1
|
Larsson J, Auscher S, Pararajasingam G, Heinsen LJ, Andersen TR, Lambrechtsen J, Egstrup K. Reply to: "Insulin resistance is an important index to assess glucose and insulin metabolism, but not a biological risk factor for high-risk coronary artery plaque composition". Atherosclerosis 2024:117524. [PMID: 38523001 DOI: 10.1016/j.atherosclerosis.2024.117524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 03/14/2024] [Indexed: 03/26/2024]
Affiliation(s)
- Johanna Larsson
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark.
| | - Søren Auscher
- Department of Cardiology, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Gokulan Pararajasingam
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Laurits Juhl Heinsen
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Thomas Rueskov Andersen
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Jess Lambrechtsen
- Department of Cardiology, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Kenneth Egstrup
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| |
Collapse
|
2
|
Fransson C, Barlow MJ, Kavanagh PJ, Larsson J, Jones OC, Sargent B, Meixner M, Bouchet P, Temim T, Wright GS, Blommaert JADL, Habel N, Hirschauer AS, Hjorth J, Lenkić L, Tikkanen T, Wesson R, Coulais A, Fox OD, Gastaud R, Glasse A, Jaspers J, Krause O, Lau RM, Nayak O, Rest A, Colina L, van Dishoeck EF, Güdel M, Henning T, Lagage PO, Östlin G, Ray TP, Vandenbussche B. Emission lines due to ionizing radiation from a compact object in the remnant of Supernova 1987A. Science 2024; 383:898-903. [PMID: 38386759 DOI: 10.1126/science.adj5796] [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] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 01/12/2024] [Indexed: 02/24/2024]
Abstract
The nearby Supernova 1987A was accompanied by a burst of neutrino emission, which indicates that a compact object (a neutron star or black hole) was formed in the explosion. There has been no direct observation of this compact object. In this work, we observe the supernova remnant with JWST spectroscopy, finding narrow infrared emission lines of argon and sulfur. The line emission is spatially unresolved and blueshifted in velocity relative to the supernova rest frame. We interpret the lines as gas illuminated by a source of ionizing photons located close to the center of the expanding ejecta. Photoionization models show that the line ratios are consistent with ionization by a cooling neutron star or a pulsar wind nebula. The velocity shift could be evidence for a neutron star natal kick.
Collapse
Affiliation(s)
- C Fransson
- Department of Astronomy, Stockholm University, The Oskar Klein Centre, AlbaNova, SE-106 91 Stockholm, Sweden
| | - M J Barlow
- Department of Physics and Astronomy, University College London, London WC1E 6BT, UK
| | - P J Kavanagh
- Department of Experimental Physics, Maynooth University, Maynooth, County Kildare, Ireland
- Astronomy & Astrophyics Section, School of Cosmic Physics, Dublin Institute for Advanced Studies, Dublin 2, Ireland
| | - J Larsson
- Department of Physics, KTH Royal Institute of Technology, The Oskar Klein Centre, AlbaNova, SE-106 91 Stockholm, Sweden
| | - O C Jones
- UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
| | - B Sargent
- Space Telescope Science Institute, Baltimore, MD 21218, USA
- Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - M Meixner
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - P Bouchet
- Université Paris-Saclay, Université Paris Cité, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Centre National de la Recherche Scientifique, Astrophysique Instrumentation Modélisation, Saint Aubin, France
| | - T Temim
- Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
| | - G S Wright
- UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
| | - J A D L Blommaert
- Astronomy and Astrophysics Research Group, Department of Physics and Astrophysics, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
| | - N Habel
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - A S Hirschauer
- Space Telescope Science Institute, Baltimore, MD 21218, USA
| | - J Hjorth
- Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, 2200 Copenhagen, Denmark
| | - L Lenkić
- Stratospheric Observatory for Infrared Astronomy Science Center, Universities Space Research Association, NASA Ames Research Center, Moffett Field, CA 94035, USA
| | - T Tikkanen
- School of Physics and Astronomy, Space Research Centre, Space Park Leicester, University of Leicester, Leicester LE4 5SP, UK
| | - R Wesson
- School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, UK
| | - A Coulais
- Université Paris-Saclay, Université Paris Cité, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Centre National de la Recherche Scientifique, Astrophysique Instrumentation Modélisation, Saint Aubin, France
- Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères, Observatoire de Paris, Paris Sciences et Lettres Research University, National Centre for Scientific Research, Sorbonne Université, Paris, France
| | - O D Fox
- Space Telescope Science Institute, Baltimore, MD 21218, USA
| | - R Gastaud
- Université Paris-Saclay, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Detectors Electronics and Computing for Physics, Gif-sur-Yvette, France
| | - A Glasse
- UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
| | - J Jaspers
- Department of Experimental Physics, Maynooth University, Maynooth, County Kildare, Ireland
- Astronomy & Astrophyics Section, School of Cosmic Physics, Dublin Institute for Advanced Studies, Dublin 2, Ireland
| | - O Krause
- Max-Planck-Institut für Astronomie, D-69117 Heidelberg, Germany
| | - R M Lau
- National Optical-Infrared Astronomy Research Laboratory, National Science Foundation, Tucson, AZ 85719, USA
| | - O Nayak
- NASA Goddard Space Flight Center, Greenbelt, MD 20770, USA
| | - A Rest
- Space Telescope Science Institute, Baltimore, MD 21218, USA
- Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - L Colina
- Centro de Astrobiología, Consejo Superior de Investigaciones Científicas - Instituto Nacional de Técnica Aeroespacial, Torrejón de Ardoz, E-28850, Madrid, Spain
| | - E F van Dishoeck
- Max-Planck Institut für Extraterrestrische Physik, D-85748 Garching, Germany
- Leiden Observatory, 2300 RA Leiden, Netherlands
| | - M Güdel
- Max-Planck-Institut für Astronomie, D-69117 Heidelberg, Germany
- Department of Astrophysics, University of Vienna, A-1180 Vienna, Austria
- Institute for Particle Physics and Astrophysics, Eidgenössische Technische Hochschule Zürich, 8093 Zürich, Switzerland
| | - Th Henning
- Max-Planck-Institut für Astronomie, D-69117 Heidelberg, Germany
| | - P-O Lagage
- Université Paris-Saclay, Université Paris Cité, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Centre National de la Recherche Scientifique, Astrophysique Instrumentation Modélisation, Saint Aubin, France
| | - G Östlin
- Department of Astronomy, Stockholm University, The Oskar Klein Centre, AlbaNova, SE-106 91 Stockholm, Sweden
| | - T P Ray
- Astronomy & Astrophyics Section, School of Cosmic Physics, Dublin Institute for Advanced Studies, Dublin 2, Ireland
| | - B Vandenbussche
- Institute of Astronomy, Katholieke Universiteit Leuven, 3001 Leuven, Belgium
| |
Collapse
|
3
|
Wannberg J, Gising J, Henriksson M, Vo DD, Sävmarker J, Sallander J, Gutiérrez-de-Terán H, Larsson J, Hamid S, Ablahad H, Spizzo I, Gaspari TA, Widdop RE, Grönbladh A, Petersen NN, Backlund M, Hallberg M, Larhed M. N-(Heteroaryl)thiophene sulfonamides as angiotensin AT2 receptor ligands. Eur J Med Chem 2024; 265:116122. [PMID: 38199164 DOI: 10.1016/j.ejmech.2024.116122] [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: 11/11/2023] [Revised: 12/22/2023] [Accepted: 01/02/2024] [Indexed: 01/12/2024]
Abstract
Two series of N-(heteroaryl)thiophene sulfonamides, encompassing either a methylene imidazole group or a tert-butylimidazolylacetyl group in the meta position of the benzene ring, have been synthesized. An AT2R selective ligand with a Ki of 42 nM was identified in the first series and in the second series, six AT2R selective ligands with significantly improved binding affinities and Ki values of <5 nM were discovered. The binding modes to AT2R were explored by docking calculations combined with molecular dynamics simulations. Although some of the high affinity ligands exhibited fair stability in human liver microsomes, comparable to that observed with C21 undergoing clinical trials, most ligands displayed a very low metabolic stability with t½ of less than 10 min in human liver microsomes. The most promising ligand, with an AT2R Ki value of 4.9 nM and with intermediate stability in human hepatocytes (t½ = 77 min) caused a concentration-dependent vasorelaxation of pre-contracted mouse aorta.
Collapse
Affiliation(s)
- Johan Wannberg
- Department of Medicinal Chemistry, Science for Life Laboratory, BMC, Uppsala University, Box 574, SE-751 23, Uppsala, Sweden
| | - Johan Gising
- The Beijer Laboratory, Department of Medicinal Chemistry, Science for Life Laboratory, BMC, Uppsala University, Box 591, 751 24, Uppsala, Sweden
| | - Martin Henriksson
- Drug Discovery and Development Platform, Science for Life Laboratory, Department of Organic Chemistry, Stockholm University, Solna, Sweden
| | - Duc Duy Vo
- Department of Medicinal Chemistry, Science for Life Laboratory, BMC, Uppsala University, Box 574, SE-751 23, Uppsala, Sweden
| | - Jonas Sävmarker
- The Beijer Laboratory, Department of Medicinal Chemistry, Science for Life Laboratory, BMC, Uppsala University, Box 591, 751 24, Uppsala, Sweden
| | - Jessica Sallander
- Department of Cell and Molecular Biology, BMC, Box 596, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Hugo Gutiérrez-de-Terán
- Department of Cell and Molecular Biology, BMC, Box 596, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Johanna Larsson
- Department of Medicinal Chemistry, Science for Life Laboratory, BMC, Uppsala University, Box 574, SE-751 23, Uppsala, Sweden
| | - Selin Hamid
- The Beijer Laboratory, Department of Pharmaceutical Biosciences, Neuropharmacology and Addiction Research, BMC, Uppsala University, Box 591, 751 24, Uppsala, Sweden; Department of Pharmacology and Biomedicine Discovery Institute, Monash University, Clayton, 3800, VIC, Australia
| | - Hanin Ablahad
- The Beijer Laboratory, Department of Pharmaceutical Biosciences, Neuropharmacology and Addiction Research, BMC, Uppsala University, Box 591, 751 24, Uppsala, Sweden; Department of Pharmacology and Biomedicine Discovery Institute, Monash University, Clayton, 3800, VIC, Australia
| | - Iresha Spizzo
- Department of Pharmacology and Biomedicine Discovery Institute, Monash University, Clayton, 3800, VIC, Australia
| | - Tracey A Gaspari
- Department of Pharmacology and Biomedicine Discovery Institute, Monash University, Clayton, 3800, VIC, Australia
| | - Robert E Widdop
- Department of Pharmacology and Biomedicine Discovery Institute, Monash University, Clayton, 3800, VIC, Australia
| | - Alfhild Grönbladh
- The Beijer Laboratory, Department of Pharmaceutical Biosciences, Neuropharmacology and Addiction Research, BMC, Uppsala University, Box 591, 751 24, Uppsala, Sweden
| | - Nadia N Petersen
- The Beijer Laboratory, Department of Medicinal Chemistry, Science for Life Laboratory, BMC, Uppsala University, Box 591, 751 24, Uppsala, Sweden
| | - Maria Backlund
- Department of Pharmacy, Uppsala University, Uppsala, Sweden and Uppsala University Drug Optimization and Pharmaceutical Profiling Platform (UDOPP), Science for Life Laboratory, Uppsala, Sweden
| | - Mathias Hallberg
- The Beijer Laboratory, Department of Pharmaceutical Biosciences, Neuropharmacology and Addiction Research, BMC, Uppsala University, Box 591, 751 24, Uppsala, Sweden
| | - Mats Larhed
- The Beijer Laboratory, Department of Medicinal Chemistry, Science for Life Laboratory, BMC, Uppsala University, Box 591, 751 24, Uppsala, Sweden.
