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Mikkelsen P, Andersen A, Shih HJS, Rowley KM, Kulig K. Flexor hallucis longus tendon morphology in dancers clinically diagnosed with tendinopathy. J Ultrasound 2024; 27:41-49. [PMID: 37356071 PMCID: PMC10908900 DOI: 10.1007/s40477-023-00793-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 04/24/2023] [Indexed: 06/27/2023] Open
Abstract
PURPOSE The unique demands of dance technique make dancers more prone to certain pathologies especially of the foot and ankle. Flexor hallucis longus (FHL) tendinopathy, colloquially known as "dancer's tendinopathy," is common in dancers and not well studied. The purpose of this study was to assess if morphological alterations in tendon structure occur as an adaptive response to dance activity by comparing the FHL tendon in dancers to non-dancers, and if pathology further alters tendon morphology in dancers clinically diagnosed with tendinopathy. METHODS Three groups of ten participants were recruited (healthy non-dancers, healthy dancers, and dancers with FHL tendinopathy). Ultrasound images of the FHL tendons were analyzed for macromorphology by measuring the tendon thickness. The micromorphology was analyzed by determining the peak spatial frequency radius of the tendon. Our study did find increased tendon proper and composite tendon thickness in dancers with tendinopathy but no difference between asymptomatic dancers and non-dancers. RESULTS There was no significant difference in micromorphology found between any of the groups. As expected, dancers with tendinopathy demonstrated increased composite tendon and tendon proper thickness however, there was no evidence of adaptive thickening of the FHL tendon as might be expected for the dance population. There was also no evidence of micromorphological changes in the presence of clinically diagnosed FHL tendinopathy. CONCLUSION Because of the limited normative data for this pathology, these results can help improve diagnosis and therefore treatment for dancers to decrease the impact of this injury on their careers.
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Affiliation(s)
- Pamela Mikkelsen
- Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 Alcazar St #155, Los Angeles, CA, 90033, USA.
| | - Alyssa Andersen
- Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 Alcazar St #155, Los Angeles, CA, 90033, USA
| | - Hai-Jung Steffi Shih
- Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 Alcazar St #155, Los Angeles, CA, 90033, USA
- Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, NY, USA
| | - K Michael Rowley
- Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 Alcazar St #155, Los Angeles, CA, 90033, USA
- Kinesiology Department, California State University East Bay, Hayward, CA, USA
| | - Kornelia Kulig
- Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 Alcazar St #155, Los Angeles, CA, 90033, USA
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Bitencourt FV, Nascimento GG, Costa SA, Andersen A, Sandbæk A, Leite FRM. Co-occurrence of Periodontitis and Diabetes-Related Complications. J Dent Res 2023; 102:1088-1097. [PMID: 37448314 DOI: 10.1177/00220345231179897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/15/2023] Open
Abstract
Periodontitis is a common finding among people with diabetes mellitus (DM) and has been cited as a DM complication. Whether and how periodontitis relates to other diabetes-related complications has yet to be explored. This study aims to examine the clustering of periodontitis with other diabetes-related complications and explore pathways linking diabetes-related complications with common risk factors. Using data from participants with DM across 3 cycles of the National Health and Nutrition Examination Survey (NHANES) (n = 2,429), we modeled direct and indirect pathways from risk factors to diabetes-related complications, a latent construct comprising periodontitis, cardiovascular diseases, proteinuria, and hypertension. Covariates included age, sex, socioeconomic status (SES), smoking, physical activity, healthy diet, alcohol consumption, hemoglobin A1c (HbA1c), dyslipidemia, and body mass index (BMI). Sensitivity analyses were performed considering participants with overweight/obesity and restricting the sample to individuals without DM. Periodontitis clustered with other diabetes complications, forming a latent construct dubbed diabetes-related complications. In NHANES III, higher HbA1c levels and BMI, older age, healthy diet, and regular physical activity were directly associated with the latent variable diabetes-related complications. In addition, a healthy diet and BMI had a total effect on diabetes-related complications. Although sex, smoking, dyslipidemia, and SES demonstrated no direct effect on diabetes-related complications in NHANES III, a direct effect was observed using NHANES 2011-2014 cycles. Sensitivity analysis considering participants with overweight/obesity and without DM showed consistent results. Periodontal tissue breakdown seems to co-occur with multiple diabetes-related complications and may therefore serve as a valuable screening tool for other well-known diabetes-related complications.
