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https://www.readbyqxmd.com/read/28221144/-may-renal-lithiasis-be-really-prevented-new-trends-and-therapeutic-tools
#1
Félix Grases, Antonia Costa-Bauzá, Rafael M Prieto
Renal calculi are generally formed as a result of the combination of certain factors, some related to urine composition (concentration of lithogenic substances, deficiency of crystallization inhibitors, presence of heterogeneous nucleants) and others with renal morphology and anatomy (urinary tract stasis, low urodynamic efficiency cavities, morpho-anatomic deformations, renal papillary tissue lesions). In fact, the composition, macrostructure and microstructure of the calculus will clearly depend on the factors that have induced it...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28221141/-etiopathogenic-factors-of-the-different-types-of-urinary-litiasis
#2
Miguel Arrabal-Martín, María Carmen Cano-García, Miguel Ángel Arrabal-Polo, Alejandro Domínguez-Amillo, Nelson Canales-Casco, Javier de la Torre-Trillo, José Manuel Cózar-Olmo
In this review, we analyze the etiopathogenic principles of urinary lithiasis formation. In the kidney, calcifications that may cause renal lithiasis are produced as a consequence of processes that injury the urothelium at the papilla and Bellini's ducts. With the improvement of imaging techniques, mainly micro CT scan, it is possible to detect them and we may be able to anticipate to the formation of lithiasis. As we well know, there are different factors that influence the formation of the calculi depending on their composition...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28220601/multiple-sclerosis-and-nephrolithiasis-a-matched-case-comparative-study
#3
Vishnu Ganesan, Wen Min Chen, Rajat Jain, Shubha De, Manoj Monga
OBJECTIVE: To compare stone composition and serum/urine biochemistries in stone formers with multiple sclerosis (MS) against stone formers without MS and to examine the association between mobility, methods of bladder emptying, and stone formation. MATERIALS AND METHODS: In this retrospective case-control study, we identified patients diagnosed with multiple sclerosis and kidney stone disease who were seen at our institution between 2001 and 2016. For the first part of the study, up to 2 controls (stone formers without a history of MS) were identified for each case and matched on age, body mass index (BMI), and sex...
February 20, 2017: BJU International
https://www.readbyqxmd.com/read/28213803/first-experiences-with-neuropsychological-effects-of-oxytocin-administration-in-childhood-onset-craniopharyngioma
#4
Anika Hoffmann, Jale Özyurt, Kristin Lohle, Julia Reichel, Christiane M Thiel, Hermann L Müller
PURPOSE: The hypothalamic hormone oxytocin plays a major role in regulation of behavior and body composition. Quality of survival is frequently impaired in childhood craniopharyngioma patients due to sequelae such as behavioral deficits and severe obesity caused by tumor or treatment-related hypothalamic lesions. METHODS: In our pilot cross-sectional study, we analyzed emotion recognition abilities and oxytocin concentrations in saliva and urine before and after single nasal administration of 24 IU oxytocin in 10 craniopharyngioma patients...
February 17, 2017: Endocrine
https://www.readbyqxmd.com/read/28210756/high-precision-zinc-stable-isotope-measurement-of-certified-biological-reference-materials-using-the-double-spike-technique-and-multiple-collector-icp-ms
#5
Rebekah E T Moore, Fiona Larner, Barry J Coles, Mark Rehkämper
Biological reference materials with well-characterised stable isotope compositions are lacking in the field of 'isotope biochemistry', which seeks to understand bodily processes that rely on essential metals by determining metal stable isotope ratios. Here, we present Zn stable isotope data for six biological reference materials with certified trace metal concentrations: fish muscle, bovine muscle, pig kidney, human hair, human blood serum and human urine. Replicate analyses of multiple aliquots of each material achieved reproducibilities (2sd) of 0...
