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https://www.readbyqxmd.com/read/28633990/cellular-gauge-symmetry-and-the-li-organization-principle-a-mathematical-addendum-quantifying-energetic-dynamics-in-physical-and-biological-systems-through-a-simple-geometric-tool-and-geodetic-curves
#1
REVIEW
Alexander Yurkin, Arturo Tozzi, James F Peters, Pedro C Marijuán
The present Addendum complements the accompanying paper "Cellular Gauge Symmetry and the Li Organization Principle"; it illustrates a recently-developed geometrical physical model able to assess electronic movements and energetic paths in atomic shells. The model describes a multi-level system of circular, wavy and zigzag paths which can be projected onto a horizontal tape. This model ushers in a visual interpretation of the distribution of atomic electrons' energy levels and the corresponding quantum numbers through rather simple tools, such as compasses, rulers and straightforward calculations...
June 17, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28630163/measuring-the-potential-energy-barrier-to-lipid-bilayer-electroporation
#2
Jason T Sengel, Mark I Wallace
Electroporation is a common tool for gene transfection, tumour ablation, sterilization and drug delivery. Using experimental methods, we explore the temperature dependence of electropore formation in a model membrane system (droplet-interface bilayers), using optical single-channel recording to image the real-time gating of individual electropores. We investigate the influence of the agarose substrate on electropores formed in this system. Furthermore, by examining the temperature-dependent kinetics of pore opening and closure we are able to estimate a barrier to pore opening in 1,2-diphytanoyl-sn-glycero-3-phosphocholine (DPhPC) membranes to be 25...
August 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28629285/acute-movement-disorders-in-the-medical-setting
#3
Ifrah Zawar, Mario A Caro, Lara Feldman, Xavier F Jimenez
Objective Psychosomatic medicine psychiatrists are often tasked with the evaluation and treatment of complex neuropsychiatric states which may be motoric in phenotype. Little energy has been dedicated to understanding acute movement disorders in the hospital environment. Method Recognizing the importance of frontal-subcortical (corticostriatothalamocortical) circuitry and basal ganglia structures, we present a case series of acute movement disorder phenotypes resulting from underlying medical conditions, commonly-administered medications, or the interaction of both...
July 2016: International Journal of Psychiatry in Medicine
https://www.readbyqxmd.com/read/28624535/atp-free-biosynthesis-of-a-high-energy-phosphate-metabolite-fructose-1-6-diphosphate-by-in-vitro-metabolic-engineering
#4
Wei Wang, Meixia Liu, Chun You, Zhimin Li, Yi-Heng Percival Zhang
Fructose 1,6-diphosphate (FDP) is a widely used medicine and is also a precursor of two important three-carbon phosphates -- glyceraldehyde 3-phosphate (GA3P) and dihydroxyacetone phosphate (DHAP) for the biosynthesis of numerous fine chemicals. An in vitro synthetic cofactor-free enzymatic pathway comprised of four hyperthermophilic enzymes was designed to produce FDP from starch and pyrophosphate. All of four hyperthermophilic enzymes (i.e., alpha-glucan phosphorylase from Thermotaga maritima, phosphoglucomutase from Thermococcus kodakarensis, glucose 6-phosphate isomerase from Thermus thermophilus, and pyrophosphate phosphofructokinase from T...
June 14, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28620575/osteoporosis-management-in-ankylosing-spondylitis
#5
Alicia M Hinze, Grant H Louie
Low bone mineral density (BMD) is increasingly recognized as a common comorbid condition in ankylosing spondylitis (AS). As low BMD increases fracture risk, it is important to identify and treat low BMD in patients with AS who have been shown to be at increased risk for fractures above the population normal. Since low BMD occurs early in disease, we screen during the first year of diagnosis with dual energy x-ray absorptiometry (DXA). If patients are found to have osteoporosis by T-score of less than -2.5 or if their Z-score on DXA is more than two standard deviations below the mean, we initiate therapy with bisphosphonates in males and in females who are not planning any future pregnancies...