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Affiliation(s)
- F V Bitencourt
- Department of Dentistry and Oral Health, Section for Periodontology, Aarhus University, Aarhus, Denmark
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - G G Nascimento
- National Dental Research Institute Singapore, National Dental Centre Singapore, Singapore
- Oral Health Academic Clinical Programme, Duke-NUS Medical School, Singapore
| | - S A Costa
- Graduate Dentistry Program, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - A Andersen
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - A Sandbæk
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | - F R M Leite
- National Dental Research Institute Singapore, National Dental Centre Singapore, Singapore
- Oral Health Academic Clinical Programme, Duke-NUS Medical School, Singapore
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3
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Rode M, Bioue A, Miano F, Bruus H, Kiørboe T, Andersen A. Acoustic tethering of microorganisms. J Exp Biol 2022; 225:278470. [PMID: 36217771 DOI: 10.1242/jeb.244089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 09/21/2022] [Indexed: 11/20/2022]
Abstract
We show how to construct and apply a setup to acoustically tether and enable behavioral observations of individual microorganisms using simple laboratory equipment and a standard light microscope. We explore the capability of the setup with the freely swimming dinoflagellate Alexandrium minutum as study organism. We demonstrate that the setup allows us to tether cells in focus in the mid-plane of the sample chamber and make observations of individual organisms at high magnification without affecting their flagellar beat frequencies. We discuss the prospect of the method to explore appendage motion and swimming kinematics of other flagellates and ciliates.
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Affiliation(s)
- M Rode
- Centre for Ocean Life, National Institute of Aquatic Resources, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - A Bioue
- Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - F Miano
- Centre for Ocean Life, National Institute of Aquatic Resources, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - H Bruus
- Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - T Kiørboe
- Centre for Ocean Life, National Institute of Aquatic Resources, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - A Andersen
- Centre for Ocean Life, National Institute of Aquatic Resources, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
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Bonnesen K, Klok FA, Andersen MJ, Andersen A, Nielsen-Kudsk JE, Mellemkjaer S, Sorensen HT, Schmidt M. Chronic thromboembolic pulmonary hypertension and mortality after venous thromboembolism: a nationwide population-based cohort study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
One of the ultimate long-term complications of venous thromboembolism (VTE) is chronic thromboembolic pulmonary hypertension (CTEPH). CTEPH is a condition defined as an increased mean pulmonary arterial pressure of at least 25 mmHg at rest and abnormal pulmonary artery resistance measured by right heart catheterization. To our knowledge, no study has compared mortality in VTE patients developing CTEPH to those who do not.
Purpose
We aimed to investigate the influence of CTEPH on long-term VTE mortality, by examining how receiving any pulmonary hypertension (PH) diagnosis following VTE influenced mortality.
Methods
We conducted a population-based cohort study of all adult Danish patients with an incident in or outpatient VTE diagnosis from 1995 through 2016. We excluded patients with a previous PH diagnosis. We defined CTEPH as receiving any PH diagnosis within two years following VTE. We categorized VTE by type (deep venous thrombosis [DVT] or pulmonary embolism [PE]) and provoking risk factors. We followed patients from two years after VTE until the first of death, emigration, or 31 December 2016. We calculated mortality rates and standardized mortality rate ratios (SMRs) of the association between PH and all-cause mortality and cause-specific mortality due to cancer and cardiovascular diseases. We also stratified the analyses by baseline presence of comorbidity (congestive heart failure, chronic pulmonary disease, and/or interstitial pulmonary disease).
Results
In 89,062 VTE patients alive two years after their VTE, 724 developed PH. The mortality rate per 1,000 person-years was 121 (95% confidence interval [CI]: 110–134) in patients with PH and 48 (95% CI: 47–48) in patients without PH. The SMR was 2.05 (95% CI: 1.77–2.37) for all VTE patients, 2.20 (95% CI: 1.53–3.16) for DVT patients, and 1.72 (95% CI: 1.47–2.01) for PE patients. The SMR was 1.79 (95% CI: 1.28–2.51) in VTE patients with a provoking VTE risk factor and 2.15 (95% CI: 1.83–2.53) in VTE patients without a provoking VTE risk factor. PH was associated with increased cause-specific mortality due to cardiovascular diseases (SMR=2.31, 95% CI: 1.75–3.06), but not cancer (SMR=0.94, 95% CI: 0.64–1.38). The SMR was 2.36 (95% CI: 2.06–2.71) in patients with comorbidity and 1.80 (95% CI: 1.45–2.24) in patients without comorbidity.
