763 research outputs found

    Teaching Competencies for the Online Environment

    Get PDF
    The goals of this study are to identify key competency areas that lead to success in online instruction and to develop a framework that supports professional development and self- assessment. To identify the key competency areas, skills and behaviours presented within current literature were analyzed. Secondly, gaps were identified and levels of competence were determined within each key competency area. The resulting analysis produced the Online Teaching Competency (OTC) Matrix including five competency areas: Community & Netiquette, Active Teaching/Facilitating, Instructional Design, Tools & Technology, and Leadership & Instruction. This leveled competency matrix can be used to inform professional development in the online teaching environment and is also a useful guide in the areas of self- assessment, portfolio design, and the development and evaluation of professional development opportunities

    Exploration of transitional life events in individuals with Friedreich ataxia: Implications for genetic counseling

    Get PDF
    <p>Abstract</p> <p>Background</p> <p>Human development is a process of change, adaptation and growth. Throughout this process, transitional events mark important points in time when one's life course is significantly altered. This study captures transitional life events brought about or altered by Friedreich ataxia, a progressive chronic illness leading to disability, and the impact of these events on an affected individual's life course.</p> <p>Methods</p> <p>Forty-two adults with Friedreich ataxia (18-65y) were interviewed regarding their perceptions of transitional life events. Data from the interviews were coded and analyzed thematically using an iterative process.</p> <p>Results</p> <p>Identified transitions were either a direct outcome of Friedreich ataxia, or a developmental event altered by having the condition. Specifically, an awareness of symptoms, fear of falling and changes in mobility status were the most salient themes from the experience of living with Friedreich ataxia. Developmental events primarily influenced by the condition were one's relationships and life's work.</p> <p>Conclusions</p> <p>Friedreich ataxia increased the complexity and magnitude of transitional events for study participants. Transitional events commonly represented significant loss and presented challenges to self-esteem and identity. Findings from this study help alert professionals of potentially challenging times in patients' lives, which are influenced by chronic illness or disability. Implications for developmental counseling approaches are suggested for genetic counseling.</p> <p>Background</p> <p>Human development can be described in terms of key transitional events, or significant times of change. Transitional events initiate shifts in the meaning or direction of life and require the individual to develop skills or utilize coping strategies to adapt to a novel situation <abbrgrp><abbr bid="B1">1</abbr><abbr bid="B2">2</abbr></abbrgrp>. A successful transition has been defined as the development of a sense of mastery over the changed event <abbrgrp><abbr bid="B3">3</abbr></abbrgrp>.</p> <p>Transitions can be influenced by a variety of factors including one's stage of development, such as graduation from high school, historical events, including war, and idiosyncratic factors, such as health status <abbrgrp><abbr bid="B4">4</abbr><abbr bid="B5">5</abbr></abbrgrp>. Of particular interest in the present study are transitional life events, brought about or altered by progressive chronic illness and disability, and the impact of these events on the lives of affected individuals.</p> <p>It has been recognized that the clinical characteristics of a chronic illness or disability may alter the course and timing of many developmentally-related transitional events <abbrgrp><abbr bid="B6">6</abbr></abbrgrp>. For example, conditions associated with a shortened lifespan may cause an individual to pursue a career with a shorter course of training <abbrgrp><abbr bid="B6">6</abbr></abbrgrp>. Specific medical manifestations may also promote a lifestyle incongruent with developmental needs <abbrgrp><abbr bid="B6">6</abbr><abbr bid="B7">7</abbr></abbrgrp>. For example, an adolescent with a disability may have difficulty achieving autonomy because of his/her physical dependence on others.</p> <p>In addition to the aforementioned effects of chronic illness and disability on developmentally-related transitional events, a growing body of literature has described disease-related transitional events: those changes that are a direct result of chronic illness and disability. Diagnosis has received attention as being a key disease-related transitional event <abbrgrp><abbr bid="B8">8</abbr><abbr bid="B9">9</abbr></abbrgrp>. Studies have also noted other disease transitions related to illness trajectory <abbrgrp><abbr bid="B10">10</abbr></abbrgrp>, as the clinical features of the disease may require the individual to make specific adaptations. Disease-related events have also been described in terms of accompanying psychological processes, such as one's awareness of differences brought about by illness <abbrgrp><abbr bid="B11">11</abbr></abbrgrp>.</p> <p>While disease-related events are seemingly significant, the patient's perception of the events is varied. Some events may be perceived as positive experiences for the individual. For example, a diagnosis may end years of uncertainty. Some individuals may perceive these transitional events as insignificant, as they have accommodated to the continual change brought about by a chronic disease <abbrgrp><abbr bid="B12">12</abbr><abbr bid="B13">13</abbr></abbrgrp>.