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Calcium oxalate stone

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https://www.readbyqxmd.com/read/28912866/compositional-analysis-of-various-layers-of-upper-urinary-tract-stones-by-infrared-spectroscopy
#1
Zhang He, Zhang Jing, Zheng Jing-Cun, Hu Chuan-Yi, Gao Fei
The objective of the present study was to determine the composition of various layers of upper urinary stones and assess the mechanisms of stone nucleation and aggregation. A total of 40 integrated urinary tract stones with a diameter of >0.8 cm were removed from the patients. All of the stones were cut in half perpendicularly to the longitudinal axis. Samples were selected from nuclear, internal and external layers of each stone. Fourier transform infrared spectroscopy (FT-IR) was adopted for qualitative and quantitative analysis of all of the fragments and compositional differences among nuclear, internal and external layers of various types of stone were subsequently investigated...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28891172/urolithiasis-is-prevalent-and-associated-with-reduced-bone-mineral-density-in-%C3%AE-thalassaemia-major
#2
Phillip Wong, Frances Milat, Peter J Fuller, Peter G Kerr, James C G Doery, Danielle H Oh, Dana Jackson, Matthew T Gillespie, Donald K Bowden, Sant-Rayn Pasricha, Ken K Lau
Asymptomatic urolithiasis is common and of mixed composition in patients with β-thalassaemia major. Twenty-seven subjects were imaged using dual-energy computer tomography to determine the presence and composition of urolithiasis. The prevalence of urolithiasis was 59% and affected patients generally had multiple stones, often with more than one component: struvite (33%), calcium oxalate (31%) and cystine (22%). Hypercalciuria was present in 78% of subjects and calcium-containing urolithiasis was associated with reduced femoral neck Z scores...
September 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28882031/a-multiregional-italian-cohort-of-24-hour-urine-metabolic-evaluation-in-renal-stone-formers
#3
Francesco Esperto, Martino Marangella, Alberto Trinchieri, Michele Petrarulo, Roberto Miano
BACKGROUND: Nephrolithiasis is a common condition with several studies documenting an increased prevalence over the past four decades. EAU and AUA guidelines recommend 24-hour urine metabolic evaluation in high-risk stone formers. Aim of this study is to retrospectively evaluate the first three years of experience with Lithotest® (Biohealth Italia Srl, Turin, Italy) through the analysis of demographic, clinical and biochemical data collected from a large cohort of patients with kidney stones...
September 7, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28875258/molecular-analysis-of-oxalate-induced-endoplasmic-reticulum-stress-mediated-apoptosis-in-the-pathogenesis-of-kidney-stone-disease
#4
Albert Abhishek, Shaly Benita, Monika Kumari, Divya Ganesan, Eldho Paul, Ponnusamy Sasikumar, Ayyavu Mahesh, Subramani Yuvaraj, Tharmarajan Ramprasath, Govindan Sadasivam Selvam
Oxalate, a non-essential end product of metabolism, causes hyperoxaluria and eventually calcium oxalate (CaOx) stone disease. Kidney cells exposed to oxalate stress results in generation of reactive oxygen species (ROS) and progression of stone formation. Perturbations in endoplasmic reticulum (ER) result in accumulation of misfolded proteins and Ca(2+) ions homeostasis imbalance and serve as a common pathway for various diseases, including kidney disorders. ER stress induces up-regulation of pro-survival protein glucose-regulated protein 78 (GRP78) and pro-apoptotic signaling protein C/EBP homologous protein (CHOP)...
September 5, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28853104/the-association-of-household-food-insecurity-and-the-risk-of-calcium-oxalate-stones
#5
Hamid Shafi, Ahmad-Reza Dorosty Motlagh, Mohammad Bagherniya, Atefeh Daeezadeh, Mohammad Safarian
PURPOSE: Food insecurity has been defined as 'limited or uncertain availability of nutritionally adequate and safe foods', which associated with adverse health consequences in human. Another alarming condition, which is related to several comorbidities is kidney stone. This study aimed to determine the association of household food insecurity and developing kidney stones (calcium oxalate) in adults referred to medical centers of Babol. MATERIALS AND METHODS: This case-control study included 200 participants 18-65 years of ages (100 cases, 100 controls)...
