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Persson A, Troein M, Lundin S, Midlöv P, Lenander C. Exploring pharmacists' perspectives about substandard and falsified medical products through interviews. Explor Res Clin Soc Pharm 2024; 13:100421. [PMID: 38405083 PMCID: PMC10885592 DOI: 10.1016/j.rcsop.2024.100421] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 05/10/2023] [Revised: 12/28/2023] [Accepted: 02/08/2024] [Indexed: 02/27/2024] Open
Abstract
Background The problem with substandard and falsified (SF) medical products may grow in high-income countries when e-commerce of medicines increases. Unauthorized websites offer medicines of insufficient quality. This underscores the importance of evaluating how the problem with SF medical products can be prevented from escalating. However, little is known about what knowledge and experience professionals working primarily with medicines have about the phenomenon. Objective This study was conducted to explore purposively selected pharmacists' experience and knowledge about SF medical products. Methods Twelve individual interviews were conducted with purposively selected pharmacists between May 2021 and September 2021. An interview guide was used with specific questions about e-commerce, which focused on exploring pharmacists' experience and knowledge about SF medical products. The interviews lasted, on average, 49 min and were analyzed using inductive qualitative content analysis. Results A main theme 'Pharmacists as guardians of safe medicines' emerged. This theme consisted of three categories pinpointing 'risk factors', 'protective factors', and 'opportunities for improvement' regarding SF medical products. Findings suggest that pharmacists can play a role in preventing the problem with SF medical products from escalating. Participants emphasized they were in this line of work to help patients and increase patient safety. Conclusions Pharmacists have the opportunity to empower the public with knowledge about SF medical products since they discuss medicines with many people every day. Awareness of risk factors for SF medical products enables pharmacists to guide patients to avoid risky purchases from unauthorized websites. To do this, better communication, and cooperation with patients and other healthcare professionals are needed.
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Affiliation(s)
- A. Persson
- Center for Primary Health Care Research, Department of Clinical Sciences Malmö, Lund University, Box 50332, SE-20213 Malmö, Sweden
| | - M. Troein
- Center for Primary Health Care Research, Department of Clinical Sciences Malmö, Lund University, Box 50332, SE-20213 Malmö, Sweden
| | - S. Lundin
- Department of Arts and Cultural Sciences, Lund University, LUX, Helgonavägen 3, SE-22100 Lund, Sweden
| | - P. Midlöv
- Center for Primary Health Care Research, Department of Clinical Sciences Malmö, Lund University, Box 50332, SE-20213 Malmö, Sweden
| | - C. Lenander
- Center for Primary Health Care Research, Department of Clinical Sciences Malmö, Lund University, Box 50332, SE-20213 Malmö, Sweden
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Economou Lundeberg J, Engstrom G, Dziubinski M, Sridar A, Healey JS, Bhavnani S, Persson A, Johnson L. A prediction model for ventricular tachycardia events using 24h ambulatory ECG. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.405] [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
Ventricular tachycardia (VT) is a potentially lethal condition that occurs intermittently. The aim of this study was to derive a risk prediction model for VT episodes detected on ≤30 day mobile cardiac telemetry using a 24 hour ambulatory ECG recording.
Methods
We included patients who were monitored for 2–30 full days in the USA using a full-disclosure mobile cardiac telemetry device in 2017. Patients with a VT episode ≥10 beats duration (VT≥10 beats) on the first full recording day were excluded. Arrhythmias were algorithmically detected and manually verified. A LASSO model was derived for the outcome of a VT≥10 beats detected on days 2–30. Potential predictors included age, sex, and ECG data from the first 24h: heart rate (max, min and mean), premature atrial and ventricular complexes occurring as singles, couplets, triplets, and runs ≥4 beats as well as the fastest rate for each event. The population was split into equal random training and testing samples.
Results
In a population of 19,789 patients (mean age 65.3, 43.4% men), and during a median recording time of 18 days there were 1,511 patients with at least one VT≥10 beats. The LASSO model had good discrimination in the testing sample, ROC-statistic 0.7586, 95% CI 0.7398–0.7774 (Figure 1a). A model excluding age and gender had similar discrimination (ROC 0.7528, 95% CI 0.7339–0.7717). In the testing sample the model was well calibrated (Figure 1b). In the top quintile more than one in five patients had a VT≥10 beats, enough to warrant extended monitoring.
Conclusion
A risk score based on variables easily derived from a standard 24h ECG can be used to predict high risk of VT episodes ≥10 beats within 30 days. In the top quintile VT events ≥10 beats were ten times more common than in the bottom quintile.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): Hjärt-LungfondenSwedish Society for Medical Research
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Affiliation(s)
| | - G Engstrom
- Lund University, Department of Clinical Sciences , Lund , Sweden
| | | | - A Sridar
- Washington D.C. Va Medical Center, Washington , DC , United States of America
| | | | - S Bhavnani
- Scripps Clinic , San Diego , United States of America
| | - A Persson
- Lund University, Department of Clinical Sciences , Lund , Sweden
| | - L Johnson
- Lund University, Department of Clinical Sciences , Lund , Sweden
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Persson A, Ecounomou Lundeberg JEL, Dziubinski MD, Slusarczyk MS, Grotek AG, Johnson LJ, Engstrom GE. Heart rate during sinus rhythm predicts paroxysmal atrial fibrillation on 30-day mobile cardiac telemetry monitoring. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.381] [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
Low mean heart rate at ambulatory ECG monitoring and low resting heart rate are both predictors of later incident atrial fibrillation (AF). The aim of this study is to determine whether mean heart rate at ambulatory ECG is a predictor of paroxysmal AF that can be detected with extended ambulatory ECG registration.
Methods
We included all patients who recorded 2–30 full days of ambulatory ECG using a full disclosure mobile cardiac telemetry device in USA 2019–2020, and without AF on the first full day of registration (n=18,220, mean age 64.4 years, 57.2% women). The association between mean heart rate on the first day and the occurrence of paroxysmal AF (≥30 seconds duration) during subsequent up to 30 day ECG recording was analysed using logistic regression models adjusted for age, sex and duration of ECG recording, according to tertiles of mean heart rate (39–66, 67–76 and >77 beats per minute) as well as modelled using restricted cubic splines.
Results
During a median registration duration of 16 days there were 1,290 cases of paroxysmal AF (7.1%). More paroxysmal AF occurred in the lower tertiles of mean heart rate (11.2% in tertile 1, 6.2% in tertile 2, and 4.4% in tertile 3). After adjustment, low mean heart rate was associated with a higher risk of AF (OR 1.69, 95% CI 1.47–1.93 p<0.001 for tertile 1 vs tertile 2, and OR 1.84, 95% CI 1.58–2.15, p<0.001 for tertile 1 vs tertile 3). Cubic spline curves indicated that lowest risks of AF were seen among subjects with a mean heart rate ≈80 beats per minute.
Conclusion
Low mean heart rate at 24hECG predicts detection of paroxysmal AF during extended ≤30 day ambulatory ECG monitoring.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): Swedish Heart Lung foundationSwedish Society for Medical Research
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Persson A, Troein M, Lundin S, Midlöv P, Lenander C. Swedish community pharmacy employees' knowledge and experience of substandard and falsified medical products: a cross-sectional descriptive survey. Int J Pharm Pract 2022; 30:414-419. [PMID: 35849136 DOI: 10.1093/ijpp/riac059] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 02/17/2022] [Accepted: 06/28/2022] [Indexed: 11/12/2022]
Abstract
OBJECTIVES Substandard and falsified medical products are, according to the World Health Organization, a global threat to public health. To evaluate if community pharmacy employees can guide the public to safer medication purchases, their knowledge and experience about SF medical products was examined. METHODS A digital questionnaire was distributed to the five dominating pharmacy companies in Sweden, representing 97% of the community pharmacies (1391/1433), giving the theoretical possibility of reaching 6200 employees. Three companies published a link to the questionnaire on their intranets, one distributed the link via e-mail to the responsible pharmacist for quality and knowledge, respectively. The fifth company did not pass on, due to technical problems. Employees aged 18 years or older with customer contact were invited to participate. KEY FINDINGS The questionnaire was available for 74% of all community pharmacies (1067/1433), having approximately 4900 employees with customer contact. The response rate was 5% (228/4900). Of the respondents, 89% were pharmacists (203/228), 84% were women (191/228) and 43% were 35-49 years (98/228). The respondents worked in pharmacies of different size, located both in rural and urban areas. The definition of substandard and falsified medical products was known by 182 of the 228 respondents (80%) and the main source of knowledge was media (61%, 111/228). The common European logo for authorized online pharmacies was not recognized by 74% (169/228). CONCLUSIONS For pharmacy employees to guide the public to safer medication purchases, knowledge about substandard and falsified medical products needs to be enhanced specially about legal international e-commerce.
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Affiliation(s)
- A Persson
- Department of Clinical Sciences Malmö, Lund University, Center for Primary Health Care Research, Malmö, Sweden
| | - M Troein
- Department of Clinical Sciences Malmö, Lund University, Center for Primary Health Care Research, Malmö, Sweden
| | - S Lundin
- Department of Arts and Cultural Sciences, Lund University, LUX, Lund, Sweden.,Stellenbosch Institute of Advanced Study (STIAS), Wallenberg, Research Centre at Stellenbosch University, Stellenbosch, South Africa
| | - P Midlöv
- Department of Clinical Sciences Malmö, Lund University, Center for Primary Health Care Research, Malmö, Sweden
| | - C Lenander
- Department of Clinical Sciences Malmö, Lund University, Center for Primary Health Care Research, Malmö, Sweden
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Kataria B, Nilsson Althén J, Smedby Ö, Persson A, Sökjer H, Sandborg M. IMAGE QUALITY AND POTENTIAL DOSE REDUCTION USING ADVANCED MODELED ITERATIVE RECONSTRUCTION (ADMIRE) IN ABDOMINAL CT - A REVIEW. Radiat Prot Dosimetry 2021; 195:177-187. [PMID: 33778892 PMCID: PMC8507455 DOI: 10.1093/rpd/ncab020] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/26/2021] [Accepted: 02/05/2021] [Indexed: 05/30/2023]
Abstract
Traditional filtered back projection (FBP) reconstruction methods have served the computed tomography (CT) community well for over 40 years. With the increased use of CT during the last decades, efforts to minimise patient exposure, while maintaining sufficient or improved image quality, have led to the development of model-based iterative reconstruction (MBIR) algorithms from several vendors. The usefulness of the advanced modeled iterative reconstruction (ADMIRE) (Siemens Healthineers) MBIR in abdominal CT is reviewed and its noise suppression and/or dose reduction possibilities explored. Quantitative and qualitative methods with phantom and human subjects were used. Assessment of the quality of phantom images will not always correlate positively with those of patient images, particularly at the higher strength of the ADMIRE algorithm. With few exceptions, ADMIRE Strength 3 typically allows for substantial noise reduction compared to FBP and hence to significant (≈30%) patient dose reductions. The size of the dose reductions depends on the diagnostic task.
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Affiliation(s)
| | - J Nilsson Althén
- Department of Health, Medicine & Caring Sciences, Linköping University, Linköping, Sweden
- Department of Medical Physics, Linköping University, Linköping, Sweden
| | - Ö Smedby
- Department of Biomedical Engineering and Health Systems (MTH), KTH Royal Institute of Technology, Stockholm, Sweden
| | - A Persson
- Department of Radiology, Linköping University, Linköping, Sweden
- Department of Health, Medicine & Caring Sciences, Linköping University, Linköping, Sweden
- Center for Medical Image Science & Visualization (CMIV), Linköping University, Linköping, Sweden
| | - H Sökjer
- Department of Health, Medicine & Caring Sciences, Linköping University, Linköping, Sweden
| | - M Sandborg
- Department of Health, Medicine & Caring Sciences, Linköping University, Linköping, Sweden
- Center for Medical Image Science & Visualization (CMIV), Linköping University, Linköping, Sweden
- Department of Medical Physics, Linköping University, Linköping, Sweden
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Lea H, Hutchinson E, Meeson A, Nampally S, Dennis G, Wallander M, Andersson T, Persson A, Johnston SC, Weatherall J, Khan F, Khader S. Can machine learning augment clinician adjudication of events in cardiovascular trials? A case study of major adverse cardiovascular events (MACE) across CVRM trials. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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 and introduction
Accurate identification of clinical outcome events is critical to obtaining reliable results in cardiovascular outcomes trials (CVOTs). Current processes for event adjudication are expensive and hampered by delays. As part of a larger project to more reliably identify outcomes, we evaluated the use of machine learning to automate event adjudication using data from the SOCRATES trial (NCT01994720), a large randomized trial comparing ticagrelor and aspirin in reducing risk of major cardiovascular events after acute ischemic stroke or transient ischemic attack (TIA).
Purpose
We studied whether machine learning algorithms could replicate the outcome of the expert adjudication process for clinical events of ischemic stroke and TIA. Could classification models be trained on historical CVOT data and demonstrate performance comparable to human adjudicators?
Methods
Using data from the SOCRATES trial, multiple machine learning algorithms were tested using grid search and cross validation. Models tested included Support Vector Machines, Random Forest and XGBoost. Performance was assessed on a validation subset of the adjudication data not used for training or testing in model development. Metrics used to evaluate model performance were Receiver Operating Characteristic (ROC), Matthews Correlation Coefficient, Precision and Recall. The contribution of features, attributes of data used by the algorithm as it is trained to classify an event, that contributed to a classification were examined using both Mutual Information and Recursive Feature Elimination.
Results
Classification models were trained on historical CVOT data using adjudicator consensus decision as the ground truth. Best performance was observed on models trained to classify ischemic stroke (ROC 0.95) and TIA (ROC 0.97). Top ranked features that contributed to classification of Ischemic Stroke or TIA corresponded to site investigator decision or variables used to define the event in the trial charter, such as duration of symptoms. Model performance was comparable across the different machine learning algorithms tested with XGBoost demonstrating the best ROC on the validation set for correctly classifying both stroke and TIA.
