1,220 research outputs found

    Changes in glass consumption in Pergamon (Turkey) from Hellenistic to late Byzantine and Islamic times

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    We present compositional data for nearly 100 glass samples from Pergamon, western Turkey, spanning 1500 years from the Hellenistic to Late Byzantine and Islamic periods. The data shows the use of already-known Roman glass groups during the first half of the time frame, for imported vessels as well as locally worked glass. No compositional change is seen related to the introduction of glass blowing for either of the glass groups in use during this time. During the first half of the 1st millennium AD, two previously little-known boron- and alumina-rich compositional groups emerge. These glass groups, thought to be regionally produced, dominate glass compositions in Pergamon during the mid-to late Byzantine and Islamic periods, indicating a major shift in glass supply and a fragmentation of the economy into more regional units. Plant-ash glass, from the 9th century AD replacing mineral natron glass in the Levant, plays only a minor role in Byzantine and Islamic Pergamon

    Self-rated mentalizing mediates the relationship between stress and coping in a non-clinical sample

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    Background: The clinical concept of mentalizing has recently been extended into non-clinical contexts. In particular, the protective function of robust mentalizing as a processing capacity of interpersonal and intrapsychic events has become a focus of consideration. Theoretical approaches hypothesize that mentalizing may allow for an adequate self-awareness in the face of aversive experiences such as stress, leading to a reappraisal of these experiences and therefore enables the use of adaptive coping behaviors. Objective: The study aimed to investigate the association between coping behavior, mentalizing and experiences of stress. Method: 534 healthy adults completed the German-language Stress Processing Questionnaire (SVF), the Mentalization Questionnaire (MZQ), and a short scale of the Trierer Inventory of Chronic Stress (TICS) in a cross-sectional research design. Results: Correlational analyses suggested associations between coping and mentalizing. Furthermore, MZQ scores predicted both positive and negative coping behavior. The relationship between stress and both negative and positive coping was mediated by mentalizing capacity. Conclusion: Findings confirm the hypothesis that mentalizing may represent a coping resource within a resilience framework. An implementation of the concept in preventive mental health interventions is discussed

    The relationship between global distress, mentalizing and well-being in a German teacher sample

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    Many studies have linked global distress including higher psychological symptom severity and high levels of stress with low levels of well-being among teachers, indicating a need to identify and empirically evaluate protective factors. Mentalizing—the capacity to understand behavior in terms of intentional mental states—may be a candidate protective factor to mediate this association, enhancing well-being in the face of high levels of global distress. The present study examines whether the capacity to mentalize can buffer subjectively experienced stress and psychological symptom severity in a sample of teachers. 215 teachers completed questionnaires measuring self-rated experiences of stress, psychological symptoms, mentalizing capacities and well-being in a cross-sectional design. Structural equation modeling was used to test mediation effects. Our findings show that mentalizing was positively associated with well-being. In addition, mentalizing counteracted the negative influence of stress and psychological symptom severity. However, a structural equation model assessing the mediating effect of global distress on well-being via mentalizing was not significant. Therefore, the data indicate that teachers’ capacity to mentalize, regardless of psychological symptom load and subjective experience of stress, has a positive impact on their well-being. The study highlights the protective function of mentalizing and forms a framework for psychological interventions to increase teachers’ well-being

    Prevalence of facet joint pain in chronic spinal pain of cervical, thoracic, and lumbar regions

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    BACKGROUND: Facet joints are a clinically important source of chronic cervical, thoracic, and lumbar spine pain. The purpose of this study was to systematically evaluate the prevalence of facet joint pain by spinal region in patients with chronic spine pain referred to an interventional pain management practice. METHODS: Five hundred consecutive patients with chronic, non-specific spine pain were evaluated. The prevalence of facet joint pain was determined using controlled comparative local anesthetic blocks (1% lidocaine or 1% lidocaine followed by 0.25% bupivacaine), in accordance with the criteria established by the International Association for the Study of Pain (IASP). The study was performed in the United States in a non-university based ambulatory interventional pain management setting. RESULTS: The prevalence of facet joint pain in patients with chronic cervical spine pain was 55% 5(95% CI, 49% – 61%), with thoracic spine pain was 42% (95% CI, 30% – 53%), and in with lumbar spine pain was 31% (95% CI, 27% – 36%). The false-positive rate with single blocks with lidocaine was 63% (95% CI, 54% – 72%) in the cervical spine, 55% (95% CI, 39% – 78%) in the thoracic spine, and 27% (95% CI, 22% – 32%) in the lumbar spine. CONCLUSION: This study demonstrated that in an interventional pain management setting, facet joints are clinically important spinal pain generators in a significant proportion of patients with chronic spinal pain. Because these patients typically have failed conservative management, including physical therapy, chiropractic treatment and analgesics, they may benefit from specific interventions designed to manage facet joint pain

