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https://www.readbyqxmd.com/read/28638325/dopamine-noradrenaline-and-differences-in-sexual-behavior-between-roman-high-and-low-avoidance-male-rats-a-microdialysis-study-in-the-medial-prefrontal-cortex
#1
Fabrizio Sanna, Jessica Bratzu, Maria A Piludu, Maria G Corda, Maria R Melis, Osvaldo Giorgi, Antonio Argiolas
Roman High- (RHA) and Low-Avoidance (RLA) outbred rats, which differ for a respectively rapid vs. poor acquisition of the active avoidance response in the shuttle-box, display differences in sexual activity when put in the presence of a sexually receptive female rat. Indeed RHA rats show higher levels of sexual motivation and copulatory performance than RLA rats, which persist also after repeated sexual activity. These differences have been correlated to a higher tone of the mesolimbic dopaminergic system of RHA rats vs...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28633184/peritoneal-dialysis-catheter-position-evaluated-by-ultrasound-can-it-replace-abdomen-x-ray-in-patients-presenting-catheter-misplacement
#2
Matthias Zeiler, Luca Zanoli, Rosalia Viviana Scarfia, Stefano Santarelli, Antonio Granata
Background Malfunction of the peritoneal dialysis catheter is frequently caused by dislocation. The diagnostic approach is classically based on abdomen X-ray together with detailed case history and physical examination. Despite being rarely applied in clinical practice to evaluate catheter misplacement, ultrasound is a noninvasive, radiation-free technique that is potentially useful also to explore reasons for catheter malfunction. Consequently, we aimed to evaluate the diagnostic accuracy of ultrasound to identify peritoneal catheter misplacement...
June 20, 2017: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/28608933/ultrapure-versus-standard-dialysate-a-cost-benefit-analysis
#3
EDITORIAL
Ashish Upadhyay, Paweena Susantitaphong, Bertrand L Jaber
Low-level bacterial and endotoxin contamination of water used to generate dialysate propagates chronic inflammation in patients with a wide-range of potential adverse consequences, including erythropoietin hyporesponsiveness. Advancements in hemodialysis systems now allow for the generation of ultrapure dialysate that has lower bacterial and endotoxin levels than the standard dialysate. The cost associated with ultrapure dialysate is thought to be a major barrier to its widespread adoption. In this report, we conduct a cost-benefit analysis examining the excess cost of generating ultrapure dialysate and the potential cost saving from a lower erythropoietin dose requirement...
June 13, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28603026/widespread-reduction-of-dopamine-cell-bodies-and-terminals-in-adult-rats-exposed-to-a-low-dose-regimen-of-mdma-during-adolescence
#4
Cristina Cadoni, Augusta Pisanu, Nicola Simola, Lucia Frau, Pier Francesca Porceddu, Silvia Corongiu, Christian Dessì, Annesha Sil, Antonio Plumitallo, Jadwiga Wardas, Gaetano Di Chiara
Although MDMA (3,4-methylendioxymethamphetamine, ecstasy) neurotoxicity in serotonin neurons is largely recognized in a wide variety of species including man, neurotoxicity in dopamine (DA) neurons is thought to be species-specific. MDMA is mainly consumed by adolescents, often in conjunction with caffeine (Energy Drinks) and this association has been reported to exacerbate MDMA toxic effects. In order to model these aspects of MDMA use, vis-à-vis their impact on DA neurons, we investigated the effects of adolescent exposure to low doses of MDMA (5 mg/kg for 10 days), alone or in combination with caffeine (10 mg/kg) on neuronal and functional DA indices and on recognition memory in adult rats...
June 8, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28601713/a-laplace-transform-based-technique-for-solving-multiscale-and-multidomain-problems-application-to-a-countercurrent-hemodialyzer-model
#5
Laurent Simon
An integral-based method was employed to evaluate the behavior of a countercurrent hemodialyzer model. Solute transfer from the blood into the dialysate was described by writing mass balance equations over a section of the device. The approach provided Laplace transform concentration profiles on both sides of the membrane. Applications of the final value theorem led to the development of the effective time constants and steady-state concentrations in the exit streams. Transient responses were derived by a numerical inversion algorithm...
