Catatonia-asossicated urinary retention in geriatric patients: a case series report.

Background: Catatonia is an underdiagnosed neuropsychiatric condition, with only a few studies focusing on medical sequalae among elderly populations. Delayed treatment results in complications with high morbidity and mortality. Among elderly individuals, one such complication is urinary retention.

Chromosomal-level reference genome assembly of muskox (Ovibos moschatus) from Banks Island in the Canadian Arctic, a resource for conservation genomics.

The muskox (Ovibos moschatus), an integral component and iconic symbol of arctic biocultural diversity, is under threat by rapid environmental disruptions from climate change. We report a chromosomal-level haploid genome assembly of a muskox from Banks Island in the Canadian Arctic Archipelago. The assembly has a contig N50 of 44.

Chromosomal-level reference genome assembly of the North American wolverine (Gulo gulo luscus): a resource for conservation genomics.

We report a chromosomal-level genome assembly of a male North American wolverine (Gulo gulo luscus) from the Kugluktuk region of Nunavut, Canada. The genome was assembled directly from long-reads, comprising: 758 contigs with a contig N50 of 36.6 Mb; contig L50 of 20; base count of 2.

Simultaneous imaging of two-phase velocities in particle-laden flows by two-color optical phase discrimination.

In this Letter, we present a particle image/tracking velocimetry (PIV/PTV) technique for simultaneous velocity measurement of both fluid and particle phases, adopting newly developed optical phase discrimination methods and novel optical particles. Spherical acrylic (PMMA) particles of diameter ∼(100µ) were used as the particle phase, while fine : phosphors of diameter ∼(1µ) were used as the fluid tracer. Under Nd:YAG 355 nm laser excitation, both the laser-induced fluorescence (LIF) from PMMA and laser-induced phosphorescence (LIP) from : provided sufficiently strong signals for PIV imaging with two non-intensified cameras and were clearly separable for phase discrimination using spectral filters and temporal profiles.

Particle velocity measurement within a free-falling particle curtain using microscopic shadow velocimetry.

We report an optical method for particle velocity measurement that is suitable for the measurement of particle velocities within dense particle-laden flows with high spatial resolution. The technique is based on particle shadow velocimetry with the use of a long-distance microscopic lens for images collection. The narrow depth of field of the lens allows particles within the focal plane to have much higher pattern intensities than those outside it on the collected images.

Systematic Review and Meta-analysis: Effectiveness of Corticosteroids in Treating Adults With Acute Vestibular Neuritis.

Objectives: To determine whether steroids are effective in treating adults with acute vestibular neuritis.

Data Sources: PubMed, Embase, CINAHL, Cochrane CENTRAL, Web of Science, CAB Abstract, ICTRP, LILACS, PEDRO, ClinicalTrials.Gov, Google Scholar, NARIC, and OT Seeker.

Determination of 30 Synthetic Cathinones in Postmortem Blood Using LC-MS-MS.

Synthetic cathinones, commonly referred to as "bath salts," are powerful amphetamine-like psychostimulants, and new derivatives are constantly appearing in the illicit market to evade judicial consequences. To keep up with these new stimulant drugs, a low-sample-size liquid chromatography-tandem mass spectrometry method was validated to quantify 30 synthetic cathinones in postmortem blood including N-ethylpentylone and eutylone. Mixed mode cation exchange solid-phase extraction using 0.

Iron oxide and various metal oxide nanotubes engineered by one-pot double galvanic replacement based on reduction potential hierarchy of metal templates and ion precursors.

A one-pot double galvanic approach was explored for the rational synthesis of metal oxide nanotubes, predictable based on the reduction potential hierarchy of templates and ion precursors (, Ag nanowire substrate is oxidized by MnO ions and it is consecutively reduced by Fe ions to form an FeO nanotube). This method generated a variety of metal oxide nanotubes a redox potential landscape.

Stability of Synthetic Piperazines in Human Whole Blood.

While circumventing legislative controls, synthetic piperazines are encountered as "legal" alternatives to ecstasy. Unforeseeable challenges may delay quantitative analysis of these compounds in biological fluids. Enzymatic reactions, matrix interferences and limited knowledge of analyte stability further complicate interpretation of calculated concentrations.

Acceptance and perceived usefulness of robots to assist with activities of daily living and healthcare tasks.

As the number of older adults living with chronic conditions continues to rise, they will require assistance with activities of daily living (ADL) and healthcare tasks to continue living independently in their homes. One proposed solution to assist with the care needs of an aging population and a shrinking healthcare workforce is robotic technology. Using a cross-sectional survey design, we purposively sampled adults (≥18 years old) to assess generational acceptance and perceived usefulness of robots to assist with ADLs, healthcare tasks, and evaluate acceptance of robotic healthcare assistance across different settings.

Decreasing Total Medication Exposure and Length of Stay While Completing Withdrawal for Neonatal Abstinence Syndrome during the Neonatal Hospital Stay.

Introduction: Neonatal abstinence syndrome (NAS) is a rapidly growing public health concern that has considerably increased health-care utilization and health-care costs. In an effort to curtail costs, attempts have been made to complete withdrawal as an outpatient. Outpatient therapy has been shown to prolong exposure to medications, which may negatively impact neurodevelopmental and behavioral outcomes.

Role of the Astroglial Glutamate Exchanger xCT in Ventral Hippocampus in Resilience to Stress.

We demonstrate that stress differentially regulates glutamate homeostasis in the dorsal and ventral hippocampus and identify a role for the astroglial xCT in ventral dentate gyrus (vDG) in stress and antidepressant responses. We provide an RNA-seq roadmap for the stress-sensitive vDG. The transcription factor REST binds to xCT promoter in co-occupancy with the epigenetic marker H3K27ac to regulate expression of xCT, which is also reduced in a genetic mouse model of inherent susceptibility to depressive-like behavior.

