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Hammareus F, Nilsson L, Ong KL, Kristenson M, Festin K, Lundberg A, Chung RWS, Swahn E, Alfredsson J, Holm Nielsen S, Jonasson L. Investigation of type 1 collagen a1 chain in plasma as a potential novel biomarker for prediction of coronary heart disease. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Remodeling of the extracellular matrix (ECM) plays a crucial role in development and progression of atherosclerosis. Collagens, in particular type I collagen, are the most abundant ECM proteins in an atherosclerotic plaque. Recently, type I collagen α1 chain (COL1α1) in plasma was identified as a potential predictor of coronary heart disease (CHD).
Aim
The aim was to further confirm the predictive value of COL1α1 and also to investigate its correlates in a population-based cohort as well as changes over time in patients with manifest CHD in Sweden.
Methods
In a total of 1007 well-characterized individuals (50% women), 86 CHD cases and 184 sex- and age-matched controls were identified at 13 years follow-up. CHD at follow-up was defined as first-time event of myocardial infarction (MI) or invasive coronary intervention. Plasma levels of COL1α1 was quantified by the Luminex assay while PRO-C1 and C1M, two markers of type I collagen synthesis and degradation, respectively, were quantified by ELISA. In Cox proportional hazard analysis, log2 values of biomarker levels were used. In addition, temporal change of COL1α1 levels was also examined in a cohort of 125 patients with acute MI followed for 6 months.
Results
COL1α1 levels were significantly associated with incident CHD, both unadjusted (HR = 0.69, 95% CI 0.56–0.87, p=0.001) and after multiple adjustment (HR = 0.55, 95% CI 0.41–0.75, p<0.001). PRO-C1 was similarly associated with CHD, unadjusted (HR = 0.62, 95% CI 0.47–0.82, p=0.001) as well as adjusted (HR = 0.61, 95% CI 0.43–0.86, p=0.005), while C1M was not. In patients with acute MI, COL1α1 levels remained stable over 6 months. COL1α1 was significantly correlated to PRO-C1 (r=0.73, p<0.001), while there were no correlations to C1M, markers of inflammation (C-reactive protein, interleukin-6, matrix metalloproteinase-9) or myocardial injury (troponin T).
Conclusions
Circulating COL1α1 in plasma was independently and inversely associated with incident CHD. Furthermore, COL1α1 levels appeared to be relatively stable after an acute MI. COL1α1 levels seem to reflect collagen synthesis rather than collagen degradation and inflammation. Future studies are needed to confirm whether COL1α1 is a clinically useful marker and/or predictor of CHD.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): This research was in part financed by a grant from the Region of Östergötland, Sweden, aimed towards scientists early in their career. We would like to thank the people behind this grant for contributing to this research.This research was also partly supported by Futurum - the academy for healthcare in Region Jönköping County.
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Affiliation(s)
- F Hammareus
- Department of Medical and Health Sciences Linkoping University , Linkoping , Sweden
| | - L Nilsson
- Linkoping University , Linkoping , Sweden
| | - K L Ong
- University of New South Wales Sydney , Sydney , Australia
| | | | - K Festin
- Linkoping University , Linkoping , Sweden
| | - A Lundberg
- Linkoping University , Linkoping , Sweden
| | | | - E Swahn
- Linkoping University , Linkoping , Sweden
| | | | - S Holm Nielsen
- Technical University of Denmark , Kongens Lyngby , Denmark
| | - L Jonasson
- Linkoping University , Linkoping , Sweden
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Andersson T, Nilsson L, Larsen F, Carlberg B, Soderberg S. Dyspnea and perfusion defects (V/Q scan) are common after an acute pulmonary embolus whereas chronic thromboembolic pulmonary hypertension (CTEPH) is a rare sequele. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Acute pulmonary embolism (PE), a common disease with substantial morbidity and mortality. Many previous studies have focused on the short-term consequences after an acute PE, but less attention has been directed to the long-term effects of a PE. The most feared complication is chronic thromboembolic pulmonary hypertension (CTEPH), with reported incidence rates ranging from 0.6 to 4.8%. Even though CTEPH is a rare complication after PE, dyspnea and functional impairment are common complaints, and a syndrome named PPES (post-PE-syndrome) has been suggested. The aim of this study was to follow a large national-wide cohort of post-PE-patients and to gather information regarding long-term symptoms and to determine the prevalence of CTEPH.
Patients and methods
We identified all patients diagnosed with acute PE in 2005 (ICD-10-SE: I26.0 and I26.9) that were registered in the Swedish National Patient Register (NPR), which has nearly 100% coverage.
In 2007, all surviving individuals were invited to participate by letter. They were asked to complete a questionnaire regarding symptoms and risk factors for long-term sequele including CTEPH.
Individuals who reported dyspnea or had known risk factors for CTEPH were invited to a follow-up with blood tests (NT-pro-BNP) and pulmonary scintigraphy. If any perfusion defects were detected, an echocardiography was performed. If signs of pulmonary hypertension, a referral was done to the regional PAH-center.
Results
In 2005, 5793 unique patients were admitted with a PE diagnosis in Sweden. Of those, 3510 were still alive in 2007, and 3226 individuals were contacted and asked to complete the questionnaire. Altogether 2105 (65%) individuals returned the questionnaire, and 53% reported dyspnea and 15% were asymptomatic but had risk factors for CTEPH. Altogether 944 individuals were referred for further follow-up including a recommendation to perform a V/Q-scan. Altogether 530 V/Q-scans were performed and 44% showed perfusion defects, whereof 85% had an echocardiography. Twenty-seven % of them registered a systolic right ventricular pressure of at least 30 mmHg. Referrals resulted in 6 cases with proved CTEPH. In parallel, 10 patients with CTEPH diagnosed before 2005 were detected, and 8 patients were diagnosed after 2005 and outside the study.Altogether 24 patients with CTEPH were thus identified and the cumulative incidence of CTEPH ranged between 0.7 and 1.2%.
Conclusion
Dyspnea is common after an acute PE and over 40% of them have perfusion defects on a V/Q scan, suggesting the presence of a post PE-syndrome (PPES). The incidence of CTEPH is however low. More research is needed to better define PPES.
Funding Acknowledgement
Type of funding sources: Private grant(s) and/or Sponsorship. Main funding source(s): Actelion PharamceuticalsSwedish Heart and Lung Foundation
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Affiliation(s)
- T Andersson
- Umea University, Department of Public Health and Clinical Medicine , Umea , Sweden
| | - L Nilsson
- Umea University, Department of Public Health and Clinical Medicine , Umea , Sweden
| | - F Larsen
- Karolinska University Hospital, Department of Clinical Physiology , Stockholm , Sweden
| | - B Carlberg
- Umea University, Department of Public Health and Clinical Medicine , Umea , Sweden
| | - S Soderberg
- Umea University, Department of Public Health and Clinical Medicine , Umea , Sweden
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Sah V, Karlsson J, Bucher V, Olofsson Bagge R, Ny L, Nilsson L, Nilsson J. Using patient-derived xenografts as sources of 3D tumor sphere cultures to study autologous tumor-infiltrating lymphocytes in metastatic uveal melanoma. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00922-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Viking T, Wenzer J, Hylin U, Nilsson L. Peer support workers’ role and expertise and interprofessional learning in mental health care: a scoping review. J Interprof Care 2022; 36:828-838. [PMID: 35129027 DOI: 10.1080/13561820.2021.2014796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- T. Viking
- University West, Trollhättan, Sweden
| | - J. Wenzer
- University of Gothenburg, Gothenburg, Sweden
| | - U. Hylin
- Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden
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Eriksson C, Visuri I, Vigren L, Nilsson L, Kärnell A, Hjortswang H, Bergemalm D, Almer S, Hertervig E, Karlén P, Strid H, Halfvarson J. Clinical effectiveness of golimumab in ulcerative colitis: a prospective multicentre study based on the Swedish IBD Quality Register, SWIBREG. Scand J Gastroenterol 2021; 56:1304-1311. [PMID: 34415803 DOI: 10.1080/00365521.2021.1963466] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVES Clinical trials demonstrated that golimumab is effective in anti-TNF naïve patients with ulcerative colitis. We aimed to assess the clinical effectiveness of golimumab in a real-world setting. MATERIALS AND METHODS This was a prospective cohort study, conducted at 16 Swedish hospitals. Data were collected using an electronic case report form. Patients with active ulcerative colitis, defined as Mayo endoscopic subscore ≥2 were eligible for inclusion. The primary outcomes were clinical effectiveness at 12 weeks and 52 weeks, i.e. response (defined as a decrease in Mayo score by ≥3 points or 30% from baseline) and remission (defined as a Mayo score of ≤2 with no individual subscores >1). RESULTS Fifty patients were included. At study entry, 70% were previously exposed to anti-TNF, 16% to vedolizumab, and 96% to immunomodulators. The 12 and 52-week drug continuation rates were 37/50 (74%) and 23/50 (46%), respectively. The 12-week response rate was 14/50 (28%), the remission rate, 8/50 (16%) and the corresponding figures at week 52 were 13/50 (26%) and 10/50 (20%). Among patients who continued golimumab, the median Mayo score decreased from 7 (6-9) at baseline to 1 (0-5) at 52 weeks (p < .01) and the faecal calprotectin decreased from 862 (335-1759) µg/g to 90 (34-169) µg/g (p < .01). Clinical response at week 12 was highly predictive of clinical remission at week 52 (adjusted OR: 73.1; 95% CI: 4.5‒1188.9). CONCLUSIONS The majority of golimumab treated patients represented a treatment refractory patient-group. Despite this, our results confirm that golimumab is an effective therapy in ulcerative colitis.