Conclusion
Development of PH, as a measure of CTEPH, within two years following incident VTE was associated with two-fold increased mortality in two-year VTE survivors. The increase in mortality was driven by cardiovascular causes.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- K Bonnesen
- Aarhus University and Aarhus University Hospital , Aarhus N , Denmark
| | - F A Klok
- Leiden University Medical Center , Leiden , The Netherlands
| | | | - A Andersen
- Aarhus University Hospital , Aarhus , Denmark
| | | | | | - H T Sorensen
- Aarhus University and Aarhus University Hospital , Aarhus N , Denmark
| | - M Schmidt
- Aarhus University and Aarhus University Hospital , Aarhus N , Denmark
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Jentz C, Sandbæk A, Andersen A, Kennedy H, Sørensen L. Description of a clinical intervention among patients admitted to the medium secure forensic psychiatric services in Central Denmark Region. Eur Psychiatry 2022. [PMCID: PMC9567130 DOI: 10.1192/j.eurpsy.2022.1543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Patients with schizophrenia suffer from increased mortality rates equivalent to 15-20 years shorter life expectancy. Up to 60% of this excess mortality can be explained by preventable, somatic conditions like cardiovascular, metabolic, and respiratory comorbidities. As forensic psychiatric (FP) patients often experience the triple stigmatization of mental illness, substance misuse and criminal conviction, the risk of suboptimal diagnosis and treatment may be high. Although benefits from the addition of general practitioner (GP) services to non-FP wards have been shown elsewhere, this cross-sectoral approach has never been attempted in a Danish FP ward.
Objectives
One purpose of this project is to evaluate the associations between self-reported quality of life and objective measures of somatic health.
Methods
A clinical intervention in which a GP consults patients in all medium secure wards in the Central Denmark Region (N=72). The consultation includes a physical examination, medication review, and evaluation of blood samples. Data is collected from: electronic patient files and questionnaires regarding quality of life (SF-12), lifestyle, and attitude towards GP services.
Results
The population will be described in regards to socio-demographic, clinical, and forensic characteristics. Associations will be made between quality of life (SF-12), metabolic syndrome, blood markers, and heart-SCORE risk. Risk profiles for endocrinologic and coronary illness will be examined.
Conclusions
Results may guide future health interventions and will be used as a basis for adjustments to the current project.
Disclosure
No significant relationships.
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Najafzadeh V, Secher J, Andersen A, Jørgensen N, Strøbech L, Hyttel P. 23 Biopsied invitro-produced bovine blastocysts survive vitrification better than slow freezing. Reprod Fertil Dev 2021. [DOI: 10.1071/rdv33n2ab23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Trophectoderm (TE) biopsying for single nucleotide polymorphisms (SNPs) analysis is being implemented as a tool for the selection of elite bovine embryos. This biopsy method renders ample cells for analysis without compromising the inner cell mass (ICM), and the blastocyst recovers quickly after biopsy. To use the SNP data for embryo selection before the transfer, the blastocysts need to be cryopreserved either with vitrification or slow-freezing. In intact invitro-produced (IVP) blastocysts, vitrification has already proven optimal regarding embryo survival and pregnancy rates. This study aimed to investigate which cryopreservation approach is superior regarding blastocyst re-expansion rate as well as ICM, TE, and dead cell numbers after biopsying bovine IVP blastocysts. All IVP media and vitrification kits were from IVF Bioscience, and ethylene glycol with sucrose was from EggTech. Oocytes from slaughterhouse ovaries were used for blastocyst IVP. At Day 7, the blastocysts were pooled and randomised into 3 groups: (1) biopsy-control (BC), (2) biopsy-vitrification (BV), (3) biopsy-slow freeze (BSF). Subsequently, 5 to 10 TE cells were biopsied in BO-transfer medium using a 25-µm (inner diameter) biopsy pipette and flicking against the holding pipette. The BC group was incubated at 6% CO2 and 38.8°C for 5h. After scoring the re-expansion rate, the blastocysts were fixed with 4% paraformaldehyde/sucrose for further analyses. The BV and BSF groups were subjected to cryopreservation/thawing protocols according to the manufacturers’ instructions. Both groups, recovered under the same culture conditions as BC, were subsequently scored for re-expansion rate and finally fixed. For cell counting, the embryos were stained with Hoechst (DNA) and CDX2 (TE), combined with the TUNEL staining. ImageJ software (National Institutes for Health) was used for cell counting. P<0.05 was considered statistically significant and was determined using Fisher’s exact test for blastocyst re-expansion rate and Student’s t-test for cell numbers. The re-expansion rate in BV was 81% (61/75), which was significantly lower than in BC (95%; 225/236; P<0.005). In BSF, the re-expansion rate was 52% (28/54), which was significantly lower than in both BV and BC (both P<0.005). For cell counts, 18, 18, and 14 embryos, pooled from 3 to 4 independent IVP replicates, were analysed in BC, BV, and BSF, respectively. The average numbers of ICM cells in BV and BSF were 36±5 and 37±11, respectively, and neither was statistically different from BC (34±7; P>0.05). The average cell counts for TE cells in BV and BSF were 59±6 and 47±10, respectively, and neither was statistically different from BC (56±8; P>0.05). The average numbers of dead cells in BV and BSF were 8±3 and 9±2, respectively, and neither was statistically different from BC (10±4; P>0.05). In summary, the biopsied bovine IVP blastocysts recovered better after vitrification, and neither of cryopreservation methods had any effect on the numbers of ICM, TE, or dead cells.
