| 1. |
- Arking, D. E., et al.
(författare)
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Genetic association study of QT interval highlights role for calcium signaling pathways in myocardial repolarization
- 2014
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Ingår i: Nature Genetics. - : Nature Publishing Group. - 1061-4036 .- 1546-1718. ; 46:8, s. 826-836
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Tidskriftsartikel (refereegranskat)abstract
- The QT interval, an electrocardiographic measure reflecting myocardial repolarization, is a heritable trait. QT prolongation is a risk factor for ventricular arrhythmias and sudden cardiac death (SCD) and could indicate the presence of the potentially lethal mendelian long-QT syndrome (LQTS). Using a genome-wide association and replication study in up to 100,000 individuals, we identified 35 common variant loci associated with QT interval that collectively explain ∼ 8-10% of QT-interval variation and highlight the importance of calcium regulation in myocardial repolarization. Rare variant analysis of 6 new QT interval-associated loci in 298 unrelated probands with LQTS identified coding variants not found in controls but of uncertain causality and therefore requiring validation. Several newly identified loci encode proteins that physically interact with other recognized repolarization proteins. Our integration of common variant association, expression and orthogonal protein-protein interaction screens provides new insights into cardiac electrophysiology and identifies new candidate genes for ventricular arrhythmias, LQTS and SCD. © 2014 Nature America, Inc.
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| 2. |
- Baldanzi, Gabriel, et al.
(författare)
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Accelerometer-based physical activity is associated with the gut microbiota in 8416 individuals in SCAPIS.
- 2024
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Ingår i: EBioMedicine. - : Elsevier. - 2352-3964. ; 100
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Previous population-based studies investigating the relationship between physical activity and the gut microbiota have relied on self-reported activity, prone to reporting bias. Here, we investigated the associations of accelerometer-based sedentary (SED), moderate-intensity (MPA), and vigorous-intensity (VPA) physical activity with the gut microbiota using cross-sectional data from the Swedish CArdioPulmonary bioImage Study.METHODS: In 8416 participants aged 50-65, time in SED, MPA, and VPA were estimated with hip-worn accelerometer. Gut microbiota was profiled using shotgun metagenomics of faecal samples. We applied multivariable regression models, adjusting for sociodemographic, lifestyle, and technical covariates, and accounted for multiple testing.FINDINGS: Overall, associations between time in SED and microbiota species abundance were in opposite direction to those for MPA or VPA. For example, MPA was associated with lower, while SED with higher abundance of Escherichia coli. MPA and VPA were associated with higher abundance of the butyrate-producers Faecalibacterium prausnitzii and Roseburia spp. We observed discrepancies between specific VPA and MPA associations, such as a positive association between MPA and Prevotella copri, while no association was detected for VPA. Additionally, SED, MPA and VPA were associated with the functional potential of the microbiome. For instance, MPA was associated with higher capacity for acetate synthesis and SED with lower carbohydrate degradation capacity.INTERPRETATION: Our findings suggest that sedentary and physical activity are associated with a similar set of gut microbiota species but in opposite directions. Furthermore, the intensity of physical activity may have specific effects on certain gut microbiota species.FUNDING: European Research Council, Swedish Heart-Lung Foundation, Swedish Research Council, Knut and Alice Wallenberg Foundation.
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| 3. |
- Baldanzi, Gabriel, et al.