| |
Collapse
|
4
|
Larsson J, Auscher S, Shamoun A, Pararajasingam G, Heinsen LJ, Andersen TR, Lindholt JS, Diederichsen ACP, Lambrechtsen J, Egstrup K. Insulin resistance is associated with high-risk coronary artery plaque composition in asymptomatic men between 65 and 75 years and no diabetes: A DANCAVAS cross-sectional sub-study. Atherosclerosis 2023; 385:117328. [PMID: 38390826 DOI: 10.1016/j.atherosclerosis.2023.117328] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 02/24/2024]
Abstract
BACKGROUND AND AIMS Insulin resistance (IR) and pre-diabetes are associated with an increased risk of cardiovascular disease (CVD). We aimed to investigate vulnerable plaque composition in relation to IR and pre-diabetes in asymptomatic non-diabetic men. METHODS All participants underwent a contrast-enhanced coronary computed tomography angiography (CCTA) to evaluate coronary artery plaque burden and plaque composition (necrotic core, dense calcium, fibrotic and fibrous-fatty volume). Homeostasis model assessment of IR (HOMA-IR) was used, and participants were stratified into tertiles. Participants underwent a standard oral glucose tolerance test (OGTT) and were categorized into 2 groups (normal glucose tolerance (NGT) or pre-diabetes). A multivariable linear regression model was used to evaluate the association between vulnerable plaque composition and IR or glycemic group. RESULTS Four-hundred-and-fifty non-diabetic men without known CAD were included. The mean age was 70 ± 3 years. Participants in the higher HOMA-IR tertile (H-IR) had higher median necrotic plaque volume compared to the lower HOMA-IR tertile (L-IR) (18.2 vs. 11.0 mm3, p = 0.02). H-IR tertile (β 0.37 [95% CI 0.10-0.65], p = 0.008), pack-years (β 0.07 [95% CI 0.007-0.14], p = 0.03) and total atheroma volume (TAV) (β 0.47 [95% CI 0.36-0.57], p < 0.001) remained associated with necrotic plaque volume in the multivariable linear regression model. CONCLUSIONS IR was associated with necrotic plaque volume in asymptomatic men without diabetes. Thus, even in asymptomatic men without diabetes, IR seems to have an incremental effect on necrotic plaque volume and vulnerable plaque composition.
Collapse
Affiliation(s)
- Johanna Larsson
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark.
| | - Søren Auscher
- Department of Cardiology, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - André Shamoun
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Gokulan Pararajasingam
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Laurits Juhl Heinsen
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Thomas Rueskov Andersen
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Jes Sanddal Lindholt
- Department of Cardiac, Thoracic and Vascular Surgery, Odense University Hospital Odense, J.B. Winsløws Vej 4, 5000, Odense, Denmark
| | | | - Jess Lambrechtsen
- Department of Cardiology, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Kenneth Egstrup
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| |
Collapse
|
5
|
Larsson J, Nyborg L, Psouni E. The Role of Family Function and Triadic Interaction on Preterm Child Development-A Systematic Review. Children (Basel) 2022; 9:1695. [PMID: 36360423 PMCID: PMC9689109 DOI: 10.3390/children9111695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 09/22/2023]
Abstract
Preterm infants are at high risk of developmental disability/delay and are more dependent on their caregiving environment for regulation due to their neurological immaturity. A premature birth is also a major stressor to the family system that constitutes the infant's caregiving environment. The following systematic review investigates whether families with preterm children differ from families with full-term children in their interactions, and what impact the quality of family interaction has on child development. Using the Cochrane model, we conducted a systematic review of quantitative studies published in psycINFO, socINDEX, and PubMed, concerning family quality in triadic interactions in families with premature infants and children, and at least one child development outcome variable. The quality of these studies was assessed using the Newcastle-Ottawa scale assessment form for cohort studies (NOS). Eleven studies were included in the review. Quality of family interactions is either equal to or poorer in families with preterm children, compared with families with full-term children. Importantly, the link between quality of family interactions and child development outcome is stronger in preterm children compared with full-term children, regarding both positive and negative influence. Our results highlight the importance of strengthening family interactions in order to promote development in preterm children. Notably, this review provides the first systematic overview of family function and the quality of triadic interactions in preterm families. The limited number of studies with a family-system focus makes it difficult for us to draw any definitive conclusions, while underscoring the need for more observational studies, particularly post-infancy, to be able to identify specific aspects of family interactions that may be critical for preterm child development.
Collapse
Affiliation(s)
| | | | - Elia Psouni
- Department of Psychology, Lund University, 221 00 Lund, Sweden
| |
Collapse
|
6
|
Ekström J, Jurgilaitis A, Kroon D, Pham V, Larsson J. FemtoMAX – a beamline for ultrafast pump/X-ray probe experiments. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322091987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
|
7
|
Pararajasingam G, Heinsen LJ, Larsson J, Andersen TR, Løgstrup BB, Auscher S, Hangaard J, Møgelvang R, Egstrup K. Diabetic microvascular complications are associated with reduced global longitudinal strain independent of atherosclerotic coronary artery disease in asymptomatic patients with diabetes mellitus: a cross-sectional study. BMC Cardiovasc Disord 2021; 21:269. [PMID: 34078282 PMCID: PMC8173786 DOI: 10.1186/s12872-021-02063-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 05/14/2021] [Indexed: 02/08/2023] Open
Abstract
Background Reduced left ventricular function, assessed by global longitudinal strain (GLS), is sometimes observed in asymptomatic patients with diabetes mellitus (DM) and is often present in patients with diabetes-related microvascular complications. Our aim was to assess the association between microvascular complications, coronary artery plaque burden (PB) and GLS in asymptomatic patients with DM and non-obstructive coronary artery disease (CAD). Methods This cross-sectional study included patients with DM without any history, symptoms or objective evidence of obstructive CAD. All patients were identified in the outpatient Clinic of Endocrinology at Odense University Hospital Svendborg. An echocardiography and a coronary computed tomography angiography were performed to assess GLS and the degree of CAD, respectively. A coronary artery stenosis < 50% was considered non-obstructive. A linear regression model was used to evaluate the impact of potential confounders on GLS with adjustment of body mass index (BMI), mean arterial pressure (MAP), microvascular complications, type of diabetes, tissue Doppler average early diastolic mitral annulus velocity (e’) and PB.
Results Two hundred and twenty-two patients were included, of whom 172 (77%) had type 2 DM and 50 (23%) had type 1 diabetes. One hundred and eleven (50%) patients had microvascular complications. GLS decreased as the burden of microvascular complications increased (P-trend = 0.01): no microvascular complications, GLS (− 16.4 ± 2.5%), 1 microvascular complication (− 16.0 ± 2.5%) and 2–3 microvascular complications (− 14.9 ± 2.8%). The reduction in GLS remained significant after multivariable adjustment (β 0.50 [95% CI 0.11–0.88], p = 0.01). BMI (β 0.12 [95% CI 0.05–0.19]) and MAP (β 0.05 [95% CI 0.01–0.08]) were associated with reduced GLS. In addition, an increased number of microvascular complications was associated with increased PB (β 2.97 [95% CI 0.42–5.51], p = 0.02) in a univariable linear regression model, whereas there was no significant association between PB and GLS. Conclusions The burden of microvascular complications was associated with reduced GLS independent of other cardiovascular risk factors in asymptomatic patients with DM and non-obstructive CAD. In addition, the burden of microvascular complications was associated with increasing PB, whereas PB was not associated with GLS. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-021-02063-w.
Collapse
Affiliation(s)
- Gokulan Pararajasingam
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark.
| | - Laurits Juhl Heinsen
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Johanna Larsson
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Thomas Rueskov Andersen
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Brian Bridal Løgstrup
- Department of Cardiology, Aarhus University Hospital Skejby, Palle Juul Jensens Boulevard 99, 8200, Aarhus, Denmark
| | - Søren Auscher
- Department of Internal Medicine (Cardiology), Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Jørgen Hangaard
- Department of Internal Medicine (Endocrinology), Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| | - Rasmus Møgelvang
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark.,Heart Centre, Copenhagen University Hospital Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
| | - Kenneth Egstrup
- Cardiovascular Research Unit, Odense University Hospital Svendborg, Baagøes Allé 15, 5700, Svendborg, Denmark
| |
Collapse
|
8
|
Nieuwhof-Leppink AJ, Hussong J, Chase J, Larsson J, Renson C, Hoebeke P, Yang S, von Gontard A. Definitions, indications and practice of urotherapy in children and adolescents: - A standardization document of the International Children's Continence Society (ICCS). J Pediatr Urol 2021; 17:172-181. [PMID: 33478902 DOI: 10.1016/j.jpurol.2020.11.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [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] [Received: 06/11/2020] [Revised: 09/09/2020] [Accepted: 11/04/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND Urotherapy is an umbrella term for all non-surgical, non-pharmacological interventions for lower urinary tract disorders (LUTD) in children and adolescents. Urotherapy is a specialized practice, which has become mainstay therapy not only for daytime urinary incontinence, but also for nocturnal enuresis, functional constipation and fecal incontinence. The aim of urotherapy is to achieve the normalization of the micturition and bowel pattern and to prevent further functional disturbances by repeated training. It is well known that in the treatment of adult and childhood incontinence a team approach is best, where there are shared areas of expertise and also discipline-specific expertise available. AIM We present a consensus view from a cross-professional team of experts affiliated with the International Children's Continence Society on definitions, indications and practice of urotherapy. This is a selective, non-systematic review with practical recommendations for the implementation and research on urotherapy. METHODS The document uses the globally accepted ICCS terminology. Evidence-based literature serves as the basis, but in areas lacking in primary evidence, expert consensus is used. Before submission, a full draft was made available to all ICCS members for additional comments. RESULTS Urotherapy uses non-pharmacological, non-surgical methods and focuses on behavioral interventions, largely based on cognitive-behavioral psychotherapy (CBT). Standard urotherapy comprises components such as provision of information, instructions, life-style advice, counselling and registration of symptoms. Specific urotherapy is tailored towards specific disorders and includes alarm treatment, biofeedback training, pelvic floor training, neurostimulation and other interventions. Fig. 1. Urotherapy is a treatment that addresses all aspects of incontinence, leading to the best clinical outcome. This includes somatic, psychosocial, and behavioral problems and quality of life. Therefore urotherapy is recommended by the ICCS as the first-line treatment for most types of LUTD. The document is intended to be clinically useful in primary, secondary and tertiary care.
