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Oxalate nephropathy

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https://www.readbyqxmd.com/read/28439568/bariatric-surgery-and-kidney-related-outcomes
#1
Alex R Chang, Morgan E Grams, Sankar D Navaneethan
The prevalence of severe obesity in both the general and the chronic kidney disease (CKD) populations continues to rise, with more than one-fifth of CKD patients in the United States having a body mass index of ≥35 kg/m(2). Severe obesity has significant renal consequences, including increased risk of end-stage renal disease (ESRD) and nephrolithiasis. Bariatric surgery represents an effective method for achieving sustained weight loss, and evidence from randomized controlled trials suggests that bariatric surgery is also effective in improving blood pressure, reducing hyperglycemia, and even inducing diabetes remission...
March 2017: KI Reports
https://www.readbyqxmd.com/read/28435765/chronic-nephropathy-from-dietary-hyperoxaluria-sustained-improvement-of-renal-function-after-dietary-intervention
#2
Yijuan Sun, Bruce L Horowitz, Karen S Servilla, Joanna R Fair, Darlene Vigil, Kavitha Ganta, Larry Massie, Antonios H Tzamaloukas
A 56-year-old man with stable chronic kidney disease (CKD) for two years following a single episode of calcium oxalate urolithiasis developed progressive elevation of his serum creatinine concentration. Urinalysis revealed pyuria and white cell casts, a few red blood cells, minimal proteinuria, and no crystals. Urine culture was sterile. Gallium scintigraphy was consistent with interstitial nephritis. Proton pump inhibitor intake was discontinued, and a short course of oral corticosteroids was initiated. Percutaneous kidney biopsy, performed because of the continued deterioration of renal function to a minimum estimated glomerular filtration rate (eGFR) value of 15 mL/min per 1...
March 20, 2017: Curēus
https://www.readbyqxmd.com/read/28392511/combination-of-vitamin-e-and-vitamin-c-alleviates-renal-function-in-hyperoxaluric-rats-via-antioxidant-activity
#3
Orapun Jaturakan, Thasinas Dissayabutra, Narongsak Chaiyabutr, Anusak Kijtawornrat, Piyaratana Tosukhowong, Anudep Rungsipipat, Thumnoon Nhujak, Chollada Buranakarl
Hyperoxaluria and oxidative stress are risk factors in calcium oxalate (CaOx) stone formation. Supplement with antioxidant could be effective in prevention of recurrent stone formation. The present study aims to evaluate the protective effects of vitamin E and vitamin C in hyperoxaluric rat. The experiment was performed in rats for 21 days. Rats were divided into 5 groups as follows: control (group 1, n=8), hyperoxaluric rats (group 2, n=8), hyperoxaluric rats with vitamin E supplement (group 3, n=7), hyperoxaluric rats with vitamin C supplement (group 4, n=7) and hyperoxaluric rats with vitamin E and C supplement (group 5, n=7)...
May 18, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28364032/sodium-glucose-transporter-2-inhibition-has-no-renoprotective-effects-on-non-diabetic-chronic-kidney-disease
#4
Qiuyue Ma, Stefanie Steiger, Hans-Joachim Anders
Sodium glucose transporter (SGLT)-2 inhibition has renoprotective effects in diabetic kidney disease. Whether similar effects can be achieved also in non-diabetic kidney disease is speculative. Chronic kidney disease was induced in C57BL/6N mice by feeding an oxalate-rich diet for 14 days, known to induce nephrocalcinosis-related tubular atrophy and interstitial fibrosis without directly affecting the glomerular compartment. Empagliflozin treatment started from day 0 of oxalate feeding had no effect on the decline of glomerular filtration rate, crystal deposition, blood urea nitrogen or serum creatinine levels on day 7 and 14...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28356078/calcium-oxalate-crystal-related-kidney-injury-in-a-patient-receiving-roux-en-y-hepaticojejunostomy-due-to-gall-bladder-cancer
#5
Jun-Li Tsai, Shang-Feng Tsai
BACKGROUND: Calcium oxalate nephropathy is rare in current practice. It was a common complication during jejunoileal bypass, but much less seen in modern gastric bypass surgery for morbid obesity. The major cause of it is enteric hyperoxaluria. CASE PRESENTATION: We report on a patient here with acute kidney disease due to calcium oxalate nephropathy, rather than the conditions mentioned above. The male patient received a Roux-en Y hepaticojejunostomy and common bile duct drainage...
