705 research outputs found
Healing from Heterosexism Through Expressive Writing
Simply by existing within our society, LGBTQ people encounter widespread exposure to heterosexist attitudes, behaviors, and policies on a daily basis that ignore, invalidate, or outright discriminate against them. This marginalization contributes to myriad psychological consequences such as depression, suicidality, anxiety, and substance abuse. Despite the fact that LGBTQ people experience mental health issues and some subsequently seek treatment, few interventions exist that specifically address LGBTQ minority stressors; those that do exist tend to treat mental health consequences of societal heterosexism, rather than offering ways to heal from heterosexist experiences directly. In the current study, I explored the ability of three variations of online expressive writing exercises to reduce distress related to experiencing a heterosexist event. In addition to comparing baseline to post-intervention and follow-up scores on measures of psychological distress (including depression, negative affect, trauma-related distress, and internalized homophobia scales) between the three writing conditions and between demographic groups, I conducted a qualitative task analysis on participant responses to study the process by which participants benefitted from the writing exercises. This study contributes to the development of population-specific interventions for LGBTQ people, as well as to the understanding of the processes by which LGBTQ people derive benefit from writing about heterosexist experiences
Two Purified Domains of Telomerase Reverse Transcriptase Reconstitute Sequence-Specific Interactions with RNA
Telomerase reverse transcriptase (TERT) and telomerase RNA (TER) function together to create a uniquely specialized polymerase. Here we have described for the first time domains of bacterially expressed Tetrahymena TERT that interacted directly with TER in the absence of assembly chaperones. We used quantitative binding assays to define TER sequence requirements for recognition by the high affinity RNA binding domain and an independent N-terminal RNA interaction domain. The TERT RNA binding domain and N-terminal RNA interaction domain had distinct, nonoverlapping requirements for TER sequence and structure that together accounted for all of the sites of TER contact inferred for full-length TERT. The TER residues important for TERT binding are only a subset of the residues required for catalytic activity. Our findings demonstrate telomerase functional specialization by an elaborate ribonucleoprotein architecture physically separable from the active site
Qualitative Analysis Techniques for the Review of the Literature
In this article, we provide a framework for analyzing and interpreting sources that inform a literature review or, as it is more aptly called, a research synthesis. Specifically, using Leech and Onwuegbuzie’s (2007, 2008) frameworks, we delineate how the following four major source types inform research syntheses: talk, observations, drawings/photographs/videos, and documents. We identify 17 qualitative data analysis techniques that are optimal for analyzing one or more of these source types. Further, we outline the role that the following five qualitative data analysis techniques can play in the research synthesis: constant comparison analysis, domain analysis, taxonomic analysis, componential analysis, and theme analysis. We contend that our framework represents a first step in an attempt to help literature reviewers analyze and interpret literature in an optimally rigorous way
Thoughts on Commercial Speech: A Roundtable Discussion
Adam Liptak, the legal affairs writer for The New York Times, moderates a lively discussion about commercial speech between three esteemed constitutional scholars: Professor Erwin Chemerinsky of Duke University School of Law; Professor Kathleen Sullivan of Stanford Law School; and Professor Steve Shiffrin of Cornell Law School. These scholars debate the proper definition of defining commercial speech, how the corporate identity of a speaker and the content of the speech determines the level of First Amendment protection, whether it is possible to demarcate commercial speech from political speech, and the problems of paternalism and viewpoint discrimination in this complex and conflicted area
Thoughts on Commercial Speech: A Roundtable Discussion
Adam Liptak, the legal affairs writer for The New York Times, moderates a lively discussion about commercial speech between three esteemed constitutional scholars: Professor Erwin Chemerinsky of Duke University School of Law; Professor Kathleen Sullivan of Stanford Law School; and Professor Steve Shiffrin of Cornell Law School. These scholars debate the proper definition of defining commercial speech, how the corporate identity of a speaker and the content of the speech determines the level of First Amendment protection, whether it is possible to demarcate commercial speech from political speech, and the problems of paternalism and viewpoint discrimination in this complex and conflicted area
An Integrative Approach to Portfolio Evaluation for Teacher Licensure
