168 research outputs found

    The Development of a Continuing Educational System for the College of the Bahamas with Implications for Third World Countries

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    Problem. The problem addressed in this study is what form adult education should take and how it should be organized and administered to provide maximum effect for The Commonwealth of the Bahamas, considering its geography. No systematic study has been undertaken with a view to develop such a continuing education system. Therefore, the purpose of this study is to develop a continuing education system for the College of the Bahamas. Method. The study utilized a developmental research approach to investigate the organization and administration of continuing education in institutions of higher education in the United States with a view to develop a continuing educational system for the College of the Bahamas. A letter containing seven questions covering organization, administration, program planning, and evaluation was sent to sixty institutions; fifty institutions (83.33 percent) responded to the questionnaire. Conclusions. 1. How should the Continuing Education Division of the College of the Bahamas be organized? The Continuing Education Division should have a centralized structure with a chief administrator being a director with responsibilities to the principal of the college. Additionally, the Division should be organized into departments based upon the Division\u27s functions. 2. What relationship should exist between the Continuing Education Division and other divisions of the college? A spirit of cooperation should exist with the other academic divisions and the Director of Continuing Education should be afforded equal status to the other academic divisions of the institution. 3. What programs and activities should be sponsored by the Division? The majority of the respondents offered a variety of credit and non-credit programs that met the needs of the clientele. 4. What procedures would best implement these programs and activities? The majority of respondents in following the program planning process began by conducting a needs-assessment. 5. What financial support would be needed? Financial support would be needed to cover the instructional and administration cost of the program. 6. What facilities would adequately deliver the program? The selection of a site and the environment of the facility should enhance adult learning. 7. What evaluation procedures and measures would be most used? The majority of the respondents distributed standardized evaluation forms to the participants at the end of the programs to evaluate the activity

    The Genes for Myelin Basic Protein in Normal and Shiverer Mutant Mice

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    A cDNA library was constructed from the brains of 18 day old rats, and was screened with a synthetic DNA probe to yield clones representing myelin basic protein (MBP). One 1.9 kb clone was sequenced and found to encode the 14 kd MBP. Using this clone as a hybridization probe, cosmid clones from a library of wild type mouse DNA were selected and characterized. One clone was shown to carry five exons which encode 14 kd MBP, distributed over a 32 kb region. A sixth exon was detected with a synthetic DNA probe, and was found to encode the 41 amino acids which distinguish 18.5 kd from 14 kd MBP. The 5' end ot the gene was mapped with S1 nuclease protection and primer extension experiments to a position 47 bp 5' of the initator codon for MBP synthesis. It was shown that the gene cloned is probably the only MBP gene in the mouse genome. Cloned DNAs were used to analyze the MBP gene and its expression in the myelin deficient mutant mouse shiverer. It was shown that a deletion has removed five out of six MBP exons, leaving only the 5'-most exon and 13 kb of the first intervening sequence. The deletion completely prevents expression of normal 2.1 kb MBP mRNAs, but a 16-fold lower number of transcripts are observed which initiate correctly at the 5' end of the first exon, are not correctly spliced, and are rarely polyadenylated. If translated, they would direct synthesis of a 61 amino acid peptide containing the first 56 amino acids of MBP. The MBP gene was mapped to mouse chromosome 18 by hybridization of MBP probes with DNA from Chinese hamster-mouse hybrid cell lines, showing it to be linked to the shiverer mutation. It is proposed that the partial deletion of the MBP gene is the primary lesion of the shiverer mutation.</p

    Generational Impacts of 1930s Housing Discrimination and the Imperative Need for the Healthy Start Initiative to Address Structural Racism

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    For nearly three decades, Healthy Start Initiative(HSI) has served communities with high rates of adverse pregnancy outcomes--with the goal to lower them by 50%. Despite a large focus on social determinants of health, HSI has narrowly addressed racism. The effects of legal housing discrimination continue to be felt and have profound implications for pregnancy. To understand the historical context of racism in these communities, we geospatially evaluated the relationship between HSI service areas and Home-Owners Loan Corporation(HOLC) graded maps. Using data from John Snow Inc, National Healthy Start Association, and Mapping Inequality we found that 73 of 100 communities served by HSI were subject to anti-Black housing discrimination. For majority, over 60% of the HOLC-assessed areas in the service areas were red or yellow graded. Given this we propose three programmatic shifts that HSI can implement to address structural racism and broaden their policy and advocacy efforts in the communities they serve