Collapse
Affiliation(s)
- A J Nieuwhof-Leppink
- Department Psychology and Urology, Wilhelmina Children's Hospital, University Medical Center Utrecht, the Netherlands.
| | - J Hussong
- Department of Child and Adolescent Psychiatry, Saarland University Hospital Homburg, Germany
| | - J Chase
- Victorian Children's Continence Clinic, Paediatric Gastroenterology Victoria, Royal Children's Hospital, Melbourne, Australia
| | - J Larsson
- Section for Paediatric Nephrology, Kristianstad Hospital CSK, Sweden
| | - C Renson
- Department of Urology, Ghent University Hospital, Ghent, Belgium
| | - P Hoebeke
- Department of Urology, Ghent University Hospital, Ghent, Belgium
| | - S Yang
- Department of Urolgy, Taipei Tzu Chi Hospital and Buddhist Tzu Chi Universtiy, New Taipei, Taiwan
| | - A von Gontard
- Department of Child and Adolescent Psychiatry, Saarland University Hospital Homburg, Germany
| |
Collapse
|
9
|
Eggertsen M, Tano SA, Chacin DH, Eklöf JS, Larsson J, Berkström C, Buriyo AS, Halling C. Different environmental variables predict distribution and cover of the introduced red seaweed Eucheuma denticulatum in two geographical locations. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02417-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractIn this study we examined abiotic and biotic factors that could potentially influence the presence of a non-indigenous seaweed, Eucheuma denticulatum, in two locations, one outside (Kane’ohe Bay, Hawai’i, USA) and one within (Mafia Island, Tanzania) its natural geographical range. We hypothesized that the availability of hard substrate and the amount of wave exposure would explain distribution patterns, and that higher abundance of herbivorous fishes in Tanzania would exert stronger top–down control than in Hawai’i. To address these hypotheses, we surveyed E. denticulatum in sites subjected to different environmental conditions and used generalized linear mixed models (GLMM) to identify predictors of E. denticulatum presence. We also estimated grazing intensity on E. denticulatum by surveying the type and the amount of grazing scars. Finally, we used molecular tools to distinguish between indigenous and non-indigenous strains of E. denticulatum on Mafia Island. In Kane’ohe Bay, the likelihood of finding E. denticulatum increased with wave exposure, whereas on Mafia Island, the likelihood increased with cover of coral rubble, and decreased with distance from areas of introduction (AOI), but this decrease was less pronounced in the presence of coral rubble. Grazing intensity was higher in Kane’ohe Bay than on Mafia Island. However, we still suggest that efforts to reduce non-indigenous E. denticulatum should include protection of important herbivores in both sites because of the high levels of grazing close to AOI. Moreover, we recommend that areas with hard substrate and high structural complexity should be avoided when farming non-indigenous strains of E. denticulatum.
Collapse
|
10
|
Larsson J, Sundstrom J, Hallmarker U, James S, Andersen K. Risk of aortic disease in long-distance cross-country skiers; a study of 209,226 patients. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2320] [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: 11/14/2022] Open
Abstract
Abstract
Background/Introduction
Aneurysmal dilatation and dissection of the aorta are two facets of aortic disease that can lead to major disability and death. Some risk factors for aortic disease are also risk factors for atherosclerotic disease, but the overall causes of aortic disease are diverse and largely unknown. Persons with aortic aneurysms are advised to limit their physical activity, but associations of physical activity with subsequent incidence of aortic disease are little known. Earlier studies have shown strong association of performance in Vasaloppet with incidence of hypertension, a major risk factor for aortic disease.
Aim
To investigate associations of high levels of physical activity with incidence of aortic disease.
Methods
We studied 209,226 participants in a 30–90 km cross-country skiing event (Vasaloppet) and 536,038 persons from the general population, matched to the skiers on age, sex and residence. The number of completed races during the study period and the fastest relative finishing time in a race was recorded. The main outcomes were: 1) aortic disease (defined as thoracic and abdominal aortic aneurysm and/or aortic dissection); and 2) aortic dissection.
Results
During a median time at risk of 8.8 years, 1,442 aortic disease events and 265 aortic dissections occurred. Skiers had lower incidence of aortic disease than non-skiers (Cox proportional hazards ratio [HR] 0.42; 95% confidence interval [CI] 0.36–0.50). An association of better finishing time with aortic disease was observed, with a dose-response gradient from the fastest third (HR 0.25; 95% CI 0.18–0.35), via the slowest third (HR 0.64; 95% CI 0.49–0.82) to the non-skiers (reference group). Among skiers the number of completed races was not associated with incidence of aortic disease. Skiers also had lower incidence of acute aortic dissection (HR 0.61; 95% CI 0.44–0.85) than non-skiers. Low event rate among skiers made conclusions in subgroups unreasonable. All results are adjusted for age, sex, education and income. Results were similar in models accounting for use of antihypertensive and cholesterol-lowering medicines and genetic syndromes associated with aortic disease.
Conclusion
Participation in a long-distance skiing event was associated with lower risk of aortic disease and aortic dissection. Faster completion of the race was strongly associated with lower incidence of aortic disease. If causal, this study suggests that high physical activity and exercise may be protective against aortic disease.
Kaplan-Meier Aorta disease
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- J Larsson
- Uppsala University Hospital, Uppsala, Sweden
| | - J Sundstrom
- Uppsala University Hospital, Uppsala, Sweden
| | | | - S James
- Uppsala University Hospital, Uppsala, Sweden
| | - K Andersen
- Uppsala University Hospital, Uppsala, Sweden
| |
Collapse
|
11
|
Abstract
OBJECTIVE To determine whether occupational exposure to silica dust is associated with an increased risk of developing sarcoidosis. DESIGN Case-control study of all individuals between 20 and 65 years of age diagnosed with sarcoidosis (D86) in Sweden between 2007 and 2016. Controls were matched to cases (2:1) based on age, sex and county at the time of diagnosis. A Job Exposure Matrix was used to estimate the occupational silica exposure of all cases and controls. SETTING Medical and occupational data from the National Outpatient Register were used to implement a case-control analysis, while the two controls used for each case were selected from the National Register of the Total Population. Information about occupation and time of employment were collected from the Swedish Occupational Register. PARTICIPANTS All men and women aged 20-65 years old who were diagnosed sarcoidosis (D86) from 2007 to 2016 were included and assigned two controls. MAIN OUTCOMES Silica dust exposure correlates with an increased risk of developing sarcoidosis in men. RESULTS The prevalence of silica exposure at work was statistically significantly higher among male cases than controls (OR 1.27, 95% CI 1.13 to 1.43). For men of an age of 35 years or younger the correlation seems to be stronger (OR 1.48, 95% CI 1.1 to 1.87) than in older men (OR 1.21, 95% CI 1.05 to 1.39). For men older than 35 with exposure to silica the prevalence of sarcoidosis increased with the exposure time, with an OR of 1.44 (95% CI 1.04 to 2.00) for exposure of more than 10 years. CONCLUSIONS Occupational exposure to silica dust seems to increase the risk of sarcoidosis among men between 20 and 65 years of age. The risk is higher among exposed men 35 years or younger and older men with longer exposure (>6 years).
Collapse
Affiliation(s)
- Pål Graff
- Department of Chemical and Biological Work Environment, STAMI, Oslo, Norway
| | - Johanna Larsson
- Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Ing-Liss Bryngelsson
- Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Pernilla Wiebert
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Per Vihlborg
- Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Odensbackens Health Center, Örebro, Sweden
| |
Collapse
|
12
|
Bengtsson ÅUJ, Ekström JC, Wang X, Jurgilaitis A, Pham VT, Kroon D, Larsson J. Repetitive non-thermal melting as a timing monitor for femtosecond pump/probe X-ray experiments. Struct Dyn 2020; 7:054303. [PMID: 32984435 PMCID: PMC7511237 DOI: 10.1063/4.0000020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 08/26/2020] [Indexed: 01/27/2023] Open
Abstract
Time-resolved optical pump/X-ray probe experiments are often used to study structural dynamics. To ensure high temporal resolution, it is necessary to monitor the timing between the X-ray pulses and the laser pulses. The transition from a crystalline solid material to a disordered state in a non-thermal melting process can be used as a reliable timing monitor. We have performed a study of the non-thermal melting of InSb in single-shot mode, where we varied the sample temperature in order to determine the conditions required for repetitive melting. We show how experimental conditions affect the feasibility of such a timing tool.
