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Kidney & Blood Pressure Research

Xiao Wei, Zongshi Lu, Tao Yang, Peng Gao, Sijiao Chen, Daoyan Liu, Zhiming Zhu
BACKGROUND/AIMS: High salt consumption is a major risk factor for hypertension, and sodium homeostasis is regulated by both intestinal sodium absorption and urinary sodium excretion. Chronic caffeine intake has been reported to attenuate salt-sensitive hypertension by promoting urinary sodium excretion; however, its exact role in intestinal sodium absorption remains unknown. Here, we investigated whether and how chronic caffeine consumption antagonizes salt-sensitive hypertension by inhibiting intestinal sodium absorption...
March 16, 2018: Kidney & Blood Pressure Research
María Del Pino, Amado Andrés, Ana Ávila Bernabéu, Joaquín de Juan-Rivera, Elvira Fernández, Juan de Dios García Díaz, Domingo Hernández, José Luño, Isabel Martínez Fernández, José Paniagua, Manuel Posada de la Paz, José Carlos Rodríguez-Pérez, Rafael Santamaría, Roser Torra, Joan Torras Ambros, Pedro Vidau, Josep-Vicent Torregrosa
Fabry disease (FD) is a rare, X-linked disorder caused by mutations in the GLA gene encoding the enzyme α-galactosidase A. Complete or partial deficiency in this enzyme leads to intracellular accumulation of globotriaosylceramide (Gb3) and other glycosphingolipids in many cell types throughout the body, including the kidney. Progressive accumulation of Gb3 in podocytes, endothelial cells, epithelial cells, and tubular cells contribute to the renal symptoms of FD, which manifest as proteinuria and reduced glomerular filtration rate leading to renal insufficiency...
March 16, 2018: Kidney & Blood Pressure Research
Yan Wu, Guangli Zhang, Niansong Wang, Qin Xue
BACKGROUND/AIMS: Renal involvement is one of the most common extra-articular complications caused by ankylosing spondylitis (AS). Most studies have focused on the incidence rate, clinical manifestation and pathology, while risk factors have hardly been investigated. Therefore, the objective of this study was to assess the risk factors of renal involvement in patients with AS. METHODS: Clinical and biochemical data of 926 AS patients were collected. Based on the manifestations of renal involvement, patients were divided into three groups and the differences in clinical and biochemical characteristics were compared...
March 8, 2018: Kidney & Blood Pressure Research
Marianna Caterino, Miriam Zacchia, Michele Costanzo, Giuliana Bruno, Davide Arcaniolo, Francesco Trepiccione, Rosa Anna Siciliano, Maria Fiorella Mazzeo, Margherita Ruoppolo, Giovambattista Capasso
BACKGROUND: /Aims: Renal disease is a common cause of morbidity in patients with Bardet-Biedl syndrome (BBS), however the severity of kidney dysfunction is highly variable. To date, there is little information on the pathogenesis, the risk and predictor factors for poor renal outcome in this setting. The present study aims to analyze the spectrum of urinary proteins in BBS patients, in order to potentially identify 1) disease-specific proteomic profiles that may differentiate the patients from normal subjects; 2) urinary markers of renal dysfunction...
March 8, 2018: Kidney & Blood Pressure Research
Marius Jacob, Kim Ohl, Tannaz Goodarzi, Sigrid Harendza, Thomas Eggermann, Christina Fitzner, Ralf-Dieter Hilgers, Anna Bolte, Jürgen Floege, Thomas Rauen, Klaus Tenbrock
BACKGROUND/AIMS: IgA nephropathy (IgAN) is the most common form of primary glomerulonephritis and still constitutes one of the most important causes of end-stage renal disease. Abnormal T cell responses may play a role in IgAN pathogenesis. Co-stimulatory molecules such as cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) are important for naive T cells to initiate and terminate immune responses. Single nucleotide polymorphisms (SNPs) in the CTLA4 gene locus are associated with several autoimmune diseases...
