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#1
Moshe Shiller, Vladimir Gens, Ganem Kassem, Wisam Sbeit
BACKGROUND: The relationships between physicians and patients are very complex. One of their principles is to receive informed consent from the patient. This principle facilitates patient autonomy. The physician must explain to the patient: his condition, treatment alternatives, stating the advantages and disadvantages of each option, to enable the patient to choose between them. There are various attitudes towards the health system as a result of different cultures in different societies...
May 2017: Harefuah
https://www.readbyqxmd.com/read/28551866/sequence-and-functional-analysis-of-intestinal-alkaline-phosphatase-from-lateolabrax-maculatus
#2
Minglin Wu, Jiaqi Wang, Zhipeng Wang, Jinliang Zhao, Yuting Hu, Xiaowu Chen
Alkaline phosphatases (Alps) belong to a class of phosphate transferases that dephosphorylate lipopolysaccharide (LPS), adenosine triphosphate, and nucleotides. In this study, a 1874-base pair (bp) intestinal alp cDNA sequence was cloned from Lateolabrax maculatus and designated as Lm-alpi. It contained a 1611 bp open reading frame which encoded a protein with 537 amino acids. Protein sequence alignment showed that Lm-AlpI shared 29.8-79.8% identity with its homologs. Lm-AlpI catalytic sites contained three metal ion sites (two Zn(2+) and one Mg(2+)), referring to D73, H184, D348, H349, H352, H464, D389, and H390 residues, which are essential for enzymatic activity and conservation in different organisms...
May 28, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28551793/mitochondria-in-structural-and-functional-cardiac-remodeling
#3
Natalia Torrealba, Pablo Aranguiz, Camila Alonso, Beverly A Rothermel, Sergio Lavandero
The heart must function continuously as it is responsible for both supplying oxygen and nutrients throughout the entire body, as well as for the transport of waste products to excretory organs. When facing either a physiological or pathological increase in cardiac demand, the heart undergoes structural and functional remodeling as a means of adapting to increased workload. These adaptive responses can include changes in gene expression, protein composition, and structure of sub-cellular organelles involved in energy production and metabolism...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28551789/mitochondria-and-cardiac-hypertrophy
#4
Heberty di Tarso Fernandes Facundo, Robert Eli Brainard, Francisco Rodrigo de Lemos Caldas, Aline Maria Brito Lucas
Cardiac tissue responds to long-term hemodynamic load through initiation of a hypertrophic remodeling program. Importantly, if not counteracted this response will eventually lead to organ failure. Cardiac hypertrophic adaptations are complex, and involve multiple cellular events and the mechanisms underlying the development of cardiac hypertrophy are not well understood. Mitochondrial dysfunction has been indicated as a potential and important player in the development of cardiac hypertrophy. Additionally, substantial evidence shows that a significant portion of mitochondrial processes, necessary for normal cardiomyocyte physiology, are impacted by these hypertrophic changes...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28551784/mitochondrial-function-in-non-ischemic-heart-failure
#5
Anisha A Gupte, Dale J Hamilton
Provision for the continuous demand for energy from the beating heart relies heavily on efficient mitochondrial activity. Non-ischemic cardiomyopathy in which oxygen supply is not limiting results from etiologies such as pressure overload. It is associated with progressive development of metabolic stress culminating in energy depletion and heart failure. The mitochondria from the ventricular walls undergoing non-ischemic cardiomyopathy are subjected to long periods of adaptation to support the changing metabolic milieu, which has been described as mal-adaptation since it ultimately results in loss of cardiac contractile function...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28551747/damage-to-the-microbial-cell-membrane-during-pyrolytic-sugar-utilization-and-strategies-for-increasing-resistance
#6
Tao Jin, Marjorie R Rover, Elspeth M Petersen, Zhanyou Chi, Ryan G Smith, Robert C Brown, Zhiyou Wen, Laura R Jarboe
Lignocellulosic biomass is an appealing feedstock for the production of biorenewable fuels and chemicals, and thermochemical processing is a promising method for depolymerizing it into sugars. However, trace compounds in this pyrolytic sugar syrup are inhibitory to microbial biocatalysts. This study demonstrates that hydrophobic inhibitors damage the cell membrane of ethanologenic Escherichia coli KO11+lgk. Adaptive evolution was employed to identify design strategies for improving pyrolytic sugar tolerance and utilization...
