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- Hemeren, Paul, et al.
(författare)
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URBANIST : Signaler som används för att avläsa cyklisters intentioner i trafiken
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Genom att titta på ett fåtal bestämda signaler kan man med god träffsäkerhet förutsäga cyklisters beteende, vilket tyder på att de identifierade signalerna är betydelsefulla. Vetskapen om dessa kan, bland annat, praktiskt användas för att utveckla enkla hjälpmedel – såsom medveten placering av fluorescerande eller reflekterande material på leder och/eller införande av olikfärgade hjälmsidor. Dylika kan förväntas förstärka kommunikationen av viktiga signaler. Vetskapen kan även användas för att utbilda oerfarna bilförare. Båda fallen kan i förlängningen ge en säkrare trafikmiljö för oskyddade trafikanter.
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- Klaric, Lucija, et al.
(författare)
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Mendelian randomisation identifies alternative splicing of the FAS death receptor as a mediator of severe COVID-19.
- 2021
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Ingår i: medRxiv : the preprint server for health sciences. - : Cold Spring Harbor Laboratory. ; , s. 1-28
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Severe COVID-19 is characterised by immunopathology and epithelial injury. Proteomic studies have identified circulating proteins that are biomarkers of severe COVID-19, but cannot distinguish correlation from causation. To address this, we performed Mendelian randomisation (MR) to identify proteins that mediate severe COVID-19. Using protein quantitative trait loci (pQTL) data from the SCALLOP consortium, involving meta-analysis of up to 26,494 individuals, and COVID-19 genome-wide association data from the Host Genetics Initiative, we performed MR for 157 COVID-19 severity protein biomarkers. We identified significant MR results for five proteins: FAS, TNFRSF10A, CCL2, EPHB4 and LGALS9. Further evaluation of these candidates using sensitivity analyses and colocalization testing provided strong evidence to implicate the apoptosis-associated cytokine receptor FAS as a causal mediator of severe COVID-19. This effect was specific to severe disease. Using RNA-seq data from 4,778 individuals, we demonstrate that the pQTL at the FAS locus results from genetically influenced alternate splicing causing skipping of exon 6. We show that the risk allele for very severe COVID-19 increases the proportion of transcripts lacking exon 6, and thereby increases soluble FAS. Soluble FAS acts as a decoy receptor for FAS-ligand, inhibiting apoptosis induced through membrane-bound FAS. In summary, we demonstrate a novel genetic mechanism that contributes to risk of severe of COVID-19, highlighting a pathway that may be a promising therapeutic target.
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- Adde, Magdalena, et al.
(författare)
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Superior outcome in transformed follicular lymphoma compared to de novo aggressive B-cell lymphoma treated with high-dose therapy and autologous stem-cell support
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Purpose: To assess the outcome of high–dose therapy with autologous stem cell support (HDT) in patients with transformed follicular lymphoma compared to patients with de novo aggressive B-cell lymphoma, in a retrospective analysis of patients treated at two Swedish university hospitals. Patients and Methods: 117 patients, mean age 48 years (21-65), 79 with de novo aggressive B-cell lymphoma and 38 with transformed follicular lymphoma, were treated with high-dose-therapy (HDT) as consolidation. Thirteen patients with transformed follicular lymphoma had been treated with a single alkylating agent and 25 were chemonaive at transformation. After transformation, nine patients had HDT as part of first line aggressive therapy, and a further eight failed to obtain CR and had HDT upfront. Twenty-one patients received more than one treatment regimen before HDT. In the de novo aggressive lymphoma group five patients with high risk criteria, and 16 patients who failed to obtain CR, received HDT upfront (CR1), Fifty-eight patients received more than one regimen before HDT because of relapse. Rituximab was given as a single dose to five patients for in vivo purging of the stem cell graft. Results: With a median follow up of 11.5 years (8-20), event free survival (EFS) and overall survival (OS) were 35% and 44% respectively. When comparing the two groups, the ten- year EFS rates were 27% in the de novo group and 55% in the transformed group and the ten-year OS was 33 % and 67% respectively. Treatment related mortality was acceptable with 4% early and 3.5% late mortality. In a multivariate analysis, “transformed vs de novo aggressive” histopathology was the only factor significantly related to outcome. Conclusion: Both EFS and OS were much better in patients with transformed follicular lymphoma compared to patients with de novo aggressive B-cell lymphoma Although the introduction of rituximab certainly has improved the outcome in both groups, HDT should still be considered as a salvage strategy not only in cases of de novo aggressive B-cell lymphoma and especially in transformed follicular lymphoma relapsing after first line treatment..
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- Ahlborg, Mikael, 1985-
(författare)
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Social capital and inequalities in mental health among young adolescents in Sweden
- 2022
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this thesis was to explore social capital and inequalities in mental health among young adolescents in Sweden. This is a compilation thesis comprising four studies. Studies I and II are quantitative studies of crosssectional data from the Swedish Health Behaviour in School-aged Children survey. The aim of Study I was to investigate socioeconomic inequalities in health using both a subjective and an objective measure of socioeconomic status among Swedish adolescents. The findings showed that subjective socioeconomic status robustly and independently predicted mental health problems, poor life satisfaction and poor general health perception. The association between objective socioeconomic status and mental health was weakened, and even reversed, when subjective socioeconomic status was accounted for in regression models. A Latent Profile Analysis was applied in Study II with the aim of identifying distinct profiles of family, school and peer social capital in a nationally representative sample of adolescents and to explore health outcomes in those profiles. The findings showed that five distinct profiles best represented the data for 11 and 15-year olds, while a four-profile model was optimal for 13-year olds. Significant inequalities were identified between profiles when these were examined in terms of mental health problems and life satisfaction. The design of Study III was a qualitative semi-structured interview study. The aim was to explore social capital from the perspective of adolescents in relation to mental health. Adolescents spoke of having access to a safe space, feeling connected to others and predictability as important aspects of social relationships and networks in relation to mental health. The aim of Study IV was to identify and evaluate the design and psychometric properties of instruments for assessing social capital specifically developed and validated for self-reporting among adolescents (10-19 years). The design was a systematic review, in which 20 instruments were identified. The results revealed a lack of instruments that covered both the multidimensionality of social capital and contextual relevance in relation to adolescents. The conclusion from this thesis is that social capital may be useful for identifying vulnerable individuals and for differentiating between the natural imbalance of adolescence and what may lead to serious illness. Longitudinal research and refinement of the operationalization of the concept are, however, needed to enhance the understanding of these findings.
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