    Epistemisches Vertrauen - Eine wichtige Ergänzung für die mentalisierungsbasierte (Sonder)Pädagogik

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    Zunächst wird Mentalisieren als wichtiges Merkmal der menschlichen emotionalen und sozialen Entwicklung kurz umrissen. Es wird darauf aufbauend versucht, das Entwicklungsmodell des Mentalisierens in seiner Bedeutung für die (Sonder)Pädagogik herauszuarbeiten. Darin wird Epistemisches Vertrauen als konzeptionelle Erweiterung des Mentalisierungskonzeptes auch für die (Sonder)Pädagogik emotionaler und sozialer Entwicklung dargestellt. Zuletzt werden in einem Fazit Implikationen für die Arbeit in (sonder)pädagogischen Feldern diskutiert

    Chemically monoubiquitinated PEX5 binds to the components of the peroxisomal docking and export machinery

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    Peroxisomal matrix proteins contain either a peroxisomal targeting sequence 1 (PTS1) or a PTS2 that are recognized by the import receptors PEX5 and PEX7, respectively. PEX5 transports the PTS1 proteins and the PEX7/PTS2 complex to the docking translocation module (DTM) at the peroxisomal membrane. After cargo release PEX5 is monoubiquitinated and extracted from the peroxisomal membrane by the receptor export machinery (REM) comprising PEX26 and the AAA ATPases PEX1 and PEX6. Here, we investigated the protein interactions of monoubiquitinated PEX5 with the docking proteins PEX13, PEX14 and the REM. “Click” chemistry was used to synthesise monoubiquitinated recombinant PEX5. We found that monoubiquitinated PEX5 binds the PEX7/PTS2 complex and restores PTS2 protein import in vivo in ¿PEX5 fibroblasts. In vitro pull-down assays revealed an interaction of recombinant PEX5 and monoubiquitinated PEX5 with PEX13, PEX14 and with the REM components PEX1, PEX6 and PEX26. The interactions with the docking proteins were independent of the PEX5 ubiquitination status whereas the interactions with the REM components were increased when PEX5 is ubiquitinated.We are grateful to Stephen J. Gould (Johns Hopkins University, Baltimore), Nancy E. Braverman (McGill University, Montreal), Wolfgang Schliebs (Ruhr University, Bochum) and Daniel Passon (EMBL, Hamburg) for providing plasmids and antibodies. Work in J.E.A. lab is funded by FEDER (Fundo Europeu de Desenvolvimento Regional), through COMPETE 2020 – Operacional Programme for Competitiveness and Internationalization (POCI), Portugal 2020, and by Portuguese funds through Fundação para a Ciência e Tecnologia (FCT)/Ministério da Ciência, Tecnologia e Inovação in the framework of the projects “Institute for Research and Innovation in Health Sciences” (POCI-01-0145-FEDER-007274) and “The molecular mechanisms of peroxisome biogenesis” (PTDC/BEXBCM/2311/2014), and through Norte 2020 – Programa Operacional Regional do Norte, under the application of the “Porto Neurosciences and Neurologic Disease Research Initiative at i3S” (NORTE-01-0145-FEDER-000008). We acknowledge support by the Open Access Publishing Fund of the University of Tübingen and the Deutsche Forschungsgemeinschaft for publishing costs

    Zygapophysial joint blocks in chronic low back pain: a test of Revel's model as a screening test

