: 22.9–41.2%). The frequency of microalbuminuria was higher in the diabetics (35.3%, 95% CI: 25.9–44.7%) than in the controls (15.5%, 95% CI: 8.4–22.6%). There was a positive correlation between urinary β2m and UAC (rho = 0.38, ). Multivariate analysis showed BMI (OR: 1.23, 95% CI: 1.05–1.45), eGFR (OR: 0.97, 95% CI: 0.94–0.99), and presence of microalbuminuria (OR: 3.94, 95% CI: 1.32–11.77) as independent predictors of elevated urinary beta-2-microglobulin among the diabetics. Conclusion. Urinary β2m may be useful, either as a single test or as a component of a panel of tests, in the early detection of diabetic nephropathy. U. E. Ekrikpo, E. E. Effa, E. E. Akpan, A. S. Obot, and S. Kadiri Copyright © 2017 U. E. Ekrikpo et al. All rights reserved. Assessing the Association between Serum Ferritin, Transferrin Saturation, and C-Reactive Protein in Northern Territory Indigenous Australian Patients with High Serum Ferritin on Maintenance Haemodialysis Tue, 24 Jan 2017 00:00:00 +0000 http://www.hindawi.com/journals/ijn/2017/5490963/ Objective. To determine the significance of high serum ferritin observed in Indigenous Australian patients on maintenance haemodialysis in the Northern Territory, we assessed the relationship between ferritin and transferrin saturation (TSAT) as measures of iron status and ferritin and C-reactive protein (CRP) as markers of inflammation. Methods. We performed a retrospective cohort analysis of data from adult patients (≥18 years) on maintenance haemodialysis (>3 months) from 2004 to 2011. Results. There were 1568 patients. The mean age was 53.9 (11.9) years. 1244 (79.3%) were Indigenous. 44.2% () were male. Indigenous patients were younger (mean age [52.3 (11.1) versus 57.4 (15.2), ]) and had higher CRP [14.7 mg/l (7–35) versus 5.9 mg/l (1.9–17.5), ], higher median serum ferritin [1069 µg/l (668–1522) versus 794.9 µg/l (558.5–1252.0), ], but similar transferrin saturation [26% (19–37) versus 28% (20–38), ]. We observed a small positive correlation between ferritin and TSAT (, ), no correlation between ferritin and CRP ( = 0.001, ), and positive association between high serum ferritin and TSAT (), Indigenous ethnicity (), urea reduction ratio (), and gender () after adjustment in mixed regression analysis. Conclusion. Serum ferritin and TSAT may inadequately reflect iron status in this population. The high ferritin was poorly explained by inflammation. Sandawana William Majoni, Paul D. Lawton, Federica Barzi, Alan Cass, and Jaquelyne T. Hughes Copyright © 2017 Sandawana William Majoni et al. All rights reserved. High Serum Alkaline Phosphatase, Hypercalcaemia, Race, and Mortality in South African Maintenance Haemodialysis Patients Thu, 12 Jan 2017 09:24:31 +0000 http://www.hindawi.com/journals/ijn/2017/2795432/ Objective. To determine the association between serum total alkaline phosphatase (TAP) and mortality in African maintenance haemodialysis patients (MHD). Patients and Methods. The study enrolled a total of 213 patients on MHD from two dialysis centers in Johannesburg between January 2009 and March 2016. Patients were categorized into a low TAP group (≤112 U/L) versus a high TAP group (>112 U/L) based on a median TAP of 112 U/L. Results. During the follow-up period of 7 years, there were 55 (25.8%) deaths. After adjusting for cofounders such as age, other markers of bone disorder, and comorbidity (diabetes mellitus), patients in the high TAP group had significantly higher risk of death compared to patients in the low TAP group (hazard ratio, 2.50; 95% CI 1.24–5.01, P = 0.01). Similarly, serum calcium >2.75 mmol/L was associated with increased risk of death compared to patients within levels of 2.10–2.37 mmol/L (HR 6.34, 95% CI 1.40–28.76; P = 0.02). The HR for death in white patients compared to black patients was 6.88; 95% CI 1.82–25.88; P = 0.004. Conclusion. High levels of serum alkaline phosphatase, hypercalcaemia, and white race are associated with increased risk of death in MHD patients. Bala Waziri, Raquel Duarte, and Saraladevi Naicker Copyright © 2017 Bala Waziri et al. All rights reserved. Serum Endocan Levels Associated with Hypertension and Loss of Renal Function in Pediatric Patients after Two Years from Renal Transplant Mon, 19 Dec 2016 11:34:16 +0000 http://www.hindawi.com/journals/ijn/2016/2180765/ Endocan is an important biomarker of inflammation and endothelial