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Park S, Ortega AN, Chen J, Mortensen K, Bustamante AV. Association of food insecurity with health, access to care, affordability of care, financial burden of care, and financial hardships among US adults during the COVID-19 pandemic. Public Health 2024; 230:183-189. [PMID: 38565064 DOI: 10.1016/j.puhe.2024.02.028] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/15/2024] [Accepted: 02/27/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVES To examine the associations between food insecurity and health, access to care, affordability of care, financial burden of care, and financial hardships among US adults during the COVID-19 pandemic and examine whether the associations were less pronounced among adults with safety nets. STUDY DESIGN We conducted a retrospective longitudinal cohort study using the 2020-2021 Medical Expenditure Panel Survey. METHODS Linear probability models were used to assess the associations between food insecurity in one year and the outcomes of interest in the following year while adjusting for baseline characteristics. We performed the analyses for the entire population and then conducted stratified analyses for adults with and without Supplemental Nutrition Assistance Program (SNAP) benefits or Medicaid coverage. RESULTS Compared with food-secure adults, food-insecure adults were 9.1 percentage points less likely to report life satisfaction and 9.9, 10.2, and 13.2 percentage points more likely to experience delays in getting medical care, postpone or forgo medical care because of cost, and struggle with paying medical bills. Food-insecure adults were 30.4, 27.2, and 23.5 percentage points more likely to face challenges in affording necessities, paying utility bills, and meeting rent or mortgage payments on time than food-secure adults. Notably, the strengths of these associations were attenuated among adults with SNAP benefits or Medicaid coverage. CONCLUSIONS Food insecurity was associated with poor health, limited access to and affordability of care, and a greater financial burden of care among US adults during the pandemic. Nevertheless, safety net programs can play a critical role in alleviating adverse consequences.
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Affiliation(s)
- S Park
- Department of Health Policy and Management, College of Health Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea; Department of Healthcare Sciences, Graduate School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea; L-HOPE Program for Community-Based Total Learning Health Systems, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - A N Ortega
- Thompson School of Social Work and Public Health, University of Hawai'i at Manoa, 2430 Campus Rd, Honolulu, HI, 96822, USA.
| | - J Chen
- Department of Health Policy and Management, School of Public Health, University of Maryland, 4200 Valley Dr, College Park, MD, 20742, USA.
| | - K Mortensen
- Department of Health Management and Policy, Hebert Business School, University of Miami, 5250 University Dr, Coral Gables, FL 33146, USA.
| | - A V Bustamante
- Department of Health Policy and Management, Fielding School of Public Health, UCLA, UCLA Latino Policy and Politics Institute, 650 Charles Young Dr. S., Los Angeles, CA, 90095, USA.
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Bartsota M, Jowett V, Manuel D, Mortensen K, Wolfenden J, Marek J, Carvalho JS. Double aortic arch: implications of antenatal diagnosis, differential growth of arches during pregnancy, associated abnormalities and postnatal outcome. Ultrasound Obstet Gynecol 2023; 62:69-74. [PMID: 36864493 DOI: 10.1002/uog.26186] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 11/22/2022] [Revised: 02/12/2023] [Accepted: 02/13/2023] [Indexed: 06/10/2023]
Abstract
OBJECTIVES To evaluate the prenatal characteristics of double aortic arch (DAA), assess the relative size of the arches and their growth during pregnancy, describe associated cardiac, extracardiac and chromosomal/genetic abnormalities and review postnatal presentation and clinical outcome. METHODS This was a retrospective cohort study of all fetuses with a confirmed diagnosis of DAA seen in five specialized referral centers in London, UK, between October 2012 and November 2019. Cases were identified from the hospitals' fetal databases. Fetal echocardiographic findings, intracardiac and extracardiac abnormalities, genetic defects, computed tomography (CT) findings and postnatal clinical presentation and outcome were evaluated. RESULTS A total of 79 fetuses with DAA were included. Of those assessed postnatally, 48.6% had an atretic left aortic arch (LAA), while 5.1% had an atretic LAA at the first fetal scan and were misdiagnosed antenatally with right aortic arch (RAA). The LAA was atretic in 55.8% of those who underwent CT. DAA was an isolated abnormality in 91.1% of cases; 8.9% of patients had an additional intracardiac abnormality and 2.5% had both intra- and extracardiac abnormalities. Among the 52 cases that underwent genetic testing, 11.5% had genetic abnormalities and, specifically, the 22q11 microdeletion was identified in 3.8% of patients. At a median follow-up of 993.5 days, 42.5% of patients had developed symptoms of tracheoesophageal compression (5.5% during the first month after birth) and 56.2% had undergone intervention. Statistical analysis using the χ-square test showed no significant relationship between morphology of DAA (patency of both aortic arches vs atretic LAA) and the need for intervention (P = 0.134), development of vascular ring symptoms (P = 0.350) or evidence of airway compression on CT (P = 0.193). CONCLUSIONS Most cases of DAA can be diagnosed easily at midgestation, as typically both arches are patent with a dominant RAA at this stage. However, we found that the LAA had become atretic in approximately half of the cases postnatally, supporting the theory of differential growth of the arches during pregnancy. DAA is usually an isolated abnormality; however, thorough assessment is required to exclude associated intra- and extracardiac anomalies and to determine the need for invasive prenatal genetic testing. Postnatally, early clinical assessment is needed and CT scan should be considered, irrespective of the presence of symptoms. © 2023 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- M Bartsota
