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chronic kidney disease and diet

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https://www.readbyqxmd.com/read/29772737/distal-colon-motor-dysfunction-in-mice-with-chronic-kidney-disease-putative-role-of-uremic-toxins
#1
Elsa Hoibian, Nans Florens, Laetitia Koppe, Hubert Vidal, Christophe O Soulage
Although gastrointestinal complications are a common feature of patients with chronic kidney disease (CKD), the impact of uremia on bowel motility remains poorly understood. The present study was, therefore, designed to investigate the impact of uremia on gut motility. Kidney failure was induced in mice by chemical nephrectomy using an adenine diet (0.25% w/w ). Gastrointestinal transit time and colon motility were explored in vivo and ex vivo . Colons from control mice were incubated with uremic plasma or uremic toxins (urea, indoxyl-sulfate or p-cresyl-sulfate) at concentrations encountered in patients with end-stage renal disease...
May 16, 2018: Toxins
https://www.readbyqxmd.com/read/29766695/analysis-of-nutrition-and-nutritional-status-of-haemodialysis-patients
#2
Anna Bogacka, Anna Sobczak-Czynsz, Elżbieta Kucharska, Małgorzata Madaj, Katarzyna Stucka
Background: Chronic kidney disease (CKD) is a common disease of civilization where nutrition is part of the treatment. Diet therapy is difficult as it is necessary to control the intake of: energy, protein and minerals – Na, K, Ca and P in the daily food rations (DFR). Objective: The aim of the study was to assess the nutritional status and diets of haemodialysis (HD) patients. Material and method: The study involved 141 haemodialysis patients, at the average age of 65...
2018: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/29763365/effect-of-cross-linked-chitosan-iron-iii-on-vascular-calcification-in-uremic-rats
#3
Barbara Bruna Abreu de Castro, Wander Barros do Carmo, Paulo Giovani de Albuquerque Suassuna, Moises Carminatti, Julia Bianchi Brito, Wagner Vasques Dominguez, Ivone Braga de Oliveira, Vanda Jorgetti, Melani Ribeiro Custodio, Helady Sanders-Pinheiro
Cross-linked chitosan iron (III) is a chitin-derived polymer with a chelating effect on phosphorus, but it is untested in vascular calcification. We evaluated this compound's ability to reduce hyperphosphatemia and its effect on vascular calcification in uremic rats using an adenine-based, phosphorus-rich diet for seven weeks. We used a control group to characterize the uremia. Uremic rats were divided according the treatment into chronic kidney disease, CKD-Ch-Fe(III)CL (CKD-Ch), CKD-calcium carbonate, or CKD-sevelamer groups...
May 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29760664/reduced-renal-mass-salt-sensitive-hypertension-is-resistant-to-renal-denervation
#4
Ionut Tudorancea, Thomas E Lohmeier, Barbara T Alexander, Dragos Pieptu, Dragomir N Serban, Radu Iliescu
Aim: Activation of the sympathetic nervous system is common in resistant hypertension (RHT) and also in chronic kidney disease (CKD), a prevalent condition among resistant hypertensives. However, renal nerve ablation lowers blood pressure (BP) only in some patients with RHT. The influence of loss of nephrons per se on the antihypertensive response to renal denervation (RDNx) is unclear and was the focus of this study. Methods: Systemic hemodynamics and sympathetically mediated low frequency oscillations of systolic BP were determined continuously from telemetrically acquired BP recordings in rats before and after surgical excision of ∼80% of renal mass and subsequent RDNx...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29756122/very-low-protein-diet-to-postpone-renal-failure-pathophysiology-and-clinical-applications-in-chronic-kidney-disease
#5
Vincenzo Bellizzi, Patrizia Calella, Juan Jesus Carrero, Denis Fouque
The uremic syndrome is a metabolic disorder characterized by the impairment of renal handling of several solutes, the resulting accumulation of toxic products and the activation of some adaptive but detrimental mechanisms which all together contribute to the progression of renal damage. In moderate to advanced renal failure, the dietary manipulation of nutrients improves metabolic abnormalities and may contribute to delay the time of dialysis initiation. This commentary focuses on the physiopathological rationale and the clinical application of the very low-protein diet supplemented with ketoanalogs for the management of chronic kidney disease...
