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https://www.readbyqxmd.com/read/28535530/mathematical-model-of-potassium-profiling-in-chronic-dialysis
#1
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/28535520/phosphate-in-chronic-kidney-disease-progression
#2
Mario Cozzolino, Denis Foque, Paola Ciceri, Andrea Galassi
A direct and independent association between serum phosphate (P) levels and mortality has been reported. High circulating P concentrations, still within the normal range, was associated with unfavourable outcomes in normal subjects as well as in chronic kidney disease (CKD) patients. Experimental data support the notion that P overload may hamper survival expectancy, directly inducing vascular, skeletal, and renal ageing. The balance of P results from dietary intake, intestinal absorption, glomerular filtration, tubular resorption, and hormonal asset...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28535516/citrate-anticoagulation-during-continuous-renal-replacement-therapy
#3
Davide Ricci, Laura Panicali, Maria Grazia Facchini, Elena Mancini
During extracorporeal dialysis, some anticoagulation strategy is necessary to prevent the coagulation of blood. Heparin has historically been used as an anticoagulant because of its efficacy combined with low cost. However, a variable incidence of hemorrhagic complications (5-30%) has been documented in patients undergoing continuous renal replacement therapy (CRRT) with heparin as an anticoagulant. Citrate has anticoagulation properties secondary to its ability to chelate calcium, which is necessary for the coagulation cascade...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28535449/the-center-for-epidemiological-studies-depression-scale-ces-d-measurement-equivalence-across-gender-groups-in-hispanic-college-students
#4
Consuelo Arbona, Andrea Burridge, Norma Olvera
BACKGROUND: This study examined among Hispanic college students the factor structure and gender measurement invariance of the Center for Epidemiologic Studies Depression (CES-D) scale. The CES-D's original 20 item four-factor model was compared to a recently proposed 14 item, three-factor model. METHODS: Participants included 858 Hispanic undergraduates at an ethnically diverse, major research, urban, public university in the Southwest United States (U.S.). Multigroup confirmatory factor analyses (CFAs) and structural equation modeling were used to examine the factor structure, gender invariance, and construct validity of the CES-D scores...
May 14, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28535436/microcystin-lr-induces-changes-in-the-gaba-neurotransmitter-system-of-zebrafish
#5
Wei Yan, Li Li, Guangyu Li, Sujuan Zhao
It has been reported that exposure to microcystins altered adult zebrafish swimming performance parameters, but the possible mechanisms of action remain unknown. Neuronal activity depends on the balance between the number of excitatory and inhibitory processes which are associated with neurotransmitters. In the present study, zebrafish embryos (5 d post-fertilization) were exposed to 0, 0.3, 3 and 30μg/L (microcystin-LR) MCLR for 90day until reaching sexual maturity. To investigate the effects of MCLR on the neurotransmitter system, mRNA levels involved in amino acid g-aminobutyric acid (GABA) and glutamate metabolic pathways were tested using quantitative real-time PCR...
May 15, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28535378/thada-regulates-the-organismal-balance-between-energy-storage-and-heat-production
#6
Alexandra Moraru, Gulcin Cakan-Akdogan, Katrin Strassburger, Matilda Males, Sandra Mueller, Markus Jabs, Michael Muelleder, Martin Frejno, Bart P Braeckman, Markus Ralser, Aurelio A Teleman
No abstract text is available yet for this article.
May 22, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28535119/comparison-of-effectiveness-and-safety-of-treatment-with-apixaban-vs-other-oral-anticoagulants-among-elderly-nonvalvular-atrial-fibrillation-patients
#7
Steven Deitelzweig, Xuemei Luo, Kiran Gupta, Jeffrey Trocio, Jack Mardekian, Tammy Curtice, Melissa Lingohr-Smith, Brandy Menges, Jay Lin
OBJECTIVE: To compare the risk of stroke/systemic embolism (S/SE) and major bleeding (MB) of elderly (≥65 years of age) nonvalvular atrial fibrillation (NVAF) patients initiating apixaban vs. rivaroxaban, dabigatran, or warfarin. METHODS: NVAF patients with Medicare Advantage coverage in the US initiating oral anticoagulants (OACs, index event) were identified from the Humana database (1/1/2013-9/30/2015) and grouped into cohorts depending on OAC initiated. Propensity score matching (PSM), 1:1, was conducted among patients treated with apixaban vs...
May 23, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28535099/do-sideline-concussion-assessments-predict-subsequent-neurocognitive-impairment-after-sport-related-concussion
#8
Alicia Sufrinko, Jamie McAllister-Deitrick, Melissa Womble, Anthony Kontos
CONTEXT:   Comprehensive, multi-domain assessment is the standard of care after sport-related concussion. However, the relationship between performance on sideline concussion-assessment tools and in-office computerized neurocognitive testing has received little attention, and the prognostic utility of sideline measures is unknown. OBJECTIVE:   To evaluate concurrent impairment on commonly used concussion measures 24 to 48 hours postinjury while also determining the predictive utility of sideline measures on computerized neurocognitive testing in the acute to subacute recovery periods postinjury...
