| 1. |
- Feldt, Emma, 1995, et al.
(författare)
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Temperature and concentration dependence of the electrochemical PtHg4 alloy formation for mercury decontamination
- 2023
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Ingår i: Separation and Purification Technology. - 1873-3794 .- 1383-5866. ; 319
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Tidskriftsartikel (refereegranskat)abstract
- New and improved methods to remove toxic mercury from contaminated waters and waste streams are highly sought after. Recently, it was shown that electrochemical alloy formation of PtHg4 on a platinum surface with mercury ions from solution can be utilized for decontamination, with several advantages over conventional techniques. Herein, we examine the alloy formation process in more detail by mercury concentration measurements using inductively coupled plasma mass spectrometry in batch measurements as well as electrochemical quartz crystal microbalance analysis both in batch and in flowing water with initial mercury concentrations ranging from 0.25 to 75000 µg L−1 Hg2+. Results show that mercury is effectively removed from all solutions and the rate of alloy formation is constant over time, as well as for very thick layers of PtHg4. The apparent activation energy for the electrochemical alloy formation was determined to be 0.29 eV, with a reaction order in mercury ion concentration around 0.8. The obtained results give new insights that are vital in the assessment and further development of electrochemical alloy formation as a method for large scale mercury decontamination.
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| 2. |
- Molander, Mikael, et al.
(författare)
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p-Mentha-1,3-dien-9-ol: A novel aggregation-sex pheromone for monitoring longhorn beetles (Cerambycidae) in Eurasia and North America
- 2022
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Ingår i: Journal of Applied Entomology. - : Wiley. - 0931-2048 .- 1439-0418. ; 146, s. 1098-1108
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Tidskriftsartikel (refereegranskat)abstract
- Longhorn beetles (Cerambycidae) are a diverse family of beetles that can cause considerable damage as forest pests and vectors of pathogens, as well as being important components of forest food webs and ecosystem functionality. In recent years, numerous cerambycid pheromones have been identified, revealing some broad general patterns in functionality in terms of sex or aggregation-sex pheromones in different subfamilies and different types of compounds characterizing the pheromones of various cerambycid taxa. Here, we describe the identification of the aggregation-sex pheromones of the Eurasian longhorn beetle Aromia moschata moschata (L.) (Cerambycinae; tribe Callichromatini) and the North American species Holopleura marginata LeConte (Cerambycinae; Holopleurini), as part of an ongoing effort to extend the taxonomic coverage of identified cerambycid pheromones and to expand the prospects for cerambycid monitoring into the study of biodiversity and ecosystem services. Both species were found to use the novel pheromone compound p-mentha-1,3-dien-9-ol, which also attracted significant numbers of the longhorn beetle Xestoleptura crassipes (LeConte) (Lepturinae; Lepturini) in trials in California. p-Mentha-1,3-dien-9-ol represents a class of pheromone compounds novel to both tribes (Callichromatini and Holopleurini), further increasing the chemical space of identified pheromones within the subfamily Cerambycinae. This compound is also noteworthy because it represents an entirely different chemical class of pheromones than the monoepoxide (E)-2-cis-6,7-epoxynonenal, previously reported as an aggregation-sex pheromone for the invasive Asian congener Aromia bungii (Faldermann).
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| 3. |
- Molander, Peter, et al.