Collapse
Affiliation(s)
- Å. U. J. Bengtsson
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - J. C. Ekström
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Xiaocui Wang
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - A. Jurgilaitis
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Van-Thai Pham
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - D. Kroon
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - J. Larsson
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| |
Collapse
|
13
|
Larsson J, Graff P, Bryngelsson IL, Vihlborg P. Sarcoidosis and increased risk of comorbidities and mortality in sweden. Sarcoidosis Vasc Diffuse Lung Dis 2020; 37:104-135. [PMID: 33093776 PMCID: PMC7569548 DOI: 10.36141/svdld.v37i2.9142] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 03/18/2020] [Indexed: 11/04/2022]
Abstract
Introduction: Sarcoidosis is a systemic inflammatory disorder, with an unclear etiology, involving granuloma formation that in most cases affects the lungs and intrathoracic lymph nodes. Sarcoidosis occurs in an acute or chronic form, each with different clinical presentation and prognosis. Methods: Case-control study of comorbidity and mortality in people diagnosed with sarcoidosis (ICD10 code D86) from 2007 through 2016 in Sweden. Controls were matched to cases (2:1) based on age, sex and county at the time of diagnosis. Data was collected from the Swedish National Patient Register and The Cause of Death Register. All men and women aged 20-65 years old who were diagnosed with sarcoidosis (D86, ICD10) during the years of study were included, resulting 7828 cases and 15656 controls. Results: Patients with sarcoidosis had increased mortality compared to matched controls (hazard ratio 1.88; 95% CI 1.56 – 2.26) and the Swedish general population (standardized mortality ratios1.75; 95% CI 1.52 – 2.00). The sarcoid cases, compared to controls, also had a significantly greater number of inpatient visits within several different chapters of ICD10 e.g. cardiomyopathy, heart failure, pulmonary embolism and malignant neoplasm. Conclusion: Individuals with sarcoidosis are at higher risk of comorbidities and mortality than matched controls as well as the general population of Sweden. These findings are important knowledge for healthcare professionals who meet sarcoid patients, to encourage identification and treatment of comorbidities to reduce the risk of impaired quality of life and, eventually, premature death. (Sarcoidosis Vasc Diffuse Lung Dis 2020; 37 (2): 104-135)
Collapse
Affiliation(s)
- Johanna Larsson
- Department of Occupational and Environmental Medicine, Örebro University Hospital, Örebro, Sweden
| | - Pål Graff
- National Institute of Occupational Health, Department of Chemical and Biological Work Environment, Oslo, Norway
| | - Ing-Liss Bryngelsson
- Department of Occupational and Environmental Medicine, Örebro University Hospital, Örebro, Sweden
| | - Per Vihlborg
- Department of Occupational and Environmental Medicine, Örebro University Hospital, Örebro, Sweden
| |
Collapse
|
14
|
Popova G, Ladds MJGW, Johansson L, Saleh A, Larsson J, Sandberg L, Sahlberg SH, Qian W, Gullberg H, Garg N, Gustavsson AL, Haraldsson M, Lane D, Yngve U, Lain S. Optimization of Tetrahydroindazoles as Inhibitors of Human Dihydroorotate Dehydrogenase and Evaluation of Their Activity and In Vitro Metabolic Stability. J Med Chem 2020; 63:3915-3934. [PMID: 32212728 DOI: 10.1021/acs.jmedchem.9b01658] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Human dihydroorotate dehydrogenase (DHODH), an enzyme in the de novo pyrimidine synthesis pathway, is a target for the treatment of rheumatoid arthritis and multiple sclerosis and is re-emerging as an attractive target for cancer therapy. Here we describe the optimization of recently identified tetrahydroindazoles (HZ) as DHODH inhibitors. Several of the HZ analogues synthesized in this study are highly potent inhibitors of DHODH in an enzymatic assay, while also inhibiting cancer cell growth and viability and activating p53-dependent transcription factor activity in a reporter cell assay. Furthermore, we demonstrate the specificity of the compounds toward the de novo pyrimidine synthesis pathway through supplementation with an excess of uridine. We also show that induction of the DNA damage marker γ-H2AX after DHODH inhibition is preventable by cotreatment with the pan-caspase inhibitor Z-VAD-FMK. Additional solubility and in vitro metabolic stability profiling revealed compound 51 as a favorable candidate for preclinical efficacy studies.
Collapse
Affiliation(s)
- Gergana Popova
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solnavägen 9, SE-171 65 Solna, Stockholm, Sweden
| | - Marcus J G W Ladds
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solnavägen 9, SE-171 65 Solna, Stockholm, Sweden.,SciLifeLab, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Tomtebodavägen 23, SE-171 21 Solna, Stockholm, Sweden
| | - Lars Johansson
- Chemical Biology Consortium Sweden, SciLifeLab, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21 Stockholm, Sweden
| | - Aljona Saleh
- SciLifeLab, Drug Discovery and Development Platform, ADME of Therapeutics Facility, Department of Pharmacy, Uppsala University, Box 580, SE-751 23 Uppsala, Sweden
| | - Johanna Larsson
- SciLifeLab, Drug Discovery and Development Platform, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-751 23 Uppsala, Sweden
| | - Lars Sandberg
- SciLifeLab, Drug Discovery and Development Platform, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-751 23 Uppsala, Sweden.,SciLifeLab, Drug Discovery and Development Platform, Department of Organic Chemistry, Stockholm University, Box 1030, SE-171 21 Solna, Stockholm, Sweden
| | - Sara Häggblad Sahlberg
- SciLifeLab, Drug Discovery and Development Platform, Department of Biochemistry and Biophysics, Stockholm University, SE-171 21 Solna, Stockholm, Sweden
| | - Weixing Qian
- Chemical Biology Consortium Sweden, Laboratories for Chemical Biology Umeå, Umeå University, SE-901 87 Umeå, Sweden
| | - Hjalmar Gullberg
- SciLifeLab, Drug Discovery and Development Platform, Department of Biochemistry and Biophysics, Stockholm University, SE-171 21 Solna, Stockholm, Sweden
| | - Neeraj Garg
- SciLifeLab, Drug Discovery and Development Platform, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-751 23 Uppsala, Sweden
| | - Anna-Lena Gustavsson
- Chemical Biology Consortium Sweden, SciLifeLab, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21 Stockholm, Sweden
| | - Martin Haraldsson
- Chemical Biology Consortium Sweden, SciLifeLab, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21 Stockholm, Sweden
| | - David Lane
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solnavägen 9, SE-171 65 Solna, Stockholm, Sweden
| | - Ulrika Yngve
- SciLifeLab, Drug Discovery and Development Platform, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-751 23 Uppsala, Sweden
| | - Sonia Lain
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solnavägen 9, SE-171 65 Solna, Stockholm, Sweden.,SciLifeLab, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Tomtebodavägen 23, SE-171 21 Solna, Stockholm, Sweden
| |
Collapse
|
15
|
Wang X, Ekström JC, Bengtsson ÅUJ, Jarnac A, Jurgilaitis A, Pham VT, Kroon D, Enquist H, Larsson J. Role of Thermal Equilibrium Dynamics in Atomic Motion during Nonthermal Laser-Induced Melting. Phys Rev Lett 2020; 124:105701. [PMID: 32216426 DOI: 10.1103/physrevlett.124.105701] [Citation(s) in RCA: 3] [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] [Received: 01/16/2020] [Revised: 02/13/2020] [Accepted: 02/18/2020] [Indexed: 06/10/2023]
Abstract
This study shows that initial atomic velocities as given by thermodynamics play an important role in the dynamics of phase transitions. We tracked the atomic motion during nonthermal laser-induced melting of InSb at different initial temperatures. The ultrafast atomic motion following bond breaking can in general be governed by two mechanisms: the random velocity of each atom at the time of bond breaking (inertial model), and the forces acting on the atoms after bond breaking. The melting dynamics was found to follow the inertial model over a wide temperature range.
Collapse
Affiliation(s)
- Xiaocui Wang
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - J C Ekström
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Å U J Bengtsson
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - A Jarnac
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
- ONERA, Université Paris Saclay, F-91123 Palaiseau, France
| | - A Jurgilaitis
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Van-Thai Pham
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - D Kroon
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - H Enquist
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - J Larsson
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| |
Collapse
|
16
|
Abstract
The growth of snail shells can be described by simple mathematical rules. Variation in a few parameters can explain much of the diversity of shell shapes seen in nature. However, empirical studies of gastropod shell shape variation typically use geometric morphometric approaches, which do not capture this growth pattern. We have developed a way to infer a set of developmentally descriptive shape parameters based on three-dimensional logarithmic helicospiral growth and using landmarks from two-dimensional shell images as input. We demonstrate the utility of this approach, and compare it to the geometric morphometric approach, using a large set of Littorina saxatilis shells in which locally adapted populations differ in shape. Our method can be modified easily to make it applicable to a wide range of shell forms, which would allow for investigations of the similarities and differences between and within many different species of gastropods.
Collapse
Affiliation(s)
- J. Larsson
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK
| | | | - S. Bengmark
- Mathematical Sciences, Chalmers University of Technology and University of Gothenburg, Gothenburg, Sweden
| | - T. Lundh
- Mathematical Sciences, Chalmers University of Technology and University of Gothenburg, Gothenburg, Sweden
| | - R. K. Butlin
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK
- Department of Marine Sciences, University of Gothenburg, Stömstad, Sweden
| |
Collapse
|
17
|
Sidorenko DS, Zykova TY, Khoroshko VA, Pokholkova GV, Demakov SA, Larsson J, Belyaeva ES, Zhimulev IF. Polytene chromosomes reflect functional organization of the Drosophila genome. Vavilovskii Zhurnal Genet Selektsii 2019. [DOI: 10.18699/vj19.474] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Polytene chromosomes of Drosophila melanogaster are a convenient model for studying interphase chromosomes of eukaryotes. They are giant in size in comparison with diploid cell chromosomes and have a pattern of cross stripes resulting from the ordered chromatid arrangement. Each region of polytene chromosomes has a unique banding pattern. Using the model of four chromatin types that reveals domains of varying compaction degrees, we were able to correlate the physical and cytological maps of some polytene chromosome regions and to show the main properties of genetic and molecular organization of bands and interbands, that we describe in this review. On the molecular map of the genome, the interbands correspond to decompacted aquamarine chromatin and 5’ ends of ubiquitously active genes. Gray bands contain lazurite and malachite chromatin, intermediate in the level of compaction, and, mainly, coding parts of genes. Dense black transcriptionally inactive bands are enriched in ruby chromatin. Localization of several dozens of interbands on the genome molecular map allowed us to study in detail their architecture according to the data of whole genome projects. The distribution of proteins and regulatory elements of the genome in the promoter regions of genes localized in the interbands shows that these parts of interbands are probably responsible for the formation of open chromatin that is visualized in polytene chromosomes as interbands. Thus, the permanent genetic activity of interbands and gray bands and the inactivity of genes in black bands are the basis of the universal banding pattern in the chromosomes of all Drosophila tissues. The smallest fourth chromosome of Drosophila with an atypical protein composition of chromatin is a special case. Using the model of four chromatin states and fluorescent in situ hybridization, its cytological map was refined and the genomic coordinates of all bands and interbands were determined. It was shown that, in spite of the peculiarities of this chromosome, its band organization in general corresponds to the rest of the genome. Extremely long genes of different Drosophila chromosomes do not fit the common scheme, since they can occupy a series of alternating bands and interbands (up to nine chromosomal structures) formed by parts of these genes.