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Affiliation(s)
- Carl Eriksson
- Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.,Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Isabella Visuri
- Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | | | - Linda Nilsson
- Department of Gastroenterology, Danderyd Hospital, Stockholm, Sweden
| | | | - Henrik Hjortswang
- Department of Gastroenterology and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Daniel Bergemalm
- Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | | | - Sven Almer
- Karolinska Institutet, Department of Medicine, Solna, IBD-Unit, Division of Gastroenterology, Karolinska University Hospital, Stockholm, Sweden
| | - Erik Hertervig
- Department of Gastroenterology, Skåne University Hospital, Lund, Sweden
| | - Per Karlén
- Department of Gastroenterology, Danderyd Hospital, Stockholm, Sweden
| | - Hans Strid
- Department of Internal Medicine, Södra Älvsborg Hospital, Borås, Sweden
| | - Jonas Halfvarson
- Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
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Ogmundsdottir Michelsen H, Henriksson P, Wallert J, Back M, Sjolin I, Schlyter M, Hagstrom E, Kiessling A, Held C, Hag E, Nilsson L, Schiopu A, Zaman MJ, Leosdottir M. Organizational and patient-level predictors for reaching key risk factor targets in cardiac rehabilitation after myocardial infarction – the perfect-CR study. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The benefits of specific cardiac rehabilitation (CR) programme components on patient outcomes after myocardial infarction (MI) remain unclear, as does their relative predictive strength compared to patient-level predictors.
Purpose
To identify CR organizational and patient-level predictors for reaching risk factor targets at one-year post-MI.
Methods
This was an observational survey- and registry-based study. Data on CR organization at all 78 CR centres in Sweden was collected in 2016 and merged with individual patient data from nationwide registries (n=7549, median age 64 years, 24% females). Cross-validation resampled orthogonal partial least squares discriminant analysis identified predictors for reaching treatment targets for low-density lipoprotein-cholesterol (LDL-C<1.8 mmol/L), blood pressure (BP<140/90 mmHg) and smoking abstinence (yes/no). Predictors with Variables of Importance for the Projection (VIP) value >0.8 and 95% confidence intervals (CI) excluding zero, were considered meaningful.
Results
Of the 71 analysed organizational variables, 36 were identified as meaningful predictors for reaching LDL-C and 35 for BP targets (Figure 1). The strongest predictors (VIP [95% CI]) for LDL-C and BP were: offering psychosocial management at initial CR assessment 2.09 [1.70–2.49]; 2.34 [1.90–2.78], having a CR team psychologist 1.59 [1.28–1.91]; 2.00 [1.46–2.55], having extended CR centre opening hours 2.17 [1.95–2.40]; 1.51 [1.03–2.00], staff reporting satisfaction with CR centre facilities 1.55 [1.07–2.04]; 1.96 [1.64–2.28], having a medical director 1.71 [1.45–1.97]; 1.47 [1.07–1.87], nurses using protocols for antihypertensive and/or lipid lowering medication adjustment 1.58 [1.35–1.81]; 1.56 [1.03–2.08], having operational team meetings 1.36 [1.08–1.64]; 1.34 [0.99–1.70], and using audit data for quality improvement 1.00 [0.79–1.20]; 1.27 [0.99–1.56]. Offering pre-exercise-based CR (exCR) assessment and different modes of exCR were predictors for reaching both targets. The strongest patient-level predictor of reaching LDL-C target was low baseline LDL-C 3.90 [3.25–4.56], and for BP it was having no history of hypertension 2.93 [2.74–3.12]. Second, participation in exCR was the strongest predictor for both outcomes 1.60 [0.83–2.37]; 1.50 [1.15–1.86]. For smoking abstinence, 5 organizational variables were identified as meaningful predictors, the strongest being prescription of varenicline by the centre physicians 1.98 [0.13–3.84] (Figure 2). The strongest patient-level predictors were exCR participation 2.51 [2.24–2.79] and socioeconomic status variables e.g., income 1.67 [1.28–2.06], living with partner 1.47 [0.84–2.09] and education 0.80 [0.48–1.12].
Conclusion
The study identified multiple CR organizational and patient-level predictors for reaching key risk factor targets one-year post-MI. The results might contribute to defining the optimal composition of comprehensive CR programmes.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): 1) The Swedish Research Council for Health, Working Life and Welfare (FORTE)2) The Swedish Heart and Lung Foundation (Hjärt Lung Fonden)
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Affiliation(s)
| | - P Henriksson
- Karolinska Institute, Department of Clinical Sciences Danderyd Hospital, Stockholm, Sweden
| | - J Wallert
- Karolinska Institute, Centre for Psychiatry Research, Department of Clinical Neuroscience, Stockholm, Sweden
| | - M Back
- Sahlgrenska University Hospital, Department of Occupational therapy and Physiotherapy, Gothenburg, Sweden
| | - I Sjolin
- Skane University Hospital, Department of Cardiology, Malmo, Sweden
| | - M Schlyter
- Skane University Hospital, Department of Cardiology, Malmo, Sweden
| | - E Hagstrom
- Uppsala University, Department of Medical Sciences, Cardiology and Uppsala Clinical Research Centre, Uppsala, Sweden
| | - A Kiessling
- Karolinska Institute, Department of Clinical Sciences Danderyd Hospital, Stockholm, Sweden
| | - C Held
- Uppsala University, Department of Medical Sciences, Cardiology and Uppsala Clinical Research Centre, Uppsala, Sweden
| | - E Hag
- Ryhov County Hospital, Department of Internal Medicine, Jonkoping, Sweden
| | - L Nilsson
- Linkoping University, Department of Health Medicine and Caring Sciences, Linkoping, Sweden
| | - A Schiopu
- Lund University, Department of Clinical Sciences, Malmo, Sweden
| | - M J Zaman
- James Paget Hospitals, Department of Cardiology, Norfolk, United Kingdom
| | - M Leosdottir
- Skane University Hospital, Department of Cardiology, Malmo, Sweden
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Claesson A, Krig A, Jonsson M, Ringh M, Svensson L, Forsberg S, Nord A, Nordberg P, Olausson M, Jacobsson A, Nilsson L, Hollenberg J. Incidence and characteristics of drowning in Sweden during a 15-year period. Resuscitation 2021; 162:11-19. [PMID: 33549688 DOI: 10.1016/j.resuscitation.2021.01.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 01/11/2021] [Accepted: 01/19/2021] [Indexed: 11/17/2022]
Abstract
AIM Drowning is a global health problem and deeper knowledge about the extent and causes is of utmost importance for implementing preventative actions. The aim of this study was to describe the incidence and characteristics of drowning in Sweden over time, including both non-fatal and fatal cases. METHODS All cases identified as drowning (ICD-10 coding) at a national level in Sweden between 2003-2017 were collected. Three sources of data from the Swedish National Board of Health and Welfare were extracted via the Cause of Death Register and the National Patient Register. RESULTS Over 15 years, a total of 6609 cases occurred, resulting in an annual incidence of 4.66 per 100 000. The median age was 49 years (IQR 23-67) and 67% were males. Non-fatal drownings represented 51% (n = 3363), with an overall non-fatal to fatal ratio of 1:1, this being 8:1 for children (0-17 years of age). Non-fatal cases were more often female (36% vs. 30%; p < 0.001), younger 30 (IQR 10-56) vs. 60 (IQR: 45-72) (p < 0.001) and of unintentional nature (81% vs. 55%; p < 0.001). The overall incidence decreased over time from 5.6 to 4.1 per 100 000 (p < 0.001). The highest rate of 30-day survival was found in females 0-17 years (94%, 95% CI 91.1-95.5) and the lowest in males >66 years (28.7%, 95% CI 26.2-31.2). Although the incidence in children 0-4 years increased from 7.4 to 8.1 per 100 000 (p < 0.001), they demonstrated the highest non-fatal to fatal ratio (13:1). CONCLUSION Drowning is declining but remains a consistent and underestimated public-health problem. Non-fatal drowning cases represent about half of the burden and characteristics differ from fatal drowning cases, being younger, more often female and of unintentional nature.
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Affiliation(s)
- A Claesson
- Department of Medicine, Centre for Resuscitation Science, Karolinska Institutet, Solna, Sweden.
| | - A Krig
- Department of Cardiology, Västerås Hospital, Västerås, Sweden
| | - M Jonsson
- Department of Medicine, Centre for Resuscitation Science, Karolinska Institutet, Solna, Sweden
| | - M Ringh
- Department of Medicine, Centre for Resuscitation Science, Karolinska Institutet, Solna, Sweden
| | - L Svensson
- Department of Medicine, Centre for Resuscitation Science, Karolinska Institutet, Solna, Sweden
| | - S Forsberg
- Department of Medicine, Centre for Resuscitation Science, Karolinska Institutet, Solna, Sweden
| | - A Nord
- Department of Medicine, Centre for Resuscitation Science, Karolinska Institutet, Solna, Sweden
| | - P Nordberg
- Department of Medicine, Centre for Resuscitation Science, Karolinska Institutet, Solna, Sweden
| | - M Olausson
- Swedish Lifesaving Society, Bromma, Sweden
| | | | - L Nilsson
- Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - J Hollenberg
- Department of Medicine, Centre for Resuscitation Science, Karolinska Institutet, Solna, Sweden
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Forsberg A, Abrahamsson TR, Nilsson L, Ernerudh J, Duchén K, Jenmalm MC. Changes in peripheral immune populations during pregnancy and modulation by probiotics and ω-3 fatty acids. Sci Rep 2020; 10:18723. [PMID: 33127947 PMCID: PMC7599237 DOI: 10.1038/s41598-020-75312-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 10/07/2020] [Indexed: 02/08/2023] Open
Abstract
Allergic diseases have become a major health problem, partly due to reduced microbial stimulation and a decreased dietary ω-3/ω-6 long-chain polyunsaturated fatty acid ratio. Prenatal exposures have been reported to influence allergy development, possibly induced via changes in maternal immune regulation. In a randomized double-blind placebo-controlled multicenter allergy prevention trial (PROOM-3), pregnant women were recruited at gestational week 20, and randomized to four study groups, one receiving both L. reuteri oil drops and ω-3 PUFA capsules (n = 22), the second receiving ω-3 PUFA supplementation and placebo regarding L. reuteri (n = 21), the third receiving L. reuteri and placebo regarding ω-3 PUFA (n = 22) and the fourth group receiving placebo capsules and placebo oil drops (n = 23). In this substudy, supplemental and pregnancy-related effects on maternal peripheral immune cell populations during pregnancy were assessed by flow cytometry immune phenotyping at gestational week 20, 32 and 4 days after delivery. The numbers of activated and regulatory T (Treg) cells (CD45RA− Foxp3++/CD45RA+Foxp3+) were reduced after delivery, with the lowest count in the L. reuteri supplemented group compared with the placebo group 4 days after delivery, while the ω-3 PUFA group did not differ from the placebo group. Several treatment-independent changes were observed during and after pregnancy in lymphocytes (CD4+/8+/19+/56+/45RA+/−), CD14+16+/− monocytes, and in subpopulations of T helper cells (Th) CD4+CD45RA−Tbet+ (Th1) and CD4+CD45RA−RORC+ (Th17) cells. In conclusion, probiotic supplementation to the mother during the second half of pregnancy resulted in immunomodulatory effects among activated and resting Treg cells. Furthermore, several systemic immune modifying effects of pregnancy were observed.