August 29, 2017: Urology Journal
https://www.readbyqxmd.com/read/28845932/-early-diagnosis-of-risk-for-developing-calcium-oxalate-urolithiasis
#6
O I Apolikhin, A V Sivkov, O V Konstantinova, P A Slominskii, T V Tupitsyna, D N Kalinichenko
AIM: To identify risk groups for calcium oxalate urolithiasis among healthy individuals and patients with urolithiasis in the Russian population using molecular genetics. MATERIALS AND METHODS: The study comprised 72 patients with calcium oxalate urolithiasis (study group) and 189 healthy adults from the general Russian population (control group). The study group consisted of 39 (54.2%) men and 33 (45.8%) women. The mean age of urolithiasis patients was 41.5+/-12...
July 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28841836/oxalobacter-formigenes-associated-host-features-and-microbial-community-structures-examined-using-the-american-gut-project
#7
Menghan Liu, Hyunwook Koh, Zachary D Kurtz, Thomas Battaglia, Amanda PeBenito, Huilin Li, Lama Nazzal, Martin J Blaser
BACKGROUND: Increasing evidence shows the importance of the commensal microbe Oxalobacter formigenes in regulating host oxalate homeostasis, with effects against calcium oxalate kidney stone formation, and other oxalate-associated pathological conditions. However, limited understanding of O. formigenes in humans poses difficulties for designing targeted experiments to assess its definitive effects and sustainable interventions in clinical settings. We exploited the large-scale dataset from the American Gut Project (AGP) to study O...
August 25, 2017: Microbiome
https://www.readbyqxmd.com/read/28830863/effectiveness-of-treatment-modalities-on-kidney-stone-recurrence
#8
Anna L Zisman
Nephrolithiasis is highly prevalent across all demographic groups in the Western world and beyond, and its incidence rates are rising. In addition to the morbidity of the acute event, stone disease often becomes a lifelong problem that requires preventative therapy to diminish ongoing morbidity. Across the majority of stone types, increased fluid intake and targeted dietary modifications are mainstays of therapy. Specific dietary interventions associated with reduced calcium stone risk include adequate dietary calcium intake and restriction of sodium, protein, and oxalate intake, among others...
August 22, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28822796/papillary-ductal-plugging-is-a-mechanism-for-early-stone-retention-in-brushite-stone-disease
#9
James C Williams, Michael S Borofsky, Sharon B Bledsoe, Andrew P Evan, Fredric L Coe, Elaine M Worcester, James E Lingeman
PURPOSE: Mechanisms of early stone retention within the kidney are understudied and poorly understood. To date, attachment via Randall's plaque is the only widely accepted theory in this regard, best described in idiopathic calcium oxalate stone formers. Brushite stone formers are known to have distinct papillary morphology relative to calcium oxalate stone formers. As such, we sought to determine whether stone attachment mechanisms in such patients may be similarly unique. MATERIALS AND METHODS: Patients undergoing percutaneous and or ureteroscopic procedures for stone removal were consented for endoscopic renal papillary examination and individual stone collection...
August 16, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28808737/development-of-neutron-imaging-quantitative-data-treatment-to-assess-conservation-products-in-cultural-heritage
#10
Marco Realini, Chiara Colombo, Claudia Conti, Francesco Grazzi, Enrico Perelli Cippo, Jan Hovind
Distribution, penetration depth and amount of new mineralogical phases formed after the interaction between an inorganic treatment and a matrix are key factors for the evaluation of the conservation treatment behaviour. Nowadays, the conventional analytical methodologies, such as vibrational spectroscopies, scanning electron microscopy and X-ray diffraction, provide only qualitative and spot information. Here, we report, for the first time, the proof of concept of a methodology based on neutron imaging able to achieve quantitative data useful to assess the formation of calcium oxalate in a porous carbonatic stone treated with ammonium oxalate...