- Brompton Centre for Fetal Cardiology, Royal Brompton Hospital, London, UK
| | - V Jowett
- Great Ormond Street Hospital, London, UK
| | - D Manuel
- Brompton Centre for Fetal Cardiology, Royal Brompton Hospital, London, UK
| | | | | | - J Marek
- Great Ormond Street Hospital, London, UK
- Institute of Cardiovascular Sciences, University College London, London, UK
| | - J S Carvalho
- Brompton Centre for Fetal Cardiology, Royal Brompton Hospital, London, UK
- Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust, London, UK
- Cardiovascular Clinical Academic Group, Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK
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Glintborg B, Hendricks O, Colic A, Lindegaard HM, Ahmed R, Loft AG, Kollerup G, Andersen M, Grydehøj J, Raun J, Thorgrimsen T, Mortensen K, Uhrenholt L, Jensen D, Ruge I, Kalisz M, Danebod K, Lomborg N, Steen Krogh N, Hetland ML. SAT0130 TREAT-TO-TARGET STRATEGY OF >8.000 PATIENTS WITH EARLY RHEUMATOID ARTHRITIS: DOES SMOKING AFFECT ACHIEVEMENT OF REMISSION ON METHOTREXATE AND TIME TO START OF FIRST BIOLOGIC? RESULTS FROM THE NATIONWIDE DANISH DANBIO REGISTRY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Smoking is a known risk factor for rheumatoid arthritis (RA). It is largely unknown whether smoking has any impact on disease activity and treatment outcomes (e.g. achieving remission on methotrexate and time to first biological disease modifying anti-rheumatic treatments (bDMARD)) in early RA with a modern treat-to-target strategy.Objectives:To explore if smoking was associated with treatment outcomes in newly diagnosed patients with RA starting first conventional synthetic (cs)DMARDs in routine care.Methods:Observational cohort study. Adult patients with RA starting first csDMARD during year 2010-2018 were identified in the Danish nationwide quality registry, DANBIO. Smoking status (current/never/previous) upon start of csDMARD (=baseline), disease activity, 1-year treatment outcomes and bDMARD treatment were retrieved from DANBIO. Data were censored Oct 2019.Impact of smoking status was explored for the following outcomes: 1) median baseline disease activity baseline, 2) remission at 1-year (logistic regression analyses), 3) time to first bDMARD (Cox-regression analyses). Regression analyses were adjusted for gender and age.Results:Among 9515 patients, 8647 (91%) had available smoking status (Current 23%/never 50%/previous 27%) and were included. Baseline disease activity was independent of smoking status (Table 1). First line csDMARD was methotrexate in 91% of patients. Compared to never smokers, the current smokers were more often men, younger and sero-positive for IgM-RF and anti-CCP.Table 1.Patient characteristics and disease activity at baseline and 1 year stratified by smoking status. Numbers are medians (IQR) unless otherwise stated.Smoking statusCurrentNeverPreviousBaselinePatient numbers, N200743082332Age, yrs58 (49-66)61 (48-71)62 (52-70)Female, %627163IgM-RF positive, %715465Anti-CCP positive, %715365DAS284.4 (3.4-5.3)4.4 (3.4-5.3)4.3 (3.3-5.3)CDAI18.7 (11.7-27.3)18.4 (10.9-27.4)18.5 (10.4-27.6)VAS patient global, mm60 (35-81)55 (30-77)55 (31-78)1 yearPatient number, N179338372053DAS282.6 (1.9-3.7)2.3 (1.7-3.4)2.5 (1.8-3.4)CDAI6.4 (2.8-12.5)4.9 (1.8-10.3)5.4 (2-10.8)DAS28-remission, %495753CDAI-remission, %273533VAS patient global, mm37 (14-67)29 (10-57)30 (11-58)DAS28-response: DAS28(CRP)≤2.6; CDAI-remission: CDAI≤2.8Never and previous smokers had higher odds of remission at 1 year’s follow-up compared to current smokers. In adjusted Cox regression analyses, baseline smoking was associated with shorter time to start of first bDMARD (Table 2).Table 2.Impact of baseline smoking status on treatment outcomesComparisonOdds Ratio (95% CI)pDAS28-remission 1 yr, yes vs. no*Never vs. current smoker1.43 (1.27;1.62)<0.001Previous vs. current1.14 (0.99;1.30)0.07CDAI remission 1 yr, yes vs. no*Never vs. current1.53 (1.34;1.75)<0.001Previous vs. current1.29 (1.11;1.50)<0.001ComparisonHazard Ratio (95% CI)pStart of bDMARD duringfollow-up**Never vs current smoker0.85 (0.76;0.96)0.006Previous vs. current1.05 (0.93;1.19)0.4*Logistic regression analyses (adjusted for gender and age)** Cox regression analyses (adjusted for gender and age)Conclusion:In this observational study of >8000 patients with RA starting a first csDMARD, current smoking was associated with lower odds of achieving remission on methotrexate and higher chance of having started bMDARD compared to never smokers. Seropositivity may be an intermediate variable. Further analyses are planned to study impact of comorbidities and other confounding factors.Acknowledgments :Thank you to all patients and departments who contribute to the DANBIO registryDisclosure of Interests: :Bente Glintborg Grant/research support from: Grants from Pfizer, Biogen and Abbvie, Oliver Hendricks Grant/research support from: Pfizer, MSD, Ada Colic Consultant of: Advisory board Sanofi, Hanne Merete Lindegaard: None declared, Rabiah Ahmed: None declared, Anne Gitte Loft Grant/research support from: Novartis, Consultant of: AbbVie, MSD, Novartis, Pfizer and UCB, Speakers bureau: AbbVie, MSD, Novartis, Pfizer and UCB, Gina Kollerup Speakers bureau: Eli Lilly, Marlene Andersen: None declared, Jolanta Grydehøj: None declared, Johnny Raun: None declared, Toke Thorgrimsen: None declared, Kasper Mortensen: None declared, Line Uhrenholt Speakers bureau: Abbvie, Eli Lilly and Novartis (not related to the submitted work), Dorte Jensen: None declared, Iben Ruge Grant/research support from: Novo Nordisk Foundation, Maren Kalisz: None declared, Kamilla Danebod: None declared, Niels Lomborg: None declared, Niels Steen Krogh: None declared, Merete L. Hetland Grant/research support from: BMS, MSD, AbbVie, Roche, Novartis, Biogen and Pfizer, Consultant of: Eli Lilly, Speakers bureau: Orion Pharma, Biogen, Pfizer, CellTrion, Merck and Samsung Bioepis