dysfunction that increases in association with several chronic diseases. Few published data have described the role of endocan in pediatric renal transplant (RT) patients. We evaluated the endocan concentrations in 62 children who underwent renal transplantation and assessed their relationships with the patients’ blood pressure and loss of renal function. The endocan levels were significantly elevated in the pediatric RT patients who had hypertension and a loss of renal function. We determined positive correlations between the endocan concentrations and the hemodynamic variables (systolic blood pressure: ; ; pulse pressure: ; ). The endocan levels were inversely correlated with the estimated glomerular filtration rate (; ). An endocan cutoff concentration of 7.0 ng/mL identified pediatric RT patients who had hypertension and a loss of renal function with 100% sensitivity and 75% specificity. In conclusion, the endocan concentrations were significantly elevated in pediatric RT patients who had both hypertension and a loss of renal function. The correlations between the endocan levels and the hemodynamic variables and the markers of renal function strengthen the hypothesis that it is an important marker of cardiorenal risk. Livia Victorino de Souza, Vanessa Oliveira, Aline Oliveira Laurindo, DelmaRegına Gomes Huarachı, Paulo Cesar Koch Nogueira, Luciana de Santis Feltran, José Osmar Medina-Pestana, and Maria do Carmo Franco Copyright © 2016 Livia Victorino de Souza et al. All rights reserved. The Role of Renal Replacement Therapy in the Management of Pharmacologic Poisonings Wed, 30 Nov 2016 12:21:14 +0000 http://www.hindawi.com/journals/ijn/2016/3047329/ Pharmacologic toxicities are common and range from mild to life-threatening. The aim of this study is to review and update the data on the role of renal replacement therapy (RRT) in the management of various pharmacologic poisonings. We aim to provide a focused review on the role of RRT in the management of pharmacological toxicities. Relevant publications were searched in MEDLINE with the following search terms alone or in combination: pharmacologic toxicity, hemodialysis, hemofiltration, renal replacement therapy, toxicology, poisonings, critical illness, and intensive care. The studies showed that a pharmacologic substance should meet several prerequisites to be deemed dialyzable. These variables include having a low molecular weight (<500 Da) and low degree of protein binding (<80%), being water-soluble, and having a low volume of distribution (<1 L/kg). RRT should be strongly considered in critically ill patients presenting with toxic alcohol ingestion, salicylate overdose, severe valproic acid toxicity, metformin overdose, and lithium poisoning. The role of RRT in other pharmacologic toxicities is less certain and should be considered on a case-by-case basis. Aibek E. Mirrakhimov, Aram Barbaryan, Adam Gray, and Taha Ayach Copyright © 2016 Aibek E. Mirrakhimov et al. All rights reserved. Overview of Pregnancy in Renal Transplant Patients Wed, 30 Nov 2016 12:16:39 +0000 http://www.hindawi.com/journals/ijn/2016/4539342/ Kidney transplantation offers best hope to women with end-stage renal disease who wish to become pregnant. Pregnancy in a kidney transplant recipient continues to remain challenging due to side effects of immunosuppressive medication, risk of deterioration of allograft function, risk of adverse maternal complications of preeclampsia and hypertension, and risk of adverse fetal outcomes of premature birth, low birth weight, and small for gestational age infants. The factors associated with poor pregnancy outcomes include presence of hypertension, serum creatinine greater than 1.4 mg/dL, and proteinuria. The recommended maintenance immunosuppression in pregnant women is calcineurin inhibitors (tacrolimus/cyclosporine), azathioprine, and low dose prednisone; and it is considered safe. Sirolimus and mycophenolate mofetil should be stopped 6 weeks prior to conception. The optimal time to conception continues to remain an area of contention. It is important that counseling for childbearing should start as early as prior to getting a kidney transplant and should be done at every clinic visit after transplant. Breast-feeding is not contraindicated and should not be discouraged. This review will help the physicians in medical optimization and counseling