December 2016: Current Treatment Options in Rheumatology
https://www.readbyqxmd.com/read/28619593/on-the-halt-of-spontaneous-capillary-flows-in-diverging-open-channels
#6
J Berthier, K A Brakke, D Gosselin, F Navarro, N Belgacem, D Chaussy, E Berthier
Due to their compactness and independence of exterior energy sources, capillary microsystems are increasingly used in many different scientific domains, from biotechnology to medicine and biology, chemistry, energy and space. Obtaining a capillary flow depends on channel geometry and contact angle. A general condition for the establishment of a spontaneous capillary flow in a uniform cross section channel has already been derived from Gibbs free energy. In this work, we consider spontaneous capillary flows (SCF) in diverging open rectangular channels and suspended channels, and we show that they do not flow indefinitely but stop at some location in the channel...
June 12, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28618069/optimization-of-acoustic-radiation-force-imaging-influence-of-timing-parameters-on-sensitivity
#7
Tetiana Dadakova, Axel Joachim Krafft, Ali Caglar Özen, Michael Bock
PURPOSE: Optimization of timing parameters for MR-guided ARFI to achieve the highest displacement signal-to-noise ratio (SNRd ). THEORY AND METHODS: In MR-guided ARFI the phase change induced by motion encoding gradients (MEGs) is measured to assess tissue displacement. The sensitivity of this encoding procedure depends on several timing parameters, such as the MEG duration and the offset time between ultrasound (US) and MEG. Furthermore, mechanical and MR tissue constants and MEG schemes (bipolar or three-lobed) influence SNRd ...
June 15, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28614156/endothelial-cell-loss-in-diabetic-and-nondiabetic-eyes-after-cataract-surgery
#8
Xu He, Vasilios F Diakonis, Yasamin Alavi, Nilufer Yesilirmak, Daniel Waren, Kendall Donaldson
PURPOSE: To assess and compare the changes in endothelial cell density in diabetic and nondiabetic patients after routine phacoemulsification cataract surgery. SETTING: Bascom Palmer Eye Institute, Miller School of Medicine, Miami, FL, USA. DESIGN: Retrospective nonrandomized cohort study. METHODS: This retrospective study included diabetic and nondiabetic patients who underwent phacoemulsification by a single surgeon (K...
June 13, 2017: Cornea
https://www.readbyqxmd.com/read/28612706/autophagy-and-its-link-to-type-ii-diabetes-mellitus
#9
Jai-Sing Yang, Chi-Cheng Lu, Sheng-Chu Kuo, Yuan-Man Hsu, Shih-Chang Tsai, Shih-Yin Chen, Yng-Tay Chen, Ying-Ju Lin, Yu-Chuen Huang, Chao-Jung Chen, Wei-De Lin, Wen-Lin Liao, Wei-Yong Lin, Yu-Huei Liu, Jinn-Chyuan Sheu, Fuu-Jen Tsai
Autophagy, a double-edged sword for cell survival, is the research object on 2016 Nobel Prize in Physiology or Medicine. Autophagy is a molecular mechanism for maintaining cellular physiology and promoting survival. Defects in autophagy lead to the etiology of many diseases, including diabetes mellitus (DM), cancer, neurodegeneration, infection disease and aging. DM is a metabolic and chronic disorder and has a higher prevalence in the world as well as in Taiwan. The character of diabetes mellitus is hyperglycemia resulting from defects in insulin secretion, insulin action, or both...
June 2017: BioMedicine
https://www.readbyqxmd.com/read/28610692/a-didactic-experiment-showing-the-compton-scattering-by-means-of-a-clinical-gamma-camera
#10
Ernesto Amato, Lucrezia Auditore, Alfredo Campennì, Fabio Minutoli, Mariapaola Cucinotta, Alessandro Sindoni, Sergio Baldari
We describe a didactic approach aimed to explain the effect of Compton scattering in nuclear medicine imaging, exploiting the comparison of a didactic experiment with a gamma camera with the outcomes from a Monte Carlo simulation of the same experimental apparatus. We employed a (99m)Tc source emitting 140.5keV photons, collimated in the upper direction through two pinholes, shielded by 6mm of lead. An aluminium cylinder was placed on the source at 50mm of distance. The energy of the scattered photons was measured on the spectra acquired by the gamma camera...
