1
|
Møller-Bisgaard S, Hørslev-Petersen K, Ejbjerg B, Hetland ML, Christensen R, Ørnbjerg LM, Glinatsi D, Møller JM, Boesen M, Stengaard-Pedersen K, Madsen OR, Jensen B, Villadsen JA, Hauge EM, Bennett P, Hendricks O, Asmussen K, Kowalski M, Lindegaard H, Bliddal H, Krogh NS, Ellingsen T, Nielsen AH, Larsen L, Jurik AG, Thomsen HS, Østergaard M. Effect of initiating biologics compared to intensifying conventional DMARDs on clinical and MRI outcomes in established rheumatoid arthritis patients in clinical remission: Secondary analyses of the IMAGINE-RA trial. Scand J Rheumatol 2021; 51:268-278. [PMID: 34474649 DOI: 10.1080/03009742.2021.1935312] [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: 10/20/2022]
Abstract
Objectives: To compare the effect of treat-to-target-based escalations in conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) and biologics on clinical disease activity and magnetic resonance imaging (MRI) inflammation in a rheumatoid arthritis (RA) cohort in clinical remission.Method: One-hundred patients with established RA, Disease Activity Score based on 28-joint count-C-reactive protein (DAS28-CRP) < 3.2, and no swollen joints (hereafter referred to as 'in clinical remission') who received csDMARDs underwent clinical evaluation and MRI of the wrist and second to fifth metacarpophalangeal joints every 4 months. They followed a 2 year MRI treatment strategy targeting DAS28-CRP ≤ 3.2, no swollen joints, and absence of MRI osteitis, with predefined algorithmic treatment escalation: first: increase in csDMARDs; second: adding a biologic; third: switch biologic. MRI osteitis and Health Assessment Questionnaire (HAQ) (co-primary outcomes) and MRI combined inflammation and Simplified Disease Activity Index (SDAI) (key secondary outcomes) were assessed 4 months after treatment change and expressed as estimates of group differences. Statistical analyses were based on the intention-to-treat population analysed using repeated-measures mixed models.Escalation to first biologic compared to csDMARD escalation more effectively reduced MRI osteitis (difference between least squares means 1.8, 95% confidence interval 1.0-2.6), HAQ score (0.08, 0.03-0.1), MRI combined inflammation (2.5, 0.9-4.1), and SDAI scores (2.7, 1.9-3.5).Treat-to-target-based treatment escalations to biologics compared to escalation in csDMARDs more effectively improved MRI inflammation, physical function, and clinical disease activity in patients with established RA in clinical remission. Treatment escalation in RA patients in clinical remission reduces clinical and MRI-assessed disease activity.Trial registration: Clinicaltrials.gov identifier: NCT01656278.
Collapse
Affiliation(s)
- S Møller-Bisgaard
- Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup, Denmark.,Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark
| | - K Hørslev-Petersen
- Department of Rheumatology, Sønderborg Sygehus, Danish Hospital for Rheumatic Diseases, Sønderborg, Denmark.,Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - B Ejbjerg
- Department of Rheumatology, Slagelse Hospital, Slagelse, Denmark
| | - M L Hetland
- Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - R Christensen
- Musculoskeletal Statistics Unit, The Parker Institute, Frederiksberg Hospital, Frederiksberg, Denmark.,Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - L M Ørnbjerg
- Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup, Denmark
| | - D Glinatsi
- Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup, Denmark.,Department of Rheumatology, Skaraborg Hospital, Skövde, Sweden
| | - J M Møller
- Department of Radiology, Herlev Hospital, Herlev, Denmark
| | - M Boesen
- Department of Radiology, Frederiksberg Hospital, Frederiksberg, Denmark
| | - K Stengaard-Pedersen
- Department of Rheumatology, Department of Clinical Medicine, Aarhus University Hospital, Aarhus University, Aarhus, Denmark
| | - O R Madsen
- Center for Rheumatology and Spine Diseases, Copenhagen University Hospital Gentofte, Hellerup, Denmark
| | - B Jensen
- Center for Rheumatology and Spine Diseases, Frederiksberg Hospital, Frederiksberg, Denmark
| | - J A Villadsen
- Department of Rheumatology, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - E M Hauge
- Department of Rheumatology, Department of Clinical Medicine, Aarhus University Hospital, Aarhus University, Aarhus, Denmark
| | - P Bennett
- Center for Rheumatology and Spine Diseases, Copenhagen University Hospital Gentofte, Hellerup, Denmark
| | - O Hendricks
- Department of Rheumatology, Sønderborg Sygehus, Danish Hospital for Rheumatic Diseases, Sønderborg, Denmark.,Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - K Asmussen
- Center for Rheumatology and Spine Diseases, Frederiksberg Hospital, Frederiksberg, Denmark
| | - M Kowalski
- Department of Rheumatology, Sygehus Vendsyssel i Hjørring, Hjørring, Denmark
| | - H Lindegaard
- Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - H Bliddal
- The Parker Institute, Department of Rheumatology, Frederiksberg Hospital, Frederiksberg, Denmark
| | | | - T Ellingsen
- Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - A H Nielsen
- Department of Radiology, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - L Larsen
- Department of Radiology, Herlev Hospital, Herlev, Denmark
| | - A G Jurik
- Department of Radiology, Aarhus University Hospital, Aarhus, Denmark
| | - H S Thomsen
- Department of Radiology, Herlev Hospital, Herlev, Denmark
| | - M Østergaard
- Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
2
|
Lorenzen E, Kallehauge J, Byskov C, Dahlrot R, Haslund C, Guldberg T, Lassen-Ramshad Y, Lukacova S, Muhic A, Nyström P, Haldbo-Classen L, Bahij I, Larsen L, Weber B, Rønn Hansen C, Hansen C. PH-0608 A national study on the inter-observer variability in delineation of organs at risk in the brain. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07380-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
3
|
Van Zwol W, Rimbert A, Wolters K, Larsen L, Huijkman N, Kloosterhuis N, Van De Sluis B, Zimmermann P, Kuivenhoven J. A novel gene affecting VLDL assembly/secretion. Atherosclerosis 2021. [DOI: 10.1016/j.atherosclerosis.2021.06.038] [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: 10/20/2022]
|
4
|
Munk M, Poulsen FR, Larsen L, Nordström CH, Nielsen TH. Cerebral Metabolic Changes Related to Oxidative Metabolism in a Model of Bacterial Meningitis Induced by Lipopolysaccharide. Neurocrit Care 2019; 29:496-503. [PMID: 29508265 DOI: 10.1007/s12028-018-0509-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 12/27/2022]
Abstract
BACKGROUND Cerebral mitochondrial dysfunction is prominent in the pathophysiology of severe bacterial meningitis. In the present study, we hypothesize that the metabolic changes seen after intracisternal lipopolysaccharide (LPS) injection in a piglet model of meningitis is compatible with mitochondrial dysfunction and resembles the metabolic patterns seen in patients with bacterial meningitis. METHODS Eight pigs received LPS injection in cisterna magna, and four pigs received NaCl in cisterna magna as a control. Biochemical variables related to energy metabolism were monitored by intracerebral microdialysis technique and included interstitial glucose, lactate, pyruvate, glutamate, and glycerol. The intracranial pressure (ICP) and brain tissue oxygen tension (PbtO2) were also monitored along with physiological variables including mean arterial pressure, blood glucose, lactate, and partial pressure of O2 and CO2. Pigs were monitored for 60 min at baseline and 240 min after LPS/NaCl injection. RESULTS After LPS injection, a significant increase in cerebral lactate/pyruvate ratio (LPR) compared to control group was registered (p = 0.01). This increase was due to a significant increased lactate with stable and normal values of pyruvate. No significant change in PbtO2 or ICP was registered. No changes in physiological variables were observed. CONCLUSIONS The metabolic changes after intracisternal LPS injection is compatible with disturbance in the oxidative metabolism and partly due to mitochondrial dysfunction with increasing cerebral LPR due to increased lactate and normal pyruvate, PbtO2, and ICP. The metabolic pattern resembles the one observed in patients with bacterial meningitis. Metabolic monitoring in these patients is feasible to monitor for cerebral metabolic derangements otherwise missed by conventional intensive care monitoring.
Collapse
Affiliation(s)
- M Munk
- University of Southern Denmark School of Medicine, Odense, Denmark
| | - F R Poulsen
- Department of Neurosurgery, Odense University Hospital, Odense, Denmark
| | - L Larsen
- Department of Infectious Diseases, Odense University Hospital, Odense, Denmark
| | - C H Nordström
- Department of Neurosurgery, Odense University Hospital, Odense, Denmark
| | - T H Nielsen
- Department of Neurosurgery, Odense University Hospital, Odense, Denmark. .,Department of Neurosurgery, Stanford University School of Medicine, 300 Pasteur Drive, R209, Stanford, CA, 94305-5327, USA.
| |
Collapse
|
5
|
Hilligsøe M, Eriksen N, Jacobsen M, Kaagaard L, Vinter-Jensen L, Rasmussen H, Larsen L, Holst M. Is body composition related to efficacy of biological treatment with TNF-Α inhibitors in patients with crohn’s disease? Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
6
|
Hakyemez IN, Erdem H, Beraud G, Lurdes M, Silva-Pinto A, Alexandru C, Bishop B, Mangani F, Argemi X, Poinot M, Hasbun R, Sunbul M, Akcaer M, Alp S, Demirdal T, Angamuthu K, Amer F, Ragab E, Shehata GA, Ozturk-Engin D, Ozgunes N, Larsen L, Zimmerli S, Sipahi OR, Tukenmez Tigen E, Celebi G, Oztoprak N, Yardimci AC, Cag Y. Correction to: Prediction of unfavorable outcomes in cryptococcal meningitis: results of the multicenter infectious Diseases International Research Initiative (ID-IRI) cryptococcal meningitis study. Eur J Clin Microbiol Infect Dis 2018; 37:1241-1242. [PMID: 29855841 DOI: 10.1007/s10096-018-3281-z] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the original version of this article, Mustafa Sunbul was not included in the list of authors for this article. The name has been added accordingly.