Conclusions
Our results indicate that machine learning may augment or even replace clinician adjudication in clinical trials, with potential to gain efficiencies, speed up clinical development, and retain reliability. Our current models demonstrate good performance at binary classification of ischemic stroke and TIA within a single CVOT with high consistency and accuracy between automated and clinician adjudication. Further work will focus on harmonizing features between multiple historical clinical trials and training models to classify several different endpoint events across trials. Our aim is to utilize these clinical trial datasets to optimize the delivery of CVOTs in further cardiovascular drug development.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): AstraZenca Plc
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Affiliation(s)
- H Lea
- AstraZeneca, BioPharmaceuticals R&D, Data Science and Artificial Intelligence, Applied Analytics and Artificial Intelligence, Gaithersburg, United States of America
| | - E Hutchinson
- AstraZeneca, BioPharmaceuticals R&D, Data Science and Artificial Intelligence, Applied Analytics and Artificial Intelligence, Gaithersburg, United States of America
| | - A Meeson
- Tessella Ltd, Abingdon, United Kingdom
| | - S Nampally
- AstraZeneca, BioPharmaceuticals R&D, Data Science and Artificial Intelligence, Applied Analytics and Artificial Intelligence, Gaithersburg, United States of America
| | - G Dennis
- AstraZeneca, BioPharmaceuticals R&D, Data Science and Artificial Intelligence, Applied Analytics and Artificial Intelligence, Gaithersburg, United States of America
| | - M Wallander
- AstraZeneca, Oncology R&D, Digital Health R&D, Gothenburg, Sweden
| | - T Andersson
- AstraZeneca, BioPharmaceuticals R&D, Late-stage CVRM, Gothenburg, Sweden
| | - A Persson
- AstraZeneca, Oncology R&D, Digital Health R&D, Gothenburg, Sweden
| | - S C Johnston
- University of Texas, Dell Medical School, Dean's Office, Austin, United States of America
| | - J Weatherall
- AstraZeneca, BioPharmaceuticals R&D, Data Science and Artificial Intelligence, Cambridge, United Kingdom
| | - F Khan
- AstraZeneca, BioPharmaceuticals R&D, Data Science and Artificial Intelligence, Applied Analytics and Artificial Intelligence, Gaithersburg, United States of America
| | - S Khader
- AstraZeneca, BioPharmaceuticals R&D, Data Science and Artificial Intelligence, Applied Analytics and Artificial Intelligence, Gaithersburg, United States of America
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Omling E, Salö M, Saluja S, Bergbrant S, Olsson L, Persson A, Björk J, Hagander L. Nationwide study of appendicitis in children. Br J Surg 2019; 106:1623-1631. [PMID: 31386195 PMCID: PMC6852580 DOI: 10.1002/bjs.11298] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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: 01/23/2019] [Revised: 05/17/2019] [Accepted: 06/03/2019] [Indexed: 12/25/2022]
Abstract
Background Paediatric surgical care is increasingly being centralized away from low‐volume centres, and prehospital delay is considered a risk factor for more complicated appendicitis. The aim of this study was to determine the incidence of paediatric appendicitis in Sweden, and to assess whether distance to the hospital was a risk factor for complicated disease. Methods A nationwide cohort study of all paediatric appendicitis cases in Sweden, 2001–2014, was undertaken, including incidence of disease in different population strata, with trends over time. The risk of complicated disease was determined by regression methods, with travel time as the primary exposure and individual‐level socioeconomic determinants as independent variables. Results Some 38 939 children with appendicitis were identified. Of these, 16·8 per cent had complicated disease, and the estimated risk of paediatric appendicitis by age 18 years was 2·5 per cent. Travel time to the treating hospital was not associated with complicated disease (adjusted odds ratio (OR) 1·00 (95 per cent c.i. 0·96 to 1·05) per 30‐min increase; P = 0·934). Level of education (P = 0·177) and family income (P = 0·120) were not independently associated with increased risk of complicated disease. Parental unemployment (adjusted OR 1·17, 95 per cent c.i. 1·05 to 1·32; P = 0·006) and having parents born outside Sweden (1 parent born in Sweden: adjusted OR 1·12, 1·01 to 1·25; both parents born outside Sweden: adjusted OR 1·32, 1·18 to 1·47; P < 0·001) were associated with an increased risk of complicated appendicitis. Conclusion Every sixth child diagnosed with appendicitis in Sweden has a more complicated course of disease. Geographical distance to the surgical facility was not a risk factor for complicated appendicitis.
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Affiliation(s)
- E Omling
- Paediatric Surgery, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - M Salö
- Paediatric Surgery, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - S Saluja
- Department of Surgery, Weill Cornell Medicine, New York, USA
| | - S Bergbrant
- Paediatric Surgery, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - L Olsson
- Paediatric Surgery, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - A Persson
- Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden.,GIS Centre, Lund University, Lund, Sweden
| | - J Björk
- Department of Laboratory Medicine, Lund University, Skåne University Hospital, Lund, Sweden.,Forum South, Clinical Studies Sweden, Lund University, Skåne University Hospital, Lund, Sweden
| | - L Hagander
- Paediatric Surgery, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
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Berndtsson R, Becker P, Persson A, Aspegren H, Haghighatafshar S, Jönsson K, Larsson R, Mobini S, Mottaghi M, Nilsson J, Nordström J, Pilesjö P, Scholz M, Sternudd C, Sörensen J, Tussupova K. Drivers of changing urban flood risk: A framework for action. J Environ Manage 2019; 240:47-56. [PMID: 30928794 DOI: 10.1016/j.jenvman.2019.03.094] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 03/12/2019] [Accepted: 03/19/2019] [Indexed: 06/09/2023]
Abstract
This study focuses on drivers for changing urban flood risk. We suggest a framework for guiding climate change adaptation action concerning flood risk and manageability in cities. The identified key drivers of changing flood hazard and vulnerability are used to provide an overview of each driver's impact on flood risk and manageability at the city level. We find that identified drivers for urban flood risk can be grouped in three different priority areas with different time horizon. The first group has high impact but is manageable at city level. Typical drivers in this group are related to the physical environment such as decreasing permeability and unresponsive engineering. The second group of drivers is represented by public awareness and individual willingness to participate and urbanization and urban sprawl. These drivers may be important and are manageable for the cities and they involve both short-term and long-term measures. The third group of drivers is related to policy and long-term changes. This group is represented by economic growth and increasing values at risk, climate change, and increasing complexity of society. They have all high impact but low manageability. Managing these drivers needs to be done in a longer time perspective, e.g., by developing long-term policies and exchange of ideas.
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Affiliation(s)
- R Berndtsson
- Water Resources Engineering, Lund University, SE-221 00, Lund, Sweden; Center for Middle Eastern Studies, Lund University, SE-221 00, Lund, Sweden.
| | - P Becker
- Risk Management and Societal Safety, Lund University, SE-221 00, Lund, Sweden; Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa
| | - A Persson
- GIS Centre/Physical Geography and Ecosystem Science, Lund University, SE-221 00, Lund, Sweden
| | - H Aspegren
- Water and Environmental Engineering, Lund University, SE-221 00, Lund, Sweden; VA SYD, SE-211 20 Malmö, Sweden
| | - S Haghighatafshar
- Water and Environmental Engineering, Lund University, SE-221 00, Lund, Sweden
| | - K Jönsson
- Water and Environmental Engineering, Lund University, SE-221 00, Lund, Sweden
| | - R Larsson
- Water Resources Engineering, Lund University, SE-221 00, Lund, Sweden
| | - S Mobini
- Water Resources Engineering, Lund University, SE-221 00, Lund, Sweden
| | - M Mottaghi
- Water and Environmental Engineering, Lund University, SE-221 00, Lund, Sweden; VA SYD, SE-211 20 Malmö, Sweden; Architecture and Built Environment, Lund University, SE-221 00, Lund, Sweden
| | - J Nilsson
- Faculty of Culture and Society, Malmö University, SE-205 06, Malmö, Sweden
| | - J Nordström
- AgriFood, Economics Centre, Lund University, SE-220 07, Lund, Sweden
| | - P Pilesjö
- Center for Middle Eastern Studies, Lund University, SE-221 00, Lund, Sweden; GIS Centre/Physical Geography and Ecosystem Science, Lund University, SE-221 00, Lund, Sweden
| | - M Scholz
- Water Resources Engineering, Lund University, SE-221 00, Lund, Sweden; Department of Civil Engineering Science, University of Johannesburg, PO Box 524, Johannesburg, South Africa; Directorate of Civil Engineering, University of Salford, Greater Manchester, M5 4WT, United Kingdom
| | - C Sternudd
- Architecture and Built Environment, Lund University, SE-221 00, Lund, Sweden
| | - J Sörensen
- Water Resources Engineering, Lund University, SE-221 00, Lund, Sweden
| | - K Tussupova
- Water Resources Engineering, Lund University, SE-221 00, Lund, Sweden; Center for Middle Eastern Studies, Lund University, SE-221 00, Lund, Sweden; Center for Transfer of Technology, Karaganda State Medical University, 100004, Karaganda, Kazakhstan
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Svendsen K, González IG, Hansson M, Svensson JB, Ekerfelt H, Persson A, Lundh O. Optimization of soft X-ray phase-contrast tomography using a laser wakefield accelerator. Opt Express 2018; 26:33930-33941. [PMID: 30650824 DOI: 10.1364/oe.26.033930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 11/02/2018] [Indexed: 06/09/2023]
Abstract
X-ray phase-contrast imaging allows for non-invasive analysis in low-absorbing materials, such as soft tissue. Its application in medical or materials science has yet to be realized on a wider scale due to the requirements on the X-ray source, demanding high flux and small source size. Laser wakefield accelerators generate betatron X-rays fulfilling these criteria and can be suitable sources for phase-contrast imaging. In this work, we present the first phase-contrast images obtained by using ionization injection-based laser wakefield acceleration, which results in a higher photon yield and smoother X-ray beam profile compared to self-injection. A peak photon yield of 1.9 × 1011 ph/sr and a source size of 3 μm were estimated. Furthermore, the current laser parameters produce an X-ray spectrum mainly in the soft X-ray range, in which laser-plasma based phase-contrast imaging had yet to be studied. The phase-contrast images of a Chrysopa lacewing resolve features on the order of 4 μm. These images are further used for a tomographic reconstruction and a volume rendering, showing details on the order of tens of μm.
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10
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Van Deurs M, Andersson A, Vinterstare J, Didenko A, Persson A, Brönmark C, Nilsson PA. Using accelerometry to quantify prey attack and handling behaviours in piscivorous pike Esox lucius. J Fish Biol 2017; 90:2462-2469. [PMID: 28393360 DOI: 10.1111/jfb.13310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 03/06/2017] [Indexed: 06/07/2023]
Abstract
Accelerometer technology was used to evaluate behaviours in the teleost ambush predator pike Esox lucius foraging on crucian carp Carassius carassius. Automated rule-based estimates of prey-size determined handling time were obtained and are compared with video-recorded behaviours. Solutions to tag attachment and the limitations imposed by battery-time and data-logging capacities are evaluated.
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Affiliation(s)
- M Van Deurs
- Department of Biology, Ecology Building, Lund University, SE-223 62, Lund, Sweden
- National Institute for Aquatic Resources, Section for Marine Living Resources, Technical University of Denmark, Jaegersborgs Alle 1, DK-2920, Charlottenlund, Denmark
| | - A Andersson
- Department of Biology, Ecology Building, Lund University, SE-223 62, Lund, Sweden
| | - J Vinterstare
- Department of Biology, Ecology Building, Lund University, SE-223 62, Lund, Sweden
| | - A Didenko
- Institute of Fisheries of the National Academy of Agrarian Sciences of Ukraine, Obukhivka St. 135, 03164, Kiev, Ukraine
| | - A Persson
- Department of Biology, Ecology Building, Lund University, SE-223 62, Lund, Sweden
| | - C Brönmark
- Department of Biology, Ecology Building, Lund University, SE-223 62, Lund, Sweden
| | - P A Nilsson
- Department of Biology, Ecology Building, Lund University, SE-223 62, Lund, Sweden
- Department of Environmental and Life Sciences-Biology, Karlstad University, SE-651 88, Karlstad, Sweden
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Šmíd M, Gallardo González I, Ekerfelt H, Björklund Svensson J, Hansson M, Wood JC, Persson A, Mangles SPD, Lundh O, Falk K. Highly efficient angularly resolving x-ray spectrometer optimized for absorption measurements with collimated sources. Rev Sci Instrum 2017; 88:063102. [PMID: 28667973 DOI: 10.1063/1.4986464] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Highly collimated betatron radiation from a laser wakefield accelerator is a promising tool for spectroscopic measurements. Therefore, there is a requirement to create spectrometers suited to the unique properties of such a source. We demonstrate a spectrometer which achieves an energy resolution of <5 eV at 9 keV (E∕ΔE>1800) and is angularly resolving the x-ray emission allowing the reference and spectrum to be recorded at the same time. The single photon analysis is used to significantly reduce the background noise. Theoretical performance of various configurations of the spectrometer is calculated by a ray-tracing algorithm. The properties and performance of the spectrometer including the angular and spectral resolution are demonstrated experimentally on absorption above the K-edge of a Cu foil backlit by a laser-produced betatron radiation x-ray beam.
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Affiliation(s)
- M Šmíd
- Institute of Physics of the ASCR, ELI-Beamlines, 18221 Prague, Czech Republic
| | | | - H Ekerfelt
- Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden
| | | | - M Hansson
- Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden
| | - J C Wood
- John Adams Institute for Accelerator Science, Imperial College London, SW7 2AZ London, United Kingdom
| | - A Persson
- Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden
| | - S P D Mangles
- John Adams Institute for Accelerator Science, Imperial College London, SW7 2AZ London, United Kingdom
| | - O Lundh
- Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden
| | - K Falk
- Institute of Physics of the ASCR, ELI-Beamlines, 18221 Prague, Czech Republic
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12
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Warntjes JBM, Persson A, Berge J, Zech W. Myelin Detection Using Rapid Quantitative MR Imaging Correlated to Macroscopically Registered Luxol Fast Blue-Stained Brain Specimens. AJNR Am J Neuroradiol 2017; 38:1096-1102. [PMID: 28428209 DOI: 10.3174/ajnr.a5168] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 02/03/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Myelin detection is of great value in monitoring diseases such as multiple sclerosis and dementia. However, most MR imaging methods to measure myelin are challenging for routine clinical use. Recently, a novel method was published, in which the presence of myelin is inferred by using its effect on the intra- and extracellular water relaxation rates and proton density, observable by rapid quantitative MR imaging. The purpose of this work was to validate this method further on the brains of 12 fresh, intact cadavers. MATERIALS AND METHODS The 12 brains were scanned with a quantification sequence to determine the longitudinal and transverse relaxation rates and proton density as input for the myelin estimations. Subsequently, the brains were excised at postmortem examination, and brain slices were stained with Luxol fast blue to verify the presence of myelin. The optical density values of photographs of the stained brain slices were registered with the MR images and correlated with the myelin estimation performed by quantitative MR imaging. RESULTS A correlation was found between the 2 methods with a mean Spearman ρ for all subjects of 0.74 ± 0.11. Linear regression showed a mean intercept of 1.50% ± 2.84% and a mean slope of 4.37% ± 1.73%/%. A lower correlation was found for the separate longitudinal relaxation rates and proton density (ρ = 0.63 ± 0.12 and -0.73 ± 0.09, respectively). For transverse relaxation rates, the ρ was very low (0.11 ± 0.28). CONCLUSIONS The observed correlation supports the validity of myelin measurement by using the MR imaging quantification method.
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Affiliation(s)
- J B M Warntjes
- From the Center for Medical Image Science and Visualization (J.B.M.W., A.P., W.Z.)
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences (J.B.M.W.), Linköping University, Linköping, Sweden
- SyntheticMR AB (J.B.M.W.), Linköping, Sweden
| | - A Persson
- From the Center for Medical Image Science and Visualization (J.B.M.W., A.P., W.Z.)
| | - J Berge
- Institute of Forensic Medicine (J.B., W.Z.), Linköping, Sweden
| | - W Zech
- From the Center for Medical Image Science and Visualization (J.B.M.W., A.P., W.Z.)
- Institute of Forensic Medicine (J.B., W.Z.), Linköping, Sweden
- Institute of Forensic Medicine (W.Z.), University of Bern, Bern, Switzerland
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13
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Tomas L, Björkbacka H, Edsfeldt A, Danielsson A, Wigren M, Grufman H, Persson A, Prehn C, Adamski J, Nilsson J, Gonçalves I. A lipid metabolite profile in atherosclerotic plaques associated with increased inflammation and cardiovascular risk. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.090] [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: 10/21/2022]
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14
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Sandgren B, Skorpil M, Nowik P, Olivecrona H, Crafoord J, Weidenhielm L, Persson A. Assessment of wear and periacetabular osteolysis using dual energy computed tomography on a pig cadaver to identify the lowest acceptable radiation dose. Bone Joint Res 2016; 5:307-13. [PMID: 27445358 PMCID: PMC5005473 DOI: 10.1302/2046-3758.57.2000566] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 03/29/2016] [Indexed: 12/25/2022] Open
Abstract
Objectives Computed tomography (CT) plays an important role in evaluating wear and periacetabular osteolysis (PAO) in total hip replacements. One concern with CT is the high radiation exposure since standard pelvic CT provides approximately 3.5 millisieverts (mSv) of radiation exposure, whereas a planar radiographic examination with three projections totals approximately 0.5 mSv. The objective of this study was to evaluate the lowest acceptable radiation dose for dual-energy CT (DECT) images when measuring wear and periacetabular osteolysis in uncemented metal components. Materials and Methods A porcine pelvis with bilateral uncemented hip prostheses and with known linear wear and acetabular bone defects was examined in a third-generation multidetector DECT scanner. The examinations were performed with four different radiation levels both with and without iterative reconstruction techniques. From the high and low peak kilo voltage acquisitions, polychrmoatic images were created together with virtual monochromatic images of energies 100 kiloelectron volts (keV) and 150 keV. Results We could assess wear and PAO while substantially lowering the effective radiation dose to 0.7 mSv for a total pelvic view with an accuracy of around 0.5 mm for linear wear and 2 mm to 3 mm for PAO. Conclusion CT for detection of prosthetic wear and PAO could be used with clinically acceptable accuracy at a radiation exposure level equal to plain radiographic exposures. Cite this article: B. Sandgren, M. Skorpil, P. Nowik, H. Olivecrona, J. Crafoord, L. Weidenhielm, A. Persson. Assessment of wear and periacetabular osteolysis using dual energy computed tomography on a pig cadaver to identify the lowest acceptable radiation dose. Bone Joint Res 2016;5:307–313. DOI: 10.1302/2046-3758.57.2000566.
