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https://www.readbyqxmd.com/read/29161767/effects-of-different-endurance-exercise-modalities-on-migraine-days-and-cerebrovascular-health-in-episodic-migraineurs-a-randomized-controlled-trial
#1
Henner Hanssen, Alice Minghetti, Stefano Magon, Anja Rossmeissl, Maria Rasenack, Athina Papadopoulou, Christopher Klenk, Oliver Faude, Lukas Zahner, Till Sprenger, Lars Donath
BACKGROUND: Aerobic exercise training is a promising complementary treatment option in migraine and can reduce migraine days and improve retinal microvascular function. Our aim was to elucidate whether different aerobic exercise programs at high vs. moderate intensities distinctly affect migraine days as primary outcome and retinal vessel parameters as a secondary. METHODS: In this randomized controlled trial, migraine days were recorded by a validated migraine diary in 45 migraineurs of which 36 (female: 28; age: 36 (SD:10)/ BMI: 23...
November 21, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29161697/age-period-cohort-modeling-of-multiple-sclerosis-incidence-rates-in-kuwait-1980-2014
#2
Saeed Akhtar, Jarrah Al-Abkal, Jasem Y Al-Hashel, Raed Alroughani
BACKGROUND: Multiple sclerosis (MS) is a complex immune-mediated disorder of the central nervous system with undefined etiology. Genetic predisposition and environmental factors play an imperative role in MS causation and its sustained increasing burden worldwide. This study examined the age, period, and cohort effects on MS incidence rates in Kuwait. METHODS: In this retrospective cohort study, data on MS cases diagnosed between January 1, 1980 and December 31, 2014 and registered in National MS Registry and reference population were obtained...
November 21, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/29161658/reproductive-performance-of-lactating-dairy-cows-after-inducing-ovulation-using-hcg-in-a-five-day-progesterone-based-fixed-time-ai-protocol
#3
I Garcia-Ispierto, F De Rensis, X Casas, F Caballero, R Mur-Novales, F López-Gatius
This study compares the effects of inducing ovulation using human chorionic gonadotropin (hCG) or gonadotropin releasing hormone (GnRH) at the end of a 5-day progesterone(P4)-based protocol for fixed-time artificial insemination (FTAI) in lactating dairy cows on ovarian dynamics and fertility. A P4 intravaginal device (PRID) was fitted for five days and GnRH administered upon PRID insertion and a double dose (24 h apart) of prostaglandin F2α upon PRID removal. Cows received either GnRH (GnRH group; n = 98), 1000 IU hCG (hCG-1 group; n = 97), or 3000 IU hCG (hCG-2 group; n = 104) 36 h after PRID removal and were inseminated 50-56 h after PRID removal...
November 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/29161498/selective-isolation-of-myosin-subfragment-1-with-a-dna-polyoxovanadate-bioconjugate
#4
Qing Chen, Xue Hu, Dan-Dan Zhang, Xuwei Chen, Jian-Hua Wang
The bioconjugation of a polyoxometalate (POMs), i.e., dodecavanadate (V12O32), to DNA strands produces a functional labeled DNA primer, V12O32-DNA. The grafting of DNA primer onto streptavidin-coated magnetic nanoparticles (SVM) obtains a novel composite, V12O32-DNA@SVM. The high binding-affinity of V12O32 with the ATP binding site in myosin subfragment-1 (S1) facilitates favorable adsorption of myosin, with an efficiency of 99.4% when processing 0.1 mL myosin solution (100 μg/mL) using 0.1 mg composite. Myosin adsorption fits Langmuir model, corresponding to a theoretical adsorption capacity of 613...
November 21, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29161402/fit-for-surgery-perspectives-on-preoperative-exercise-testing-and-training
#5
K Richardson, D Z H Levett, S Jack, M P W Grocott
There is a consistent relationship between physical activity, physical fitness, and health across almost all clinical contexts, including the perioperative setting. Physiological measurements obtained during physical exercise may be used to infer the risk of adverse outcome after major surgery. In particular, data obtained from perioperative cardiopulmonary exercise testing have an expanding role in perioperative care. Such information may be used to inform a variety of changes in clinical practice, including interventions that may reduce the risk of perioperative adverse events...
