H3++H_3^{++} molecular ions can exist in strong magnetic fields

Using the variational method it is shown that for magnetic fields $B\geq 10^{11}$ G there can exist a molecular ion $H_3^{++}$.Comment: LaTeX, 7 pp, 1 table, 4 figures. Title modified. Consideration of the longitudinal size of the system was adde

Roles of Candida albicans Mig1 and Mig2 in glucose repression, pathogenicity traits, and SNF1 essentiality.

Metabolic adaptation is linked to the ability of the opportunistic pathogen Candida albicans to colonize and cause infection in diverse host tissues. One way that C. albicans controls its metabolism is through the glucose repression pathway, where expression of alternative carbon source utilization genes is repressed in the presence of its preferred carbon source, glucose. Here we carry out genetic and gene expression studies that identify transcription factors Mig1 and Mig2 as mediators of glucose repression in C. albicans. The well-studied Mig1/2 orthologs ScMig1/2 mediate glucose repression in the yeast Saccharomyces cerevisiae; our data argue that C. albicans Mig1/2 function similarly as repressors of alternative carbon source utilization genes. However, Mig1/2 functions have several distinctive features in C. albicans. First, Mig1 and Mig2 have more co-equal roles in gene regulation than their S. cerevisiae orthologs. Second, Mig1 is regulated at the level of protein accumulation, more akin to ScMig2 than ScMig1. Third, Mig1 and Mig2 are together required for a unique aspect of C. albicans biology, the expression of several pathogenicity traits. Such Mig1/2-dependent traits include the abilities to form hyphae and biofilm, tolerance of cell wall inhibitors, and ability to damage macrophage-like cells and human endothelial cells. Finally, Mig1 is required for a puzzling feature of C. albicans biology that is not shared with S. cerevisiae: the essentiality of the Snf1 protein kinase, a central eukaryotic carbon metabolism regulator. Our results integrate Mig1 and Mig2 into the C. albicans glucose repression pathway and illuminate connections among carbon control, pathogenicity, and Snf1 essentiality

Mechanisms of Candida albicans Trafficking to the Brain

During hematogenously disseminated disease, Candida albicans infects most organs, including the brain. We discovered that a C. albicans vps51Δ/Δ mutant had significantly increased tropism for the brain in the mouse model of disseminated disease. To investigate the mechanisms of this enhanced trafficking to the brain, we studied the interactions of wild-type C. albicans and the vps51Δ/Δ mutant with brain microvascular endothelial cells in vitro. These studies revealed that C. albicans invasion of brain endothelial cells is mediated by the fungal invasins, Als3 and Ssa1. Als3 binds to the gp96 heat shock protein, which is expressed on the surface of brain endothelial cells, but not human umbilical vein endothelial cells, whereas Ssa1 binds to a brain endothelial cell receptor other than gp96. The vps51Δ/Δ mutant has increased surface expression of Als3, which is a major cause of the increased capacity of this mutant to both invade brain endothelial cells in vitro and traffic to the brain in mice. Therefore, during disseminated disease, C. albicans traffics to and infects the brain by binding to gp96, a unique receptor that is expressed specifically on the surface of brain endothelial cells

An annotated list of the Lepidoptera of Honduras

A biodiversity inventory of the Lepidoptera of Pico Bonito National Park and vicinity, in the Department of Atlantida of northern Honduras, was initiated in 2009 to obtain baseline data. We present a revised checklist of Honduran butterfly species (updated from the initial 1967 lists), as well as the first comprehensive list of Honduran moths. Our updated list includes 550 species of Papilionoidea, 311 Hesperioidea, and 1,441 moth species

An annotated list of the Lepidoptera of Honduras

A biodiversity inventory of the Lepidoptera of Pico Bonito National Park and vicinity, in the Department of Atlantida of northern Honduras, was initiated in 2009 to obtain baseline data. We present a revised checklist of Honduran butterfly species (updated from the initial 1967 lists), as well as the first comprehensive list of Honduran moths. Our updated list includes 550 species of Papilionoidea, 311 Hesperioidea, and 1,441 moth species

The Perceived Impact of Online Student Evaluation to the Performance Among Faculty from PUP Branches and Campuses: Basis for Policy Review and Implementation