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Milano EG, Pajaziti E, Sauvage E, Taylor AM, Marek J, Mortensen K, Cook A, Schievano S, Kostolny M, Capelli C. P358Taking surgery out of reality: a repair of double outlet right ventricle planned by means of virtual reality. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez109.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- E G Milano
- University College London, Institute of Cardiovascular Science, LONDON, United Kingdom of Great Britain & Northern Ireland
| | - E Pajaziti
- University College London, Institute of Cardiovascular Science, LONDON, United Kingdom of Great Britain & Northern Ireland
| | - E Sauvage
- University College London, Institute of Cardiovascular Science, LONDON, United Kingdom of Great Britain & Northern Ireland
| | - A M Taylor
- University College London, Institute of Cardiovascular Science, LONDON, United Kingdom of Great Britain & Northern Ireland
| | - J Marek
- Great Ormond Street Hospital for Children, London, United Kingdom of Great Britain & Northern Ireland
| | - K Mortensen
- Great Ormond Street Hospital for Children, London, United Kingdom of Great Britain & Northern Ireland
| | - A Cook
- University College London, Institute of Cardiovascular Science, LONDON, United Kingdom of Great Britain & Northern Ireland
| | - S Schievano
- University College London, Institute of Cardiovascular Science, LONDON, United Kingdom of Great Britain & Northern Ireland
| | - M Kostolny
- Great Ormond Street Hospital for Children, London, United Kingdom of Great Britain & Northern Ireland
| | - C Capelli
- University College London, Institute of Cardiovascular Science, LONDON, United Kingdom of Great Britain & Northern Ireland
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Khaliqi K, Ghazal A, Azmi IDM, Amenitsch H, Mortensen K, Salentinig S, Yaghmur A. Direct monitoring of lipid transfer on exposure of citrem nanoparticles to an ethanol solution containing soybean phospholipids by combining synchrotron SAXS with microfluidics. Analyst 2017; 142:3118-3126. [PMID: 28744529 DOI: 10.1039/c7an00860k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Lipid exchange among citrem nanoparticles and an ethanol micellar solution containing soy phosphatidylcholine was investigated in situ by coupling small angle X-ray scattering with a microfluidic device. The produced soy phosphatidylcholine/citrem nanoparticles have great potential in the development of hemocompatible nanocarriers for drug delivery.
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Affiliation(s)
- K Khaliqi
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
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Cronin-Fenton D, Dalvi T, Hedgeman E, Norgaard M, Pedersen L, Mortensen K, Midta A, Shire N, Brody R, Fryzek J, Lawrence D, Rigas J, Potter D, Walker J, Mellemgaard A, Rasmussen T, Hamilton-Dutoit S, Sørensen H. An interim assessment of key biomarkers (programmed cell death receptor ligand 1 (PD-L1) expression and epidermal growth factor receptor (EGFR) in third-line therapy non-small cell lung cancer (NSCLC) patients: A Danish cohort study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw383.26] [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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Corti C, Fally M, Fabricius-Bjerre A, Mortensen K, Jensen BN, Andreassen HF, Porsbjerg C, Knudsen JD, Jensen JU. Point-of-care procalcitonin test to reduce antibiotic exposure in patients hospitalized with acute exacerbation of COPD. Int J Chron Obstruct Pulmon Dis 2016; 11:1381-9. [PMID: 27382274 PMCID: PMC4922826 DOI: 10.2147/copd.s104051] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Background This study was conducted to investigate whether point-of-care (POC) procalcitonin (PCT) measurement can reduce redundant antibiotic treatment in patients hospitalized with acute exacerbation of COPD (AECOPD). Methods One-hundred and twenty adult patients admitted with AECOPD were enrolled in this open-label randomized trial. Patients were allocated to either the POC PCT-guided intervention arm (n=62) or the control arm, in which antibiotic therapy followed local guidelines (n=58). Results The median duration of antibiotic exposure was 3.5 (interquartile range [IQR] 0–10) days in the PCT-arm vs 8.5 (IQR 1–11) days in the control arm (P=0.0169, Wilcoxon) for the intention-to-treat population. The proportion of patients using antibiotics for ≥5 days within the 28-day follow-up was 41.9% (PCT-arm) vs 67.2% (P=0.006, Fisher’s exact) in the intention-to-treat population. For the per-protocol population, the proportions were 21.1% (PCT-arm) vs 73.9% (P<0.00001, Fisher’s exact). Within 28-day follow-up, one patient died in the PCT-arm and two died in the control arm. A composite harm end point consisting of death, rehospitalization, or intensive care unit admission, all within 28 days, showed no apparent difference. Conclusion Our study shows that the implementation of a POC PCT-guided algorithm can be used to substantially reduce antibiotic exposure in patients hospitalized with AECOPD, with no apparent harm.