Collapse
Affiliation(s)
- I N Hakyemez
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - H Erdem
- Infectious Diseases International Research Initiative (ID-IRI), Ankara, Turkey. .,Department of Infectious Diseases and Clinical Microbiology, Gulhane Medical Academy, Ankara, Turkey.
| | - G Beraud
- Department of Infectious Diseases, Poitiers University Hospital, Poitiers, France
| | - M Lurdes
- Department of Infectious Diseases, Centro Hospitalar S. João and Faculty of Medicine of University of Porto, Porto, Portugal
| | - A Silva-Pinto
- Department of Infectious Diseases, Centro Hospitalar S. João and Faculty of Medicine of University of Porto, Porto, Portugal
| | - C Alexandru
- Department of Infectious Diseases, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - B Bishop
- Department of Internal Medicine B, Rambam Medical Center, Haifa, Israel
| | - F Mangani
- Department of Infectious and Tropical Diseases, "G. B. Rossi" University Hospital, Verona, Italy
| | - X Argemi
- Department of Infectious Diseases, Nouvel Hôpital Civil, Strasbourg, France
| | - M Poinot
- Department of Infectious and Tropical Diseases, University Hospital of Pontchaillou, Rennes, France
| | - R Hasbun
- Department of Infectious Diseases, The University of Texas Health Science Center at Houston, Medical School, Houston, TX, USA
| | - M Sunbul
- Department of Infectious Diseases and Clinical Microbiology, Ondokuz Mayis University School of Medicine, Samsun, Turkey
| | - M Akcaer
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Medical Academy, Ankara, Turkey
| | - S Alp
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - T Demirdal
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Izmir Katip Celebi University, Izmir, Turkey
| | - K Angamuthu
- Department of Clinical Microbiology, Almana General Hospital, Dammam, Saudi Arabia
| | - F Amer
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - E Ragab
- Diagnostic Microbiology Lab of Alexandria University Hospital, Alexandria, Egypt
| | - G A Shehata
- Department of Neurology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - D Ozturk-Engin
- Department of Infectious Diseases and Clinical Microbiology, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - N Ozgunes
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Okan University, Istanbul, Turkey
| | - L Larsen
- Department of Infectious Diseases, Odense University Hospital, Odense, Denmark
| | - S Zimmerli
- Department of Infectious Diseases, Bern University Hospital and Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - O R Sipahi
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Ege University, Izmir, Turkey
| | - E Tukenmez Tigen
- Department of Infectious Disease and Clinical Microbiology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - G Celebi
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Bulent Ecevit University, Zonguldak, Turkey
| | - N Oztoprak
- Department of Infectious Diseases and Clinical Microbiology, Antalya Training and Research Hospital, Antalya, Turkey
| | - A C Yardimci
- Department of Infectious Diseases and Clinical Microbiology, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - Y Cag
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Istanbul Medeniyet University, Istanbul, Turkey
| |
Collapse
|
7
|
Lauritsen A, Pereira J, Juranyi F, Bordallo H, Larsen L, Benetti A. Probing Water Mobility in Human Dentine with Neutron Spectroscopy. J Dent Res 2018; 97:1017-1022. [DOI: 10.1177/0022034518763051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to investigate hydrogen mobility within innate and demineralized human dentine. Dentine sections from extracted human molars, demineralized or not, were analyzed by combining neutron spectroscopy with thermal analysis. For the thermal analysis of the samples, differential scanning calorimetry and thermal gravimetric analysis, coupled with Fourier transform infrared spectroscopy, were performed. The hydrogen dynamics of water, collagen, and hydroxyl groups present in the samples were investigated via neutron spectroscopy. From the mass loss observed from the thermogravimetric analysis curves up to 600 °C, the same amount of organic content is identified in the samples. From the differential scanning calorimetry curves, a higher change in enthalpy associated with the denaturation of collagen is registered in the demineralized dentine; that is, a structural change occurs in the collagen subsequent to demineralization. Since the intensity measured by neutron spectroscopy is dominated by the signal from hydrogen, in our samples—coming mostly from the bulk-like and loosely bound water as well as from the collagen itself—higher proton mobility within the demineralized dentine was detected when compared with innate dentine. In the demineralized dentine, this proton mobility amounts to 80%, while the remaining hydrogen accounts for a combination of 1) structural hydroxyls, as a result of the incomplete dissolution of the mineral phase by acid etching, and 2) hydrogen tightly bound in the collagen structure. By combining neutron spectroscopy with the calorimetry data, our findings support the idea that hydroxyapatite protects the collagen in innate dentine. Demineralized dentine, however, acts as a sponge where free bulk-like water is trapped.
Collapse
Affiliation(s)
- A.K. Lauritsen
- Niels Bohr Institute, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - J.E.M. Pereira
- Niels Bohr Institute, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - F. Juranyi
- Paul Scherrer Institute, Villigen, Switzerland
| | - H.N. Bordallo
- Niels Bohr Institute, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
- European Spallation Source, Lund, Sweden
| | - L. Larsen
- Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - A.R. Benetti
- Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
8
|
Michou S, Larsen L, Benetti A, Peutzfeldt A. Adhesion and marginal integrity of bioactive restorative materials. Dent Mater 2018. [DOI: 10.1016/j.dental.2018.08.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
9
|
Feldstein SI, Patel F, Larsen L, Kim E, Hwang S, Fung MA. Eruptive keratoacanthomas arising in the setting of lichenoid toxicity after programmed cell death 1 inhibition with nivolumab. J Eur Acad Dermatol Venereol 2017; 32:e58-e59. [PMID: 28776778 DOI: 10.1111/jdv.14503] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- S I Feldstein
- Department of Dermatology, University of California-Davis, Sacramento, CA, USA
| | - F Patel
- Department of Dermatology, University of California-Davis, Sacramento, CA, USA
| | - L Larsen
- Department of Dermatology, University of California-Davis, Sacramento, CA, USA
| | - E Kim
- Department of Medicine, University of California-Davis, Sacramento, CA, USA
| | - S Hwang
- Department of Dermatology, University of California-Davis, Sacramento, CA, USA
| | - M A Fung
- Department of Dermatology, University of California-Davis, Sacramento, CA, USA.,Department of Pathology, University of California-Davis, Sacramento, CA, USA
| |
Collapse
|
10
|
Larsen L, Marker CR, Kjeldsen AD, Poulsen FR. Prevalence of hereditary hemorrhagic telangiectasia in patients operated for cerebral abscess: a retrospective cohort analysis. Eur J Clin Microbiol Infect Dis 2017; 36:1975-1980. [PMID: 28578477 DOI: 10.1007/s10096-017-3023-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 05/22/2017] [Indexed: 11/25/2022]
Abstract
It is well described that patients with pulmonary arteriovenous malformations (PAVMs) and Hereditary Hemorrhagic Telangiectasia (HHT) have an increased risk of cerebral abscess (CA). However, as both CA and HHT are rare, the proportion of patients with CA who are diagnosed with HHT has not been previously described. A retrospective study was carried out of all patients treated surgically for CA between January 1995 and September 2014 at the Department of Neurosurgery, Odense University Hospital. The cases were then cross-referenced with the Danish HHT database. Eighty patients aged 5-79 years were included. The incidence of CA was 0.33/100,000/year. Two patients (2.5%) were registered as having HHT. Bacterial pathogens were identified in 70% of all cases, most frequently streptococci species (46.3%). The most common predisposing condition was odontogenic infection (20%), followed by post-operative infection (13.8%) and post-trauma (6.3%). Patients undergoing a full diagnostic program to determine predisposing conditions causing CA increased over the 20-year period from 11.8% to 65.2%. The 3-month and 1-year mortality rates were 7.5% and 11.25%, respectively. There is an overrepresentation of HHT patients in a cohort of patients with CA, and HHT should be investigated as the cause of the CA if no other apparent cause can be identified.
Collapse
Affiliation(s)
- L Larsen
- Department of Infectious Diseases, Odense University Hospital, J. B. Winsloews Vej 4, Indgang 18, Penthouse 2. sal, 5000, Odense, Denmark.
- Clinical Institute, University of Southern Denmark, 5230, Odense, Denmark.
| | - C R Marker
- Department of Neurosurgery, Odense University Hospital, 5000, Odense, Denmark
- Danish Hereditary Hemorrhagic Telangiectasia Center, Department of Otorhinolaryngology, Odense University Hospital, 5000, Odense, Denmark
| | - A D Kjeldsen
- Danish Hereditary Hemorrhagic Telangiectasia Center, Department of Otorhinolaryngology, Odense University Hospital, 5000, Odense, Denmark
- Clinical Institute, University of Southern Denmark, 5230, Odense, Denmark
| | - F R Poulsen
- Department of Neurosurgery, Odense University Hospital, 5000, Odense, Denmark
- Clinical Institute, University of Southern Denmark, 5230, Odense, Denmark
| |
Collapse
|
11
|
Erdem H, Inan A, Guven E, Hargreaves S, Larsen L, Shehata G, Pernicova E, Khan E, Bastakova L, Namani S, Harxhi A, Roganovic T, Lakatos B, Uysal S, Sipahi OR, Crisan A, Miftode E, Stebel R, Jegorovic B, Fehér Z, Jekkel C, Pandak N, Moravveji A, Yilmaz H, Khalifa A, Musabak U, Yilmaz S, Jouhar A, Oztoprak N, Argemi X, Baldeyrou M, Bellaud G, Moroti RV, Hasbun R, Salazar L, Tekin R, Canestri A, Čalkić L, Praticò L, Yilmaz-Karadag F, Santos L, Pinto A, Kaptan F, Bossi P, Aron J, Duissenova A, Shopayeva G, Utaganov B, Grgic S, Ersoz G, Wu AKL, Lung KC, Bruzsa A, Radic LB, Kahraman H, Momen-Heravi M, Kulzhanova S, Rigo F, Konkayeva M, Smagulova Z, Tang T, Chan P, Ahmetagic S, Porobic-Jahic H, Moradi F, Kaya S, Cag Y, Bohr A, Artuk C, Celik I, Amsilli M, Gul HC, Cascio A, Lanzafame M, Nassar M. The burden and epidemiology of community-acquired central nervous system infections: a multinational study. Eur J Clin Microbiol Infect Dis 2017; 36:1595-1611. [PMID: 28397100 DOI: 10.1007/s10096-017-2973-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 03/22/2017] [Indexed: 12/11/2022]
Abstract
Risk assessment of central nervous system (CNS) infection patients is of key importance in predicting likely pathogens. However, data are lacking on the epidemiology globally. We performed a multicenter study to understand the burden of community-acquired CNS (CA-CNS) infections between 2012 and 2014. A total of 2583 patients with CA-CNS infections were included from 37 referral centers in 20 countries. Of these, 477 (18.5%) patients survived with sequelae and 227 (8.8%) died, and 1879 (72.7%) patients were discharged with complete cure. The most frequent infecting pathogens in this study were Streptococcus pneumoniae (n = 206, 8%) and Mycobacterium tuberculosis (n = 152, 5.9%). Varicella zoster virus and Listeria were other common pathogens in the elderly. Although staphylococci and Listeria resulted in frequent infections in immunocompromised patients, cryptococci were leading pathogens in human immunodeficiency virus (HIV)-positive individuals. Among the patients with any proven etiology, 96 (8.9%) patients presented with clinical features of a chronic CNS disease. Neurosyphilis, neurobrucellosis, neuroborreliosis, and CNS tuberculosis had a predilection to present chronic courses. Listeria monocytogenes, Staphylococcus aureus, M. tuberculosis, and S. pneumoniae were the most fatal forms, while sequelae were significantly higher for herpes simplex virus type 1 (p < 0.05 for all). Tackling the high burden of CNS infections globally can only be achieved with effective pneumococcal immunization and strategies to eliminate tuberculosis, and more must be done to improve diagnostic capacity.