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Affiliation(s)
- A Forsberg
- Division of Neuro and Inflammation Sciences, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
| | - T R Abrahamsson
- Department of Paediatrics, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - L Nilsson
- Department of Clinical and Experimental Medicine, Allergy Centre, Linköping University, Linköping, Sweden
| | - J Ernerudh
- Department of Clinical Immunology and Transfusion Medicine, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - K Duchén
- Department of Paediatrics, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - M C Jenmalm
- Division of Neuro and Inflammation Sciences, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
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Rundquist S, Eriksson C, Nilsson L, Angelison L, Jäghult S, Björk J, Grip O, Hjortswang H, Strid H, Karlén P, Montgomery S, Halfvarson J. Clinical effectiveness of golimumab in Crohn's disease: an observational study based on the Swedish National Quality Registry for Inflammatory Bowel Disease (SWIBREG). Scand J Gastroenterol 2018; 53:1257-1263. [PMID: 30353751 DOI: 10.1080/00365521.2018.1519597] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE The effectiveness of golimumab in Crohn's disease (CD) is largely unknown as it is not approved for the treatment of the disease. We aimed to identify the population of CD patients treated with golimumab in Sweden, to assess the effectiveness of golimumab (defined as the drug retention rate), and to identify predictors of drug discontinuation. METHODS Patients with CD who received at least one injection of golimumab were identified through the Swedish National Quality Registry for Inflammatory Bowel Disease, which includes prospectively collected clinical information. Cox regression models were used to identify predictors of golimumab discontinuation. RESULTS The study cohort involved 94 patients of whom the majority (96.8%) had previously discontinued at least one anti-tumour necrosis factor (anti-TNF) agent. The drug retention rate at 12 weeks was 85.1%. Predictors of golimumab discontinuation at 12 weeks were previous surgery (adjusted HR = 7.52, 95% CI: 1.12-50.36), concomitant corticosteroid use at baseline (adjusted HR = 5.70, 95% CI: 1.13-28.68) and female sex (adjusted HR = 6.59; 95% CI: 1.04-41.62). The median duration of follow-up was 89 (IQR: 32-158) weeks. The drug retention at the most recent follow-up was 35.1%. Predictors of golimumab discontinuation at the most recent follow-up were corticosteroid use at baseline (adjusted HR = 2.60, 95% CI: 1.17-5.79) and female sex (adjusted HR = 2.24; 95% CI: 1.19-4.23). CONCLUSION Patients with CD treated with golimumab were a treatment-refractory group. Despite this, more than one-third of the patients appeared to have had clinical benefit after a median follow-up of more than 1.5 years.
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Affiliation(s)
- Sara Rundquist
- a Department of Gastroenterology, Faculty of Medicine and Health , Örebro University , Örebro , Sweden
| | - Carl Eriksson
- a Department of Gastroenterology, Faculty of Medicine and Health , Örebro University , Örebro , Sweden
| | - Linda Nilsson
- b Department of Internal Medicine , Danderyd Hospital , Stockholm , Sweden
| | - Leif Angelison
- c Department of Internal Medicine , Helsingborg Hospital , Helsingborg , Sweden
| | - Susanna Jäghult
- d Stockholm Gastro Center, Karolinska Institutet , Danderyd Hospital , Stockholm , Sweden
| | - Jan Björk
- e Department of Medicine, Center for Digestive Diseases , Karolinska University Hospital , Stockholm , Sweden
| | - Olof Grip
- f Department of Gastroenterology , Skåne University Hospital Malmö , Malmö , Sweden
| | - Henrik Hjortswang
- g Department of Gastroenterology , Linköping University , Linköping , Sweden
| | - Hans Strid
- h Department of Internal Medicine , Södra Älvsborgs Sjukhus , Borås , Sweden
| | - Per Karlén
- b Department of Internal Medicine , Danderyd Hospital , Stockholm , Sweden
| | - Scott Montgomery
- i Clinical Epidemiology and Biostatistics, School of Medical Sciences , Örebro University , Örebro , Sweden
- j Clinical Epidemiology Unit, Department of Medicine , Karolinska Institutet , Stockholm , Sweden
- k Department of Epidemiology and Public Health , University College London , London , UK
| | - Jonas Halfvarson
- a Department of Gastroenterology, Faculty of Medicine and Health , Örebro University , Örebro , Sweden
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Schlyter M, Ogmundsdottir Michelsen H, Sjolin I, Hag E, Hagstrom E, Nilsson L, Kiessling A, Henriksson P, Held C, Schiopu A, Zaman MJ, Leosdottir M. 410Treatment targets for systolic blood pressure are more often reached at cardiac rehabilitation centres where nurses adjust blood pressure medication doses - the Perfect-CR study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M Schlyter
- Malmo University, Department of Clinical Sciences and Department of Cardiology, Lund University and Skane University H, Malmo, Sweden
| | - H Ogmundsdottir Michelsen
- Lund University and Skane University Hospital, Department of Clinical Sciences Malmo and Department of Cardiology, Malmo, Sweden
| | - I Sjolin
- Lund University and Skane University Hospital, Department of Clinical Sciences Malmo and Department of Cardiology, Malmo, Sweden
| | - E Hag
- Department of Internal Medicine, County hospital Ryhov, Jönköping, Sweden, Jönköping, Sweden
| | - E Hagstrom
- Uppsala University, Department of Medical Sciences, Cardiology, and Uppsala Clinical Research Centre, Uppsala, Sweden
| | - L Nilsson
- Department of Medical and Health Sciences, Linköping University, Linköping, Sweden, Linköping, Sweden
| | - A Kiessling
- Department of Clinical Sciences Danderyd Hospital and the Karolinska Institute, Stockholm, Sweden, Stockholm, Sweden
| | - P Henriksson
- Department of Clinical Sciences Danderyd Hospital and the Karolinska Institute, Stockholm, Sweden, Stockholm, Sweden
| | - C Held
- Uppsala University, Department of Medical Sciences, Cardiology, and Uppsala Clinical Research Centre, Uppsala, Sweden
| | - A Schiopu
- Lund University and Skane University Hospital, Department of Clinical Sciences Malmo and Department of Cardiology, Malmo, Sweden
| | - M J Zaman
- James Paget University Hospital, Department of Cardiology, Norfolk, United Kingdom
| | - M Leosdottir
- Lund University and Skane University Hospital, Department of Clinical Sciences Malmo and Department of Cardiology, Malmo, Sweden
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Hofmann R, Tornvall P, Witt N, Alfredsson J, Svensson L, Jonasson L, Nilsson L. Supplemental oxygen therapy does not affect the systemic inflammatory response to acute myocardial infarction. J Intern Med 2018; 283:334-345. [PMID: 29226465 DOI: 10.1111/joim.12716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Oxygen therapy has been used routinely in normoxemic patients with suspected acute myocardial infarction (AMI) despite limited evidence supporting a beneficial effect. AMI is associated with a systemic inflammation. Here, we hypothesized that the inflammatory response to AMI is potentiated by oxygen therapy. METHODS The DETermination of the role of Oxygen in suspected Acute Myocardial Infarction (DETO2X-AMI) multicentre trial randomized patients with suspected AMI to receive oxygen at 6 L min-1 for 6-12 h or ambient air. For this prespecified subgroup analysis, we recruited patients with confirmed AMI from two sites for evaluation of inflammatory biomarkers at randomization and 5-7 h later. Ninety-two inflammatory biomarkers were analysed using proximity extension assay technology, to evaluate the effect of oxygen on the systemic inflammatory response to AMI. RESULTS Plasma from 144 AMI patients was analysed whereof 76 (53%) were randomized to oxygen and 68 (47%) to air. Eight biomarkers showed a significant increase, whereas 13 were decreased 5-7 h after randomization. The inflammatory response did not differ between the two treatment groups neither did plasma troponin T levels. After adjustment for increase in troponin T over time, age and sex, the release of inflammation-related biomarkers was still similar in the groups. CONCLUSIONS In a randomized controlled setting of normoxemic patients with AMI, the use of supplemental oxygen did not have any significant impact on the early release of systemic inflammatory markers.