February 16, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28210249/feeding-a-high-concentration-diet-induces-unhealthy-alterations-in-the-composition-and-metabolism-of-ruminal-microbiota-and-host-response-in-a-goat-model
#6
Canfeng Hua, Jing Tian, Ping Tian, Rihua Cong, Yanwen Luo, Yali Geng, Shiyu Tao, Yingdong Ni, Ruqian Zhao
There is limited knowledge about the impact of long-term feeding a high-concentrate (HC) diet on rumen microbiota, metabolome, and host cell functions. In this study, a combination of mass spectrometry-based metabolomics techniques, 454 pyrosequencing of 16S rDNA genes, and RT-PCR was applied to evaluate the changes of ruminal microbiota composition, ruminal metabolites, and related genes expression in rumen epithelial cells of lactating goats received either a 35% concentrate diet or a 65% concentrate diet for 4 or 19 weeks, respectively...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28201933/determination-and-prediction-of-the-digestible-and-metabolisable-energy-content-of-barley-for-growing-pigs-based-on-chemical-composition
#7
Hongliang Wang, Meng Shi, Xiao Xu, Long Pan, Xiaokang Ma, Ping Li, Xiangshu Piao
This experiment was conducted to define the sources of variation determining the energy content of barley and to develop a practical method to predict the digestible energy (DE) and metabolisable energy (ME) content of individual barley samples. The 19 barley samples used in this study were diverse varieties grown in different regions. The feeding experiment used 57 barrows (initial body weight 31.5 ± 3.2 kg) and was conducted over two consecutive periods (n = 6 per treatment) using a completely randomised design...
April 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28193357/efficient-and-clean-pre-concentration-of-ultra-trace-calcium-channel-blockers-from-biological-matrices-via-a-hyphenated-procedure-of-two-sequential-dispersive-solid-liquid-phase-microextractions
#8
Maryam Hemmati, Maryam Rajabi, Alireza Asghari
In the present work, we propose a safe, simple, and relatively rapid procedure for the efficient clean-up and pre-concentration of ultra-trace calcium channel blockers (CCBs) from the human plasma and urine samples followed by high performance liquid chromatography-ultraviolet detection. The proposed sample preparation method is a combination of two microextraction methods termed as ultrasound-assisted dispersive micro solid-phase extraction coupled with air-agitated liquid-liquid microextraction based on solidification of a floating organic droplet (UA-dμSPE-AA-LLME-SFO)...
April 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28191531/urine-biomarkers-in-renal-allograft
#9
Hongting Wang, Zuan-Tao Lin, Yulin Yuan, Tianfu Wu
There is a high risk for the survival of patients with an end-stage renal disease for kidney transplantation. To avoid rejection by strict medication adherence is of utmost importance to avoid the failure of a kidney transplant. It is imperative to develop non-invasive biomarkers to assess immunity risk, and to ultimately provide guidance for therapeutic decision-making following kidney transplantation. Urine biomarkers may represent the promising non-invasive tools that will help in predicting risk or success rates of kidney transplantations...
September 1, 2016: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28181139/cytoprotective-and-anti-apoptotic-role-of-terminalia-arjuna-on-oxalate-injured-renal-epithelial-cells
#10
Amisha Mittal, Simran Tandon, Surender Kumar Singla, Chanderdeep Tandon
Urolithiasis is one of the painful multifactorial disorders caused by metabolic abnormalities influencing the composition of body fluids and urine. The bark of Terminalia arjuna (T. arjuna), very well known in Ayurveda for the treatment of cardiovascular diseases, possesses antioxidant and diuretic activity. The present study was undertaken to investigate the antiurolithiatic efficacy of aqueous extract of bark of T. arjuna on oxalate-induced injury to renal tubular epithelial cells. Madin-Darby canine kidney (MDCK) cells were exposed to 2 mM oxalate for 48 h to evaluate the protective effect of T...
February 8, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28178975/evaluation-of-dogs-with-genetic-hyperuricosuria-and-urate-urolithiasis-consuming-a-purine-restricted-diet-a-pilot-study
#11
Jodi L Westropp, Jennifer A Larsen, Eric G Johnson, Dannika Bannasch, Andrea J Fascetti, Vincent Biourge, Yann Queau
BACKGROUND: Urate urolithiasis is a common problem in breed homozygous for the mutation that results in hyperuricosuria. Low purine diets have been recommended to reduce purine intake in these dogs. METHODS: A higher protein, purine restricted diet with water added was evaluated in dogs with genetic hyperuricosuria and a history of clinical urate urolithiasis over a one year time period. Dogs were evaluated at baseline and 2, 6, and 12 months after initiating the test diet...