December 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29161271/a-mathematical-function-for-the-description-of-nutrient-response-curve
#6
Hamed Ahmadi
Several mathematical equations have been proposed to modeling nutrient-response curve for animal and human justified on the goodness of fit and/or on the biological mechanism. In this paper, a functional form of a generalized quantitative model based on Rayleigh distribution principle for description of nutrient-response phenomena is derived. The three parameters governing the curve a) has biological interpretation, b) may be used to calculate reliable estimates of nutrient response relationships, and c) provide the basis for deriving relationships between nutrient and physiological responses...
2017: PloS One
https://www.readbyqxmd.com/read/29161073/evaluating-public-health-interventions-7-let-the-subject-matter-choose-the-effect-measure-ratio-difference-or-something-else-entirely
#7
Donna Spiegelman, Polyna Khudyakov, Molin Wang, Tyler J Vanderweele
We define measures of effect used in public health evaluations, which include the risk difference and the risk ratio, the population-attributable risk, years of life lost or gained, disability-adjusted life years, quality-adjusted life years, and the incremental cost-effectiveness ratio. Except for the risk ratio, all of these are absolute effect measures. For constructing externally generalizable absolute measures of effect when there is superior fit of the multiplicative model, we suggest using the multiplicative model to estimate relative risks, which will often be obtained in simple linear form with no interactions, and then converting these to the desired absolute measure...
November 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/29161059/american-doctors-at-the-nuremberg-medical-trial
#8
Evelyne Shuster
Three Hippocratic physicians played critical roles in the prosecution of 23 Nazi doctors charged with murder and torture for conducting lethal medical experiments on concentration camp prisoners. Two of the physicians, Leopold Alexander and Andrew C. Ivy, were Americans, and the other, Werner Leibbrandt, was German. At the 70th anniversary of the Doctors' Trial it is fitting to recall the three's influences and contributions to the formulation of strict research ethics rules, known as the Nuremberg Code. Their contributions help us better understand why they insisted on strict research rules and yet ultimately were unable to apply these rules to their own research...
November 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/29161049/on-the-empirical-analysis-of-optical-kerr-effect-spectra-a-case-for-constraint
#9
John S Bender, John T Fourkas, Benoit Coasne
Ultrafast optical Kerr effect (OKE) spectroscopy is a widely used method for studying the depolarized, Raman-active intermolecular dynamics of liquids. Through appropriate manipulation of OKE data, it is possible to determine the reduced spectral density (RSD), which is the Bose-Einstein-corrected, low-frequency Raman spectrum with the contribution of diffusive reorientation removed. OKE RSDs for van der Waals liquids can often be fit well to an empirical function that is the sum of a Bucaro-Litovitz function and an antisymmetrized Gaussian (AG)...
November 21, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29160917/visualization-of-calcium-phosphate-cement-in-teeth-by-zero-echo-time-1-h-mri-at-high-field
#10
Weiqiang Dou, Simone Mastrogiacomo, Andor Veltien, Hamdan S Alghamdi, X Frank Walboomers, Arend Heerschap
(1) H magnetic resonance imaging (MRI) by a zero echo time (ZTE) sequence is an excellent method to image teeth. Calcium phosphate cement (CPC) materials are applied in the restoration of tooth lesions, but it has not yet been investigated whether they can be detected by computed tomography (CT) or MRI. The aim of this study was to optimize high-field ZTE imaging to enable the visualization of a new CPC formulation implanted in teeth and to apply this in the assessment of its decomposition in vivo. CPC was implanted in three human and three goat teeth ex vivo and in three goat teeth in vivo...