(författare)
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Ehlers-Danlos Syndrome and Hypermobility Syndrome Compared with Other Common Chronic Pain Diagnoses-A Study from the Swedish Quality Registry for Pain Rehabilitation
- 2020
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Ingår i: Journal of Clinical Medicine. - : MDPI. - 2077-0383. ; 9:7
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Tidskriftsartikel (refereegranskat)abstract
- Although chronic pain is common in patients with Ehlers-Danlos syndrome (EDS) and hypermobility syndromes (HMS), little is known about the clinical characteristics of these groups. The main aim was to compare EDS/HMS with common local and generalized pain conditions with respect to Patient Reported Outcome Measures (PROMs). Data from the Swedish Quality Register for Chronic Pain (SQRP) from 2007 to 2016 (n= 40,518) were used, including patients with EDS/HMS (n= 795), fibromyalgia (n= 5791), spinal pain (n= 6693), and whiplash associated disorders (WAD) (n= 1229). No important differences in the PROMs were found between EDS and HMS. Women were represented in > 90% of EDS/HMS cases and fibromyalgia cases, and in about 64% of the other groups. The EDS/HMS group was significantly younger than the others but had a longer pain duration. The pain intensity in EDS/HMS was like those found in spinal pain and WAD; fibromyalgia had the highest pain intensity. Depressive and anxiety symptoms were very similar in the four groups. Vitality-a proxy for fatigue-was low both in EDS/HMS and fibromyalgia. The physical health was lower in EDS/HMS and fibromyalgia than in the two other groups. Patients with EDS/HMS were younger, more often female, and suffered from pain for the longest time compared with patients who had localized/regional pain conditions. Health-care clinicians must be aware of these issues related to EDS/HMS both when assessing the clinical presentations and planning treatment and rehabilitation interventions.
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| 4. |
- Molander, Peter, et al.
(författare)
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Interdisciplinary pain rehabilitation for patients with Ehlers-Danlos syndrome and hypermobility spectrum disorders
- 2024
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Ingår i: Journal of Rehabilitation Medicine. - : Foundation for Rehabilitation Information. - 1650-1977 .- 1651-2081. ; 56
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: Chronic pain is a common manifestation of Ehlers-Danlos syndrome and hypermobility spectrum disorders; thus it is often suggested that patients undergo generic interdisciplinary pain rehabilitation, despite there being little evidence to support this decision. The aim of this study is to examine the effectiveness of standard rehabilitation programmes for chronic pain on patients with Ehlers-Danlos syndrome and hypermobility spectrum disorders, compared with patients with other chronic pain disorders.SUBJECTS: Data, collected between 2008 and 2016, were extracted from a Swedish national registry. The patient data comprised of 406 cases with Ehlers-Danlos syndrome or hypermobility spectrum disorders, 784 cases with a whiplash-related diagnosis, 3713 cases with diagnoses relating to spinal pain, and 2880 cases of fibromyalgia.METHODS: The differences between groups on key outcome measures from pre- to 1-year follow-up after interdisciplinary pain rehabilitation were analysed using linear mixed effects models. Sensitivity analysis in the form of pattern-mixture modelling was conducted to discern the impact of missing data. RESULTS: No significant differences were found in improvements from pre- to 1-year follow-up for patients with Ehlers-Danlos syndrome or hypermobility spectrum disorder compared with other diagnostic groups regarding measures of health-related quality of life, mental health, or fatigue. At follow-up, differences in pain interference (d = -0.34 (95% confidence interval [95% CI] -0.5 to -0.18)), average pain (d = 0.22 (95% CI 0.11-0.62)) and physical functioning (d = 2.19 (95% CI 1.61-2.77)) were detected for the group with spinal-related diagnoses in relation to those with EDS/HSD, largely due to pre-treatment group differences. Sensitivity analysis found little evidence for missing data influencing the results.CONCLUSION: This study suggests that patients with Ehlers-Danlos syndrome/hypermobility spectrum disorders may benefit from inclusion in an interdisciplinary pain rehabilitation programme.
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| 5. |
- Pietilä Holmner, Elisabeth, 1953-, et al.