Collapse
Affiliation(s)
| | | | | | | | | | - J. Larsson
- Department of Molecular Biology, Umea University
| | | | - I. F. Zhimulev
- Institute of Molecular and Cellular Biology, SB RAS; 3 Laboratory of Structural, Functional and Comparative Genomics of the Novosibirsk State University
| |
Collapse
|
18
|
Wang X, Jarnac A, Ekström JC, Bengtsson ÅUJ, Dorchies F, Enquist H, Jurgilaitis A, Pedersen MN, Tu CM, Wulff M, Larsson J. Generation of a large compressive strain wave in graphite by ultrashort-pulse laser irradiation. Struct Dyn 2019; 6:024501. [PMID: 30915389 PMCID: PMC6422787 DOI: 10.1063/1.5089291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
We have studied strain wave generation in graphite induced by an intense ultrashort laser pulse. The study was performed in the intensity regime above the ablation threshold of graphite. The aim was to maximize the strain and, thus, also the internal pressure (stress). Laser pulses with a 1 ps temporal duration melt the surface of graphite resulting in a molten material which initially exists at the solid density. As the molten material expands, a compressive strain wave starts propagating into the crystal below the molten layer. The strain pulse was studied with time-resolved X-ray diffraction. At a temporal delay of 100 ps after laser excitation, we observed >10% compressive strain, which corresponds to a pressure of 7.2 GPa. This strain could be reproduced by hydrodynamic simulations, which also provided a temperature map as a function of time and depth.
Collapse
Affiliation(s)
- Xiaocui Wang
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | | | - J. C. Ekström
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Å. U. J. Bengtsson
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - F. Dorchies
- Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33400 Talence, France
| | - H. Enquist
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - A. Jurgilaitis
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - M. N. Pedersen
- ESRF-The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - C.-M. Tu
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - M. Wulff
- ESRF-The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - J. Larsson
- Author to whom correspondence should be addressed:
| |
Collapse
|
19
|
Hsiung S, Knutsson A, van der Have O, Larsson J, Vallejo J, Dunér P, Heinonen S, Jönsson-Rylander AC, Bengtsson E, Nilsson J, Hultgårdh-Nilsson A. Hyperglycemia does not affect tissue repair in mouse models of arterial lesions with different morphologies. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.135] [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: 10/28/2022]
|
20
|
Knutsson A, Hsiung S, Roxå A, Andersson E, Rattik S, Rauch U, Larsson J, Nilsson J, Hultgårdh-Nilsson A. IL-22 deficiency reduces progression of advanced atherosclerotic carotid plaques in apoe deficient mice. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.121] [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: 10/28/2022]
|
21
|
Jarnac A, Wang X, Bengtsson ÅUJ, Ekström JC, Enquist H, Jurgilaitis A, Kroon D, Persson AIH, Pham VT, Tu CM, Larsson J. Communication: Demonstration of a 20 ps X-ray switch based on a photoacoustic transducer. Struct Dyn 2017; 4:051102. [PMID: 29085849 PMCID: PMC5630471 DOI: 10.1063/1.4993730] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/22/2017] [Indexed: 06/07/2023]
Abstract
We have studied an X-ray switch based on a gold coated indium antimonide crystal using time-resolved X-ray diffraction and demonstrated that the switch could reduce the pulse duration of a 100 ps X-ray pulse down to 20 ps with a peak reflectivity of 8%. We have used a dynamical diffraction code to predict the performance of the switch, which was then confirmed experimentally. The experiment was carried out at the FemtoMAX beamline at the short-pulse facility of the MAX IV laboratory. The performance and limitation of the switch are discussed in terms of acoustic transport properties between the two materials and the electron transport properties of gold.
Collapse
Affiliation(s)
| | - Xiaocui Wang
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Å U J Bengtsson
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - J C Ekström
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - H Enquist
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - A Jurgilaitis
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - D Kroon
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - A I H Persson
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - V-T Pham
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - C M Tu
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | | |
Collapse
|
22
|
Larsson J. Monitoring the anaesthetist in the operating theatre - professional competence and patient safety. Anaesthesia 2017; 72 Suppl 1:76-83. [DOI: 10.1111/anae.13743] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2016] [Indexed: 12/01/2022]
Affiliation(s)
- J. Larsson
- Health Services Research; Uppsala University and Clinic of Anaesthesia and Intensive Care; Uppsala University Hospital; Uppsala Sweden
| |
Collapse
|
23
|
Bernhoff K, Björck M, Larsson J, Jangland E. Patient Experiences of Life Years After Severe Civilian Lower Extremity Trauma With Vascular Injury. Eur J Vasc Endovasc Surg 2016; 52:690-695. [PMID: 27637376 DOI: 10.1016/j.ejvs.2016.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 03/10/2016] [Accepted: 07/17/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Severe lower limb trauma with arterial injury is often devastating for the individual. Many studies describe how to manage these injuries when they occur. Short-term functional outcome is quite well described, but the patients are often young, and their suffering is physical, mental, and social from a lifelong perspective. The aim of this study was to report patient experiences of their lives several years after their accidents, and to explore mechanisms of how to improve management. METHOD The Swedvasc registry was searched for participants from 1987 to 2011, living in the region of Uppsala, Sweden. Some amputated participants were added from the Walking Rehabilitation Center. There were five reconstructed patients with an intact limb, and three with amputations. In depth interviews were conducted and systematically analyzed, using A Giorgi's descriptive phenomenological method. RESULTS Eight patients participated, five with reconstructed and three with amputated limbs. Life affecting functional impairments were described by all patients. The patients undergoing amputation had received more structured follow up and support through the Walking Rehabilitation Center. The satisfaction with the cosmetic result was poorer than expected. All patients had developed strategies of how to cope with their impairments and stated they now lived "normal lives." CONCLUSIONS Despite substantial physical, psychological, and cosmetic impairments years after severe lower limb trauma, the participants described life as "normal" and mainly satisfactory. Transition to the new situation could have been facilitated by more frequent and continuous follow up after discharge from hospital, in particular among the non-amputated patients who tend to be lost to follow up. Findings also indicate that family members have to be acknowledged, strengthened, and supported.
Collapse
Affiliation(s)
- K Bernhoff
- Section of Orthopaedics, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.
| | - M Björck
- Section of Vascular Surgery, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - J Larsson
- Health Services Research, Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - E Jangland
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| |
Collapse
|
24
|
Elgzyri T, Larsson J, Nyberg P, Thörne J, Eriksson KF, Apelqvist J. Reconstructive vascular surgery and the extent of tissue damage due to diabetic foot ulcers relates to risk of new ulceration in patients with PAD. J Wound Care 2016; 24:590, 592-7. [PMID: 26654740 DOI: 10.12968/jowc.2015.24.12.590] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE There is limited information regarding new ulceration following the healing of ischaemic foot ulcers in diabetic patients. Our aim is to study new ulcerations in the same foot as the previous ulcer(s) in patients with diabetes and severe peripheral artery disease (PAD). METHOD Patients with diabetes and severe PAD who healed from previous ulcer(s) (Wagner grade 1-5, at or below the ankle), were recruited for the prospective study from the time of healing of their ulcer. Patients were followed up regarding new ulceration, and their treatments and ulcer status noted either directly or on examination of medical records. RESULTS We analysed the data on 602 patients with diabetes and severe PAD with healed foot ulcers, either primarily (n=443, 74%) or after minor amputation (n=159, 26%). Of these 51% (n=305) had revascularisation before healing from the previous ulcer, 34% (n=202) developed a new ulcer on the same foot within 15 months (range 0-106). Amputation was required by 22% (n=45) of patients, with a new ulcer on the same foot. The median survival time of all patients (n=602) was 54 months. By regression analysis, a low maximal Wagner grade for the previous ulcer and reconstructive vascular surgery was related to a decreased risk of developing new ulcers in the same foot. CONCLUSION Patients with diabetes and ischaemic foot ulcers have a high-risk for developing new ulcers and amputation in the same foot after healing. The extent of tissue involvement in the previous ulcer and reconstructive vascular surgery affected the risk for development of new ulcers.
Collapse
Affiliation(s)
- T Elgzyri
- Senior Consultant, Associate Professor, Department of Endocrinology, Skåne University Hospital, Malmö
| | - J Larsson
- Senior Consultant, Department of Orthopaedic Surgery, Skåne University Hospital, Lund
| | - P Nyberg
- Associate Professor, Department of Occupational Medicine, Skåne University Hospital, Lund
| | - J Thörne
- Senior Consultant, Department of Surgery, Helsingborg's Hospital, Helsingborg
| | - K-F Eriksson
- Senior Consultant, Associate Professor, Vascular Department, Skåne University Hospital, Malmö
| | - J Apelqvist
- Senior Consultant, Associate Professor, Department of Endocrinology, Skåne University Hospital, Malmö
| |
Collapse
|
25
|
Pilarski L, Larsson J, Demory E, Devaraj K, Sollert C. Selective Activation of Arylboronate or Aryne Reactivity as a Versatile Postfunctionalization Strategy. Synlett 2016. [DOI: 10.1055/s-0035-1561248] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
26
|
Larsson J, Sutherland S, Söderström Å, Roman-Emanuel C, Jeppsson A, Olofsson EH, Svensson PA. Bacterial contamination of suction catheter tips during aortic valve replacement surgery: a prospective observational cohort study. Patient Saf Surg 2015; 9:17. [PMID: 25972923 PMCID: PMC4430035 DOI: 10.1186/s13037-015-0066-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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] [Received: 02/02/2015] [Accepted: 04/27/2015] [Indexed: 12/04/2022] Open
Abstract
Background Bacterial mediastinitis is a severe complication after open heart surgery. The infection causes prolonged hospitalization and an increased mortality risk. Observations from orthopaedic surgery showed that the suction catheter used during surgery is commonly contaminated with bacteria. The aim of this study was to describe the prevalence of suction catheter contamination in cardiac surgery and to study if suction time influences the contamination risk. Methods Fifty suction catheter tips were collected during 25 aortic valve replacement operations. The suction tip was exchanged once during the operation (after aortotomy closure). The tips were subjected to bacterial contamination analysis. Results In 20 of the 25 investigated cases (80%), bacterial contamination was detected on one or both tips. The tip used during the beginning of the operation showed bacterial contamination in 13/25 cases (52%) and the second tip in 12/25 (48%). In 5/25 cases (20%) both tips were contaminated. There was no association between bacterial contamination and suction time. Coagulase-negative staphylococcus was the most commonly detected microorganism. Conclusions The suction device should be considered as a potential source of bacterial contamination in cardiac surgery. The results suggest that the suction catheter should be replaced before key moments like valve implantation and sternal closure.