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Affiliation(s)
- R Hofmann
- Department of Clinical Science and Education, Division of Cardiology, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden
| | - P Tornvall
- Department of Clinical Science and Education, Division of Cardiology, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden
| | - N Witt
- Department of Clinical Science and Education, Division of Cardiology, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden
| | - J Alfredsson
- Department of Cardiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - L Svensson
- Department of Medicine, Solna and Centre for Resuscitation Science, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden
| | - L Jonasson
- Department of Cardiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - L Nilsson
- Department of Cardiology, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
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Magnusson Å, Nilsson L, Oleröd G, Thurin-Kjellberg A, Bergh C. The addition of anti-Müllerian hormone in an algorithm for individualized hormone dosage did not improve the prediction of ovarian response-a randomized, controlled trial. Hum Reprod 2017; 32:811-819. [PMID: 28175316 DOI: 10.1093/humrep/dex012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 01/11/2017] [Indexed: 11/13/2022] Open
Abstract
Study question Does the addition of anti-Müllerian hormone (AMH) to a conventional dosage regimen, including age, antral follicle count (AFC) and BMI, improve the rate of targeted ovarian response, defined as 5-12 oocytes after IVF? Summary answer The addition of AMH did not alter the rate of targeted ovarian response, 5-12 oocytes, or decreased the rate of ovarian hyperstimulation syndrome (OHSS) or cancelled cycles due to poor ovarian response. What is known already Controlled ovarian hyperstimulation (COH) in connection with IVF is sometimes associated with poor ovarian response resulting in low pregnancy and live birth rates or leading to cycle cancellations, but also associated with excessive ovarian response, causing an increased risk of OHSS. Even though it is well-established that both AMH and AFC are strong predictors of ovarian response in IVF, few randomized trials have investigated their impact on achieving an optimal number of oocytes. Study design, size and duration Between January 2013 and May 2016, 308 patients starting their first IVF treatment were randomly assigned, using a computerized randomization program with concealed allocation of patients and in the proportions of 1:1, to one of two dosage algorithms for decisions on hormone starting dose, an algorithm, including AMH, AFC, age and BMI (intervention group), or an algorithm, including only AFC, age and BMI (control group). The study was blinded to patients and treating physicians. Participants/materials, setting, methods Women aged >18 and <40 years, with a BMI above 18.0 and below 35.0 kg/m2 starting their first IVF cycle where standard IVF was planned, were eligible. All patients were treated with a GnRH agonist protocol and recombinant FSH was used for stimulation. The study was performed as a single-centre study at a large IVF unit at a university hospital. Main results and the role of chance The rate of patients having the targeted number of oocytes retrieved was 81/152 (53.3%) in the intervention group versus 96/155 (61.9%) in the control group (P = 0.16, difference: -8.6, 95% CI: -20.3; 3.0). Cycles with poor response (<5 oocytes) were more frequent in the AMH group, 39/152 (25.7%) versus the non-AMH group, 17/155 (11.0%) (P < 0.01), while the number of cancelled cycles due to poor ovarian response did not differ 7/152 (4.6%) and 4/155 (2.6%) (P = 0.52). An excessive response (>12 oocytes) was seen in 32/152 (21.1%) and 42/155 (27.1%) patients, respectively (P = 0.27). Moderate or severe OHSS was observed among 5/152 (3.3%) and 6/155 (3.9%) patients, respectively (P = 1.0). Live birth rates were 48/152 (31.6%) and 42/155 (27.1%) per started cycle. Limitations, reasons for caution The categorization of AMH values in predicted low, normal and high responders was originally established using the Diagnostic Systems Laboratories assay and was translated to more recently released assays, lacking international standards and well-established reference intervals. The interpretation of AMH values between different assays should therefore be made with some caution. Wider implications of the findings An individualised dosage regimen including AMH compared with a non-AMH dosage regimen in an unselected patient population did not alter the number of women achieving the targeted number of oocytes, or the cancellation rate due to poor response or the occurrence of moderate/severe OHSS. However, this study cannot answer the question if using an algorithm for dose decision of FSH is superior to a standard dose and neither which ovarian reserve test is the most effective. Study funding/competing interest Financial support was received through Sahlgrenska University Hospital (ALFGBG-70 940) and unrestricted grants from Ferring Pharmaceuticals and the Hjalmar Svensson Research Foundation. None of the authors declares any conflict of interest. Trial registration The study was registered at www.clinicaltrials.gov NCT02013973. Trial registration date 6 December 2013. DATE OF FIRST PATIENT RANDOMIZED 14 January 2013.
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Affiliation(s)
- Å Magnusson
- Department of Obstetrics and Gynaecology, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Reproductive Medicine, Sahlgrenska University Hospital, SE Gothenburg, Sweden
| | - L Nilsson
- Department of Obstetrics and Gynaecology, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Reproductive Medicine, Sahlgrenska University Hospital, SE Gothenburg, Sweden
| | - G Oleröd
- Department of Clinical Chemistry, Sahlgrenska University Hospital, SE Gothenburg, Sweden
| | - A Thurin-Kjellberg
- Department of Obstetrics and Gynaecology, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Reproductive Medicine, Sahlgrenska University Hospital, SE Gothenburg, Sweden
| | - C Bergh
- Department of Obstetrics and Gynaecology, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Reproductive Medicine, Sahlgrenska University Hospital, SE Gothenburg, Sweden
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Ogmundsdottir Michelsen H, Hagstrom E, Sjolin I, Schlyter M, Kiessling A, Held C, Hag E, Nilsson L, Schiopu A, Zaman M, Leosdottir M. P4912Swedish cardiac rehabilitation programmes; a descriptive nationwide analysis - the perfect CR study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p4912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Karlsson L, Nilsson S, Charitakis E, Nilsson L, Janzon M. P3602Clinical decision support for stroke prevention in atrial fibrillation (CDS-AF): a cluster randomized trial in the primary care setting. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Schlyter M, Ogmundsottir Michelsen H, Sjolin I, Hag E, Hagstrom E, Nilsson L, Kiessling A, Held C, Schiopu A, Zaman M, Leosdottir M. P2499Myocardial infarction patients more often reach treatment goals for low-density lipoprotein at centres where cardiac rehabilitation nurses adjust statins - the Perfect-CR study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ogmundsdottir Michelsen H, Hagstrom E, Sjolin I, Schlyter M, Kiessling A, Held C, Hag E, Nilsson L, Schiopu A, Zaman M, Leosdottir M. P3429Correlations between components of cardiac rehabilitation and attaining risk factor goals after myocardial infarction - the Perfect-CR study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Abstract
UNLABELLED Effects of the chemotherapeutic agent etoposide on the skeleton were determined in mice. Numbers of bone marrow cells were reduced and myeloid cells were increased. Bone volume was significantly decreased with signs of inhibition of bone formation. Etoposide after pre-treatment with zoledronic acid still reduced bone but overall bone volume was higher than with etoposide alone. INTRODUCTION Chemotherapeutics target rapidly dividing tumor cells yet also impact hematopoietic and immune cells in an off target manner. A wide array of therapies have negative side effects on the skeleton rendering patients osteopenic and prone to fracture. This study focused on the pro-apoptotic chemotherapeutic agent etoposide and its short- and long-term treatment effects in the bone marrow and skeleton. METHODS Six- to 16-week-old mice were treated with etoposide (20-25 mg/kg) or vehicle control in short-term (daily for 5-9 days) or long-term (3×/week for 17 days or 6 weeks) regimens. Bone marrow cell populations and their phagocytic/efferocytic functions were analyzed by flow cytometry. Blood cell populations were assessed by CBC analysis. Bone volume and area compartments and osteoclast numbers were measured by microCT, histomorphometry, and TRAP staining. Biomarkers of bone formation (P1NP) and resorption (TRAcP5b) were assayed from serum. Gene expression in bone marrow was assessed using qPCR. RESULTS Flow cytometric analysis of the bone marrow revealed short-term etoposide reduced overall cell numbers and B220+ cells, with increased marrow apoptotic (AnnexinV+PI-) cells, mesenchymal stem-like cells, and CD68+, CD45+, and CD11b+ monocyte/myeloid cells (as a percent of the total marrow). After 6 weeks, the CD68+, Gr1+, CD11b+, and CD45+ cell populations were still relatively increased in etoposide-treated bone marrow. Skeletal phenotyping revealed etoposide decreased bone volume, trabecular thickness, and cortical bone volume. Gene expression in the marrow for the leptin receptor and CXCL12 were reduced with short-term etoposide, and an increased ratio of RANKL/OPG mRNA was observed. In whole bone, Runx2 and osteocalcin gene expressions were reduced, and in serum, P1NP was significantly reduced with etoposide. Treatment with the antiresorptive agent zoledronic acid prior to etoposide increased bone volume and improved the etoposide-induced decrease in skeletal parameters. CONCLUSIONS These data suggest that etoposide induces apoptosis in the bone marrow and significantly reduces parameters of bone formation with rapid reduction in bone volume. Pre-treatment with an antiresorptive agent results in a preservation of bone mass. Preventive approaches to preserving the skeleton should be considered in human clinical studies.
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Affiliation(s)
- A J Koh
- Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, 48109-1078, USA
| | - B P Sinder
- Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, 48109-1078, USA
| | - P Entezami
- Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, 48109-1078, USA
| | - L Nilsson
- Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, 48109-1078, USA
| | - L K McCauley
- Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, 48109-1078, USA.
- Department of Pathology, School of Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
- School of Dentistry, University of Michigan, 1011 N. University Ave., Ann Arbor, MI, 48109-1078, USA.