</p> <p>The aforementioned impact of disability and chronic illness on transitional events may create psychological stress. Developed by Lazarus and Folkman, the Transitional Model of Stress and Coping describes the process of adaptation to a health condition <abbrgrp><abbr bid="B14">14</abbr></abbrgrp>. This model purports that individuals first appraise a stressor and then utilize a variety of coping strategies in order to meet the stressor's demands <abbrgrp><abbr bid="B14">14</abbr></abbrgrp>. Thus, in the context of chronic illness, the ability of the individual to cope successfully with the stress of a health threat contributes to the process of overall adaptation to the condition.</p> <p>The process of adaptation can be more complex when the chronic illness or disability is progressive. Each transition brought about or altered by the disability may also represent additional loss, including the loss of future plans, freedom in social life and the ability to participate in hobbies <abbrgrp><abbr bid="B15">15</abbr></abbrgrp>. These losses may be accompanied by grief, uncertainty, and a continual need for adaptation <abbrgrp><abbr bid="B16">16</abbr><abbr bid="B17">17</abbr></abbrgrp>.</p> <p>Friedreich ataxia (FRDA) is one example of a progressive disorder, leading to adolescent and adult onset disability. To better understand patients' perceptions of key transitional events and the factors perceived to facilitate progression through these events, individuals with FRDA were interviewed.</p> <p>FRDA is a rare, progressive, neurodegenerative disorder affecting approximately one in 30,000 people in the United States <abbrgrp><abbr bid="B18">18</abbr></abbrgrp>. It equally affects both men and women. Individuals with FRDA experience progressive muscle weakness and loss of coordination in the arms and legs. For most patients, ataxia leads to motor incapacitation and full-time use of a wheelchair, commonly by the late teens or early twenties. Other complications such as vision and hearing impairment, dysarthria, scoliosis, diabetes mellitus and hypertrophic cardiomyopathy may occur <abbrgrp><abbr bid="B19">19</abbr><abbr bid="B20">20</abbr></abbrgrp>. Cardiomyopathy and respiratory difficulties often lead to premature death at an average age of 37 years <abbrgrp><abbr bid="B21">21</abbr></abbrgrp>. Currently, there are no treatments or cures for FRDA. Little is known about the specific psychological or psychosocial effects of the condition.</p> <p>FRDA is an autosomal recessive condition. The typical molecular basis of Friedreich ataxia is the expansion of a GAA trinucleotide repeat in both copies of the <it>FXN </it>gene <abbrgrp><abbr bid="B22">22</abbr></abbrgrp>. Age of onset usually occurs in late childhood or early adolescence. However, the availability of genetic testing has identified affected individuals with an adult form of the condition. This late-onset form is thought to represent approximately 10-15% of the total FRDA population <abbrgrp><abbr bid="B23">23</abbr></abbrgrp>.</p> <p>Health care providers of individuals with progressive, neurodegenerative disorders can help facilitate their patients' progression through transitional events. Data suggest that improvements should be made in the care of these individuals. Shaw et al. <abbrgrp><abbr bid="B24">24</abbr></abbrgrp> found that individualized care that helps to prepare patients for transition is beneficial. Beisecker et al. <abbrgrp><abbr bid="B25">25</abbr></abbrgrp> found that patients desire not only physical care from their providers, but also emotional and psychosocial support.</p> <p>Genetic counselors have an important opportunity to help patients with neuromuscular disorders progress through transitional events, as several of these conditions have a genetic etiology. Genetic counselors in pediatric and adult settings often develop long-term relationships with patients, due to follow-up care. This extended relationship is becoming increasingly common as genetic counselors move into various medical sub-specialties, such as neurology, ophthalmology, oncology and cardiology.</p> <p>The role of the genetic counselor in addressing the psychosocial needs of patients has been advocated, but rarely framed in the context of developmental events <abbrgrp><abbr bid="B26">26</abbr></abbrgrp>. Data suggest that patients may not expect a genetic counselor to address psychosocial needs <abbrgrp><abbr bid="B27">27</abbr></abbrgrp>. In a survey of genetic counseling patients, Wertz <abbrgrp><abbr bid="B28">28</abbr></abbrgrp> found a majority of respondents understood genetic conditions to have a moderate to serious effect on family life and finances, while almost half perceived there to be an effect on the spouse, quality of life, and the relationship between home and work. However, these topics were reportedly not discussed within genetic counseling sessions <abbrgrp><abbr bid="B27">27</abbr><abbr bid="B28">28</abbr></abbrgrp>. Overall, there is limited information about the experiences of transitional life events in FRDA, as well as a lack of recommendations for genetic counselors and other health care providers to assist patients through these events.</p> <p>Our study investigated perceptions of patients with Friedreich ataxia to 1) identify key transitional events and specific needs associated with events; 2) describe perception of factors to facilitate progression through the identified events; and 3) explore the actual or potential role of the health care provider in facilitating adaptation to the identified events. Data were used to make suggestions for developmental genetic counseling approaches in the context of ongoing care of clients with hereditary, progressive, neurodegenerative conditions.</p

