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Oxalate nephropathy

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https://www.readbyqxmd.com/read/27904915/studies-using-a-porcine-model-what-insights-into-human-calcium-oxalate-stone-formation-mechanisms-has-this-model-facilitated
#1
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...
November 30, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27845599/n-acetylcysteine-protects-against-star-fruit-induced-acute-kidney-injury
#2
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 15, 2016: 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
#3
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
#4
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
#5
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...
September 9, 2016: 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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
https://www.readbyqxmd.com/read/26891675/risk-of-oxalate-nephropathy-with-the-use-of-cyanide-antidote-hydroxocobalamin-in-critically-ill-burn-patients
#12
LETTER
Matthieu Legrand, Thibault Michel, Michel Daudon, Mourad Benyamina, Axelle Ferry, Sabri Soussi, Véronique Maurel, Maïte Chaussard, Marc Chaouat, Maurice Mimoun, Jérôme Verine, Vincent Mallet, Alexandre Mebazaa
No abstract text is available yet for this article.
June 2016: Intensive Care Medicine
https://www.readbyqxmd.com/read/26680759/star-fruit-toxicity-a-cause-of-both-acute-kidney-injury-and-chronic-kidney-disease-a-report-of-two-cases
#13
R A Abeysekera, S Wijetunge, N Nanayakkara, A W M Wazil, N V I Ratnatunga, T Jayalath, A Medagama
BACKGROUND: Star fruit (Averrhoa carambola) is commonly consumed as a herbal remedy for various ailments in tropical countries. However, the dangers associated with consumption of star fruit are not commonly known. Although star fruit induced oxalate nephrotoxicity in those with existing renal impairment is well documented, reports on its effect on those with normal renal function are infrequent. We report two unique clinical presentation patterns of star fruit nephrotoxicity following consumption of the fruit as a remedy for diabetes mellitus-the first, in a patient with normal renal function and the second case which we believe is the first reported case of chronic kidney disease (CKD) due to prolonged and excessive consumption of star fruits...
December 17, 2015: BMC Research Notes
https://www.readbyqxmd.com/read/26664431/acute-oxalate-nephropathy-following-kidney-transplantation-report-of-three-cases
#14
Diana Taheri, Alaleh Gheissari, Pooria Shaabani, Seyed Reza Tabibian, Mojgan Mortazavi, Shiva Seirafian, Alireza Merrikhi, Mehdi Fesharakizadeh, Shahaboddin Dolatkhah
Calcium oxalate (CaOx) crystal deposition is a common finding immediately after kidney transplantation. However, small depositions of CaOx could be benign while extensive depositions lead to poor graft outcome. Here we report three cases with end-stage renal disease (ESRD), bilateral nephrolithiasis, and unknown diagnosis of primary hyperoxaluria (PH) who underwent a renal transplant and experienced an early-onset graft failure. Although an acute rejection was suspected, renal allograft biopsies and subsequent allograft nephrectomies showed extensive CaOx deposition, which raised a suspicion of PH...
August 2015: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/26645872/the-management-of-patients-with-enteric-hyperoxaluria
#15
REVIEW
John R Asplin
Enteric hyperoxaluria is a common occurrence in the setting of fat malabsorption, usually due to intestinal resection or intestinal bypass surgery. Enhanced intestinal absorption of dietary oxalate leads to elevated renal oxalate excretion, frequently in excess of 100 mg/d (1.14 mmol/d). Patients are at increased risk of urolithiasis and loss of kidney function from oxalate nephropathy. Fat malabsorption causes increased binding of diet calcium by free fatty acids, reducing the calcium available to precipitate diet oxalate...
February 2016: Urolithiasis
https://www.readbyqxmd.com/read/26618386/-acute-oxalate-nephropathy-in-a-patient-with-malabsorption-syndrome-for-chronic-pancreatitis
#16
LETTER
Cristóbal Gallego Muñoz, María Victoria Manzano Martín
No abstract text is available yet for this article.
November 2015: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/26614399/acute-oxalate-nephropathy-due-to-pancreatic-atrophy-in-newly-diagnosed-pancreatic-carcinoma
#17
Irfan Moinuddin, Asif Bala, Butool Ali, Husna Khan, Erika Bracamonte, Amy Sussman
Acute oxalate nephropathy can occur due to primary hyperoxaluria and secondary hyperoxaluria. The primary hyperoxalurias are a group of autosomal recessive disorders of endogenous oxalate overproduction. Secondary hyperoxaluria may occur as a result of excess dietary intake, poisoning with oxalate precursors (ethylene glycol), or enteric hyperoxaluria. The differential diagnosis of enteric hyperoxaluria includes inflammatory bowel disease, short bowel syndrome, bariatric surgery (with jejunoileal bypass or Roux-en-Y gastric bypass), celiac disease, partial colectomy, and chronic pancreatitis...
February 2016: Human Pathology
https://www.readbyqxmd.com/read/26380104/recurrence-of-crystalline-nephropathy-after-kidney-transplantation-in-aprt-deficiency-and-primary-hyperoxaluria
#18
REVIEW
Guillaume Bollée, Pierre Cochat, Michel Daudon
PURPOSE OF REVIEW: To provide transplant physicians with a summary of the pathogenesis and diagnosis of adenine phosphoribosyl transferase (APRT) deficiency and primary hyperoxaluria and, focussed on kidney transplantation, and to discuss interventions aimed at preventing and treating the recurrence of crystalline nephropathy in renal transplant recipients. SOURCE OF INFORMATION: Pubmed literature search. SETTING: Primary hyperoxaluria and APRT deficiency are rare inborn errors of human metabolism...
2015: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/26271145/acute-kidney-disease-due-to-excessive-vitamin-c-ingestion-and-remote-roux-en-y-gastric-bypass-surgery-superimposed-on-ckd
#19
REVIEW
Vasu Sunkara, Timothy D Pelkowski, Darren Dreyfus, Anjali Satoskar
A 69-year-old woman presented with acute kidney failure of unknown cause that ultimately required dialysis. Kidney biopsy revealed the diagnosis of oxalate nephropathy. In retrospect, the patient had several risk factors for this entity, including excessive vitamin C intake, a remote history of Roux-en-Y gastric bypass for weight loss, and chronic kidney disease. This presentation of multiple risk factors for oxalate nephropathy is especially relevant to patients and physicians considering the increase in the United States of vitamin C supplementation use and gastric bypass surgery...
October 2015: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/26239907/oxalate-nephropathy-in-systemic-sclerosis-case-series-and-review-of-the-literature
#20
REVIEW
Colin B Ligon, Laura K Hummers, Zsuzsanna H McMahan
OBJECTIVE: To increase awareness of oxalate nephropathy as a cause of acute kidney injury (AKI) among systemic sclerosis patients with small intestinal dysmotility and malabsorption, and to prompt consideration of dietary modification and early treatment of predisposing causes of oxalate nephropathy in this population. METHODS: Two cases of biopsy-proven oxalate nephropathy were identified among systemic sclerosis patients in the course of direct clinical care. Subsequently, a retrospective search of the Johns Hopkins Pathology databases identified a third patient with systemic sclerosis who developed oxalate nephropathy...
December 2015: Seminars in Arthritis and Rheumatism
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