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https://www.readbyqxmd.com/read/29350585/isolation-of-active-coagulant-protein-from-the-seeds-of-strychnos-potatorum-a-potential-water-treatment-agent
#1
P Arunkumar, V Sadish Kumar, S Saran, Harsha Bindun, Suja P Devipriya
The application of natural coagulants for decentralized water treatment is gaining importance as a part of global sustainable initiative. This study focuses on the isolation of active coagulation components responsible for water clarification with respect to Strychnos potatorum seeds. The active coagulant components, protein and polysaccharide were successfully isolated, dialysed and subjected to gel permeation chromatography. The polysaccharide was isolated with the saline extraction method and characterized using FTIR and NMR spectroscopy...
January 19, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29350348/snf472-a-novel-inhibitor-of-vascular-calcification-could-be-administered-during-hemodialysis-to-attain-potentially-therapeutic-phytate-levels
#2
Joan Perelló, M Gómez, M D Ferrer, N Y Rodríguez, C Salcedo, J M Buades, M M Pérez, J V Torregrosa, E Martín, F Maduell
BACKGROUND: Cardiovascular calcification (CVC) is a major concern in hemodialysis (HD) and the loss of endogenous modulators of calcification seems involved in the process. Phytate is an endogenous crystallization inhibitor and its low molecular mass and high water solubility make it potentially dialyzable. SNF472 (the hexasodium salt of phytate) is being developed for the treatment of calciphylaxis and CVC in HD patients. We aimed to verify if phytate is lost during dialysis, and evaluate SNF472's behaviour during dialysis...
January 19, 2018: Journal of Nephrology
https://www.readbyqxmd.com/read/29350172/comparison-of-dialysate-and-plasma-ntprobnp-in-prediction-of-clinical-outcomes-of%C3%A2-diabetic-and-nondiabetic-peritoneal-dialysis-patients%C3%A2
#3
Suleyman Koz, Idris Sahin, Mansur Kayatas, Sema Tulay Koz
BACKGROUND: Plasma level of N-terminal pro-brain natriuretic peptide (P-NTproBNP) is a useful marker in prediction of mortality in peritoneal dialysis (PD) patients. However, the predictive value of spent dialysate counterpart (D-NTproBNP) of plasma NTproBNP on mortality and dropout is not known. MATERIALS AND METHODS: Simultaneous P-NTproBNP and D-NTproBNP assays were performed after an overnight dwell in 44 scheduled ambulatory PD patients. Patients were followed for ~ 47 months...
January 19, 2018: Clinical Nephrology
https://www.readbyqxmd.com/read/29349706/effect-of-the-combination-of-mephedrone-plus-ethanol-on-serotonin-and-dopamine-release-in-the-nucleus-accumbens-and-medial-prefrontal-cortex-of-awake-rats
#4
Raúl López-Arnau, Mario Buenrostro-Jáuregui, Jorge Camarasa, David Pubill, Elena Escubedo
Cathinones, such as mephedrone (Meph), are often co-abused with alcoholic drinks. In the present study, we investigated the combined effects of Meph plus ethanol (EtOH) on neurotransmitter release in the nucleus accumbens (NAc) and the medial prefrontal cortex (mPFC). A guide canula was stereotaxically implanted into either the NAc or the mPFC of male Sprague-Dawley rats. Seven days after surgery, a microdialysis probe was inserted and rats were administered saline, EtOH (1 g/kg, i.p.), Meph (25 mg/kg, s...