(författare)
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Long-term outcomes of multimodal rehabilitation in primary care for patients with chronic pain
- 2020
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Ingår i: Journal of Rehabilitation Medicine. - Uppsala : Foundation Rehabilitation Information. - 1650-1977 .- 1651-2081. ; 52:2
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: To investigate the outcomes one year after multimodal rehabilitation programmes in primary care for patients with chronic pain, both as a whole and for men and women separately. A second aim was to identify predictive factors for not being on sickness absence at follow-up after one year.Methods: A prospective longitudinal cohort study of 234 patients, 34 men and 200 women, age range 18–65 years, who participated in multimodal rehabilitation programmes in primary care in 2 Swedish county councils. Pain, physical and emotional functioning, coping, health-related quality of life, work-related factors, sickness absence (sick leave, sickness compensation/disability pension) were evaluated prior to and one year after multimodal rehabilitation programmes.Results: Patients showed significant improvements at 1-year follow-up for all measures (all p ≤ 0.004) except satisfaction with vocation (p = 0.060). The proportion of patients on sick leave decreased significantly at follow-up (p = 0.027), while there was no significant difference regarding the proportion of patients on sickness compensation/disability pension (p = 0.087). Higher self-rated work ability was associated with not being on sickness absence at 1-year follow-up (odds ratio (OR) 1.19, 95% confidence interval (CI) 1.21–1.06, p = 0.005).Conclusion: This study indicates that multimodal rehabilitation programmes in primary care could be beneficial for patients with chronic pain, since the outcomes at 1-year follow-up for pain, physical and emotional functioning, coping, and health-related quality of life were positive. However, the effect sizes were small and thus further development of multimodal rehabilitation programmes is warranted in order to improve the outcomes.
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| 6. |
- Soliman, Ahmed Elmahdy, 1994, et al.
(författare)
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Ischemic preconditioning affects phosphosites and accentuates myocardial stunning while reducing infarction size in rats.
- 2024
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Ingår i: Frontiers in cardiovascular medicine. - 2297-055X. ; 11
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Tidskriftsartikel (refereegranskat)abstract
- Ischemic preconditioning (IPC), i.e., brief periods of ischemia, protect the heart from subsequent prolonged ischemic injury, and reduces infarction size. Myocardial stunning refers to transient loss of contractility in the heart after myocardial ischemia that recovers without permanent damage. The relationship between IPC and myocardial stunning remains incompletely understood. This study aimed primarily to examine the effects of IPC on the relationship between ischemia duration, stunning, and infarct size in an ischemia-reperfusion injury model. Secondarily, this study aimed to examine to which extent the phosphoproteomic changes induced by IPC relate to myocardial contractile function.Rats were subjected to different durations of left anterior descending artery (LAD) occlusion, with or without preceding IPC. Echocardiograms were acquired to assess cardiac contraction in the affected myocardial segment. Infarction size was evaluated using triphenyl tetrazolium chloride staining. Phosphoproteomic analysis was performed in heart tissue from preconditioned and non-preconditioned animals. In contrast to rats without IPC, reversible akinesia was observed in a majority of the rats that were subjected to IPC and subsequently exposed to ischemia of 13.5 or 15min of ischemia. Phosphoproteomic analysis revealed significant differential regulation of 786 phosphopeptides between IPC and non-IPC groups, with significant associations with the sarcomere, Z-disc, and actin binding.IPC induces changes in phosphosites of proteins involved in myocardial contraction; and both accentuates post-ischemic myocardial stunning and reduces infarct size.
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| 7. |
- Stenberg, Gunilla, 1968-, et al.
(författare)
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Patients selected to participate in multimodal pain rehabilitation programmes in primary care : a multivariate cross-sectional study focusing on gender and sick leave
- 2020
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Ingår i: Scandinavian Journal of Pain. - : Walter de Gruyter. - 1877-8860 .- 1877-8879. ; 20:3, s. 511-524
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Tidskriftsartikel (refereegranskat)abstract
- Background and aims: A multimodal rehabilitation programme (MMRP) is an evidence-based treatment of chronic pain conditions. The complexity involved in chronic pain needs to be identified and evaluated in order to adapt the rehabilitation to patients' needs. The aim was to investigate the multivariate relationships between self-reported variables in patients with chronic pain before taking part in MMRP in primary care, with a special focus on gender and degree of sick leave.Methods: Prior to MMRP, 397 patients (339 women and 58 men) filled in a questionnaire about pain, healthcare aspects, health-related quality of life, anxiety and depression, coping, physical function, and work-related variables e.g. sick leave. Data were analysed by principal component analysis (PCA) and partial least square analysis.Results: The PCA identified four components that explained 47% of the variation in the investigated data set. The first component showed the largest variation and was primarily explained by anxiety and depression, quality of life, acceptance (activity engagement), and pain-related disability. Gender differences were only seen in one component with the pain variables having the highest loadings. Degree of sick leave was not well explained by the variables in the questionnaire.Conclusions: The questionnaire filled out by the patients prior to participation in MMRP in primary care identified much of the complexity of chronic pain conditions but there is room for improvement, e.g. regarding explanation of work-related factors. In the multivariate analysis, gender did not fall out as an important factor for how most patients answered the questions.