November 21, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/29160913/bigger-testes-increase-paternity-in-a-simultaneous-hermaphrodite-independently-of-the-sperm-competition-level
#11
Nikolas Vellnow, Lucas Marie-Orleach, Kira S Zadesenets, Lukas Schärer
All sexually reproducing organisms face the evolutionary optimization problem of how much of their limited resources they should invest into male versus female reproduction, i.e., the problem of sex allocation (Charnov, 1982). Consider, for example, producing the optimal offspring sex ratio in gonochoristic (separate-sexed) animals. Since during sexual reproduction both parents contribute the same amount of nuclear genetic material to the zygote, the total fitness of males and females-on the population level-has to be equal (Düsing, 1884; Fisher, 1930; Houston & McNamara, 2006; Queller, 2006)...
November 21, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/29160808/interplay-between-colistin-resistance-virulence-and-fitness-in-acinetobacter-baumannii
#12
REVIEW
Gabriela Jorge Da Silva, Sara Domingues
Acinetobacter baumannii is an important opportunistic nosocomial pathogen often resistant to multiple antibiotics classes. Colistin, an "old" antibiotic, is now considered a last-line treatment option for extremely resistant isolates. In the meantime, resistance to colistin has been reported in clinical A. baumannii strains. Colistin is a cationic peptide that disrupts the outer membrane (OM) of Gram-negative bacteria. Colistin resistance is primarily due to post-translational modification or loss of the lipopolysaccharide (LPS) molecules inserted into the outer leaflet of the OM...
November 21, 2017: Antibiotics
https://www.readbyqxmd.com/read/29160732/optimization-and-characterization-of-sertaconazole-nitrate-flexisomes-embedded-in-hydrogel-for-improved-antifungal-activity
#13
Satish K Mandlik, Shridhar S Siras, Kiran R Birajdar
The aim of the present research work was to develop, characterize and optimize sertaconazole nitrate (STZN) embedded flexisomes (STZN-FS) to improve the cutaneous anti-fungal activity of STZN. Flexisomes are self-aggregating, flexible, deformable lipidic vesicles possessing an aqueous core. A 3(2) factorial design was implemented to optimize the effects of the critical material attributes of concentration of phospholipid (X1) and edge activator (X2) on the critical quality attributes of particle size (Y1), entrapment efficiency (Y2) and deformability index (Y3)...
November 21, 2017: Journal of Liposome Research
https://www.readbyqxmd.com/read/29160617/exploring-the-enantiorecognition-mechanism-of-cinchona-alkaloid-based-zwitterionic-chiral-stationary-phases-and-the-basic-trans-paroxetine-enantiomers
#14
Roccaldo Sardella, Antonio Macchiarulo, Fabrizio Urbinati, Federica Ianni, Andrea Carotti, Michal Kohout, Wolfgang Lindner, Antal Péter, István Ilisz
The enantiomers of trans-paroxetine (the selectand) were separated on four chiral stationary phases incorporating either quinine [ZWIX(+), ZWIX(+A)] or quinidine [ZWIX(-), ZWIX(-A)] and (R,R)-aminocyclohexanesulfonic acid [in ZWIX(-), and ZWIX(+A)] or (S,S)- aminocyclohexanesulfonic acid [in ZWIX(+), and ZWIX(-A)] chiral selectors. The zwitterion nature of the phases is due to the presence of either (R,R)- or (S,S)-aminocyclohexanesulfonic acid in the selector structure bearing the quinuclidine moiety. ZWIX(+), ZWIX(-) phases are available on the market with the commercial names CHIRALPAK ZWIX(+) and CHIRALPAK ZWIX(-), respectively...
November 21, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/29160570/bayesian-occam-s-razor-is-a-razor-of-the-people
#15
Thomas Blanchard, Tania Lombrozo, Shaun Nichols
Occam's razor-the idea that all else being equal, we should pick the simpler hypothesis-plays a prominent role in ordinary and scientific inference. But why are simpler hypotheses better? One attractive hypothesis known as Bayesian Occam's razor (BOR) is that more complex hypotheses tend to be more flexible-they can accommodate a wider range of possible data-and that flexibility is automatically penalized by Bayesian inference. In two experiments, we provide evidence that people's intuitive probabilistic and explanatory judgments follow the prescriptions of BOR...