May 27, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28551740/changes-of-foraging-patch-selection-and-utilization-by-a-giant-panda-after-bamboo-flowering
#7
Guochun Li, Huadong Song, Latifa A A Altigani, Xueli Zheng, Shuhai Bu
The bamboo flowering leads to the habitat fragmentation and food quality decline of a giant panda. Few empirical research has been conducted about the giant panda's response to the bamboo flowering. Here, we investigated the characteristics of bamboo stands, giant panda's activity, and selection and utilization of bamboo stands by giant panda in Taibaishan National Nature Reserve, China, over a 3-year period (September 2013-May 2016) during the Fargesia qinlingensis flowering period. Our results indicated that the proportion of whole bamboo stands flowering has gradually expanded from 26...
May 27, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28551511/the-effects-of-foot-cooling-on-postural-muscle-responses-to-an-unexpected-loss-of-balance
#8
Oran W Ferguson, Nadia Polskaia, Craig D Tokuno
The purpose of this study was to examine the role of foot sole somatosensory information during reactive postural control. Twenty young adults (22.0±1.4y) participated in this study. Baseline skin sensitivity from the foot sole was assessed using Semmes-Weinstein monofilaments. Postural muscle responses, in the form of electromyographic (EMG) onset latencies and amplitudes, were then obtained while participants recovered their balance while standing on a moveable platform that could translate in either the forward or backward direction...
May 25, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28551498/nasal-chondrocytes-as-a-neural-crest-derived-cell-source-for-regenerative-medicine
#9
REVIEW
Karoliina Pelttari, Marcus Mumme, Andrea Barbero, Ivan Martin
Cells deriving from neural crest are generally acknowledged during embryonic development for their multipotency and plasticity, accounting for their capacity to generate various cell and tissue types even across germ layers. At least partial preservation of some of these properties in adulthood makes neural crest derived cells of large interest for regenerative purposes. Chondrocytes from fully mature nasal septum cartilage in adults are also derivatives of neural crest cells and were recently demonstrated to be able not only to maintain functionality across serial cloning, as surrogate self-renewal test, but also to respond and adapt to heterotopic transplantation sites...
May 25, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28551367/a-multiscale-modelling-approach-for-the-regulation-of-the-cell-cycle-by-the-circadian-clock
#10
Raouf El Cheikh, Samuel Bernard, Nader El Khatib
We present a multiscale mathematical model for the regulation of the cell cycle by the circadian clock. Biologically, the model describes the proliferation of a population of heterogeneous cells connected to each other. The model consists of a high dimensional transport equation structured by molecular contents of the cell cycle-circadian clock coupled oscillator. We propose a computational method for resolution adapted from the concept of particle methods. We study the impact of molecular dynamics on cell proliferation and show an example where discordance of division rhythms between population and single cell levels is observed...
May 24, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28551322/beliefs-knowledge-and-attitudes-towards-parkinson-s-disease-among-a-xhosa-speaking-black-population-in-south-africa-a-cross-sectional-study
#11
Jolynne Mokaya, William K Gray, Jonathan Carr
INTRODUCTION: Many patients with Parkinson's disease (PD) in sub-Saharan Africa (SSA) are thought to be undiagnosed and untreated, leading to poor health outcomes. Increasing rates of diagnosis and treatment, with consequent improvements in the quality of life of people with PD in SSA requires an understanding of how PD is perceived and conceptualized within communities. METHODS: A cross-sectional survey was conducted among a group of Xhosa speaking black South Africans...