March 29, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28176358/renal-calcium-oxalate-deposits-induce-a-pro-atherosclerotic-and-pro-osteoporotic-response-in-mice
#6
Kirsten Kusumi, Evan Barr-Beare, Vijay Saxena, Fayez Safedi, Andrew Schwaderer
BACKGROUND: Urinary stone disease (USD) is increasing in adult and pediatric populations Adult and pediatric studies have demonstrated decreased bone mineral density and increased fracture rates. USD has also been independently linked to increased rates of myocardial infarction and cerebral vascular accidents. Although USD is a multisystem disorder involving the kidneys, bone and vasculature, the molecular mechanisms linking these three organs remain unknown. METHODS: Calcium oxalate nephropathy was induced in C57BL/6J mice with intra-peritoneal (ip) injection of sodium glyoxolate...
February 8, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27979523/re-acute-oxalate-nephropathy-associated-with-orlistat
#7
Dean G Assimos
No abstract text is available yet for this article.
January 2017: Journal of Urology
https://www.readbyqxmd.com/read/27956392/oxalate-nephropathy-from-cashew-nut-intake
#8
Margarida Bernardino, Malvinder S Parmar
No abstract text is available yet for this article.
March 13, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/27942177/acute-kidney-injury-associated-with-ingestion-of-star-fruit-acute-oxalate-nephropathy
#9
A K Barman, R Goel, M Sharma, P J Mahanta
Starfruit (Averrhoa carambola) and its juice are popular in the Indian subcontinent as an indigenous medicine. Oxalate concentration in this fruit and it's freshly prepared juice is very high. We present a report of patients presenting with acute kidney injury due to oxalate nephropathy admitted in a single center. All patients had history of ingesting star fruit. Patients became symptomatic after 10-12 h of eating and main symptoms were pain abdomen and decrease in urine output. Three patients needed hemodialysis...
November 2016: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/27904915/studies-using-a-porcine-model-what-insights-into-human-calcium-oxalate-stone-formation-mechanisms-has-this-model-facilitated
#10
REVIEW
Kristina L Penniston, Sutchin R Patel, Denise J Schwahn, Stephen Y Nakada
Animal models are useful in the study of many human diseases. Our current understanding of the biological, physiological, and biochemical aspects of hyperoxaluria and calcium oxalate urolithiasis has been greatly informed by studies using animals. Recently, limitations in the extrapolation to humans of research results derived from laboratory rodents have been identified. The use in biomedical research of a variety of organisms, including large animals, is increasingly encouraged. The purpose of this article is to review the use of pigs in biomedical and stone research, to provide a rationale for using pigs in metabolic stone research, and to describe our 8-year experience in developing a porcine platform for studying hyperoxaluria and calcium oxalate urolithiasis...