June 4, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28601326/direct-peritoneal-resuscitation-improves-mesenteric-perfusion-by-nitric-oxide-dependent-pathways
#6
Sina Khaneki, Amanda R Jensen, Natalie A Drucker, Troy A Markel
BACKGROUND: Direct peritoneal resuscitation (DPR) has been shown to increase survival after intestinal ischemia and reperfusion injury (I/R). We have previously appreciated that minimum essential medium (MEM), a synthetic cell culture medium with bovine serum, glutamine, and antibiotics, contributes to these benefits. We hypothesized that (1) DPR using MEM as a dialysate would increase mesenteric perfusion, improve intestinal mucosal injury, and limit intestinal and hepatic inflammation after intestinal I/R and (2) these improvements would be dependent on endothelial nitric oxide pathways...
June 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28593881/differential-hemoglobin-a-sequestration-between-hemodialysis-modalities
#7
Uzma Naseeb, Shamshad Zarina, Theres Jägerbrink, Jawed Shafqat, Hans Jörnvall, Jonas Axelsson
This report evaluates plasma protein patterns, dialysates and protein analysis of used dialysis membranes from the same patient under hemodialysis in three separate modalities, using high-flux membranes in concentration-driven transport (HD), convection-driven hemofiltration (HF) and combined hemodialfiltration (HDF). The plasma protein changes induced by each of the three dialysis modalities showed small differences in proteins identified towards our previous plasma analyses of chronic kidney disease (CKD) patients...
April 19, 2017: Biomolecular Concepts
https://www.readbyqxmd.com/read/28589873/human-cytomegalovirus-micrornas-are-carried-by-virions-and-dense-bodies-and-are-delivered-to-target-cells
#8
Abdul-Aleem Mohammad, Helena Costa, Natalia Landázuri, Weng-Onn Lui, Kjell Hultenby, Afsar Rahbar, Koon-Chu Yaiw, Cecilia Söderberg-Nauclér
Human cytomegalovirus (HCMV) infection results in the production of virions, dense bodies (DBs) and non-infectious enveloped particles, all of which incorporate proteins and RNAs that can be transferred to host cells. Here, we investigated whether virions and DBs also carry microRNAs (miRNAs) and assessed their delivery and functionality in cells. Human lung fibroblasts (MRC-5) were infected with the HCMV strain AD169, and conditioned cell culture medium was collected and centrifuged. The pellets were treated with RNase-ONE, and the virions and DBs were purified with a potassium tartrate-glycerol gradient and dialysed...
May 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28583107/the-impact-of-peritoneal-dialysis-related-peritonitis-on-mortality-in-peritoneal-dialysis-patients
#9
Hongjian Ye, Qian Zhou, Li Fan, Qunying Guo, Haiping Mao, Fengxian Huang, Xueqing Yu, Xiao Yang
BACKGROUND: Results concerning the association between peritoneal dialysis-related peritonitis and mortality in peritoneal dialysis patients are inconclusive, with one potential reason being that the time-dependent effect of peritonitis has rarely been considered in previous studies. This study aimed to evaluate whether peritonitis has a negative impact on mortality in a large cohort of peritoneal dialysis patients. We also assessed the changing impact of peritonitis on patient mortality with respect to duration of follow-up...
June 5, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28578037/bioaccessibility-of-calcium-iron-and-magnesium-in-residues-of-citrus-and-characterization-of-macronutrients
#10
Joyce Grazielle Siqueira Silva, Ana Paula Rebellato, Ralf Greiner, Juliana Azevedo Lima Pallone
The aim of this study was to estimate bioaccessibility of Ca, Fe and Mg in residues of orange, lime, and their mixture, in order to evaluate the effects of cooking in water on mineral bioaccessibility and also to determine the composition of macronutrients and myo-inositol phosphate content. The citrus samples contained on average 9.53g/100 g moisture, 6.09g/100 g protein, 3.23g/100g ash, 3.15g/100g lipids, 34.26g/100g insoluble fiber, 27.88g/100g soluble fiber and 25.64g/100g carbohydrates. The percentage of soluble and dialyzable minerals ranged from 19...