    Crystal field effects on the reactivity of aluminum-copper cluster anions

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    The limits and useful modifications of the jellium model are of great interest in understanding the properties of metallic clusters, especially involving bimetallic systems. We have measured the relative reactivity of CuAl−n clusters (n=11–34) with O2. An odd-even alternation is observed that is in accordance with spin-dependant etching, and CuAl−22is observed as a “magic peak.” The etching resistance of CuAl−22 is explained by an unusually large splitting of the 2D10 subshell that occurs because of a geometric distortion of the cluster that may also be understood as a crystal field splitting of the superatomic orbitals

    CIDP Diagnostic Criteria and Response to Treatment

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    AbstractIntroduction: Diagnostic criteria for CIDP have been proven useful for clinical trials. However, use of these criteria in clinics has been limited by time constraints and unknown usefulness in predicting outcomes. Methods: A retrospective chart review of CIDP patients at the University of Kansas seen between 2008 and 2014 was performed. We determined the diagnostic criteria fulfilled by each patient and assessed treatment responses. A positive response was defined by improvement sensory or motor examination as determined by a neuromuscular physician.Results: There were 38 total patients included in the study. The response rate to IVIG in patients who fulfilled EFNS/PNS criteria was 20/22 (90.1%). Among patients who fulfilled AAN criteria, 8/9 (88.9%) responded positively to IVIG. Slightly lower response rates were seen in patients fulfilling INCAT criteria and Saperstein criteria at 10/15 (66.7%) and 12/17 (70.6%), respectively.Discussion: EFNS/PNS and AAN criteria can similarly predict IVIG treatment response

    The Role of Native Language and the Fundamental Design of the Auditory System in Detecting Rhythm Changes

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    Accepted December 13, 2018Purpose: We investigated whether rhythm discrimination is mainly driven by the native language of the listener or by the fundamental design of the human auditory system and universal cognitive mechanisms shared by all people irrespective of rhythmic patterns in their native language. Method: In multiple experiments, we asked participants to listen to 2 continuous acoustic sequences and to determine whether their rhythms were the same or different (AX discrimination). Participants were native speakers of 4 languages with different rhythmic properties (Spanish, French, English, and German) to understand whether the predominant rhythmic patterns of a native language affect sensitivity, bias, and reaction time in detecting rhythmic changes in linguistic (Experiment 2) and in nonlinguistic (Experiments 1 and 2) acoustic sequences. We examined sensitivity and bias measures, as well as reaction times. We also computed Bayes factors in order to assess the effect of native language. Results: All listeners performed better (i.e., responded faster and manifested higher sensitivity and accuracy) when detecting the presence or absence of a rhythm change when the 1st stimulus in an AX test pair exhibited regular rhythm (i.e., a syllable-timed rhythmic pattern) than when the 1st stimulus exhibited irregular rhythm (i.e., stress-timed rhythmic pattern). This result pattern was observed both on linguistic and nonlinguistic stimuli and was not modulated by the native language of the participant. Conclusion: We conclude that rhythm change detection is a fundamental function of a processing system that relies on general auditory mechanisms and is not modulated by linguistic experience.The authors acknowledge support from Spanish Ministry of Economy and Competitiveness Grant PSI2017-82563-P (awarded to A. G. S.), the “Severo Ochoa” Programme for Centres/Units of Excellence in R&D Grant SEV-2015-490 (BCBL), and the Basque Foundation for Science Grant IKERBASQUE (awarded to A. G. S. and M. O.). D. M. G. was supported by Grant PIA/Basal FB0003 from the Chilean Research Council. L. P. was supported by the Spanish Ministry of Economy and Competitiveness via Juan de la Cierva fellowship

    The qualification of an enrichment biomarker for clinical trials targeting early stages of Parkinson’s disease

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    As therapeutic trials target early stages of Parkinson’s disease (PD), appropriate patient selection based purely on clinical criteria poses significant challenges. Members of the Critical Path for Parkinson’s Consortium formally submitted documentation to the European Medicines Agency (EMA) supporting the use of Dopamine Transporter (DAT) neuroimaging in early PD. Regulatory documents included a comprehensive literature review, a proposed analysis plan of both observational and clinical trial data, and an assessment of biomarker reproducibility and reliability. The research plan included longitudinal analysis of the Parkinson Research Examination of CEP-1347 Trial (PRECEPT) and the Parkinson’s Progression Markers Initiative (PPMI) study to estimate the degree of enrichment achieved and impact on future trials in subjects with early motor PD. The presence of reduced striatal DAT binding based on visual reads of single photon emission tomography (SPECT) scans in early motor PD subjects was an independent predictor of faster decline in UPDRS Parts II and III as compared to subjects with scans without evidence of dopaminergic deficit (SWEDD) over 24 months. The EMA issued in 2018 a full Qualification Opinion for the use of DAT as an enrichment biomarker in PD trials targeting subjects with early motor symptoms. Exclusion of SWEDD subjects in future clinical trials targeting early motor PD subjects aims to enrich clinical trial populations with idiopathic PD patients, improve statistical power, and exclude subjects who are unlikely to progress clinically from being exposed to novel test therapeutics

