1,025 research outputs found

    Community Service and Political Identity Development in Adolescence

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    This article addresses the interconnection of political socialization and identity development. We begin with Erikson \u27s work, which identified the development of political commitment in adolescence as a key aspect of identity formation. We then seek to shed light on the social processes through which youth become engaged in political activities and issues. We discuss the influences of family and peers as well as participation in community service and other civic activities. The development of social responsibility and agency, and an understanding of the complexity of social issues are considered as important facets of political commitment. Data from a case study of Black urban adolescents who participated in a year-long service learning program are used to illustrate our perspective. We conclude that social-historical context, instantiated in social relationships and actions, plays a pivotal role in the process and shape of political socialization and identity formation

    What We Know About Engendering Civic Identity

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    Taking the position that there is a developmental process in the formation of citizenship, the authors reviewed studies that reported a link between youth\u27s participation in organized activities and civic behaviors 15 or more years later in adulthood. Data uniformly showed that students who participated in high school government or community service projects, meant in the broad sense, are more likely to vote and to join community organizations than are adults who were nonparticipants during high school. Results support the authors\u27 view that participation during the youth era can be seminal in the construction of civic identity that includes a sense of agency and social responsibility in sustaining the community\u27s well-being

    Religion, community service, and identity in American youth

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    The role of religion in identity development has, for many years, been a relatively neglected topic In psychology. To demonstrate the importance of religion to the formation of identity, this paper presents evidence connecting community service and religiousness in American youth. Data are reviewed that show youth are heavily involved in volunteer service; many youth view religion as important and those who do so are more likely to do service than youth who do not believe that religion Is important in their lives; involvement in church-sponsored service makes it more likely that youth will adopt the religious rationale in which service is couched; and youth who do church-sponsored service are neither service nerds nor single-Issue tunnel-visioned adolescents. These data from nationally representative samples strengthen the case that the many contemporary youth who take religion seriously are vibrantly engaged in their schooling, in the betterment of communities, and the development of identities which presage healthy lives

    Postnatal β2 adrenergic treatment improves insulin sensitivity in lambs with IUGR but not persistent defects in pancreatic islets or skeletal muscle

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    Placental insufficiency causes intrauterine growth restriction (IUGR) and disturbances in glucose homeostasis with associated β adrenergic receptor (ADRβ) desensitization. Our objectives were to measure insulin-sensitive glucose metabolism in neonatal lambs with IUGR and to determine whether daily treatment with ADRβ2 agonist and ADRβ1/β3 antagonists for 1 month normalizes their glucose metabolism. Growth, glucose-stimulated insulin secretion (GSIS) and glucose utilization rates (GURs) were measured in control lambs, IUGR lambs and IUGR lambs treated with adrenergic receptor modifiers: clenbuterol atenolol and SR59230A (IUGR-AR). In IUGR lambs, islet insulin content and GSIS were less than in controls; however, insulin sensitivity and whole-bodyGUR were not different from controls.Of importance, ADRβ2 stimulation with β1/β3 inhibition increases both insulin sensitivity and whole-body glucose utilization in IUGR lambs. In IUGR and IUGR-AR lambs, hindlimb GURs were greater but fractional glucose oxidation rates and ex vivo skeletal muscle glucose oxidation rates were lower than controls. Glucose transporter 4 (GLUT4) was lower in IUGR and IUGR-AR skeletal muscle than in controls but GLUT1 was greater in IUGR-AR. ADRβ2, insulin receptor, glycogen content and citrate synthase activity were similar among groups. In IUGR and IUGR-AR lambs heart rates were greater, which was independent of cardiac ADRβ1 activation. We conclude that targeted ADRβ2 stimulation improved whole-body insulin sensitivity but minimally affected defects in GSIS and skeletal muscle glucose oxidation. We show that risk factors for developing diabetes are independent of postnatal catch-up growth in IUGR lambs as early as 1 month of age and are inherent to the islets and myocytes

    A survey for water maser emission towards planetary nebulae. New detection in IRAS 17347-3139