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Affiliation(s)
- B Sandgren
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - M Skorpil
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - P Nowik
- Department of Medical Physics, Karolinska University Hospital, Stockholm, Sweden
| | - H Olivecrona
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - J Crafoord
- Department of Radiology, Ersta Hospital, Stockholm, Sweden
| | - L Weidenhielm
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - A Persson
- Center for Medical Image Science and Visualization, Linköping University, Hêlsouniversitetet, Linköping, Sweden
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15
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Bergström G, Berglund G, Blomberg A, Brandberg J, Engström G, Engvall J, Eriksson M, de Faire U, Flinck A, Hansson MG, Hedblad B, Hjelmgren O, Janson C, Jernberg T, Johnsson Å, Johansson L, Lind L, Löfdahl CG, Melander O, Östgren CJ, Persson A, Persson M, Sandström A, Schmidt C, Söderberg S, Sundström J, Toren K, Waldenström A, Wedel H, Vikgren J, Fagerberg B, Rosengren A. The Swedish CArdioPulmonary BioImage Study: objectives and design. J Intern Med 2015; 278:645-59. [PMID: 26096600 PMCID: PMC4744991 DOI: 10.1111/joim.12384] [Citation(s) in RCA: 210] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cardiopulmonary diseases are major causes of death worldwide, but currently recommended strategies for diagnosis and prevention may be outdated because of recent changes in risk factor patterns. The Swedish CArdioPulmonarybioImage Study (SCAPIS) combines the use of new imaging technologies, advances in large-scale 'omics' and epidemiological analyses to extensively characterize a Swedish cohort of 30 000 men and women aged between 50 and 64 years. The information obtained will be used to improve risk prediction of cardiopulmonary diseases and optimize the ability to study disease mechanisms. A comprehensive pilot study in 1111 individuals, which was completed in 2012, demonstrated the feasibility and financial and ethical consequences of SCAPIS. Recruitment to the national, multicentre study has recently started.
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Affiliation(s)
- G Bergström
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Physiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - G Berglund
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - A Blomberg
- Department of Public Health and Clinical Medicine, Division of Medicine/Respiratory Medicine, Umeå University, Umeå, Sweden
| | - J Brandberg
- Department of Radiology, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Radiology, University of Gothenburg, Gothenburg, Sweden
| | - G Engström
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - J Engvall
- Department of Clinical Physiology, County Council of Östergötland, Linköping, Sweden.,Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - M Eriksson
- Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital, Stockholm, Sweden
| | - U de Faire
- Unit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden
| | - A Flinck
- Department of Radiology, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Radiology, University of Gothenburg, Gothenburg, Sweden
| | - M G Hansson
- Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics, Uppsala University, Uppsala, Sweden
| | - B Hedblad
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - O Hjelmgren
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Physiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - C Janson
- Department of Medical Sciences: Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - T Jernberg
- Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden.,Department of Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Å Johnsson
- Department of Radiology, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Radiology, University of Gothenburg, Gothenburg, Sweden
| | - L Johansson
- Department of Radiology, Oncology and Radiation Science, Unit of Radiology, Uppsala, Sweden
| | - L Lind
- Department of Clinical Sciences, Uppsala University, Uppsala, Sweden
| | - C-G Löfdahl
- Department of Clinical Sciences, Lund University, Lund, Sweden.,Department of Respiratory Medicine and Allergology, Lund University Hospital, Lund, Sweden
| | - O Melander
- Department of Clinical Sciences, Lund University, Lund, Sweden.,Department of Internal Medicine, Skåne University Hospital, Malmö, Sweden
| | - C J Östgren
- Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - A Persson
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden.,Department of Radiology in Linkoping, County Council of Östergötland, Linköping, Sweden
| | - M Persson
- Department of Clinical Sciences, Lund University, Lund, Sweden.,Department of Internal Medicine, Skåne University Hospital, Malmö, Sweden
| | - A Sandström
- Department of Public Health and Clinical Medicine, Medicine and Heart Centre, Umeå University, Umeå, Sweden
| | - C Schmidt
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
| | - S Söderberg
- Department of Public Health and Clinical Medicine, Medicine and Heart Centre, Umeå University, Umeå, Sweden
| | - J Sundström
- Department of Clinical Sciences, Uppsala University, Uppsala, Sweden.,Uppsala Clinical Research Centre, Uppsala, Sweden
| | - K Toren
- Section of Occupational and Environmental Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - A Waldenström
- Department of Public Health and Clinical Medicine Thoracic Center, Umeå University Hospital, Umeå University, Umeå, Sweden
| | - H Wedel
- Epidemiology and Biostatistics, Nordic School of Public Health, Gothenburg, Sweden
| | - J Vikgren
- Department of Radiology, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Radiology, University of Gothenburg, Gothenburg, Sweden
| | - B Fagerberg
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
| | - A Rosengren
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
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Abstract
OBJECTIVE To compare a superabsorbent polymer dressing (DryMax Extra; DME), an antibacterial absorbent polymer dressing (Sorbact absorption dressing; SB) and an antibacterial superabsorbent polymer dressing (Sorbion Sachet S; SSS) activity against Pseudomonas aeruginosa biofilms. METHOD A 3D acellular synthetic soft tissue (ASST) allowing biofilm formation, was prepared and inoculated with Pseudomonas aeruginosa, before the application of dressings. The dressings DME, with and without a silver net, and two benchmark dressings SB and SSS were tested. After 24 hours' incubation, qualitative assessment by visual screening of the soft tissue and bacterial burden assessment in the dressings and acellular soft tissue model were performed. RESULTS DME combined with a silver net gave a distinct and wide colourless zone of inhibition while partial zones of inhibition were seen for DME, SSS and SB. Compared with the tissues exposed to the other dressings, those exposed to SB and the bacterial control appeared green and opaque. In descending order, the most visual growth was seen in bacterial control, followed by SB, SSS, and DME. The bacterial load was equivalent for all dressings without an antimicrobial substance in both ASST (around log 10) and dressing (around log 11). The bacterial load for DME combined with a silver net, in comparison to DME alone was significantly reduced, with log 3.6 in dressings and log 4.2 in ASST. CONCLUSION The removal of bacteria by DME was equivalent to SB and SSS. Furthermore, DME limited the production of the green colour, indicative of Pyocyanin. If extrapolated to a wound, the ability of DME to absorb Pseudomonas aeruginosa and limit Pyocyanin levels in the wound might lead to reduced virulence.
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17
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Persson A. Early rehabilitation after perineal reconstruction with musculocutaneous flaps. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.2123] [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: 11/26/2022]
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18
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Newman CE, de Wit J, Persson A, Holt M, Slavin S, Kidd MR, Post JJ, Wright E, Mao L. Understanding Concerns About Treatment-as-Prevention Among People with HIV who are not Using Antiretroviral Therapy. AIDS Behav 2015; 19:821-31. [PMID: 25432878 DOI: 10.1007/s10461-014-0959-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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: 01/17/2023]
Abstract
The use of antiretroviral therapy to prevent HIV transmission is now advocated in many settings, yet little research has documented the views of people with HIV. Semi-structured interviews were conducted in Australia between 2012 and 2014 with 27 HIV-positive people not using treatment at the time of interview. Thematic analysis of views on treatment-as-prevention found that while many participants recognised potential prevention benefits, only a minority was in support of initiating treatment solely to achieve those benefits. A range of uncertain or critical views were expressed regarding who would benefit, risk reduction, and changing treatment norms. Participants resisted responsibility narratives that implied treatment should be used for the public good, in favour of making considered decisions about their preferred approach to managing HIV. Engaging communities in dialogue and debate regarding the risks and benefits of treatment will be critical if this new prevention strategy is to engender public trust.
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Affiliation(s)
- C E Newman
- Centre for Social Research in Health, UNSW Australia, Level 2 John Goodsell Building, Sydney, NSW, 2052, Australia,
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19
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Therkildsen C, Ladelund S, Rambech E, Persson A, Petersen A, Nilbert M. Glioblastomas, astrocytomas and oligodendrogliomas linked to Lynch syndrome. Eur J Neurol 2015; 22:717-24. [PMID: 25648859 DOI: 10.1111/ene.12647] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [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: 08/12/2014] [Accepted: 11/12/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND PURPOSE Brain tumors represent a rare and relatively uncharacterized tumor type in Lynch syndrome. METHODS The national Danish Hereditary Nonpolyposis Colorectal Cancer Register was utilized to estimate the cumulative life-time risk for brain tumors in Lynch syndrome, and the mismatch repair (MMR) status in all tumors available was evaluated. RESULTS Primary brain tumors developed in 41/288 families at a median age of 41.5 (range 2-73) years. Biallelic MMR gene mutations were linked to brain tumor development in childhood. The risk of brain tumors was significantly higher (2.5%) in MSH2 gene mutation carriers compared to patients with mutations in MLH1 or MSH6. Glioblastomas predominated (56%), followed by astrocytomas (22%) and oligodendrogliomas (9%). MMR status was assessed in 10 tumors, eight of which showed MMR defects. None of these tumors showed immunohistochemical staining suggestive of the IDH1 R132H mutation. CONCLUSION In Lynch syndrome brain tumors occurred in 14% of the families with significantly higher risks for individuals with MSH2 gene mutations and development of childhood brain tumors in individuals with constitutional MMR defects.
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Affiliation(s)
- C Therkildsen
- Clinical Research Centre, Copenhagen University Hospital, Hvidovre, Denmark; Division of Oncology and Pathology, Institute of Clinical Sciences, Lund, Sweden
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20
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Ilkhanizadeh S, Miroshnikova Y, Frantz A, James D, Berger M, McKnight T, Weaver V, Weiss W, Persson A. NT-11 * TARGETING INTERSTITIAL FLUID PRESSURE TO REDUCE TUMOR GROWTH AND INCREASE DRUG UPTAKE IN BRAIN TUMORS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou265.11] [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: 11/14/2022] Open
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21
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Edsfeldt A, Grufman H, Nitulescu M, Persson A, Nilsson M, Nilsson J, Goncalves I. Circulating biomarkers for expression of pro-inflammatory cytokines in carotid plaques. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.153] [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: 10/25/2022]
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22
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Persson A, Sim SC, Virding S, Onishchenko N, Schulte G, Ingelman-Sundberg M. Decreased hippocampal volume and increased anxiety in a transgenic mouse model expressing the human CYP2C19 gene. Mol Psychiatry 2014; 19:733-41. [PMID: 23877834 PMCID: PMC4031638 DOI: 10.1038/mp.2013.89] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 05/03/2013] [Accepted: 05/24/2013] [Indexed: 12/17/2022]
Abstract
Selective serotonin reuptake inhibitors, tricyclic antidepressants, various psychoactive drugs, as well as endogenous steroids and cannabinoid-like compounds are metabolized by the polymorphic cytochrome P450 2C19 (CYP2C19). Absence of this enzyme has been recently shown to associate with lower levels of depressive symptoms in human subjects. To investigate endogenous functions of CYP2C19 and its potential role in brain function, we have used a transgenic mouse model carrying the human CYP2C19 gene. Here, CYP2C19 was expressed in the developing fetal, but not adult brain and was associated with altered fetal brain morphology, where mice homozygous for the CYP2C19 transgenic insert had severely underdeveloped hippocampus and complete callosal agenesis and high neonatal lethality. CYP2C19 expression was also found in human fetal brain. In adult hemizygous mice we observed besides decreased hippocampal volume, an altered neuronal composition in the hippocampal dentate gyrus. Reduced hippocampal volumes have been reported in several psychiatric disorders, supporting the relevance of this model. Here we found that adult hemizygous CYP2C19 transgenic mice demonstrate behavior indicative of increased stress and anxiety based on four different tests. We hypothesize that expression of the CYP2C19 enzyme prenatally may affect brain development by metabolizing endogenous compounds influencing this development. Furthermore, CYP2C19 polymorphism may have a role in interindividual susceptibility for psychiatric disorders.
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Affiliation(s)
- A Persson
- Section of Pharmacogenetics, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - S C Sim
- Section of Pharmacogenetics, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - S Virding
- Section of Pharmacogenetics, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - N Onishchenko
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - G Schulte
- Section of Receptor Biology and Signaling, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - M Ingelman-Sundberg
- Section of Pharmacogenetics, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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23
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Grufman H, Gonçalves I, Edsfeldt A, Nitulescu M, Persson A, Nilsson M, Nilsson J. Plasma levels of high-sensitive C-reactive protein do not correlate with inflammatory activity in carotid atherosclerotic plaques. J Intern Med 2014; 275:127-33. [PMID: 24010553 DOI: 10.1111/joim.12133] [Citation(s) in RCA: 10] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND It is well established that subjects with moderately elevated plasma levels of C-reactive protein (CRP) have an increased risk of development of cardiovascular events. As atherosclerosis is a disease characterized by chronic arterial inflammation, it is possible that moderate increases in CRP level reflect the presence of plaque inflammation. To investigate this possibility, we compared plasma levels of hsCRP the day before carotid endarterectomy with the degree of inflammation in the excised plaque tissue. METHODS Luminex immunoassays were used to determine the levels of IL-6, IL-10, monocyte chemoattractant protein-1 and tumour necrosis factor-α (TNF-α) in plasma and in homogenized plaque tissue from 160 endarterectomy specimens. Plaque sections were stained with antibodies against CD68 to determine the plaque macrophage content. RESULTS Plasma high-sensitivity (hs)CRP levels were significantly correlated with plasma IL-6 and TNF-α. However, there were no significant associations between plasma hsCRP concentration and plaque cytokine levels or macrophage contents. CONCLUSIONS The present findings strongly argue against hsCRP as a marker of plaque inflammation. Hence, it is more likely that elevated hsCRP is a sign of a subclinical systemic inflammation and this in turn may contribute to progression of cardiovascular disease.
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Affiliation(s)
- H Grufman
- Experimental Cardiovascular Research Group, Clinical Research Center, Clinical Sciences, Lund University, Malmö, Sweden; Deptartment of Cardiology, Skåne University Hospital, Malmö, Sweden
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Rudawski P, Heyl CM, Brizuela F, Schwenke J, Persson A, Mansten E, Rakowski R, Rading L, Campi F, Kim B, Johnsson P, L'huillier A. A high-flux high-order harmonic source. Rev Sci Instrum 2013; 84:073103. [PMID: 23902040 DOI: 10.1063/1.4812266] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We develop and implement an experimental strategy for the generation of high-energy high-order harmonics (HHG) in gases for studies of nonlinear processes in the soft x-ray region. We generate high-order harmonics by focusing a high energy Ti:Sapphire laser into a gas cell filled with argon or neon. The energy per pulse is optimized by an automated control of the multiple parameters that influence the generation process. This optimization procedure allows us to obtain energies per pulse and harmonic order as high as 200 nJ in argon and 20 nJ in neon, with good spatial properties, using a loose focusing geometry (f#≈400) and a 20 mm long medium. We also theoretically examine the macroscopic conditions for absorption-limited conversion efficiency and optimization of the HHG pulse energy for high-energy laser systems.
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Affiliation(s)
- P Rudawski
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden.