March 8, 2018: Kidney & Blood Pressure Research
Fen Chen, Shulin Li, Dong Sun
Blood oxygen level-dependent magnetic resonance imaging (BOLD MRI) has recently been utilized as a noninvasive tool for evaluating renal oxygenation. Several methods have been proposed for analyzing BOLD images. Regional ROI selection is the earliest and most widely used method for BOLD analysis. In the last 20 years, many investigators have used this method to evaluate cortical and medullary oxygenation in patients with ischemic nephropathy, hypertensive nephropathy, diabetic nephropathy, chronic kidney disease (CKD), acute kidney injury and renal allograft rejection...
March 8, 2018: Kidney & Blood Pressure Research
Petr Kosztyu, Martin Hill, Jana Jemelkova, Lydie Czernekova, Leona Raskova Kafkova, Miroslav Hruby, Karel Matousovic, Karel Vondrak, Josef Zadrazil, Ivan Sterzl, Jiri Mestecky, Milan Raska
BACKGROUND/AIMS: IgA nephropathy is associated with aberrant O-glycosylation of IgA1, which is recognized by autoantibodies leading to the formation of circulating immune complexes. Some of them, after deposition into kidney mesangium, trigger glomerular injury. In patients with active disease nonresponding to angiotensin-converting enzyme inhibitors or angiotensin II blockers, corticosteroids are recommended. METHODS: The relationship between the corticosteroid therapy and serum levels of IgA, aberrantly O-glycosylated IgA1, IgA-containing immune complexes and their mesangioproliferative activity was analyzed in IgA nephropathy patients and disease and healthy controls...
March 6, 2018: Kidney & Blood Pressure Research
Ding Chen, Jian Liu, Shuwei Duan, Pu Chen, Li Tang, Li Zhang, Zhe Feng, Guangyan Cai, Jie Wu, Xiangmei Chen
BACKGROUND/AIMS: In the past, little attention has been paid to patients with IgA nephropathy (IgAN) who had minimal proteinuria upon the onset. The aim of this study was to analyze the clinicopathological features and the prognostic factors in patients with IgA nephropathy. METHODS: Data of patients that had their first renal biopsy in our hospital and were diagnosed with primary IgAN with proteinuria <1 g/d from January 1995 to December 2014 were retrospectively examined...
March 6, 2018: Kidney & Blood Pressure Research
Akanksha Bhatnagar, Ulrich Pein, Silke Markau, Karl Weigand, Paolo Fornara, Matthias Girndt, Eric Seibert
BACKGROUND/AIMS: We compare conventional office blood pressure measurements with automated SPRINT-study type readings in kidney transplant recipients in order to determine the impact of the white coat effect in a prospective observational study. METHODS: Adult patients with a functional renal transplant not dependent on dialysis were eligible. Readings were taken in the office in presence of the physician with an oscillometric method. Afterwards, readings were repeated with the patients resting alone in a quiet examination room with an automated blood pressure monitor...
March 6, 2018: Kidney & Blood Pressure Research
Dechao Xu, Yiyi Ma, Xiangchen Gu, Rongrong Bian, Yunhui Lu, Xiaohong Xing, Changlin Mei
BACKGROUND/AIMS: Autosomal dominant polycystic kidney disease (ADPKD) is the most common inherited kidney disorder with mutations in PKD1 or PKD2. This study aimed to identify novel PKD1 and PKD2 mutations in Chinese patients with ADPKD. METHODS: Mutational analyses of both PKD genes were performed in 120 Chinese families with inherited ADPKD using long-range PCR and targeted next-generation sequencing approaches. Sanger sequencing was performed to check the positive mutations, while multiplex ligation-dependent probe amplification was adopted to examine those without mutations for the presence of large deletions...