November 21, 2017: Cognitive Science
https://www.readbyqxmd.com/read/29160558/simpson-s-paradox-in-the-integrated-discrimination-improvement
#16
J Chipman, D Braun
The integrated discrimination improvement (IDI) is commonly used to compare two risk prediction models; it summarizes the extent a new model increases risk in events and decreases risk in non-events. The IDI averages risks across events and non-events and is therefore susceptible to Simpson's paradox. In some settings, adding a predictive covariate to a well calibrated model results in an overall negative (positive) IDI. However, if stratified by that same covariate, the strata-specific IDIs are positive (negative)...
December 10, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/29160557/the-complex-trauma-inventory-a-self-report-measure-of-posttraumatic-stress-disorder-and-complex-posttraumatic-stress-disorder
#17
Justin M Litvin, Patricia L Kaminski, Shelley A Riggs
The work group revising the criteria for trauma-related disorders in the International Classification of Diseases (ICD-11) made several changes. Specifically, they simplified the criteria for posttraumatic stress disorder (PTSD) and added a new trauma disorder called complex PTSD (CPTSD). These proposed changes to taxonomy require new instruments to assess these novel constructs. We developed a measure of PTSD and CPTSD (the Complex Trauma Inventory; CTI) according to the proposed domains, creating several items to assess each domain...
November 21, 2017: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/29160440/comparing-definitions-of-spatial-relations-for-the-analysis-of-geographic-disparities-in-mortality-within-a-bayesian-mixed-effects-framework
#18
Diego Fernando Rojas-Gualdrón
OBJECTIVE: To analyze the conceptual and technical differences between three definitions of spatial relations within a Bayesian mixed-effects framework: classical multilevel definition, spatial multiple membership definition and conditional autoregressive definition with an illustration of the estimate of geographic disparities in early neonatal mortality in Colombia, 2011-2014. METHODS: A registry based cross-sectional study was conducted. Births and early neonatal deaths were obtained from the Colombian vital statistics registry for 2011-2014...
July 2017: Revista Brasileira de Epidemiologia, Brazilian Journal of Epidemiology
https://www.readbyqxmd.com/read/29160383/epidemiological-trends-of-allergic-diseases-in-adolescents
#19
Silvia de Souza Campos Fernandes, Cláudia Ribeiro de Andrade, Cristina Gonçalves Alvim, Paulo Augusto Moreira Camargos, Cássio da Cunha Ibiapina
OBJECTIVE: To assess the prevalences of asthma, allergic rhinitis, and allergic rhinoconjunctivitis in adolescents in the city of Belo Horizonte, Brazil, in 2012 by administering the International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire, as well as to compare the observed prevalences with those found in studies performed 10 years earlier and employing the same methodology used here. METHODS: This was a cross-sectional study conducted between May and December of 2012 and involving adolescents in the 13- to 14-year age bracket...
September 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29160233/comet-strongly-supported-the-development-and-implementation-of-medium-term-topical-research-roadmaps-consistent-with-the-alliance-strategic-research-agenda
#20
Jacqueline Garnier-Laplace, Hildegarde Vandenhove, N Beresford, Maarit Muikku, Almudena Real
The ALLIANCE Strategic Research Agenda (SRA) initiated by the STAR Network of Excellence and integrated in the research strategy implemented by the COMET consortium, defines a long-term vision of the needs for, and implementation of, research in radioecology. This reference document, reflecting views from many stakeholders groups and researchers, serves as an input to those responsible for defining EU research call topics through the ALLIANCE SRA statement delivered each year to the EJP CONCERT (2015-2020)...
November 21, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
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