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25
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Bie L, Ju Y, Jin Z, Donovan L, Birks S, Grunewald L, Zmuda F, Pilkington G, Kaul A, Chen YH, Dahiya S, Emnett R, Gianino S, Gutmann D, Poschl J, Bianchi E, Bockstaller M, Neumann P, Schuller U, Gevorgian A, Morozova E, Kazantsev I, Iukhta T, Safonova S, Punanov Y, Zheludkova O, Afanasyev B, Buss M, Remke M, Gandhi K, Kool M, Northcott P, Pfister S, Taylor M, Castellino R, Thompson J, Margraf L, Donahue D, Head H, Murray J, Burger P, Wortham M, Reitman Z, He Y, Bigner D, Yan H, Lee C, Triscott J, Foster C, Manoranjan B, Pambid MR, Fotovati A, Berns R, Venugopal C, O'Halloran K, Narendran A, Northcott P, Taylor MD, Singh SK, Singhal A, Rassekh R, Maxwell CA, Dunham C, Dunn SE, Pambid MR, Berns R, Hu K, Adomat H, Moniri M, Chin MY, Hessein M, Zisman N, Maurer N, Dunham C, Guns E, Dunn S, Koks C, De Vleeschouwer S, Graf N, Van Gool S, D'Asti E, Huang A, Korshunov A, Pfister S, Rak J, Gump W, Moriarty T, Gump W, Skjei K, Karkare S, Castelo-Branco P, Choufani S, Mack S, Gallagher D, Zhang C, Merino D, Wasserman J, Kool M, Jones DT, Croul S, Kreitzer F, Largaespada D, Conklin B, Taylor M, Weiss W, Garzia L, Morrissy S, Zayne K, Wu X, Dirks P, Hawkins C, Dick J, Stein L, Collier L, Largaespada D, Dupuy A, Taylor M, Rampazzo G, Moraes L, Paniago M, Oliveira I, Hitzler J, Silva N, Cappellano A, Cavalheiro S, Alves MT, Cerutti J, Toledo S, Liu Z, Zhao X, Mao H, Baxter P, Wang JCY, Huang Y, Yu L, Su J, Adekunle A, Perlaky L, Hurwitz M, Hurwitz R, Lau C, Chintagumpala M, Blaney S, Baruchel S, Li XN, Zhang J, Hariono S, Hashizume R, Fan Q, James CD, Weiss WA, Nicolaides T, Madsen PJ, Slaunwhite ES, Dirks PB, Ma JF, Henn RE, Hanno AG, Boucher KL, Storm PB, Resnick AC, Lourdusamy A, Rogers H, Ward J, Rahman R, Malkin D, Gilbertson R, Grundy R, Lourdusamy A, Rogers H, Ward J, Rahman R, Gilbertson R, Grundy R, Karajannis M, Fisher M, Pfister S, Milla S, Cohen K, Legault G, Wisoff J, Harter D, Merkelson A, Bloom M, Dhall G, Jones D, Korshunov A, Taylor MD, Pfister S, Eberhart C, Sievert A, Resnick A, Zagzag D, Allen J, Hankinson T, Gump J, Serrano-Almeida C, Torok M, Weksberg R, Handler M, Liu A, Foreman N, Garancher A, Rocques N, Miquel C, Sainte-Rose C, Delattre O, Bourdeaut F, Eychene A, Tabori U, Pouponnot C, Danielpour M, Levy R, Antonuk CD, Rodriguez J, Aravena JM, Kim GB, Gate D, Bannykh S, Svendsen C, Huang X, Town T, Breunig J, Amakye D, Robinson D, Rose K, Cho YJ, Ligon KL, Sharp T, Ando Y, Geoerger B, He Y, Doz F, Ashley D, Hargrave D, Casanova M, Tawbi H, Heath J, Bouffet E, Brandes AA, Chisholm J, Rodon J, Dubuc AM, Thomas A, Mita A, MacDonald T, Kieran M, Eisenstat D, Song X, Danielpour M, Levy R, Antonuk CD, Rodriguez J, Hashizume R, Aravena JM, Kim GB, Gate D, Bannykh S, Svendsen C, Town T, Breunig J, Morrissy AS, Mayoh C, Lo A, Zhang W, Thiessen N, Tse K, Moore R, Mungall A, Wu X, Van Meter TE, Cho YJ, Collins VP, MacDonald TJ, Li XN, Stehbens S, Fernandez-Lopez A, Malkin D, Marra MA, Taylor MD, Karajannis M, Legault G, Hagiwara M, Vega E, Merkelson A, Wisoff J, Younger S, Golfinos J, Roland JT, Allen J, Antonuk CD, Levy R, Kim GB, Town T, Danielpour M, Breunig J, Pak E, Barshow S, Zhao X, Ponomaryov T, Segal R, Levy R, Antonuk CD, Aravena JM, Kim GB, Svendsen C, Town T, Danielpour M, Zhu S, Breunig J, Chi S, Cohen K, Fisher M, Biegel J, Bowers D, Fangusaro J, Manley P, Janss A, Zimmerman MA, Wu X, Kieran M, Sayour E, Pham C, Sanchez-Perez L, Snyder D, Flores C, Kemeny H, Xie W, Cui X, Bigner D, Taylor MD, Sampson J, Mitchell D, Bandopadhayay P, Nguyen B, Masoud S, Vue N, Gholamin S, Yu F, Schubert S, Bergthold G, Weiss WA, Mitra S, Qi J, Bradner J, Kieran M, Beroukhim R, Cho YJ, Reddick W, Glass J, Ji Q, Paulus E, James CD, Gajjar A, Ogg R, Vanner R, Remke M, Aviv T, Lee L, Zhu X, Clarke I, Taylor M, Dirks P, Shuman MA, Hamilton R, Pollack I, Calligaris D, Liu X, Feldman D, Thompson C, Ide J, Buhrlage S, Gray N, Kieran M, Jan YN, Stiles C, Agar N, Remke M, Cavalli FMG, Northcott PA, Kool M, Pfister SM, Taylor MD, Project MAGIC, Rakopoulos P, Jan LY, Pajovic S, Buczkowicz P, Morrison A, Bouffet E, Bartels U, Becher O, Hawkins C, Truffaux N, Puget S, Philippe C, Gump W, Castel D, Taylor K, Mackay A, Le Dret L, Saulnier P, Calmon R, Boddaert N, Blauwblomme T, Sainte-Rose C, Jones C, Mutchnick I, Grill J, Liu X, Ebling M, Ide J, Wang L, Davis E, Marchionni M, Stuart D, Alberta J, Kieran M, Li KKW, Stiles C, Agar N, Remke M, Cavalli FMG, Northcott PA, Kool M, Pfister SM, Taylor MD, Project MAGIC, Tien AC, Pang JCS, Griveau A, Rowitch D, Ramkissoon L, Horowitz P, Craig J, Ramkissoon S, Rich B, Bergthold G, Tabori U, Taha H, Ng HK, Bowers D, Hawkins C, Packer R, Eberhart C, Goumnerova L, Chan J, Santagata S, Pomeroy S, Ligon A, Kieran M, Jackson S, Beroukhim R, Ligon K, Kuan CT, Chandramohan V, Keir S, Pastan I, Bigner D, Zhou Z, Ho S, Voss H, Patay Z, Souweidane M, Salloum R, DeWire M, Fouladi M, Goldman S, Chow L, Hummel T, Dorris K, Miles L, Sutton M, Howarth R, Stevenson C, Leach J, Griesinger A, Donson A, Hoffman L, Birks D, Amani V, Handler M, Foreman N, Sangar MC, Pai A, Pedro K, Ditzler SH, Girard E, Olson J, Gustafson WC, Meyerowitz J, Nekritz E, Charron E, Matthay K, Hertz N, Onar-Thomas A, Shokat K, Weiss W, Hanaford A, Raabe E, Eberhart C, Griesinger A, Donson A, Hoffman L, Amani V, Birks D, Gajjar A, Handler M, Mulcahy-Levy J, Foreman N, Olow AK, Dasgupta T, Yang X, Mueller S, Hashizume R, Kolkowitz I, Weiss W, Broniscer A, Resnick AC, Sievert AJ, Nicolaides T, Prados MD, Berger MS, Gupta N, James CD, Haas-Kogan DA, Flores C, Pham C, Dietl SM, Snyder D, Sanchez-Perez L, Bigner D, Sampson J, Mitchell D, Prakash V, Batanian J, Guzman M, Geller T, Pham CD, Wolfl M, Pei Y, Flores C, Snyder D, Bigner DD, Sampson JH, Wechsler-Reya RJ, Mitchell DA, Van Ommeren R, Venugopal C, Manoranjan B, Beilhack A, McFarlane N, Hallett R, Hassell J, Dunn S, Singh S, Dasgupta T, Olow A, Yang X, Hashizume R, Mueller S, Riedel S, Nicolaides T, Kolkowitz I, Weiss W, Prados M, Gupta N, James CD, Haas-Kogan D, Zhao H, Li L, Picotte K, Monoranu C, Stewart R, Modzelewska K, Boer E, Picard D, Huang A, Radiloff D, Lee C, Dunn S, Hutt M, Nazarian J, Dietl S, Price A, Lim KJ, Warren K, Chang H, Eberhart CG, Raabe EH, Persson A, Huang M, Chandler-Militello D, Li N, Vince GH, Berger M, James D, Goldman S, Weiss W, Lindquist R, Tate M, Rowitch D, Alvarez-Buylla A, Hoffman L, Donson A, Eyrich M, Birks D, Griesinger A, Amani V, Handler M, Foreman N, Meijer L, Walker D, Grundy R, O'Dowd S, Jaspan T, Schlegel PG, Dineen R, Fotovati A, Radiloff D, Coute N, Triscott J, Chen J, Yip S, Louis D, Toyota B, Hukin J, Weitzel D, Rassekh SR, Singhal A, Dunham C, Dunn S, Ahsan S, Hanaford A, Taylor I, Eberhart C, Raabe E, Sun YG, Ashcraft K, Stiles C, Han L, Zhang K, Chen L, Shi Z, Pu P, Dong L, Kang C, Cordero F, Lewis P, Liu C, Hoeman C, Schroeder K, Allis CD, Becher O, Gururangan S, Grant G, Driscoll T, Archer G, Herndon J, Friedman H, Li W, Kurtzberg J, Bigner D, Sampson J, Mitchell D, Yadavilli S, Kambhampati M, Becher O, MacDonald T, Bellamkonds R, Packer R, Buckley A, Nazarian J, DeWire M, Fouladi M, Stewart C, Wetmore C, Hawkins C, Jacobs C, Yuan Y, Goldman S, Fisher P, Rodriguez R, Rytting M, Bouffet E, Khakoo Y, Hwang E, Foreman N, Gilbert M, Gilbertson R, Gajjar A, Saratsis A, Yadavilli S, Wetzel W, Snyder K, Kambhampati M, Hall J, Raabe E, Warren K, Packer R, Nazarian J, Thompson J, Griesinger A, Foreman N, Spazojevic I, Rush S, Levy JM, Hutt M, Karajannis MA, Shah S, Eberhart CG, Raabe E, Rodriguez FJ, Gump J, Donson A, Tovmasyan A, Birks D, Handler M, Foreman N, Hankinson T, Torchia J, Khuong-Quang DA, Ho KC, Picard D, Letourneau L, Chan T, Peters K, Golbourn B, Morrissy S, Birks D, Faria C, Foreman N, Taylor M, Rutka J, Pfister S, Bouffet E, Hawkins C, Batinic-Haberle I, Majewski J, Kim SK, Jabado N, Huang A, Ladner T, Tomycz L, Watchmaker J, Yang T, Kaufman L, Pearson M, Dewhirst M, Ogg RJ, Scoggins MA, Zou P, Taherbhoy S, Jones MM, Li Y, Glass JO, Merchant TE, Reddick WE, Conklin HM, Gholamin S, Gajjar A, Khan A, Kumar A, Tye GW, Broaddus WC, Van Meter TE, Shih DJH, Northcott PA, Remke M, Korshunov A, Mitra S, Jones DTW, Kool M, Pfister SM, Taylor MD, Mille F, Levesque M, Remke M, Korshunov A, Izzi L, Kool M, Richard C, Northcott PA, Taylor MD, Pfister SM, Charron F, Yu F, Masoud S, Nguyen B, Vue N, Schubert S, Tolliday N, Kong DS, Sengupta S, Weeraratne D, Schreiber S, Cho YJ, Birks D, Jones K, Griesinger A, Amani V, Handler M, Vibhakar R, Achrol A, Foreman N, Brown R, Rangan K, Finlay J, Olch A, Freyer D, Bluml S, Gate D, Danielpour M, Rodriguez J, Shae JJ, Kim GB, Levy R, Bannykh S, Breunig JJ, Town T, Monje-Deisseroth M, Cho YJ, Weissman I, Cheshier S, Buczkowicz P, Rakopoulos P, Bouffet E, Morrison A, Bartels U, Becher O, Hawkins C, Dey A, Kenney A, Van Gool S, Pauwels F, De Vleeschouwer S, Barszczyk M, Buczkowicz P, Castelo-Branco P, Mack S, Nethery-Brokx K, Morrison A, Taylor M, Dirks P, Tabori U, Hawkins C, Chandramohan V, Keir ST, Bao X, Pastan IH, Kuan CT, Bigner DD, Bender S, Jones D, Kool M, Sturm D, Korshunov A, Lichter P, Pfister SM, Chen M, Lu J, Wang J, Keir S, Zhang M, Zhao S, Mook R, Barak L, Lyerly HK, Chen W, Ramachandran C, Nair S, Escalon E, Khatib Z, Quirrin KW, Melnick S, Kievit F, Stephen Z, Wang K, Silber J, Ellenbogen R, Zhang M, Hutzen B, Studebaker A, Bratasz A, Powell K, Raffel C, Guo C, Chang CC, Wortham M, Chen L, Kernagis D, Qin X, Cho YW, Chi JT, Grant G, McLendon R, Yan H, Ge K, Papadopoulos N, Bigner D, He Y, Cristiano B, Venkataraman S, Birks DK, Alimova I, Harris PS, Dubuc A, Taylor MD, Foreman NK, Vibhakar R, Ichimura K, Fukushima S, Totoki Y, Suzuki T, Mukasa A, Saito N, Kumabe T, Tominaga T, Kobayashi K, Nagane M, Iuchi T, Mizoguchi M, Sasaki T, Tamura K, Sugiyama K, Narita Y, Shibui S, Matsutani M, Shibata T, Nishikawa R, Northcott P, Zichner T, Jones D, Kool M, Jager N, Feychting M, Lannering B, Tynes T, Wesenberg F, Hauser P, Ra YS, Zitterbart K, Jabado N, Chan J, Fults D, Mueller S, Grajkowska W, Lichter P, Korbel J, Pfister S, Kool M, Jones DTW, Jaeger N, Northcott