(författare)
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OSA Is Associated With the Human Gut Microbiota Composition and Functional Potential in the Population-Based Swedish CardioPulmonary bioImage Study
- 2023
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Ingår i: Chest. - : Elsevier. - 0012-3692 .- 1931-3543. ; 164:2, s. 503-516
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Obstructive sleep apnea (OSA) is a common sleep-breathing disorder linked to increased risk of cardiovascular disease. Intermittent hypoxia and intermittent airway obstruction, hallmarks of OSA, have been shown in animal models to induce substantial changes to the gut microbiota composition and subsequent transplantation of fecal matter to other animals induced changes in blood pressure and glucose metabolism.RESEARCH QUESTION: Does obstructive sleep apnea in adults associate with the composition and metabolic potential of the human gut microbiota?STUDY DESIGN AND METHODS: We used respiratory polygraphy data from up to 3,570 individuals aged 50-64 from the population-based Swedish CardioPulmonary bioImage Study combined with deep shotgun metagenomics of fecal samples to identify cross-sectional associations between three OSA parameters covering apneas and hypopneas, cumulative sleep time in hypoxia and number of oxygen desaturation events with gut microbiota composition. Data collection about potential confounders was based on questionnaires, on-site anthropometric measurements, plasma metabolomics, and linkage with the Swedish Prescribed Drug Register.RESULTS: We found that all three OSA parameters were associated with lower diversity of species in the gut. Further, the OSA-related hypoxia parameters were in multivariable-adjusted analysis associated with the relative abundance of 128 gut bacterial species, including higher abundance of Blautia obeum and Collinsela aerofaciens. The latter species was also independently associated with increased systolic blood pressure. Further, the cumulative time in hypoxia during sleep was associated with the abundance of genes involved in nine gut microbiota metabolic pathways, including propionate production from lactate. Lastly, we observed two heterogeneous sets of plasma metabolites with opposite association with species positively and negatively associated with hypoxia parameters, respectively.INTERPRETATION: OSA-related hypoxia, but not the number of apneas/hypopneas, is associated with specific gut microbiota species and functions. Our findings lay the foundation for future research on the gut microbiota-mediated health effects of OSA.
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| 4. |
- Borg, Sixten, et al.
(författare)
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Patient-reported outcome and experience measures for diabetes: development of scale models, differences between patient groups and relationships with cardiovascular and diabetes complication risk factors, in a combined registry and survey study in Sweden
- 2018
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Ingår i: BMJ Open. - : BMJ. - 2044-6055. ; 9:1
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Tidskriftsartikel (refereegranskat)abstract
- Purpose The Swedish National Diabetes Register (NDR) has developed a diabetes-specific questionnaire to collect information on individuals' management of their diabetes, collaboration with healthcare providers and the disease’s impact on daily life. Our main objective was to develop measures of well-being, abilities to manage diabetes and judgements of diabetes care, and to detect and quantify differences using the NDR questionnaire.Design, setting and participants The questionnaire was analysed with using responses from 3689 participants with type 1 and 2 diabetes, randomly sampled from the NDR population, combined with register data on patient characteristics and cardiovascular and diabetes complication risk factors.Methods We used item response theory to develop scales for measuring well-being, abilities to manage diabetes and judgements of diabetes care (scores). Test–retest reliability on the scale level was analysed with intraclass correlation. Associations between scores and risk factor levels were investigated with subgroup analyses and correlations.Results We obtained scales with satisfactory measurement properties, covering patient reported outcome measures such as general well-being and being free of worries, and patient reported experience measure, for example, access and continuity in diabetes care. All scales had acceptable test–retest reliability and could detect differences between diabetes types, age, gender and treatment subgroups. In several aspects, for example, freedom of worries, type 1 patients report lower than type 2, and younger patients lower than older. Associations were found between some scores and glycated haemoglobin, but none with systolic blood pressure or low-density lipoprotein cholesterol. Clinicians report positive experience of using scores, visually presented, in the patient dialogue.Conclusions The questionnaire measures and detects differences in patient well-being, abilities and judgements of diabetes care, and identifies areas for improvement. To further improve diabetes care, we conclude that patient-reported measures are important supplements to cardiovascular and diabetes complication risk factors, reflecting patient experiences of living with diabetes and diabetes care.
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| 5. |
- Brorsson, Sofia, 1973-, et al.