February 8, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28178632/impact-of-bioaccessibility-and-bioavailability-of-phenolic-compounds-in-biological-systems-upon-the-antioxidant-activity-of-the-ethanolic-extract-of-triplaris-gardneriana-seeds
#12
José Joaquim Lopes Neto, Thiago Silva de Almeida, Jackeline Lima de Medeiros, Leonardo Rogério Vieira, Thaís Borges Moreira, Ana Isabel Vitorino Maia, Paulo Riceli Vasconcelos Ribeiro, Edy Sousa de Brito, Davi Felipe Farias, Ana Fontenele Urano Carvalho
The most studied bioactive potential of phenolic compounds corresponds to antioxidant activity, which in turn, is associated with a reduction in the incidence of various human diseases. However, the total quantity of these bioactive substances in foods and medicinal preparations does not reflect the amount absorbed and metabolized by the body. The present study aimed to investigate the bioaccessibility of Triplaris gardneriana seeds ethanolic extract (EETg) by determination of phenolic composition and antioxidant activities before and after in vitro digestion as well as to estimate its bioavailability by chemical analysis of plasma and urine in animal models after oral administration...
February 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28177393/acidogenic-mineral-additions-increased-ca-mobilization-in-prepartum-sows
#13
C Darriet, D E Axe, T D Crenshaw
Increased sow milk production is associated with an increase in unexplained sow mortality during prepartum and early postpartum periods. This association has led to purported claims of hypocalcemic disorders. Assuming similar responses as dairy cows, feeding anionic mineral salts in late gestation and early lactation may reduce potential hypocalcemia related disorders in sows. Two experiments using CAD-MATE (Granco Minerals, Petersburg, VA), an acidogenic mineral supplement (AMS), were designed to determine the amount required to increase urinary Ca excretion and to identify renal compensatory responses to acid loads in sows...
January 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28169975/simple-urine-test-to-evaluate-adherence-to-oral-5-asa-in-teenagers-with-ulcerative-colitis-proof-of-concept
#14
Alie Dijkstra, Daan J Touw, Patrick F van Rheenen
OBJECTIVES: 5-aminosalicylic acid (5-ASA) is an important maintenance drug for patients with ulcerative colitis. A proportion of the ingested dose is excreted in the urine. Measuring 5-ASA and its metabolites in urine requires mass spectrometry, which is not widely available for this purpose. Urinary 5-ASA can be measured by colorimetry using the serum salicylic acid assay and is a surrogate marker of recent 5-ASA ingestion. We evaluated whether measuring 5-ASA in first morning voids or in random spot urine samples correctly identifies teenagers with poor adherence to oral 5-ASA...
February 4, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28168715/efficacy-safety-and-tolerability-of-the-ccr1-antagonist-bay-86-5047-for-the-treatment-of-endometriosis-associated-pelvic-pain-a-randomized-controlled-trial
#15
Dietmar Trummer, Anja Walzer, Esther Groettrup-Wolfers, Heinz Schmitz
INTRODUCTION: Antagonism of CC chemokine receptor type 1 (CCR1) may provide a novel treatment approach for women with symptomatic endometriosis. Studies of CCR1 antagonists in these patients have not been reported. MATERIALS AND METHODS: Women (n = 110; 18-45 years) with symptomatic endometriosis were randomized to BAY 86-5047 or placebo for 12 weeks. Pelvic pain was assessed using the visual analogue scale (VAS) and women recorded the intake of pain medication in a diary...
February 6, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28157663/screening-and-identi%C3%AF-cation-of-the-main-metabolites-of-2-amino-9h-pyrido-2-3-b-indole-a%C3%AE-c-in-liver-microsomes-and-rat-urine-by-using-uplc-q-tof-ms-ms
#16
Kai Hu, Ge Zhao, Yufeng Fu, Sheng Wang, Hang Yuan, Fuwei Xie, Shusheng Zhang, Huimin Liu, Minying Liu
2-Amino-9H-pyrido[2,3-b]indole (AαC), which has been reported to be 40-258ng per cigarette, was regarded as a probable human carcinogen (Group 2B) and harmful composition in Hoffman list. Thus, it is of great significance to develop an effective method for the accurate identification of AαC and its metabolites. In the present study, we have investigated for the first time the in vivo and in vitro metabolites of AαC using ultra performance liquid chromatography combined with diode array detector and time-of-flight mass spectrometry (UPLC-DAD and UPLC-Q-TOF-MS/MS)...