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Affiliation(s)
- Caspar Corti
- Department of Respiratory Medicine, Copenhagen University Hospital Bispebjerg, Copenhagen
| | - Markus Fally
- Department of Respiratory Medicine, Copenhagen University Hospital Bispebjerg, Copenhagen
| | | | - Katrine Mortensen
- Department of Respiratory Medicine, Copenhagen University Hospital Bispebjerg, Copenhagen
| | - Birgitte Nybo Jensen
- Department of Respiratory Medicine, Copenhagen University Hospital Bispebjerg, Copenhagen
| | - Helle F Andreassen
- Department of Respiratory Medicine, Copenhagen University Hospital Bispebjerg, Copenhagen
| | - Celeste Porsbjerg
- Department of Respiratory Medicine, Copenhagen University Hospital Bispebjerg, Copenhagen
| | - Jenny Dahl Knudsen
- Department of Clinical Microbiology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | - Jens-Ulrik Jensen
- Department of Respiratory Medicine, Copenhagen University Hospital Bispebjerg, Copenhagen
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Franzen K, Reppel M, Köster J, Mortensen K. Acute and chronic effects on central hemodynamics and arterial stiffness in professional rowers. Physiol Meas 2016; 37:544-53. [PMID: 26999470 DOI: 10.1088/0967-3334/37/4/544] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Controversial data exist on acute and chronic effects of competitive sports on central hemodynamics and arterial stiffness. We investigated chronic as well as acute training effects in professional rowers. The trial was planned as a non-randomized, controlled pilot-study comparing athletes and controls. 13 German national team rowers (24.1 ± 1.5 years) and 12 controls (23.8 ± 0.8 years) participated. Aortic, brachial hemodynamics and arterial stiffness were measured (Arteriograph, TensioMed(®), Hungary) before and after a standardized exercise test. Chronic heart rate (49 [Formula: see text] 2 bpm versus 70 [Formula: see text] 2 bpm, p < 0.05) as well as brachial diastolic pressure (65 [Formula: see text] 2 mmHg versus 74 [Formula: see text] 2 mmHg, p < 0.05) was significantly lower in rowers. Physical power (305 [Formula: see text] 63 versus 158 [Formula: see text] 60 W, p < 0.001) was better. Chronic aortic pulse pressure (41.6 [Formula: see text] 6.0 versus 35.2 [Formula: see text] 3.8 mmHg; p < 0.01) and AIx (9.1 [Formula: see text] 5.4 versus 7.0 [Formula: see text] 10.2; p < 0.01) were significantly higher in athletes. After the all-out test (acute effects) pulse wave velocity (rowers: 6.6 [Formula: see text] 1.2 m s(-1) versus 7.8 [Formula: see text] 1.6 m s(-1), p < 0.001; control group 6.0 [Formula: see text] 0.4 m s(-1) versus 8.0 [Formula: see text] 1.4 m s(-1), p = 0.005) and heart rate (rowers: 49 [Formula: see text] 2 bpm versus 91 [Formula: see text] 3 bpm, p < 0.001; control group 70 [Formula: see text] 2 bpm versus 92 [Formula: see text] 4 bpm, p < 0.001) increased significantly in both groups. The controls' aortic AIx (7.0 [Formula: see text] 10.2 versus 2.0 [Formula: see text] 6.0; p < 0.01) decreased significantly after exercise. Professional rowers showed higher chronic aortic pulse pressure and arterial stiffness. Given the risk associated with elevated aortic pulse pressure and AIx for development of cardiovascular diseases, longterm observations of professional rowers are needed with respect to arterial stiffness and prognosis. Furthermore the acute effects need additional research.
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Affiliation(s)
- K Franzen
- Medical Clinic III, Campus Luebeck, University Hospital Schleswig-Holstein, Luebeck, Germany
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Todd O, Sikwewa K, Kamp J, Rasmussen I, Mortensen K, Kudsk-Iversen S. Inadequate monitoring risks safety of blood transfusion in rural Zambia. Crit Care 2015. [PMCID: PMC4470669 DOI: 10.1186/cc14418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Mortensen K, Nilsson M, Slim K, Schäfer M, Mariette C, Braga M, Carli F, Demartines N, Griffin SM, Lassen K, Fearon KCF, Ljungqvist O, Lobo DN, Revhaug A. Consensus guidelines for enhanced recovery after gastrectomy: Enhanced Recovery After Surgery (ERAS®) Society recommendations. Br J Surg 2014; 101:1209-29. [PMID: 25047143 DOI: 10.1002/bjs.9582] [Citation(s) in RCA: 434] [Impact Index Per Article: 43.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/20/2014] [Accepted: 05/08/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND Application of evidence-based perioperative care protocols reduces complication rates, accelerates recovery and shortens hospital stay. Presently, there are no comprehensive guidelines for perioperative care for gastrectomy. METHODS An international working group within the Enhanced Recovery After Surgery (ERAS®) Society assembled an evidence-based comprehensive framework for optimal perioperative care for patients undergoing gastrectomy. Data were retrieved from standard databases and personal archives. Evidence and recommendations were classified according to the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) system and were discussed until consensus was reached within the group. The quality of evidence was rated 'high', 'moderate', 'low' or 'very low'. Recommendations were graded as 'strong' or 'weak'. RESULTS The available evidence has been summarized and recommendations are given for 25 items, eight of which contain procedure-specific evidence. The quality of evidence varies substantially and further research is needed for many issues to improve the strength of evidence and grade of recommendations. CONCLUSION The present evidence-based framework provides comprehensive advice on optimal perioperative care for the patient undergoing gastrectomy and facilitates multi-institutional prospective cohort registries and adequately powered randomized trials for further research.