March 6, 2018: Kidney & Blood Pressure Research
Věra Čertíková Chábová, Petr Kujal, Petra Škaroupková, Zdeňka Varňourková, Šárka Vacková, Zuzana Husková, Soňa Kikerlová, Janusz Sadowski, Elzbieta Kompanowska-Jezierska, Iwona Baranowska, Sung Hee Hwang, Bruce D Hammock, John D Imig, Vladimír Tesař, Ludek Červenka
BACKGROUND/AIMS: We found recently that increasing renal epoxyeicosatrienoic acids (EETs) levels by blocking soluble epoxide hydrolase (sEH), an enzyme responsible for EETs degradation, shows renoprotective actions and retards the progression of chronic kidney disease (CKD) in Ren-2 transgenic hypertensive rats (TGR) after 5/6 renal ablation (5/6 NX). This prompted us to examine if additional protection is provided when sEH inhibitor is added to the standard renin-angiotensin system (RAS) blockade, specifically in rats with established CKD...
March 6, 2018: Kidney & Blood Pressure Research
Lian He, Wan-Yu He, La-Ta A, Wen-Ling Yang, Ai-Hua Zhang
BACKGROUND/AIMS: Vascular calcification, which involves an active cellular transformation of vascular smooth muscle cells into bone forming cells, is prevalent and predicts mortality in dialysis patients. Its mechanisms are complex and unclear. We presume that irisin, a newly identified myokine also may play roles in vascular calcification in hemodialysis patients. This study aims to evaluate serum irisin levels and establish their relation to vascular calcification and other parameters in hemodialysis patients...
February 22, 2018: Kidney & Blood Pressure Research
Bo Hu, Fei Tong, Long Xu, Zhiwei Shen, Lijian Yan, Guangtao Xu, Ruilin Shen
BACKGROUND/AIMS: Renal ischemia/reperfusion (I/R) injury (RI/RI) is a common complication of diabetes, and it may be involved in altering intracellular calcium concentrations at its onset, which can result in inflammation, abnormal lipid metabolism, the production of reactive oxygen species (ROS), and nitroso-redox imbalance. The calcium-sensing receptor (CaSR) is a G-protein coupled receptor, however, the functional involvement of CaSR in diabetic RI/ RI remains unclear. The present study was intended to investigate the role of CaSR on RI/RI in diabetes mellitus (DM)...
February 22, 2018: Kidney & Blood Pressure Research
Ting Liu, Xue-Mei Chen, Ji-Ye Sun, Xu-Shun Jiang, Yue Wu, Shan Yang, Hui-Zhe Huang, Xiong-Zhong Ruan, Xiao-Gang Du
BACKGROUND/AIMS: Chronic kidney disease (CKD) is often accompanied by hyperlipidemia, which accelerates progression of the disease. Podocyte injury can lead to dysfunction of the glomerular filtration barrier, which is associated with proteinuria, a risk marker for the progression of CKD. Our previous studies demonstrated that palmitic acid (PA) can induce podocyte apoptosis; however, the underlying mechanisms are unclear. In the present study, we investigated the specific molecular mechanisms of PA-induced apoptosis in cultured podocytes...
February 22, 2018: Kidney & Blood Pressure Research
Yunlong Liu, Quan Liu, Xiang Wang, Ziqi He, Derong Li, Xiaofeng Guan, Zhiwei Tao, Yaoliang Deng
BACKGROUND/AIMS: Nephrolithiasis is a common and frequently occurring disease, its exact pathogenesis is remains unclear. Emerging data suggest that autophagy plays a vital role in the pathophysiological processes of kidney diseases. Therefore, this study was designed to investigate the potential role of autophagy in the formation of calcium oxalate (CaOx) kidney stones in rat model. METHODS: Thirty-two rats were randomly divided into four groups (eight rats/group): untreated control group, stone model group, rapamycin-treated group, chloroquine-treated group...
February 22, 2018: Kidney & Blood Pressure Research
Domingo Hernández, Juana Alonso-Titos, Ana María Armas-Padrón, Pedro Ruiz-Esteban, Mercedes Cabello, Verónica López, Laura Fuentes, Cristina Jironda, Silvia Ros, Tamara Jiménez, Elena Gutiérrez, Eugenia Sola, Miguel Angel Frutos, Miguel González-Molina, Armando Torres
The number of elderly patients on the waiting list (WL) for kidney transplantation (KT) has risen significantly in recent years. Because KT offers a better survival than dialysis therapy, even in the elderly, candidates for KT should be selected carefully, particularly in older waitlisted patients. Identification of risk factors for death in WL patients and prediction of both perioperative risk and long-term post-transplant mortality are crucial for the proper allocation of organs and the clinical management of these patients in order to decrease mortality, both while on the WL and after KT...