Collapse
Affiliation(s)
- H Erdem
- Principal Coordinator of ID-IRI, Ankara, Turkey.
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Medical Academy, 06010, Etlik, Ankara, Turkey.
| | - A Inan
- Department of Infectious Diseases and Clinical Microbiology, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - E Guven
- Beytepe Murat Erdi Eker State Hospital, Ankara, Turkey
| | - S Hargreaves
- International Health Unit, Section of Infectious Diseases and Immunity, Commonwealth Building, Hammersmith Campus, Imperial College London, London, UK
| | - L Larsen
- Department of Infectious Diseases Q, Odense University Hospital, Odense, Denmark
| | - G Shehata
- Department of Neurology and Psychiatry, Assiut University Hospital, Assiut, Egypt
| | - E Pernicova
- Avenier, Centres for Vaccination and Travel Medicine, Prague, Czech Republic
- Faculty Hospital Brno, Department of Infectious Diseases, Brno, Czech Republic
| | - E Khan
- Shifa International Hospital, Islamabad, Pakistan
| | - L Bastakova
- Faculty Hospital Brno, Department of Infectious Diseases and Masaryk University Faculty of Medicine, Brno, Czech Republic
| | - S Namani
- Infectious Diseases Clinic, University Clinical Center of Kosovo, Prishtina, Kosovo
| | - A Harxhi
- Service of Infectious Disease, University Hospital Center of Tirana, Tirana, Albania
| | - T Roganovic
- Infectious Diseases Clinic, University Hospital Clinical Center Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - B Lakatos
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - S Uysal
- Department of Infectious Diseases and Clinical Microbiology, Seyfi Demirsoy State Hospital, Buca, İzmir, Turkey
| | - O R Sipahi
- Department of Infectious Diseases and Clinical Microbiology, Ege University School of Medicine, Izmir, Turkey
| | - A Crisan
- Department of Infectious Diseases, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - E Miftode
- Hospital of Infectious Diseases, Gr. T. Popa University of Medicine and Pharmacy, Iasi, Romania
| | - R Stebel
- Faculty Hospital Brno, Department of Infectious Diseases and Masaryk University Faculty of Medicine, Brno, Czech Republic
| | - B Jegorovic
- Clinic for Infectious and Tropical Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Z Fehér
- Department of Infectious Diseases, Markusovszky University Teaching Hospital, Szombathely, Hungary
| | - C Jekkel
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - N Pandak
- General Hospital Slavonski Brod, Department for Infectious Diseases, School of Medicine, University of Split, Split, Croatia
| | - A Moravveji
- Social Determinants of Health Research Center, Department of Community Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - H Yilmaz
- Department of Infectious Diseases and Clinical Microbiology, Ondokuz Mayis University School of Medicine, Samsun, Turkey
| | - A Khalifa
- Department of Neurology, Damascus Hospital, Damascus, Syria
| | - U Musabak
- Department of Immunology and Allergy, Losante Hospital, Ankara, Turkey
| | - S Yilmaz
- Gulhane Medical Academy, Blood Bank, Clinical Microbiology Division, Ankara, Turkey
| | - A Jouhar
- Department of Neurology, Damascus Hospital, Damascus, Syria
| | - N Oztoprak
- Antalya Education and Research Hospital, Antalya, Turkey
| | - X Argemi
- Infectious Diseases Department, Nouvel Hôpital Civil, Strasbourg, France
| | - M Baldeyrou
- Infectious Diseases Department, Nouvel Hôpital Civil, Strasbourg, France
| | - G Bellaud
- Department of Infectious Diseases, Tenon University Hospital, Paris, France
| | - R V Moroti
- Carol Davila University of Medicine and Pharmacy and Matei Bals National Institute for Infectious Diseases, Bucharest, Romania
| | - R Hasbun
- Medical School, Department of Infectious Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - L Salazar
- Medical School, Department of Infectious Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - R Tekin
- Department of Infectious Diseases and Clinical Microbiology, Dicle University School of Medicine, Diyarbakir, Turkey
| | - A Canestri
- Department of Infectious Diseases, Tenon University Hospital, Paris, France
| | - L Čalkić
- Department of Infectious Diseases, Zenica Cantonal Hospital, Zenica, Bosnia and Herzegovina
| | - L Praticò
- University Division of Infectious and Tropical Diseases, Piazza Spedali Civili, 25123, Brescia, Italy
| | - F Yilmaz-Karadag
- Goztepe Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Medeniyet University, Istanbul, Turkey
| | - L Santos
- Infectious Diseases Service, Centro Hospitalar São João and Faculty of Medicine, University of Porto, Porto, Portugal
| | - A Pinto
- Infectious Diseases Service, Centro Hospitalar São João and Faculty of Medicine, University of Porto, Porto, Portugal
| | - F Kaptan
- Department of Infectious Diseases and Clinical Microbiology, Katip Celebi University School of Medicine, Izmir, Turkey
| | - P Bossi
- Department Maladies Infectieuses, Institut Pasteur de Paris-HPA, Paris, France
| | - J Aron
- Department Maladies Infectieuses, Institut Pasteur de Paris-HPA, Paris, France
| | - A Duissenova
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - G Shopayeva
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - B Utaganov
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - S Grgic
- Clinic for Infectious Diseases, University Hospital of Mostar, Mostar, Bosnia and Herzegovina
| | - G Ersoz
- Department of Infectious Diseases and Clinical Microbiology, Mersin University School of Medicine, Mersin, Turkey
| | - A K L Wu
- Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - K C Lung
- Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - A Bruzsa
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - L B Radic
- Department of Infectious Diseases, General Hospital Dubrovnik, Dubrovnik, Croatia
| | - H Kahraman
- Department of Infectious Diseases and Clinical Microbiology, Ege University School of Medicine, Izmir, Turkey
| | - M Momen-Heravi
- Department of Infectious Diseases, Social Determinants of Health Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - S Kulzhanova
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - F Rigo
- Unit of Infectious Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - M Konkayeva
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - Z Smagulova
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - T Tang
- Infectious Diseases Team, Department of Medicine, Queen Elizabeth Hospital, Hong Kong, China
| | - P Chan
- Neurology Team, Department of Medicine, Queen Elizabeth Hospital, Hong Kong, China
| | - S Ahmetagic
- University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | - H Porobic-Jahic
- University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | - F Moradi
- Infectious and Tropical Diseases Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - S Kaya
- Department of Infectious Diseases and Clinical Microbiology, Karadeniz Technical University School of Medicine, Trabzon, Turkey
| | - Y Cag
- School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Medeniyet University, Istanbul, Turkey
| | - A Bohr
- Institute of Inflammation Research, Department of Infectious Diseases and Rheumatology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - C Artuk
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Training and Research Hospital, Ankara, Turkey
| | - I Celik
- Department of Infectious Diseases and Clinical Microbiology, Kayseri Training and Research Hospital, Kayseri, Turkey
| | - M Amsilli
- Infectious Diseases Unit, CHU Bicètre, Paris, France
| | - H C Gul
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Training and Research Hospital, Ankara, Turkey
| | - A Cascio
- Department of Health Promotion Sciences and Mother and Child Care "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - M Lanzafame
- Unit of Infectious Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - M Nassar
- Infection Control Department, Saudi German Hospital Group, Jeddah, Saudi Arabia
| |
Collapse
|
12
|
Lev‐Tov H, Larsen L, Zackria R, Chahal H, Eisen D, Sivamani R. Microneedle‐assisted incubation during aminolaevulinic acid photodynamic therapy of actinic keratoses: a randomized controlled evaluator‐blind trial. Br J Dermatol 2016; 176:543-545. [DOI: 10.1111/bjd.15116] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- H. Lev‐Tov
- Department of Dermatology and Cutaneous Surgery Miller School of Medicine University of Miami Miami FL U.S.A
| | - L. Larsen
- Department of Dermatology University of California Davis CA U.S.A
| | - R. Zackria
- Department of Dermatology University of California Davis CA U.S.A
| | - H. Chahal
- Department of Dermatology University of California Davis CA U.S.A
| | - D.B. Eisen
- Department of Dermatology University of California Davis CA U.S.A
| | - R.K. Sivamani
- Department of Dermatology University of California Davis CA U.S.A
| |
Collapse
|
13
|
Palle S, Tang L, Taheri-Kadkhoda Z, Johansen S, Larsen L, Hansen J, Jensen N, Elingaard A, Møller A, Larsen K, Andersen J. MON-P164: Multi-Frequency Bioelectrical Impedance Analysis (BIA) Compared to Magnetic Resonance Imaging (MRI) for Estimation of Fat-Free Mass in Colorectal Cancer Patients Treated with Chemotherapy. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30798-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Cag Y, Erdem H, Leib S, Defres S, Kaya S, Larsen L, Poljak M, Ozturk-Engin D, Barsic B, Argemi X, Sørensen SM, Bohr AL, Tattevin P, Gunst JD, Baštáková L, Jereb M, Johansen IS, Karabay O, Pekok AU, Sipahi OR, Chehri M, Beraud G, Shehata G, Fontana R, Maresca M, Karsen H, Sengoz G, Sunbul M, Yilmaz G, Yilmaz H, Sharif-Yakan A, Kanj S, Parlak E, Pehlivanoglu F, Korkmaz F, Komur S, Kose S, Ulug M, Bolukcu S, Coskuner SA, Stahl JP, Ince N, Akkoyunlu Y, Halac G, Sahin-Horasan E, Tireli H, Kilicoglu G, Al-Mahdawi A, Nemli SA, Inan A, Senbayrak S, Vahaboglu H, Elaldi N. Managing atypical and typical herpetic central nervous system infections: results of a multinational study. Clin Microbiol Infect 2016; 22:568.e9-568.e17. [PMID: 27085724 DOI: 10.1016/j.cmi.2016.03.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 09/30/2015] [Revised: 03/20/2016] [Accepted: 03/26/2016] [Indexed: 11/19/2022]
Abstract
There have been many studies pertaining to the management of herpetic meningoencephalitis (HME), but the majority of them have focussed on virologically unconfirmed cases or included only small sample sizes. We have conducted a multicentre study aimed at providing management strategies for HME. Overall, 501 adult patients with PCR-proven HME were included retrospectively from 35 referral centres in 10 countries; 496 patients were found to be eligible for the analysis. Cerebrospinal fluid (CSF) analysis using a PCR assay yielded herpes simplex virus (HSV)-1 DNA in 351 patients (70.8%), HSV-2 DNA in 83 patients (16.7%) and undefined HSV DNA type in 62 patients (12.5%). A total of 379 patients (76.4%) had at least one of the specified characteristics of encephalitis, and we placed these patients into the encephalitis presentation group. The remaining 117 patients (23.6%) had none of these findings, and these patients were placed in the nonencephalitis presentation group. Abnormalities suggestive of encephalitis were detected in magnetic resonance imaging (MRI) in 83.9% of the patients and in electroencephalography (EEG) in 91.0% of patients in the encephalitis presentation group. In the nonencephalitis presentation group, MRI and EEG data were suggestive of encephalitis in 33.3 and 61.9% of patients, respectively. However, the concomitant use of MRI and EEG indicated encephalitis in 96.3 and 87.5% of the cases with and without encephalitic clinical presentation, respectively. Considering the subtle nature of HME, CSF HSV PCR, EEG and MRI data should be collected for all patients with a central nervous system infection.