June 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28610443/valorization-of-potato-peel-a-biorefinery-approach
#11
Pranav D Pathak, Sachin A Mandavgane, Nikhil Manoj Puranik, Swapnil Jaygopal Jambhulkar, Bhaskar D Kulkarni
Potato is the fourth main crop consumed worldwide and is an important constituent in the human diet. Consequently, potato is widely used in food-processing industries. However, these industries generate massive amounts of potato peel (PP) as a by-product, which is usually considered a waste, and is discarded. Interestingly, recent research suggests that PP is a valuable source of bioactive compounds, which can be converted into value-added products. In this study, we review the physicochemical composition and valorization of PP...
June 14, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28605326/effect-of-different-proportions-of-agrowaste-on-cultivation-yield-and-nutritional-composition-of-the-culinary-medicinal-jelly-mushroom-auricularia-polytricha-higher-basidiomycetes
#12
Chiu-Yeh Wu, Chih-Hung Liang, Kuan-Jzen Wu, Hsin-Der Shih, Zeng-Chin Liang
In this study, Auricularia polytricha was cultivated on a sawdust basal substrate supplemented with different proportions (30%, 45%, and 60%, respectively) of agrowastes-sugarcane bagasse (SB), rice straw (RS), and rice husk (RH)-to evaluate the alternative substrates. The mycelial growth rate, total colonization time, time to first primordia, biological efficiency, and chemical composition of the fruiting bodies were determined. Results indicated that the 60% SB substrate was the best substrate for mycelial growth of A...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28604516/mineral-intake-and-status-of-cow-s-milk-allergic-infants-consuming-an-amino-acid-based-formula
#13
B M Harvey, S R B M Eussen, Lucien F Harthoorn, A W Burks
Data on the mineral status of infants with cow's milk allergy (CMA) consuming an amino acid-based formula (AAF) have not been published. The present study aims to assess mineral status of term infants aged 0-8 months diagnosed with CMA receiving an AAF for 16 weeks. Serum concentrations of calcium, phosphorus, chloride, sodium, potassium, magnesium and ferritin were determined in 82 subjects at baseline and in 66 subjects after 16 weeks on AAF using standard methods and evaluated against age-specific reference ranges...
June 9, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28602783/patient-reported-reasons-for-nonadherence-to-recommended-osteoporosis-pharmacotherapy
#14
Sylvie F Hall, Stephanie W Edmonds, Yiyue Lou, Peter Cram, Douglas W Roblin, Kenneth G Saag, Nicole C Wright, Michael P Jones, Fredric D Wolinsky
OBJECTIVES: As many as one-half of patients recommended for osteoporosis pharmacotherapy do not take their medications. To identify intervention targets, we examined patient characteristics associated with nonadherence to recommended pharmacotherapy and their reasons for nonadherence. METHODS: Data come from the Patient Activation after DXA Result Notification (PAADRN) study, a randomized controlled trial of 7749 patients aged 50 years or older presenting for dual-energy X-ray absorptiometry (DXA) at 3 health centers in the United States...
June 8, 2017: Journal of the American Pharmacists Association: JAPhA
https://www.readbyqxmd.com/read/28599895/variations-in-resting-energy-expenditure-impact-on-gestational-weight%C3%A2-gain
#15
Ek Berggren, P O'Tierney-Ginn, S Lewis, L Presley, S Hauguel De-Mouzon, P M Catalano
BACKGROUND: There are significant variations in gestational weight gain, with many women gaining in excess of the Institute of Medicine guidelines. Unfortunately, efforts to improve appropriate gestational weight gain have had only limited success. To date, interventions have focused primarily on decreasing energy intake and/or increasing physical activity. Maternal resting energy expenditure, which comprises ∼60% of total energy expenditure compared with the ∼20% that comes from physical activity, may be an important consideration in understanding variations in gestational weight gain...