January 26, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28143522/aspirin-intervention-for-the-reduction-of-colorectal-cancer-risk-aspired-a-study-protocol-for-a-randomized-controlled-trial
#17
David A Drew, Samantha M Chin, Katherine K Gilpin, Melanie Parziale, Emily Pond, Madeline M Schuck, Kathleen Stewart, Meaghan Flagg, Crystal A Rawlings, Vadim Backman, Peter J Carolan, Daniel C Chung, Francis P Colizzo, Matthew Freedman, Manish Gala, John J Garber, Curtis Huttenhower, Dmitriy Kedrin, Hamed Khalili, Douglas S Kwon, Sanford D Markowitz, Ginger L Milne, Norman S Nishioka, James M Richter, Hemant K Roy, Kyle Staller, Molin Wang, Andrew T Chan
BACKGROUND: Although aspirin is recommended for the prevention of colorectal cancer, the specific individuals for whom the benefits outweigh the risks are not clearly defined. Moreover, the precise mechanisms by which aspirin reduces the risk of cancer are unclear. We recently launched the ASPirin Intervention for the REDuction of colorectal cancer risk (ASPIRED) trial to address these uncertainties. METHODS/DESIGN: ASPIRED is a prospective, double-blind, multidose, placebo-controlled, biomarker clinical trial of aspirin use in individuals previously diagnosed with colorectal adenoma...
February 1, 2017: Trials
https://www.readbyqxmd.com/read/28129394/characterization-of-early-phase-neutrophil-extracellular-traps-in-urinary-tract-infections
#18
Yanbao Yu, Keehwan Kwon, Tamara Tsitrin, Shiferaw Bekele, Patricia Sikorski, Karen E Nelson, Rembert Pieper
Neutrophils have an important role in the antimicrobial defense and resolution of urinary tract infections (UTIs). Our research suggests that a mechanism known as neutrophil extracellular trap (NET) formation is a defense strategy to combat pathogens that have invaded the urinary tract. A set of human urine specimens with very high neutrophil counts had microscopic evidence of cellular aggregation and lysis. Deoxyribonuclease I (DNase) treatment resulted in disaggregation of such structures, release of DNA fragments and a proteome enriched in histones and azurophilic granule effectors whose quantitative composition was similar to that of previously described in vitro-formed NETs...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28128225/one-pot-green-synthesis-of-graphene-nanosheets-encapsulated-gold-nanoparticles-for-sensitive-and-selective-detection-of-dopamine
#19
Balamurugan Thirumalraj, Chellakannu Rajkumar, Shen-Ming Chen, Selvakumar Palanisamy
We report a simple new approach for green preparation of gallic acid supported reduced graphene oxide encapsulated gold nanoparticles (GA-RGO/AuNPs) via one-pot hydrothermal method. The as-prepared composites were successfully characterized by using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray powder diffraction techniques (XRD), scanning electron microscope (SEM), high resolution transmission electron microscopy (HRTEM) and elemental analysis. The GA-RGO/AuNPs modified electrode behaves as a hybrid electrode material for sensitive and selective detection of dopamine (DA) in presence of ascorbic acid (AA) and uric acid (UA)...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28126412/prenatal-exposure-to-an-environmentally-relevant-phthalate-mixture-disrupts-reproduction-in-f1-female-mice
#20
Changqing Zhou, Liying Gao, Jodi A Flaws
Phthalates are used in a large variety of products, such as building materials, medical devices, and personal care products. Most previous studies on the toxicity of phthalates have focused on single phthalates, but it is also important to study the effects of phthalate mixtures because humans are exposed to phthalate mixtures. Thus, we tested the hypothesis that prenatal exposure to an environmentally relevant phthalate mixture adversely affects female reproduction in mice. To test this hypothesis, pregnant CD-1 dams were orally dosed with vehicle (tocopherol-stripped corn oil) or a phthalate mixture (20 and 200μg/kg/day, 200 and 500mg/kg/day) daily from gestational day 10 to birth...
March 1, 2017: Toxicology and Applied Pharmacology
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