| 1. |
- Backmark, Anna, 1979, et al.
(författare)
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Affinity tags can reduce merohedral twinning of membrane protein crystals
- 2008
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Ingår i: Acta Crystallographica. Section D: Biological Crystallography. - 1399-0047 .- 0907-4449. ; D64, s. 1183-1186
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Tidskriftsartikel (refereegranskat)abstract
- This work presents a comparison of the crystal packing of three eukaryotic membrane proteins: human aquaporin 1, human aquaporin 5 and a spinach plasma membrane aquaporin. All were purified from expression constructs both with and without affinity tags. With the exception of tagged aquaporin 1, all constructs yielded crystals. Two significant effects of the affinity tags were observed: crystals containing a tag typically diffracted to lower resolution than those from constructs encoding the protein sequence alone and constructs without a tag frequently produced crystals that suffered from merohedral twinning. Twinning is a challenging crystallographic problem that can seriously hinder solution of the structure. Thus, for integral membrane proteins, the addition of an affinity tag may help to disrupt the approximate symmetry of the protein and thereby reduce or avoid merohedral twinning.
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| 2. |
- Gallo, Valentina, et al.
(författare)
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Physical activity and risk of Amyotrophic Lateral Sclerosis in a prospective cohort study
- 2016
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Ingår i: European Journal of Epidemiology. - : Springer Science and Business Media LLC. - 0393-2990 .- 1573-7284. ; 31:3, s. 255-266
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Tidskriftsartikel (refereegranskat)abstract
- Previous case-control studies have suggested a possible increased risk of Amyotrophic Lateral Sclerosis (ALS) with physical activity (PA), but this association has never been studied in prospective cohort studies. We therefore assessed the association between PA and risk of death from ALS in the European Prospective Investigation into Cancer and Nutrition. A total of 472,100 individuals were included in the analysis, yielding 219 ALS deaths. At recruitment, information on PA was collected through standardised questionnaires. Total PA was expressed by the Cambridge Physical Activity Index (CPAI) and analysed in relation to ALS mortality, using Cox hazard models. Interactions with age, sex, and anthropometric measures were assessed. Total PA was weakly inversely associated with ALS mortality with a borderline statistically significant trend across categories (p = 0.042), with those physically active being 33 % less likely to die from ALS compared to those inactive: HR = 0.67 (95 % CI 0.42-1.06). Anthropometric measures, sex, and age did not modify the association with CPAI. The present study shows a slightly decreased-not increased like in case-control studies-risk of dying from ALS in those with high levels of total PA at enrolment. This association does not appear confounded by age, gender, anthropometry, smoking, and education. Ours was the first prospective cohort study on ALS and physical activity.
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| 3. |
- Pigg, Maria, et al.
(författare)
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A comparative analysis of MRI, CBCT and conventional radiography in patients with atypical odontalgia and symptomatic apical periodontitis : preliminary results
- 2006
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 30:4, s. 173-174
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Aim: Atypical odontalgia(AO) is a chronic pain condition located in the teeth and jaws. It has been suggested, that AO is best regarded as a neuropathic pain condition, but knowledge regarding the etiology, diagnostics, and management of AO is not yet satisfactory. This pilot study evaluates the clinical usefulness of more recently developed imaging methods for intraoral pain conditions. The aim is to compare the diagnostic findings using magnetic resonance imaging(MRI) and cone beam computed tomography(CBCT) with the findings from conventional radiography in patients with atypical odontalgia(AO) and symptomatic apical periodontitis(SAP). Material and methods: 12 patients (9 F, 3 M) mean age 50,25 years, range 36 - 63 years participated in the study. The patients were referred to the Orofacial Pain Unit or the Department of Endodontics, Faculty of Odontology, Malmö University. Inclusion criteria for AO were chronic pain (>6 months) located in a region where a tooth had been endodontically or surgically treated, pain with no pathological cause detectable in clinical or radiological examinations. For SAP, the inclusion criteria were recurrent pain from a tooth diagnosed with apical periodontitis in a clinical and radiographic examination. Ten of the patients in the study were diagnosed with AO and two with SAP. The patients were clinically assessed with a qualitative somatosensory examination, a dental examination, an examination of the masticatory system(RDC/TMD), and panoramic and intraoral radiographs. A questionnaire was used to gather information about pain characteristics, psychosocial status(SCL-90), and quality of life. Besides these measures, each patient underwent a CBCT(3D-Accuitomo, J Morita Co) examination and a MRI(Siemens Sonata Vision 1.5 T) examination with and without contrast enhancement. Contrast was enhanced by injections of Magnevist (469 mg/ml, Schering Nordiska). Bone destruction, sclerosis, and signs of inflammation were the main parameters studied. Results: In the preliminary results, average pain intensity was 6.3 on a numerical rating scale(NRS) and average pain duration was 3,6 years. 83% exhibited somatosensory abnormalities. Bone destruction not visible in the intraoral and panoramic radiographs was detected with CBCT in 40% (4/10) of the patients diagnosed with AO, and signs of inflammation were detected in the MRIs of 20% (2/10) of the patients diagnosed with AO. Conclusion: Preliminary findings indicate that CBCT and MRI can provide additional information to conventional radiography in the diagnosis of intraoral orofacial pain. Further studies with larger sample sizes of AO and SAP patients are necessary to determine the clinical relevance of these findings.