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| 8. |
- Svanholm, Frida, et al.
(författare)
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Work Interventions Within Interdisciplinary Pain Rehabilitation Programs (IPRP) - Frequency, Patient Characteristics, and Association with Self-Rated Work Ability
- 2023
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Ingår i: Journal of Pain Research. - : DOVE MEDICAL PRESS LTD. - 1178-7090. ; 16, s. 421-436
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Tidskriftsartikel (refereegranskat)abstract
- Background: Interdisciplinary pain rehabilitation programs (IPRPs) help people with chronic pain improve their health and manage their work; however, the way IPRPs address sick leave could be improved. Although work interventions can be a part of IPRP, it is not well known how and to what extent.Aim: This study explores the frequency of work interventions and the characteristics of patients who participate in work interventions as part of IPRP at specialist pain rehabilitation departments in Sweden. In addition, this study explores the association between participation in work interventions and change in patients self-rated work ability after IPRP.Methods: Data from the Swedish quality registry for pain rehabilitation (SQRP), which includes 3809 patients between 2016 and 2018, were analysed with descriptive statistics and regression analyses.Results: The results indicate a high participation rate in work interventions (90%). Some differences were evident concerning characteristics of patients who participated in different work interventions. The return-to-work (RTW) plan, the most frequently used work intervention, had the strongest association with change in self-rated work ability after IPRP. However, the effect sizes were small, and the initial score best explained the change. Furthermore, there were differences between employed and unemployed patients and employment had a positive association with change in self-rated work ability.Conclusion: More research is needed to understand IPRPs mechanisms and work interventions to support patients with chronic pain, reduce sick leave, and manage work. Employment status needs to be considered and interventions should be tailored to match the individual needs.
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| 9. |
- Wiklund, Tobias, et al.
(författare)
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Internet-Delivered Cognitive Behavioral Therapy for Insomnia Comorbid With Chronic Pain : Randomized Controlled Trial
- 2022
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Ingår i: Journal of Medical Internet Research. - : JMIR Publications Inc. - 1438-8871. ; 24:4
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Tidskriftsartikel (refereegranskat)abstract
- Background: Patients with chronic pain often experience insomnia symptoms. Pain initiates, maintains, and exacerbates insomnia symptoms, and vice versa, indicating a complex situation with an additional burden for these patients. Hence, the evaluation of insomnia-related interventions for patients with chronic pain is important. Objective: This randomized controlled trial examined the effectiveness of internet-based cognitive behavioral therapy for insomnia (ICBT-i) for reducing insomnia severity and other sleep- and pain-related parameters in patients with chronic pain. Participants were recruited from the Swedish Quality Registry for Pain Rehabilitation. Methods: We included 54 patients (mean age 49.3, SD 12.3 years) who were randomly assigned to the ICBT-i condition and 24 to an active control condition (applied relaxation). Both treatment conditions were delivered via the internet. The Insomnia Severity Index (ISI), a sleep diary, and a battery of anxiety, depression, and pain-related parameter measurements were assessed at baseline, after treatment, and at a 6-month follow-up (only ISI, anxiety, depression, and pain-related parameters). For the ISI and sleep diary, we also recorded weekly measurements during the 5-week treatment. Negative effects were also monitored and reported. Results: Results showed a significant immediate interaction effect (time by treatment) on the ISI and other sleep parameters, namely, sleep efficiency, sleep onset latency, early morning awakenings, and wake time after sleep onset. Participants in the applied relaxation group reported no significant immediate improvements, but both groups exhibited a time effect for anxiety and depression at the 6-month follow-up. No significant improvements on pain-related parameters were found. At the 6-month follow-up, both the ICBT-i and applied relaxation groups had similar sleep parameters. For both treatment arms, increased stress was the most frequently reported negative effect. Conclusions: In patients with chronic pain, brief ICBT-i leads to a more rapid decline in insomnia symptoms than does applied relaxation. As these results are unique, further research is needed to investigate the effect of ICBT-i on a larger sample size of people with chronic pain. Using both treatments might lead to an even better outcome in patients with comorbid insomnia and chronic pain.