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    BACKGROUND: Only controlled blocks are capable of confirming the zygapophysial joints (ZJ) as the pain generator in LBP patients. However, previous workers have found that a cluster of clinical signs ("Revel's criteria"), may be valuable in predicting the results of an initial screening ZJ block. It was suggested that these clinical findings are unsuitable for diagnosis, but may be of value in selecting patients for diagnostic blocks of the lumbar ZJ's. To constitute evidence in favour of a clinical management strategy, these results need confirmation. This study evaluates the utility of 'Revel's criteria' as a screening tool for selection of chronic low back pain patients for controlled ZJ diagnostic blocks. METHODS: This study utilized a prospective blinded concurrent reference standard related validity design. Consecutive chronic LBP patients completed pain drawings, psychosocial distress and disability questionnaires, received a clinical examination and lumbar zygapophysial blocks. Two reference standards were evaluated simultaneously: 1. 75% reduction of pain on a visual analogue scale (replication of previous work), and 2. abolition of the dominant or primary pain. Using "Revel's criteria" as predictors, logistic regression analyses were used to test the model. Estimates of sensitivity, specificity, predictive values and likelihood ratios for selected variables were calculated for the two proposed clinical strategies. RESULTS: Earlier results were not replicated. Sensitivity of "Revel's criteria" was low sensitivity (<17%), and specificity high (approximately 90%). Absence of pain with cough or sneeze just reached significance (p = 0.05) within one model. CONCLUSIONS: "Revel's criteria" are unsuitable as a clinical screening test to select chronic LBP patients for initial ZJ blocks. However, the criteria may have use in identifying a small subset (11%) of patients likely to respond to the initial block (specificity 93%)

    A review of methods for addressing components of interventions in meta-analysis

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    Many healthcare interventions are complex, consisting of multiple, possibly interacting, components. Several methodological articles addressing complex interventions in the metaanalytical context have been published. We hereby provide an overview of methods used to evaluate the effects of complex interventions with meta-analytical models. We summarized the methodology, highlighted new developments, and described the benefits, drawbacks, and potential challenges of each identified method. We expect meta-analytical methods focusing on components of several multicomponent interventions to become increasingly popular due to recently developed, easy-to-use, software tools that can be used to conduct the relevant analyses. The different meta-analytical methods are illustrated through two examples comparing psychotherapies for panic disorder. Copyright

    Differential gene expression mediated by 15-hydroxyeicosatetraenoic acid in LPS-stimulated RAW 264.7 cells

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    <p>Abstract</p> <p>Background</p> <p>Given the immuno-modulatory activity of native haemozoin (Hz), the effects of constitutive Hz components on immune response are of interest. Recently, gene expression changes mediated by HNE and the synthetic analogue of Hz, beta-haematin (BH), were identified and implicated a significant role for lipid peroxidation products in Hz's activity. The study presented herein examines gene expression changes in response to 15(S)-hydroxyeicosatetraenoic acid (HETE) in a model macrophage cell line.</p> <p>Methods</p> <p>LPS-stimulated RAW 264.7 macrophage-like cells were treated with 40 μM 15(S)-HETE for 24 h, and microarray analysis was used to identify global gene expression alterations. Fold changes were calculated relative to LPS-stimulated cells and those genes altered at least 1.8-fold (<it>p </it>value ≤ 0.025) were considered to be differentially expressed. Expression levels of a subset of genes were assessed by qRT-PCR and used to confirm the microarray results.</p> <p>Results</p> <p>Network analysis revealed that altered genes were primarily associated with "lipid metabolism" and "small molecule biochemistry". While several genes associated with PPAR-gamma receptor-mediated signaling were differentially expressed, a number of genes indicated the activation of secondary signaling cascades. Genes related to cytoadherence (cell-cell and cell-matrix), leukocyte extravasation, and inflammatory response were also differentially regulated by treatment, supporting a potential role for 15(S)-HETE in malaria pathogenesis.</p> <p>Conclusion</p> <p>These results add insight and detail to 15-HETE's effects on gene expression in macrophage-like cells. Data indicate that while 15-HETE exerts biological activity and may participate in Hz-mediated immuno-modulation, the gene expression changes are modest relative to those altered by the lipid peroxidation product HNE.</p
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