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Affiliation(s)
- K Mortensen
- Department of Gastrointestinal and Hepatobiliary Surgery, University Hospital of Northern Norway, Tromsø, Norway
| | | | | | | | | | | | | | | | | | | | | | - K C F Fearon
- Clinical Surgery, University of Edinburgh, Royal Infirmary of Edinburgh, UK
| | - O Ljungqvist
- Department of Surgery, Örebro University Hospital, Örebro and Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - D N Lobo
- Division of Gastrointestinal Surgery, Nottingham Digestive Diseases Centre National Institute for Health Research, Biomedical Research Unit, Nottingham University Hospitals, Queen's Medical Centre, Nottingham, UK
| | - A Revhaug
- Department of Gastrointestinal and Hepatopancreaticobiliary Surgery, University Hospital of Northern Norway, Tromsø, Norway
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Rønholt S, Kirkensgaard J, Mortensen K, Knudsen J. Effect of cream cooling rate and water content on butter microstructure during four weeks of storage. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2012.10.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Stern E, Mortensen K, Franzen K, Köster J, Reichert D, Dalhoff K, Weil J, Drömann D, Reppel M. Arterielle Gefäßsteifigkeit bei pulmonaler Hypertonie. Pneumologie 2013. [DOI: 10.1055/s-0033-1344704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- E. Stern
- Medizinische Klinik 2, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
| | - K. Mortensen
- Medizinische Klinik 2, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
| | - K. Franzen
- Medizinische Klinik 2, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
| | - J. Köster
- Medizinische Klinik 2, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
| | - D. Reichert
- Medizinische Klinik 2, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
| | - K. Dalhoff
- Medizinische Klinik 3, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
| | - J. Weil
- Medizinische Klinik 2, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
| | - D. Drömann
- Medizinische Klinik 3, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
| | - M. Reppel
- Medizinische Klinik 2, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
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Gisbertz C, Fatum C, Graf T, Bode F, Reppel M, Mortensen K, Weil J. Renal sympathetic denervation significantly reduces blood pressure but not cause orthostatic dysregulation in patients with resistant hypertension. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Franzen KF, Mortensen K, Graf T, Koester J, Weil J, Reppel M. Percutaneous renal denervation (RDN) improves central hemodynamics and arterial stiffness - results of 24h ambulatory measurements. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Bukan RB, Moeller A, Henning M, Mortensen K, Klausen T, Waldau T. Significance of preadmission quality of life for mortality in the ICU: a prospective cohort study. Crit Care 2013. [PMCID: PMC3642883 DOI: 10.1186/cc12419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bode F, Himmel F, Reppel M, Mortensen K, Schunkert H, Wiegand UKH. Should all dysfunctional high-voltage leads be extracted? Results of a single-centre long-term registry. Europace 2012; 14:1764-70. [DOI: 10.1093/europace/eus202] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [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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Aydin MA, Mortensen K, Salukhe TV, Wilke I, Ortak M, Drewitz I, Hoffmann B, Mullerleile K, Sultan A, Servatius H, Steven D, von Kodolitsch Y, Meinertz T, Ventura R, Willems S. A standardized education protocol significantly reduces traumatic injuries and syncope recurrence: an observational study in 316 patients with vasovagal syncope. Europace 2012; 14:410-415. [DOI: 10.1093/europace/eur341] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Sattler K, Gradzielski M, Mortensen K, Hoffmann H. Influence of surfactant on the gelation of novel ethylene glycol esters of silicic acid. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19981021106] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [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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Baulmann J, Nürnberger J, Slany J, Schmieder R, Schmidt-Trucksäss A, Baumgart D, Cremerius P, Hess O, Mortensen K, Weber T. Arterielle Gefäßsteifigkeit und Pulswellenanalyse. Dtsch Med Wochenschr 2010; 135 Suppl 1:S4-14. [PMID: 20180172 DOI: 10.1055/s-0030-1249183] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Bernhardt AMJ, Treede H, Mortensen K, Aydin MA, Sheikhzadeh S, Rybczynski M, Mir T, Habermann C, Reichenspurner H, Kodolitsch YV. Applanation tonometry for Marfan syndrome: a novel tool to improve timing of prophylactic aortic root operations? Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1247021] [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: 10/19/2022]
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Mortensen K, Baulmann J, Rybcynski M, Reppel M, Schunkert H, von Kodolitsch Y. P4.08 AUGMENTATION INDEX AND AORTIC DISEASE IN MARFAN-LIKE SYNDROMES. Artery Res 2010. [DOI: 10.1016/j.artres.2010.10.060] [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] Open
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Angelico R, Rossi CO, Ambrosone L, Palazzo G, Mortensen K, Olsson U. Ordering fluctuations in a shear-banding wormlike micellar system. Phys Chem Chem Phys 2010; 12:8856-62. [DOI: 10.1039/b926152d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Teixeira SCM, Ankner J, Bellissent-Funel MC, Bewley R, Blakeley MP, Coates L, Dahint R, Dalgliesh R, Dencher N, Dhont J, Fischer P, Forsyth VT, Fragneto G, Frick B, Geue T, Gilles R, Gutberlet T, Haertlein M, Hauß T, Häußler W, Heller WT, Herwig K, Holderer O, Juranyi F, Kampmann R, Knott R, Kohlbrecher J, Kreuger S, Langan P, Lechner R, Lynn G, Majkrzak C, May R, Meilleur F, Mo Y, Mortensen K, Myles DAA, Natali F, Neylon C, Niimura N, Ollivier J, Ostermann A, Peters J, Pieper J, Rühm A, Schwahn D, Shibata K, Soper AK, Straessle T, Suzuki UI, Tanaka I, Tehei M, Timmins P, Torikai N, Unruh T, Urban V, Vavrin R, Weiss K, Zaccai G. New sources and instrumentation for neutrons in biology. Chem Phys 2009; 345:133-151. [PMID: 19132140 PMCID: PMC2614686 DOI: 10.1016/j.chemphys.2008.02.030] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Neutron radiation offers significant advantages for the study of biological molecular structure and dynamics. A broad and significant effort towards instrumental and methodological development to facilitate biology experiments at neutron sources worldwide is reviewed.
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Affiliation(s)
- S C M Teixeira
- Institut Laue Langevin, 6 rue Jules Horowitz, 38042 Grenoble cedex 9, France
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Lefmann K, Willendrup PK, Udby L, Lebech B, Mortensen K, Birk JO, KlenØ K, Knudsen E, Christiansen P, Saroun J, Kulda J, Filges U, Konnecke M, Tregenna-Piggott P, Peters J, Lieutenant K, Zsigmond G, Bentley P, Farhi E. Virtual experiments: the ultimate aim of neutron ray-tracing simulations. J of Neutron Res 2008. [DOI: 10.1080/10238160902819684] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Barmeyer A, Müllerleile K, Mortensen K, Meinertz T. Diastolic dysfunction in exercise and its role for exercise capacity. Heart Fail Rev 2008; 14:125-34. [PMID: 18758943 DOI: 10.1007/s10741-008-9105-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2008] [Accepted: 07/23/2008] [Indexed: 01/08/2023]
Abstract
Diastolic dysfunction is frequent in elderly subjects and in patients with left ventricular hypertrophy, vascular disease and diabetes mellitus. Patients with diastolic dysfunction demonstrate a reduced exercise capacity and might suffer from congestive heart failure (CHF). Presence of symptoms of CHF in the setting of a normal systolic function is referred to as heart failure with normal ejection fraction (HFNEF) or, if evidence of an impaired diastolic function is observed, as diastolic heart failure (DHF). Reduced exercise capacity in diastolic dysfunction results from a number of pathophysiological alterations such as slowed myocardial relaxation, reduced myocardial distensibility, elevated filling pressures, and reduced ventricular suction forces. These alterations limit the increase of ventricular diastolic filling and cardiac output during exercise and lead to pulmonary congestion. In healthy subjects, exercise training can enhance diastolic function and exercise capacity and prevent deterioration of diastolic function in the course of aging. In patients with diastolic dysfunction, exercise capacity can be enhanced by exercise training and pharmacological treatment, whereas improvement of diastolic function can only be observed in few patients.