    Broad targeting of resistance to apoptosis in cancer

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    Apoptosis or programmed cell death is natural way of removing aged cells from the body. Most of the anti-cancer therapies trigger apoptosis induction and related cell death networks to eliminate malignant cells. However, in cancer, de-regulated apoptotic signaling, particularly the activation of an anti-apoptotic systems, allows cancer cells to escape this program leading to uncontrolled proliferation resulting in tumor survival, therapeutic resistance and recurrence of cancer. This resistance is a complicated phenomenon that emanates from the interactions of various molecules and signaling pathways. In this comprehensive review we discuss the various factors contributing to apoptosis resistance in cancers. The key resistance targets that are discussed include (1) Bcl-2 and Mcl-1 proteins; (2) autophagy processes; (3) necrosis and necroptosis; (4) heat shock protein signaling; (5) the proteasome pathway; (6) epigenetic mechanisms; and (7) aberrant nuclear export signaling. The shortcomings of current therapeutic modalities are highlighted and a broad spectrum strategy using approaches including (a) gossypol; (b) epigallocatechin-3-gallate; (c) UMI-77 (d) triptolide and (e) selinexor that can be used to overcome cell death resistance is presented. This review provides a roadmap for the design of successful anti-cancer strategies that overcome resistance to apoptosis for better therapeutic outcome in patients with cancer

    Pan-Cancer Analysis of lncRNA Regulation Supports Their Targeting of Cancer Genes in Each Tumor Context

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    Long noncoding RNAs (lncRNAs) are commonly dys-regulated in tumors, but only a handful are known toplay pathophysiological roles in cancer. We inferredlncRNAs that dysregulate cancer pathways, onco-genes, and tumor suppressors (cancer genes) bymodeling their effects on the activity of transcriptionfactors, RNA-binding proteins, and microRNAs in5,185 TCGA tumors and 1,019 ENCODE assays.Our predictions included hundreds of candidateonco- and tumor-suppressor lncRNAs (cancerlncRNAs) whose somatic alterations account for thedysregulation of dozens of cancer genes and path-ways in each of 14 tumor contexts. To demonstrateproof of concept, we showed that perturbations tar-geting OIP5-AS1 (an inferred tumor suppressor) andTUG1 and WT1-AS (inferred onco-lncRNAs) dysre-gulated cancer genes and altered proliferation ofbreast and gynecologic cancer cells. Our analysis in-dicates that, although most lncRNAs are dysregu-lated in a tumor-specific manner, some, includingOIP5-AS1, TUG1, NEAT1, MEG3, and TSIX, synergis-tically dysregulate cancer pathways in multiple tumorcontexts

    Pan-cancer Alterations of the MYC Oncogene and Its Proximal Network across the Cancer Genome Atlas

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    Although theMYConcogene has been implicated incancer, a systematic assessment of alterations ofMYC, related transcription factors, and co-regulatoryproteins, forming the proximal MYC network (PMN),across human cancers is lacking. Using computa-tional approaches, we define genomic and proteo-mic features associated with MYC and the PMNacross the 33 cancers of The Cancer Genome Atlas.Pan-cancer, 28% of all samples had at least one ofthe MYC paralogs amplified. In contrast, the MYCantagonists MGA and MNT were the most frequentlymutated or deleted members, proposing a roleas tumor suppressors.MYCalterations were mutu-ally exclusive withPIK3CA,PTEN,APC,orBRAFalterations, suggesting that MYC is a distinct onco-genic driver. Expression analysis revealed MYC-associated pathways in tumor subtypes, such asimmune response and growth factor signaling; chro-matin, translation, and DNA replication/repair wereconserved pan-cancer. This analysis reveals insightsinto MYC biology and is a reference for biomarkersand therapeutics for cancers with alterations ofMYC or the PMN
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