(författare)
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Differences in muscle activity during hand-dexterity tasks between women with arthritis and a healthy reference group
- 2014
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Ingår i: BMC Musculoskeletal Disorders. - London, England : Springer Science and Business Media LLC. - 1471-2474. ; 15
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Tidskriftsartikel (refereegranskat)abstract
- Background: Impaired hand function is common in patients with arthritis and it affects performance of daily activities; thus, hand exercises are recommended. There is little information on the extent to which the disease affects activation of the flexor and extensor muscles during these hand-dexterity tasks. The purpose of this study was to compare muscle activation during such tasks in subjects with arthritis and in a healthy reference group. Methods: Muscle activation was measured in m. extensor digitorium communis (EDC) and in m. flexor carpi radialis (FCR) with surface electromyography (EMG) in women with rheumatoid arthritis (RA, n = 20), hand osteoarthritis (HOA, n = 16) and in a healthy reference group (n = 20) during the performance of four daily activity tasks and four hand exercises. Maximal voluntary isometric contraction (MVIC) was measured to enable intermuscular comparisons, and muscle activation is presented as %MVIC. Results: The arthritis group used a higher %MVIC than the reference group in both FCR and EDC when cutting with a pair of scissors, pulling up a zipper and-for the EDC-also when writing with a pen and using a key (p < 0.02). The exercise "rolling dough with flat hands" required the lowest %MVIC and may be less effective in improving muscle strength. Conclusions: Women with arthritis tend to use higher levels of muscle activation in daily tasks than healthy women, and wrist extensors and flexors appear to be equally affected. It is important that hand training programs reflect real-life situations and focus also on extensor strength.
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| 6. |
- Danielsson, Erna, 1954-, et al.
(författare)
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Sociologiska perspektiv på coronakrisen : Fyra sociologer om samhällets reaktion på covid-19
- 2020
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Ingår i: Sociologisk forskning. - Annelöv : Sveriges sociologförbund. - 0038-0342 .- 2002-066X. ; 57:1, s. 67-76
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Sociologisk Forskning bad fyra sociologer i Sverige att svara på några korta frågor om coronapandemin och vårt samhälles hantering av den.Deras tidigare forskning har på olika sätt berört olika frågor såsom socialmedicin och medicinsk kunskapsproduktion, sociala nätverks betydelse för smittspridning, samhällets hantering av kriser och risker, genusaspekter av samhällskriser samt dynamiken mellan expertis, politiker och medborgare i beslutsfattande och debatter kring frågor där expertkunskap är centralt. Utifrån svaren på frågorna redigerade tidskriftens redaktörer en sammanhängande text, som de fyra forskarna sedan kunde ändra och göra tillägg i. Resultatet är en gemensam text som påminner om ett samtal. Den slutliga texten färdigställdes den 8 april 2020 .De fyra medverkande forskarna är Erna Danielsson, docent i sociologi vid Mittuni-versitetet och föreståndare för Risk and Crisis Research Centre (RCR), som forskar om samhällets krishantering vid såväl vardagskriser som större händelser och specifikt genus och krishantering; Fredrik Liljeros, professor i sociologi vid Stockholms universitet, som genomförde sitt postdoktorprojekt på dåvarande Smittskyddsinstitutet tillsammans med nuvarande statsepidemiologen Anders Tegnell och i dag bedriver forskning om hur människors kontaktnätverk påverkar spridningsdynamik; Shai Mulinari, docent i sociologi vid Lunds universitet, som bedriver forskning om medicinsk kunskapsproduktion, läkemedelsindustrin, epidemiologi och folkhälsa; samt Linda Soneryd, professor i sociologi vid Göteborgs universitet, som forskat om miljörelaterade risker och kriser samt om hur demokrati och deltagande förstås i anslutning till expertfrågor.
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| 7. |
- Dekkers, Koen, et al.
(författare)
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An online atlas of human plasma metabolite signatures of gut microbiome composition.