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Affiliation(s)
- A Barmeyer
- Department of Cardiology/Angiology, Center for Cardiology and Cardiovascular Surgery, University Hospital Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.
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Teixeira S, Zaccai G, Ankner J, Bellissent-Funel M, Bewley R, Blakeley M, Callow P, Coates L, Dahint R, Dalgliesh R, Dencher N, Forsyth V, Fragneto G, Frick B, Gilles R, Gutberlet T, Haertlein M, Hauß T, Häußler W, Heller W, Herwig K, Holderer O, Juranyi F, Kampmann R, Knott R, Krueger S, Langan P, Lechner R, Lynn G, Majkrzak C, May R, Meilleur F, Mo Y, Mortensen K, Myles D, Natali F, Neylon C, Niimura N, Ollivier J, Ostermann A, Peters J, Pieper J, Rühm A, Schwahn D, Shibata K, Soper A, Strässle T, Suzuki J, Tanaka I, Tehei M, Timmins P, Torikai N, Unruh T, Urban V, Vavrin R, Weiss K. Erratum to “New sources and instrumentation for neutrons in biology” [Chem. Phys. 345 (2008) 133–151]. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.04.007] [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: 10/22/2022]
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Papadakis CM, Ivanova R, Lüdtke K, Mortensen K, Pranzas PK, Jordan R. Micellar structure of amphiphilic poly(2-oxazoline) diblock copolymers. J Appl Crystallogr 2007. [DOI: 10.1107/s0021889806056184] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Frokiær H, Mortensen K, Sorensen H, Sorensen S. Characterization of Proteintype Proteinase Inhibitors by High Performance Capillary Electrophoresis. J LIQ CHROMATOGR R T 2006. [DOI: 10.1080/10826079608006289] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- H. Frokiær
- a Department of Biochemistry and Nutrition Technical , University of Denmark , Building 224 DK-2800, Lyngby, Denmark
| | - K. Mortensen
- b Chemistry Department Royal Veterinary and Agricultural University , 40 Thorvaldsensvej DK-1871 Frederiksberg C, Denmark
| | - H. Sorensen
- b Chemistry Department Royal Veterinary and Agricultural University , 40 Thorvaldsensvej DK-1871 Frederiksberg C, Denmark
| | - S. Sorensen
- a Department of Biochemistry and Nutrition Technical , University of Denmark , Building 224 DK-2800, Lyngby, Denmark
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Mortensen K, Aydin M, Meinertz T, Schuchert A. 859 Outcome of preventive atrial stimulation algorithms in patients with coronary heart disease. Europace 2005. [DOI: 10.1016/eupace/7.supplement_1.209-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- K. Mortensen
- Universit tsklinikum Hamburg, Klinik für Kardiologie und Angiologie, Hamburg, Germany
| | - M.A. Aydin
- University hospital Hamburg-Eppendorf, Clinic for Cardiology, Heart Center, Hamburg, Germany
| | - T. Meinertz
- University hospital Hamburg-Eppendorf, Clinic for Cardiology, Heart Center, Hamburg, Germany
| | - A. Schuchert
- University hospital Hamburg-Eppendorf, Clinic for Cardiology, Heart Center, Hamburg, Germany
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Mortensen K, Aydin M, Machnik M, H mmer A, Meinertz T, Schuchert A. 523 Evaluation of Epworth sleepiness scale in a population of dual-chamber-pacemaker patients. Europace 2005. [DOI: 10.1016/eupace/7.supplement_1.153-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- K. Mortensen
- Universit tsklinikum Hamburg, Klinik für Kardiologie und Angiologie, Hamburg, Germany
| | - M.A. Aydin
- University hospital Hamburg-Eppendorf, Clinic for Cardiology, Heart Center, Hamburg, Germany
| | - M. Machnik
- University hospital Hamburg-Eppendorf, Clinic for Cardiology, Heart Center, Hamburg, Germany
| | | | - T. Meinertz
- University hospital Hamburg-Eppendorf, Clinic for Cardiology, Heart Center, Hamburg, Germany
| | - A. Schuchert
- University hospital Hamburg-Eppendorf, Clinic for Cardiology, Heart Center, Hamburg, Germany
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Aydin M, Mortensen K, Meinertz T, Schuchert A. 772 Outcome of preventive atrial stimulation algorithms in elderly patients. Europace 2005. [DOI: 10.1016/eupace/7.supplement_1.175-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- M.A. Aydin
- University-Hospital Hamburg-Eppendotf, Department of Cardiology, Hamburg, Germany
| | - K. Mortensen
- University Hospital Hamburg, Cardiology, Hamburg, Germany
| | - T. Meinertz
- University Hospital Hamburg, Cardiology, Hamburg, Germany
| | - A. Schuchert
- University Hospital Hamburg, Cardiology, Hamburg, Germany
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Papadakis CM, Rittig F, Almdal K, Mortensen K, Stĕpánek P. Collective dynamics and self-diffusion in a diblock copolymer melt in the body-centered cubic phase. Eur Phys J E Soft Matter 2004; 15:359-370. [PMID: 15647894 DOI: 10.1140/epje/i2002-10168-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2002] [Accepted: 09/23/2004] [Indexed: 05/24/2023]
Abstract
The structure and dynamics of a strongly asymmetric poly(ethylene propylene)-poly(dimethylsiloxane) (PEP-PDMS) diblock copolymer in the melt have been studied over a wide temperature range. Small-angle neutron scattering reveals that the sample exhibits two stable phases in this temperature range: Above the order-to-disorder transition temperature, it is disordered, whereas the domain structure is body-centered cubic (bcc) below, being stable down to the lowest temperatures measured. In the disordered state, dynamic light scattering (DLS) in the polarized geometry reveals the heterogeneity mode and the cluster mode. In the bcc phase, the PEP and the PDMS blocks form the micellar cores and the matrix, respectively. Here, two modes are observed in DLS, and the diffusion coefficients measured using pulsed field gradient (PFG) NMR are broadly distributed with the most probable diffusion coefficient coinciding with the slow DLS mode. We attribute the fast process in the bcc state to concentration fluctuations of the micellar cores (PEP), relaxing by mutual diffusion of the micelles with copolymers dissolved in the PDMS matrix. The slower process in the bcc state is ascribed to activated long-range self-diffusion of single copolymers from micelle to micelle through the PDMS matrix. This assignment is corroborated by the good coincidence of the reduced diffusivities with the ones from the literature. However, this mode may also be assigned to the rearrangement of entire micelles.