The study aims to determine the perception of the PUP faculty from branches and campuses about the student’s online evaluation and investigate the implication of results to their performance as teacher in higher education institution. Descriptive and inferential statistics were used to interpret data. The researchers utilizedprimary data through self-administered survey questionnaire and secondary data. Findings revealed that in general, the faculty find the content in four areas of evaluation namely: commitment, knowledge of the subject, teaching for independent learning and management, highly acceptable. They agree with the rating scaleand its equivalent description. The perceived performance of the faculty in four areas showed improvement. The faculty recognized that their personal and social development had improved. When respondents were grouped according to highest educational attainment, significant difference was observed on commitment area. Majority of the faculty felt that students do not fully understand the content of the evaluation instrument, and worst, they use the evaluation as the chance to get even with the professors they dislike. It is recommended to simplify the statements in the instrument. To substantiate the comments and maintain objectivity, the researchers recommend inclusion of students’ personal assessment regarding learning. To further improve the performance of the faculty, deans and chairpersons may identify the administrative concerns of their faculty and identify areas that need training, retraining, coaching, and/or policy revision. Keywords: effective teaching, instruction, faculty performance, student evaluatio

Talking about risk in the context of genomic tests (TARGET): development and evaluation of an educational programme for clinicians

Purpose: Gene expression profiling (GEP) test scores calculate risks of recurrence and likely benefit of adjuvant chemotherapy in ER positive, HER2 negative, early stage breast cancer. As health literacy and numeracy skills in the general population are poor, healthcare professionals (HCPs) require a wide repertoire of communication skills to explain clearly risk of recurrence scores (RSs) and uncertainty. We developed and evaluated an educational program for HCPs discussing GEP test results and adjuvant treatment. Methods: Eight hour workshops contained elements aimed at improving knowledge, communication skills, and self-awareness; these included:- the science underpinning GEP tests, an interactive risk psychology lecture, exercises and facilitated group discussions regarding 7 filmed scenarios involving discussions about high, intermediate and low RSs. Attendees were recorded explaining RSs with patient simulators pre and post workshop. Researchers blinded to time-point, analysed recordings using a study specific scoring system. Primary objective outcomes were improvements post workshop in HCPs’ competence and confidence when communicating 17 pre-specified key information areas. We estimated odds ratios (OR) using conditional logistic regression to compare pre and post workshop scores. Results: 65 HCPs attended. Objective analyses revealed significant positive shifts post-workshop which included explaining:- GEP tests (OR=2.98; 95% CI, 1.38 to 6.42; P=.001), recurrence RSs (OR=3.99; 95% CI, 1.72 to 9.25; P<.001), benefits of chemotherapy (OR= 3.99; 95% CI, 1.82 to 8.75; P<.001; and harms OR=2.31; 95% CI, 1.37 to 3.92; P<.001) using jargon free language (OR=5.29; 95% CI, 2.27 to 12.35; P<.001). Patient simulator assessments also showed significant improvements as did HCPs’ self-assessments and ratings of their self-confidence when discussing different GEP tests with diverse patient types (P<.001). Conclusion: These short, intensive, interactive TARGET workshops significantly improved HCPs’ communication about GEP results in ways likely to promote more informed decision-making by patients about chemotherapy

SR-Like RNA-binding protein Slr1 affects Candida albicans filamentation and virulence

Candida albicans causes both mucosal and disseminated infections, and its capacity to grow as both yeast and hyphae is a key virulence factor. Hyphal formation is a type of polarized growth, and members of the SR (serine-arginine) family of RNA-binding proteins influence polarized growth of both Saccharomyces cerevisiae and Aspergillus nidulans. Therefore, we investigated whether SR-like proteins affect filamentous growth and virulence of C. albicans. BLAST searches with S. cerevisiae SR-like protein Npl3 (ScNpl3) identified two C. albicans proteins: CaNpl3, an apparent ScNpl3 ortholog, and Slr1, another SR-like RNAbinding protein with no close S. cerevisiae ortholog. Whereas ScNpl3 was critical for growth, deletion of NPL3 in C. albicans resulted in few phenotypic changes. In contrast, the slr1δ/δ mutant had a reduced growth rate in vitro, decreased filamentation, and impaired capacity to damage epithelial and endothelial cells in vitro. Mice infected intravenously with the slr1δ/δ mutant strain had significantly prolonged survival compared to that of mice infected with the wild-type or slr1δ/δ mutant complemented with SLR1 (slr1δ/δ+SLR1) strain, without a concomitant decrease in kidney fungal burden. Histopathology, however, revealed differential localization of slr1δ/δ hyphal and yeast morphologies within the kidney. Mice infected with slr1δ/δ cells also had an increased brain fungal burden, which correlated with increased invasion of brain, but not umbilical vein, endothelial cells in vitro. The enhanced brain endothelial cell invasion was likely due to the increased surface exposure of the Als3 adhesin on slr1δ/δ cells. Our results indicate that Slr1 is an SR-like protein that influences C. albicans growth, filamentation, host cell interactions, and virulence. © 2013, American Society for Microbiology