February 2017: Urolithiasis
https://www.readbyqxmd.com/read/27845599/n-acetylcysteine-protects-against-star-fruit-induced-acute-kidney-injury
#11
Maria Heloisa Massola Shimizu, Pedro Henrique França Gois, Rildo Aparecido Volpini, Daniele Canale, Weverton Machado Luchi, Leila Froeder, Ita Pfeferman Heilberg, Antonio Carlos Seguro
BACKGROUND: Star fruit (SF) is a popular fruit, commonly cultivated in many tropical countries, that contains large amount of oxalate. Acute oxalate nephropathy and direct renal tubular damage through release of free radicals are the main mechanisms involved in SF-induced acute kidney injury (AKI). The aim of this study was to evaluate the protective effect of N-acetylcysteine (NAC) on SF-induced nephrotoxicity due to its potent antioxidant effect. MATERIALS AND METHODS: Male Wistar rats received SF juice (4 mL/100 g body weight) by gavage after a 12 h fasting and water deprivation...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/27781207/reversal-of-gastric-bypass-resolves-hyperoxaluria-and-improves-oxalate-nephropathy-secondary-to-roux-en-y-gastric-bypass
#12
Varun Agrawal, Jonathan B Wilfong, Christopher E Rich, Pamela C Gibson
Hyperoxaluria after Roux-en-Y gastric bypass (RYGB) increases the risk for kidney injury. Medical therapies for hyperoxaluria have limited efficacy. A 65-year-old female was evaluated for acute kidney injury [AKI, serum creatinine (Cr) 2.1 mg/dl, baseline Cr 1.0 mg/dl]. She did not have any urinary or gastrointestinal symptoms or exposure to nephrotoxic agents. Sixteen months prior to this evaluation, she underwent RYGB for morbid obesity. Her examination was unremarkable for hypertension or edema and there was no protein or blood on urine dipstick...
September 2016: Case Reports in Nephrology and Dialysis
https://www.readbyqxmd.com/read/27728473/acute-oxalate-nephropathy-due-to-averrhoa-bilimbi-juice
#13
Damodar Krishnan, Reena Thomas, Satheesh Balakrishnan, P Viswanathan
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27612997/hyperoxaluria-requires-tnf-receptors-to-initiate-crystal-adhesion-and-kidney-stone-disease
#14
Shrikant R Mulay, Jonathan N Eberhard, Jyaysi Desai, Julian A Marschner, Santhosh V R Kumar, Marc Weidenbusch, Melissa Grigorescu, Maciej Lech, Nuru Eltrich, Lisa Müller, Wolfgang Hans, Martin Hrabě de Angelis, Volker Vielhauer, Bernd Hoppe, John Asplin, Nicolai Burzlaff, Martin Herrmann, Andrew Evan, Hans-Joachim Anders
Intrarenal crystals trigger inflammation and renal cell necroptosis, processes that involve TNF receptor (TNFR) signaling. Here, we tested the hypothesis that TNFRs also have a direct role in tubular crystal deposition and progression of hyperoxaluria-related CKD. Immunohistochemical analysis revealed upregulated tubular expression of TNFR1 and TNFR2 in human and murine kidneys with calcium oxalate (CaOx) nephrocalcinosis-related CKD compared with controls. Western blot and mRNA expression analyses in mice yielded consistent data...
March 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27534874/from-chronic-kidney-disease-to-kidney-transplantation-the-impact-of-obesity-and-its-treatment-modalities
#15
REVIEW
Brian Camilleri, Julie M Bridson, Ajay Sharma, Ahmed Halawa
Obesity is associated with worse short-term outcomes after kidney transplantation but the effect on long-term outcomes is unknown. Although some studies have reported worse outcomes for obese recipients when compared to recipients with a BMI in the normal range, obese recipients who receive a transplant have better outcomes than those who remain wait-listed. Whether transplant candidates should be advised to lose weight before or after transplant has been debated and this is mainly due to the gap in the literature linking pre-transplant weight loss with better outcomes post-transplantation...
October 2016: Transplantation Reviews
https://www.readbyqxmd.com/read/27529510/a-double-blind-placebo-controlled-randomized-phase-1-cross-over-study-with-alln-177-an-orally-administered-oxalate-degrading-enzyme
#16
Craig B Langman, Danica Grujic, Rita M Pease, Linda Easter, Jennifer Nezzer, Alexey Margolin, Lee Brettman
BACKGROUND: Hyperoxaluria may result from increased endogenous production or overabsorption of dietary oxalate in the gastrointestinal tract leading to nephrolithiasis and, in some, to oxalate nephropathy and chronic kidney disease. ALLN-177 is an oral formulation of a recombinant, oxalate specific, microbial enzyme oxalate decarboxylase intended to treat secondary hyperoxaluria by degrading dietary oxalate in the gastrointestinal tract, thereby reducing its absorption and subsequent excretion in the urine...