PA, Pugh T, Hovestadt V, Markant SL, Esparza LA, Bourdeaut F, Remke M, Taylor MD, Cho YJ, Pomeroy SL, Schueller U, Korshunov A, Eils R, Wechsler-Reya RJ, Lichter P, Pfister SM, Keir S, Pegram C, Lipp E, Rasheed A, Chandramohan V, Kuan CT, Kwatra M, Yan H, Bigner D, Chornenkyy Y, Buczkowicz P, Agnihotri S, Becher O, Hawkins C, Rogers H, Mayne C, Kilday JP, Coyle B, Grundy R, Sun T, Warrington N, Luo J, Brooks M, Dahiya S, Sengupta R, Rubin J, Erdreich-Epstein A, Robison N, Ren X, Zhou H, Ji L, Margo A, Jones D, Pfister S, Kool M, Sposto R, Asgharzadeh S, Clifford S, Gustafsson G, Ellison D, Figarella-Branger D, Doz F, Rutkowski S, Lannering B, Pietsch T, Broniscer A, Tatevossian R, Sabin N, Klimo P, Dalton J, Lee R, Gajjar A, Ellison D, Garzia L, Dubuc A, Pitcher G, Northcott P, Mariampillai A, Chan T, Skowron P, Wu X, Yao Y, Hawkins C, Peacock J, Zayne K, Croul S, Rutka J, Kenney A, Huang A, Yang V, Baylin S, Salter M, Taylor M, Ward S, Sengupta R, Rubin J, Garzia L, Morrissy S, Skowron P, Jelveh S, Lindsay P, Largaespada D, Collier L, Dupuy A, Hill R, Taylor M, Lulla RR, Laskowski J, Fangusaro J, DiPatri AJ, Alden T, Vanin EF, Tomita T, Goldman S, Soares MB, Rajagopal MU, Lau LS, Hathout Y, Gordish-Dressman H, Rood B, Datar V, Bochare S, Singh A, Khatau S, Fangusaro J, Goldman S, Lulla R, Rajaram V, Gopalakrishnan V, Morfouace M, Shelat A, Jaccus M, Freeman B, Zindy F, Robinson G, Guy K, Stewart C, Gajjar A, Roussel M, Krebs S, Chow K, Yi Z, Brawley V, Ahmed N, Gottschalk S, Lerner R, Harness J, Yoshida Y, Santos R, Torre JDL, Nicolaides T, Ozawa T, James D, Petritsch C, Vitte J, Chareyre F, Stemmer-Rachamimov A, Giovannini M, Hashizume R, Yu-Jen L, Tom M, Ihara Y, Huang X, Waldman T, Mueller S, Gupta N, James D, Shevtsov M, Yakovleva L, Nikolaev B, Dobrodumov A, Onokhin K, Bychkova N, Mikhrina A, Khachatryan W, Guzhova I, Martynova M, Bystrova O, Ischenko A, Margulis B, Martin A, Nirschl C, Polanczyk M, Cohen K, Pardoll D, Drake C, Lim M, Crowther A, Chang S, Yuan H, Deshmukh M, Gershon T, Meyerowitz JG, Gustafson WC, Nekritz EA, Swartling F, Shokat KM, Ruggero D, Weiss WA, Bergthold G, Rich B, Bandopadhayay P, Chan J, Santaga S, Hoshida Y, Golub T, Tabak B, Ferrer-Luna R, Grill J, Wen PY, Stiles C, Kieran M, Ligon K, Beroukhim R, Lulla RR, Laskowski J, Gireud M, Fangusaro J, Goldman S, Gopalakrishnan V, Merino D, Shlien A, Pienkowska M, Tabori U, Gilbertson R, Malkin D, Mueller S, Hashizume R, Yang X, Kolkowitz I, Olow A, Phillips J, Smirnov I, Tom M, Prados M, Berger M, Gupta N, Haas-Kogan D, Beez T, Sarikaya-Seiwert S, Janssen G, Felsberg J, Steiger HJ, Hanggi D, Marino AM, Baryawno N, Johnsen JI, Ostman A, Wade A, Engler JR, Robinson AE, Phillips JJ, Witt H, Sill M, Mack SC, Wani KM, Lambert S, Tzaridis T, Bender S, Jones DT, Milde T, Northcott PA, Kool M, von Deimling A, Kulozik AE, Witt O, Lichter P, Collins VP, Aldape K, Taylor MD, Korshunov A, Pfister SM, Hatcher R, Das C, Datar V, Taylor P, Singh A, Lee D, Fuller G, Ji L, Fangusaro J, Rajaram V, Goldman S, Eberhart C, Gopalakrishnan V, Griveau A, Lerner R, Ihrie R, Sugiarto S, Ihara Y, Reichholf B, Huillard E, Mcmahon M, James D, Phillips J, Buylla AA, Rowitch D, Petritsch C, Snuderl M, Batista A, Kirkpatrick N, de Almodovar CR, Riedemann L, Knevels E, Schmidt T, Peterson T, Roberge S, Bais C, Yip S, Hasselblatt M, Rossig C, Ferrara N, Klagsbrun M, Duda D, Fukumura D, Xu L, Carmeliet P, Jain R, Nguyen A, Pencreach E, Lasthaus C, Lobstein V, Guerin E, Guenot D, Entz-Werle N, Diaz R, Golbourn B, Faria C, Shih D, MacKenzie D, Picard D, Bryant M, Smith C, Taylor M, Huang A, Rutka J, Gromeier M, Desjardins A, Sampson JH, Threatt SJE, Herndon JE, Friedman A, Friedman HS, Bigner DD, Cavalli FMG, Morrissy AS, Li Y, Chu A, Remke M, Thiessen N, Mungall AJ, Bader GD, Malkin D, Marra MA, Taylor MD, Manoranjan B, Wang X, Hallett R, Venugopal C, Mack S, McFarlane N, Nolte S, Scheinemann K, Gunnarsson T, Hassell J, Taylor M, Lee C, Triscott J, Foster C, Dunham C, Hawkins C, Dunn S, Singh S, McCrea HJ, Bander E, Venn RA, Reiner AS, Iorgulescu JB, Puchi LA, Schaefer PM, Cederquist G, Greenfield JP, Tsoli M, Luk P, Dilda P, Hogg P, Haber M, Ziegler D, Mack S, Agnihotri S, Witt H, Shih D, Wang X, Ramaswamy V, Zayne K, Bertrand K, Massimi L, Grajkowska W, Lach B, Gupta N, Weiss W, Guha A, Zadeh G, Rutka J, Korshunov A, Pfister S, Taylor M, Mack S, Witt H, Jager N, Zuyderduyn S, Nethery-Brokx K, Garzia L, Zayne K, Wang X, Barszczyk M, Wani K, Bouffet E, Weiss W, Hawkins C, Rutka J, Bader G, Aldape K, Dirks P, Pfister S, Korshunov A, Taylor M, Engler J, Robinson A, Wade A, Molinaro A, Phillips J, Ramaswamy V, Remke M, Bouffet E, Faria C, Shih D, Gururangan S, McLendon R, Schuller U, Ligon K, Pomeroy S, Jabado N, Dunn S, Fouladi M, Rutka J, Hawkins C, Tabori U, Packer R, Pfister S, Korshunov A, Taylor M, Faria C, Dubuc A, Golbourn B, Diaz R, Agnihotri S, Sabha N, Luck A, Leadly M, Reynaud D, Wu X, Remke M, Ramaswamy V, Northcott P, Pfister S, Croul S, Kool M, Korshunov A, Smith C, Taylor M, Rutka J, Pietsch T, Doerner E, Muehlen AZ, Velez-Char N, Warmuth-Metz M, Kortmann R, von Hoff K, Friedrich C, Rutkowski S, von Bueren A, Lu YJ, James CD, Hashizume R, Mueller S, Phillips J, Gupta N, Sturm D, Northcott PA, Jones DTW, Korshunov A, Picard D, Lichter P, Huang A, Pfister SM, Kool M, Ward J, Teague C, Shriyan B, Grundy R, Rahman R, Taylor K, Mackay A, Morozova O, Butterfield Y, Truffaux N, Philippe C, Vinci M, de Torres C, Cruz O, Mora J, Hargrave D, Puget S, Yip S, Jones C, Grill J, Smith S, Ward J, Tan C, Grundy R, Rahman R, Bjerke L, Mackay A, Nandhabalan M, Burford A, Jury A, Popov S, Bax D, Carvalho D, Taylor K, Vinci M, Bajrami I, McGonnell I, Lord C, Reis R, Hargrave D, Ashworth A, Workman P, Jones C, Carvalho D, Mackay A, Burford A, Bjerke L, Chen L, Kozarewa I, Lord C, Ashworth A, Hargrave D, Reis R, Jones C, Marigil M, Jauregui PJ, Alonso M, Chan TS, Hawkins C, Picard D, Henkin J, Huang A, Trubicka J, Kucharczyk M, Pelc M, Chrzanowska K, Ciara E, Perek-Polnik M, Grajkowska W, Piekutowska-Abramczuk D, Jurkiewicz D, Luczak S, Borucka-Mankiewicz M, Kowalski P, Krajewska-Walasek M, de Mola RML, Laskowski J, Fangusaro J, Costa FF, Vanin EF, Goldman S, Soares MB, Lulla RR, Mann A, Venugopal C, Vora P, Singh M, van Ommeren R, McFarlane N, Manoranjan B, Qazi M, Scheinemann K, MacDonald P, Delaney K, Whitton A, Dunn S, Singh S, Sievert A, Lang SS, Boucher K, Madsen P, Slaunwhite E, Choudhari N, Kellet M, Storm P, Resnick A, Agnihotri S, Burrell K, Fernandez N, Golbourn B, Clarke I, Barszczyk M, Sabha N, Dirks P, Jones C, Rutka J, Zadeh G, Hawkins C, Murphy B, Obad S, Bihannic L, Ayrault O, Zindy F, Kauppinen S, Roussel M, Golbourn B, Agnihotri S, Cairns R, Mischel P, Aldape K, Hawkins C, Zadeh G, Rutka J, Rush S, Donson A, Kleinschmidt-DeMasters B, Bemis L, Birks D, Chan M, Smith A, Handler M, Foreman N, Gronych J, Jones DTW, Zuckermann M, Hutter S, Korshunov A, Kool M, Ryzhova M, Reifenberger G, Pfister SM, Lichter P, Jones DTW, Hovestadt V, Picelli S, Wang W, Northcott PA, Kool M, Jager N, Reifenberger G, Rutkowski S, Pietsch T, Sultan M, Yaspo ML, Landgraf P, Eils R, Korshunov A, Zapatka M, Pfister SM, Radlwimmer B, Lichter P, Huang Y, Mao H, Wang Y, Kogiso M, Zhao X, Baxter P, Man C, Wang Z, Zhou Y, Li XN, Chung AH, Crabtree D, Schroeder K, Becher OJ, Panosyan E, Wang Y, Lasky J, Liu Z, Zhao X, Wang Y, Mao H, Huang Y, Kogiso M, Baxter P, Adesina A, Su J, Picard D, Huang A, Perlaky L, Chintagumpala M, Lau C, Blaney S, Li XN, Huang M, Persson A, Swartling F, Moriarity B. Abstracts. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not047] [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: 11/13/2022] Open
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Persson A, Falk J, Berge J, Jackowski C. Atlanto-axial rotatory subluxations in postmortem CT: Radiologists be aware of a common pitfall. Forensic Sci Int 2013; 225:9-14. [DOI: 10.1016/j.forsciint.2013.01.001] [Citation(s) in RCA: 10] [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: 01/29/2012] [Revised: 10/04/2012] [Accepted: 01/04/2013] [Indexed: 11/30/2022]
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Lathen G, Lindholm S, Lenz R, Persson A, Borga M. Automatic Tuning of Spatially Varying Transfer Functions for Blood Vessel Visualization. IEEE Trans Vis Comput Graph 2012; 18:2345-2354. [PMID: 26357142 DOI: 10.1109/tvcg.2012.203] [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] [Indexed: 06/05/2023]
Abstract
Computed Tomography Angiography (CTA) is commonly used in clinical routine for diagnosing vascular diseases. The procedure involves the injection of a contrast agent into the blood stream to increase the contrast between the blood vessels and the surrounding tissue in the image data. CTA is often visualized with Direct Volume Rendering (DVR) where the enhanced image contrast is important for the construction of Transfer Functions (TFs). For increased efficiency, clinical routine heavily relies on preset TFs to simplify the creation of such visualizations for a physician. In practice, however, TF presets often do not yield optimal images due to variations in mixture concentration of contrast agent in the blood stream. In this paper we propose an automatic, optimization-based method that shifts TF presets to account for general deviations and local variations of the intensity of contrast enhanced blood vessels. Some of the advantages of this method are the following. It computationally automates large parts of a process that is currently performed manually. It performs the TF shift locally and can thus optimize larger portions of the image than is possible with manual interaction. The method is based on a well known vesselness descriptor in the definition of the optimization criterion. The performance of the method is illustrated by clinically relevant CT angiography datasets displaying both improved structural overviews of vessel trees and improved adaption to local variations of contrast concentration.
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Affiliation(s)
- G Lathen
- Center for Medical Image Science and Visualization (CMIV), Link¨oping University, Sweden.