May 13, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28551312/locally-advanced-cervical-cancer-is-it-relevant-to-report-image-guided-adaptive-brachytherapy-using-point-a-dose
#12
Renaud Mazeron, Sebastien Gouy, Alexandre Escande, Isabelle Dumas, Eleonor Rivin Del Campo, Enrica Bentivegna, Warren Bocorro, Dimitri Lefkopoulos, Eric Deutsch, Philippe Morice, Christine Haie-Meder, Cyrus Chargari
PURPOSE: To evaluate the usefulness of reporting the point A dose in patients with locally advanced cervical cancer treated with image-guided adaptive brachytherapy (IGABT). METHODS AND MATERIALS: Dosimetric data from patients treated with a combination of chemoradiation and intracavitary IGABT were examined in light of their outcomes. Prescribing followed the Groupe Européen de Curiethérapie-European Society for Radiation Oncology recommendations. All doses were converted in 2-Gy equivalent...
May 24, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28551106/evolution-in-mind-evolutionary-dynamics-cognitive-processes-and-bayesian-inference
#13
REVIEW
Jordan W Suchow, David D Bourgin, Thomas L Griffiths
Evolutionary theory describes the dynamics of population change in settings affected by reproduction, selection, mutation, and drift. In the context of human cognition, evolutionary theory is most often invoked to explain the origins of capacities such as language, metacognition, and spatial reasoning, framing them as functional adaptations to an ancestral environment. However, evolutionary theory is useful for understanding the mind in a second way: as a mathematical framework for describing evolving populations of thoughts, ideas, and memories within a single mind...
May 24, 2017: Trends in Cognitive Sciences
https://www.readbyqxmd.com/read/28551066/socially-induced-plasticity-in-sensorimotor-gating-in-the-african-cichlid-fish-astatotilapia-burtoni
#14
Heike Neumeister, Mila Adelman, William Gallagher, Jiangtao Gou, Karin Merrins, Melissa Perkowski, Stephanie Shih, Beth Terranova, Thomas Preuss
Deficits in sensorimotor gating (PPI), social defeat and social withdrawal are hallmark features of several neurological and neuropsychiatric disorders. However, the link between social environment and PPI i.e., the possible role of social defeat in driving PPI plasticity, is far from clear. Here we explored these questions in the African cichlid fish Astatotilapia burtoni, where males exist as two distinct yet reversible phenotypes. In fish communities, DOMs exhibit frequent aggressive and territorial behaviors, threatening and attacking SUBs, which respond either by engaging in fights and fleeing, or by avoiding interaction with DOMs altogether...
May 24, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28550945/pre-birth-sense-of-smell-in-the-wild-boar-the-ontogeny-of-the-olfactory-mucosa
#15
Domenico Fulgione, Martina Trapanese, Maria Buglione, Daniela Rippa, Gianluca Polese, Viviana Maresca, Valeria Maselli
Animals recognize their surrounding environments through the sense of smell by detecting thousands of chemical odorants. Wild boars (Sus scrofa) completely depend on their ability to recognize chemical odorants: to detect food, during scavenging and searching partners, during breeding periods and to avoid potential predators. Wild piglets must be prepared for the chemical universe that they will enter after birth, and they show intense neuronal activity in the olfactory mucosa. With this in mind, we investigated the morpho-functional embryonic development of the olfactory mucosa in the wild boar (in five stages before birth)...
May 17, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28550751/gender-roles-sex-and-the-expression-of-driving-anger
#16
M J M Sullman, J Paxion, A N Stephens
The present study investigated the validity of the 25-item Driving Anger Expression Inventory (DAX) as well as the role of sex and gender-roles in relation to the expression of driving anger in a sample of 378 French drivers (males=38%, M=32.9years old). Confirmatory Factor Analysis supported the four-factor structure of the 25-item DAX (Adaptive/Constructive Expression; Use of the Vehicle to Express Anger; Verbal Aggressive Expression and Personal Physical Aggressive Expression) and two of the three aggressive factors were found to have significant positive relationships with driving anger, while adaptive/constructive expression was negatively related to driving anger...