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Joly S, Voignier J, Grenier G, Drake DM, Nilsson L. Neutron Capture Cross Sections of Rhodium, Thulium, Iridium, and Gold Between 0.5 and 3.0 MeV. NUCL SCI ENG 2017. [DOI: 10.13182/nse79-a18926] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Joly
- Centre d’Etudes de Bruyères-le-Châtel, Service de Physique Nucléaire B.P. No. 561, 92120 Montrouge, France
| | - J. Voignier
- Centre d’Etudes de Bruyères-le-Châtel, Service de Physique Nucléaire B.P. No. 561, 92120 Montrouge, France
| | - G. Grenier
- Centre d’Etudes de Bruyères-le-Châtel, Service de Physique Nucléaire B.P. No. 561, 92120 Montrouge, France
| | - D. M. Drake
- Centre d’Etudes de Bruyères-le-Châtel, Service de Physique Nucléaire B.P. No. 561, 92120 Montrouge, France
| | - L. Nilsson
- Centre d’Etudes de Bruyères-le-Châtel, Service de Physique Nucléaire B.P. No. 561, 92120 Montrouge, France
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Affiliation(s)
- C. Nordborg
- Tandem Accelerator Laboratory, Uppsala, Sweden
| | - L. Nilsson
- Tandem Accelerator Laboratory, Uppsala, Sweden
| | - H. Condé
- National Defence Research Institute, Stockholm, Sweden
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Affiliation(s)
- L. Nilsson
- AB ASEA-ATOM, Box 53, S-72104 Västerås, Sweden
| | - M. Hannus
- Technical Research Centre of Finland Nuclear Engineering Laboratory Lönnrotinkatu 37, SF-00180 Helsinki 18, Finland
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Wahlgren CM, Blohmé L, Günther A, Nilsson L, Olsson C. Outcomes of Left Heart Bypass Versus Circulatory Arrest in Elective Open Surgical Descending and Thoraco-abdominal Aortic Repair. Eur J Vasc Endovasc Surg 2017; 53:672-678. [DOI: 10.1016/j.ejvs.2017.02.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 02/23/2017] [Indexed: 11/28/2022]
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Bender P, Bogart LK, Posth O, Szczerba W, Rogers SE, Castro A, Nilsson L, Zeng LJ, Sugunan A, Sommertune J, Fornara A, González-Alonso D, Barquín LF, Johansson C. Structural and magnetic properties of multi-core nanoparticles analysed using a generalised numerical inversion method. Sci Rep 2017; 7:45990. [PMID: 28397851 PMCID: PMC5387715 DOI: 10.1038/srep45990] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 03/06/2017] [Indexed: 12/15/2022] Open
Abstract
The structural and magnetic properties of magnetic multi-core particles were determined by numerical inversion of small angle scattering and isothermal magnetisation data. The investigated particles consist of iron oxide nanoparticle cores (9 nm) embedded in poly(styrene) spheres (160 nm). A thorough physical characterisation of the particles included transmission electron microscopy, X-ray diffraction and asymmetrical flow field-flow fractionation. Their structure was ultimately disclosed by an indirect Fourier transform of static light scattering, small angle X-ray scattering and small angle neutron scattering data of the colloidal dispersion. The extracted pair distance distribution functions clearly indicated that the cores were mostly accumulated in the outer surface layers of the poly(styrene) spheres. To investigate the magnetic properties, the isothermal magnetisation curves of the multi-core particles (immobilised and dispersed in water) were analysed. The study stands out by applying the same numerical approach to extract the apparent moment distributions of the particles as for the indirect Fourier transform. It could be shown that the main peak of the apparent moment distributions correlated to the expected intrinsic moment distribution of the cores. Additional peaks were observed which signaled deviations of the isothermal magnetisation behavior from the non-interacting case, indicating weak dipolar interactions.
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Affiliation(s)
- P. Bender
- Department CITIMAC, Faculty of Science, University of Cantabria, 39005 Santander, Spain
| | - L. K. Bogart
- Healthcare Biomagnetics Laboratory, University College London, 21 Albemarle Street, London, W1S 4BS, UK
| | - O. Posth
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, 10587 Berlin, Germany
| | - W. Szczerba
- Bundesanstalt für Materialforschung und –prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - S. E. Rogers
- ISIS-STFC Neutron Scattering Facility, Harwell Science and Innovation Campus, Didcot, OXON, OX11 0QX, UK
| | - A. Castro
- SOLVE Research and Consultancy AB, Lund, Sweden
| | - L. Nilsson
- SOLVE Research and Consultancy AB, Lund, Sweden
- Lund Centre for Field-Flow Fractionation, Department of Food Technology, Engineering and Nutrition, Lund University, Sweden
| | - L. J. Zeng
- Department of Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
| | - A. Sugunan
- SP Technical Research Institute of Sweden, Chemistry, Materials and Surfaces Unit, 11486 Stockholm, Sweden
| | - J. Sommertune
- SP Technical Research Institute of Sweden, Chemistry, Materials and Surfaces Unit, 11486 Stockholm, Sweden
| | - A. Fornara
- SP Technical Research Institute of Sweden, Chemistry, Materials and Surfaces Unit, 11486 Stockholm, Sweden
| | - D. González-Alonso
- Department CITIMAC, Faculty of Science, University of Cantabria, 39005 Santander, Spain
| | - L. Fernández Barquín
- Department CITIMAC, Faculty of Science, University of Cantabria, 39005 Santander, Spain
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Wetterskog E, Castro A, Zeng L, Petronis S, Heinke D, Olsson E, Nilsson L, Gehrke N, Svedlindh P. Size and property bimodality in magnetic nanoparticle dispersions: single domain particles vs. strongly coupled nanoclusters. Nanoscale 2017; 9:4227-4235. [PMID: 28290585 DOI: 10.1039/c7nr00023e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The widespread use of magnetic nanoparticles in the biotechnical sector puts new demands on fast and quantitative characterization techniques for nanoparticle dispersions. In this work, we report the use of asymmetric flow field-flow fractionation (AF4) and ferromagnetic resonance (FMR) to study the properties of a commercial magnetic nanoparticle dispersion. We demonstrate the effectiveness of both techniques when subjected to a dispersion with a bimodal size/magnetic property distribution: i.e., a small superparamagnetic fraction, and a larger blocked fraction of strongly coupled colloidal nanoclusters. We show that the oriented attachment of primary nanocrystals into colloidal nanoclusters drastically alters their static, dynamic, and magnetic resonance properties. Finally, we show how the FMR spectra are influenced by dynamical effects; agglomeration of the superparamagnetic fraction leads to reversible line-broadening; rotational alignment of the suspended nanoclusters results in shape-dependent resonance shifts. The AF4 and FMR measurements described herein are fast and simple, and therefore suitable for quality control procedures in commercial production of magnetic nanoparticles.
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Affiliation(s)
- E Wetterskog
- Solid State Physics, Department of Engineering Sciences, Ångström Laboratory, Uppsala University, Sweden.
| | - A Castro
- SOLVE Research and Consultancy AB, Lund, Sweden
| | - L Zeng
- Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
| | - S Petronis
- SP Chemistry, Materials and Surfaces, SP Technical Research Institute of Sweden, Borås, Sweden
| | - D Heinke
- nanoPET Pharma GmbH, Berlin, Germany
| | - E Olsson
- Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
| | - L Nilsson
- SOLVE Research and Consultancy AB, Lund, Sweden and Lund Centre for Field-Flow Fractionation, Department of Food Technology, Engineering and Nutrition, Lund University, Sweden
| | - N Gehrke
- nanoPET Pharma GmbH, Berlin, Germany
| | - P Svedlindh
- Solid State Physics, Department of Engineering Sciences, Ångström Laboratory, Uppsala University, Sweden.
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Lovegrove A, Edwards CH, De Noni I, Patel H, El SN, Grassby T, Zielke C, Ulmius M, Nilsson L, Butterworth PJ, Ellis PR, Shewry PR. Role of polysaccharides in food, digestion, and health. Crit Rev Food Sci Nutr 2017; 57:237-253. [PMID: 25921546 PMCID: PMC5152545 DOI: 10.1080/10408398.2014.939263] [Citation(s) in RCA: 294] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 06/24/2014] [Accepted: 06/24/2014] [Indexed: 12/19/2022]
Abstract
Polysaccharides derived from plant foods are major components of the human diet, with limited contributions of related components from fungal and algal sources. In particular, starch and other storage carbohydrates are the major sources of energy in all diets, while cell wall polysaccharides are the major components of dietary fiber. We review the role of these components in the human diet, including their structure and distribution, their modification during food processing and effects on functional properties, their behavior in the gastrointestinal tract, and their contribution to healthy diets.
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Affiliation(s)
- A. Lovegrove
- Department of Plant Biology and Crop Science, Rothamsted Research, Harpenden, Herts, United Kingdom
| | - C. H. Edwards
- King's College London, Diabetes and Nutritional Sciences Division, School of Agriculture, Policy and Development, London, United Kingdom
| | - I. De Noni
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - H. Patel
- King's College London, Diabetes and Nutritional Sciences Division, School of Agriculture, Policy and Development, London, United Kingdom
| | - S. N. El
- Food Engineering Department, Nutrition Section, Ege University, Izmir, Turkey
| | - T. Grassby
- King's College London, Diabetes and Nutritional Sciences Division, School of Agriculture, Policy and Development, London, United Kingdom
| | - C. Zielke
- Food Colloids Group, Department of Food Engineering, Technology and Nutrition, Faculty of Engineering LTH, Lund University, Lund, Sweden
| | - M. Ulmius
- Solve Research and Consultancy AB, Lund, Sweden
| | - L. Nilsson
- Food Colloids Group, Department of Food Engineering, Technology and Nutrition, Faculty of Engineering LTH, Lund University, Lund, Sweden
| | - P. J. Butterworth
- King's College London, Diabetes and Nutritional Sciences Division, School of Agriculture, Policy and Development, London, United Kingdom
| | - P. R Ellis
- King's College London, Diabetes and Nutritional Sciences Division, School of Agriculture, Policy and Development, London, United Kingdom
| | - P. R. Shewry
- Department of Plant Biology and Crop Science, Rothamsted Research, Harpenden, Herts, United Kingdom
- Department of Agriculture, Reading University, Whiteknights, Reading, Berkshire, United Kingdom
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Abstract
Objective: To study the effect of graduated compression on maternal and fetal haemodynamics. Design: Measurement of maternal and fetal heart rate and uterine artery flow velocity ( Vmax) in supine and standing positions with and without graduated compression hosiery (25 mmHg at the ankle). Setting: Department of Surgery, Lund University, S-22185 Lund, Sweden. Patients: Eighteen women in gestational week 32–38. Results: An increase in heart rate on standing was recorded for both mother and fetus. Graduated compression stockings decreased these changes. Cyclic heart rate changes were not frequent. Uterine artery flow velocity did not change during change of posture or after compression. Conclusion: The utero-vascular syndrome was not common in the patients studied. Graduated compression reduced the vascular response to standing, measured as an increase of heart frequency at standing.