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Miroshnikova Y, Acerbi I, Ilkhanizadeh S, Paszek M, Persson A, Weaver V. 159 The Role of the Biophysical Properties of the Glycocalyx and Extracellular Matrix Tension in Enhancing Glioma Cell Invasion. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70859-6] [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: 10/28/2022]
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Schwenke J, Lorek E, Rakowski R, He X, Kvennefors A, Mikkelsen A, Rudawski P, Heyl CM, Maximov I, Pettersson SG, Persson A, L'Huillier A. Digital in-line holography on amplitude and phase objects prepared with electron beam lithography. J Microsc 2012; 247:196-201. [PMID: 22670851 DOI: 10.1111/j.1365-2818.2012.03632.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J Schwenke
- Division of Atomic Physics, Lund University, SE-221 00 Lund, Sweden
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Zhu L, Liao S, Child M, Zhang J, Persson A, Sevinsky H, Eley T, Xu X, Krystal M, Farajallah A, McGrath D, Molina JM, Bertz R. Pharmacokinetics and inhibitory quotient of atazanavir/ritonavir versus lopinavir/ritonavir in HIV-infected, treatment-naive patients who participated in the CASTLE Study. J Antimicrob Chemother 2011; 67:465-8. [DOI: 10.1093/jac/dkr490] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Furnari F, Fenton T, Nathanson D, de Alberquerque CP, Kuga D, Wanami A, Dang J, Yang H, Tanaka K, Gao L, Oba-Shinjo S, Uno M, Inda MDM, Bachoo R, James CD, DePinho R, Vandenberg S, Zhou H, Marie S, Mischel P, Cavenee W, Szerlip N, Pedraza A, Huse J, Mikkelsen T, Brennan C, Szerlip N, Castellani RJ, Ivanova S, Gerzanich VV, Simard JM, Ito M, See W, Mukherjee J, Ohba S, Tan IL, Pieper RO, Lukiw WJ, Culicchia F, Pogue A, Bhattacharjee S, Zhao Y, Proescholdt MA, Merrill M, Storr EM, Lohmeier A, Brawanski A, Abraham S, Jensen R, Khatua S, Gopal U, Du J, He F, Golub T, Isaacs JS, Dietrich J, Kalogirou-Valtis Y, Ly I, Scadden D, Proschel C, Mayer-Proschel M, Rempel SA, Schultz CR, Golembieski W, Brodie C, Mathew LK, Skuli N, Mucaj V, Imtiyaz HZ, Venneti S, Lal P, Zhang Z, Davuluri RV, Koch C, Evans S, Simon MC, Ranganathan P, Clark P, Salamat S, Kuo JS, Kalejta RF, Bhattacharjee B, Renzette N, Moser RP, Kowalik TF, McFarland BC, Ma JY, Langford CP, Gillespie GY, Yu H, Zheng Y, Nozell SE, Huszar D, Benveniste EN, Lawrence JE, Cook NJ, Rovin RA, Winn RJ, Godlewski JA, Ogawa D, Bronisz A, Lawler S, Chiocca EA, Lee SX, Wong ET, Swanson KD, Liu KW, Feng H, Bachoo R, Kazlauskas A, Smith EM, Symes K, Hamilton RL, Nagane M, Nishikawa R, Hu B, Cheng SY, Silber J, Jacobsen A, Ozawa T, Harinath G, Brennan CW, Holland EC, Sander C, Huse JT, Sengupta R, Dubuc A, Ward S, Yang L, Northcott P, Kroll K, Taylor M, Wechsler-Reya R, Rubin J, Chu WT, Lee HT, Huang FJ, Aldape K, Yao J, Steeg PS, Lu Z, Xie K, Huang S, Sim H, Agudelo-Garcia PA, Hu B, Viapiano MS, Hu B, Agudelo-Garcia PA, Saldivar J, Sim H, Dolan C, Mora M, Nuovo G, Cole S, Viapiano MS, Stegh AH, Ryu MJ, Liu Y, Du J, Zhong X, Marwaha S, Li H, Wang J, Salamat S, Chang Q, Zhang J, Ng HK, Yang L, Poon WS, Zhou L, Pang JC, Chan A, Didier S, Kwiatkowska A, Ennis M, Fortin S, Rushing E, Eschbacher J, Tran N, Symons M, Roldan G, McIntyre JB, Easaw J, Magliocco A, Wykosky J, Cavenee W, Furnari F, Lu D, Mreich E, Chung S, Teo C, Wheeler H, McDonald KL, Lawn S, Forsyth P, Sonabend AM, Lei L, Kennedy B, Soderquist C, Guarnieri P, Leung R, Yun J, Sisti J, Castelli M, Bruce S, Bruce R, Ludwig T, Rosenfeld S, Bruce JN, Canoll P, Lamszus K, Schulte A, Gunther HS, Riethdorf S, Phillips HS, Westphal M, Siegal T, Zrihan D, Granit A, Lavon I, Singh M, Chandra J, Ogawa D, Nakashima H, Godlewski J, Chiocca AE, Kapoor GS, Poptani H, Ittyerah R, O'Rourke DM, Sadraei NH, Burgett M, Ahluwalia M, Tipps R, Khosla D, Weil R, Nowacki A, Prayson R, Shi T, Gladson C, Moeckel S, Meyer K, Bosserhoff A, Spang R, Leukel P, Vollmann A, Jachnick B, Stangl C, Proescholdt M, Bogdahn U, Hau P, Kaur G, Sun M, Kaur R, Bloch O, Jian B, Parsa AT, Hossain A, Shinojima N, Gumin J, Feng G, Lang FF, Li L, Yang CR, Chakraborty S, Hatanpaa K, Chauncey S, Jiwani A, Habib A, Nguyen T, Nakashima H, Chiocca EA, Munson J, Machaidze R, Kaluzova M, Bellamkonda R, Hadjipanayis CG, Zhang Y, McFarland B, Bredel M, Benveniste EN, Lee SH, Zerrouqi A, Khwaja F, Devi NS, Van Meir EG, Haseley A, Boone S, Wojton J, Yu L, Kaur B, Wojton JA, Naduparambil J, Denton N, Chakravarti A, Kaur B, Conrad CA, Wang X, Sheng X, Nilsson C, Marshall AG, Emmett MR, Hu Y, Mark L, Zhou YHZ, Dhruv H, McDonough W, Tran N, Armstrong B, Tuncali S, Eschbacher J, Kislin K, Berens M, Plas D, Gallo C, Stringer K, Kendler A, McPherson C, Castelli MA, Ellis JA, Assanah M, Bruce JN, Canoll P, Ogden A, Liang J, Piao Y, deGroot JF, Gordon N, Patel D, Chakravarti A, Palanichamy K, Hervey-Jumper S, Wang A, He X, Zhu T, Heth J, Muraszko K, Fan X, Nakashima H, Nguyen T, Chiocca EA, Liu WM, Huang P, Rani S, Stettner MR, Jerry S, Dai Q, Kappes J, Tipps R, Gladson CL, Chakravarty D, Pedraza A, Koul D, Alfred Yung WK, Brennan CW, Jensen SA, Luciano J, Calvert A, Nagpal V, Stegh A, Kang SH, Yu MO, Lee MG, Chi SG, Chung YG, Cooper MK, Valadez JG, Grover VK, Kouri FM, Chin L, Stegh AH, Ahluwalia MS, Khosla D, Weil RJ, McGraw M, Huang P, Prayson R, Nowacki A, Barnett GH, Gladson C, Kang C, Zou J, Lan F, Yue X, Shi Z, Zhang K, Han L, Pu P, Seaman BF, Tran ND, McDonough W, Dhruv H, Kislin K, Berens M, Battiste JD, Sirasanagandla S, Maher EA, Bachoo R, Sugiarto S, Persson A, Munoz EG, Waldhuber M, Vandenberg S, Stallcup W, Philips J, Berger MS, Bergers G, Weiss WA, Petritsch C. CELL BIOLOGY AND SIGNALING. Neuro Oncol 2011; 13:iii10-iii25. [PMCID: PMC3199169 DOI: 10.1093/neuonc/nor148] [Citation(s) in RCA: 1] [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: 10/22/2023] Open
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Persson A, Langen PL, Ditlevsen P, Vinther BM. The influence of precipitation weighting on interannual variability of stable water isotopes in Greenland. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010jd015517] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Dunet V, Dabiri A, Allenbach G, Goyeneche Achigar A, Waeber B, Feihl F, Heinzer R, Prior JO, Van Velzen JE, Schuijf JD, De Graaf FR, De Graaf MA, Schalij MJ, Kroft LJ, De Roos A, Jukema JW, Van Der Wall EE, Bax JJ, Lankinen E, Saraste A, Noponen T, Klen R, Teras M, Kokki T, Kajander S, Pietila M, Ukkonen H, Knuuti J, Pazhenkottil AP, Nkoulou RN, Ghadri JR, Herzog BA, Buechel RR, Kuest SM, Wolfrum M, Gaemperli O, Husmann L, Kaufmann PA, Andreini D, Pontone G, Mushtaq S, Antonioli L, Bertella E, Formenti A, Cortinovis S, Ballerini G, Fiorentini C, Pepi M, Koh AS, Flores JS, Keng FYJ, Tan RS, Chua TSJ, Pontone G, Andreini D, Bertella E, Mushtaq S, Annoni AD, Tamborini G, Fusari M, Ballerini G, Bartorelli AL, Pepi M, Ewe SH, Ng ACT, Delgado V, Schuijf J, Van Der Kley F, Colli A, De Weger A, Marsan NA, Schalij MJ, Bax JJ, Yiu KH, Ng AC, Delgado V, Ewe SH, Van Der Kley F, De Weger A, Kroft LJ, De Roos A, Schuijf JD, Bax JJ, Timmer SAJ, Knaapen P, Germans T, Dijkmans PA, Lubberink M, Ten Berg 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Carvalho M, Leite D, Deckers JW, Gama V, De Graaf MA, Fernandez Y, Van Velzen JE, Ciarka A, Schalij MJ, Kroft LJ, De Roos A, Jukema JW, Van Der Wall EE, Schuijf JD, Bax JJ, Veltman CE, Mena E, De Graaf FR, Van Werkhoven JM, Jukema JW, Kroft LJ, De Roos A, Van Der Wall EE, Bax JJ, Schuijf JD, Ten Kate GJR, Neefjes LA, Giamouzis G, Rossi A, Weustink AC, Moelker A, Nieman K, Mollet NR, Krestin GP, Sijbrands EJ, De Feyter PJ, Mlynarski R, Mlynarska A, Tziolas N, Wilczek J, Sosnowski M, De Araujo Goncalves P, Sousa PJ, Marques H, O'neill J, Pisco J, Brito J, Cale R, Gaspar A, Georgoulias P, Machado FP, Roquette J, Alonso Tello A, Rodriguez Palomares JF, Llibre Pallares C, Abdul-Jawad Altisent O, Cuellar Calabria H, Mahia Casado P, Gonzalez-Alujas MT, Candell J, Karayannis G, Evangelista Masip A, Garcia-Dorado Garcia D, Tekabe Y, Shen X, Li Q, Luma J, Weisenberger D, Schmidt AM, Haubner R, Johnson L, Chamaidi A, Sleiman L, Thorn S, Hasu M, Thabet M, Dasilva JN, Dekemp RA, Beanlands RS, Whitman SC, Genovesi D, Giorgetti A, Zavos N, Gimelli A, Cannizzaro G, Giubbini R, Bertagna F, Fagioli G, Rossi M, Bonini R, Marzullo P, Paterson CA, Smith SA, Koutrakis K, Small AD, Goodfield NER, Martin W, Nekolla S, Sherif H, Saraste A, Reder S, Yu M, Schwaiger M, Gimelli A, Sitafidis G, Genovesi D, Kusch A, Giorgetti A, Marzullo P, Chen J, Chen C, Li D, Zou J, Lloyd MS, Cao K, Skoularigis J, Williams SP, Mcardle JR, Colice G, Lankford A, Kajdasz DK, Reed CR, Smith SA, Motherwell DW, Rice A, Paterson CA, Triposkiadis F, Small AD, Mccurrach GM, Goodfield NER, Cobbe SM, Petrie MC, Martin W, Ewe SH, Boogers MJ, Dibbets-Schneider P, Van Bommel RJ, Radovanovic S, Delgado V, Al Younis I, Van Der Hiel B, Schalij MJ, Van Der Wall E, Bax JJ, Mirza T, Raza M, Hashemizadeh H, Pollice PP, Djokovic A, Bonifazi MB, Pollice FP, Ferreira MJ, Santos L, Ramos D, Cunha MJ, Albuquerque A, Moreira A, Costa G, Providencia LA, Simic DV, Singh N, Krishna BA, Leccisotti L, Perna F, Lago M, Leo M, Pelargonio G, Bencardino G, Narducci ML, Casella M, Krotin M, Bellocci F, Giordano A, Kirac S, Yaylali O, Serteser M, Yaylali T, Okizaki A, Urano Y, Nakayama M, Ishitoya S, Savic-Radojevic A, Sato J, Ishikawa Y, Sakaguchi M, Nakagami N, Watanabe K, Aburano T, Solav SV, Bhandari R, Burrell S, Dorbala S, Pljesa-Ercegovac M, Leccisotti L, Bruno I, Caldarella C, Collarino A, Mattoli MV, Stefanelli A, Cannarile A, Maggi F, Giordano A, Soukhov V, Zdravkovic M, Bondarev S, Yalfimov A, Low CS, Notghi A, O'brien J, Khan M, Priyadharshan PP, Chandok G, Aziz T, Avison M, Saponjski J, Smith RA, Bulugahapitya DS, Vakhtangadze T, Todua F, Baramia M, Antelava G, Roche NC, Paule P, Kerebel S, Gil JM, Jelic S, Fourcade L, Tzonevska A, Tzvetkov K, Atanasova M, Parvanova V, Chakarova A, Piperkova E, Aktas A, Bahceci T, Yaman G, Simic T, Cinar A, Kocabas B, Kavak K, Gencoglu A, Muderrisoglu H, De Haan S, Knaapen P, Harms HJ, Lubberink M, Beek AM, Eckardt R, Lammertsma AA, Van Rossum AC, Allaart CP, Entok E, Simsek S, Akcay B, Ak I, Vardareli E, Stachura M, Kwasiborski PJ, Kjeldsen BJ, Horszczaruk GJ, Komar E, Cwetsch A, Nasr GM, Sliem H, Hayes Brown K, Alexander S, Green J, Zraik B, Jain S, Andersen LI, Aldaas F, Collado F, Alhaji M, Morales Demori R, Doukky R, Falcao A, Chalela WA, Azouri LO, Almeida ADJ, Ramires JAF, Haghfelt T, Meneghetti JC, Siqueira ME, Vieira E, Kelendjian J, Oliveira M, Alves F, Smanio P, Balogh I, Kerecsen G, Marosi E, Grupe P, Szelid ZS, Al-Mallah M, Sattar A, Swadia T, Chattahi J, Qureshi W, Khalid F, Peix A, Cabrera LO, Gonzalez A, Johansen A, Padron K, Carrillo R, Mena E, Fernandez Y, Hechavarria S, Rodriguez L, Takamura K, Fujimoto S, Nakanishi R, Yamashina S, Hesse B, Namiki A, Yamazaki J, Koshino K, Fukuda H, Hashikawa Y, Teramoto N, Hikake M, Ishikane S, Ikeda T, Iida H, Pena H, Dey T, Wieczorek H, Bippus R, Backus BE, Romijn RL, Verzijlbergen JF, Aach T, Takahashi Y, Oriuchi N, Higashino H, Cantinho G, Endo K, Mochizuki T, Murase K, Baali A, Moreno R, Chau M, Rousseau H, Nicoud F, Dolliner P, Brammen L, Wilk M, Steurer G, Traub-Weidinger T, Ubl P, Schaffarich P, Dobrozemsky G, Staudenherz A, Ozgen Kiratli M, Temelli B, Kanat NB, Aksoy T, Srour Y, Slavich GA, Piccoli G, Puppato M, Grillone S, Gasparini D, Danad I, Raijmakers PG, Appelman YE, Harms HJ, Van Kuijk C, Godinho F, Hoekstra OS, Lammertsma AA, Lubberink M, Van Rossum AC, Knaapen P, Dunet V, Perruchoud S, Poitry-Yamate C, Lepore M, Gruetter R, Zafrir N, Pedrazzini T, Prior JO, Anselm D, Anselm A, Atkins H, Renaud J, Dekemp R, Burwash I, Guo A, Williams K, Gutstein A, Beanlands R, Glover C, Vilardi I, Zangheri B, Calabrese L, Romano P, Bruno A, Barreiro Perez M, Martin Fernandez M, Fernandez Cimadevilla OC, Mats I, Leon Duran D, Florez Munoz JP, Velasco Alonso E, Luyando LH, Uusitalo VA, Kajander S, Saraste A, Luotolahti M, Wendelin-Saarenhovi M, Sundell J, Battler A, Raitakari O, Knuuti J, Mlynarska A, Mlynarski R, Wilczek J, Sosnowski M, Huidu S, Gadiraju R, Ghesani M, Uddin Q, Solodky A, Wosnitzer B, Takahashi N, Alhaj E, Legasto A, Abiri B, Elsaban K, El Khouly T, El Kammash T, Al Ghamdi A, Hommel H, Sari E, Feuchtner G, Pachinger O, Friedrich G, Mlynarska A, Mlynarski R, Wilczek J, Sosnowski M, Purvis JA, Hughes SM, Kyung Deok B, Singh N, Bon Seung K, Sang Geun Y, Chang Min D, Gwan Hong M, Vara A, Peters AM, De Belder A, Nair S, Ryan N, James R, Dizdarevic S, Depuey G, Friedman M, Wray R, Old R, Babla H, Chuanyong B, Maddahi