Collapse
Affiliation(s)
- Y Cag
- Dr Lütfi Kirdar Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - H Erdem
- Gulhane Medical Academy, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey.
| | - S Leib
- Institute for Infectious Diseases, University of Bern, Switzerland
| | - S Defres
- Institute of Infection and Global Health, University of Liverpool, United Kingdom; Tropical Infections Diseases Unit In Royal Liverpool and Broadgreen University Hospitals NHS Trust, United Kingdom
| | - S Kaya
- Karadeniz Technical University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Trabzon, Turkey
| | - L Larsen
- Odense University Hospital, Department of Infectious Diseases Q, Odense, Denmark
| | - M Poljak
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - D Ozturk-Engin
- Haydarpasa Numune Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - B Barsic
- Dr. Fran Mihaljevic University Hospital for Infectious Diseases, Department of Infectious Diseases, University of Zagreb School of Medicine, Zagreb, Croatia
| | - X Argemi
- Nouvel Hôpital Civil, Department of Infectious Diseases, Strasbourg, France
| | - S M Sørensen
- Aalborg University Hospital, Department of Infectious Diseases, Denmark
| | - A L Bohr
- Copenhagen University Hospital, Institute of Inflammation Research, Department of Infectious Diseases and Rheumatology, Rigshospitalet, Denmark
| | - P Tattevin
- University Hospital of Pontchaillou, Department of Infectious and Tropical Diseases, Rennes, France
| | - J D Gunst
- Aarhus University Hospital, Department of Infectious Diseases, Aarhus, Denmark
| | - L Baštáková
- Faculty Hospital Brno, Department of Infectious Diseases, Masaryk University, Faculty of Medicine, Brno, Czech Republic
| | - M Jereb
- University Medical Centre, Department of Infectious Diseases, Ljubljana, Slovenia
| | - I S Johansen
- Odense University Hospital, Department of Infectious Diseases Q, Odense, Denmark
| | - O Karabay
- Sakarya University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Sakarya, Turkey
| | - A U Pekok
- Private Erzurum Sifa Hospital, Department of Infectious Diseases and Clinical Microbiology, Erzurum, Turkey
| | - O R Sipahi
- Ege University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Izmir, Turkey
| | - M Chehri
- Hvidovre Hospital, Department of Infectious Diseases, Copenhagen, Denmark
| | - G Beraud
- Poitiers University Hospital, Department of Infectious Diseases, France
| | - G Shehata
- Assiut University Hospital, Department of Neurology and Psychiatry, Assiut, Egypt
| | - R Fontana
- University of Catania, Section of Infectious Diseases, Department of Clinical and Molecular Biomedicine, Catania, Italy
| | - M Maresca
- University of Catania, Section of Infectious Diseases, Department of Clinical and Molecular Biomedicine, Catania, Italy
| | - H Karsen
- Harran University, School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Sanliurfa, Turkey
| | - G Sengoz
- Haseki Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - M Sunbul
- Ondokuz Mayis University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Samsun, Turkey
| | - G Yilmaz
- Ankara University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - H Yilmaz
- Ondokuz Mayis University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Samsun, Turkey
| | - A Sharif-Yakan
- American University of Beirut Medical Center, Beirut, Lebanon
| | - S Kanj
- American University of Beirut Medical Center, Beirut, Lebanon
| | - E Parlak
- Ataturk University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Erzurum, Turkey
| | - F Pehlivanoglu
- Haseki Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - F Korkmaz
- Konya Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Konya, Turkey
| | - S Komur
- Cukurova University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Adana, Turkey
| | - S Kose
- Tepecik Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Izmir, Turkey
| | - M Ulug
- Private Umit Hospital, Department of Infectious Diseases and Clinical Microbiology, Eskisehir, Turkey
| | - S Bolukcu
- Haydarpasa Numune Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - S A Coskuner
- Izmir Bozyaka Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Izmir, Turkey
| | - J P Stahl
- Joseph Fourier University and University Hospital of Grenoble, Department of Infectious Diseases, Grenoble, France
| | - N Ince
- Duzce University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Konuralp, Duzce, Turkey
| | - Y Akkoyunlu
- Bezmi Alem Vakif University, School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - G Halac
- Bezmi Alem Vakif University, School of Medicine, Department of Neurology, Istanbul, Turkey
| | - E Sahin-Horasan
- Mersin University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Mersin, Turkey
| | - H Tireli
- Haydarpasa Numune Training and Research Hospital, Department of Neurology, Turkey
| | - G Kilicoglu
- Haydarpasa Numune Training and Research Hospital, Department of Radiology, Turkey
| | - A Al-Mahdawi
- Department of Neurology, Baghdad Teaching Hospital, Iraq
| | - S A Nemli
- Katip Celebi University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Izmir, Turkey
| | - A Inan
- Haydarpasa Numune Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - S Senbayrak
- Haydarpasa Numune Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - H Vahaboglu
- Medeniyet University, Goztepe Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - N Elaldi
- Cumhuriyet University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Sivas, Turkey
| |
Collapse
|
15
|
Poulsen P, Worm E, Hansen R, Larsen L, Grau C, Høyer M. PV-0326: Respiratory gating guided by internal electromagnetic motion monitoring during liver SBRT. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)31575-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
16
|
Tang L, Palle S, Taheri-Kadkhoda Z, Johansen S, Larsen L, Hansen J, Andersen J. SUN-PP132: Body Composition and Dose-Limiting Toxicities in Chemotherapy. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30283-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
17
|
Kristensen JH, Larsen L, Dasgupta B, Brodmerkel C, Curran M, Karsdal MA, Sand JMB, Willumsen N, Knox AJ, Bolton CE, Johnson SR, Hägglund P, Svensson B, Leeming DJ. Levels of circulating MMP-7 degraded elastin are elevated in pulmonary disorders. Clin Biochem 2015; 48:1083-8. [PMID: 26164539 DOI: 10.1016/j.clinbiochem.2015.07.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 07/03/2015] [Accepted: 07/04/2015] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Elastin is a signature protein of the lungs. Matrix metalloproteinase-7 (MMP-7) is important in lung defence mechanisms and degrades elastin. However, MMP-7 activity in regard to elastin degradation has never been quantified serologically in patients with lung diseases. An assay for the quantification of MMP-7 generated elastin fragments (ELM7) was therefore developed to investigate MMP-7 derived elastin degradation in pulmonary disorders such as idiopathic pulmonary fibrosis (IPF) and lung cancer. DESIGN AND METHODS Monoclonal antibodies (mABs) were raised against eight carefully selected MMP-7 cleavage sites on elastin. After characterisation and validation of the mABs, one mAB targeting the ELM7 fragment was chosen. ELM7 fragment levels were assessed in serum samples from patients diagnosed with IPF (n=123, baseline samples, CTgov reg. NCT00786201), and lung cancer (n=40) and compared with age- and sex-matched controls. RESULTS The ELM7 assay was specific towards in vitro MMP-7 degraded elastin and the ELM7 neoepitope but not towards other MMP-7 derived elastin fragments. Serum ELM7 levels were significantly increased in IPF (113%, p<0.0001) and lung cancer (96%, p<0.0001) compared to matched controls. CONCLUSIONS MMP-7-generated elastin fragments can be quantified in serum and may reflect pathological lung tissue turnover in several important lung diseases.
Collapse
Affiliation(s)
- J H Kristensen
- Nordic Bioscience A/S, Herlev, Denmark; The Technical University of Denmark, Department of Systems Biology, Kgs. Lyngby, Denmark.
| | - L Larsen
- Nordic Bioscience A/S, Herlev, Denmark
| | - B Dasgupta
- Janssen Research and Development, LLC, Spring House, PA, USA
| | - C Brodmerkel
- Janssen Research and Development, LLC, Spring House, PA, USA
| | - M Curran
- Janssen Research and Development, LLC, Spring House, PA, USA
| | | | | | | | - A J Knox
- Division of Respiratory Medicine and Respiratory Research Unit, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - C E Bolton
- Division of Respiratory Medicine and Respiratory Research Unit, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - S R Johnson
- Division of Respiratory Medicine and Respiratory Research Unit, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - P Hägglund
- The Technical University of Denmark, Department of Systems Biology, Kgs. Lyngby, Denmark
| | - B Svensson
- The Technical University of Denmark, Department of Systems Biology, Kgs. Lyngby, Denmark
| | | |
Collapse
|
18
|
Larsen JR, Larsen L, Holst JJ. Correction. Does a GLP-1 receptor agonist change glucose tolerance in patients treated with antipsychotic medications? Design of a randomised, double-blinded, placebo-controlled clinical trial. BMJ Open 2015; 5:e004227corr1. [PMID: 25948402 PMCID: PMC4431127 DOI: 10.1136/bmjopen-2013-004227corr1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
|
19
|
McArthur G, Kohnen S, Jones K, Eve P, Banales E, Larsen L, Castles A. Replicability of sight word training and phonics training in poor readers: a randomised controlled trial. PeerJ 2015; 3:e922. [PMID: 26019992 PMCID: PMC4435451 DOI: 10.7717/peerj.922] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 10/22/2014] [Accepted: 04/09/2015] [Indexed: 12/02/2022] Open
Abstract
Given the importance of effective treatments for children with reading impairment, paired with growing concern about the lack of scientific replication in psychological science, the aim of this study was to replicate a quasi-randomised trial of sight word and phonics training using a randomised controlled trial (RCT) design. One group of poor readers (N = 41) did 8 weeks of phonics training (i.e., phonological decoding) and then 8 weeks of sight word training (i.e., whole-word recognition). A second group did the reverse order of training. Sight word and phonics training each had a large and significant valid treatment effect on trained irregular words and word reading fluency. In addition, combined sight word and phonics training had a moderate and significant valid treatment effect on nonword reading accuracy and fluency. These findings demonstrate the reliability of both phonics and sight word training in treating poor readers in an era where the importance of scientific reliability is under close scrutiny.