July 2017: Food Research International
https://www.readbyqxmd.com/read/28570592/a-prospective-study-of-the-demographics-management-and-outcome-of-patients-with-acute-kidney-injury-in-cape-town-south-africa
#11
Thandiwe A L Dlamini, Peter J Heering, Tawanda Chivese, Brian Rayner
AIM: To study the demographics and outcome of acute kidney injury (AKI) at Groote Schuur Hospital, Cape Town, South Africa. METHODS AND FINDINGS: A prospective observational study of AKI fulfilling the Kidney Disease: Improving Global Outcomes definition, from 8 July 2012 to 8 July 2013. Ethics approval was granted by the University of Cape Town Human Research Ethics Committee. Consent was waived because patient data was de-identified and patient management was not adversely affected by the study...
2017: PloS One
https://www.readbyqxmd.com/read/28560615/effect-of-continuous-dialysis-on-blood-ph-in-acidemic-hypercapnic-animals-with-severe-acute-kidney-injury-a-randomized-experimental-study-comparing-high-vs-low-bicarbonate-affluent
#12
Thiago Gomes Romano, Luciano Cesar Pontes Azevedo, Pedro Vitale Mendes, Eduardo Leite Vieira Costa, Marcelo Park
BACKGROUND: Controlling blood pH during acute ventilatory failure and hypercapnia in individuals suffering from severe acute kidney injury (AKI) and undergoing continuous renal replacement therapy (CRRT) is of paramount importance in critical care settings. In this situation, the optimal concentration of sodium bicarbonate in the dialysate is still an unsolved question in critical care since high concentrations may worsen carbon dioxide levels and low concentrations may not be as effective in controlling pH...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28554992/dialysis-procedures-alter-metabolic-conditions
#13
REVIEW
Bernd Stegmayr
A progressive chronic kidney disease results in retention of various substances that more or less contribute to dysfunction of various metabolic systems. The accumulated substances are denominated uremic toxins. Although many toxins remain undetected, numerous newly defined toxins participate in the disturbance of food breakdown. In addition, toxic effects may downregulate other pathways, resulting in a reduced ability of free fatty acid breakdown by lipoprotein lipase (LPL) and hepatic lipase (HL). Dialysis may even worsen metabolic functions...
May 27, 2017: Nutrients
https://www.readbyqxmd.com/read/28554171/clearance-of-sclerostin-osteocalcin-fibroblast-growth-factor-23-and-osteoprotegerin-by-dialysis
#14
Nicholas Carlson, Ole H Mortensen, Mette Axelsen, Robert S Pedersen, James G Heaf
INTRODUCTION: Fibroblast growth factor (FGF23), sclerostin, osteocalcin, and osteoprotegerin are important factors that control mineral bone metabolism. End-stage renal disease is associated with the pronounced dysregulation of mineral bone metabolism; however, the impact and clearance of mineral bone metabolism factors during dialysis remain largely undescribed. METHODS: In a cross-sectional study, 10 chronic hemodialysis patients were treated with hemodialysis for 8 h using a high-flux filter and a dialysate bath of 50% calculated total body water continuously recycled at a rate of 500 mL/min...
2017: Blood Purification
https://www.readbyqxmd.com/read/28542228/alteration-of-membrane-complement-regulators-is-associated-with-transporter-status-in-patients-on-peritoneal-dialysis
#15
Daniel Kitterer, Dagmar Biegger, Stephan Segerer, Niko Braun, M Dominik Alscher, Joerg Latus
INTRODUCTION: A growing body of evidence from animal models and cell culture studies indicate an important role of a local regulatory complement system (CS) in peritoneal injury during peritoneal dialysis (PD). We investigated the expression of the local regulatory CS (reflected by CD46,CD55,CD59) in the peritoneal tissue of patients with different membrane function characteristics. PATIENTS AND METHODS: Biopsies from the parietal peritoneum were taken from 24 patients on PD, 22 uremic patients prior to PD...