J, Tragardh Johansson E, Sjostrand K, Edenbrandt L, Aguade-Bruix S, Cuberas-Borros G, Pizzi MN, Sabate-Fernandez M, De Leon G, Garcia-Dorado D, Castell-Conesa J, Candell-Riera J, Casset-Senon D, Edjlali-Goujon M, Alison D, Delhommais A, Cosnay P, Low CS, Notghi A, O'brien J, Tweddel AC, Bingham N, O Neil P, Harbinson M, Lindner O, Burchert W, Schaefers M, Marcassa C, Campini R, Calza P, Zoccarato O, Kisko A, Kmec J, Babcak M, Vereb M, Vytykacova M, Cencarik J, Gazdic P, Stasko J, Abreu A, Pereira E, Oliveira L, Colarinha P, Veloso V, Enriksson I, Proenca G, Delgado P, Rosario L, Sequeira J, Kosa I, Vassanyi I, Egyed CS, Kozmann GY, Morita S, Nanasato M, Nanbu I, Yoshida Y, Hirayama H, Allam A, Sharef A, Shawky I, Farid M, Mouden M, Ottervanger JP, Timmer JR, De Boer MJ, Reiffers S, Jager PL, Knollema S, Nasr GM, Mohy Eldin M, Ragheb M, Casans-Tormo I, Diaz-Exposito R, Hurtado-Mauricio FJ, Ruano R, Diego M, Gomez-Caminero F, Albarran C, Martin De Arriba A, Rosero A, Lopez R, Martin Luengo C, Garcia-Talavera JR, Laitinen IEK, Rudelius M, Weidl E, Henriksen G, Wester HJ, Schwaiger M, Pan XB, Schindler T, Quercioli A, Zaidi H, Ratib O, Declerck JM, Alexanderson Rosas E, Jacome R, Jimenez-Santos M, Romero E, Pena-Cabral MA, Meave A, Gonzalez J, Rouzet F, Bachelet L, Alsac JM, Suzuki M, Louedec L, Petiet A, Chaubet F, Letourneur D, Michel JB, Le Guludec D, Aktas A, Cinar A, Yaman G, Bahceci T, Kavak K, Gencoglu A, Jimenez-Heffernan A, Sanchez De Mora E, Lopez-Martin J, Lopez-Aguilar R, Ramos C, Salgado C, Ortega A, Sanchez-Gonzalez C, Roa J, Tobaruela A, Nesterov SV, Turta O, Maki M, Han C, Knuuti J, Daou D, Tawileh M, Chamouine SO, Coaguila C, Aguade-Bruix S, Mariscal-Labrador E, Cuberas-Borros G, Sabate-Fernandez M, Pizzi MN, Kisiel-Gonzalez N, Garcia-Dorado D, Castell-Conesa J, Candell-Riera J, Daou D, Tawileh M, Coaguila C, De Araujo Goncalves P, Sousa PJ, Marques H, O'neill J, Pisco J, Cale R, Brito J, Gaspar A, Machado FP, Roquette J, Alexanderson Rosas E, Jimenez-Santos M, Martinez M, Melendez G, Kimura E, Romero E, Pena-Cabral MA, Jacome R, Ochoa JM, Meave A, Alessio AM, Patel A, Lautamaki R, Bengel FM, Bassingthwaighte JB, Caldwell JH, Rahbar K, Seifarth H, Schafers M, Stegger L, Spieker T, Hoffmeier A, Maintz D, Scheld H, Schober O, Weckesser M, Aoki H, Matsunari I, Kajinami K, Martin Fernandez M, Barreiro Perez M, Fernandez Cimadevilla OV, Leon Duran D, Velasco Alonso E, Florez Munoz JP, Luyando LH, Ghadri JR, Pazhenkottil AP, Nkoulou RN, Husmann L, Buechel RR, Herzog BA, Wolfrum M, Gaemperli O, Templin C, Kaufmann PA, De Graaf FR, Schuijf JD, Veltman CE, Van Velzen JE, Kroft LJ, De Roos A, Reiber JHC, Jukema JW, Van Der Wall EE, Bax JJ, Venuraju S, Yerramasu A, Atwal S, Lahiri A, Kunimasa T, Shiba M, Ishii K, Aikawa J, Van Velzen JE, Schuijf JD, De Graaf FR, Kroner ESJ, Kroft LJ, De Roos A, Schalij MJ, Jukema JW, Van Der Wall EE, Bax JJ, Pontone G, Andreini D, Bertella E, Mushtaq S, Formenti A, Annoni AD, Ballerini G, Fiorentini C, Bartorelli AL, Pepi M, Ho KT, Yong QW, Chua KC, Panknin C, Roos CJ, Van Werkhoven JM, Schuijf JD, Van Velzen JE, Witkowska-Grzeslo AJ, Boogers MJ, Kroft LJ, De Roos A, Jukema JW, Bax JJ, Yerramasu A, Venuraju S, Anand DV, Atwal S, Dey D, Berman D, Lahiri A, De Graaf FR, Schuijf JD, Veltman CE, Van Werkhoven JM, Van Velzen JE, Kroft LJ, De Roos A, Jukema JW, Van Der Wall EE, Bax JJ, Mut F, Giubbini R, Lusa L, Massardo T, Iskandrian A, Dondi M, Sato A, Kakefuda Y, Ojima E, Adachi T, Atsumi A, Ishizu T, Seo Y, Hiroe M, Aonuma K, Kruk M, Pracon R, Kepka C, Pregowski J, Kowalewska A, Pilka M, Opolski M, Michalowska I, Dzielinska Z, Demkow M, Stoll V, Sabharwal N, Chakera A, Ormerod O, Fernandes H, Bernardes M, Martins E, Oliveira P, Vieira T, Terroso G, Oliveira A, Faria T, Ventura F, Pereira J, Fukuzawa S, Inagaki M, Sugioka J, Ikeda A, Okino S, Maekawa J, Uchiyama T, Kamioka N, Ichikawa S, Afshar M, Alvi R, Aguilar N, Ippili R, Shaqra H, Bella J, Bhalodkar N, Dos Santos A, Daicz M, Cendoya LO, Marrero HG, Casuscelli J, Embon M, Vera Janavel G, Duronto E, Gurfinkel EP, Cortes CM, Takeishi Y, Nakajima K, Yamasaki Y, Nishimura T, Hayes Brown K, Collado F, Alhaji M, Green J, Alexander S, Vashistha R, Jain S, Aldaas F, Shanes J, Doukky R, Ashikaga K, Akashi YJ, Uemarsu M, Kamijima R, Yoneyama K, Omiya K, Miyake Y, Brodov Y, Venuraju S, Yerramasu A, Raval U, Lahiri A, Berezin A, Seden V, Koretskaya E, Berezin A, Panasenko TA, Matsuo S, Nakajima K, Kinuya S, Veltman CE, Boogers MJ, Chen J, Delgado V, Van Bommel RJ, Van Der Hiel B, Dibbets-Schneider P, Van Der Wall EE, Garcia EV, Bax JJ, Rutten-Vermeltfoort I, Gevers MMJ, Verhoeven B, Dijk Van AB, Raaijmakers E, Raijmakers PGHM, Engvall JE, Gjerde M, De Geer J, Olsson E, Quick P, Persson A, Mazzanti M, Marini M, Pimpini L, Perna GP, Marciano C, Gargiulo P, Galderisi M, D'amore C, Savarese G, Casaretti L, Paolillo S, Cuocolo A, Perrone Filardi P, Thompson RC, Al-Amoodi M, Thompson EC, Kennedy K, Bybee KA, Mcghie AI, O'keefe JH, Bateman TM, Van Der Palen RLF, Mavinkurve-Groothuis AM, Bulten B, Bellersen L, Van Laarhoven HWM, Kapusta L, De Geus-Oei LF, Pollice PP, Bonifazi MB, Pollice FP, Clements IP, Hodge DO, Scott CG, Daou D, Tawileh M, Coaguila C, De Ville De Goyet M, Brichard B, Pirotte T, Moniotte S, Tio RA, Elvan A, Dierckx RAIO, Slart RHJA, Furuhashi T, Moroi M, Hase H, Joki N, Masai H, Kunimasa T, Nakazato R, Fukuda H, Sugi K, Kryczka K, Kaczmarska E, Kepka C, Dzielinska Z, Petryka J, Mazurkiewicz L, Kruk M, Pregowski J, Demkow M, Ruzyllo W, Smanio P, Vieira Segundo E, Siqueira M, Kelendjian J, Ribeiro J, Alaca J, Oliveira M, Alves F, Peovska I, Maksimovic J, Vavlukis M, Kostova N, Pop Gorceva D, Majstorov V, Zdraveska M, Hussain S, Djearaman M, Hoey E, Morus L, Erinfolami O, Macnamara A, Kepka C, Kruk M, Pregowski J, Opolski MP, Pracon R, Michalowska I, Ruzyllo W, Witkowski A, Demkow M, Berti V, Ricci F, Gallicchio R, Acampa W, Cerisano G, Vigorito C, Sciagra' R, Pupi A, Cuocolo A, Nasr GM, Sliem H, Collado FM, Alhaji M, Schmidt S, Maheshwari A, Kiriakos R, Hayes Brown K, Vashistha R, Mwansa V, Shanes J, Doukky R, Ljubojevic S, Sedej S, Holzer M, Marsche G, Marijanski V, Kockskaemper J, Pieske B, Alexanderson Rosas E, Jacome R, Jimenez-Santos M, Romero E, Pena-Cabral MA, Ochoa JM, Ricalde A, Alexanderson G, Meave A, Mohani A, Khanna P, Liu Y, Sinusas A, Lee F, Pinas VA, Van Eck-Smit BLF, Verberne HJ, Lammertsma AA, De Bruin CM, Windhorst AD, Pena H, Guilhermina G, Wilk M, Srour Y, Godinho F, Jimenez-Angeles L, Ruiz De Jesus O, Yanez-Suarez O, Vallejo E, Reyes E, Chan M, Hossen ML, Underwood SR, Karu A, Bokhari S, Aguade-Bruix S, Cuberas-Borros G, Pineda V, Gracia-Sanchez LM, Pizzi MN, Garcia-Burillo A, Garcia-Dorado D, Castell-Conesa J, Candell-Riera J, Zavadovskiy K, Lishmanov YU, Saushkin W, Kovalev I, Chernishov A, Pontone G, Andreini D, Cortinovis S, Bertella E, Mushtaq S, Annoni A, Formenti A, Bartorelli AL, Fiorentini C, Pepi M, Tarkia M, Saraste A, Saanijoki T, Oikonen V, Savunen T, Green MA, Strandberg M, Teras M, Knuuti J, Roivainen A, Gaeta MC, Fernandez Y, Artigas C, Deportos J, Geraldo L, Flotats A, La Delfa V, Carrio I, Wong YY, Lubberink M, Ruiter G, Knaapen P, Raijmakers P, Laarse WJ, Vonk-Noordegraaf A, Izquierdo Gomez MM, Lacalzada Almeida J, Barragan Acea A, De La Rosa Hernandez A, Juarez Prera R, Blanco Palacios G, Bonilla Arjona JA, Jimenez Rivera JJ, Iribarren Sarrias JL, Laynez Cerdena I, Dedic A, Rossi A, Ten Kate GJR, Dharampal A, Moelker A, Galema TW, Mollet N, De Feyter PJ, Nieman K, Andreini D, Pontone G, Mushtaq S, Formenti A, Bertella E, Annoni A, Ballerini G, Fiorentini C, Pepi M, Andreini D, Pontone G, Mushtaq S, Bartorelli AL, Trabattoni D, Bertella E, Annoni A, Formenti A, Fiorentini C, Pepi M, Broersen A, Frenay M, Boogers MM, Kitslaar PH, Van Velzen JE, Schuijf JD, Dijkstra J, Bax JJ, Reiber JHC, Pontone G, Andreini D, Mushtaq S, Bertella E, Annoni DA, Muratori M, Fusari M, Ballerini G, Bartorelli AL, Pepi M, Masai H, Moroi M, Johki N, Kunimasa T, Tokue M, Nakazato R, Furuhashi T, Fukuda H, Hase H, Sugi K, Dharampal AS, Weustink AC, Rossi A, Neefjes LAE, Papadopoulou SL, Chen C, Mollet NRA, Boersma EH, Krestin GP, De Feyter PJ, Purvis JA, Sharma D, Hughes SM, Zafrir N, Maddahi J, Berman DS, Taillefer R, Udelson J, Devine M, Lazewatsky J, Bhat G, Washburn D, Yerramasu A, Patel D, Mazurek T, Tandon S, Bansal S, Inzucchi S, Staib L, Davey J, Chyun D, Young L, Wackers F, Fukuda H, Moroi M, Masai H, Kunimasa T, Nakazato R, Furuhashi T, Sugi K, Harbinson MT, Wells G, Dougan J, Borges-Neto S, Phillips H, Farzaneh-Far A, Starr Z, Shaw LK, Fiuzat M, O'connor C, Henzlova M, Duvall WL, Levine A, Baber U, Croft L, Sahni S, Sethi S, Hermann L, Allam AH, Wann LS, Thompson RC, Nureldin A, Gomaa A, Badr I, Soliman MAT, Hany HAR, Sutherland ML, Thomas GS, Yiu KH, Schuijf J, Van Werkhoven JM, De Graaf F, Pazhenkottil A, Jukema JW, Bax JJ, De Roos A, Kroft LJ, Kaufmann PA, Kroner ESJ, Van Velzen JE, Boogers MJ, Siebelink HMJ, Schalij MJ, Kroft LJ, De Roos A, Reiber JH, Schuijf JD, Bax JJ, Ayub M, Naveed T, Azhar M, Van Tosh A, Faber TL, Votaw JR, Reichek N, Pulipati B, Palestro C, Nichols KJ, Einstein AJ, Khawaja T. Abstracts. Eur Heart J Suppl 2011. [DOI: 10.1093/eurheartj/sur013] [Citation(s) in RCA: 1] [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: 11/13/2022]
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Grufman H, Edsfeldt A, Persson A, Nitulescu M, Nilsson M, Nilsson J, Goncalves I. 718 STRUCTURE AND CYTOKINE PATTERN OF CAROTID PLAQUES IN ELDERLY PATIENTS. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70719-x] [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: 11/30/2022]
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Edsfeldt A, Dias N, Elmståhl B, Müller M, Berg K, Nitulescu M, Persson A, Ekberg O, Gonçalves I. 819 LOW CAROTID CALCIUM SCORE IS ASSOCIATED WITH HIGHER LEVELS OF GLYCOSAMINOGLYCANS TNF-ALPHA AND PTH IN HUMAN CAROTID PLAQUES. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70820-0] [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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Halldin C, Stone-Elander S, Thorell JO, Persson A, Sedvall G. 11C-labelling of the benzodiazepine antagonist RO 15-1788, in two different positions, and its main metabolite RO 15-3890. J Labelled Comp Radiopharm 2011. [DOI: 10.1002/jlcr.25802601161] [Citation(s) in RCA: 1] [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: 11/12/2022]
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Abstract
In 2008, the Swiss Federal AIDS Commission released a statement concluding that people with HIV who are on treatment and have an undetectable viral load are non-infectious and can safely practice unprotected sex with their HIV-negative partner under certain conditions. Contradicting over 25 years of HIV prevention messages, the so called Swiss Consensus Statement sparked a polarised international debate. One key concern is that the Statement will be misinterpreted to imply that everybody on treatment can have unprotected sex. Therefore, critics warn against any departure from the emphasis on condoms as the most effective prevention method. Given this concern, it is useful to reflect on what relevance the Swiss Statement may have for those concerned. This paper draws on qualitative interviews with HIV-positive heterosexuals and HIV-negative partners in Australia. Conducted both before and after the release of the Statement, these interviews revealed that sexual decision-making was not based solely on calculations of risk, but shaped by complex emotions and relationship priorities. The interviews also revealed that participants were sceptical towards the Statement's prevention message. These findings call into question the central concerns that drive this debate.
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Affiliation(s)
- A Persson
- National Centre in HIV Social Research, University of New South Wales, Sydney, NSW, Australia.
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Genoud G, Wojda F, Burza M, Persson A, Wahlström CG. Active control of the pointing of a multi-terawatt laser. Rev Sci Instrum 2011; 82:033102. [PMID: 21456713 DOI: 10.1063/1.3556438] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The beam pointing of a multi-terawatt laser [corrected] is stabilized on a millisecond time scale using an active control system. Two piezo mirrors, two position sensing detectors, and a computer based optimization program ensure that both near- and far-field are stable, even during single shot operation. A standard deviation for the distribution of laser shots of 2.6 μ rad is achieved.