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    We report on a water maser survey towards a sample of 27 planetary nebulae (PNe) using the Robledo de Chavela and Medicina single-dish antennas, as well as the Very Large Array (VLA). Two detections have been obtained: the already known water maser emission in K 3-35, and a new cluster of masers in IRAS 17347-3139. This low rate of detections is compatible with the short life-time of water molecules in PNe (~100 yr). The water maser cluster at IRAS 17347-3139 are distributed on a ellipse of size ~ 0.2" x 0.1", spatially associated with compact 1.3 cm continuum emission (simultaneously observed with the VLA). From archive VLA continuum data at 4.9, 8.4, and 14.9 GHz, a spectral index alpha = 0.76 +- 0.03 is derived for this radio source, which is consistent with either a partially optically thick ionized region or with an ionized wind. However, the latter scenario can be ruled out on mass-loss considerations, thus indicating that this source is probably a young PN. The spatial distribution and the radial velocities of the water masers are suggestive of a rotating and expanding maser ring, tracing the innermost regions of a torus formed at the end of the AGB phase. Given that the 1.3 cm continuum emission peak is located near one of the tips of the major axis of the ellipse of masers, we speculate on a possible binary nature of IRAS 17347-3139, where the radio continuum emission could belong to one of the components and the water masers would be associated with a companion.Comment: Accepted by The Astrophysical Journal. 25 pages, 6 figure

    Intrauterine growth-restricted sheep fetuses exhibit smaller hindlimb muscle fibers and lower proportions of insulin-sensitive Type I fibers near term

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    Intrauterine growthrestricted sheep fetuses exhibit smaller hindlimb muscle fibers and lower proportions of insulin-sensitive Type I fibers near term. Am J Physiol Regul Integr Comp Physiol 310: R1020–R1029, 2016. First published April 6, 2016; doi:10.1152/ajpregu.00528.2015.—Intrauterine growth restriction (IUGR) reduces muscle mass and insulin sensitivity in offspring. Insulin sensitivity varies among muscle fiber types, with Type I fibers being most sensitive. Differences in fibertype ratios are associated with insulin resistance in adults, and thus we hypothesized that near-term IUGR sheep fetuses exhibit reduced size and proportions of Type I fibers. Placental insufficiency-induced IUGR fetuses were 54% smaller (P \u3c 0.05) than controls and exhibited hypoxemia and hypoglycemia, which contributed to 6.9- fold greater (P \u3c 0.05) plasma norepinephrine and 53% lower (P \u3c 0.05) plasma insulin concentrations. IUGR semitendinosus muscles contained less (P \u3c 0.05) myosin heavy chain-I protein (MyHC-I) and proportionally fewer (P \u3c 0.05) Type I and Type I/IIa fibers than controls, but MyHC-II protein concentrations, Type II fibers, and Type IIx fibers were not different. IUGR biceps femoris muscles exhibited similar albeit less dramatic differences in fiber type proportions. Type I and IIa fibers are more responsive to adrenergic and insulin regulation than Type IIx and may be more profoundly impaired by the high catecholamines and low insulin in our IUGR fetuses, leading to their proportional reduction. In both muscles, fibers of each type were uniformly smaller (P \u3c 0.05) in IUGR fetuses than controls, which indicates that fiber hypertrophy is not dependent on type but rather on other factors such as myoblast differentiation or protein synthesis. Together, our findings show that IUGR fetal muscles develop smaller fibers and have proportionally fewer Type I fibers, which is indicative of developmental adaptations that may help explain the link between IUGR and adulthood insulin resistanc

    Adrenal Demedullation and Oxygen Supplementation Independently Increase Glucose-Stimulated Insulin Concentrations in Fetal Sheep With Intrauterine Growth Restriction