Collapse
Affiliation(s)
- G McArthur
- Department of Cognitive Science, ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, NSW, Australia
| | - S Kohnen
- Department of Cognitive Science, ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, NSW, Australia
| | - K Jones
- Department of Cognitive Science, ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, NSW, Australia
| | - P Eve
- Department of Cognitive Science, ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, NSW, Australia
| | - E Banales
- Department of Cognitive Science, ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, NSW, Australia
| | - L Larsen
- Department of Cognitive Science, ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, NSW, Australia
| | - A Castles
- Department of Cognitive Science, ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, NSW, Australia
| |
Collapse
|
20
|
Hansen T, Larsen L. 178 A retrospective assessment of patients with nausea or vomiting when treated with cisplatin and vinorelbine. Eur J Oncol Nurs 2014. [DOI: 10.1016/s1462-3889(14)70195-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
21
|
Jørgensen T, Kristensen L, Christensen R, Bliddal H, Lorenzen T, Hansen M, Østergaard M, Jensen J, Zanjani L, Laursen T, Butt S, Dam M, Lindegaard H, Espesen J, Hendricks O, Kumar P, Kincses A, Larsen L, Andersen M, Næser E, Jensen D, Grydehøj J, Unger B, Dufour N, Sørensen V, Vildhøj S, Hansen I, Raun J, Krogh N, Hetland M. SAT0065 Effectiveness and Drug Adherence of Biologic Monotherapy in Danish Rheumatoid Arthritis Patients: A Cohort Study of Clinical Practice in the Danbio Registry. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
22
|
Asif I, Price D, Fisher L, Zakrajsek R, Raabe J, Bejar M, Larsen L, Rao A, Harmon K, Drezner J. SCREENING FOR SUDDEN CARDIAC DEATH IN ATHLETES: THE PSYCHOLOGICAL IMPACT OF BEING DIAGNOSED WITH POTENTIALLY LETHAL DISEASE. Br J Sports Med 2014. [DOI: 10.1136/bjsports-2014-093494.8] [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: 11/03/2022]
|
23
|
Boskov Hansen H, Andreasen M, Nielsen M, Larsen L, Knudsen BK, Meyer A, Christensen L, Hansen Å. Changes in dietary fibre, phenolic acids and activity of endogenous enzymes during rye bread-making. Eur Food Res Technol 2014. [DOI: 10.1007/s00217-001-0417-6] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
24
|
Carstensen H, Larsen L, Hassager C, Kofoed K, Kristensen C, Jensen J, Mogelvang R, Dulgheru R, Magne J, Kou S, Machado C, Henri C, Voilliot D, Laaraibi S, Pierard L, Lancellotti P, Sato K, Seo Y, Ishizu T, Takeuchi M, Izumo M, Suzuki K, Yamashita E, Miyake F, Otsuji Y, Aonuma K, Rao CM, Benedetto F, Luca F, Van Garsse L, Parise O, Benedetto D, Aguglia D, Maessen J, Gensini GF, Gelsomino S, Knebel F, Spethmann S, Baldenhofer G, Sanad W, Stangl V, Laule M, Dreger H, Mueller E, Baumann G, Stangl K. Oral Abstract sessions * 2 D strain in aortic stenosis: clinical impact: 13/12/2013, 14:00-15:30 * Location: Bursa. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
25
|
Li L, Brichard L, Larsen L, Menon DK, Smith RAJ, Murphy MP, Aigbirhio FI. Radiosynthesis of 11-[(18) F]fluoroundecyltriphenylphosphonium (MitoF) as a potential mitochondria-specific positron emission tomography radiotracer. J Labelled Comp Radiopharm 2013; 56:717-21. [PMID: 24339010 DOI: 10.1002/jlcr.3109] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 07/09/2013] [Accepted: 07/09/2013] [Indexed: 02/11/2024]
Abstract
Changes in the magnitude of the mitochondrial membrane potential occur in a range of important pathologies. To assess changes in membrane potential in patients, we set out to develop an improved mitochondria-targeted positron emission tomography probe comprising a lipophilic triphenylphosphonium cation attached to a fluorine-18 radionuclide via an 11-carbon alkyl chain, which is well-established to effectively transport to and localise within mitochondria. Here, we describe the radiosynthesis of this probe, 11-[(18) F]fluoroundecyl-triphenylphosphonium (MitoF), from no-carrier-added [(18) F]fluoride and a fully automated synthetic protocol to prepare it in good radiochemical yields (2-3 GBq at end-of-synthesis) and radiochemical purity (97-99%).
Collapse
Affiliation(s)
- L Li
- Molecular Imaging Chemistry Laboratory, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, UK
| | | | | | | | | | | | | |
Collapse
|
26
|
Ebron S, Larsen L. Development and Evaluation of Carbohydrate Counting Tool for Traditional Bhutanese-Nepali Foods. J Acad Nutr Diet 2013. [DOI: 10.1016/j.jand.2013.06.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
27
|
Raghavendra A, Ji L, Ricker C, Tang S, Church TD, Larsen L, Sheth P, Sposto R, Sener S, Tripathy D. Abstract P4-01-11: Clinical Findings and Outcomes from MRI Staging of Breast Cancer in a Diverse Population. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p4-01-11] [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: 11/16/2022]
Abstract
Abstract
Background: Staging breast MRI can detect occult breast cancers in 1–10% of newly diagnosed patients. The performance of MRI, impact of patient factors, and resulting surgical management in underserved and diverse populations has not been well studied.
Methods We performed a retrospective analysis of consecutive patients with newly diagnosed in situ or invasive breast cancer (2006–2011) who had a preoperative staging MRI seen at our Centers that cares for an underserved and minority population. IRB approval was obtained to extract demographic and clinicopathological data, imaging studies and surgical treatment. Non-index lesions (NIL) were defined as those in breast or axillary nodes not known to be malignant or presenting with clinical, mammographic or ultrasound findings, in a different quadrant and given an MRI BIRADS score of 4 or 5. Occult cancers (OC) were those lesions found by biopsy or surgery to be invasive or in situ cancer. Logistic regression was used to examine the association between the probability of a NIL or OC and patients characteristics. Statistical computation was performed using STATA.
Results: Among 678 patients, 144 (21%) had a total of 171 NIL identified by MRI; 67 (9.8%) were ipsilateral, 44 (6.5%) contralateral and 24(3.5%)axillary nodes. 57 patients (8.4%) had a total of 62 OCs detected −34 (5%) ipsilateral, 8(1.2%) contralateral, and 9(1.3%) axillary nodes of which 49 (7.2%) were invasive and 8 (1.2%) in situ. 40% of patients with NILs were confirmed as OCs.
Analyses showed that age was marginally significantly associated with the probability of having OC(OR = 1.5 for each 10 years increase, p = 0.080). Patients with no BRCA mutation had significantly higher chance of having NILs tested with MRI (p = 0.003), but the probability of having OC did not significantly differ between those tested. Ipsilateral compared to contralateral NILs had a 4-fold higher chance of being OCs(p < 0.001). For NILs (n = 157), 59 (37.6%) underwent biopsy, 11 (7%) biopsy followed by lumpectomy, 10(6.4%) had lumpectomy, 24 (15.3%) mastectomy, 15 (9.6%) biopsy followed by mastectomy and (15)9.6% node dissection. Amongst OCs (n = 62) 6 (3.8%) underwent biopsy, 6 (3.8%) biopsy followed by lumpectomy, 6 (3.8%) lumpectomy, 20(12.7%) mastectomy, 12 (7.6%) had biopsy followed by mastectomy and 10 (6.4 %) node dissection.
Conclusions: In this diverse population, staging MRI detected NILs and OC in 21% and 8.4% of patients, respectively. Laterality and age seemed to be associated with chance of having OC. Interestingly, none of the OCs detected were among the known 32 mutation carriers. MRI staging appears to identify OC to an equal extent in a largely Hispanic and younger underserved population as reported in the literature for populations of mostly insured patients.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P4-01-11.
Collapse
Affiliation(s)
- A Raghavendra
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| | - L Ji
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| | - C Ricker
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| | - S Tang
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| | - TD Church
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| | - L Larsen
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| | - P Sheth
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| | - R Sposto
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| | - S Sener
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| | - D Tripathy
- University of Southern California Keck School of Medicine, Los Angeles, CA; Los Angeles County and University of Southern California (LAC+USC) Healthcare Network, Los Angeles, CA; USC Norris Comprehensive Cancer Center, Los Angeles, CA
| |
Collapse
|
28
|
Flensborg Damholdt M, Shevlin M, Borghammer P, Larsen L, Ostergaard K. Clinical heterogeneity in Parkinson's disease revisited: a latent profile analysis. Acta Neurol Scand 2012; 125:311-8. [PMID: 21707551 DOI: 10.1111/j.1600-0404.2011.01561.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The heterogeneity of Parkinson's disease (PD) is increasingly recognized, and several attempts have been made to subclassify subjects on clinical or cognitive features. We explored the utility of latent profile analysis (LPA) as a means of classifying patients with PD on clinical features and test validity of these subclasses against neuropsychological data. METHODS LPA utilizing clinical variables while controlling for age was applied to a cohort of 71 outpatients with PD. The resultant subgroups were validated via comparison to 30 control subjects on neuropsychological tests of executive, memory, and visuospatial functions. RESULTS The LPA resulted in a three-class solution identifying a 'younger onset, mild motor impairment group', a 'moderate motor impairment group', and an 'old onset, fast progression group'. The groups were distinguishable on cognitive variables with the 'younger onset mild motor impairment subgroup' displaying deficits pertaining verbal acquisition, visuospatial construction, and set maintenance. The 'moderate motor impairment group' exhibited widespread cognitive impairment, and the 'old onset, fast disease progression group' had extensive cognitive impairment but outperformed the former group on verbal acquisition and visuospatial function. CONCLUSION LPA holds promise in PD research as it uncovered three PD subtypes distinguished by motor symptoms and disease progression and validated by cognitive variables.
Collapse
|
29
|
Spitz A, Young JM, Larsen L, Mattia-Goldberg C, Donnelly J, Chwalisz K. Efficacy and safety of leuprolide acetate 6-month depot for suppression of testosterone in patients with prostate cancer. Prostate Cancer Prostatic Dis 2011; 15:93-9. [PMID: 22025196 PMCID: PMC3278745 DOI: 10.1038/pcan.2011.50] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [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] [Indexed: 12/13/2022]
Abstract
Background: This open-label study evaluated the efficacy and safety of a new leuprolide acetate 45 mg 6-month depot formulation in 151 men with prostate cancer who received 2 intramuscular injections administered 24 weeks apart. Methods: The primary efficacy measurement was the proportion of patients achieving suppression of serum testosterone to ⩽50 ng dl−1 from week 4 through week 48. Adverse events (AEs) and hormonal and safety laboratory values were monitored. Results: The primary efficacy end point was achieved in 93.4% of subjects (95% confidence interval (89.2%, 97.6%)). There were nine escapes from testosterone suppression during the study, none of which were accompanied by a rise in PSA. By week 4, mean testosterone concentration was suppressed below castrate levels to 15.9 ng dl−1; suppression was maintained for the entire 24-week duration of each depot injection. No mean increase in testosterone was observed after the second injection. Mean PSA levels were maintained below 3 ng ml−1 from week 14 through the 48-week treatment period. The most frequent AE was flushing (58.3%). Injection site reactions were reported in 24.5% of patients. Conclusions: Leuprolide acetate 45 mg 6-month depot demonstrated rapid and sustained testosterone suppression through 12 months and was well tolerated. This 6-month leuprolide acetate depot will decrease the number of annual injections in the treatment of prostate cancer.