June 17, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28596948/standardization-of-123-i-meta-iodobenzylguanidine-myocardial-sympathetic-activity-imaging-phantom-calibration-and-clinical-applications
#16
REVIEW
Kenichi Nakajima, Derk O Verschure, Koichi Okuda, Hein J Verberne
PURPOSE: Myocardial sympathetic imaging with (123)I-meta-iodobenzylguanidine ((123)I-mIBG) has gained clinical momentum. Although the need for standardization of (123)I-mIBG myocardial uptake has been recognized, the availability of practical clinical standardization approaches is limited. The need for standardization includes the heart-to-mediastinum ratio (HMR) and washout rate with planar imaging, and myocardial defect scoring with single-photon emission computed tomography (SPECT)...
2017: Clinical and Translational Imaging: Reviews in Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28586533/characterization-of-rapid-extraction-protocols-for-high-throughput-metabolomics
#17
Sarah Gehrke, Julie A Reisz, Travis Nemkov, Kirk C Hansen, Angelo D'Alessandro
RATIONALE: In the last five years, high throughput metabolomics has significantly advanced scientific research and holds the potential to promote strides in the fields of clinical metabolomics and personalized medicine. While innovations in the field of flow-injection mass spectrometry and three-minute metabolomics methods now allow investigators to process hundreds to thousands of samples per day, time-sensitive clinical applications, particularly in the emergency department, are limited by a lack of rapid extraction methods...
June 6, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28583599/serum-concentration-dynamic-of-energy-homeostasis-hormones-leptin-insulin-thyroid-hormones-and-cortisol-throughout-canine-pregnancy-and-lactation
#18
L Cardinali, A Troisi, J P Verstegen, L Menchetti, A Elad Ngonput, C Boiti, S Canello, R Zelli, A Polisca
Pregnancy and lactation represent critical periods of canine reproductive life and different hormones are required to maintain homeostasis and the correct energy requirements. The aim of this study was to evaluate leptin, insulin, triiodotyronine (T3), thyroxin (T4) and cortisol serum concentrations to better describe the canine maternal energy metabolism. Twelve Bloodhound bitches that had at least one litter and were considered to be healthy submitted blood samples every 15 days starting from day 0 (ovulation) throughout pregnancy up to the end of lactation (day 120)...
July 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28576339/the-toxicity-and-the-acaricidal-mechanism-against-psoroptes-cuniculi-of-the-methanol-extract-of-adonis-coerulea-maxim
#19
Xiaofei Shang, Xiao Guo, Feng Yang, Bing Li, Hu Pan, Xiaolou Miao, Jiyu Zhang
SCOPE: Adonis coerulea Maxim. is a perennial herbaceous plant that grows in scrub, grassy slope areas, and as traditional medicine it has been used to treat animal acariasis for thousands of years. In this paper, we aimed to study the acute toxicity and cytotoxicity of the methanol extract of A. coerulea (MEAC) in vivo and in vitro for supporting the clinic uses. The acaricidal activity and the mechanism of action against Psoroptes cuniculi were investigated. RESULTS: The results showed that isoorientin, luteolin and apigenin were the primary compounds in MEAC...
June 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28575108/changes-in-the-leaf-proteome-profile-of-withania-somnifera-l-dunal-in-response-to-alternaria-alternata-infection
#20
Varinder Singh, Baldev Singh, Robin Joshi, Puneet Jaju, Pratap Kumar Pati
Withania somnifera is a high value medicinal plant which is used against large number of ailments. The medicinal properties of the plant attributes to a wide array of important secondary metabolites. The plant is predominantly infected with leaf spot pathogen Alternaria alternata, which leads to substantial biodeterioration of pharmaceutically important metabolites. To develop an effective strategy to combat this disease, proteomics based approach could be useful. Hence, in the present study, three different protein extraction methods tris-buffer based, phenol based and trichloroacetic acid-acetone (TCA-acetone) based method were comparatively evaluated for two-dimensional electrophoresis (2-DE) analysis of W...
2017: PloS One
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