Effect of atypical antipsychotics on body weight in geriatric psychiatric inpatients.

Background: Studies suggest that antipsychotic-induced weight gain is not a great concern in the elderly population. This study investigated the weight change in elderly patients with various treatment duration and antipsychotics. Part 1 of the study was to determine whether atypical antipsychotics induced weight change in elderly patients.

A Viral Immunoevasin Controls Innate Immunity by Targeting the Prototypical Natural Killer Cell Receptor Family.

Natural killer (NK) cells play a key role in innate immunity by detecting alterations in self and non-self ligands via paired NK cell receptors (NKRs). Despite identification of numerous NKR-ligand interactions, physiological ligands for the prototypical NK1.1 orphan receptor remain elusive.

The Treatment of Disruptive Vocalization in Dementia (Behavioral and Psychological Symptoms of Dementia) With Electroconvulsive Therapy: A Case Series.

Objective: There is emerging evidence that electroconvulsive therapy (ECT) can help with the behavioral and psychological symptoms of dementia. One of the most distressing behavioral symptoms of dementia is disruptive vocalization. Previous small case series have suggested that antidepressants and ECT can be beneficial for this distressing condition.

Synthesizing Evidence in Public Policy Contexts: The Challenge of Synthesis When There Are Only a Few Studies.

For a variety of reasons, researchers and evidence-based clearinghouses synthesizing the results of multiple studies often have very few studies that are eligible for any given research question. This situation is less than optimal for meta-analysis as it is usually practiced, that is, by employing inverse variance weights, which allows more informative studies to contribute relatively more to the analysis. This article outlines the choices available for synthesis when there are few studies to synthesize.

Factors affecting recruitment into psychiatry: a canadian experience.

Objective: There is a projected shortage of psychiatrists in Canada in forthcoming years. This study assessed factors in medical school education that are associated with students selecting psychiatry first and matching as a discipline.

Method: The Canadian Organization of Undergraduate Psychiatry Educators (COUPE) conducted telephone interviews and sent e-mail questionnaires to the 17 medical schools across Canada; all schools provided data for 2012.

Avian photoreceptor patterns represent a disordered hyperuniform solution to a multiscale packing problem.

Optimal spatial sampling of light rigorously requires that identical photoreceptors be arranged in perfectly regular arrays in two dimensions. Examples of such perfect arrays in nature include the compound eyes of insects and the nearly crystalline photoreceptor patterns of some fish and reptiles. Birds are highly visual animals with five different cone photoreceptor subtypes, yet their photoreceptor patterns are not perfectly regular.

A man with urethral polyembolokoilamania successfully treated with electroconvulsive therapy.

Polyembolokoilamania is the act of inserting foreign objects into bodily orifices and can be classified as a paraphilia if done for sexual pleasure. Although problematic sexual behaviors are common in dementia, the majority of case reports of urethral polyembolokoilamania in the elderly have occurred in the absence of dementia or cognitive impairment. Little empirical evidence exists for managing problematic sexual behaviors in the elderly and in dementia.

Inappropriate sexual behavior in a geriatric population.

Background: Inappropriate sexual behavior (ISB) is an important topic in geriatrics; etiologies remain unclear and evidence for the efficacy of treatment strategies is limited. The aims of this study were to provide a description of the phenomenology of ISB in the geriatric population, to identify potential contributing factors, and to review the efficacy of interventions aimed at reducing ISB.

Methods: A retrospective chart review was conducted of ten patients admitted to an academic inpatient geriatric psychiatry ward because of their ISB (study group) and ten patients matched in age and gender (control group).

Predicting dislocation climb and creep from explicit atomistic details.

Here we report kinetic Monte Carlo simulations of dislocation climb in heavily deformed, body-centered cubic iron comprising a supersaturation of vacancies. This approach explicitly incorporates the effect of nonlinear vacancy-dislocation interaction on vacancy migration barriers as determined from atomistic calculations, and enables observations of diffusivity and climb over time scales and temperatures relevant to power-law creep. By capturing the underlying microscopic physics, the calculated stress exponents for steady-state creep rates agree quantitatively with the experimentally measured range, and qualitatively with the stress dependence of creep activation energies.

Atomistic simulation of creep in a nanocrystal.

We describe a method to simulate on macroscopic time scales the stress relaxation in an atomistic nanocrystal model under an imposed strain. Using a metadynamics algorithm for transition state pathway sampling we follow the full evolution of a classical anelastic relaxation event, with relaxation times governed by the nanoscale microstructure imperfections in the solid. We show that probing this sensitive variation leads to mechanistic insights that reveal a direct correlation between system-level relaxation behavior and localized atomic displacements in the vicinity of the nanostructured defects, in turn implying a unit mechanism for self-organized plastic response.

Hydrogen-vacancy interactions in Fe-C alloys.

Energetics and concentrations of hydrogen-containing point defect clusters (PDCs) in Fe-C alloys are calculated and cast into a PDC dominance diagram. Because of the strong binding effects of iron vacancies on the stability of the clusters, hydrogen accumulation requires the total hydrogen and vacancy concentrations to be comparable. As a result of the interplay between repulsive and attractive binding processes, PDC populations in Fe-C-H effectively decouple into the binary systems Fe-C and Fe-H.

Many-body potential for point defect clusters in Fe-C alloys.

Modeling the consequences of crystalline defects requires efficient interaction sampling. Empirical potentials can identify relevant pathways if the energetics and configurations of competing defects are captured. Here, we develop such a potential for an alloy of arbitrary point defect concentration, body-centered cubic alpha-Fe supersaturated in C.