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Affiliation(s)
- G Genoud
- Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden
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Cederwall B, Moradi FG, Bäck T, Johnson A, Blomqvist J, Clément E, de France G, Wadsworth R, Andgren K, Lagergren K, Dijon A, Jaworski G, Liotta R, Qi C, Nyakó BM, Nyberg J, Palacz M, Al-Azri H, Algora A, de Angelis G, Ataç A, Bhattacharyya S, Brock T, Brown JR, Davies P, Di Nitto A, Dombrádi Z, Gadea A, Gál J, Hadinia B, Johnston-Theasby F, Joshi P, Juhász K, Julin R, Jungclaus A, Kalinka G, Kara SO, Khaplanov A, Kownacki J, La Rana G, Lenzi SM, Molnár J, Moro R, Napoli DR, Singh BSN, Persson A, Recchia F, Sandzelius M, Scheurer JN, Sletten G, Sohler D, Söderström PA, Taylor MJ, Timár J, Valiente-Dobón JJ, Vardaci E, Williams S. Evidence for a spin-aligned neutron-proton paired phase from the level structure of (92)Pd. Nature 2011; 469:68-71. [PMID: 21179086 DOI: 10.1038/nature09644] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Accepted: 11/02/2010] [Indexed: 11/09/2022]
Abstract
Shell structure and magic numbers in atomic nuclei were generally explained by pioneering work that introduced a strong spin-orbit interaction to the nuclear shell model potential. However, knowledge of nuclear forces and the mechanisms governing the structure of nuclei, in particular far from stability, is still incomplete. In nuclei with equal neutron and proton numbers (N = Z), enhanced correlations arise between neutrons and protons (two distinct types of fermions) that occupy orbitals with the same quantum numbers. Such correlations have been predicted to favour an unusual type of nuclear superfluidity, termed isoscalar neutron-proton pairing, in addition to normal isovector pairing. Despite many experimental efforts, these predictions have not been confirmed. Here we report the experimental observation of excited states in the N = Z = 46 nucleus (92)Pd. Gamma rays emitted following the (58)Ni((36)Ar,2n)(92)Pd fusion-evaporation reaction were identified using a combination of state-of-the-art high-resolution γ-ray, charged-particle and neutron detector systems. Our results reveal evidence for a spin-aligned, isoscalar neutron-proton coupling scheme, different from the previous prediction. We suggest that this coupling scheme replaces normal superfluidity (characterized by seniority coupling) in the ground and low-lying excited states of the heaviest N = Z nuclei. Such strong, isoscalar neutron-proton correlations would have a considerable impact on the nuclear level structure and possibly influence the dynamics of rapid proton capture in stellar nucleosynthesis.
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Affiliation(s)
- B Cederwall
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden.
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Burguillos MA, Hajji N, Englund E, Persson A, Cenci AM, Machado A, Cano J, Joseph B, Venero JL. Apoptosis-inducing factor mediates dopaminergic cell death in response to LPS-induced inflammatory stimulus: evidence in Parkinson's disease patients. Neurobiol Dis 2011; 41:177-88. [PMID: 20850531 DOI: 10.1016/j.nbd.2010.09.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Revised: 09/06/2010] [Accepted: 09/09/2010] [Indexed: 10/19/2022] Open
Abstract
We show that intranigral lipopolysaccharide (LPS) injection, which provokes specific degeneration of DA neurons, induced caspase-3 activation in the rat ventral mesencephalon, which was mostly associated with glial cells. In contrast, nigral DA neurons exhibited AIF nuclear translocation in response to LPS. A significant decrease of the Bcl-2/Bax ratio in nigral tissue after LPS injection was observed. We next developed an in vitro co-culture system with the microglial BV2 and the DA neuronal MN9D murine cell lines. The silencing of caspase-3 or AIF by small interfering RNAs exclusively in the DA MN9D cells demonstrated the key role of AIF in the LPS-induced death of DA cells. In vivo chemical inhibition of caspases and poly(ADP-ribose)polymerase-1, an upstream regulator of AIF release and calpain, proved the central role of the AIF-dependent pathway in LPS-induced nigral DA cell death. We also observed nuclear translocation of AIF in the ventral mesencephalon of Parkinson's disease subjects.
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Affiliation(s)
- M A Burguillos
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Spain
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Persson A, Molin G, Weibull C. Physiological and Morphological Changes Induced by Nutrient Limitation of Pseudomonas fluorescens 378 in Continuous Culture. Appl Environ Microbiol 2010; 56:686-92. [PMID: 16348142 PMCID: PMC183406 DOI: 10.1128/aem.56.3.686-692.1990] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [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
Pseudomonas fluorescens 378 was studied in continuous culture at a dilution rate of 0.05 or 0.15 h and under a limitation of carbon/energy, nitrogen, phosphorus, iron(III), or oxygen. Cultures were examined for nutritional consumption, production of biosurfactant AP-6 and lipase, and electron microscopy morphology. Morphological features were lysis and plasmolysis of the cells, vacuoles in the cells, granules in cell nuclei, and DNA coagulation during transmission electron microscopy preparation. Biosurfactant and lipase production were lost after 8 to 15 retention times, but under iron limitation and at low dilution rate they were maintained for more than 30 retention times. Consumption of nutrients varied between different cultures. Between 2.4 and 6.0 g of succinic acid per g (dry weight) was consumed; the highest value was obtained under phosphorus limitation. The uptake of nitrogen was mostly about 0.16 g/g (dry weight), and that of phosphorus varied between 13 and 58 mg/g (dry weight). Phosphorus-limited cells reduced their phosphorus consumption by at least 50% compared with other limitations. Cell morphology varied among different cultures. Up to 25% cell lysis occurred at the higher dilution rate. The frequencies of plasmolysis varied between 0 and 85%. Granules in nuclei were found in 65 to 100% of the cells. Vacuoles appeared mostly in low numbers, but at the lower dilution rate under phosphorus or iron limitation the frequencies increased to between 25 and 85%. At high dilution rate, the DNA coagulated in 30 to 70% of the cells. Multivariate data analysis demonstrated a general difference between the two tested dilution rates; i.e., both nutritional and morphological features differed more between the two tested dilution rates than between the different limitations. Cultures at the lower dilution rate changed more with time; this was especially pronounced for phosphorus or iron limitation. The data analysis also showed a correlation between plasmolysis or vacuoles in the cells and an increased carbon uptake under phosphorus limitation.
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Affiliation(s)
- A Persson
- Department of Applied Microbiology, Chemical Center, Lund University, S-221 00 Lund, and Department of Microbiology, Lund University, S-223 62 Lund, Sweden
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Eriksson P, Mohammed AA, De Geer J, Kihlberg J, Persson A, Granerus G, Nystrom F, Smedby O. Non-invasive investigations of potential renal artery stenosis in renal insufficiency. Nephrol Dial Transplant 2010; 25:3607-14. [DOI: 10.1093/ndt/gfq259] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [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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Zachrisson H, Engström E, Engvall J, Wigström L, Smedby O, Persson A. Soft tissue discrimination ex vivo by dual energy computed tomography. Eur J Radiol 2010; 75:e124-8. [PMID: 20219308 DOI: 10.1016/j.ejrad.2010.02.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2009] [Revised: 02/01/2010] [Accepted: 02/02/2010] [Indexed: 11/26/2022]
Abstract
PURPOSE Dual Energy Computed Tomography (DECT) may provide additional information about the chemical composition of tissues compared to examination with a single X-ray energy. The aim of this in vitro study was to test whether combining two energies may significantly improve the detection of soft tissue components commonly present in arterial plaques. METHODS Tissue samples of myocardial and psoas muscle, venous and arterial thrombus as well as fat from different locations were scanned using a SOMATOM Definition Dual Source CT system (Siemens AG, Medical Solutions, Forchheim, Germany) with simultaneous tube voltages of 140 and 80 kV. The attenuation (Hounsfield units, HU) at 80 and 140 kV was measured in representative regions of interest, and the association between measured HU values and tissue types was tested with logistic regression. RESULTS The combination of two energy levels (80 and 140 kV) significantly improved (p<0.001) the ability to correctly classify venous thrombus vs arterial thrombus, myocardium or psoas; arterial thrombus vs myocardium or psoas; myocardium vs psoas; as well as the differentiation between fat tissue from various locations. Single energy alone was sufficient for distinguishing fat from other tissues. CONCLUSION DECT offers significantly improved in vitro differentiation between soft tissues occurring in plaques. If this corresponds to better tissue discrimination in vivo needs to be clarified in future studies.
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Affiliation(s)
- H Zachrisson
- Center for Medical Image Science and Visualization, Linköping University, Linköping University Hospital, SE-581 85 Linköping, Sweden.
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Persson A, Lindwall C, Curtis MA, Kuhn HG. Expression of ezrin radixin moesin proteins in the adult subventricular zone and the rostral migratory stream. Neuroscience 2010; 167:312-22. [PMID: 20109539 DOI: 10.1016/j.neuroscience.2010.01.035] [Citation(s) in RCA: 18] [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: 11/03/2009] [Revised: 01/15/2010] [Accepted: 01/19/2010] [Indexed: 12/24/2022]
Abstract
Continuous proliferation occurs in the adult subventricular zone (SVZ) of the lateral ventricles throughout life. In the SVZ, progenitor cells differentiate into neuroblasts, which migrate tangentially along the rostral migratory stream (RMS) to reach their final destination in the olfactory bulb. These progenitor cells mature and integrate into the existing neural network of the olfactory bulb. Long distance migration of neuroblasts in the RMS requires a highly dynamic cytoskeleton with the ability to respond to surrounding stimuli. Radixin is a member of the ERM (Ezrin, Radixin, Moesin) family, which connect the actin cytoskeleton to the extracellular matrix through transmembrane proteins. The membrane-cytoskeleton linker proteins of the ERM family may regulate cellular events with a high demand on cytoskeleton plasticity, such as cell motility. Recently, specific expression of the ERM protein ezrin was shown in the RMS. Radixin however has not been characterized in this region. Here we used immunohistochemistry and confocal microscopy to examine the expression of radixin in the different cell types of the adult subventricular zone niche and in the RMS. Our findings indicate that radixin is strongly expressed in neuroblasts of the adult RMS and subventricular zone, and also in Olig2-positive cells. We also demonstrate the presence of radixin in the cerebral cortex, striatum, cerebellum, thalamus, hippocampus as well as the granular and periglomerular layers of the olfactory bulb. Our studies also reveal the localization of radixin in neurosphere culture studies and we reveal the specificity of our labeling using Western blotting. The expression pattern demonstrated here suggests a role for radixin in neuronal migration and differentiation in the adult RMS. Understanding how adult neuronal migration is regulated is of importance for the development of new therapeutic interventions using endogenous repair for neurodegenerative diseases.
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Affiliation(s)
- A Persson
- Center for Brain Repair and Rehabilitation, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
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Wojda F, Cassou K, Genoud G, Burza M, Glinec Y, Lundh O, Persson A, Vieux G, Brunetti E, Shanks RP, Jaroszynski D, Andreev NE, Wahlström CG, Cros B. Laser-driven plasma waves in capillary tubes. Phys Rev E Stat Nonlin Soft Matter Phys 2009; 80:066403. [PMID: 20365282 DOI: 10.1103/physreve.80.066403] [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] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 11/03/2009] [Indexed: 05/29/2023]
Abstract
The excitation of plasma waves over a length of up to 8 cm is demonstrated using laser guiding of intense laser pulses through hydrogen-filled glass capillary tubes. The plasma waves are diagnosed by spectral analysis of the transmitted laser radiation. The dependence of the spectral redshift-measured as a function of filling pressure, capillary tube length, and incident laser energy-is in excellent agreement with simulation results. The longitudinal accelerating field inferred from the simulations is in the range of 1-10 GV/m.
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Affiliation(s)
- F Wojda
- Laboratoire Physique Gaz et Plasmas, CNRS-Université Paris-Sud 11, Orsay Cedex, France
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Fordell T, Miranda M, Persson A, L'Huillier A. Carrier-envelope phase stabilization of a multi-millijoule, regenerative-amplifier-based chirped-pulse smplifier system. Opt Express 2009; 17:21091-21097. [PMID: 19997348 DOI: 10.1364/oe.17.021091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This article reports on the successful stabilization of the carrier-envelope phase of a 1-kHz laser system that includes a large grating stretcher, a regenerative amplifier, a multipass amplifier and a grating compressor. Phase stability for pulse energies up to 6 mJ is demonstrated using electronic feedback to the oscillator locking electronics as well as feedback via an acousto-optic programmable dispersive filter.
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Affiliation(s)
- T Fordell
- 1 Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden.
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Brismar TB, Dahlström N, Edsborg N, Persson A, Smedby Ö, Albiin N. Liver vessel enhancement by Gd-BOPTA and Gd-EOB-DTPA: a comparison in healthy volunteers. Acta Radiol 2009; 50:709-15. [PMID: 19701821 DOI: 10.1080/02841850903055603] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND A thorough understanding of magnetic resonance (MR) contrast media dynamics makes it possible to choose the optimal contrast media for each investigation. Differences in visualizing hepatobiliary function between Gd-BOPTA and Gd-EOB-DTPA have previously been demonstrated, but less has been published regarding differences in liver vessel visualization. PURPOSE To compare the liver vessel and liver parenchymal enhancement dynamics of Gd-BOPTA (MultiHance) and Gd-EOB-DTPA (Primovist). MATERIAL AND METHODS The signal intensity of the liver parenchyma, the common hepatic artery, the middle hepatic vein, and a segmental branch of the right portal vein was obtained in 10 healthy volunteers before contrast media administration, during arterial and portal venous phases, and 10, 20, 30, 40, and 130 min after intravenous contrast medium injection, but, due to scanner limitations, not during the hepatic venous phase. The doses of contrast media were 0.1 mmol/kg for Gd-BOPTA and 0.025 mmol/kg for Gd-EOB-DTPA. RESULTS Maximum enhancement of liver parenchyma was observed from the portal venous phase until 130 min after Gd-BOPTA administration and from 10 min to 40 min after Gd-EOB-DTPA. There was no difference in maximum enhancement of liver parenchyma between the two contrast media. When using Gd-BOPTA, the vascular contrast enhancement was still apparent 40 min after injection, but had vanished 10 min after Gd-EOB-DTPA injection. The maximum difference in signal intensity between the vessels and the liver parenchyma was significantly greater with Gd-BOPTA than with Gd-EOB-DTPA (P<0.0001). CONCLUSION At the dosage used in this study, Gd-BOPTA yields higher maximum enhancement of the hepatic artery, portal vein, and middle hepatic vein during the arterial and the portal venous phase and during the delayed phases than Gd-EOB-DTPA does, whereas there is no difference in liver parenchymal enhancement between the two contrast agents.
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Affiliation(s)
- T. B. Brismar
- Department for Clinical Science, Intervention, and Technology, Division of Radiology, Karolinska University Hospital, Stockholm, Sweden
| | - N. Dahlström
- Department of Radiology, Hudiksvall Hospital, Hudiksvall, Sweden
- Centre for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - N. Edsborg
- Department for Clinical Science, Intervention, and Technology, Division of Radiology, Karolinska University Hospital, Stockholm, Sweden
| | - A. Persson
- Centre for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Ö. Smedby
- Centre for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
- Department of Radiology (IMH), Linköping University, Linköping, Sweden
| | - N. Albiin
- Department for Clinical Science, Intervention, and Technology, Division of Radiology, Karolinska University Hospital, Stockholm, Sweden
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Shigeta M, Persson A, Viitanen M, Winblad B, Nordberg A. EEG regional changes during long-term treatment with tetrahydroaminoacridine (THA) in Alzheimer's disease. Acta Neurol Scand Suppl 2009; 149:58-61. [PMID: 8128842 DOI: 10.1111/j.1600-0404.1993.tb04258.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Three patients with Alzheimer's disease of mild type received long-term treatment with THA at doses between 40 mg to 160 mg daily. This study describes the effects of THA on EEG, seen during long-term and high dose treatments. After short-term treatment, the changes of the mean frequency in the temporal and parieto-occipital regions varied between patients, but in the frontal region a significant increase of the mean frequency was seen in all patients. The EEG improvement seen in the frontal region was more significant than that for the other regions at low dose of THA (80 mg). During long-term treatment, we observed different types of EEG changes. The early improvement seen in two patients was temporary and reverted to the pre-treatment value. In a third patient who did not show marked improvement after short-term treatment, an improvement was seen in all regions after longer treatment. Treatment with high doses of THA (120 mg or 160 mg) induced a marked increase in the mean frequency not only in the frontal region but also in the temporal and parieto-occipital regions. Higher doses of THA seem to affect larger areas of the brain than lower doses of THA.
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Affiliation(s)
- M Shigeta
- Department of Geriatric Medicine, Karolinska Institute, Huddinge University Hospital, Sweden
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Lawniczak-Jablonska K, Wolska A, Klepka M, Sadowski J, Holub-Krappe E, Persson A, Arvanitis D. Mn atoms in GaAs: first evidence for Ga interstitial site occupation. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308096608] [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: 04/03/2023] Open
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