May 24, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28550649/improved-formula-see-text-determination-in-23-na-35-cl-and-17-o-mri-using-iterative-partial-volume-correction-based-on-1-h-mri-segmentation
#17
Sebastian C Niesporek, Reiner Umathum, Thomas M Fiedler, Peter Bachert, Mark E Ladd, Armin M Nagel
OBJECTIVE: Functional parameters can be measured with the help of quantitative non-proton MRI where exact relaxometry parameters are needed. Investigation of [Formula: see text] is often biased by strong partial volume (PV) effects. Hence, in this work a PV correction algorithm approach was evaluated that uses iteratively adapted [Formula: see text]-values and high-resolution structural (1)H data to determine transverse relaxation in non-proton MRI more accurately. MATERIALS AND METHODS: Simulations, a phantom study and in vivo (23)Na, (17)O and (35)Cl MRI measurements of five healthy volunteers were performed to evaluate the algorithm...
May 26, 2017: Magma
https://www.readbyqxmd.com/read/28550595/clinical-pharmacokinetics-and-pharmacodynamics-of-colistin
#18
REVIEW
Nicolas Grégoire, Vincent Aranzana-Climent, Sophie Magréault, Sandrine Marchand, William Couet
In this review, we provide an updated summary on colistin pharmacokinetics and pharmacodynamics. Colistin is an old molecule that is frequently used as last-line treatment for infections caused by multidrug-resistant Gram-negative bacteria. Colistin is a decapeptide administered either as a prodrug, colistin methanesulfonate (CMS), when used intravenously, or as colistin sulfate when used orally. Because colistin binds to laboratory materials, many experimental issues are raised and studies on colistin can be tricky...
May 26, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28550437/hyperoxaluria-in-a-model-of-mini-gastric-bypass-surgery-in-rats
#19
Milene S Ormanji, Fernando Korkes, Renata Meca, Crysthiane S R A Ishiy, Gustavo H C Finotti, Renato R N Ferraz, Ita P Heilberg
BACKGROUND: Bariatric surgery is associated with hyperoxaluria hence predisposing to nephrolithiasis. The present study aimed to investigate the underlying mechanisms contributing to increased urinary oxalate in a mini-gastric bypass (MGB) surgery model in rats under different dietary conditions. The expression of intestinal oxalate transporters was also evaluated. METHODS: Male rats underwent MGB (n = 21) or Sham procedure (n = 21) and after recovery were fed a standard or high-fat diet with or without oxalate for 8 weeks...
May 26, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28550425/cpg-oligonucleotide-mediated-co-stimulation-of-mouse-invariant-natural-killer-t-cells-negatively-regulates-their-activation-status
#20
Raveendra R Kulkarni, Alexander Ian Villanueva, Leah R Read, Jennifer T Brisbin, Siddhartha Kumar Bhaumik, Jonathan LaMarre, Kaja Murali-Krishna, Shayan Sharif
Invariant natural killer T (iNKT) cells play important roles in antimicrobial defense and immune-regulation. We have previously shown that iNKT cells express certain toll-like receptors (TLR), and that TLR co-stimulation of iNKT cells in the presence of suboptimal concentrations of T cell receptor (TCR) agonists enhances cellular activation. In the present study, we investigated the regulatory effects of CpG oligonucleotides in mouse primary hepatic and splenic iNKT cells and in DN32.D3 iNKT cells. We show that CpG treatment of iNKT cells in the presence of higher concentrations of TCR agonists (α-GalCer or anti-CD3 mAb) results in the up-regulation of TLR9 in iNKT cells with a concurrent reduction in their cellular activation, as assessed by their production of IL-2, IL-4 and IFN-γ compared with controls...
May 27, 2017: Cell and Tissue Research
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