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| 4. |
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| 5. |
- Pigg, Maria, et al.
(författare)
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Diagnostic yield of conventional radiographic and cone-beem computed tomographic images in patients with atypical odontalgia
- 2011
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Ingår i: International Endodontic Journal. - : John Wiley & Sons. - 0143-2885 .- 1365-2591. ; 12:44, s. 1092-1101
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Tidskriftsartikel (refereegranskat)abstract
- Abstract AIM: To investigate whether the additional diagnostic yield of a cone-beam computed tomography (CBCT) examination over conventional radiographs in patients primarily suspected of having atypical odontalgia (AO) improves differentiation between AO and symptomatic apical periodontitis (SAP) in patients with severe chronic intraoral pain. METHODOLOGY: In this clinical study, 25 patients (mean age 54 ± 11 years, range 34-72) participated; 20 were diagnosed with AO and 5 with SAP. All patients were recruited from the clinics of the Faculty of Odontology, Malmö University. AO inclusion criteria were chronic pain (>6 months) in a region where a tooth had been endodontically or surgically treated, with no pathological cause detectable in clinical or radiologic examinations. SAP inclusion criteria were recurrent pain from a tooth diagnosed with apical periodontitis in clinical and radiographic examinations. Assessments comprised a self-report questionnaire on pain characteristics, a comprehensive clinical examination and a radiographic examination including panoramic and intraoral radiographs and CBCT images. The main outcome measure was periapical bone destruction. RESULTS: Sixty per cent of patients with AO had no periapical bone destructions detectable with any radiographic method. Overall, CBCT rendered 17% more periapical bone destructions than conventional radiography. Average pain intensity in patients with AO was 5.6 (± 1.8) on a 0-10 numerical rating scale, and average pain duration was 4.3 (± 5.2) years. CONCLUSION: Cone-beam computed tomography improves identification of patients without periapical bone destruction, which may facilitate differentiation between AO and SAP.
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| 6. |
- Wikberg, Carl, et al.
(författare)
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Comparison Between the Montgomery-Asberg Depression Rating Scale–Self and the Beck Depression Inventory II in Primary Care
- 2015
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Ingår i: The Primary Care Companion for CNS Disorders. - 0160-6689 .- 1555-2101 .- 2155-7772. ; 17:3
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Tidskriftsartikel (refereegranskat)abstract
- Objective: The Montgomery-Asberg Depression Rating Scale–Self (MADRS-S) and the Beck Depression Inventory II (BDI-II) are commonly used self-assessment instruments for screening and diagnosis of depression. The BDI-II has 21 items and the MADRS-S has 9 items. These instruments have been tested with psychiatric inpatients but not in outpatient primary care, where most patients with symptoms of depression initially seek treatment. The purpose of this study was to compare these 2 instruments in the primary care setting. Method: Data were collected from 2 primary care randomized controlled trials that were performed from 2010 to 2013 in Sweden: the Primary Care Self-Assessment MADRS-S Study and Primary Care Internet-Based Cognitive Behavioral Therapy Study. There were 146 patients (73 patients each from both trials) who had newly diagnosed mild or moderate depression (per DSM-IV recommendations) and who had assessment with both the MADRS-S and BDI-II at primary care centers. Comparability and reliability of the instruments were estimated by Pearson product moment correlation and Cronbach α. Results: A good correlation was observed between the 2 instruments: 0.66 and 0.62 in the 2 study cohorts. The reliability within the 2 study cohorts was good for both MADRS-S (Cronbach α: 0.76 for both cohorts) and BDI-II items (Cronbach α: 0.88 and 0.85). Conclusions: The 2 instruments showed good comparability and reliability for low, middle, and high total depression scores. The MADRS-S may be used as a rapid, easily administered, and inexpensive tool in primary care and has results comparable to the BDI-II in all domains.