of renal transplant recipients of childbearing age. Silvi Shah and Prasoon Verma Copyright © 2016 Silvi Shah and Prasoon Verma. All rights reserved. Decreased Serum 25-hydroxyvitamin D Level Causes Interventricular Septal Hypertrophy in Patients on Peritoneal Dialysis: Cardiovascular Aspects of Endogenous Vitamin D Deficiency Sun, 27 Nov 2016 09:12:57 +0000 http://www.hindawi.com/journals/ijn/2016/2464953/ Introduction. In the present study, we aimed to analyze the relation of vitamin D with echocardiographic indexes in patients with end stage renal disease (ESRD) receiving renal replacement therapy (RRT). Methods. A total of 98 patients, 64 patients on hemodialysis (HD) (29F/35M, mean age 56.75 ± 18.63 years) and 34 age matched patients on peritoneal dialysis (PD) (21F/13M, mean age 58.11 ± 10.63 years), with similar duration of ESRD and RRT were enrolled into this cross-sectional study. Echocardiographic examination was performed after dialysis session at normovolemic status. Fasting blood samples were obtained before dialysis session. Results. Patients on PD and female patients in both groups had significantly lower level of 25-OH-D3 level when compared to patients on HD or male patients (p: 0.0001 and p: 0.0001). When all participants were considered, there was no significant association between 25-OH-D3 and echocardiographic parameters; however, in patients on PD, a significant negative correlation was determined between 25-OH-D3 and diastolic blood pressure, interventricular septal hypertrophy (ISH), and left ventricular mass index (LVMI) (r: −0.424, p: 0.012; r: −0.508, p: 0.004; r: 0.489, p: 0.04, resp.). Conclusion. Low serum 25-hydroxyvitamin D levels is associated with ISH and LVMI in PD patients. Bennur Esen, Irfan Sahin, Ahmet Engin Atay, Emel Saglam Gokmen, Ozlem Harmankaya Kaptanogullari, Mürvet Yılmaz, Suat Hayri Kucuk, Serdar Kahvecioglu, and Nurhan Seyahi Copyright © 2016 Bennur Esen et al. All rights reserved. Automated Fluid Management for Treatment of Rhabdomyolysis Thu, 24 Nov 2016 07:43:10 +0000 http://www.hindawi.com/journals/ijn/2016/2932593/ Purpose. Fluid therapy aimed at increasing urine output is a commonly employed strategy to prevent acute kidney injury (AKI) in critically ill patients with rhabdomyolysis. Automated fluid management has the potential to optimise urine output while avoiding fluid accumulation in rhabdomyolysis patients. Methods. In a single centre clinical service evaluation we compared a convenience sample of critically ill adults with rhabdomyolysis treated with automated fluid management using the RenalGuard® device to patients managed with manual fluid adjustment following our standard rhabdomyolysis protocol. Primary outcome was number of hours with urine output >2 mL/kg during first 48 h of therapy. Results. Eight patients treated with RenalGuard were compared to 28 patients treated with manual fluid management. Number of hours of target urine output was greater in the RenalGuard versus the Standard group (176/312 (56.4%) versus 534/1305 (40.9%); ). Urine output was significantly higher in the first 24 h in the RenalGuard group (median (IQR) 4033 mL (3682–7363) versus 2913 mL (2263–4188 mL); ). Fluid balance, electrolyte, diuretics, and bicarbonate use were comparable between groups. Conclusions. Automated fluid management resulted in a higher urine output more quickly in the treatment of rhabdomyolysis. Further research is needed to analyse the effect of diuresis-matched hydration for the prevention of AKI in rhabdomyolysis. Christian M. Beilstein, John R. Prowle, and Christopher J. Kirwan Copyright © 2016 Christian M. Beilstein et al. All rights reserved. Acute Kidney Injury in Diabetes Mellitus Tue, 15 Nov 2016 07:10:24 +0000 http://www.hindawi.com/journals/ijn/2016/6232909/ Diabetes mellitus (DM) significantly increases the overall morbidity and mortality, particularly by elevating the cardiovascular risk. The kidneys are severely affected as well, partly as a result of intrarenal athero- and arteriosclerosis but also due to noninflammatory glomerular damage (diabetic nephropathy). DM is the most frequent cause of end-stage renal disease in our society. Acute kidney injury (AKI) remains a clinical and prognostic problem of fundamental importance since incidences have been increased in recent years while mortality has not substantially been improved. As