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    In pregnancies complicated by placental insufficiency and intrauterine growth restriction (IUGR), fetal glucose and oxygen concentrations are reduced, whereas plasma norepinephrine and epinephrine concentrations are elevated throughout the final third of gestation. Here we study the effects of chronic hypoxemia and hypercatecholaminemia on β-cell function in fetal sheep with placental insufficiency-induced IUGR that is produced by maternal hyperthermia. IUGR and control fetuses underwent a sham (intact) or bilateral adrenal demedullation (AD) surgical procedure at 0.65 gestation. As expected, AD-IUGR fetuses had lower norepinephrine concentrations than intact-IUGR fetuses despite being hypoxemic and hypoglycemic. Placental insufficiency reduced fetal weights, but the severity of IUGR was less with AD. Although 2 basal plasma insulin concentrations were lower in intact-IUGR and AD-IUGR fetuses compared with intact-controls, glucose-stimulated insulin concentrations were greater in AD-IUGR fetuses compared with intact-IUGR fetuses. Interestingly, AD-controls had lower glucose- and arginine-stimulated insulin concentrations than intact-controls, but AD-IUGR and AD-control insulin responses were not different. To investigate chronic hypoxemia in the IUGR fetus, arterial oxygen tension was increased to normal levels by increasing the maternal inspired oxygen fraction. Oxygenation of IUGR fetuses enhanced glucose-stimulated insulin concentrations 3.3-fold in intact-IUGR and 1.7-fold in AD-IUGR fetuses but did not lower norepinephrine and epinephrine concentrations. Together these findings show that chronic hypoxemia and hypercatecholaminemia have distinct but complementary roles in the suppression of β-cell responsiveness in IUGR fetuses. Placental insufficiency restricts the supply of oxygen and nutrients to the fetus and causes intrauterine growth restriction (IUGR) (1, 2). The resulting fetal hypoxemia and hypoglycemia provoke endocrine responses that lower plasma insulin concentrations (3,–5). High norepinephrine and epinephrine concentrations are a hallmark of both human and animal IUGR fetuses (6,–11). These high concentrations of catecholamines inhibit insulin secretion from pancreatic β-cells and may contribute to very low insulin concentrations in the IUGR fetus (12, 13). In addition, chronic elevation of norepinephrine has been shown to slow fetal growth and induce asymmetric growth of fetal tissues (14, 15)

    Transaccionalismo, Interseccionalidad Feminista y Método Narrativo: aportes para la investigación en Terapia Ocupacional y Ciencia Ocupacional/Transacionalismo, Interseccionalidade Feminista e Método Narrativo: aportes para a pesquisa em Terapia Ocupacional e Ciência Ocupacional

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    Introducción. Las investigaciones en terapia y ciencia ocupacional son cada vez más diversificadas y complejas. Actualmente, se busca superar la perspectiva única e individual, focalizada, principalmente en “la persona”, pasando a considerar el contexto como parte de un complejo entramado social y colectivo. Objetivo. El presente escrito busca presentar dos teorías que son útiles al ámbito investigativo de la terapia ocupacional y la ciencia ocupacional, una más consolidada en la disciplina - el Transaccionalismo y otra que podría generar interesantes discusiones en distintas perspectivas e investigaciones, la Interseccionalidad feminista. Además, junto a lo anterior, presenta las narrativas como una metodología que permita la integración de ambas propuestas. Método. Se realiza una revisión teórica desde un análisis crítico, basado en investigaciones teórico-prácticas. Resultados y discusiones. Buscamos analizar como la integración entre las perspectivas transaccionalistas, interseccionales y metodologías cualitativas, en especial los relatos de vida y narrativas, pueden ofrecer aportes teórico-metodológicos para la investigación en terapia ocupacional y en ciencia ocupacional, de forma de producir saberes y acciones críticas, coherentes y complejas, con foco en el estudio de las ocupaciones, necesarias para nuestra actualidad global. Conclusiones. Se concluye que las investigaciones que busquen caracterizar las ocupaciones de las personas desde perspectivas más complejas, podrían integrar algunos de estos aspectos teóricos, pues facilitan la comprensión y problematización de las diferentes ocupaciones desde perspectivas colectivas, sociales, históricas y contextualizadas.ResumoIntrodução. As investigações em terapia ocupacional e em ciência ocupacional são cada vez mais diversificadas e complexas. Atualmente, se busca superar a perspectiva única e individual focalizada, principalmente ‘na pessoa’, passando a considerar o contexto como parte de uma complexa trama social e coletiva. Objetivo. O presente artigo busca apresentar duas teorias que são uteis no âmbito investigativo da terapia ocupacional e da ciência ocupacional, uma mais consolidada na TO - o Transacionalismo e outra que pode promover interessantes discussões em diferentes perspectivas e pesquisas, a Interseccionalidade Feminista. Além disso, nesta direção, apresenta as narrativas como uma metodologia que permite a integração de ambas perspectivas. Método. Foi realizada uma revisão teórica a partir de análises críticas e baseadas em pesquisas teórico-práticas. Resultados e Discussões. Buscamos analisar como a integração entre as perspectivas transaccionalistas, interseccionais e metodologias qualitativas, em especial os relatos de vida e narrativas, podem oferecer aportes teórico-metodológicos para a investigação em terapia ocupacional e em ciência ocupacional, de forma de produzir saberes e ações críticas, coerentes e complexas, com foco nos estudos das ocupações, necessários para nossa atualidade global. Conclusões. Conclui-se que as investigações que buscam caracterizar as ocupações das pessoas desde perspectivas mais complexas, poderiam integrar as perspectivas teóricas apresentadas, pois facilitam a compreensão e problematização das diferentes ocupações desde perspectivas coletivas, sociais, históricas e contextualizadas.Palavras chaves: Construção de conhecimento; Ciência; Interseccionalidade, Feminismo; Ocupação; Perspectiva crítica; História de vida, Transacionalismo. AbstractIntroduction. Research in occupational therapy and occupational science are increasingly diversified and complex, part of the search to overcome the unique and individual perspective with a central focus only on "the person", and consider the context as part of a complex structure social and collective. Objective. Or present paper seeks to present theories that are useful not research field of occupational therapy and occupational science, one more consolidated, the Transactionalism and another one that can promote interesting discussions in different perspectives and researches, Feminism Intersectionality. In addition, this paper presents the narratives as a methodology that allows the integration of both perspectives. Method. The paper is based on critical analyzes and theoretical studies, based on theoretical-practical research. Results and Discussions. The paper seek to analyse how the integration between the Transactionalism, Intersectionality and qualitative methodologies, especially the life stories and narratives, can offer theoretical-methodological contributions for research in occupational therapy and occupational science, in order to produce knowledge and critical actions, coherent and complex, focusing on the study of the occupations, necessary for our global news. Conclusions. It is concluded that the researches that seek to characterize the occupations of people from more complex perspectives, could integrate some of these theoretical aspects, because they facilitate the understanding and problematization of the different occupations from collective, social, historical and contextualized perspectives.Keywords: Intersectionality; feminism; knowledge construction; science; occupation; critical perspective, life history; Transactionalism