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| 7. |
- Wolf, Eva, et al.
(författare)
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Long-term follow-up by means of a questionnaire of 109 patients with long-lasting orofacial pain.
- 2002
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Ingår i: Swedish Dental Journal. - : Swedish Dental Association. - 0347-9994. ; 26:3, s. 125-34
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Tidskriftsartikel (refereegranskat)abstract
- The aims were to follow-up, analyse and compare the pain status after 4-9 years with that at the baseline examination of 109 consecutive patients referred to the Pain Group at the Faculty of Odontology in Malmö, Sweden during the period 1988-1993 due to long-lasting orofacial pain. A further aim was to identify predictive factors of significance for pain alteration. 85 (78%) women with a median age of 51 years and 24 (22%) men with a median age of 60 years were included in the study. A survey of the pain status at the follow-up was conducted by means of a mailed questionnaire. The questionnaire covered the following aspects: pain alteration, pain intensity, pain location, medication and education. After one reminder, the non-responding patients were called for a telephone interview. A response level of 85% was obtained. Significant improvements were noted by the patients in the answers of the questionnaire in mainly three areas; the patients answered individually that pain relief had occurred, pain intensity rated on the VAS was lower at follow-up compared to the baseline examination and a decrease in drug use was reported. The responses indicated pain relief for 75% of the patients. However, only 27% of the patients experienced total disappearance of pain. Medication at baseline with opioids, muscle relaxants with central effect, antidepressants, neuroleptics, hypnotics or sedatives was found to be a predictive factor for persistent pain.
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| 8. |
- Adamson, Carly, et al.
(författare)
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Dapagliflozin for Heart Failure According to Body Mass Index : The DELIVER Trial.
- 2022
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Ingår i: European heart journal. - : Oxford University Press (OUP). - 0195-668X .- 1522-9645. ; 43:41, s. 4406-4417
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Tidskriftsartikel (refereegranskat)abstract
- AIMS: Obesity is common and associated with unique phenotypic features in heart failure with preserved ejection fraction (HFpEF). Therefore, understanding the efficacy and safety of new therapies in HFpEF patients with obesity is important. The effects of dapagliflozin were examined according to body mass index (BMI) among patients in the Dapagliflozin Evaluation to Improve the LIVEs of Patients With PReserved Ejection Fraction Heart Failure trial. METHODS AND RESULTS: Body mass index was analysed by World Health Organization (WHO) categories and as a continuous variable using restricted cubic splines. Body mass index ranged from 15.2 to 50 kg/m2 with a mean value of 29.8 (standard deviation +/- 6.1) kg/m2. The proportions, by WHO category, were: normal weight 1343 (21.5%); overweight 2073 (33.1%); Class I obesity 1574 (25.2%); Class II obesity 798 (12.8%); and Class III obesity 415 (6.6%). Compared with placebo, dapagliflozin reduced the risk of the primary outcome to a similar extent across these categories: hazard ratio (95% confidence interval): 0.89 (0.69-1.15), 0.87 (0.70-1.08), 0.74 (0.58-0.93), 0.78 (0.57-1.08), and 0.72 (0.47-1.08), respectively (P-interaction = 0.82). The placebo-corrected change in Kansas City Cardiomyopathy Questionnaire total symptom score with dapagliflozin at 8 months was: 0.9 (-1.1, 2.8), 2.5 (0.8, 4.1), 1.9 (-0.1, 3.8), 2.7 (-0.5, 5.8), and 8.6 (4.0, 13.2) points, respectively (P-interaction = 0.03). The placebo-corrected change in weight at 12 months was: -0.88 (-1.28, -0.47), -0.65 (-1.04, -0.26), -1.42 (-1.89, -0.94), -1.17 (-1.94, -0.40), and -2.50 (-4.4, -0.64) kg (P-interaction = 0.002). CONCLUSIONS: Obesity is common in patients with HFpEF and is associated with higher rates of heart failure hospitalization and worse health status. Treatment with dapagliflozin improves cardiovascular outcomes across the spectrum of BMI, leads to greater symptom improvement in patients with obesity, compared with those without, and has the additional benefit of causing modest weight loss.