a matter of fact, not many studies particularly addressed the topic “AKI in diabetes mellitus.” Aim of this article is to summarize AKI epidemiology and outcomes in DM and current recommendations on blood glucose control in the intensive care unit with regard to the risk for acquiring AKI, and finally several aspects related to postischemic microvasculopathy in AKI of diabetic patients shall be discussed. We intend to deal with this relevant topic, last but not least with regard to increasing incidences and prevalences of both disorders, AKI and DM. D. Patschan and G. A. Müller Copyright © 2016 D. Patschan and G. A. Müller. All rights reserved. Characteristics of the Relationship of Kidney Dysfunction with Cardiovascular Disease in High Risk Patients with Diabetes Thu, 03 Nov 2016 13:30:47 +0000 http://www.hindawi.com/journals/ijn/2016/7180784/ We aimed at comparing the relationship of reduced estimated glomerular filtration rate (eGFR) with cardiovascular disease (CVD) and mortality between high risk patients with and without type 2 diabetes mellitus (T2DM). The cross-sectional study evaluated 16,298 participants (1,627 T2DM) acutely admitted to hospital. The longitudinal study comprised 7,508 patients (673 with diabetes and 6,835 without). eGFR was categorized into 6 stages from >90 to <15 mL/min/1.73 m2. Kidney dysfunction was defined by an eGFR < 60 mL/min/1.73 m2. Patients with T2D showed a higher prevalence of CVD (37.9% versus 23.6%; ) and kidney dysfunction (25% versus 13.2%; ) than in the general population. An association with CVD was found with eGFR stages from 30 to 90 mL/min/1.73 m2 in T2D and from <15 to 90 mL/min/1.73 m2 in general population, in whom the association of eGFR with coronary heart disease was in an inverse relationship ( for trend). Survival, in diabetes, was lower () but not associated with kidney dysfunction. Conclusions. In a high risk population, patients admitted to hospital, the relationship of kidney function with CVD is different between T2D and the general population. Competing mortality and the presence of other major risk factors in diabetes may be responsible for this difference. Attilio Losito, Loretta Pittavini, Ivano Zampi, and Elena Zampi Copyright © 2016 Attilio Losito et al. All rights reserved. Acute Kidney Injury in Hematopoietic Stem Cell Transplantation: A Review Thu, 03 Nov 2016 09:24:50 +0000 http://www.hindawi.com/journals/ijn/2016/5163789/ Hematopoietic stem cell transplantation (HSCT) is a highly effective treatment strategy for lymphoproliferative disorders and bone marrow failure states including aplastic anemia and thalassemia. However, its use has been limited by the increased treatment related complications, including acute kidney injury (AKI) with an incidence ranging from 20% to 73%. AKI after HSCT has been associated with an increased risk of mortality. The incidence of AKI reported in recipients of myeloablative allogeneic transplant is considerably higher in comparison to other subclasses mainly due to use of cyclosporine and development of graft-versus-host disease (GVHD) in allogeneic groups. Acute GVHD is by itself a major independent risk factor for the development of AKI in HSCT recipients. The other major risk factors are sepsis, nephrotoxic medications (amphotericin B, acyclovir, aminoglycosides, and cyclosporine), hepatic sinusoidal obstruction syndrome (SOS), thrombotic microangiopathy (TMA), marrow infusion toxicity, and tumor lysis syndrome. The mainstay of management of AKI in these patients is avoidance of risk factors contributing to AKI, including use of reduced intensity-conditioning regimen, close monitoring of nephrotoxic medications, and use of alternative antifungals for prophylaxis against infection. Also, early identification and effective management of sepsis, tumor lysis syndrome, marrow infusion toxicity, and hepatic SOS help in reducing the incidence of AKI in HSCT recipients. Vinod Krishnappa, Mohit Gupta, Gurusidda Manu, Shivani Kwatra, Osei-Tutu Owusu, and Rupesh Raina Copyright © 2016 Vinod Krishnappa et al. All rights reserved. Proteasome Activators, PA28α and PA28β, Govern Development of Microvascular Injury in Diabetic Nephropathy and Retinopathy Tue, 18 Oct 2016 14:55:23 +0000 http://www.hindawi.com/journals/ijn/2016/3846573/ Diabetic nephropathy (DN) and diabetic retinopathy (DR) are major complications of