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Affiliation(s)
- C. Austrell
- Department of Surgery, Lund University, Lund, Sweden
| | - L. Nilsson
- Department of Surgery, Lund University, Lund, Sweden
| | - L. Norgren
- Department of Surgery, Lund University, Lund, Sweden
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Bahlmann H, Hahn RG, Nilsson L. Agreement between Pleth Variability Index and oesophageal Doppler to predict fluid responsiveness. Acta Anaesthesiol Scand 2016; 60:183-92. [PMID: 26373826 DOI: 10.1111/aas.12632] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 08/15/2015] [Accepted: 08/20/2015] [Indexed: 12/19/2022]
Abstract
BACKGROUND Optimisation of stroke volume using oesophageal Doppler is an established technique to guide intraoperative fluid therapy. The method has practical limitations and therefore alternative indices of fluid responsiveness, such as ventilator-induced variation in the pulse oximetric signal (Pleth Variability Index (PVI)) could be considered. We hypothesised that both methods predict fluid responsiveness in a similar way. METHODS Seventy-five patients scheduled for open major abdominal surgery were randomised to fluid optimisation using fluid bolus algorithms based on either PVI (n = 35) or Doppler (n = 39). All patients were monitored with both methods; the non-guiding method was blind. Primary endpoint was the concordance between the methods to predict fluid responsiveness. We also analysed the ability of each method to predict a stroke volume increase ≥ 10% after a fluid bolus, as well as the accumulated intraoperative bolus fluid volume. RESULTS PVI indicated a need for fluid in one-third of the situations when Doppler did so, Cohen's kappa = 0.03. A fluid bolus indicated by the PVI algorithm increased stroke volume by ≥ 10% in half the situations. The same was found for the Doppler algorithm. The mean total bolus volume given was 878 ml when the fluid management was governed by PVI compared to 826 ml with Doppler (P = 0.71). CONCLUSION PVI- and Doppler-based stroke volume optimisations agreed poorly, which did not affect the amount of fluid administered. None of the algorithms showed a good ability to predict fluid responsiveness. Our results do not support the fluid responsiveness concept.
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Affiliation(s)
- H. Bahlmann
- Department of Anaesthesiology and Intensive Care; Linköping University; Linköping Sweden
- Department of Medical and Health Sciences; Linköping University; Linköping Sweden
| | - R. G. Hahn
- Research Unit; Södertälje Hospital; Södertälje Sweden
| | - L. Nilsson
- Department of Anaesthesiology and Intensive Care; Linköping University; Linköping Sweden
- Department of Medical and Health Sciences; Linköping University; Linköping Sweden
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Shaldon S, Beau MC, Deschodt G, Flavier JL, Nilsson L, Ramperez P, Mion C. Three years of experience with on-line preparation of sterile pyrogen-free infusate for haemofiltration. Contrib Nephrol 2015; 32:161-4. [PMID: 7128152 DOI: 10.1159/000406918] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Carlsson RM, von Segebaden K, Bergström J, Kling AM, Nilsson L. Surveillance of infant pertussis in Sweden 1998–2012; severity of disease in relation to the national vaccination programme. Euro Surveill 2015; 20. [DOI: 10.2807/1560-7917.es2015.20.6.21032] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Binary file ES_Abstracts_Final_ECDC.txt matches
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Affiliation(s)
- R M Carlsson
- The Public Health Agency of Sweden, Stockholm, Sweden
- Unit of Infection Control, Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | | | - J Bergström
- The Public Health Agency of Sweden, Stockholm, Sweden
| | - A M Kling
- The Public Health Agency of Sweden, Stockholm, Sweden
| | - L Nilsson
- The Public Health Agency of Sweden, Stockholm, Sweden
- Allergy Centre, Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
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Larsby B, Hällgren M, Nilsson L, McAllister A. The influence of female versus male speakers' voice on speech recognition thresholds in noise: Effects of low- and high-frequency hearing impairment. Speech, Language and Hearing 2014. [DOI: 10.1179/2050572814y.0000000053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Abstract
Abstract
The thermal expansion of the α and β phases of lithium sulphate has been studied using dilatometric and X-ray diffraction techniques. In the α-phase the coefficient of linear thermal expansion is 4.6·10-5 K-1 while in the β-phase the coefficient of linear thermal expansion increases from 0.9·10-5K-1 at room temperature up to 3.4·10-5 K-1 close to the first order phase transition at 575 °C. The volume expansion at the phase transition is 3.2%. In the α-phase the thermal Grüneisen parameter has been calculated to be 0.63 at 705 °C.
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Affiliation(s)
| | - L. Nilsson
- Chalmers University of Technology. Department of Physics
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32
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Tobiasson M, Dybedahl I, Holm MS, Karimi M, Brandefors L, Garelius H, Grövdal M, Högh-Dufva I, Grønbæk K, Jansson M, Marcher C, Nilsson L, Kittang AO, Porwit A, Saft L, Möllgård L, Hellström-Lindberg E. Limited clinical efficacy of azacitidine in transfusion-dependent, growth factor-resistant, low- and Int-1-risk MDS: Results from the nordic NMDSG08A phase II trial. Blood Cancer J 2014; 4:e189. [PMID: 24608733 PMCID: PMC3972706 DOI: 10.1038/bcj.2014.8] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 01/24/2014] [Accepted: 01/29/2014] [Indexed: 02/08/2023] Open
Abstract
This prospective phase II study evaluated the efficacy of azacitidine (Aza)+erythropoietin (Epo) in transfusion-dependent patients with lower-risk myelodysplastic syndrome (MDS). Patients ineligible for or refractory to full-dose Epo+granulocyte colony stimulation factors for >8 weeks and a transfusion need of 4 units over 8 weeks were included. Aza 75 mg m(-2) d(-1), 5/28 days, was given for six cycles; non-responding patients received another three cycles combined with Epo 60 000 units per week. Primary end point was transfusion independence (TI). All patients underwent targeted mutational screen for 42 candidate genes. Thirty enrolled patients received one cycle of Aza. Ten patients discontinued the study early, 7 due to adverse events including 2 deaths. Thirty-eight serious adverse events were reported, the most common being infection. Five patients achieved TI after six cycles and one after Aza+Epo, giving a total response rate of 20%. Mutational screening revealed a high frequency of recurrent mutations. Although no single mutation predicted for response, SF3A1 (n=3) and DNMT3A (n=4) were only observed in non-responders. We conclude that Aza can induce TI in severely anemic MDS patients, but efficacy is limited, toxicity substantial and most responses of short duration. This treatment cannot be generally recommended in lower-risk MDS. Mutational screening revealed a high frequency of mutations.
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Affiliation(s)
- M Tobiasson
- Division of Hematology, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - I Dybedahl
- Department of Hematology, Rikshospitalet, Oslo, Norway
| | - M S Holm
- Department of Hematology, Århus University Hospital, Århus, Denmark
| | - M Karimi
- Karolinska Institutet, Institution for Medicine, Stockholm, Sweden
| | - L Brandefors
- Department of Medicine, Sunderbyn Hospital, Luleå, Sweden
| | - H Garelius
- Department of Hematology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - M Grövdal
- Department of Medicine, SöDersjukhuset, Stockholm, Sweden
| | - I Högh-Dufva
- Department of Hematology, Herlev University Hospital, Copenhagen, Denmark
| | - K Grønbæk
- Department of Hematology, Rigshospitalet University Hospital, Copenhagen, Denmark
| | - M Jansson
- Karolinska Institutet, Institution for Medicine, Stockholm, Sweden
| | - C Marcher
- Department of Hematology, Odense University Hospital, Odense, Denmark
| | - L Nilsson
- Department of Hematology, Lund University Hospital, Lund, Sweden
| | - A O Kittang
- Department of Medicine and University of Bergen, K2 Clinical Institute 2, Haukeland University Hospital, Bergen, Norway
| | - A Porwit
- Division of Hematology, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - L Saft
- Division of Hematology, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - L Möllgård
- Division of Hematology, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - E Hellström-Lindberg
- Division of Hematology, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
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Carlsen I, Nilsson L, Frøkiaer J, Nørregaard R. Changes in phosphorylated heat-shock protein 27 in response to acute ureteral obstruction in rats. Acta Physiol (Oxf) 2013; 209:167-78. [PMID: 23834360 DOI: 10.1111/apha.12135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 09/18/2012] [Accepted: 06/05/2013] [Indexed: 12/19/2022]
Abstract
AIM In vivo, renal medullary interstitial cells (RMICs) and collecting duct principal cells (mpkCCD cells) are subjected to inflammatory, oxidative and mechanical stress as a result of unilateral ureteral obstruction (UUO). Because heat-shock protein (HSP) 27 and HSP70 are induced by cellular stresses and play a role in cytoprotection, we hypothesized that HSP27 and HSP70 are increased in rats subjected to acute UUO and in RMICs and mpkCCD cells exposed to inflammatory, oxidative or mechanical stress. METHODS Rats were subjected to acute UUO for 6 h and 12 h. To examine the expression of HSP27, phosphorylated HSP27 (pHSP27) and HSP70 in response to inflammatory, oxidative and mechanical stress in vitro, we exposed RMICs and mpkCCD cells to interleukin 1β (IL-1β), hydrogen peroxide (H2 O2 ), and stretch stimulation over time. RESULTS The phosphorylated form of HSP27 (pHSP27) was increased in the renal inner medulla (IM) after 6-h and 12-h UUO, while HSP27 and HSP70 were unchanged. Furthermore, after 6 h and 12 h of UUO, the expression of inflammatory (IL-1β) and oxidative [haem oxygenase 1 (HO-1)] markers was induced. Exposure to inflammatory, oxidative and mechanical stress changed HSP27 and pHSP27 expression in RMICs but not in mpkCCD cells, while HSP70 was not affected by any of the stress conditions. Exposure of RMICs to oxidative and mechanical stress induced HSP27 phosphorylation via a p38-dependent mechanism. CONCLUSION These data demonstrate that, in response to acute UUO, different forms of cellular stresses modulate HSP27 expression and phosphorylation in RMICs. This may affect the ability of renal cells to mount an effective cytoprotective response.
