PubMed Journals Articles About "Steps Editors Calling" - Page: 20 RSS

15:59 EDT 24th September 2018 | BioPortfolio

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Showing "Steps Editors Calling" PubMed Articles 476–500 of 1,700+

Characteristics of perceived electromagnetic hypersensitivity in the general population.

Health problems evoked in the presence of electrical equipment is a concern, calling for better understanding for characteristics of electromagnetic hypersensitivity (EHS) in the general population. The present study investigated demographics, lifestyle factors, frequency and duration, coping strategies, proportion meeting clinical criteria for intolerance attributed to electromagnetic fields (EMF) and comorbidity. Using data from a large-scale population-based questionnaire study, we investigated persons w...

Parameter inference to motivate asymptotic model reduction: an analysis of the gibberellin biosynthesis pathway.

Developing effective strategies to use models in conjunction with experimental data is essential to understand the dynamics of biological regulatory networks. In this study, we demonstrate how combining parameter estimation with asymptotic analysis can reveal the key features of a network and lead to simplified models that capture the observed network dynamics. Our approach involves fitting the model to experimental data and using the Profile Likelihood to identify small parameters and cases where model dyn...

320-row CT transcatheter aortic valve replacement planning with a single reduced contrast media bolus injection.

To reduce the iodine load required for CT Transcatheter Aortic Valve Replacement (TAVR) planning on a 320-row scanner by acquiring the two CT TAVR steps (ECG-gated aortic root CTA and non-gated aorto-ilio-femoral CTA) within a single contrast media bolus injection.

Ring expansion and re-contraction for the synthesis of 1-aryl tetrahydroisoquinolines and tetrahydrobenzazepines from readily available heterocyclic precursors.

Tetrahydroisoquinolines and tetrahydrobenzazepines are prepared by acid-promoted ring contraction of cyclic ureas, themselves formed by ring expansion of indolines and tetrahydroquinolines. The consequent overall one-carbon insertion reaction gives these 6- and 7-membered heterocyclic scaffolds in three steps from readily available precursors. Other ring sizes may be formed by an alternative elimination reaction of bicyclic structures. Scalability of the method was demonstrated by operating it in a flow sys...

Anticipatory postural responses prior to protective steps are not different in people with PD who do and do not freeze.

Protective stepping after a loss of balance is related to falls. Anticipatory postural responses (APAs) prior to protective stepping can impact step performance, may be larger in people with PD, and have been suggested to be related to freezing of gait (FOG). However, whether people with PD and FOG (PD + FOG) exhibit larger APAs than people with PD and no FOG (PD-FOG) is unknown.

Illustrating natural history: images, periodicals, and the making of nineteenth-century scientific communities.

This paper examines how communities of naturalists in mid-nineteenth-century Britain were formed and solidified around the shared practices of public meetings, the publication and reading of periodicals, and the making and printing of images. By focusing on communities of naturalists and the sites of their communication, this article undermines the distinction between amateur and professional scientific practice. Building on the notion of imagined communities, this paper also shows that in some cases the ed...

Ultrastructure and electrophysiology of thermosensitive sensilla coeloconica in a tropical katydid of the genus Mecopoda (Orthoptera, Tettigoniidae).

In many acoustic insects, mate finding and mate choice are primarily based on acoustic signals. In several species with high-intensity calling songs, such as the studied katydid Mecopoda sp., males exhibit an increase in their thoracic temperature during singing, which is linearly correlated with the amount of energy invested in song production. If this increased body temperature is used by females as an additional cue to assess the male's quality during mate choice, as has been recently hypothesized ("hot-...

Total Synthesis of Lapidilectine B Enabled by Manganese(III)-Mediated Oxidative Cyclization of Indoles.

A novel manganese(III)-mediated oxidative cyclization of readily accessible 1,2,3-trisubstituted indoles is described. This unprecedented method enabled the efficient construction of a complex polycyclic scaffold bearing a spiro-indoline motif and a lactone moiety in one step. Its synthetic utility was demonstrated in total synthesis of lapidilectine B (in 18 steps) by employing a strategic regioselective ring-expansion and a silver-promoted allenic amine cyclization as the additional key elements.

Vulvar Hemangioma: Case Report.