August 14, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28808392/antiurolithiatic-effect-of-sirupeelai-samoola-kudineer-a-polyherbal-siddha-decoction-on-ethylene-glycol-induced-renal-calculus-in-experimental-rats
#11
A Hannah Rachel Vasanthi, V Muthulakshmi, V Gayathri, R Manikandan, S Ananthi, Sarah Kuruvilla
BACKGROUND: Sirupeelai Samoola Kudineer (SK), a polyherbal decoction containing four medicinal plants has been used in Siddha system of medicine, practiced in Southern parts of India for the management of urolithiasis. OBJECTIVE: The present study is carried out to scientifically validate the traditional claim and to study the mechanism of action of the drug. MATERIALS AND METHODS: In the present study, anti-urolithiatic effect of SK was evaluated in Sprague-Dawley rats using ethylene glycol through drinking water and intraperitoneal injection of sodium oxalate...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28776346/chronological-trends-in-clinical-and-urinary-metabolic-features-over-20-years-in-korean-urolithiasis-patients
#12
Ho Won Kang, Sung Pil Seo, Yun Sok Ha, Won Tae Kim, Yong June Kim, Seok Joong Yun, Wun Jae Kim, Sang Cheol Lee
Urolithiasis is common and is becoming more prevalent worldwide. This study assessed the chronological trends in clinical and urinary metabolic features over 20 years in Korean urolithiasis patients. We performed a retrospective analysis of 4,076 patients treated at our clinic from 1996 to 2015. Urinary metabolic data and stone analysis data were available for 1,421 and 723 patients (34.9% and 17.7%), respectively. Patients were categorized into 4 groups according to the date of initial diagnosis: group 1 (1996-2000, n = 897), group 2 (2001-2005, n = 1,018), group 3 (2006-2010, n = 1,043), and group 4 (2011-2015, n = 1,118)...
September 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28776078/sarna-mediated-activation-of-trpv5-reduces-renal-calcium-oxalate-deposition-in-rat-via-decreasing-urinary-calcium-excretion
#13
Tao Zeng, Xiaolu Duan, Wei Zhu, Yang Liu, Wenqi Wu, Guohua Zeng
Hypercalciuria is a main risk factor for kidney stone  formation. TRPV5 is the gatekeeper protein for mediating calcium transport and reabsorption in the kidney. In the present study, we tested the effect of TRPV5 activation with small activating RNA (saRNA), which could induce gene expression by targeting the promoter of the gene, on ethylene glycol (EG)-induced calcium oxalate (CaOx) crystals formation in rat kidney. Five pairs of RNA activation sequences targeting the promoter of rat TRPV5 were designed and synthesized...
August 3, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28775336/shape-dependent-cellular-toxicity-on-renal-epithelial-cells-and-stone-risk-of-calcium-oxalate-dihydrate-crystals
#14
Xin-Yuan Sun, Jian-Ming Ouyang, Kai Yu
Renal epithelial cell injury causes crystal retention and leads to renal stone formation. However, the effects of crystal shape on cell injury and stone risk remain unclear. This study compared the cytotoxicity degrees of calcium oxalate dihydrate (COD) crystals having different shapes toward human kidney proximal tubular epithelial (HK-2) cells to reveal the effect of crystal shape on cell injury and to elucidate the pathological mechanism of calcium oxalate kidney stones. The effects of exposure to cross-shaped (COD-CS), flower-like (COD-FL), bipyramid (COD-BD), and elongated-bipyramid (COD-EBD) COD crystals on HK-2 cells were investigated by examining the cell viability, cell membrane integrity, cell morphology change, intracellular reactive oxygen species, mitochondrial membrane potential (Δψm), and apoptotic and/or necrotic rate...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28759644/the-influence-of-serum-uric-acid-on-renal-function-in-patients-with-calcium-or-uric-acid-stone-a-population-based-analysis
#15
Yoshimi Tanaka, Shingo Hatakeyama, Toshikazu Tanaka, Hayato Yamamoto, Takuma Narita, Itsuto Hamano, Teppei Matsumoto, Osamu Soma, Teppei Okamoto, Yuki Tobisawa, Tohru Yoneyama, Takahiro Yoneyama, Yasuhiro Hashimoto, Takuya Koie, Ippei Takahashi, Shigeyuki Nakaji, Yuriko Terayama, Tomihisa Funyu, Chikara Ohyama
OBJECTIVES: To determine the influence of serum uric acid (UA) levels on renal impairment in patients with UA stone. MATERIALS AND METHODS: We retrospectively analyzed 463 patients with calcium oxalate and/or calcium phosphate stones (CaOx/CaP), and 139 patients with UA stones. The subjects were divided into the serum UA-high (UA ≥ 7.0 mg/dL) or the UA-low group (UA < 7.0 mg/dL). The control group comprised 3082 community-dwelling individuals that were pair-matched according to age, sex, body mass index, comorbidities, hemoglobin, serum albumin, and serum UA using propensity score matching...