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| 10. |
- Zhao, Xiang, PhD, 1987-, et al.
(författare)
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Fear network and pain extent : Interplays among psychological constructs related to the fear-avoidance model
- 2023
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Ingår i: Journal of Psychosomatic Research. - : Elsevier. - 0022-3999 .- 1879-1360. ; 167
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Tidskriftsartikel (refereegranskat)abstract
- Objective: Psychological constructs related to the fear-avoidance model such as fear of movement, pain catastrophizing, and affective distress have been found to be inter-related among patients with chronic pain. However, relationships of these constructs have mostly been examined using regression-based analyses. This cross-sectional study employs a novel analytical approach, network analysis, to illustrate the complex interplays among these variables as well as pain intensity and pain interference.Methods: This study utilized the Swedish Quality Registry for Pain Rehabilitation, including data from 10,436 participants (76.0% women; Mage = 45.0 years). Networks were analyzed separately for patients with different pain extents (i.e., numbers of pain locations) as the interplays may differ qualitatively depending on pain extent.Results: We found that patients with a larger pain extent showed a worse clinical presentation (i.e., more depression and anxiety, increased fear of movement and pain interference), and their network differed from the patients with a smaller number of pain extent in terms of how strongly key variables were interconnected. In all network models, pain interference and catastrophizing showed consistently influential roles.Conclusion: Our findings highlight the interactive nature of psychological aspects of pain and how interrelated associations differ depending on pain extent. Findings are discussed based on ideas on how both fear and pain become overgeneralized.
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| 11. |
- Zhao, Xiang, PhD, 1987-, et al.
(författare)
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Prognostic subgroups of chronic pain patients using latent variable mixture modeling within a supervised machine learning framework
- 2024
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Ingår i: Scientific Reports. - : Nature Publishing Group. - 2045-2322. ; 14:1
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Tidskriftsartikel (refereegranskat)abstract
- The present study combined a supervised machine learning framework with an unsupervised method, finite mixture modeling, to identify prognostically meaningful subgroups of diverse chronic pain patients undergoing interdisciplinary treatment. Questionnaire data collected at pre-treatment and 1-year follow up from 11,995 patients from the Swedish Quality Registry for Pain Rehabilitation were used. Indicators measuring pain characteristics, psychological aspects, and social functioning and general health status were used to form subgroups, and pain interference at follow-up was used for the selection and the performance evaluation of models. A nested cross-validation procedure was used for determining the number of classes (inner cross-validation) and the prediction accuracy of the selected model among unseen cases (outer cross-validation). A four-class solution was identified as the optimal model. Identified subgroups were separable on indicators, predictive of long-term outcomes, and related to background characteristics. Results are discussed in relation to previous clustering attempts of patients with diverse chronic pain conditions. Our analytical approach, as the first to combine mixture modeling with supervised, targeted learning, provides a promising framework that can be further extended and optimized for improving accurate prognosis in pain treatment and identifying clinically meaningful subgroups among chronic pain patients.
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