May 23, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28535097/comparative-effectiveness-of-plantar-massage-techniques-on-postural-control-in-those-with-chronic-ankle-instability
#9
Erik A Wikstrom, Kyeongtak Song, Ashley Lea, Nastassia Brown
CONTEXT:   One of the major concerns after an acute lateral ankle sprain is the potential for development of chronic ankle instability (CAI). The existing research has determined that clinician-delivered plantar massage improves postural control in those with CAI. However, the effectiveness of self-administered treatments and the underlying cause of any improvements remain unclear. OBJECTIVES:   To determine (1) the effectiveness of a self-administered plantar-massage treatment in those with CAI as well and (2) whether the postural-control improvements were due to the stimulation of the plantar cutaneous receptors...
May 23, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28535008/how-much-medium-do-you-use-for-cell-culture-medium-volume-influences-mineralization-and-osteoclastogenesis-in%C3%A2-vitro
#10
Yoshitaka Yoshimura, Takashi Kikuiri, Tomokazu Hasegawa, Mino Matsuno, Hajime Minamikawa, Yoshiaki Deyama, Kuniaki Suzuki
Bone is maintained by a balance between bone formation and resorption. This remodeling is controlled by a wide variety of systemic and local factors including hormones, cytokines and mechanical stresses. The present in vitro study examined the impact of medium volume, using 0.4, 0.6, 0.8, 1.0, 1.5 and 2.0 ml/well in a 24‑well plate, on the differentiation of osteoblasts and osteoclasts. There were no differences in the alkaline phosphatase activity of osteoblasts amongst the groups; however, the area of mineral deposition was decreased in a media volume‑dependent manner...
May 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28534874/shifting-brain-inhibitory-balance-and-connectivity-of-the-prefrontal-cortex-of-adults-with-autism-spectrum-disorder
#11
L A Ajram, J Horder, M A Mendez, A Galanopoulos, L P Brennan, R H Wichers, D M Robertson, C M Murphy, J Zinkstok, G Ivin, M Heasman, D Meek, M D Tricklebank, G J Barker, D J Lythgoe, R A E Edden, S C Williams, D G M Murphy, G M McAlonan
Currently, there are no effective pharmacologic treatments for the core symptoms of autism spectrum disorder (ASD). There is, nevertheless, potential for progress. For example, recent evidence suggests that the excitatory (E) glutamate and inhibitory (I) GABA systems may be altered in ASD. However, no prior studies of ASD have examined the 'responsivity' of the E-I system to pharmacologic challenge; or whether E-I modulation alters abnormalities in functional connectivity of brain regions implicated in the disorder...
May 23, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28534820/antioxidant-properties-of-probiotic-bacteria
#12
REVIEW
Yang Wang, Yanping Wu, Yuanyuan Wang, Han Xu, Xiaoqiang Mei, Dongyou Yu, Yibing Wang, Weifen Li
Oxidative stress defines a condition in which the prooxidant-antioxidant balance in the cell is disturbed, resulting in DNA hydroxylation, protein denaturation, lipid peroxidation, and apoptosis, ultimately compromising cells' viability. Probiotics have been known for many beneficial health effects, and the consumption of probiotics alone or in food shows that strain-specific probiotics can present antioxidant activity and reduce damages caused by oxidation. However, the oxidation-resistant ability of probiotics, especially the underling mechanisms, is not properly understood...
May 19, 2017: Nutrients
https://www.readbyqxmd.com/read/28534776/globally-consistent-wrinkle-aware-shading-of-line-drawings
#13
Pradeep Kumar Jayaraman, Chi-Wing Fu, Jianmin Zheng, Xueting Liu, Tien-Tsin Wong
Shading is a tedious process for artists involved in 2D cartoon and manga production given the volume of contents that the artists have to prepare regularly over tight schedule. While we can automate shading production with the presence of geometry, it is impractical for artists to model the geometry for every single drawing. In this work, we aim to automate shading generation by analyzing the local shapes, connections, and spatial arrangement of wrinkle strokes in a clean line drawing. By this, artists can focus more on the design rather than the tedious manual editing work, and experiment with different shading effects under different conditions...
May 17, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28534455/effect-of-modern-surgical-treatment-on-the-inflammatory-anti-inflammatory-balance-in-patients-with-obstructive-sleep-apnoea
#14
M Binar, T M Akcam, O Karakoc, R I Sagkan, U Musabak, M Gerek
OBJECTIVE: To investigate the inflammatory/anti-inflammatory cytokine balance - T helper 1/T helper 2 ratios - in obstructive sleep apnoea patients, before and after treatment. METHODS: Twenty-eight patients received continuous positive airway pressure treatment and 29 patients who could not tolerate continuous positive airway pressure were scheduled for surgery. Serum levels of interleukins 2, 4 and 10, tumour necrosis factor-alpha, and interferon gamma were analysed by enzyme-linked immunosorbent assays before and three months after treatment...