January 18, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29343697/effluent-and-serum-protein-n-glycosylation-is-associated-with-inflammation-and-peritoneal-membrane-transport-characteristics-in-peritoneal-dialysis-patients
#5
Evelina Ferrantelli, Karima Farhat, Agnes L Hipgrave Ederveen, Karli R Reiding, Robert H J Beelen, Frans J van Ittersum, Manfred Wuhrer, Viktoria Dotz
Mass spectrometric glycomics was used as an innovative approach to identify biomarkers in serum and dialysate samples from peritoneal dialysis (PD) patients. PD is a life-saving treatment worldwide applied in more than 100,000 patients suffering from chronic kidney disease. PD treatment uses the peritoneum as a natural membrane to exchange waste products from blood to a glucose-based solution. Daily exposure of the peritoneal membrane to these solutions may cause complications such as peritonitis, fibrosis and inflammation which, in the long term, lead to the failure of the treatment...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29341372/renal-transplantation-in-children-under-3%C3%A2-years-of-age-experience-from-a-single-center-study
#6
Yann Loiseau, Justine Bacchetta, Amna Klich, Bruno Ranchin, Delphine Demede, Audrey Laurent, Florent Baudin, Florentine Garaix, Pascal Roy, Pierre Cochat
RTx remains challenging in children under 3 years of age. This single-center study reviewed the medical records of children <3 years transplanted since 1987 (N = 32, Group 1). They were matched for donor type and RTx period with children aged 3-13 years (N = 32, Group 2) and 13-18 years (N = 32, Group 3). There were no between-group significant differences regarding distributions of gender, primary renal disease, proportion of dialysis before RTx, and growth (SDS). Compared to Groups 2 and 3, Group 1 had more peritoneal dialyses (P < ...
January 17, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29341167/the-influence-of-colloid-osmotic-pressure-on-hydrostatic-pressures-in-high-and-low-flux-hemodialyzers
#7
Daniel Schneditz, Georgios Sarikakis, Maria Kontodima, Notburga Sauseng
The aim of this study was to examine the relationship between hydrostatic trans-membrane pressure (TMPh ) and colloid osmotic pressure (COP) in low-flux (LF) and high-flux (HF) dialyzers. Hydrostatic pressures were measured in dialyzers distinguished by their ultrafiltration coefficient Kuf (16 and 85 mL/h/mm Hg) under constant dialysate flow and variable blood flow (Qb ) ranging from 0 to 400 mL/min using (i) alginate (70 kDa) dissolved in dialysate, (ii) diluted, undiluted, and concentrated plasma, or (iii) whole blood at different hematocrit, all in absence of ultrafiltration (UF)...
January 17, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29340313/treatment-of-severe-hyperkalemia-confronting-4-fallacies
#8
REVIEW
J Gary Abuelo
Severe hyperkalemia is a medical emergency that can cause lethal arrhythmias. Successful management requires monitoring of the electrocardiogram and serum potassium concentrations, the prompt institution of therapies that work both synergistically and sequentially, and timely repeat dosing as necessary. It is of concern then that, based on questions about effectiveness and safety, many physicians no longer use 3 key modalities in the treatment of severe hyperkalemia: sodium bicarbonate, sodium polystyrene sulfonate (Kayexalate [Concordia Pharmaceuticals Inc...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29339713/neuroprotective-effect-of-selective-antegrade-cerebral-perfusion-during-prolonged-deep-hypothermic-circulatory-arrest-cerebral-metabolism-evidence-in-a-pig-model
#9
Zhixian Tang, Mengya Liang, Guangxian Chen, Jian Rong, Jianping Yao, Zhen Chen, Xiao Yang, Zhongkai Wu
OBJECTIVE: The aim of this study was to elucidate the mechanism of cerebral injury and to evaluate selective antegrade cerebral perfusion (SACP) as a superior neuroprotective strategy for prolonged deep hypothermic circulatory arrest (DHCA). METHODS: Twelve pigs (6-8-week old) were randomly assigned to DHCA alone (n=6) and DHCA with SACP (n=6) at 18°C for 80 min groups. Serum S100 was determined using an immunoassay analyzer. The concentrations of cerebral dialysate glucose, lactate, pyruvate, glycerol, and glutamate were measured using a microdialysis analyzer...
January 2018: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29337813/heparin-free-regional-anticoagulation-there-are-significant-differences-between-citrate-containing-dialysate-and-regional-citrate-anticoagulation
#10
Jakob Gubensek, Jadranka Buturovic-Ponikvar
No abstract text is available yet for this article.