type 1 and type 2 diabetes. DN and DR are mainly caused by injury to the perivascular supporting cells, the mesangial cells within the glomerulus, and the pericytes in the retina. The genes and molecular mechanisms predisposing retinal and glomerular pericytes to diabetic injury are poorly characterized. In this study, the genetic deletion of proteasome activator genes, PA28α and PA28β genes, protected the diabetic mice in the experimental STZ-induced diabetes model against renal injury and retinal microvascular injury and prolonged their survival compared with wild type STZ diabetic mice. The improved wellbeing and reduced renal damage was associated with diminished expression of Osteopontin (OPN) and Monocyte Chemoattractant Protein-1 (MCP-1) in the glomeruli of STZ-injected PA28α/PA28β double knockout (Pa28αβDKO) mice and also in cultured mesangial cells and retinal pericytes isolated from Pa28αβDKO mice that were grown in high glucose. The mesangial PA28-mediated expression of OPN under high glucose conditions was suppressed by peptides capable of inhibiting the binding of PA28 to the 20S proteasome. Collectively, our findings demonstrate that diabetic hyperglycemia promotes PA28-mediated alteration of proteasome activity in vulnerable perivascular cells resulting in microvascular injury and development of DN and DR. Saeed Yadranji Aghdam and Ali Mahmoudpour Copyright © 2016 Saeed Yadranji Aghdam and Ali Mahmoudpour. All rights reserved. Psychosocial Factors in End-Stage Kidney Disease Patients at a Tertiary Hospital in Australia Tue, 11 Oct 2016 08:59:17 +0000 http://www.hindawi.com/journals/ijn/2016/2051586/ Aim. This study seeks to review the psychosocial factors affecting patients with end-stage kidney disease (ESKD) from a tertiary hospital in Australia. Methods. We audited patients with ESKD, referred to social work services from January 2012 to December 2014. All patients underwent psychosocial assessments by one, full-time renal social worker. Patient demographics, cumulative social issues, and subsequent interventions were recorded directly into a database. Results. Of the 244 patients referred, the majority were >60 years (58.6%), male (60.7%), born in Australia (62.3%), on haemodialysis (51.6%), and reliant on government financial assistance (88%). Adjustment issues (41%), financial concerns (38.5%), domestic assistance (35.2%), and treatment nonadherence (21.3%) were the predominant reasons for social work consultation. Younger age, referral prior to start of dialysis, and unemployment were significant independent predictors of increased risk of adjustment issues (, <0.001, and =0.018, resp.). Independent risk factors for treatment nonadherence included age and financial and employment status (, 0.052, and 0.008, resp.). Conclusion. Psychosocial and demographic factors were associated with treatment nonadherence and adjustment difficulties. Additional social work support and counselling, in addition to financial assistance from government and nongovernment agencies, may help to improve adjustment to the diagnosis and treatment plans as patients approach ESKD. Charan Bale, Alexandra Douglas, Dev Jegatheesan, Linh Pham, Sonny Huynh, Atul Mulay, and Dwarakanathan Ranganathan Copyright © 2016 Charan Bale et al. All rights reserved. Is Anticoagulation Discontinuation Achievable with Citrate Dialysate during HDF Sessions? Mon, 10 Oct 2016 10:49:10 +0000 http://www.hindawi.com/journals/ijn/2016/9185413/ Citrate dialysate has been developed for few years to replace acetate and HCl concentrates. In Online Postdilution Hemodiafiltration (OL-POST-HDF), several issues are remaining concerning the possibility of stopping anticoagulation during sessions and the side effects of citrate solutions on calcium metabolism. This 1-year monocentric retrospective study included all patients exposed to citrate in OL-POST-HDF with nadroparin decrease for more than one month. Clotting events, serum calcium, PTH, hemoglobin, CRP, depuration parameters, and treatments administrated were recorded for analysis. 