    Part I: Application of Pd-Peppsi Complexes in Regioselective Cross-Coupling and Natural Product Total Synthesis; Part II: Room Temperature, Additive-Free Carbon-Sulfur Coupling Using Novel NHC-Pd Complexes

    Get PDF
    The first part of this research is focused on the development of an efficient method for the regioselective Suzuki-Miyaura cross-coupling of allylboronic acid pinacol ester derivatives with aryl and heteroaryl halides using Pd-PEPPSI-IPent (Pyridine Enhanced Pre-catalyst Preparation Stabilization and Initiation) that would be selective for the linear product. Pd-PEPPSI-IPent showed high selectivity (>97%) at the carbon of the allylboron reagent to generate the desired linear isomer under mild reaction conditions (i.e., THF, 70 C, 5M KOH). In the case of trisubstituted allylboronates with different substituents on the olefin, minor olefin geometry isomerization was observed (E/Z 80/20). Using this method, isoprenylated natural products methylated cathafuran A and lakoochin A were synthesized. Although the prenyl and geranyl side chains could be installed onto advanced 2-arylbenzofuran building blocks with high selectivity, significant amounts of an unwanted side product were observed. A dramatic solvent effect on the selectivity for the Directed ortho Metalation (DoM) of 1,5-dichloro-2,4-dimethoxybenzene, a key building block in our synthetic strategy to cathafuran A and lakoochin A, was observed. A series of time-course and labelling studies has revealed that deprotonation occurs exclusively at C3 followed by isomerization of the anion to C6 in THF. In contrast, when DoM was performed in Et2O, deprotonation again occurred selectively at C3, but now no isomerization occurs. Labeling studies also revealed that deuterium has an enormous kinetic isotope effect (KIE) that suppresses not only the original DoM reaction at C3 when deuterium is present there, but also suppresses isomerization to C6 when the label is at that site. The second part of this research focused on the development and application of new, easily activated NHCPdII pre-catalysts featuring a trans-oriented morpholine ligand in carbon-sulfur cross-coupling chemistry. [(IPent)PdCl2(morpholine)] was identified as the most active pre-catalyst, effectively coupling a variety of deactivated aryl halides with aryl, alkyl, and silyl thiols at ambient temperature. Mechanistic studies revealed that, in contrast to other common NHCPdII pre-catalysts, these complexes are rapidly reduced to the active NHCPd0 species in the presence of KOtBu, thus avoiding the need for additives, external activators, or cumbersome pre-activation steps

    Biological functions of galectin 15 (lgals15) in the ovine uterus

    Get PDF
    Galectins are proteins with 15 known members found in nearly all living organisms. They share a conserved CRD that binds beta-galactoside sugars, and functions to cross-link glycoproteins as well as glycolipid receptors on the surface of cells to initiate biological responses. Functional studies on the extracellular and intracellular roles of galectins implicate them in cell adhesion, chemoattraction and migration as well as growth, differentiation and apoptosis. Therefore, studies were conducted to identify functional roles of galectin 15 (LGALS15) during the periimplantation period of pregnancy in the sheep. The first study was designed to develop and characterize primary ovine trophectoderm cell lines for the study of the biological functions of LGALS15. Once characterized, these cell lines were used to investigate the role of LGALS15 in trophectoderm gene expression, development, growth, and survival. Two primary trophectoderm cell lines (oTr1 and oTrF) were developed, and they had characteristics similar to in vivo conceptus trophectoderm relative to gene expression, morphology, and migration and proved suitable as an in vitro model to investigate functional roles of LGALS15. The second study investigated LGALS15 function in trophectoderm cell adhesion. A dose-dependent increase in oTr cell attachment to LGALS15 was found that could be inhibited by cyclic GRGDS, but not GRADS, peptides. Mutation of the LDVRGD integrin binding sequence of LGALS15 to LADRAD decreased its ability to promote oTr cell attachment, whereas mutation of the CRD had little effect. LGALS15 induced formation of robust focal adhesions in oTr cells that were abolished by mutation of the LDVRGD sequence. The third study tested the hypothesis that LGALS15 is a secreted regulator of trophectoderm development and gene expression, as well as growth, migration, and apoptosis of trophoblast. LGALS15 moderately increased cellular proliferation, partially inhibited staurosporine elicited apoptosis, stimulated migration that was dependent on Jun N-terminal kinase (JNK), and initiated differential gene expression of oTr cells. Collectively, these results support the hypothesis that LGALS15 has a biological role in the peri-implantation stage of early pregnancy in the ovine uterus and stimulates trophectoderm cell gene expression, migration and attachment via integrin binding and activation which are critical to blastocyst elongation and implantation