March 2018: Chronic Diseases and Translational Medicine
https://www.readbyqxmd.com/read/29751994/dietary-potential-renal-acid-load-and-risk-of-albuminuria-and-reduced-kidney-function-in-the-jackson-heart-study
#6
Tanushree Banerjee, Katherine Tucker, Michael Griswold, Sharon B Wyatt, Jane Harman, Bessie Young, Herman Taylor, Neil R Powe
OBJECTIVE: Diets high in sulfur-rich protein and low in fruit and vegetables affect human acid-base balance adversely and may have a harmful effect on progression of chronic kidney disease (CKD). Little is known about the relationship of participant characteristics, dietary acid load (DAL), and kidney injury in African-Americans with high risk of CKD progression. DESIGN AND METHODS: We examined the association of DAL with CKD in 3,257 African-Americans aged >20 years in Jackson Heart Study...
May 8, 2018: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/29745904/structural-analysis-of-a-petri-net-model-of-oxidative-stress-in-atherosclerosis
#7
Adam Kozak, Dorota Formanowicz, Piotr Formanowicz
Atherosclerosis is a complex process of gathering sub-endothelial plaques decreasing lumen of the blood vessels. This disorder affects people of all ages, but its progression is asymptomatic for many years. It is regulated by many typical and atypical factors including the immune system response, a chronic kidney disease, a diet rich in lipids, a local inflammatory process and a local oxidative stress that is here one of the key factors. In this study, a Petri net model of atherosclerosis regulation is presented...
June 2018: IET Systems Biology
https://www.readbyqxmd.com/read/29743031/safety-and-effectiveness-of-low-protein-diet-supplemented-with-ketoacids-in-diabetic-patients-with-chronic-kidney-disease
#8
Vincenzo Bellizzi, Patrizia Calella, Julia Nava Hernández, Verónica Figueroa González, Silvia Moran Lira, Serena Torraca, Rocio Urbina Arronte, Pietro Cirillo, Roberto Minutolo, Rafael A Montúfar Cárdenas
BACKGROUND: The impact of the low-protein diet on nutrition in CKD diabetics is uncertain. METHODS: The metabolic and nutritional effects of a low-protein (0.5-0.6 g/kg/d), normal-high energy (30-35 kcal/kg/d) diet supplemented with ketoacids (LPD-KA) were prospectively evaluated in CKD patients with (DM) and without (non-DM) diabetes mellitus. RESULTS: 197 patients on CKD stages 3-5 were enrolled. DM (n = 81) and non-DM (n = 116) were comparable for gender (Male 58 vs 55%), age (66 ± 9 vs 63 ± 18 years), renal function (eGFR 23 ± 13 vs 24 ± 13 mL/min)...
May 9, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29740333/flavonoids-in-kidney-health-and-disease
#9
REVIEW
Félix Vargas, Paola Romecín, Ana I García-Guillén, Rosemary Wangesteen, Pablo Vargas-Tendero, M Dolores Paredes, Noemí M Atucha, Joaquín García-Estañ
This review summarizes the latest advances in knowledge on the effects of flavonoids on renal function in health and disease. Flavonoids have antihypertensive, antidiabetic, and antiinflammatory effects, among other therapeutic activities. Many of them also exert renoprotective actions that may be of interest in diseases such as glomerulonephritis, diabetic nephropathy, and chemically-induced kidney insufficiency. They affect several renal factors that promote diuresis and natriuresis, which may contribute to their well-known antihypertensive effect...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29731059/long-term-follow-up-of-living-kidney-donors-with-chronic-kidney-disease-at-1-year-after-nephrectomy
#10
J C Na, J S Park, M-G Yoon, H H Lee, Y E Yoon, K H Huh, Y S Kim, W K Han
BACKGROUND: Although renal function recovery of living kidney donors has been reported in a number of studies, many patients show poor recovery, and the long-term prognosis of these patients has not been well studied. In this investigation we explored the long-term prognosis of renal function in patients with chronic kidney disease (CKD) at 1 year after nephrectomy. METHODS: Patients who underwent donor nephrectomy during the period from March 2006 to April 2014, with a follow-up creatinine study at 1 year postoperatively and more than 3 years of follow-up, were included in the study...
May 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29730503/fibulin-7-a-heparin-binding-matricellular-protein-promotes-renal-tubular-calcification-in-mice
#11
Jun Tsunezumi, Hidekazu Sugiura, Lalhaba Oinam, Aktar Ali, Bui Quoc Thang, Aiko Sada, Yoshito Yamashiro, Makoto Kuro-O, Hiromi Yanagisawa
Ectopic calcification occurs during development of chronic kidney disease and has a negative impact on long-term prognosis. The precise molecular mechanism and prevention strategies, however, are not established. Fibulin-7 (Fbln7) is a matricellular protein structurally similar to elastogenic short fibulins, shown to bind dental mesenchymal cells and heparin. Here, we report that Fbln7 is highly expressed in renal tubular epithelium in the adult kidney and mediates renal calcification in mice. In vitro analysis revealed that Fbln7 bound heparin at the N-terminal coiled-coil domain...