- 2022
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Ingår i: Nature communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 13:1
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Tidskriftsartikel (refereegranskat)abstract
- Human gut microbiota produce a variety of molecules, some of which enter the bloodstream and impact health. Conversely, dietary or pharmacological compounds may affect the microbiota before entering the circulation. Characterization of these interactions is an important step towards understanding the effects of the gut microbiota on health. In this cross-sectional study, we used deep metagenomic sequencing and ultra-high-performance liquid chromatography linked to mass spectrometry for a detailed characterization of the gut microbiota and plasma metabolome, respectively, of 8583 participants invited at age 50 to 64 from the population-based Swedish CArdioPulmonary bioImage Study. Here, we find that the gut microbiota explain up to 58% of the variance of individual plasma metabolites and we present 997 associations between alpha diversity and plasma metabolites and 546,819 associations between specific gut metagenomic species and plasma metabolites in an online atlas ( https://gutsyatlas.serve.scilifelab.se/ ). We exemplify the potential of this resource by presenting novel associations between dietary factors and oral medication with the gut microbiome, and microbial species strongly associated with the uremic toxin p-cresol sulfate. This resource can be used as the basis for targeted studies of perturbation of specific metabolites and for identification of candidate plasma biomarkers of gut microbiota composition.
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| 8. |
- Erlandsson, Kerstin, et al.
(författare)
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Mothers' experiences of the time after the diagnosis of an intrauterine death until the induction of the delivery : a qualitative Internet-based study
- 2011
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Ingår i: Journal of obstetrics and gynaecology research. - : Wiley. - 1341-8076 .- 1447-0756 .- 0144-3615 .- 1364-6893. ; 37:11, s. 1677-84
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Tidskriftsartikel (refereegranskat)abstract
- AIM: This study aims to describe how mothers spend the period of time between being diagnosed with a dead baby in utero and the induction of the delivery.MATERIAL AND METHODS: Data were collected using a web questionnaire. Five hundred and fifteen women who had experienced a stillbirth after the 22nd week of gestation answered the open question: 'What did you do between the diagnosis of the child's death and the beginning of the delivery?' A qualitative content analysis method was used.RESULTS: The results show that some mothers received help to adapt to the situation, while for others, waiting for the induction meant further stress and additional psychological trauma in an already strained situation.CONCLUSION: There is no reason to wait with the induction unless the parents themselves express a wish to the contrary. Health care professionals, together with the parents, should try to determine the best time for the induction of the birth after the baby's death in utero. That time may vary, depending on the parents' preferences.
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| 9. |
- Erlandsson, Kerstin, et al.
(författare)
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Women's' premonitions prior to the death of their baby in utero and how they deal with the feeling that their baby may be unwell.
- 2012
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Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 1600-0412 .- 0001-6349. ; 91:1, s. 28-33
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Tidskriftsartikel (refereegranskat)abstract
- Objective. To identify if mothers to stillborn babies had had a premonition that their unborn child might not be well and how they dealt with that premonition. Design. A mixed method approach. Setting: 1 034 women answered a web questionnaire. Sample: 614 women fulfilled the inclusion criteria of having a stillbirth after the 22(nd) gestational week and answered questions about premonition. Methods. Qualitative content analysis was used for the open questions and descriptive statistics for questions with fixed alternatives. Main Outcome.Measure: The premonition of an unwell unborn baby. Results. In all 392/614 (64%) of the women had had a premonition that their unborn baby might be unwell; 274/614 (70%) contacted their clinic and were invited to come in for a check-up, but by then it was too late as the baby was already dead. A further 88/614 (22%) decided to wait until their next routine check-up, believing that the symptoms were part of the normal cycle of pregnancy, and that the fetus would move less towards the end of a pregnancy. Thirty women (8%) contacted their clinic, but were told that everything appeared normal without an examination of the baby. Conclusion. Women need to know that a decrease in fetal movements is an important indicator of their unborn baby´s health. Health care professionals should not delay an examination if a mother-to-be is worried of her unborn baby´s wellbeing.
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| 10. |
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