Hemangioma is a benign neoplasm that may affect the vulva, and it can cause functional or emotional disability. This article reports the case of a 52-year-old female patient with a history of a genital ulcer for the past 3 years and who had undergone various treatments with creams and ointments. The patient was biopsied and diagnosed with vulvar hemangioma and was subsequently submitted to surgical excision of the lesion. We emphasize the importance of following the steps of the differential diagnosis and p...

Synthesis versus degradation: directions of amino acid metabolism during Arabidopsis abiotic stress response.

During abiotic stress low abundant amino acids are not synthesized but they accumulate due to increased protein turnover under conditions inducing carbohydrate starvation (dehydration, salt stress, darkness) and are degraded. Metabolic adaptation is crucial for abiotic stress resistance in plants, and accumulation of specific amino acids as well as secondary metabolites derived from amino acid metabolism has been implicated in increased tolerance to adverse environmental conditions. The role of proline, whi...

Consultation-liaison psychiatry - steps towards integration of physical and mental health care.

The evidence for the clinical and economical effectiveness of consultation-liaison psychiatry has increased considerably in recent years. However, the development of consultation-liaison psychiatry services in Sweden is lagging behind other countries. Therefore, this article outlines the current state of service development, the potentials of consultation-liaison psychiatry, and the prerequisites for change. Politicians, commissioners and important stakeholders have to realize the potential of a better inte...

Silencing of Discoidin Domain Receptor-1 (DDR1) Concurrently Inhibits Multiple Steps of Metastasis Cascade in Gastric Cancer.

Accumulating evidence suggests that a unique set of receptor tyrosine kinases, known as discoidin domain receptors (DDRs), plays a role in cancer progression by interacting with the surrounding collagen matrix. In this study, we investigated the expression and role of DDR1 in human gastric cancer metastasis. Proliferation, migration, invasion, and tube formation assays were conducted in DDR1-expressing MKN74 gastric cancer cells and corresponding DDR1-silenced cells. The effects of DDR1 on tumor growth and ...

Beyond The ACA: Paths To Universal Coverage In California.

California has long sought to achieve universal health insurance coverage for its residents. The state's uninsured population was dramatically reduced as a result of the Affordable Care Act (ACA). However, faced with federal threats to the ACA, California is exploring how it might take greater control over the financing of health care. In 2017 the state Senate passed the Healthy California Act, SB-562, calling for California to adopt a single-payer health care system. The state Assembly did not vote on the ...

Super High Resolution for Single Molecule-Sequence-Based Typing of Classical HLA Loci Using Ion Torrent PGM.

Super high resolution-single molecule-sequence-based typing (SS-SBT) is an HLA DNA typing method to the field 4 level of allelic resolution (formerly known as 8-digit typing) to efficiently detect novel and null alleles without phase ambiguity by combination of long ranged PCR amplification and next-generation sequencing (NGS) technologies. In this chapter, we describe three basic steps, long ranged PCR, NGS, and allele assignment.

Synthesis of Chiral Tryptamines via a Regioselective Indole Alkylation.

A practical synthesis of chiral tryptamines from simple, unprotected indoles has been developed. Indole nucleophiles prepared with MeMgCl in the presence of CuCl reacted with chiral cyclic sulfamidates almost exclusively at the C-position of indole to form a variety of α- and/or β-substituted chiral tryptamines in good yield with excellent regioselectivity. The utility of this simple alkylation process has been demonstrated with the practical synthesis of two biologically active targets, cipargamin and TI...

Did Your Evidence-Base Program Work? Share the News! CLUES #5/6: Assess and Alert.

The work of the school nurse does not end with the institution of an evidence-based intervention. The steps of EBP tell us that we must "Assess" the effectiveness of an intervention to determine if it is having the desired effect. When we find success in our EBP changes we must come full circle and share or "Alert" stakeholders and other school nurses by disseminating our work. School nurses can share their success through written and oral presentations to insure that we add to our collective school nursing...

A sticky situation: aberrant protein-protein interactions in Parkinson's disease.

The aberrant aggregation of normally soluble proteins into amyloid fibrils is the pathological hallmark of several neurodegenerative disorders, including Alzheimer's and Parkinson's diseases. Understanding this process will be key to developing both diagnostic and therapeutic approaches for neurodegenerative diseases. Recent advances in biophysical techniques, coupled with kinetic analyses have enabled a thorough description of the key molecular steps involved in protein aggregation. In this review, we disc...