May 3, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29728307/outcome-measures-used-to-report-kidney-function-in-studies-investigating-surgical-management-of-kidney-tumours-a-systematic-review
#12
REVIEW
Robert J Ellis, Yeoungjee Cho, Sharon J Del Vecchio, Megan McStea, Christudas Morais, Jeff S Coombes, Simon T Wood, Glenda C Gobe, Ross S Francis
CONTEXT: Most practice decisions relevant to preserving kidney function in patients managed surgically for kidney tumours are driven by observational studies. A wide range of outcome measures are used in these studies, which reduces comparability and increases the risk of reporting bias. OBJECTIVE: To comprehensively and succinctly describe the outcomes used to evaluate kidney function in studies evaluating surgical management of kidney tumours. EVIDENCE ACQUISITION: Electronic search of the PubMed database was conducted to identify studies with at least one measure of kidney function in patients managed surgically for kidney tumours, published between January 2000 and September 2017...
May 1, 2018: European Urology Focus
https://www.readbyqxmd.com/read/29725592/urinary-virome-perturbations-in-kidney-transplantation
#13
Tara K Sigdel, Neil Mercer, Sharvin Nandoe, Carrie D Nicora, Kristin Burnum-Johnson, Wei-Jun Qian, Minnie M Sarwal
The human microbiome is important for health and plays a role in essential metabolic functions and protection from certain pathogens. Conversely, dysbiosis of the microbiome is seen in the context of various diseases. Recent studies have highlighted that a complex microbial community containing hundreds of bacteria colonizes the healthy urinary tract, but little is known about the human urinary viruses in health and disease. To evaluate the human urinary virome in the context of kidney transplantation (tx), variations in the composition of the urinary virome were evaluated in urine samples from normal healthy volunteers as well as patients with kidney disease after they had undergone kidney tx...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29716795/metformin-prevents-the-development-of-severe-chronic-kidney-disease-and-its-associated-mineral-and-bone-disorder
#14
Ellen Neven, Benjamin Vervaet, Kerstin Brand, Ulrike Gottwald-Hostalek, Britt Opdebeeck, Annelies De Maré, Anja Verhulst, Jean-Daniel Lalau, Said Kamel, Marc E De Broe, Patrick C D'Haese
Chronic kidney disease (CKD) causes dysregulation of mineral metabolism, vascular calcification and renal osteodystrophy, an entity called 'CKD-Mineral and Bone Disorder' (CKD-MBD). Here we determine whether metformin, an anti-diabetic drug, exerts favorable effects on progressive, severe CKD and concomitant mineral metabolism disturbances. Rats with CKD-MBD, induced by a 0.25% adenine diet for eight weeks, were treated with 200 mg/kg/day metformin or vehicle from one week after CKD induction onward. Severe, stable CKD along with marked hyperphosphatemia and hypocalcemia developed in these rats which led to arterial calcification and high bone turnover disease...
April 28, 2018: Kidney International
https://www.readbyqxmd.com/read/29714040/mitoprotection-preserves-the-renal-vasculature-in-porcine-metabolic-syndrome
#15
Alfonso Eirin, Ahmad F Hedayat, Christopher M Ferguson, Stephen C Textor, Amir Lerman, Lilach O Lerman
NEW FINDINGS: What is the central question of this study? We hypothesized that chronic mitoprotection would decrease renal vascular remodeling and dysfunction in swine metabolic syndrome. What is the main finding and its importance? This study shows that experimental metabolic syndrome exerts renal microvascular and endothelial cell mitochondrial injury, which were attenuated by mitoprotection, underscoring the contribution of mitochondrial injury to the pathogenesis of metabolic syndrome-induced vascular damage...