Collapse
Affiliation(s)
- Johanna Larsson
- Institute of Health and Care Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Sofia Sutherland
- Institute of Health and Care Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Åsa Söderström
- Department of Anaesthesia and Intensive Care, Sahlgrenska University Hospital, Gothenburg, Sweden
| | | | - Anders Jeppsson
- Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Vitastråket 15, 41345 Gothenburg, Sweden
| | - Elisabeth Hansson Olofsson
- Institute of Health and Care Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Per-Arne Svensson
- Institute of Health and Care Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Vitastråket 15, 41345 Gothenburg, Sweden
| |
Collapse
|
27
|
Connolly-Andersen AM, Sundberg E, Ahlm C, Hultdin J, Baudin M, Larsson J, Dunne E, Kenny D, Lindahl TL, Ramström S, Nilsson S. Increased Thrombopoiesis and Platelet Activation in Hantavirus-Infected Patients. J Infect Dis 2015; 212:1061-9. [PMID: 25762786 DOI: 10.1093/infdis/jiv161] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 03/06/2015] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Thrombocytopenia is a common finding during viral hemorrhagic fever, which includes hemorrhagic fever with renal syndrome (HFRS). The 2 main causes for thrombocytopenia are impaired thrombopoiesis and/or increased peripheral destruction of platelets. In addition, there is an increased intravascular coagulation risk during HFRS, which could be due to platelet activation. METHODS Thrombopoiesis was determined by quantification of platelet counts, thrombopoietin, immature platelet fraction, and mean platelet volume during HFRS. The in vivo platelet activation was determined by quantification of soluble P-selectin (sP-selectin) and glycoprotein VI (sGPVI). The function of circulating platelets was determined by ex vivo stimulation followed by flow cytometry analysis of platelet surface-bound fibrinogen and P-selectin exposure. Intravascular coagulation during disease was determined by scoring for disseminated intravascular coagulation (DIC) and recording thromboembolic complications. RESULTS The levels of thrombopoietin, immature platelet fraction, and mean platelet volume all indicate increased thrombopoiesis during HFRS. Circulating platelets had reduced ex vivo function during disease compared to follow-up. Most interestingly, we observed significantly increased in vivo platelet activation in HFRS patients with intravascular coagulation (DIC and thromboembolic complications) as shown by sP-selectin and sGPVI levels. CONCLUSIONS HFRS patients have increased thrombopoiesis and platelet activation, which contributes to intravascular coagulation.
Collapse
Affiliation(s)
| | - Erik Sundberg
- Infectious Diseases, Department of Clinical Microbiology Clinical Chemistry, Department of Medical Biosciences, Umeå University, Sweden
| | - Clas Ahlm
- Infectious Diseases, Department of Clinical Microbiology
| | - Johan Hultdin
- Clinical Chemistry, Department of Medical Biosciences, Umeå University, Sweden
| | - Maria Baudin
- Infectious Diseases, Department of Clinical Microbiology
| | - Johanna Larsson
- Clinical Chemistry, Department of Medical Biosciences, Umeå University, Sweden
| | - Eimear Dunne
- Clinical Research Centre, Royal College of Surgeons in Ireland, Dublin
| | - Dermot Kenny
- Clinical Research Centre, Royal College of Surgeons in Ireland, Dublin
| | - Tomas L Lindahl
- Department of Clinical and Experimental Medicine, Linköping University, Sweden
| | - Sofia Ramström
- Department of Clinical and Experimental Medicine, Linköping University, Sweden
| | - Sofie Nilsson
- Clinical Chemistry, Department of Medical Biosciences, Umeå University, Sweden
| |
Collapse
|
28
|
Burza M, Enquist H, Jurgilaitis A, Nygaard J, Larsson J. Dispersion and monochromatization of x-rays using a beryllium prism. Opt Express 2015; 23:620-627. [PMID: 25835820 DOI: 10.1364/oe.23.000620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We demonstrate experimentally and numerically that an x-ray prism made of beryllium can be used to disperse and monochromatize x-rays. A polished beryllium cuboid was employed as refractive and dispersive optics. The results of a proof-of-principle experiment and methods of performance optimization are presented. The spatial separation of undulator harmonics and their subsequent selection using a slit are described. A numerical study, assuming realistic beam and beamline parameters, suggests that undulator harmonics can be spatially separated in the range from 3 keV to beyond 20 keV, while maintaining throughput above 50%. Refractive optics is particularly suitable for low-repetition-rate sources such as free-electron lasers and other LINAC-based short-pulse sources.
Collapse
|
29
|
Elgzyri T, Larsson J, Nyberg P, Thörne J, Eriksson KF, Apelqvist J. Early revascularization after admittance to a diabetic foot center affects the healing probability of ischemic foot ulcer in patients with diabetes. Eur J Vasc Endovasc Surg 2014; 48:440-6. [PMID: 25106090 DOI: 10.1016/j.ejvs.2014.06.041] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [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: 03/15/2014] [Accepted: 06/23/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVES There is limited information about whether time from recognition of decreased perfusion to revascularization affects the probability of healing in a patient with a diabetic foot ulcer. The aim of the present study was to examine whether time to revascularization after referral to a multidisciplinary foot center was related to the outcome of foot ulcers in patients with diabetes and severe peripheral arterial disease (PAD). METHODS Patients with diabetes, a foot ulcer, and a systolic toe pressure <45 mmHg or an ankle pressure <80 mmHg were prospectively included at the foot center, and considered for revascularization according to a preset protocol. All patients underwent invasive revascularization, either percutaneous transluminal angioplasty (PTA) or reconstructive vascular surgery. All patients had continuous follow-up until healing or death irrespective of the type of revascularization. RESULTS A total of 478 patients were included (age 74 [range 66-80] years, 60% males), of whom 315 patients (66%) had PTA, and 163 (34%) had reconstructive surgery. Of the 478 patients, 217 (45%) healed primarily, 88 (19%) healed after a minor amputation, 76 (16%) healed after a major amputation and 92 patients (19%) died unhealed. The median time from inclusion in the study to revascularization was 8 weeks (3-18 weeks). Time to vascular intervention within 8 weeks (p < .001), maximum Wagner grade reached <3 (p < .001), absence of peripheral edema (p = .033), and presence of intermittent claudication (p = .001) were related to a higher probability of healing. CONCLUSIONS Time to revascularization and extent of tissue damage were related to the probability of healing of ischemic foot ulcer in patients with diabetes over time. In the presence of a decreased perfusion in a patient with diabetes and a foot ulcer not only revascularization per se but also timing of revascularization is important for the possibility of healing without a major amputation.
Collapse
Affiliation(s)
- T Elgzyri
- Department of Endocrinology, Skåne University Hospital, Malmö, Sweden.
| | - J Larsson
- Department of Orthopaedic Surgery, Skåne University Hospital, Lund, Sweden
| | - P Nyberg
- Department of Occupational Medicine, Skåne University Hospital, Lund, Sweden
| | - J Thörne
- Department of Surgery, Helsingborg's Hospital, Helsingborg, Sweden
| | - K-F Eriksson
- Vascular Department, Skåne University Hospital, Malmö, Sweden
| | - J Apelqvist
- Department of Endocrinology, Skåne University Hospital, Malmö, Sweden
| |
Collapse
|
30
|
Jurgilaitis A, Enquist H, Andreasson BP, Persson AIH, Borg BM, Caroff P, Dick KA, Harb M, Linke H, Nüske R, Wernersson LE, Larsson J. Time-resolved X-ray diffraction investigation of the modified phonon dispersion in InSb nanowires. Nano Lett 2014; 14:541-546. [PMID: 24387246 DOI: 10.1021/nl403596b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The modified phonon dispersion is of importance for understanding the origin of the reduced heat conductivity in nanowires. We have measured the phonon dispersion for 50 nm diameter InSb (111) nanowires using time-resolved X-ray diffraction. By comparing the sound speed of the bulk (3880 m/s) and that of a classical thin rod (3600 m/s) to our measurement (2880 m/s), we conclude that the origin of the reduced sound speed and thereby to the reduced heat conductivity is that the C44 elastic constant is reduced by 35% compared to the bulk material.