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Affiliation(s)
- C M Papadakis
- Fakultät für Physik und Geowissenschaften, Universität Leipzig, Linnéstr. 5, D-04103, Leipzig, Germany.
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Abstract
Endothelial cells line the inside of blood and lymphatic vessels, and cancer cells must cross this barrier, first to gain access to the circulation, and, second, to exit and metastasize. How this occurs is incompletely understood. We now demonstrate that human cancer cells are able to fuse with endothelial cells to form hybrid cells displaying proteins and chromosomal markers characteristic of both parent cells. The hybrid cells are viable and capable of undergoing mitosis. Fusions between cancer cells and endothelial cells were shown to occur both in vitro, in co-cultures of human breast cancer cells and endothelial cells, and in vivo, following intravascular dissemination of human breast cancer cells in nude mice. These observations demonstrate a new type of cancer-endothelial cell interaction that may be of fundamental importance to the process of metastasis.
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Affiliation(s)
- K Mortensen
- Department of Anatomy and Physiology, KVL, Gronnegaardsvej 7, 1870, Frederiksberg C Copenhagen, Denmark
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Schuchert A, Mortensen K, Meinertzstigators T, Bub E, Hartung W, Brau]n M, Peiffer T, Rebeski H. P-387 Comparison of triggered and triggered plus continuous pacing on the prevention of paroxysmal atrial fibrillation. Europace 2003. [DOI: 10.1016/eupace/4.supplement_2.b157-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- A. Schuchert
- Medical Clinic III University Hospital Hamburg-Eppendorf Hamburg Germany
| | - K. Mortensen
- Medical Clinic III University Hospital Hamburg-Eppendorf Hamburg Germany
| | | | - E. Bub
- Hospital Holzminden Holzminden Germany
| | - W. Hartung
- Cardiologc Center Hannover-Kirchrode Hannover Germany
| | - M. Brau]n
- Hospital Burghausen Burghausen Germany
| | - T. Peiffer
- St. Elisabeth Hospital Straubing Germany
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Schuchert A, Mortensen K, Meinertz T, Sperzel J, Siemon G, Zhang G, Konig A, Willems R. P-368 Clinical validation of a new automatic atrial capture verification algorithm. Europace 2003. [DOI: 10.1016/eupace/4.supplement_2.b152-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Affiliation(s)
- A. Schuchert
- IC III University Hospitals Hamburg Eppendorf
Hamburg Germany
| | - K. Mortensen
- IC III University Hospitals Hamburg Eppendorf
Hamburg Germany
| | - T. Meinertz
- IC III University Hospitals Hamburg Eppendorf
Hamburg Germany
| | - J. Sperzel
- Electrophysiology Kerckhoff Heart Center Bad Nauheim Germany
| | - G. Siemon
- Electrophysiology Kerckhoff Heart Center Bad Nauheim Germany
| | - G. Zhang
- CRM Research Guidant Corporation St. Paul MN United States of America
| | - A. Konig
- CRM Research Guidant Europe Diegem Belgium
| | - R. Willems
- CRM Research Guidant Europe Diegem Belgium
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Olsen LH, Mortensen K, Martinussen T, Larsson LI, Baandrup U, Pedersen HD. Increased NADPH-diaphorase activity in canine myxomatous mitral valve leaflets. J Comp Pathol 2003; 129:120-30. [PMID: 12921717 DOI: 10.1016/s0021-9975(03)00019-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Comparable pathological changes in the mitral valve have been described in dogs, pigs and human patients with myxomatous mitral valve disease (MMVD), i.e., primary mitral valve prolapse. The progressive myxomatous changes are probably a response to repeated impact on the leaflets, and endothelial stress or damage probably plays a central role in the pathogenesis. Little, however, is known about the vasoactive substances that mediate the subendothelial changes. The aim of this study was to investigate the expression of nitric oxide synthase (NOS) in canine mitral valve leaflets and to relate the findings to MMVD changes. The mitral valve was taken post mortem from 12 dogs (six males and six females) and a whole valve NADPH (the reduced form of nicotinamide-adenine dinucleotide phosphate) diaphorase (NADPH-d) reaction was performed. Macroscopical (semiquantitative) and microscopical (computer image analysis) evaluations of the staining due to NADPH-d activity were performed at four specific areas of the valve and related to microscopical signs of MMVD and gross signs of thickening or prolapse, or both. Macroscopically, the NADPH-d colour grade was correlated with the degree of MMVD (P=0.01). In addition, endothelial NADPH-d staining intensity was correlated with macroscopical signs of disease (P=0.004) as well as with collagen degeneration (P=0.008) and deposition of mucopolysaccharides (P=0.02). Age, gender and specific area of the valve did not seem to influence the NADPH-d activity. In conclusion, increased NADPH-d activity, suggesting increased NOS expression, was found in areas of the mitral valve with myxomatous changes. This indicates that nitric oxide (NO) may play a role in the pathogenesis of MMVD in dogs.