April 30, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29702558/a-low-protein-diet-for-diabetic-kidney-disease-its-effect-and-molecular-mechanism-an-approach-from-animal-studies
#16
REVIEW
Munehiro Kitada, Yoshio Ogura, Itaru Monno, Daisuke Koya
A low-protein diet (LPD) can be expected to retard renal function decline in advanced stages of chronic kidney disease (CKD), including diabetic kidney disease (DKD), and is recommended in a clinical setting. Regarding the molecular mechanisms of an LPD against DKD, previous animal studies have shown that an LPD exerts reno-protection through mainly the improvement of glomerular hyperfiltration/hypertension due to the reduction of intraglomerular pressure. On the other hand, we have demonstrated that an LPD, particularly a very-LPD (VLPD), improved tubulo-interstitial damage, inflammation and fibrosis, through the restoration of autophagy via the reduction of a mammalian target of rapamycin complex 1 (mTORC1) activity in type 2 diabetes and obesity animal models...
April 27, 2018: Nutrients
https://www.readbyqxmd.com/read/29702490/rationale-to-reduce-calcium-intake-in-adult-patients-with-chronic-kidney-disease
#17
Sharon M Moe
PURPOSE OF REVIEW: Calcium is an essential ion for the maintenance of normal bone health and physiologic functions. The extracellular and intracellular levels of calcium are maintained through hormonal regulation called homeostasis. Balance, the net intake minus excretion of calcium, is maintained by hormonal regulation of intestinal absorption and fecal/urinary excretion. Homeostasis and balance are disconnected in patients with chronic kidney disease (CKD). The purpose of this review is to understand how calcium homeostasis and balance are impaired in CKD...
April 26, 2018: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/29699886/blood-lead-levels-and-decreased-kidney-function-in-a-population-based-cohort
#18
Florencia Harari, Gerd Sallsten, Anders Christensson, Marinka Petkovic, Bo Hedblad, Niklas Forsgard, Olle Melander, Peter M Nilsson, Yan Borné, Gunnar Engström, Lars Barregard
BACKGROUND: Environmental lead exposure has been associated with decreased kidney function, but evidence from large prospective cohort studies examining low exposure levels is scarce. We assessed the association of low levels of lead exposure with kidney function and kidney disease. STUDY DESIGN: Prospective population-based cohort. SETTING & PARTICIPANTS: 4,341 individuals aged 46 to 67 years enrolled into the Malmö Diet and Cancer Study-Cardiovascular Cohort (1991-1994) and 2,567 individuals subsequently followed up (2007-2012)...
April 23, 2018: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29693449/a-translational-model-of-chronic-kidney-disease-in-swine
#19
Alejandro R Chade, Maxx L Williams, Jason E Engel, Erika Guise, Taylor W Harvey
Animal models of chronic kidney disease (CKD) are critical for understanding its pathophysiology and for therapeutic development. The cardiovascular and renal anatomy and physiology of the pig are virtually identical to humans. This study aimed to develop a novel translational model of CKD that mimics the pathological features of CKD in humans. CKD was induced in 7 domestic pigs by bilateral renal artery stenosis and diet-induced dyslipidemia. Animals were observed for a total of 14 weeks. Renal hemodynamics and function were quantified in vivo using multi-detector CT after 6, 10, and 14 weeks of CKD...
April 25, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29684213/low-thyroid-function-is-not-associated-with-an-accelerated-deterioration-in-renal-function
#20
Christiaan L Meuwese, Merel van Diepen, Anne R Cappola, Mark J Sarnak, Michael G Shlipak, Douglas C Bauer, Linda P Fried, Massimo Iacoviello, Bert Vaes, Jean Degryse, Kay-Tee Khaw, Robert N Luben, Bjørn O Åsvold, Trine Bjøro, Lars J Vatten, Anton J M de Craen, Stella Trompet, Giorgio Iervasi, Sabrina Molinaro, Graziano Ceresini, Luigi Ferrucci, Robin P F Dullaart, Stephan J L Bakker, J Wouter Jukema, Patricia M Kearney, David J Stott, Robin P Peeters, Oscar H Franco, Henry Völzke, John P Walsh, Alexandra Bremner, José A Sgarbi, Rui M B Maciel, Misa Imaizumi, Waka Ohishi, Friedo W Dekker, Nicolas Rodondi, Jacobijn Gussekloo, Wendy P J den Elzen
Background: Chronic kidney disease (CKD) is frequently accompanied by thyroid hormone dysfunction. It is currently unclear whether these alterations are the cause or consequence of CKD. This study aimed at studying the effect of thyroid hormone alterations on renal function in cross-sectional and longitudinal analyses in individuals from all adult age groups. Methods: Individual participant data (IPD) from 16 independent cohorts having measured thyroid stimulating hormone, free thyroxine levels and creatinine levels were included...
April 18, 2018: Nephrology, Dialysis, Transplantation
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