Collapse
Affiliation(s)
- A Spitz
- South Orange County Medical Research Center, Laguna Hills, CA, USA
| | | | | | | | | | | |
Collapse
|
30
|
Barascuk N, Vassiliadis E, Zheng Q, Wang Y, Wang W, Larsen L, Rasmussen LM, Karsdal MA. Levels of Circulating MMCN-151, a Degradation Product of Mimecan, Reflect Pathological Extracellular Matrix Remodeling in Apolipoprotein E Knockout Mice. Biomark Insights 2011; 6:97-106. [PMID: 22084568 PMCID: PMC3201086 DOI: 10.4137/bmi.s7777] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
AIM Arterial extracellular matrix (ECM) remodeling by matrix metalloproteinases (MMPs) is one of the major hallmarks of atherosclerosis. Mimecan, also known as osteoglycin has been implicated in the integrity of the ECM. This study assessed the validity of an enzyme-linked immunosorbent assay (ELISA) developed to measure a specific MMP12-derived fragment of mimecan, MMCN-151, in apolipoprotein-E knockout (ApoE-KO) mice. METHODS AND RESULTS A mouse monoclonal antibody raised against MMCN-151 was used to develop a competitive ELISA. The assay was validated using samples from 20 ApoE-KO and 20 wild type [C57 BL/6] male mice fed a normal or high-fat diet (HFD) for up to 20 weeks. The technical reliability of the assay was established with intra-assay variability <2% and inter-assay variability <10%. The lowest limit of quantification of MMCN-151 was 0.5 ng/ml. ApoE-KO mice fed a HFD for 20 weeks had four-fold increased circulating levels of MMCN-151 compared to baseline, whereas MMCN-151 levels in control mice on HFD increased two-fold compared with baseline. After 10 weeks of a HFD, a significant difference in MMCN-151 levels was observed between ApoE-KO and control mice (P = 0.005) and became more significant at 20 weeks (P = 0.002). CONCLUSIONS The newly developed assay is a reliable detector of MMCN-151 levels which ultimately may be useful indicators of arterial remodeling in patients affected by atherosclerotic disease.
Collapse
|
31
|
Tang S, Fahed E, Azadi A, Ricker C, Larsen L, Lee S, Jain P, Spicer D, Tripathy D. Abstract P2-02-04: MRI Findings and Outcomes in an Underserved Breast Cancer Population Screened with BRCA Testing. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p2-02-04] [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: 11/16/2022]
Abstract
Abstract
Background: Patients with breast cancer and a familial risk and/or BRCA 1 or 2 mutations are at high risk of contralateral breast cancer and ipsilateral recurrence. While MRI screening is recommended for patients with BRCA mutations, and MRI staging for breast cancer is being increasingly used, the outcomes of such testing are not well described, especially in underserved populations. At Los Angeles County Hospital (LAC) for the last 3 years, we have enacted a program of genetic counseling and testing based standard guidelines as well as MRI evaluation of all patients newly diagnosed with breast cancer. LAC serves a population that includes a high number of indigent patients, primarily Hispanic (60%) and Asian (15%). Methods: We undertook a retrospective evaluation of all patients seen at LAC from March 2008 to March 2010 who underwent genetic counseling/testing and MRI as preoperative assessment for histologically documented breast cancer or followup after cancer treatment. IRB approval was obtained to extract data for this analysis. Demographic information along with clinical presentation, MRI and mammography results, additional imaging results, biopsy and surgical procedure and corresponding pathology data were obtained through the review of electronic medical records and clinic charts.
Results: A total of 90 patients had both genetic testing and MRI reports available. The median age of all tested patients was 41 years. Ethnicity was 78% Hispanic, 9% Asian, 7% African American, 2% Caucasian and 4% other. BRCA mutation was seen in 20 cases (22%), 12 BRCA-1, 8 BRCA-2, 4 variants of unknown significance, and 66 had no mutation. Breast mass or other symptoms were the mode of detection in 89% of the overall cohort, and 81% in mutation carriers. The index lesion was visible on MRI in 78% and by mammogram in 82% of all patients. Ipsilateral MRI showed 7 abnormal non-index findings in 6 patients (7%); 6 of 7 lesions biopsied showed cancer. In the contralateral breast, 7 abnormalities were noted on MRI, but only 5 were amenable to biopsy as 2 could not be visualized by any means on follow up, and 1 showed cancer. Interestingly, only one of the 13 patients with abnormal findings carried a mutation (BRCA-1) and this patient did not have cancer on contralateral lesion biopsy. Mastectomy was performed in 91% and 78% of patients with and without mutation. Conclusions: Screening, counseling and testing for BRCA mutations is feasible in an underserved population, with a 22% mutation identification rate. MRI detected 5 non-index ipsilateral cancers and one contralateral cancer among 90 patients, with none of the detected cancers among the 20 mutation carriers. While MRI staging may be effective at detecting additional cancers in this underserved and high familial risk population, this appears to be independent of BRCA status.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P2-02-04.
Collapse
Affiliation(s)
- S Tang
- University of Southern California, Los Angeles
| | - E Fahed
- University of Southern California, Los Angeles
| | - A Azadi
- University of Southern California, Los Angeles
| | - C Ricker
- University of Southern California, Los Angeles
| | - L Larsen
- University of Southern California, Los Angeles
| | - S Lee
- University of Southern California, Los Angeles
| | - P Jain
- University of Southern California, Los Angeles
| | - D Spicer
- University of Southern California, Los Angeles
| | - D. Tripathy
- University of Southern California, Los Angeles
| |
Collapse
|
32
|
Cosgrove DO, Doré C, Tourasse C, Ohlinger R, Madjar H, Hooley R, Balu-Maestro C, Mendelson E, Svensson W, Tardivon A, Cossi A, Barke L, Larsen L. Preliminary assessment of ShearWave™ elastography features in predicting breast lesion malignancy. Breast Cancer Res 2010. [PMCID: PMC2978827 DOI: 10.1186/bcr2663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
33
|
Geor RJ, Larsen L, Waterfall HL, Stewart-Hunt L, McCutcheon LJ. Route of carbohydrate administration affects early post exercise muscle glycogen storage in horses. Equine Vet J 2010:590-5. [PMID: 17402489 DOI: 10.1111/j.2042-3306.2006.tb05610.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
REASONS FOR PERFORMING STUDY No studies in horses have examined the effect of route of carbohydrate (glucose) administration on the rate of muscle glycogen storage following glycogen-depleting exercise. HYPOTHESIS Glucose delivery from the gastrointestinal tract limits the rate of muscle glycogen storage following glycogen-depleting exercise. METHODS In a crossover design, 7 fit horses completed treadmill exercise (EX) on 3 occasions to deplete muscle glycogen by approximately 50%. After EX horses received: 1) i.v. glucose infusion (IV; 0.5 g/kg bwt/h for 6 h), 2) oral glucose boluses (OR; 1 g/kg bwt at 0, 2 and 4 h post EX) or 3) no glucose supplementation (CON). Blood samples for measurement of glucose and insulin concentrations were collected before EX and during the 6 h treatment period. Muscle biopsies for measurement of muscle glycogen content (GLY) and glycogen synthase (GS) activity were taken before and after exercise and at 3 and 6 h. RESULTS Mean plasma glucose concentrations were significantly higher in IV and OR than in CON throughout treatment. The average serum insulin responses in IV and OR treatments were also significantly greater than in CON. After EX, GLY was not different among the 3 treatments. However, glycogen storage rates were significantly higher in IV than in CON and OR during the first 3 h and second 3 h of recovery, and GLY was significantly higher in IV than in OR and CON at 6 h of recovery. GS activity was significantly higher in IV than in OR and CON at 3 h of recovery. CONCLUSIONS Muscle glycogen storage in horses during a 6 h period after exercise was enhanced by i.v. glucose administration (3 g/kg) but not by an equivalent glucose dose administered per os. While oral administration of glucose achieved a level of hyperglycaemia and hyperinsulinaemia that markedly accelerates glycogen storage in other species, the rate of glycogen storage following oral supplementation was not different to control conditions. POTENTIAL RELEVANCE Glucose supplementation via the i.v. route should be considered when rapid replenishment of muscle glycogen stores is desired.
Collapse
Affiliation(s)
- R J Geor
- Department of Biomedical Science, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | | | | | | | | |
Collapse
|
34
|
Young J, Spitz A, Larsen L, Mattia-Goldberg C, Donnelly J, Chwalisz K. Efficacy and safety of 6-month depot leuprolide acetate for the treatment of prostate cancer: Results of a 48-week study. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e15042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
35
|
Barascuk N, Veidal SS, Larsen L, Larsen DV, Larsen MR, Wang J, Zheng Q, Xing R, Cao Y, Rasmussen LM, Karsdal MA. A novel assay for extracellular matrix remodeling associated with liver fibrosis: An enzyme-linked immunosorbent assay (ELISA) for a MMP-9 proteolytically revealed neo-epitope of type III collagen. Clin Biochem 2010; 43:899-904. [PMID: 20380828 DOI: 10.1016/j.clinbiochem.2010.03.012] [Citation(s) in RCA: 171] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2010] [Revised: 02/18/2010] [Accepted: 03/21/2010] [Indexed: 01/12/2023]
Abstract
OBJECTIVES Accumulation of extracellular matrix (ECM) components and increased matrix-metalloprotease (MMPs) activity are hallmarks of fibrosis. We developed an ELISA for quantification of MMP-9 derived collagen type III (CO3) degradation. DESIGN AND METHODS A monoclonal antibody targeting a specific MMP-9 cleaved fragment of CO3 was used for development of a competitive ELISA. The assay was investigated in serum and tissues from bile duct ligated rats (BDL). RESULTS The ELISA showed no cross-reaction with either intact CO3, or other collagens. The intra- and inter-assay CV were below 10%. Liver fibrosis was demonstrated in BDL animals by semi quantitative scoring (P<0.0001). Serum levels of CO3-610 increased 2.5 fold in BDL animals (P<0.001). The CO3-610 levels were 5 fold higher in ex vivo cultures of fibrotic livers compared to controls (P<0.001). CONCLUSION We have developed a novel ELISA for measuring a specific fragment CO3 generated by MMP-9 important in pathogenesis of liver fibrosis.