February 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29332604/the-effect-of-an-adenosine-a2a-agonist-on-intra-tumoral-concentrations-of-temozolomide-in-patients-with-recurrent-glioblastoma
#11
Sadhana Jackson, Jon Weingart, Edjah K Nduom, Thura T Harfi, Richard T George, Dorothea McAreavey, Xiaobu Ye, Nicole M Anders, Cody Peer, William D Figg, Mark Gilbert, Michelle A Rudek, Stuart A Grossman
BACKGROUND: The blood-brain barrier (BBB) severely limits the entry of systemically administered drugs including chemotherapy to the brain. In rodents, regadenoson activation of adenosine A2A receptors causes transient BBB disruption and increased drug concentrations in normal brain. This study was conducted to evaluate if activation of A2A receptors would increase intra-tumoral temozolomide concentrations in patients with glioblastoma. METHODS: Patients scheduled for a clinically indicated surgery for recurrent glioblastoma were eligible...
January 15, 2018: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/29330530/estimation-of-lean-body-mass-by-creatinine-kinetics-increases-the-prevalence-of-muscle-wasting-in-peritoneal-dialysis-patients-compared-to-bioimpedance
#12
Suree Yoowannakul, Andrew Davenport
Dialysis patients are at increased risk for muscle wasting, and time efficient screening tests are required for to allow for early detection. Creatinine kinetics have been advocated to estimate lean body mass (LBM) in peritoneal dialysis (PD) patients, and can be readily calculated in clinical practice from peritoneal dialysate effluent and urine collections. Bioimpedance is increasingly available, and we compared methods in 434 PD patients (55% men, 33.3% diabetics), mean age 55.2 ± 16.2 years. LBM was lower by creatinine kinetics (47...
January 12, 2018: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29328788/the-role-of-elastomeric-pumps-in-postoperative-analgesia-in-orthopaedics-and-factors-affecting-their-flow-rate
#13
Anthony Andreas Theodorides
Elastomeric pumps are mechanical devices composed of an elastomeric balloon reservoir into which the drug to be infused is stored, a protective casing (used by some manufacturers), a flow controller and a wound catheter. In orthopaedics they are used to provide continuous local infiltration analgesia. In this way patients rely less on other routes of analgesia and thus avoid their systemic side effects. Studies have shown good response to analgesia with these pumps for the first 24 hours but their benefit is not as clear at 48 and 72 hours...
December 2017: Journal of Perioperative Practice
https://www.readbyqxmd.com/read/29325671/evaluation-of-the-dialyser-inner-diameter-in-online-haemodiafiltration
#14
Francisco Maduell, Raquel Ojeda, Lara Belmar, Paula Munguía, Cristina Sango, Ana Isabel Martinez-Díaz, Marta Arias-Guillén, Manel Vera, Néstor Fontseré, Miquel Gómez, Lida Rodas, Nayra Rico
INTRODUCTION: Online haemodiafiltration (OL-HDF) has been associated with increased survival. To date, the influence of the inner diameter of the hollow fibres of the dialyser on convective volume has not been well established. The objective of the study was to evaluate the effect of increasing the inner diameter of the dialyser on the convective volume and removal capacity. MATERIAL AND METHODS: We included 16 patients in posdilutional OL-HDF with autosubstitution...
January 2018: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/29324792/critical-evaluation-of-colon-submucosal-microdialysis-in-awake-mobile-rats
#15
Norbert Cibicek, Jiri Ehrmann, Jitka Proskova, Rostislav Vecera
Sensors able to record large bowel physiology and biochemistry in situ in awake rodents are lacking. Microdialysis is a mini-invasive technique that may be utilized to continuously deliver or recover low-molecular substances from various tissues. In this experiment we evaluated the feasibility of in vivo microdialysis to monitor extracellular fluid chemistry in the descending colon submucosa of conscious, freely moving rodents. Following surgical implantation of a microdialysis probe, male Wistar rats were housed in metabolic cages where they were analgized and clinically followed for four days with free access to standard diet and water...