    Postnatal β2 adrenergic treatment improves insulin sensitivity in lambs with IUGR but not persistent defects in pancreatic islets or skeletal muscle

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    Placental insufficiency causes intrauterine growth restriction (IUGR) and disturbances in glucose homeostasis with associated β adrenergic receptor (ADRβ) desensitization. Our objectives were to measure insulin-sensitive glucose metabolism in neonatal lambs with IUGR and to determine whether daily treatment with ADRβ2 agonist and ADRβ1/β3 antagonists for 1 month normalizes their glucose metabolism. Growth, glucose-stimulated insulin secretion (GSIS) and glucose utilization rates (GURs) were measured in control lambs, IUGR lambs and IUGR lambs treated with adrenergic receptor modifiers: clenbuterol atenolol and SR59230A (IUGR-AR). In IUGR lambs, islet insulin content and GSIS were less than in controls; however, insulin sensitivity and whole-bodyGUR were not different from controls.Of importance, ADRβ2 stimulation with β1/β3 inhibition increases both insulin sensitivity and whole-body glucose utilization in IUGR lambs. In IUGR and IUGR-AR lambs, hindlimb GURs were greater but fractional glucose oxidation rates and ex vivo skeletal muscle glucose oxidation rates were lower than controls. Glucose transporter 4 (GLUT4) was lower in IUGR and IUGR-AR skeletal muscle than in controls but GLUT1 was greater in IUGR-AR. ADRβ2, insulin receptor, glycogen content and citrate synthase activity were similar among groups. In IUGR and IUGR-AR lambs heart rates were greater, which was independent of cardiac ADRβ1 activation. We conclude that targeted ADRβ2 stimulation improved whole-body insulin sensitivity but minimally affected defects in GSIS and skeletal muscle glucose oxidation. We show that risk factors for developing diabetes are independent of postnatal catch-up growth in IUGR lambs as early as 1 month of age and are inherent to the islets and myocytes

    Psychological, social and welfare interventions for psychological health and well-being of torture survivors