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Affiliation(s)
- L H Olsen
- Department of Anatomy and Physiology, The Royal Veterinary and Agricultural University, 7 Groennegaardsvej, DK-1870, Frederiksberg C, Denmark
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Mortensen K, Larsson LI. Effects of cytochalasin D on the actin cytoskeleton: association of neoformed actin aggregates with proteins involved in signaling and endocytosis. Cell Mol Life Sci 2003; 60:1007-12. [PMID: 12827288 DOI: 10.1007/s00018-003-3022-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cytochalasin D (CD) has been extensively used for assessing the role of the actin cytoskeleton in different biological processes. However, effects of CD have not always been consistent and CD-treated cells have been found to contain irregular spots of F-actin. By transfecting MCF-7 cells with an actin-enhanced yellow fluorescent protein fusion protein we show that, in vivo, CD induces actin aggregation de novo, while simultaneously depolymerizing preexisting actin cytoskeletal components. We also show that CD-induced actin aggregates bind the F-actin-selective drug phalloidin and associate with proteins involved in cell signaling as well as with receptors and endosomal markers (active MAP kinases, paxillin, erbB2, transferrin, Rab-5), but not with clathrin, protein kinase A, protein tyrosine phosphatase 1B, or tubulin. Thus, CD induces new sites of actin aggregation that selectively associate with several important regulatory proteins. Failure of CD to interupt a biological process may therefore not prove that the process is independent of actin aggregation.
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Affiliation(s)
- K Mortensen
- Department of Cell Biology, Institute of Anatomy and Physiology, The Royal Veterinary and Agricultural University, Gronnegaardsvej 7, 1870 Frederiksberg C, Copenhagen, Denmark
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Wignall G, Benoît H, Hashimoto T, Higgins J, King S, Lodge T, Mortensen K, Ryan A. Progress in SANS studies of polymer systems (Panel Discussion). ACTA ACUST UNITED AC 2002. [DOI: 10.1002/masy.200290014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Mortensen K, Theunissen E, Reynaers H, Kleppinger R, Almdal K. The effect of shear on the structure of thermoplastic elastomer gels. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302085550] [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: 11/11/2022] Open
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Balemba OB, Mortensen K, Semuguruka WD, Hay-Schmidt A, Johansen MV, Dantzer V. Neuronal nitric oxide synthase activity is increased during granulomatous inflammation in the colon and caecum of pigs infected with Schistosoma japonicum. Auton Neurosci 2002; 99:1-12. [PMID: 12171250 DOI: 10.1016/s1566-0702(02)00042-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Neuronal nitric oxide is a non-adrenergic non-cholinergic neurotransmitter in the enteric nervous system and plays a role in a variety of enteropathies including Crohn's and Chagas' diseases, ulcerative colitis, diabetes, atrophy and hypertrophy. The content of neuronal nitric oxide synthase (nNOS) in the colon and the caecum from pigs infected with Schistosoma japonicum was studied using immunohistochemical and histochemical staining for nNOS and nicotinamide adenine dinucleotide phosphate diaphorase (NADPH-diaphorase), respectively. In the infected pigs, lightly, moderately and less severely inflamed tissues showed increased nNOS and NADPH-diaphorase activities in nerve cell bodies and nerve fibres in the enteric plexuses compared to control pigs. There was a significant increase in the nerve cell body density of nNOS immunoreactive nerve cell bodies in the inner submucous plexus, outer submucous plexus and in the myenteric plexus. More intensely stained nerve cell bodies and varicosities were observed in tissue from prenatally infected and prenatally infected, postnatally re-infected pigs compared to postnatally infected pigs. However, the latter showed the highest numerical density of nNOS immunoreactive nerve cell bodies. Marked increases were seen in the inner submucous plexus followed by myenteric plexus, inner circular muscle, outer submucous plexus and mucous plexus. However, in very severe inflamed tissues, the number and staining intensity of nerve cell bodies and nerve fibre varicosities were reduced in plexuses located in the lesions with the inner submucous and mucous plexuses being the most affected. There was no staining in the nervous tissue within the eosinophilic cell abscesses and productive granulomas. The apparent alterations in the activities of enzymes responsible for the generation of nitric oxide (NO) show possible alterations in the NO mediated non-adrenergic non-cholinergic reflexes in the enteric nervous tissue. These alterations might contribute to impaired intestinal motility and absorption, and other pathophysiological conditions seen during S. japonicum infections.
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Affiliation(s)
- O B Balemba
- Department of Veterinary Anatomy, Sokoine University of Agriculture, Morogoro, Tanzania
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Tepe T, Schulz MF, Zhao J, Tirrell M, Bates FS, Mortensen K, Almdal K. Variable Shear-Induced Orientation of a Diblock Copolymer Hexagonal Phase. Macromolecules 2002. [DOI: 10.1021/ma00112a061] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.2] [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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44
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Hecht E, Mortensen K, Gradzielski M, Hoffmann H. Interaction of ABA Block Copolymers with Ionic Surfactants: Influence on Micellization and Gelation. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100013a068] [Citation(s) in RCA: 176] [Impact Index Per Article: 8.0] [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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46
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Janssen S, Schwahn D, Springer T, Mortensen K. Coil and Melt Compressibility of Polymer Blends Studied by SANS and pVT Experiments. Macromolecules 2002. [DOI: 10.1021/ma00111a059] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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47
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Falcao AN, Pedersen JS, Mortensen K. Structure of randomly crosslinked poly(dimethylsiloxane) networks produced by electron irradiation. Macromolecules 2002. [DOI: 10.1021/ma00072a011] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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Mischenko N, Reynders K, Mortensen K, Scherrenberg R, Fontaine F, Graulus R, Reynaers H. Structural Studies of Thermoplastic Triblock Copolymer Gels. Macromolecules 2002. [DOI: 10.1021/ma00086a061] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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