Collapse
Affiliation(s)
- A Jurgilaitis
- Department of Physics and ‡MAX IV Laboratory, Lund University , P.O. Box 118, SE-221 00 Lund, Sweden
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Preece R, Burgess JM, von Kienlin A, Bhat PN, Briggs MS, Byrne D, Chaplin V, Cleveland W, Collazzi AC, Connaughton V, Diekmann A, Fitzpatrick G, Foley S, Gibby M, Giles M, Goldstein A, Greiner J, Gruber D, Jenke P, Kippen RM, Kouveliotou C, McBreen S, Meegan C, Paciesas WS, Pelassa V, Tierney D, van der Horst AJ, Wilson-Hodge C, Xiong S, Younes G, Yu HF, Ackermann M, Ajello M, Axelsson M, Baldini L, Barbiellini G, Baring MG, Bastieri D, Bellazzini R, Bissaldi E, Bonamente E, Bregeon J, Brigida M, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caraveo PA, Cecchi C, Charles E, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Claus R, Cohen-Tanugi J, Cominsky LR, Conrad J, D'Ammando F, de Angelis A, de Palma F, Dermer CD, Desiante R, Digel SW, Di Venere L, Drell PS, Drlica-Wagner A, Favuzzi C, Franckowiak A, Fukazawa Y, Fusco P, Gargano F, Gehrels N, Germani S, Giglietto N, Giordano F, Giroletti M, Godfrey G, Granot J, Grenier IA, Guiriec S, Hadasch D, Hanabata Y, Harding AK, Hayashida M, Iyyani S, Jogler T, Jóhannesson G, Kawano T, Knödlseder J, Kocevski D, Kuss M, Lande J, Larsson J, Larsson S, Latronico L, Longo F, Loparco F, Lovellette MN, Lubrano P, Mayer M, Mazziotta MN, Michelson PF, Mizuno T, Monzani ME, Moretti E, Morselli A, Murgia S, Nemmen R, Nuss E, Nymark T, Ohno M, Ohsugi T, Okumura A, Omodei N, Orienti M, Paneque D, Perkins JS, Pesce-Rollins M, Piron F, Pivato G, Porter TA, Racusin JL, Rainò S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Ritz S, Roth M, Ryde F, Sartori A, Scargle JD, Schulz A, Sgrò C, Siskind EJ, Spandre G, Spinelli P, Suson DJ, Tajima H, Takahashi H, Thayer JG, Thayer JB, Tibaldo L, Tinivella M, Torres DF, Tosti G, Troja E, Usher TL, Vandenbroucke J, Vasileiou V, Vianello G, Vitale V, Werner M, Winer BL, Wood KS, Zhu S. The First Pulse of the Extremely Bright GRB 130427A: A Test Lab for Synchrotron Shocks. Science 2014; 343:51-4. [DOI: 10.1126/science.1242302] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- R Preece
- Department of Space Science, University of Alabama in Huntsville, Huntsville, AL 35899, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Jurgilaitis A, Enquist H, Harb M, Dick KA, Borg BM, Nüske R, Wernersson LE, Larsson J. Measurements of light absorption efficiency in InSb nanowires. Struct Dyn 2014; 1:014502. [PMID: 26913673 PMCID: PMC4711595 DOI: 10.1063/1.4833559] [Citation(s) in RCA: 3] [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: 09/02/2013] [Accepted: 10/31/2013] [Indexed: 06/02/2023]
Abstract
We report on measurements of the light absorption efficiency of InSb nanowires. The absorbed 70 fs light pulse generates carriers, which equilibrate with the lattice via electron-phonon coupling. The increase in lattice temperature is manifested as a strain that can be measured with X-ray diffraction. The diffracted X-ray signal from the excited sample was measured using a streak camera. The amount of absorbed light was deduced by comparing X-ray diffraction measurements with simulations. It was found that 3.0(6)% of the radiation incident on the sample was absorbed by the nanowires, which cover 2.5% of the sample.
Collapse
Affiliation(s)
- A Jurgilaitis
- Department of Physics, Lund University , P.O. Box 118, SE-221 00 Lund, Sweden
| | - H Enquist
- MAX IV laboratory, Lund University , P.O. Box 118, Lund, Sweden
| | - M Harb
- Department of Physics, Lund University , P.O. Box 118, SE-221 00 Lund, Sweden
| | | | - B M Borg
- Department of Physics, Lund University , P.O. Box 118, SE-221 00 Lund, Sweden
| | - R Nüske
- Department of Physics, Lund University , P.O. Box 118, SE-221 00 Lund, Sweden
| | - L-E Wernersson
- Department of Electrical and Information Technology, Lund University , P.O. Box 118, SE-221 00 Lund, Sweden
| | - J Larsson
- Department of Physics, Lund University , P.O. Box 118, SE-221 00 Lund, Sweden
| |
Collapse
|
33
|
D’Ammando F, Orienti M, Finke J, Larsson J, Giroletti M. Relativistic jets in narrow-line Seyfert 1 galaxies. New discoveries and open questions. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20136105006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
34
|
Torngren K, Ohman J, Salmi H, Larsson J, Erlinge D. Ticagrelor improves peripheral arterial function in patients with a previous acute coronary syndrome. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.4529] [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
|
35
|
Elgzyri T, Larsson J, Thörne J, Eriksson KF, Apelqvist J. Outcome of Ischemic Foot Ulcer in Diabetic Patients Who Had no Invasive Vascular Intervention. Eur J Vasc Endovasc Surg 2013; 46:110-7. [DOI: 10.1016/j.ejvs.2013.04.013] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 04/05/2013] [Indexed: 11/25/2022]
|
36
|
Nicoul M, Quirin F, Lindenberg A, Barty A, Fritz D, Zhu D, Lemke H, Chollet M, Reis D, Chen J, Ghimire S, Trigo M, Fuchs M, Gaffney K, Larsson J, Becker T, Meyer S, Payer T, Meyer zu Heringdorf F, Horn von Hoegen M, Jerman M, Sokolowski-Tinten K. Ultrafast laser-induced melting and ablation studied by time-resolved diffuse X-ray scattering. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20134104013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
37
|
Larsson J, Holmström IK. How excellent anaesthetists perform in the operating theatre: a qualitative study on non-technical skills. Br J Anaesth 2012; 110:115-21. [PMID: 23048067 DOI: 10.1093/bja/aes359] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Teaching trainees to become competent professionals who can keep the complex system of anaesthesia safe is important. From a safety point of view, non-technical skills such as smooth cooperation and good communication deserve as much attention as theoretical knowledge and practical skills, which by tradition have dominated training programmes in anaesthesiology. This study aimed to describe the way excellent anaesthetists act in the operating theatre, as seen by experienced anaesthesia nurses. METHODS The study had a descriptive and qualitative design. Five focus group interviews with three or four experienced Swedish anaesthesia nurses in each group were conducted. Interviews were analysed by using a qualitative method, looking for common themes. RESULTS Six themes were found: (A) structured, responsible, and focused way of approaching work tasks; (B) clear and informative, briefing the team about the action plan before induction; (C) humble to the complexity of anaesthesia, admitting own fallibility; (D) patient-centred, having a personal contact with the patient before induction; (D) fluent in practical work without losing overview; and (F) calm and clear in critical situations, being able to change to a strong leading style. CONCLUSIONS Experienced anaesthesia nurses gave nuanced descriptions of how excellent anaesthetists behave and perform. These aspects of the anaesthetist's work often attract too little attention in specialist training, notwithstanding their importance for safety and fluency at work. Creating role models based on studies like the present one could be one way of increasing safety in anaesthesia.
Collapse
Affiliation(s)
- J Larsson
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden.
| | | |
Collapse
|
38
|
Unosson M, Larsson J, Ek AC, Bjurulf P. Effects of dietary supplement on functional condition and clinical outcome measured with a modified Norton scale. Clin Nutr 2012; 11:134-9. [PMID: 16839988 DOI: 10.1016/0261-5614(92)90073-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/1991] [Accepted: 03/18/1992] [Indexed: 11/28/2022]
Abstract
Elderly long-term care patients (n = 501) were randomly allocated to receive dietary supplementation (400 kcal/day) in addition to a normal hospital diet, or normal hospital diet only, for 26 weeks. The patients' functional condition was assessed by a modified Norton scale comprising mental condition, activity, mobility, food intake, fluid intake, incontinence and general physical state. Nutritional status was assessed by anthropometry, serum protein analysis and delayed hypersensitivity skin tests. Improvements during the first 8 weeks were seen in activity and general physical condition in the supplemented group, and in mobility and general physical condition in the control group. After 8 weeks the supplemented group showed a significantly higher level of activity (p < 0.05) compared to the control group. We conclude that in long-term geriatric care nutritional supplements help to maintain and improve the patients function.
Collapse
Affiliation(s)
- M Unosson
- Department of Caring Sciences, Faculty of Health Sciences, University Hospital, S-581 85, Linköping, Sweden
| | | | | | | |
Collapse
|
39
|
Ek AC, Unosson M, Larsson J, Von Schenck H, Bjurulf P. The development and healing of pressure sores related to the nutritional state. Clin Nutr 2012; 10:245-50. [PMID: 16839927 DOI: 10.1016/0261-5614(91)90002-t] [Citation(s) in RCA: 148] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/1991] [Accepted: 06/24/1991] [Indexed: 11/16/2022]
Abstract
The aims of the study were to investigate the relationship between nutritional state and the development of pressure sores and to test the hypothesis that supplementary nutritional support might prevent pressure sore development and improve healing. Newly admitted long-term care patients hospitalised for more than 3 weeks were included and randomised into an experimental and a control group. The nutritional state was evaluated using serum protein analyses, anthropometry and the delayed hypersensitivity skin test. Further, the patients' condition was assessed weekly using a modified Norton scale. The experimental group received extra nutritional support. Significantly more patients with protein-energy malnutrition had, or developed, pressure sores. Regression analyses indicated albumin, mobility, activity and food intake as predictors for pressure sores. Patients who received extra nutritional support tended to develop fewer pressure sores and to heal existing pressure sores to a greater extent than the control group, although this did not reach statistical significance.
Collapse
Affiliation(s)
- A C Ek
- Departments of Caring Sciences, Surgery, Clinical Chemistry and Preventive and Social Medicine, University Hospital, S-581 85, Linköping, Sweden
| | | | | | | | | |
Collapse
|
40
|
Arakelian E, Gunningberg L, Larsson J, Norlén K, Mahteme H. Factors influencing early postoperative recovery after cytoreductive surgery and hyperthermic intraperitoneal chemotherapy. Eur J Surg Oncol 2011; 37:897-903. [DOI: 10.1016/j.ejso.2011.06.003] [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] [Received: 03/29/2011] [Revised: 05/17/2011] [Accepted: 06/13/2011] [Indexed: 11/27/2022] Open
|
41
|
Svensson H, Apelqvist J, Larsson J, Lindholm E, Eneroth M. Minor amputation in patients with diabetes mellitus and severe foot ulcers achieves good outcomes. J Wound Care 2011; 20:261-2, 264, 266 passim. [PMID: 21727875 DOI: 10.12968/jowc.2011.20.6.261] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To analyse the outcome of minor amputations (through, or distal to, the ankle joint) in patients with diabetes. METHOD All diabetic patients in a defined population undergoing one or more minor amputation between 1982 and 2006 were investigated according to a standardised protocol and were followed until final outcome (healing or death). A total of 410 consecutive amputations in 309 patients with a median age of 73 (32-93) years were identified. RESULTS In 94% of amputations, deep infection (39%) and/or gangrene (55%) was present. Severe peripheral vascular disease or critical limb ischaemia was present in 61% of amputations. 261/410 (64%) of the amputations healed at a level below the ankle joint; 69/410 (17%) healed after a re-amputation above the ankle joint; in 76/410 of amputations (19%), the patient died before healing could occur. In surviving patients, 79% of the amputations healed below the ankle. Median healing time for amputations that healed below the ankle was 26 (2-250) weeks; 21% of amputations required a re-amputation above the ankle. None of the analysed parameters excluded the possibility of healing below the ankle. CONCLUSION In this population-based survey, the goal of avoiding major amputation was achieved in almost two thirds of minor amputations, but at the price of long healing times. In almost all amputations, the patient had deep infection and/or gangrene. In spite of this, 64% of all amputations, and 79% of amputations in surviving patients, healed at a level below the ankle. This indicates that minor amputations in these patients are worthwhile. DECLARATION OF INTEREST None.