2016: American Journal of Nephrology
https://www.readbyqxmd.com/read/27410399/recurrence-of-hyperoxaluria-and-kidney-disease-after-combined-intestine-kidney-transplantation-for-enteric-hyperoxaluria
#17
Burcin Ekser, Richard S Mangus, Chandrashekhar A Kubal, Jonathan A Fridell, John A Powelson, Santosh Nagaraju, Plamen Mihaylov, Carrie L Phillips, Romil Saxena, William C Goggins
BACKGROUND: Enteric hyperoxaluria (EH) occurs with a rate of 5-24% in patients with inflammatory bowel disease, ileal resection and modern bariatric surgery. The excessive absorption of calcium oxalate causes chronic kidney disease (CKD) in patients with EH. In the literature, a single experience was reported in combined intestine-kidney transplantation (CIKTx) in patients with CKD due to EH. METHODS: After a report of 2 successful cases of CIKTx in patients with EH and CKD, one was performed at our center in a 59-year-old Caucasian female who developed intestinal failure with total parenteral nutrition (TPN) dependence after a complication post-bariatric surgery...
2016: American Journal of Nephrology
https://www.readbyqxmd.com/read/27262364/an-nlrp3-specific-inflammasome-inhibitor-attenuates-crystal-induced-kidney-fibrosis-in%C3%A2-mice
#18
Isis Ludwig-Portugall, Eva Bartok, Ermanila Dhana, Beatrix D G Evers, Michael J Primiano, J Perry Hall, Bernardo S Franklin, Percy A Knolle, Veit Hornung, Gunther Hartmann, Peter Boor, Eicke Latz, Christian Kurts
Intrarenal crystal formation activates the Nlrp3 inflammasome in myeloid cells and triggers a profound inflammatory response. Here, we studied whether a specific inhibitor of the Nlrp3 inflammasome, CP-456,773, can prevent kidney fibrosis in a murine model of crystal nephropathy induced by diets rich in oxalate or adenine. Inflammasome activation in renal dendritic cells and the resulting interleukin (IL)-1β and IL-18 production were markedly reduced by CP-456,773 treatment both ex vivo and in vivo. We directly visualized intrarenal inflammasome activation and its inhibition by CP-456,773 in vivo by adoptive transfer of bone marrow cells transduced with interleukin-1β-Gaussia luciferase, a proteolytic luciferase-based reporter for inflammasome activation, into irradiated mice...
September 2016: Kidney International
https://www.readbyqxmd.com/read/27152294/acute-oxalate-nephropathy-associated-with-orlistat
#19
Youshay Humayun, Kenneth C Ball, Jack R Lewin, Anna A Lerant, Tibor Fülöp
BACKGROUND: Obesity is a major world-wide epidemic which has led to a surge of various weight loss-inducing medical or surgical treatments. Orlistat is a gastrointestinal lipase inhibitor used as an adjunct treatment of obesity and type 2 diabetes mellitus to induce clinically significant weight loss via fat malabsorption. CASE PRESENTATION: We describe a case of a 76-year-old female with past medical history of chronic kidney disease (baseline serum creatinine was 1...
April 2016: Journal of Nephropathology
https://www.readbyqxmd.com/read/27038680/myoglobin-casts-in-renal-biopsies-immunohistochemistry-and-morphologic-spectrum
#20
Helen Liapis, Christie Boils, Randolph Hennigar, Fred Silva
Five hundred eighty renal biopsies from a pool of 27850 archived cases were identified in which a myoglobin stain was performed because of atypical casts. Two hundred and thirty-eight (41%) of these biopsies were found to be positive for myoglobin casts. The morphology of the myoglobin casts ranged from light, almost translucent and refractile, to pink, to dark red and slightly brown granular casts by hematoxylin and eosin, to beaded globular casts that stained brightly fuchsinophilic with Masson trichrome and partially argyrophilic with silver methenamine...
August 2016: Human Pathology
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