    Stress mediates the relationship between sexual orientation and behavioral risk disparities

    Get PDF
    BACKGROUND: Growing evidence documents elevated behavioral risk among sexual-minorities, including gay, lesbian, and bisexual individuals; however, tests of biological or psychological indicators of stress as explanations for these disparities have not been conducted. METHODS: Data were from the 2005-2010 National Health and Nutrition Examination Survey, and included 9662 participants; 9254 heterosexuals, 153 gays/lesbians and 255 bisexuals. Associations between sexual orientation and tobacco, alcohol, substance, and marijuana use, and body mass index, were tested using the chi-square test. Stress, operationalized as depressive symptoms and elevated C-reactive protein, was tested as mediating the association between sexual orientation and behavioral health risks. Multiple logistic regression was used to test for mediation effects, and the Sobel test was used to evaluate the statistical significance of the meditating effect. RESULTS: Gays/lesbians and bisexuals were more likely to report current smoking (p < .001), a lifetime history of substance use (p < .001), a lifetime history of marijuana use (p < .001), and a lifetime period of risky drinking (p = .0061). The largest disparities were observed among bisexuals. Depressive symptoms partially mediated the association between sexual orientation and current smoking (aOR 2.04, 95% CI 1.59, 2.63), lifetime history of substance use (aOR 3.30 95% CI 2.20, 4.96), and lifetime history of marijuana use (aOR 2.90, 95% CI 2.02, 4.16), among bisexuals only. C-reactive protein did not mediate the sexual orientation/behavior relationship. CONCLUSION: Higher prevalence of current smoking and lifetime history of substance use was observed among sexual minorities compared to heterosexuals. Among bisexuals, depressive symptoms accounted for only 0.9-3% of the reduction in the association between sexual orientation and marijuana use and tobacco use, respectively. More comprehensive assessments of stress are needed to inform explanations of the disparities in behavioral risk observed among sexual minorities

    Support for adoption placements: the first six months

    Get PDF
    Adoption can provide stability and improved outcomes for looked after children, but the support needs of adoptive families range from financial support to managing difficult behaviours and attachment problems. This study looks at the use of services and associated costs over a six-month period through data collected from nineteen adoptive parents six months after a child (average age twenty-three months) had been placed with them for adoption and at the patterns of service needs, usefulness of services and satisfaction with services, supplemented with data from twenty-seven families who were interviewed about their experience of post-adoption support. In line with previous research findings, the core element of support was provided by social workers and over a third of families received financial support from social service departments. Involvement of specialist services such as mental health professionals and educational support was low, probably because of the children’s young age. Satisfaction with the support provided by social workers varied and depended on their relationship with the parents. The mean public sector cost of services was £2,842 (range £980–£6,270) and most costs were borne by children’s social services. These support costs compare favourably with other placement options such as children’s homes or foster-care

    The current state of biomarker research for Friedreich's ataxia: a report from the 2018 FARA biomarker meeting

    Get PDF
    The 2018 FARA Biomarker Meeting highlighted the current state of development of biomarkers for Friedreich's ataxia. A mass spectroscopy assay to sensitively measure mature frataxin (reduction of which is the root cause of disease) is being developed. Biomarkers to monitor neurological disease progression include imaging, electrophysiological measures and measures of nerve function, which may be measured either in serum and/or through imaging-based technologies. Potential pharmacodynamic biomarkers include metabolic and protein biomarkers and markers of nerve damage. Cardiac imaging and serum biomarkers may reflect cardiac disease progression. Considerable progress has been made in the development of biomarkers for various contexts of use, but further work is needed in terms of larger longitudinal multisite studies, and identification of novel biomarkers for additional use cases
    corecore