Collapse
Affiliation(s)
- H Svensson
- Department of Orthopaedics, Skane University Hospital, Malmö, Sweden.
| | | | | | | | | |
Collapse
|
42
|
Abstract
INTRODUCTION Statistical process control (SPC) charts have not been widely used to monitor workplace health and work environments. This research and effort to develop a more accurate and easy to use management control system for employee health is important from a humanistic, societal and economic standpoint, as well as complying with laws that regulate work environments. OBJECTIVE The purpose of the study is to design and discuss control charts as an early warning system for workplace health outcomes to promote workplace health management. Another purpose is to discuss relevant factors in the concept of the out-of-control action plan (OCAP) as a response when a chart warns that the workplace process may be malfunctioning. PARTICIPANTS Two Swedish organizations were selected as case study organizations: a department at a university and an elderly care operation in a municipality. METHODS This study was explorative and should be seen as a starting point in learning how to use control charts for workplace health management. Self-assessed general health and new sick-cases per employee were selected as indicators for the control charts. RESULTS An integrated early warning system with Cumulative Sums- and Shewhart-charts are presented to show a possible method as to how an early warning system can be structured through the use of statistical control charts. CONCLUSIONS The conclusion of this study is that control charts, along with well-designed implementation, make up a powerful and useable managerial early-warning system which promotes workplace health and helps to prevent sickness absence.
Collapse
Affiliation(s)
- J Larsson
- Department of Engineering and Sustainable Development, Quality Technology and Management, Mid Sweden University, Östersund, Sweden.
| | | | | | | |
Collapse
|
43
|
Abstract
INTRODUCTION Statistical process control (SPC) charts have not been widely used to monitor workplace health and work environments. This research and effort to develop a more accurate and easy to use management control system for employee health is important from a humanistic, societal and economic standpoint, as well as complying with laws that regulate work environments. OBJECTIVE The purpose of the study is to design and discuss control charts as an early warning system for workplace health outcomes to promote workplace health management. Another purpose is to discuss relevant factors in the concept of the out-of-control action plan (OCAP) as a response when a chart warns that the workplace process may be malfunctioning. PARTICIPANTS Two Swedish organizations were selected as case study organizations: a department at a university and an elderly care operation in a municipality. METHODS This study was explorative and should be seen as a starting point in learning how to use control charts for workplace health management. Self-assessed general health and new sick-cases per employee were selected as indicators for the control charts. RESULTS An integrated early warning system with Cumulative Sums- and Shewhart-charts are presented to show a possible method as to how an early warning system can be structured through the use of statistical control charts. CONCLUSIONS The conclusion of this study is that control charts, along with well-designed implementation, make up a powerful and useable managerial early-warning system which promotes workplace health and helps to prevent sickness absence.
Collapse
Affiliation(s)
- J Larsson
- Department of Engineering and Sustainable Development, Quality Technology and Management, Mid Sweden University, Östersund, Sweden.
| | | | | | | |
Collapse
|
44
|
Furuhjelm C, Warstedt K, Fagerås M, Fälth-Magnusson K, Larsson J, Fredriksson M, Duchén K. Allergic disease in infants up to 2 years of age in relation to plasma omega-3 fatty acids and maternal fish oil supplementation in pregnancy and lactation. Pediatr Allergy Immunol 2011; 22:505-14. [PMID: 21332799 DOI: 10.1111/j.1399-3038.2010.01096.x] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [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: 11/30/2022]
Abstract
We have previously reported a protective effect of maternal omega-3 long-chain polyunsaturated fatty acids (ω-3 LCPUFA) supplementation in pregnancy and lactation on IgE-associated eczema and food allergy in the infant during the first year of life. Here we investigate whether the effects of the LCPUFA supplementation on IgE-associated diseases last up to 2 yr of age and assess the relationship between plasma proportions of ω-3 PUFAs and the frequency and severity of infant allergic disease. 145 pregnant women, at risk of having an allergic infant, were randomized to daily supplementation with 1.6 g eicosapentaenoic acid (EPA) and 1.1 g docosahexaenoic acid (DHA) or placebo starting in the 25th gestational week and continuing through 3.5 months of breastfeeding. Clinical examinations, skin prick tests and analysis of maternal and infant plasma phospholipid fatty acids and infant specific IgE were performed. No difference in the prevalence of allergic symptoms was found between the intervention groups. The cumulative incidence of IgE-associated disease was lower in the ω-3-supplemented group (6/54, 13%) compared with the placebo group (19/62, 30%, p=0.01). Higher maternal and infant proportions of DHA and EPA were associated with lower prevalence of IgE associated disease (p=0.01-0.05) in a dose-dependent manner. Higher maternal and infant proportions of DHA and EPA were found if the infants presented none, when compared with multiple allergic symptoms, (p<0.05) regardless of sensitization. In summary, the ω-3 supplementation offered no obvious preventive effect on the prevalence of clinical symptoms of allergic disease, but the decrease in cumulative incidence of IgE-associated disease seen during the first year still remained until 2 yr of age. Furthermore, high proportions of DHA and EPA in maternal and infant plasma phospholipids were associated with less IgE-associated disease and a reduced severity of the allergic phenotype.
Collapse
Affiliation(s)
- Catrin Furuhjelm
- Division of Pediatrics, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden.
| | | | | | | | | | | | | |
Collapse
|
45
|
Gaudin J, Keitel B, Jurgilaitis A, Nüske R, Guérin L, Larsson J, Mann K, Schäfer B, Tiedtke K, Trapp A, Tschentscher T, Yang F, Wulff M, Sinn H, Flöter B. Time-resolved investigation of nanometer scale deformations induced by a high flux x-ray beam. Opt Express 2011; 19:15516-15524. [PMID: 21934914 DOI: 10.1364/oe.19.015516] [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: 05/31/2023]
Abstract
We present results of a time-resolved pump-probe experiment where a Si sample was exposed to an intense 15 keV beam and its surface monitored by measuring the wavefront deformation of a reflected optical laser probe beam. By reconstructing and back propagating the wavefront, the deformed surface can be retrieved for each time step. The dynamics of the heat bump, build-up and relaxation, is followed with a spatial resolution in the nanometer range. The results are interpreted taking into account results of finite element method simulations. Due to its robustness and simplicity this method should find further developments at new x-ray light sources (FEL) or be used to gain understanding on thermo-dynamical behavior of highly excited materials.
Collapse
Affiliation(s)
- J Gaudin
- European XFEL, Albert-Einstein-Ring 19, D-22761 Hamburg, Germany.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Arakelian E, Gunningberg L, Larsson J. Defining operating room efficiency from the perspective of the staff member and the supervisor. Int J Qual Health Care 2011. [DOI: 10.1093/intqhc/mzr016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
47
|
Arakelian E, Gunningberg L, Larsson J. How operating room efficiency is understood in a surgical team: a qualitative study. Int J Qual Health Care 2010; 23:100-6. [DOI: 10.1093/intqhc/mzq063] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
48
|
Abstract
BACKGROUND When using epidural anaesthesia (EDA) for pain relief after major surgery, a failure rate of 10% is common. A crucial step in improving the care of patients with EDA is to define the position of the epidural catheter. The aim of this study was to investigate how much time it takes to determine whether the block is sufficient by assessing the extent of loss of cold sensation before induction of anaesthesia. METHODS One hundred patients listed for abdominal surgery were included in the study. After an epidural catheter had been inserted and an intrathecal or an intravenous position had been made unlikely by the use of a test dose, the patient was given a bolus dose of local anaesthetic plus an opioid in the epidural catheter. The epidural block was tested every 2 min, starting at 5 min and ending at 15 min. When at least four segments were blocked bilaterally, the testing was stopped, the time was noted and the patient was anaesthetised. RESULTS An epidural block was demonstrated after 5-6 min in 37 patients, after 7-8 min in 43 additional patients and after 9-10 min in 15 patients. In one patient, it took 12 min and in three patients, it took 15 min. In two patients, no epidural block could be demonstrated. CONCLUSION Testing an epidural anaesthetic before the induction of anaesthesia takes only 5-10 extra minutes. Knowing whether the catheter is correctly placed means better quality of care, giving the anaesthetist better prerequisites for taking care of the patient post-operatively.
Collapse
Affiliation(s)
- J Larsson
- Department of Public Health and Caring Sciences, University of Uppsala, Uppsala, Sweden.
| | | |
Collapse
|
49
|
Larsson J, Sanner M. Doing a good job and getting something good out of it: on stress and well-being in anaesthesia. Br J Anaesth 2010; 105:34-7. [DOI: 10.1093/bja/aeq125] [Citation(s) in RCA: 30] [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: 11/13/2022] Open
|
50
|
Kvistholm Jensen A, Ethelberg S, Smith B, Møller Nielsen E, Larsson J, Mølbak K, Christensen JJ, Kemp M. Substantial increase in listeriosis, Denmark 2009. Euro Surveill 2010. [DOI: 10.2807/ese.15.12.19522-en] [Citation(s) in RCA: 16] [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: 11/20/2022] Open
Abstract
In 2009, 97 cases of listeriosis were reported in Denmark (1.8 per 100,000), a significant rise over the previous year. The increase was seen both in cases of bacteraemia and meningitis and affected mainly people aged 70 years and older. A foodborne outbreak of eight cases was identified by pulsed-field gel electrophoresis typing. No explanation has so far been found for the marked increase in incidence. An increasing trend has been observed since 2003 and possible explanations are discussed.
Collapse
Affiliation(s)
- A Kvistholm Jensen
- Department of Microbiological Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark
| | - S Ethelberg
- Department of Epidemiology, Statens Serum Institut, Copenhagen, Denmark
- Department of Microbiological Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark
| | - B Smith
- Department of Microbiological Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark
| | - E Møller Nielsen
- Department of Microbiological Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark
| | - J Larsson
- Department of Microbiological Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark
| | - K Mølbak
- Department of Epidemiology, Statens Serum Institut, Copenhagen, Denmark
| | - J J Christensen
- Department of Microbiological Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark
| | - M Kemp
- Department of Microbiological Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark
| |
Collapse
|