27 patients experienced nadroparin decrease and 5 did not receive nadroparin at the end of the study. Nadroparin decrease and withdrawal were both associated with more clotting events whereas the use of vitamin K antagonists was protective. No significant metabolic side effects were observed. Citrate dialysate does not allow anticoagulation discontinuation or decrease but has no significant side effects on mineral bone metabolism or erythropoiesis. Thibault Dolley-Hitze, Emmanuel Oger, Didier Hamel, Marie-Laure Lombart, and Isabelle Hermès Copyright © 2016 Thibault Dolley-Hitze et al. All rights reserved. Dialysate White Blood Cell Change after Initial Antibiotic Treatment Represented the Patterns of Response in Peritoneal Dialysis-Related Peritonitis Tue, 30 Aug 2016 11:32:52 +0000 http://www.hindawi.com/journals/ijn/2016/6217135/ Background. Patients with peritoneal dialysis-related peritonitis usually have different responses to initial antibiotic treatment. This study aimed to explore the patterns of response by using the changes of dialysate white blood cell count on the first five days of the initial antibiotic treatment. Materials and Methods. A retrospective cohort study was conducted. All peritoneal dialysis-related peritonitis episodes from January 2014 to December 2015 were reviewed. We categorized the patterns of antibiotic response into 3 groups: early response, delayed response, and failure group. The changes of dialysate white blood cell count for each pattern were determined by multilevel regression analysis. Results. There were 644 episodes in 455 patients: 378 (58.7%) of early response, 122 (18.9%) of delayed response, and 144 (22.3%) of failure episodes. The patterns of early, delayed, and failure groups were represented by the average rate reduction per day of dialysate WBC of 68.4%, 34.0%, and 14.2%, respectively ( value < 0.001 for all comparisons). Conclusion. Three patterns, which were categorized by types of responses, have variable rates of WBC declining. Clinicians should focus on the delayed response and failure patterns in order to make a decision whether to continue medical therapies or to aggressively remove the peritoneal catheter. Pichaya Tantiyavarong, Opas Traitanon, Piyatida Chuengsaman, Jayanton Patumanond, and Adis Tasanarong Copyright © 2016 Pichaya Tantiyavarong et al. All rights reserved. Acute Kidney Injury and Atypical Features during Pediatric Poststreptococcal Glomerulonephritis Tue, 23 Aug 2016 14:22:36 +0000 http://www.hindawi.com/journals/ijn/2016/5163065/ The most common acute glomerulonephritis in children is poststreptococcal glomerulonephritis (PSGN) usually occurring between 3 and 12 years old. Hypertension and gross hematuria are common presenting symptoms. Most PSGN patients do not experience complications, but rapidly progressive glomerulonephritis and hypertensive encephalopathy have been reported. This paper reports 17 patients seen in 1 year for PSGN including 4 with atypical PSGN, at a pediatric tertiary care center. Seventeen children (11 males), mean age of 8 years, were analyzed. Ninety-four percent had elevated serum BUN levels and decreased GFR. Four of the hospitalized patients had complex presentations that included AKI along with positive ANA or ANCAs. Three patients required renal replacement therapy and two were thrombocytopenic. PSGN usually does not occur as a severe nephritis. Over the 12-month study period, 17 cases associated with low serum albumin in 53%, acute kidney injury in 94%, and thrombocytopenia in 18% were treated. The presentation of PSGN may be severe and in a small subset have associations similar to SLE nephritis findings including AKI, positive ANA, and hematological anomalies. Rose M. Ayoob and Andrew L. Schwaderer Copyright © 2016 Rose M. Ayoob and Andrew L. Schwaderer. All rights reserved. Impact of Pediatric Chronic Dialysis on Long-Term Patient Outcome: Single Center Study Mon, 15 Aug 2016 12:08:11 +0000 http://www.hindawi.com/journals/ijn/2016/2132387/ Objective. Owing to a shortage of kidney donors in Israel, children with end-stage renal disease (ESRD) may stay on maintenance dialysis for a considerable time, placing them at a significant risk. The aim of this study was to understand the causes of mortality. Study Design. Clinical data were collected retrospectively from the files of children on chronic dialysis (>3 months) during the years 1995–2013 at a single pediatric medical center. Results. 