The purpose of our overall research agenda is to develop and evaluate a methodology for the assessment of teachers in which experienced teachers, serving as judges, engage in dialogue to integrate multiple sources of evidence about a candidate to reach a sound conclusion. The project that provides the venue for this research agenda is the Interstate New Teacher Assessment and Support Consortium (INTASC), which is developing a portfolio assessment system to assist participating states in making a decision about teacher licensure. To develop the theoretical foundation necessary to support and evaluate such dialogic and integrative assessment practices, we turn, in part, to the tradition of philosophical hermeneutics, as a complement to psychometrics. In this article, we characterize and assess the processes in which judges, trying out an integrative approach to portfolio evaluation for the first time, engage as they collaboratively construct and document their conclusions, and we locate this work in the larger research agenda. The premise of this project, which is being carefully evaluated in the course of inquiry, is that these integrative practices cannot only lead to an epistemologically sound evaluation of teaching but also promote an ongoing professional dialogue of critical reflection on teaching practice.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/43358/1/11092_2004_Article_162852.pd
HIV-1 Nef disrupts MHC-I trafficking by recruiting AP-1 to the MHC-I cytoplasmic tail
To avoid immune recognition by cytotoxic T lymphocytes (CTLs), human immunodeficiency virus (HIV)-1 Nef disrupts the transport of major histocompatibility complex class I molecules (MHC-I) to the cell surface in HIV-infected T cells. However, the mechanism by which Nef does this is unknown. We report that Nef disrupts MHC-I trafficking by rerouting newly synthesized MHC-I from the trans-Golgi network (TGN) to lysosomal compartments for degradation. The ability of Nef to target MHC-I from the TGN to lysosomes is dependent on expression of the μ1 subunit of adaptor protein (AP) AP-1A, a cellular protein complex implicated in TGN to endolysosomal pathways. We demonstrate that in HIV-infected primary T cells, Nef promotes a physical interaction between endogenous AP-1 and MHC-I. Moreover, we present data that this interaction uses a novel AP-1 binding site that requires amino acids in the MHC-I cytoplasmic tail. In sum, our evidence suggests that binding of AP-1 to the Nef–MHC-I complex is an important step required for inhibition of antigen presentation by HIV
Biosignatures in Mars Analog Acid Salt Lakes
Paleolake sites on Mars, particularly buried deposits that have been shielded from surface radiation, serve as intriguing targets for the search for life. Mars-like ephemeral playa lakes here on Earth can offer insights and perspectives on the possibilities for physical, metabolic, and biomolecular biosignature recovery from similar environments on Mars
Genetic and molecular identification of three human TPP1 functions in telomerase action: recruitment, activation, and homeostasis set point regulation
Telomere length homeostasis is essential for the long-term survival of stem cells, and its set point determines the proliferative capacity of differentiated cell lineages by restricting the reservoir of telomeric repeats. Knockdown and overexpression studies in human tumor cells showed that the shelterin subunit TPP1 recruits telomerase to telomeres through a region termed the TEL patch. However, these studies do not resolve whether the TPP1 TEL patch is the only mechanism for telomerase recruitment and whether telomerase regulation studied in tumor cells is representative of nontransformed cells such as stem cells. Using genome engineering of human embryonic stem cells, which have physiological telomere length homeostasis, we establish that the TPP1 TEL patch is genetically essential for telomere elongation and thus long-term cell viability. Furthermore, genetic bypass, protein fusion, and intragenic complementation assays define two distinct additional mechanisms of TPP1 involvement in telomerase action at telomeres. We demonstrate that TPP1 provides an essential step of telomerase activation as well as feedback regulation of telomerase by telomere length, which is necessary to determine the appropriate telomere length set point in human embryonic stem cells. These studies reveal and resolve multiple TPP1 roles in telomere elongation and stem cell telomere length homeostasis. Keywords: embryonic stem cells; human genome engineering; shelterin; telomerase telomere maintenanceNational Institutes of Health (U.S.) (Grant R37-CA084198)National Institutes of Health (U.S.) (Grant RO1-CA087869)National Institutes of Health (U.S.) (Grant RO1-HD045022
How do we integrate skills and content in classics? An inquiry into students’ use of sources
Engagement with primary sources is a key feature of arts and humanities subjects, particularly classics and ancient history. Recent instructional trends emphasise integrating skills with content, particularly in the first year of higher education. We investigate how successfully first-year university students used a variety of sources in an integrated skills and content course, through analysis of 84 final essays. Most students used four to nine sources in a 1500 word essay, but only one type of ancient source. The findings express the need to move from debates about whether to integrate skills or not, to greater discuss how key discipline-specific skills are integrated into content-based courses. Cognitive apprenticeship theory, and a thematic approach used in museum education, are used to reflect on the findings and discuss how teachers might better support students in this key aspect of the discipline
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