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Affiliation(s)
- I Carlsen
- The Water and Salt Research Center, Aarhus University, Aarhus, Denmark; Institute of Clinical Medicine, Aarhus University Hospital-Skejby, Aarhus, Denmark
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Schmidt J, Weijdegard B, Mikkelsen AL, Lindenberg S, Nilsson L, Brannstrom M. Differential expression of inflammation-related genes in the ovarian stroma and granulosa cells of PCOS women. Mol Hum Reprod 2013; 20:49-58. [DOI: 10.1093/molehr/gat051] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tejeda L, Dębiec M, Nilsson L, Peñarrieta JM, Alvarado JA. Chemical composition, antioxidant capacity and content of phenolic compounds in meals collected in hospitals in Bolivia and Sweden. NUTR HOSP 2012; 27:1009-16. [PMID: 23165536 DOI: 10.3305/nh.2012.27.4.5849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 03/27/2012] [Indexed: 12/01/2022] Open
Abstract
The objective of this study was to evaluate the proximal composition, as well as Total Antioxidant Capacity (TAC) and Total Phenols (TPH) in meals that represent a complex food matrix, from different hospitals in Bolivia and Sweden. Protein, fat, ash, dietary fiber and carbohydrate contents were measured in 29 samples: 20 from two Bolivian hospitals and 9 from the university hospital in Lund, Sweden. The antioxidant capacity was measured by three spectrophotometric methods: the ferric reducing antioxidant power (FRAP) method, the 2, 2'- azinobis-3-ethylbenzotiazoline-6-sulfonic acid (ABTS) method and Total Phenolic Compounds (TPH) using the Folin-Ciocalteu reagent. The results show that fat, protein, carbohydrate and dietary fiber in Bolivian and Swedish hospital meals are following internationally established recommendations. Regarding the main courses, TPH contents in both countries were in the same range. However, TAC and dietary fiber content were higher in Swedish meals than in Bolivian meals and the TAC was far lower, in both cases, in comparison with the value obtained from individual food items reported from literature. The results show that antioxidant levels can be easily overestimated by considering only individual uncooked ingredients. An interesting consideration is, the fiber content in the meals, which can be an important source of antioxidants and non-extractable phenolic compounds.
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Affiliation(s)
- L Tejeda
- School of Chemistry, San Andrés University, La Paz, Bolivia.
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Nilsson L, Pihl A, Tågsjö M, Ericsson E. Adverse events are common on the intensive care unit: results from a structured record review. Acta Anaesthesiol Scand 2012; 56:959-65. [PMID: 22571769 DOI: 10.1111/j.1399-6576.2012.02711.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2012] [Indexed: 01/04/2023]
Abstract
BACKGROUND Intensive care is advanced and highly technical, and it is essential that, despite this, patient care remains safe and of high quality. Adverse events (AEs) are supposed to be reported to internal quality control systems by health-care providers, but many are never reported. Patients on the intensive care unit (ICU) are at special risk for AEs. Our aim was to identify the incidence and characteristics of AEs in patients who died on the ICU during a 2-year period. METHODS A structured record review according to the Global Trigger Tool (GTT) was used to review charts from patients cared for at the ICU of a middle-sized Swedish hospital during 2007 and 2008 and who died during or immediately after ICU care. All identified AEs were scored according to severity and preventability. RESULTS We reviewed 128 records, and 41 different AEs were identified in 25 patients (19.5%). Health care-associated infections, hypoglycaemia, pressure sores and procedural complications were the most common harmful events. Twenty two (54%) of the AEs were classified as being avoidable. Two of the 41 AEs were reported as complications according to the Swedish Intensive Care Registry, and one AE had been reported in the internal AE-reporting system. CONCLUSION Almost one fifth of the patients who died on the ICU were subjected to harmful events. GTT has the advantage of identifying more patient injuries caused by AEs than the traditional AE-reporting systems used on many ICUs.
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Affiliation(s)
- L Nilsson
- Division of Drug Research, Anesthesiology and Intensive Care, Department of Medical and Health Sciences, Linköping University, Sweden.
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Kjølhede P, Borendal Wodlin N, Nilsson L, Fredrikson M, Wijma K. Impact of stress coping capacity on recovery from abdominal hysterectomy in a fast-track programme: a prospective longitudinal study. BJOG 2012; 119:998-1006; discussion 1006-7. [DOI: 10.1111/j.1471-0528.2012.03342.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ivanov AE, Solodukhina NM, Nilsson L, Nikitin MP, Nikitin PI, Zubov VP, Vikhrov AA. Binding of mucin to water-soluble and surface-grafted boronate-containing polymers. Polym Sci Ser A 2012. [DOI: 10.1134/s0965545x12010026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Nilsson L, Winkvist A, Hallmans G, Johansson I, Lindahl B, Lenner P, Van Guelpen B. 3510 POSTER Low-carbohydrate, High-protein Score and Cancer Incidence and Mortality in a Northern Swedish Population. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71166-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Uyar A, Kurkcuoglu O, Nilsson L, Doruker P. The elastic network model reveals a consistent picture on intrinsic functional dynamics of type II restriction endonucleases. Phys Biol 2011; 8:056001. [PMID: 21791727 DOI: 10.1088/1478-3975/8/5/056001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The vibrational dynamics of various type II restriction endonucleases, in complex with cognate/non-cognate DNA and in the apo form, are investigated with the elastic network model in order to reveal common functional mechanisms in this enzyme family. Scissor-like and tong-like motions observed in the slowest modes of all enzymes and their complexes point to common DNA recognition and cleavage mechanisms. Normal mode analysis further points out that the scissor-like motion has an important role in differentiating between cognate and non-cognate sequences at the recognition site, thus implying its catalytic relevance. Flexible regions observed around the DNA-binding site of the enzyme usually concentrate on the highly conserved β-strands, especially after DNA binding. These β-strands may have a structurally stabilizing role in functional dynamics for target site recognition and cleavage. In addition, hot spot residues based on high-frequency modes reveal possible communication pathways between the two distant cleavage sites in the enzyme family. Some of these hot spots also exist on the shortest path between the catalytic sites and are highly conserved.
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Affiliation(s)
- A Uyar
- Department of Chemical Engineering and Polymer Research Center, Bogazici University, 34342 Bebek, Istanbul, Turkey
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González-Acuña D, Corvalan F, Barrientos C, Doussang D, Mathieu C, Nilsson L, Casanueva ME, Palma RL. Community structure of lice (Insecta: Phthiraptera) from two sympatric gull species: kelp gull (Larus dominicanus) and Franklin's gull (Larus pipixcan) in Talcahuano, Chile. Neotrop Entomol 2011; 40:300-304. [PMID: 21710024 DOI: 10.1590/s1519-566x2011000300002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 07/31/2010] [Indexed: 05/31/2023]
Abstract
A total of 1,177 lice of four species were collected from 124 kelp gulls (Larus dominicanus) and 137 lice of the same four species from 60 Franklin's gulls (Larus pipixcan). The louse Saemundssonia lari (O Fabricius) (Phthiraptera: Philopteridae) was the most numerous on both gull species, with infestation rates of 4.9 on kelp gulls and 1.8 on Franklin's gulls. The second most abundant louse was Quadraceps punctatus (Burmeister), with a high infestation rate but low prevalence on kelp gulls; those parameters were much lower among lice from Franklin's gulls. The composition and community structure of the lice were similar on both host species, but not their infestation rates. In addition, the feather mite Zachvatkinia larica Mironov (Acari: Avenzoariidae) is recorded from kelp gulls and Franklin's gulls for the first time, while the gamasid mite Larinyssus sp. is recorded from kelp gulls, also for the first time. The population parameters of all species of ectoparasites are discussed.
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Affiliation(s)
- D González-Acuña
- Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile.
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Chowdhury O, Woll P, Leonard J, Anderson K, Mizukami T, Mead A, Hellstrom-Lindberg E, Nilsson L, Callaghan R, Jacobsen S. 380 Characterisation and targeting of malignant stem cells in myelodysplastic syndromes. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70382-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tippawan U, Pomp S, Blomgren J, Dangtip S, Gustavsson C, Klug J, Nadel-Turonski P, Österlund M, Nilsson L, Olsson N, Jonsson O, Prokofiev A, Corcalciuc V, Koning A, Watanabe Y. Double-differential cross sections and kerma coefficients for light-charged particles produced by 96 MeV neutrons on carbon. RADIAT MEAS 2010. [DOI: 10.1016/j.radmeas.2010.06.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Borendal Wodlin N, Nilsson L, Kjølhede P. The impact of mode of anaesthesia on postoperative recovery from fast-track abdominal hysterectomy: a randomised clinical trial. BJOG 2010; 118:299-308. [DOI: 10.1111/j.1471-0528.2010.02697.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ortqvist Å, Blennow M, Carlsson RM, Hanson LÅ, Lindberg A, Lindqvist L, Magnusson M, Nilsson L, Norlund A, Nyrén O, Olcén P, Olin P, Silfverdal SA, Säwe J, Söderström A, Trollfors B. Vaccination of children--a systematic review. Acta Paediatr 2010; 99:1-192. [PMID: 20712829 DOI: 10.1111/j.1651-2227.2010.01823.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Å Ortqvist
- .Department of Communicable Diseases Control and Prevention, Stockholm County Council, Stockholm, Sweden
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Abdgawad M, Gunnarsson L, Bengtsson AA, Geborek P, Nilsson L, Segelmark M, Hellmark T. Elevated neutrophil membrane expression of proteinase 3 is dependent upon CD177 expression. Clin Exp Immunol 2010; 161:89-97. [PMID: 20491791 DOI: 10.1111/j.1365-2249.2010.04154.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Proteinase 3 (PR3) is a major autoantigen in anti-neutrophil cytoplasmic antibodies (ANCA)-associated systemic vasculitis (AASV), and the proportion of neutrophils expressing PR3 on their membrane (mPR3+) is increased in AASV. We have shown recently that mPR3 and CD177 are expressed on the same cells in healthy individuals. In this study we try to elucidate mechanisms behind the increased mPR3 expression in AASV and its relationship to CD177. All neutrophils in all individuals were either double-positive or double-negative for mPR3 and CD177. The proportion of double-positive neutrophils was increased significantly in AASV and systemic lupus erythematosus patients. The proportion of mPR3+/CD177+ cells was not correlated to general inflammation, renal function, age, sex, drug treatment and levels of circulating PR3. AASV patients had normal levels of granulocyte colony-stimulating factor and granulocyte-macrophage colony-stimulating factor. Pro-PR3 was found to constitute 10% of circulating PR3 but none of the mPR3. We found increased mRNA levels of both PR3 and CD177 in AASV, but they did not correlate with the proportion of double-positive cells. In cells sorted based on membrane expression, CD177-mRNA was several-fold higher in mPR3+ cells. When exogenous PR3 was added to CD177-transfected U937 cells, only CD177+ cells bound PR3 to their membrane. In conclusion, the increased membrane expression of PR3 found in AASV is not linked directly to circulating PR3 or PR3 gene transcription, but is dependent upon CD177 expression and correlated with the transcription of the CD177 gene.