February 22, 2018: Kidney & Blood Pressure Research
Qibiao Su, Hua Su, Zhihuan Nong, Dongmei Li, Laiyou Wang, Shifeng Chu, Lizhen Liao, Jie Zhao, Xianbiao Zeng, Qikang Ya, Fei He, Wenjie Lu, Baowei Wei, Guining Wei, Naihong Chen
BACKGROUND/AIMS: The objective of this study is to evaluate the hypouricemic and nephroprotective effects of an active fraction from Polyrhachis vicina Roger (AFPR) in potassium oxonate-induced hyperuricemic rats. METHODS: Hyperuricemia was induced by potassium oxonate in male rats. AFPR was orally administered to hyperuricemic rats for 12 consecutive weeks. Serum, liver and kidney samples were collected for effects and mechanism analysis. The levels of serum uric acid (SUA) were measured by the phosphotungstic acid method, xanthine oxidase (XOD) activity in the hepatic and serum samples were measured by ultraviolet spectrophotometry, serum levels of interleukin-1 (IL-1β), interleukin-1 (IL-6) and tumor necrosis factor-α (TNF-α) were measured by ELISA, the levels of serum creatinine (SCr), blood urea nitrogen (BUN), super oxide dismutase (SOD) and malondialdehyde (MDA) in serum were determined by colorimetric method...
February 22, 2018: Kidney & Blood Pressure Research
Daoyuan Lv, Qin Zhou, Yue Xia, Xu You, Zhihong Zhao, Yongqiang Li, Hequn Zou
BACKGROUND/AIMS: Chronic renal allograft dysfunction (CRAD) is a leading cause of long-term renal allograft loss. Oxidative stress may account for the nonspecific interstitial fibrosis and tubular atrophy that occur in CRAD. An antioxidant intervention via Nrf2 signaling pathway activation might be a promising therapy for some kidney diseases. The present paper investigates whether there is an association between oxidative stress alleviation via sulforaphane-induced Nrf2-HO-1/NQO-1 signaling pathway activation and CRAD improvement...
February 16, 2018: Kidney & Blood Pressure Research
Rui Wu, Yiwei Kong, Jianyong Yin, Rulian Liang, Zeyuan Lu, Niansong Wang, Qing Zhao, Yang Zhou, Chungen Yan, Feng Wang, Mingyu Liang
BACKGROUND/AIMS: Antithrombin Ⅲ (AT Ⅲ) is an important endogenous anticoagulant and has strong anti-inflammatory properties. Low ATⅢ activity is considered to be a predictor of poor outcomes in several conditions, including acute kidney injury after cardiac surgery. However, the association between the ATⅢ level and the occurrence of contrast induced nephropathy (CIN) has not been elucidated. In this study, our aim was to identify the potential predictive value of ATⅢ for CIN...
February 16, 2018: Kidney & Blood Pressure Research
Susanne Eder, Johannes Leierer, Julia Kerschbaum, Laszlo Rosivall, Andrzej Wiecek, Dick de Zeeuw, Patrick B Mark, Georg Heinze, Peter Rossing, Hiddo L Heerspink, Gert Mayer
BACKGROUND/AIMS: The prevalence of diabetes mellitus type 2 and kidney disease in these patients varies widely between European countries. METHODS: In addition to store bio-samples the "Prospective cohort study in patients with type 2 diabetes mellitus for validation of biomarkers" collects information on history, physical status, laboratory measurements and medication in 4000 patients with diabetes mellitus type 2, being taken care of at the primary level of healthcare in 5 European countries (Austria, Hungary, Netherlands, Poland and Scotland)...
February 16, 2018: Kidney & Blood Pressure Research
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