Collapse
|
36
|
Abstract
Gastrointestinal iron absorption has been measured by means of whole body counting in 13 patients after renal allotransplantation. Whole body retention 14 days after oral administration of 10 muCi 59Fe together with a carrier dose of 9.9 mg Fe2+ was used as an expression of absorption. The percentage incorporation in the total erythrocyte mass of administered 59Fe (erythrocyte incorporation) and absorbed 59Fe (red cell utilization) was estimated as well. Geometric mean iron absorption was 12.4 +/- 2.5 (S.D.)% and geometric mean erythrocyte incorporation 11.1 +/- 3.0 (S.D.)% while arithmetic mean red cell utilization was 95.6 +/- 8.6 (S.E.M.)%. None of these parameters differed significantly from those obtained in normal subjects (p greater than 0.2, p greater than 0.1, pgreater than 0.3, respectively). Iron absorption and erythrocyte incorporation in renal transplanted patients did not differ significantly from the values measured in non-dialysed and dialysed patients with chronic renal failure (p greather than 0.1). The correlation between iron absorption and erythrocyte incorporation was highly significant (r = 0.96, p less than 0.001).
Collapse
|
37
|
Abstract
Gastrointestinal iron absorption has been measured by whole body counting in 17 patients with chronic uremia undergoin regular hemodialysis. Absorption was expressed as whole body retention 14 days after oral administration of 10 muCi 59Fe together with a carrier dose of 10 mg Fe2+. The percentage incorporation in the total erythrocyte mass of administered 59Fe (erythrocyte incorporation) and absorbed 59Fe (red cell utilization) was estimated as well. Geometric mean iron absorption was 14.3 +/- 2.0 (S.D.)% and significantly higher than the value obtained in a normal control group (p less than 0.03). Geometric mean erythrocyte incorporation was 11.6 +/- 2.3 (S.D.)% and arithmetic mean red cell utilization was 84.4 +/- 6.0 (S.E.M.)%. Neither of these parameters differed from corresponding values in the control group (p greater than 0.1 and p greater than 0.2, respectively). The correlation between iron absorption and erythrocyte incorporation was highly significant (r=0.94, p less than 0.001). Patients on regular hemodialysis are subjected to considerable iron loss which should be treated by iron supplementation; oral iron administration is recommended in view of the adequate gastrointestinal absorption.
Collapse
|
38
|
Milman N, Christensen T, Bartels U, Larsen L. Iron absorption and iron status in patients with chronic uremia on regular peritoneal dialysis. Acta Med Scand 2009; 205:629-35. [PMID: 474193 DOI: 10.1111/j.0954-6820.1979.tb06117.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Gastrointestinal iron absorption was measured by whole body counting in 18 patients on regular peritoneal dialysis. Ten patients received regular oral iron treatment prior to the study (iron treated group), 8 patients did not receive iron treatment (non-iron treated group). Whole body retention 14 days after oral administration of 10 microCi 59Fe together with a carrier dose of 10 mg Fe2+ was used as an estimate of absorption. The erythrocyte iron incorporation, i.e. the percentage of administered 59Fe incorporated into the total erythrocyte mass, was measured. Geometric mean iron absorption in the non-iron treated groups was 7.4+/-3.3 (S.D.) % and in the iron treated group 2.8+/-2.5% (p less than 0.01). Absorption in the non-iron treated group did not differ significantly from the value in a normal control group (p greater than 0.3). Absorption in the iron treated group was distinctly lower than in the controls (p less than 0.01), due to the high iron supplementation. Several patients in the non-iron treated group had latent or overt iron deficiency, while patients in the iron treated group had satisfactory iron status. The correlation between iron absorption and erythrocyte iron incorporation was highly significant (r=0.95, p less than 0.001). Peritoneal dialysis patients on the whole have a normally functioning iron absorption. However, due to increased iron losses and insufficient dietary iron intake, the maintenance of a satisfactory iron balance implies an adequate oral iron supplementation.
Collapse
|
39
|
Metz DC, Howden CW, Perez MC, Larsen L, O'Neil J, Atkinson SN. Clinical trial: dexlansoprazole MR, a proton pump inhibitor with dual delayed-release technology, effectively controls symptoms and prevents relapse in patients with healed erosive oesophagitis. Aliment Pharmacol Ther 2009; 29:742-54. [PMID: 19210298 DOI: 10.1111/j.1365-2036.2009.03954.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [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: 12/13/2022]
Abstract
BACKGROUND Dexlansoprazole MR heals all grades of erosive oesophagitis (EO). AIM To assess efficacy and safety of dexlansoprazole MR in maintaining healed EO and heartburn relief. METHODS In this randomized, double-blind trial, 445 patients with healed EO received dexlansoprazole MR 30 mg or 60 mg or placebo once daily for 6 months. This trial assessed maintenance of endoscopic healing (primary endpoint) and continued symptom relief based on daily diaries (secondary endpoints). RESULTS Dexlansoprazole MR 30 mg and 60 mg were superior to placebo for maintaining healed EO (P < 0.0025; Hochberg's). By life-table analysis, maintenance rates were 75%, 83% and 27% for dexlansoprazole MR 30 mg, 60 mg and placebo respectively. Crude maintenance rates were 66% for both dexlansoprazole MR doses and 14% for placebo. Dexlansoprazole MR controlled heartburn (medians of 91-96% for 24-h heartburn-free days, 96-99% for heartburn-free nights). The only more common adverse event occurring at a significantly higher rate in dexlansoprazole MR groups than placebo when analysed per patient-months of exposure was upper respiratory tract infection. CONCLUSIONS Dexlansoprazole MR effectively maintained EO healing and symptom relief; most patients were heartburn-free for >90% of days. Both doses were well tolerated.
Collapse
Affiliation(s)
- D C Metz
- University of Pennsylvania School of Medicine, Division of Gastroenterology, Philadelphia, PA, USA
| | | | | | | | | | | |
Collapse
|
40
|
Segalés J, Olvera A, Grau-Roma L, Charreyre C, Nauwynck H, Larsen L, Dupont K, McCullough K, Ellis J, Krakowka S, Mankertz A, Fredholm M, Fossum C, Timmusk S, Stockhofe-Zurwieden N, Beattie V, Armstrong D, Grassland B, Baekbo P, Allan G. PCV-2 genotype definition and nomenclature. Vet Rec 2008; 162:867-8. [DOI: 10.1136/vr.162.26.867] [Citation(s) in RCA: 208] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- J. Segalés
- Centre de Recerca en Sanitat Animal - Departament de Sanitat i Anatomia Animals; Universitat Autònoma de Barcelona; 08193 Bellaterra Barcelona Spain
| | - A. Olvera
- Centre de Recerca en Sanitat Animal - Departament de Sanitat i Anatomia Animals; Universitat Autònoma de Barcelona; 08193 Bellaterra Barcelona Spain
| | - L. Grau-Roma
- Centre de Recerca en Sanitat Animal - Departament de Sanitat i Anatomia Animals; Universitat Autònoma de Barcelona; 08193 Bellaterra Barcelona Spain
| | | | - H. Nauwynck
- Laboratory of Virology; Faculty of Veterinary Medicine; Ghent University; 9820 Merelbeke Belgium
| | - L. Larsen
- Department of Veterinary Diagnostics and Research; Technical University of Denmark; 1790 Copenhagen Denmark
| | - K. Dupont
- Department of Veterinary Diagnostics and Research; Technical University of Denmark; 1790 Copenhagen Denmark
| | - K. McCullough
- Institute of Virology and Immunoprophylaxis; CH-3147 Mittelhäusern Switzerland
| | - J. Ellis
- Department of Veterinary Microbiology; Western College of Veterinary Medicine; University of Saskatchewan; 52 Campus Drive Saskatoon 57N 5B4 Canada
| | - S. Krakowka
- Department of Veterinary Biosciences; College of Veterinary Medicine; Ohio State University; Columbus 43210 USA
| | - A. Mankertz
- Robert Koch-Institut; Division of Viral Infections (FG12); Nordufer 20 13353 Berlin Germany
| | - M. Fredholm
- Department of Animal and Veterinary Basic Sciences; Division of Genetics and Bioinformatics; Faculty of Life Sciences; University of Copenhagen; Copenhagen Denmark
| | - C. Fossum
- Department of Biomedicine and Veterinary Public Health; Section for Immunology; Biomedical Centre; Swedish University of Agricultural Sciences; PO Box 588 SE 751 23 Uppsala Sweden
| | - S. Timmusk
- Department of Biomedicine and Veterinary Public Health; Section for Immunology; Biomedical Centre; Swedish University of Agricultural Sciences; PO Box 588 SE 751 23 Uppsala Sweden
| | - N. Stockhofe-Zurwieden
- Animal Sciences Group; Wageningen UR Infectious Diseases; Edelhertweg 15, PO Box 65 8200 AB Lelystad The Netherlands
| | - V. Beattie
- Devenish Nutrition; 96 Duncrue Street Belfast BT3 9AR
| | - D. Armstrong
- BPEX; PO Box 44, Winterhill House, Snowdon Drive Milton Keynes MK6 1AX
| | - B. Grassland
- Agence Française de Sécurité Sanitaire des Aliments; BP 53 F-22440 Ploufragan France
| | - P. Baekbo
- Section for Veterinary Research and Development; Danish Pig Production; Vinkelvej 11 DK-8620 Kjellerup Denmark
| | - G. Allan
- Virology Laboratory; Veterinary Sciences Department; Queen's University of Belfast; Belfast BT4 3SD
| |
Collapse
|
41
|
Baron PA, Estill CF, Beard JK, Hein MJ, Larsen L. Bacterial endospore inactivation caused by outgassing of vapourous hydrogen peroxide from polymethyl methacrylate (Plexiglas). Lett Appl Microbiol 2008; 45:485-90. [PMID: 17958554 DOI: 10.1111/j.1472-765x.2007.02209.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIMS To investigate the cause and to eliminate the inactivation of Bacillus anthracis strain Sterne spores settled onto agar and stainless steel surfaces in plastic holders. METHODS AND RESULTS In an experimental chamber in which spores settled onto sampling surfaces, vapourous hydrogen peroxide (VHP) was used for decontamination between experiments. It was demonstrated that hydrogen peroxide (H(2)O(2)) absorbed into plastic (Plexiglas) surfaces and could outgas in the sample holders. Further experiments demonstrated that H(2)O(2) was released from Plexiglas sample holders in sufficient quantity to inactivate spores. High temperature degassing (30-35 degrees C) for several days or aluminum coating of the surfaces were two remedies found to be effective in preventing inadvertent spore inactivation. CONCLUSIONS H(2)O(2) can be absorbed into plastic and released after an extended period of time (weeks), allowing a sufficient concentration to accumulate in small volumes to inactivate spores. Outgassing the plastic or coating the surface with an impermeable layer are potential solutions to reduce spore inactivation. SIGNIFICANCE AND IMPACT OF THE STUDY Many studies with bacilli and other organisms are carried out using small plastic containers that may have been sterilized using H(2)O(2) or other agents. This study presents a cautionary note to ensure elimination of H(2)O(2) or other sterilizing agents to prevent spurious results.