2017: PloS One
https://www.readbyqxmd.com/read/28739373/analyte-variations-in-consecutive-24-hour-urine-collections-in-children
#16
Jonathan S Ellison, John M Hollingsworth, Craig B Langman, John R Asplin, Andrew L Schwaderer, Phyllis Yan, Maggie Bierlein, Mark A Barraza, William R Defoor, T Ernesto Figueroa, Elizabeth C Jackson, Venkata R Jayanthi, Emilie K Johnson, David B Joseph, Margarett Shnorhavorian
PURPOSE: The metabolic evaluation of children with nephrolithiasis begins with a 24-h urine collection. For adults, the diagnostic yield increases with consecutive collections; however, little is known regarding the variability of multiple 24-h studies in the pediatric population. We sought to evaluate the variability of consecutive 24-h urine collection in children through a multi-institutional study hypothesizing that compared with a single collection, consecutive 24-h urine collections would reveal a greater degree of clinically useful information in the evaluation of children at risk for nephrolithiasis...
July 12, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28716570/protective-effects-of-pistacia-lentiscus-l-fruit-extract-against-calcium-oxalate-monohydrate-induced-proximal-tubular-injury
#17
Nassima Cheraft-Bahloul, Cécile Husson, Meriam Ourtioualous, Sébastien Sinaeve, Djebbar Atmani, Caroline Stévigny, Joëlle L Nortier, Marie-Hélène Antoine
ETHNOPHARMACOLOGICAL RELEVANCE: The world prevalence of kidney stones is increasing and plants are frequently used to treat urolithiasis. Pistacia lentiscus L, a plant which freely grows around the Mediterranean basin areas, is widely used for various pathologies. P. lentiscus has an important impact as it has economical value on top of its pharmacological interest. Decoctions of its aerial parts and/or resin are used to treat kidney stones. AIM OF THE STUDY: To in vitro assess the potential nephroprotective effect of Pistacia lentiscus ethanolic fruit extract (PLEF) on proximal tubular cells in response to the adhesion of calcium oxalate monohydrate (COM) crystals...
July 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28707190/novel-porcine-model-for-calcium-oxalate-stone-formation
#18
Brandon P Trojan, Sara J Trojan, Andrew Navetta, Bryce Staches, Bryan Sutton, Stephanie Filleur, Thomas Nelius
BACKGROUND: Mechanisms for calcium-based stone formation are not clearly delineated. Porcine are the most anatomically and physiologically congruent mammal to humans. Our objectives were to develop a cost-effective and easily reproducible porcine model for the study of calcium-based nephrolithiasis. METHODS: Crossbred male pigs (n = 16) were assigned randomly to one of the following treatments: (1) control; (2) ethylene glycol (EG) + vitamin D (VD); (3) EG + ammonium chloride (AC); (4) EG + gentamicin (G); (5) EG + Lasix; (6) EG + VD + AC; (7) EG + VD + G...
July 13, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28705575/can-a-simplified-12-hour-nighttime-urine-collection-predict-urinary-stone-risk
#19
Bryan D Hinck, Vishnuvardhan Ganesan, Sarah Tarplin, John Asplin, Ignacio Granja, Juan Calle, Sri Sivalingam, Manoj Monga
OBJECTIVE: To determine if there is correlation between nighttime 12-hour and traditional 24-hour urine collection in regard to chemistry values and the supersaturations of calcium oxalate, calcium phosphate, and uric acid for the metabolic evaluation of nephrolithiasis. MATERIALS AND METHODS: Ninety-five patients were prospectively enrolled from 2013 to 2015. Patients >18 years of age who presented to a tertiary stone clinic and who would normally be counseled for 24-hour urine collection were eligible for the study...
July 10, 2017: Urology
https://www.readbyqxmd.com/read/28689648/clinical-and-genetic-characterization-of-chinese-pediatric-cystine-stone-patients
#20
Luming Shen, Xiaoming Cong, Xin Zhang, Ninghong Wang, Ping Zhou, Yan Xu, Qingyi Zhu, Xiaojian Gu
INTRODUCTION: Cystine stone is the only clinical manifestation in patients with cystinuria, which is an autosomal recessive inheritable disease. However, clinical and genetic data vary among patients in different countries. OBJECTIVE: To investigate the characteristics of Chinese pediatric cystine stone patients. PATIENTS AND METHODS: Thirteen pediatric patients with cystine stones were evaluated in our clinic between 2012 and 2015. Gene mutations in SLC3A1 and SLC7A9 were investigated...
June 24, 2017: Journal of Pediatric Urology
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