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| 9. |
- af Winklerfelt Hammarberg, Sandra, et al.
(författare)
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Clinical effectiveness of care managers in collaborative primary health care for patients with depression : 12-and 24-month follow-up of a pragmatic cluster randomized controlled trial
- 2022
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Ingår i: BMC Primary Care. - : Springer Nature. - 2731-4553. ; 23:1
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Tidskriftsartikel (refereegranskat)abstract
- Background In previous studies, we investigated the effects of a care manager intervention for patients with depression treated in primary health care. At 6 months, care management improved depressive symptoms, remission, return to work, and adherence to anti-depressive medication more than care as usual. The aim of this study was to compare the long-term effectiveness of care management and usual care for primary care patients with depression on depressive symptoms, remission, quality of life, self-efficacy, confidence in care, and quality of care 12 and 24 months after the start of the intervention. Methods Cluster randomized controlled trial that included 23 primary care centers (11 intervention, 12 control) in the regions of Vastra Gotaland and Dalarna, Sweden. Patients >= 18 years with newly diagnosed mild to moderate depression (n = 376: 192 intervention, 184 control) were included. Patients at intervention centers co-developed a structured depression care plan with a care manager. Via 6 to 8 telephone contacts over 12 weeks, the care manager followed up symptoms and treatment, encouraged behavioral activation, provided education, and communicated with the patient's general practitioner as needed. Patients at control centers received usual care. Adjusted mixed model repeated measure analysis was conducted on data gathered at 12 and 24 months on depressive symptoms and remission (MADRS-S); quality of life (EQ5D); and self-efficacy, confidence in care, and quality of care (study-specific questionnaire). Results The intervention group had less severe depressive symptoms than the control group at 12 (P = 0.02) but not 24 months (P = 0.83). They reported higher quality of life at 12 (P = 0.01) but not 24 months (P = 0.88). Differences in remission and self-efficacy were not significant, but patients in the intervention group were more confident that they could get information (53% vs 38%; P = 0.02) and professional emotional support (51% vs 40%; P = 0.05) from the primary care center. Conclusions Patients with depression who had a care manager maintained their 6-month improvements in symptoms at the 12- and 24-month follow-ups. Without a care manager, recovery could take up to 24 months. Patients with care managers also had significantly more confidence in primary care and belief in future support than controls.
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| 10. |
- Agredo Chavez, Angelica Maria, et al.
(författare)
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Cracking and Fatigue of Heavy Loaded Prestressed Concrete Bridge in Sweden
- 2022
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Ingår i: IABSE Symposium Prague 2022: Challenges for Existing and Oncoming Structures - Report, International Association for Bridge and Structural Engineering. - Zürich : International Association for Bridge and Structural Engineering. ; , s. 792-799
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Konferensbidrag (refereegranskat)abstract
- A prestressed concrete bridge was built in 1963 with BBRV cables. It has three spans and a total length of 134.8 m. Due to mining activities the bridge was loaded with trucks with a total weight of 90 ton during 2012-2014 and from 2019. Crack development has been monitored manually and from 2020 with strain gauges and LVDTs.Cracks normally vary between 0.1 to 0.3 mm in width and grow in length with time. In November 2020 some of the strain gauges on the concrete showed alarming growth and the bridge was closed for traffic. Additional strain gauges were installed on vertical reinforcement bars and an assessment was carried out of the fatigue capacity of the bridge. It was found that the new strain gauges did not indicate any growth in strain and that the fatigue capacity was sufficient. The bridge could be opened again for traffic after being closed for five weeks. Monitoring drift in the strain gauges and fatigue are discussed.
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