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Affiliation(s)
- M Abdgawad
- Department of Nephrology, Lund University, Lund, Sweden.
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Genuneit J, Cantelmo JL, Weinmayr G, Wong GWK, Cooper PJ, Riikjärv MA, Gotua M, Kabesch M, von Mutius E, Forastiere F, Crane J, Nystad W, El-Sharif N, Batlles-Garrido J, García-Marcos L, García-Hernández G, Morales-Suarez-Varela M, Nilsson L, Bråbäck L, Saraçlar Y, Weiland SK, Cookson WOC, Strachan D, Moffatt MF. A multi-centre study of candidate genes for wheeze and allergy: the International Study of Asthma and Allergies in Childhood Phase 2. Clin Exp Allergy 2010; 39:1875-88. [PMID: 20085599 DOI: 10.1111/j.1365-2222.2009.03364.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND Common polymorphisms have been identified in genes suspected to play a role in asthma. We investigated their associations with wheeze and allergy in a case-control sample from Phase 2 of the International Study of Asthma and Allergies in Childhood. METHODS We compared 1105 wheezing and 3137 non-wheezing children aged 8-12 years from 17 study centres in 13 countries. Genotyping of 55 candidate single nucleotide polymorphisms (SNPs) in 14 genes was performed using the Sequenom System. Logistic regression models were fitted separately for each centre and each SNP. A combined per allele odds ratio and measures of heterogeneity between centres were derived by random effects meta-analysis. RESULTS Significant associations with wheeze in the past year were detected in only four genes (IL4R, TLR4, MS4A2, TLR9, P<0.05), with per allele odds ratios generally <1.3. Variants in IL4R and TLR4 were also related to allergen-specific IgE, while polymorphisms in FCER1B (MS4A2) and TLR9 were not. There were also highly significant associations (P<0.001) between SPINK5 variants and visible eczema (but not IgE levels) and between IL13 variants and total IgE. Heterogeneity of effects across centres was rare, despite differences in allele frequencies. CONCLUSIONS Despite the biological plausibility of IgE-related mechanisms in asthma, very few of the tested candidates showed evidence of association with both wheeze and increased IgE levels. We were unable to confirm associations of the positional candidates DPP10 and PHF11 with wheeze, although our study had ample power to detect the expected associations of IL13 variants with IgE and SPINK5 variants with eczema.
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Affiliation(s)
- J Genuneit
- Institute of Epidemiology, Ulm University, Ulm, Germany.
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Nilsson L, Lindberget O, Gupta A, Vegfors M. Implementing a pre-operative checklist to increase patient safety: a 1-year follow-up of personnel attitudes. Acta Anaesthesiol Scand 2010; 54:176-82. [PMID: 19719811 DOI: 10.1111/j.1399-6576.2009.02109.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND The operating room is a complex work environment with a high potential for adverse events. Protocols for perioperative verification processes have increasingly been recommended by professional organizations during the last few years. We assessed personnel attitudes to a pre-operative checklist ('time out') immediately before start of the operative procedure. METHODS 'Time out' was implemented in December 2007 as an additional safety barrier in two Swedish hospitals. One year later, in order to assess how the checklist was perceived, a questionnaire was sent by e-mail to 704 persons in the operating departments, including surgeons, anesthesiologists, operation and anesthetic nurses and nurse assistants. In order to identify differences in response between professions, each alternative in the questionnaire was assigned a numerical value. RESULTS The questionnaire was answered by 331 (47%) persons and 93% responded that 'time out' contributes to increased patient safety. Eighty-six percent thought that 'time out' gave an opportunity to identify and solve problems. Confirmation of patient identity, correct procedure, correct side and checking of allergies or contagious diseases were considered 'very important' by 78-84% of the responders. Attitudes to checking of patient positioning, allergies and review of potential critical moments were positive but differed significantly between the professions. Attitudes to a similar checklist at the end of surgery were positive and 72-99% agreed to the different elements. CONCLUSION Staff attitudes toward a surgical checklist were mostly positive 1 year after their introduction in two large hospitals in central Sweden.
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Affiliation(s)
- L Nilsson
- Department of Anesthesiology and Intensive Care, University Hospital, Linköping, Sweden.
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Jedel E, Waern M, Gustafson D, Landén M, Eriksson E, Holm G, Nilsson L, Lind AK, Janson PO, Stener-Victorin E. Anxiety and depression symptoms in women with polycystic ovary syndrome compared with controls matched for body mass index. Hum Reprod 2009; 25:450-6. [PMID: 19933236 DOI: 10.1093/humrep/dep384] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Anxiety and depression are more prevalent in women with polycystic ovary syndrome (PCOS) than in those without this disorder. Possible confounding effects of overweight and obesity are suggested. The aim was to compare symptoms of anxiety and depression in women with PCOS and controls matched for age, body weight and body mass index (BMI). METHODS Women with PCOS (n = 30) and controls (n = 30) were recruited from the community. Persons with ongoing psychotropic medication were excluded. All potential participants underwent gynecological examination to confirm case-control status. Participants completed the self-reported versions of the Brief Scale for Anxiety (BSA-S) and Montgomery Asberg Depression Rating Scale (MADRS-S). RESULTS Women with PCOS had a higher BSA-S score compared with controls (median, range: 10.5, 1-24 versus 5.0, 0-28, P < 0.001). They scored higher on the following four individual symptoms: reduced sleep (2.0, 0-5 versus 0, 0-2, P < 0.001), worry (1.5, 0-4 versus 0, 0-6, P = 0.004), phobias (1, 0-4 versus 0, 0-3, P < 0.001), and pain (1, 0-3 versus 0, 0-2, P < 0.001). No statistical difference was demonstrated regarding MADRS-S scores (10.0, 0-27 versus 5.5, 0-24, P = 0.053). Only one of the nine MADRS-S symptoms, reduced sleep, which is also included in the BSA-S, differed between cases and controls. CONCLUSIONS Several anxiety symptoms distinguished women with PCOS from a control group matched on BMI. A better understanding of the symptoms is needed to identify and alleviate anxiety symptoms in this vulnerable group.
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Affiliation(s)
- E Jedel
- Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden
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VAN Giezen JJJ, Nilsson L, Berntsson P, Wissing BM, Giordanetto F, Tomlinson W, Greasley PJ. Ticagrelor binds to human P2Y(12) independently from ADP but antagonizes ADP-induced receptor signaling and platelet aggregation. J Thromb Haemost 2009; 7:1556-65. [PMID: 19552634 DOI: 10.1111/j.1538-7836.2009.03527.x] [Citation(s) in RCA: 210] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND P2Y(12) plays an important role in regulating platelet aggregation and function. This receptor is the primary target of thienopyridine antiplatelet agents, the active metabolites of which bind irreversibly to the receptor, and of newer agents that can directly and reversibly modulate receptor activity. OBJECTIVE To characterize the receptor biology of the first reversibly binding oral P2Y(12) antagonist, ticagrelor (AZD6140), a member of the new cyclopentyltriazolopyrimidine (CPTP) class currently in phase III development. METHODS Ticagrelor displayed apparent non-competitive or insurmountable antagonism of ADP-induced aggregation in human washed platelets. This was investigated using competition binding against [(3)H]ADP, [(33)P]2MeS-ADP and the investigational CPTP compound [(125)I]AZ11931285 at recombinant human P2Y(12). Functional receptor inhibition studies were performed using a GTPgammaS-binding assay, and further binding studies were performed using membranes prepared from washed human platelets. RESULTS Radioligand-binding studies demonstrated that ticagrelor binds potently and reversibly to human P2Y(12) with K(on) and K(off) of (1.1 +/- 0.2) x 10(-4) nm(-1) s(-1) and (8.7 +/- 1.4) x 10(-4) s(-1), respectively. Ticagrelor does not displace [(3)H]ADP from the receptor (K(i) > 10 mum) but binds competitively with [(33)P]2MeS-ADP (K(i) = 4.3 +/- 1.3 nm) and [(125)I]AZ11931285 (K(i) = 0.33 +/- 0.04 nm), and shows apparent non-competitive inhibition of ADP-induced signaling but competitive inhibition of 2MeS-ADP-induced signaling. Binding studies on membranes prepared from human washed platelets demonstrated similar non-competitive binding for ADP and ticagrelor. CONCLUSIONS These data indicate that P2Y(12) is targeted by ticagrelor via a mechanism that is non-competitive with ADP, suggesting the existence of an independent receptor-binding site for CPTPs.
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Affiliation(s)
- J J J VAN Giezen
- Department of BioScience, AstraZeneca R&D Mölndal, Mölndal, Sweden.
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