May 23, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28534047/polysomnographic-heart-rate-variability-indices-and-atrial-ectopy-associated-with-incident-atrial-fibrillation-risk-in-older-community-dwelling-men
#15
Dileep Raman, Farhad Kaffashi, Li-Yung Lui, William H Sauer, Susan Redline, Peter Stone, Peggy M Cawthon, Katie L Stone, Kristine E Ensrud, Sonia Ancoli-Israel, Kenneth Loparo, Reena Mehra
BACKGROUND: Autonomic dysfunction contributes to atrial fibrillation (AF). OBJECTIVE: We hypothesized that polysomnogram (PSG)-based heart rate variability (HRV) autonomic function biomarkers are associated with incident AF and these associations are modified by measures of sleep disordered breathing (SDB). METHODS: 2350 participants of a multi-center prospective study (Outcomes of Sleep Disorders in Older Men Study) without baseline AF underwent sleep studies with incident adjudicated AF follow up (8...
May 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/28534026/how-cells-can-control-their-size-by-pumping-ions
#16
Alan R Kay
The ability of all cells to set and regulate their size is a fundamental aspect of cellular physiology. It has been known for sometime but not widely so, that size stability in animal cells is dependent upon the operation of the sodium pump, through the so-called pump-leak mechanism (Tosteson and Hoffman, 1960). Impermeant molecules in cells establish an unstable osmotic condition, the Donnan effect, which is counteracted by the operation of the sodium pump, creating an asymmetry in the distribution of Na(+) and K(+) staving off water inundation...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28533987/exoskeleton-may-influence-the-internal-body-temperatures-of-neotropical-dung-beetles-col-scarabaeinae
#17
Valentina Amore, Malva I M Hernández, Luis M Carrascal, Jorge M Lobo
The insect exoskeleton is a multifunctional coat with a continuum of mechanical and structural properties constituting the barrier between electromagnetic waves and the internal body parts. This paper examines the ability of beetle exoskeleton to regulate internal body temperature considering its thermal permeability or isolation to simulated solar irradiance and infrared radiation. Seven Neotropical species of dung beetles (Coleoptera, Scarabaeinae) differing in colour, surface sculptures, size, sexual dimorphism, period of activity, guild category and altitudinal distribution were studied...
2017: PeerJ
https://www.readbyqxmd.com/read/28533921/thiol-disulphide-homeostasis-in-celiac-disease
#18
Mustafa Kaplan, Ihsan Ates, Mahmut Yuksel, Yasemin Ozderin Ozin, Murat Alisik, Ozcan Erel, Ertugrul Kayacetin
AIM: To determine dynamic thiol/disulphide homeostasis in celiac disease and to examine the associate with celiac autoantibodies and gluten-free diet. METHODS: Seventy three patients with celiac disease and 73 healthy volunteers were enrolled in the study. In both groups, thiol/disulphide homeostasis was examined with a new colorimetric method recently developed by Erel and Neselioglu. RESULTS: In patients with celiac disease, native thiol (P = 0...
May 6, 2017: World Journal of Gastrointestinal Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28533817/mosaicism-for-structural-non-centromeric-autosomal-rearrangements-in-disease-defined-carriers-sex-differences-in-the-rearrangements-profile-and-maternal-age-distributions
#19
REVIEW
Natalia V Kovaleva, Philip D Cotter
BACKGROUND: Mosaicism for an autosomal structural rearrangement (Rea) associated with clinical manifestation of chromosomal imbalance is rare. Consequently, there is a lack of basic epidemiological characterization of this kind of mosaicism, such as population rate, cytogenetic profile of Reas involved, maternal age distribution, and sex (male to female) ratio among Rea carriers. The objectives of the present study were: (i) determination of the Rea profile in clinically affected individuals, (ii) comparative analysis of the cytogenetic profile and involvement of single chromosomes to rearrangements in affected and previously reported asymptomatic carriers, (iii) analysis of the male/female ratio in carriers of various types of Rea, and, (iv) examination of parental ages distributions according to carriers' sex...
2017: Molecular Cytogenetics
https://www.readbyqxmd.com/read/28533810/tc003132-is-essential-for-the-follicle-stem-cell-lineage-in-telotrophic-tribolium-oogenesis
#20
Matthias Teuscher, Nadi Ströhlein, Markus Birkenbach, Dorothea Schultheis, Michael Schoppmeier
BACKGROUND: Stem cells are undifferentiated cells with a potential for self-renewal, which are essential to support normal development and homeostasis. To gain insight into the molecular mechanisms underlying adult stem cell biology and organ evolution, we use the telotrophic ovary of the beetle Tribolium. To this end, we participated in a large-scale RNAi screen in the red flour beetle Tribolium, which identified functions in embryonic and postembryonic development for more than half of the Tribolium genes...
2017: Frontiers in Zoology
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