2018: PloS One
https://www.readbyqxmd.com/read/29315974/microdialysis-sampling-combined-with-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry-for-the-determination-of-geniposide-in-dialysate-of-joint-cavities-in-adjuvant-arthritis-rats
#16
Wen-Yu Wang, Wei Wang, Hong Wu, Shu-Ping Li, Rong Wang, Li Dai, Zheng-Rong Zhang, Jun Fu, Ran Deng, Feng Li
RATIONALE: Microdialysis has been used to detect the concentrations of drugs in tissues. Geniposide (GE), an iridoid glycoside compound, is the main bioactive component of Gardenia jasminoides Ellis fruit. We previously demonstrated that GE could control the activity of cytokines and reduce levels of inflammation in adjuvant arthritis (AA) rats, but the topic of concentration changes over time in the joint synovia of AA is scarcely studied. METHODS: In this study, microdialysis technique combined with ultra-high-performance liquid chromatography-electrospray ionization coupled with tandem mass spectrometry (UHPLC-ESI-MS/MS) was set up and confirmed to assay GE in the dialysate of the joint cavity in AA rats...
January 5, 2018: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29314721/peritoneal-protein-losses-depend-on-more-than-just-peritoneal-dialysis-modality-and-peritoneal-membrane-transporter-status
#17
Suree Yoowannakul, Lauren S Harris, Andrew Davenport
Peritoneal protein clearance (PPCl) depends upon vascular supply and size selective permeability. Some previous reports suggested PPCl can distinguish fast peritoneal membrane transport due to local or systemic inflammation. However, as studies have been discordant, we wished to determine factors associated with an increased PPCl. Consecutive patients starting peritoneal dialysis (PD) who were peritonitis-free were studied. Data included a baseline peritoneal equilibration test (PET), measurement of dialysis adequacy, 24-h dialysate PPCl and body composition measured by multifrequency bioimpedance...
January 4, 2018: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/29311199/steady-state-pharmacokinetics-of-oral-ciprofloxacin-in-continuous-cycling-peritoneal-dialysis-patients-brief-report
#18
Colin Lee, Sandra A N Walker, Lesley Palmay, Scott E Walker, Sheldon Tobe, Andrew Simor
Steady-state pharmacokinetics of oral ciprofloxacin in 3 continuous cycling peritoneal dialysis (CCPD) outpatients given ciprofloxacin 750 mg b.i.d. for 5 doses was determined. Mean steady-state maximum serum concentration and half-life were 4.4 ± 1.5 mg/L and 10.3 ± 2.6 hours, respectively. Mean maximum dialysate concentration in the daytime long dwell and overnight continuous cycling dwell were 7.4 ± 1.2 mg/L and 3.3 ± 1.2 mg/L, respectively. Oral ciprofloxacin 750 mg b.i.d. may be reasonable for bloodstream and peritoneal infections caused by susceptible bacteria in CCPD patients...
January 2018: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/29311069/meropenem-vaborbactam-single-dose-pharmacokinetics-and-safety-in-subjects-with-chronic-renal-impairment
#19
Christopher M Rubino, Sujata M Bhavnani, Jeffery S Loutit, Brooke Lohse, Michael N Dudley, David C Griffith
Vaborbactam is a member of a new class of β-lactamase inhibitors with inhibitory activity against serine carbapenemases (e.g. Klebsiella pneumoniae carbapenemase) that has been developed in combination with meropenem. Pharmacokinetics of the combination were evaluated in 41 subjects with chronic renal impairment in a Phase 1, open-label, single-dose study. Subjects were assigned to one of five groups based on renal function: normal (creatinine clearance ≥90 mL/min), mild (estimated glomerular filtration rate [eGFR] 60-89 mL/min/1...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29305668/iloprost-affects-macrophage-activation-and-ccl2-concentrations-in-a-microdialysis-model-in-rats
#20
Kamel Alkhatib, Tina M Poseno, Alda Diaz Perez, Jeannine M Durdik, Julie A Stenken
PURPOSE: The hypothesis that locally-released iloprost, a synthetic prostacyclin analog, affects macrophage phenotype at a microdialysis implant in the subcutaneous space of rats was tested. Macrophage activation towards alternatively-activated phenotypes using pharmaceutical release is of interest to improve integration of implants and direct the foreign body reaction toward a successful outcome. METHODS: Macrophage cell culture was used to test iloprost macrophage activation in vitro...
January 5, 2018: Pharmaceutical Research
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