2017: PloS One
https://www.readbyqxmd.com/read/28540893/comparison-of-intradialytic-hemodynamic-tolerance-between-on-line-hemodiafiltration-and-acetate-free-biofiltration-with-profiled-potassium-dialysate-concentration
#16
George Kosmadakis, Enrique Da Costa Correia, Frederic Somda, Didier Aguilera
Intradialytic hypotensive episodes are deleterious for hemodialysis (HD) patients. Acetate-free biofiltration with profiled potassium (AFBK) dialysate concentration may improve their cardiovascular stability. The aim of the present crossover study was to compare intradialytic hemodynamic tolerance and biological parameters between online hemodiafiltration (olHDF) and AFBK. Ten frail HD patients (8 males) with a mean age of 66.71- ± 12.31 years were studied for three months on olHDF and AFBK. There was a significant reduction of the hypotensive episodes during the AFBK period compared to the olHDF period...
May 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28540204/advanced-wasting-in-peritoneal-dialysis-patients
#17
Zhi Xu, Glen H Murata, Robert H Glew, Yijuan Sun, Darlene Vigil, Karen S Servilla, Antonios H Tzamaloukas
AIM: To identify patients with end-stage renal disease treated by peritoneal dialysis (PD) who had zero body fat (BF) as determined by analysis of body composition using anthropometric formulas estimating body water (V) and to compare nutritional parameters between these patients and PD patients whose BF was above zero. METHODS: Body weight (W) consists of fat-free mass (FFM) and BF. Anthropometric formulas for calculating V allow the calculation of FFM as V/0.73, where 0...
May 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28540201/cold-dialysis-and-its-impact-on-renal-patients-health-an-evidence-based-mini-review
#18
REVIEW
Giorgos K Sakkas, Argiro A Krase, Christoforos D Giannaki, Christina Karatzaferi
Chronic renal disease is associated with advanced age, diabetes, hypertension, obesity, musculoskeletal problems and cardiovascular disease, the latter being the main cause of mortality in patients receiving haemodialysis (HD). Cooled dialysate (35 °C-36 °C) is recently employed to reduce the incidence of intradialytic hypotension in patients on chronic HD. The studies to date that have evaluated cooled dialysate are limited, however, data suggest that cooled dialysate improves hemodynamic tolerability of dialysis, minimizes hypotension and exerts a protective effect over major organs including the heart and brain...
May 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28535530/mathematical-model-of-potassium-profiling-in-chronic-dialysis
#19
Mauro Ursino, Gabriele Donati
Potassium balance is a difficult task in hemodialysis: low potassium in the dialysate is associated with a high risk of sudden cardiac death, whereas excessive dialysate potassium may provoke insufficient removal and hyperkalemia. A better understanding of the problem can be achieved with the use of mathematical models of solute kinetics. This study is aimed at presenting an improved model of solute kinetics and fluid shifts during hemodialysis. It comprises a 2-compartment (intracellular and extracellular) description of sodium, potassium, and urea, including volume fluid shifts induced by osmotic forces...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28532509/barriers-and-facilitators-to-healthcare-professional-behaviour-change-in-clinical-trials-using-the-theoretical-domains-framework-a-case-study-of-a-trial-of-individualized-temperature-reduced-haemodialysis
#20
Justin Presseau, Brittany Mutsaers, Ahmed A Al-Jaishi, Janet Squires, Christopher W McIntyre, Amit X Garg, Manish M Sood, Jeremy M Grimshaw
BACKGROUND: Implementing the treatment arm of a clinical trial often requires changes to healthcare practices. Barriers to such changes may undermine the delivery of the treatment making it more likely that the trial will demonstrate no treatment effect. The 'Major outcomes with personalized dialysate temperature' (MyTEMP) is a cluster-randomised trial to be conducted in 84 haemodialysis centres across Ontario, Canada to investigate whether there is a difference in major outcomes with an individualized dialysis temperature (IDT) of 0...
May 22, 2017: Trials
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