Collapse
Affiliation(s)
- P A Baron
- National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, 4676 Columbia Parkway, Cincinnati, OH 45226, USA.
| | | | | | | | | |
Collapse
|
42
|
Larsen L, Tonnesen M, Ronn SG, Størling J, Jørgensen S, Mascagni P, Dinarello CA, Billestrup N, Mandrup-Poulsen T. Inhibition of histone deacetylases prevents cytokine-induced toxicity in beta cells. Diabetologia 2007; 50:779-89. [PMID: 17265033 DOI: 10.1007/s00125-006-0562-3] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2006] [Accepted: 10/30/2006] [Indexed: 01/24/2023]
Abstract
AIMS/HYPOTHESIS The immune-mediated elimination of pancreatic beta cells in type 1 diabetes involves release of cytotoxic cytokines such as IL-1beta and IFNgamma, which induce beta cell death in vitro by mechanisms that are both dependent and independent of nitric oxide (NO). Nuclear factor kappa B (NFkappaB) is a critical signalling molecule in inflammation and is required for expression of the gene encoding inducible NO synthase (iNOS) and of pro-apoptotic genes. NFkappaB has recently been shown to associate with chromatin-modifying enzymes histone acetyltransferases and histone deacetylases (HDAC), and positive effects of HDAC inhibition have been obtained in several inflammatory diseases. Thus, the aim of this study was to investigate whether HDAC inhibition protects beta cells against cytokine-induced toxicity. MATERIALS AND METHODS The beta cell line, INS-1, or intact rat islets were precultured with HDAC inhibitors suberoylanilide hydroxamic acid or trichostatin A in the absence or presence of IL-1beta and IFNgamma. Effects on insulin secretion and NO formation were measured by ELISA and Griess reagent, respectively. iNOS levels and NFkappaB activity were measured by immunoblotting and by immunoblotting combined with electrophoretic mobility shift assay, respectively. Viability was analysed by 3-(4,5-dimethyldiazol-2-yl)-2,5-diphenyl-tetrazolium bromide and apoptosis by terminal deoxynucleotidyl transferase mediated dUTP nick end labeling (TUNEL) assay and histone-DNA complex ELISA. RESULTS HDAC inhibition reduced cytokine-mediated decrease in insulin secretion and increase in iNOS levels, NO formation and apoptosis. IL-1beta induced a bi-phasic phosphorylation of inhibitor protein kappa Balpha (IkappaBalpha) with the 2nd peak being sensitive to HDAC inhibition. No effect was seen on IkappaBalpha degradation and NFkappaB DNA binding. CONCLUSIONS/INTERPRETATION HDAC inhibition prevents cytokine-induced beta cell apoptosis and impaired beta cell function associated with a downregulation of NFkappaB transactivating activity.
Collapse
Affiliation(s)
- L Larsen
- Steno Diabetes Center, 2 Niels Steensens Vej, 2820, Gentofte, Denmark
| | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Svennersten-Sjaunja K, Wiking L, Edvardsson A, Båvius AK, Larsen L, Nielsen J. Effect of frequent milking on milk fat and protein. J Anim Feed Sci 2007. [DOI: 10.22358/jafs/74167/2007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
44
|
Purup S, Larsen L. Integrated proteomics and biological assays for
characterization of non-nutritional effects
of butyric acid on intestinal cells. J Anim Feed Sci 2007. [DOI: 10.22358/jafs/74189/2007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
45
|
Larsen L, Wedholm A, Møller H, Andrén A, Lindmark-Månsson H. Proteomic study of regressions between milk yield
and whey protein composition. J Anim Feed Sci 2007. [DOI: 10.22358/jafs/74194/2007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
46
|
Abstract
PURPOSE The purposes or this study were to (a) describe the prevention practices of nurse practitioners (NPs) regarding childhood obesity, (b) compare the practices of NPs by specialty, practice setting, and awareness of childhood obesity prevention guidelines, (c) identify relationships between prevention practices and demographic variables of NPs, and (d) examine the resources for and barriers to implementing prevention practices. DATA SOURCES A convenience sample of 99 family NPs (FNPs) and pediatric NPs (PNPs) from the Intermountain area was used. Participants completed a questionnaire based on documented risk factors for childhood obesity as well as prevention guidelines developed by the American Academy of Pediatrics (AAP). CONCLUSIONS NPs working in family practice or general pediatric practice settings were not consistently using the BMI-for-age index to screen for childhood obesity, as recommended by the AAP. However, they were teaching parents to promote healthy food choices and physical activity in their families. PNPs and FNPs working in a pediatric practice setting and NPs who were aware of prevention guidelines were more likely to perform several prevention strategies than FNPs working in a family practice setting and those who were unaware of guidelines. Major barriers to implementing childhood obesity prevention strategies included parental attitudes, the American lifestyle, and lack of resources for both the NP and the family. The main resources NPs used in preventing childhood obesity were a dietician, journal articles, and Web sites. IMPLICATIONS FOR PRACTICE Although the majority of the NPs in this study reported being aware of childhood obesity prevention guidelines (73.7%), most were not consistently using BMI for age or monitoring children at increased risk for obesity. Because childhood obesity is escalating at such a rapid rate, it is critical that NPs working in family practice and pediatric practice settings take the necessary steps to help curtail obesity in childhood, including calculating BMI for age, targeting children at risk, and helping families develop healthy nutrition and physical activity habits. In addition to proper health supervision of children, NPs also need to be advocates in their communities to overcome barriers to childhood obesity prevention.
Collapse
Affiliation(s)
- L Larsen
- McKinney Pediatrics, McKinney, TX 75069, USA.
| | | | | | | |
Collapse
|
47
|
Chabanova E, Johnsen HE, Knudsen LM, Larsen L, Løgager V, Yingru S, Thomsen HS. Magnetic resonance investigation of bone marrow following priming and stem cell mobilization. J Magn Reson Imaging 2006; 24:1364-70. [PMID: 17083110 DOI: 10.1002/jmri.20760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
PURPOSE To evaluate application of MRI and magnetic resonance spectroscopy (MRS) to monitor bone marrow cellularity during pretransplant priming with chemotherapy and hematopoietic growth factor (HGF) administration. MATERIALS AND METHODS A total of 10 lymphoma and myeloma patients, in remission following induction therapy and considered eligible for high-dose therapy and autologous stem cell transplantation, were included in the study. MR investigation was scheduled four times: at study entry, and one, two, and four weeks following priming. Priming with cyclophosphamide and recombinant human granulocyte colony-stimulating factor (rhG-CSF) started the day after study entry. MR parameters studied in a region of interest were as follows: bone marrow intensity on short-time inversion-recovery (STIR) turbo spin-echo (TSE; thus STIRTSE) and on T1-weighted TSE (T1TSE) images, T2 value for fat component, T2 value for water component, water/fat ratio (W/F), T1 value for fat component, and T1 value for water component. RESULTS The results did not support the hypothesis that hematopoietic expansion quantitated and monitored by MR correlates to the level of mobilized progenitor cells. CONCLUSION The results indicate that release of stem cells is a more complex phenomenon than hematopoietic expansion and reduction of fat tissue in bone marrow.
Collapse
Affiliation(s)
- E Chabanova
- Department of Diagnostic Radiology, Copenhagen University Hospital at Herlev, Herlev, Denmark.
| | | | | | | | | | | | | |
Collapse
|
48
|
Larsen L, Størling J, Darville M, Eizirik DL, Bonny C, Billestrup N, Mandrup-Poulsen T. Extracellular signal-regulated kinase is essential for interleukin-1-induced and nuclear factor kappaB-mediated gene expression in insulin-producing INS-1E cells. Diabetologia 2005; 48:2582-90. [PMID: 16283237 DOI: 10.1007/s00125-005-0039-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2005] [Accepted: 07/21/2005] [Indexed: 10/25/2022]
Abstract
AIMS/HYPOTHESIS The beta cell destruction and insulin deficiency that characterises type 1 diabetes mellitus is partially mediated by cytokines, such as IL-1beta, and by nitric oxide (NO)-dependent and -independent effector mechanisms. IL-1beta activates mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinase (ERK), p38 and c-Jun NH2-terminal kinase (JNK), and the nuclear factor kappa B (NFkappaB) pathway. Both pathways are required for expression of the gene encoding inducible nitric oxide synthase (iNOS) and for IL-1beta-mediated beta cell death. The molecular mechanisms by which these two pathways regulate beta cell Nos2 expression are currently unknown. Therefore, the aim of this study was to clarify the putative crosstalk between MAPK and NFkappaB activation in beta cells. MATERIALS AND METHODS The MAPKs ERK, p38 and JNK were inhibited by SB203580, PD98059 or Tat-JNK binding domain or by cells overexpressing the JNK binding domain. The effects of MAPK inhibition on IL-1beta-induced iNOS production and kappa B inhibitor protein (IkappaB) degradation were examined by western blotting. NFkappaB DNA binding was investigated by electrophoretic mobility shift assay, while NFkappaB-induced gene transcription was evaluated by gene reporter assays. RESULTS Inhibition of the MAPKs did not affect IkappaB degradation or NFkappaB DNA binding. However, inhibition of ERK reduced NFkappaB-mediated Nos2 expression; serine 276 phosphorylation of the p65 unit of the NFkappaB complex seemed critical, as evaluated by amino acid mutation analysis. CONCLUSIONS/INTERPRETATION ERK activity is required for NFkappaB-mediated transcription of Nos2 in insulin-producing INS-1E cells, indicating that ERK regulates Nos2 expression by increasing the transactivating capacity of NFkappaB. This may involve phosphorylation of Ser276 on p65 by an as yet unidentified kinase.
Collapse
Affiliation(s)
- L Larsen
- Steno Diabetes Center, 2 Niels Steensens Vej, 2820, Gentofte, Denmark
| | | | | | | | | | | | | |
Collapse
|
49
|
Talente GM, Staton LJ, Carroll MR, Mushtaq M, Larsen L. 227 ACGME DUTY HOUR REQUIREMENTS: WHAT DO FACULTY THINK? J Investig Med 2005. [DOI: 10.2310/6650.2005.00006.226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
50
|
Chwalisz K, Larsen L, McCrary K, Edmonds A. Effects of the novel selective progesterone receptor modulator (SPRM) asoprisnil on selected hormonal parameters in subjects with leiomyomata. Fertil Steril 2004. [DOI: 10.1016/j.fertnstert.2004.07.825] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|