110 patients were enrolled in the study. Mean age was  yrs. (range: 1 month–24 yrs). Forty-five children (42) had dysplastic kidneys and 19 (17.5) had focal segmental glomerulosclerosis. Twenty-five (22.7) received peritoneal dialysis, 59 (53.6) hemodialysis, and 6 (23.6) both modalities sequentially. Median dialysis duration was 1.46 years (range: 0.25–17.54 years). Mean follow-up was  yrs. Seventy-nine patients (71.8) underwent successful transplantation, 10 (11.2) had graft failure, and 8 (7.3) continued dialysis without transplantation. Twelve patients (10.9) died: 8 of dialysis-associated complications and 4 of their primary illness. The 5-year survival rate was 84: 90 for patients older than 5 years and 61 for younger patients. Conclusions. Chronic dialysis is a suitable temporary option for children awaiting renal transplantation. Although overall long-term survival rate is high, very young children are at high risk for life-threatening dialysis-associated complications. Daniella Levy Erez, Irit Krause, Amit Dagan, Roxana Cleper, Yafa Falush, and Miriam Davidovits Copyright © 2016 Daniella Levy Erez et al. All rights reserved. Prevalence and Risk Factors of Lower Limb Amputation in Patients with End-Stage Renal Failure on Dialysis: A Systematic Review Wed, 27 Jul 2016 12:56:39 +0000 http://www.hindawi.com/journals/ijn/2016/4870749/ Background. Renal dialysis has recently been recognised as a risk factor for lower limb amputation (LLA). However, exact rates and associated risk factors for the LLA are incompletely understood. Aim. Prevalence and risk factors of LLA in end-stage renal failure (ESRF) subjects on renal dialysis were investigated from the existing literature. Methods. Published data on the subject were derived from MEDLINE, PubMed, and Google Scholar search of English language literature from January 1, 1980, to July 31, 2015, using designated key words. Results. Seventy studies were identified out of which 6 full-text published studies were included in this systematic review of which 5 included patients on haemodialysis alone and one included patients on both haemodialysis and peritoneal dialysis. The reported findings on prevalence of amputation in the renal failure on dialysis cohort ranged from 1.7% to 13.4%. Five out of the six studies identified diabetes as the leading risk factor for amputation in subjects with ESRF on renal dialysis. Other risk factors identified were high haemoglobin A1c, elevated c-reactive protein, and low serum albumin. Conclusions. This review demonstrates high rate of LLA in ESRF patients receiving dialysis therapy. It has also identified diabetes and markers of inflammation as risk factors of amputation in ESRF subjects on dialysis. Rajit A. Gilhotra, Beverly T. Rodrigues, Venkat N. Vangaveti, and Usman H. Malabu Copyright © 2016 Rajit A. Gilhotra et al. All rights reserved. Effects of Therapy on Urine Neutrophil Gelatinase-Associated Lipocalin in Nondiabetic Glomerular Diseases with Proteinuria Mon, 25 Jul 2016 10:17:17 +0000 http://www.hindawi.com/journals/ijn/2016/4904502/ Urine neutrophil gelatinase-associated lipocalin (NGAL) is widely used as a biomarker for acute kidney injury. Cross-sectional studies have shown that NGAL may be elevated in glomerular diseases, but there is limited information on the value of NGAL in predicting treatment response or on the changes of NGAL levels after therapy. We prospectively evaluated the effects of therapy on NGAL in nondiabetic glomerular diseases. Urine NGAL was collected at biopsy and follow-up at 12 months. At baseline, NGAL in glomerular disease patients () correlated with proteinuria, but not with glomerular filtration rate (GFR). After therapy with renin-angiotensin blockers and/or immune modulating agents, change of NGAL correlated with change of proteinuria, but not with change of GFR. NGAL at baseline was not different between patients in complete remission (CR) at follow-up compared to those not in remission (NR). Compared to baseline, NGAL at follow-up decreased in CR (), but not in NR. Change of NGAL was greater in CR than NR. In conclusion, the change of urine NGAL correlated with the change of proteinuria. Baseline NGAL was not a predictor of complete remission. Future studies will be necessary to determine the role of NGAL as a predictor of long term outcome in proteinuric glomerular diseases. Amnuay Sirisopha, Somlak Vanavanan, Anchalee Chittamma, Bunyong Phakdeekitcharoen, Ammarin Thakkinstian, Amornpan Lertrit, Nuankanya Sathirapongsasuti, and Chagriya Kitiyakara Copyright © 2016 Amnuay Sirisopha et al. All rights reserved.