A Reactive Balance Rating Method that Correlates with Kinematics after Trip-Like Perturbations on a Treadmill and Fall Risk Among Residents of Older Adult Congregate Housing.

A growing number of studies are using modified treadmills to train reactive balance after trip-like perturbations that require multiple steps to recover balance. The goal of this study was thus to develop and validate a low-tech reactive balance rating method in the context of trip-like treadmill perturbations to facilitate the implementation of this training outside the research setting.

Pediatric Fatty Liver Disease (PeFLD): all is not NAFLD - pathophysiological insights and approach to management.

The recognition of a pattern of steatotic liver injury where histology mimicked alcoholic liver disease but alcohol consumption was denied, led to the identification of non-alcoholic fatty liver disease (NAFLD). Non-alcoholic fatty liver disease has since become the most common chronic liver disease in adults owing to the global epidemic of obesity. However, in pediatrics, the term NAFLD seems incongruous: alcohol consumption is largely not a factor and inherited metabolic disorders (IMD) can mimic or co-ex...

Genetic association study of NLRP1, CARD, and CASP1 inflammasome genes with chronic Chagas cardiomyopathy among Trypanosoma cruzi seropositive patients in Bolivia.

About 20-30% of people infected with Chagas disease present with chronic Chagas cardiomyopathy (CCC), the most serious and frequent manifestation of the disease, while others remain asymptomatic and often do not experience Chagas-specific mortality. It is not currently well understood what causes these differential disease outcomes, but a genetic predisposition within the host could play an important role. This study examined variants in the NLRP1, CARD, and CASP1 inflammasome genes among 62 T. cruzi seropo...

Capsulorhexis Real-Life - Experienced Surgeon versus Femto Laser Assisted Cataract Surgery (FLACS) as Reported in Literature.

Capsulorhexis is one of the most important steps in cataract surgery. Good centration, circular overlap in sufficient size and a circular edge without tears result in good centration of the intraocular lens (IOL). In this study, the capsulorhexis results of an experienced surgeon are compared with reported data in femtolaser assisted cataract surgery (FLACS).

The rendez-vous of mobile sieve-element and abundant companion-cell proteins.

Thousands of sieve tube exudate proteins (STEP) have now been identified and predicted to fulfill a diversity of functions. However, most STEPs should be considered putative, since methods to collect sieve tube exudates have many technical drawbacks, and advanced functional characterization will be required to distinguish contaminant from bonafide proteins, and determine the latter's location and activity in sieve elements (SE). One major challenge is to develop new approaches to elucidate the function of t...

Stereoselective Access to the Core Structure of Macroline-Type Indole Alkaloids: Total Synthesis of Macroline and Alstomicine.

Rapid synthesis of the pentacyclic core structure of macroline-type indole alkaloids, and its application in the total synthesis of macroline and alstomicine is described. The core structure was accomplished in a highly stereocontrolled manner via two key steps, Ireland-Claisen rearrangement and Pictet-Spengler cyclization, commencing from a readily available starting material l-tryptophan, which obviated the need of a particular chiral source as an external catalyst, reagent, or internal auxiliary.

Molecular and cellular insights into the pathogenesis of coronary artery ectasia.

Coronary artery ectasia describes a local or diffuse dilatation of the epicardial coronary arteries. This review summarizes the molecular and cellular mechanisms involved in the pathogenesis of coronary artery ectasia. Better identification of the pathophysiologic steps will shed light into the clinical significance and may have direct implications for the management strategies of this disease. Additionally, understanding the underlying etiology may help to improve treatment modalities specific to coronary ...

In vitro bioanalysis of drinking water from source to tap.

The presence of chemical pollutants in sources of drinking water is a key environmental problem threatening public health. Efficient removal of pollutants in drinking water treatment plants (DWTPs) is needed as well as methods for assessment of the total impact of all present chemicals on water quality. In the present study we have analyzed the bioactivity of water samples from source to tap, including effects of various water treatments in a DWTP, using a battery of cell-based bioassays, covering health-re...

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