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    Background: Torture is widespread, with potentially broad and long-lasting impact across physical, psychological, social and other areas of life. Its complex and diverse effects interact with ethnicity, gender, and refugee experience. Health and welfare agencies offer varied rehabilitation services, from conventional mental health treatment to eclectic or needs-based interventions. This review is needed because relatively little outcome research has been done in this field, and no previous systematic review has been conducted. Resources are scarce, and the challenges of providing services can be considerable. Objectives: To assess beneficial and adverse effects of psychological, social and welfare interventions for torture survivors, and to comp are these effects with those reported by active and inactive controls. Search methods: Randomised controlled trials (RCTs) were identified through a search of PsycINFO, MEDLINE, EMBASE, Web of Science, the Cumulative Index to Nursing and Allied Health Literature (CINA HL), the Cochrane Central Register of Controlled Trials (CENTR AL) and the Cochrane Depression, Anxiety and Neurosis Specialise d Register (CCDANCTR), the Latin American and Caribbean Health Science Information Database (LILACS), the Open System for Information on Grey Literature in Europe (OpenSIGLE), the World Health Organization International Clinical Trials Registry Platform (WHO ICTRP) and Published International Literature On Traumatic Stress (PILOTS) all years to 11 April 2013; searches of Cochrane resources, international trial registries and the main biomedical databases were updated on 20 June 2014. We also searched the On line Library of Dignity (Danish Institute against Torture), reference lists of reviews and included studies and the most frequently cited journals, up to April 2013 but not repeated for 2014. Investigators were contacted to provide updates or details as necessary. Selection criteria: Full publications of RCTs or quasi-RCTs of psychological, social or welfare interventions for survivors of torture against any active or inactive comparison condition. Data collection and analysis: We included all major sources of grey literature in our search and used standard methodological procedures as expected by The Cochrane Collaboration for collecting data, evaluating risk of bias and using GRADE (Grades of Recommendation, Assessment, Development and Evaluation) methods to assess the quality of evidence. Main results: Nine RCTs were included in this review. All were of psychological interventions; none provided social or welfare interventions. The nine trials provided data for 507 adults; none involved children or adolescents. Eight of the nine studies described individual treatment, and one discussed group treatment. Six trials were conducted in Europe, and three in different African countries. Most people were refugees in their thirties and forties; most met the criteria for post-traumatic stress disorder (PTSD) at the outset. Four trials used narrative exposure therapy (NET), one cognitive-behavioural therapy (CBT ) and the other four used mixed methods for trauma symptoms, one of which included reconciliation methods. Five interventions were compared with active controls, such as psychoeducation; four used treatment as usual or waiting list/no treatment; we analysed all control conditions together. Duration of therapy varied from one hour to longer than 20 hours with a median of around 12 to 15 hours. All trials reported effects on distress and on PTSD, and two reported on quality of life. Five studies followed up participants for at least six months. No immediate benefits of psychological therapy were noted in comparison with controls in terms of our primary outcome of distress (usually depression), nor for PTSD symptoms, PTSD caseness, or quality of life. At six-month follow-up, three NET and one CBT study (86 participants) showed moderate effect sizes for intervention over control in reduction of distress (standardised me an difference (SMD) -0.63, 95% confidence interval (CI) -1.07 to -0.19) and of PTSD symptoms (SMD -0.52, 95% CI -0.97 to -0.07). However, the quality of evidence was very low, and risk of bias resulted from researcher/therapist allegiance to treatment methods, effects of uncertain asylum status of some people and real-time non-standardised translation of assessment measures. No measures of adverse events were described, nor of participation, social functioning, quantity of social or family relationships, proxy measures by third parties or satisfaction with treatment. Too few studies were identified for review authors to attempt sensitivity analyses. Authors’ conclusions: Very low-quality evidence suggests no differences between psychological therapies and controls in terms of immediate effects on post- traumatic symptoms, distress or quality of life; however, NET and CBT were found to confer moderate benefits in reducing dis tress and PTSD symptoms over the medium term (six months after treatment). Evidence was of very low quality, mainly because non- standardised assessment methods using interpreters were applied, and sample sizes were very small. Most eligible trials also revealed medium to high risk of bias. Further, attention to the cultural appropriateness of interventions or to their psychometric qualities was inadequate, and assessment measures used were unsuitable. As such, these findings should be interpreted with caution. No data were available on whether symptom reduction enabled improvements in quality of life, participation in community life, or in social and family relationships in the medium term. Details of adverse events and treatment satisfaction were not available immediately after treatment nor in the medium term. Future research should aim to address these gaps in the evidence and should include larger sample sizes when possible. Problems of torture survivors need to be defined far more broadly than by PTSD symptoms, and re cognition given to the contextual influences of being a torture survivor, including as an asylum seeker or refugee, on psychological and social health
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