This project was supported by Innovation Fund Denmark and the Danish Milk Levy Foundation.
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Schaltz-Buchholzer F, Biering-Sørensen S, Lund N, Monteiro I, Umbasse P, Fisker AB, Andersen A, Rodrigues A, Aaby P, Benn CS. Early BCG Vaccination, Hospitalizations, and Hospital Deaths: Analysis of a Secondary Outcome in 3 Randomized Trials from Guinea-Bissau. J Infect Dis 2019; 219:624-632. [PMID: 30239767 DOI: 10.1093/infdis/jiy544] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 09/11/2018] [Indexed: 11/14/2022] Open
Abstract
Background This study was performed to examine the effects of early BCG vaccination on the risk, cause, and severity of infant hospitalizations. The analysis included 3 trials randomizing low-weight neonates to early BCG vaccination (intervention) versus no BCG vaccination (usual practice in low-weight neonates, control), with hospitalizations as secondary outcome. Methods Hospitalization data were collected at the pediatric ward of the National Hospital. Effects of BCG vaccination on hospitalization risk were assessed in Cox models providing overall and major disease-group incidence rate ratios (IRRs). Severity was assessed by means of in-hospital case-fatality rates and compared by group as cohort study risk ratios (RRs). Results Among 6583 infants (3297 in BCG group, 3286 controls), there were 908 infant hospitalizations (450 BCG, 458 controls) and 135 in-hospital deaths (56 BCG, 79 controls). The neonatal (28 days), 6-week, and infant (1-year) BCG versus control hospitalization IRRs were 0.97 (95% confidence interval [CI], .72-1.31), 0.95 (.73-1.24), and 0.96 (.84-1.10). Corresponding BCG versus control case-fatality rate RRs were 0.58 (95% CI, .35-.94), 0.56 (.35-.90), and 0.72 (.53-.99). BCG vaccination tended to reduce neonatal and infant sepsis hospitalization rates (IRR, 0.75 [95% CI, .50-1.13] and 0.78 [.55-1.11], respectively), and it reduced the neonatal in-hospital sepsis mortality rate (RR, 0.46; 95% CI, .22-.98). There were no confirmed hospitalizations for tuberculosis. Conclusions BCG vaccination did not affect hospitalization rates but reduced in-hospital mortality rates significantly, primarily by preventing fatal cases of sepsis. The observed beneficial effects of BCG on the in-hospital mortality rate were entirely nonspecific. Clinical Trials Registration NCT00146302, NCT00168610, and NCT00625482.
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Affiliation(s)
- Frederik Schaltz-Buchholzer
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau.,Research Center for Vitamins and Vaccines, Statens Serum Institut, Copenhagen, Denmark.,OPEN, Institute of Clinical Research and Danish Institute of Advanced Science, University of Southern Denmark, Odense, and Odense University Hospital
| | - S Biering-Sørensen
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau.,Research Center for Vitamins and Vaccines, Statens Serum Institut, Copenhagen, Denmark
| | - N Lund
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau
| | - I Monteiro
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau
| | - P Umbasse
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau
| | - A B Fisker
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau.,Research Center for Vitamins and Vaccines, Statens Serum Institut, Copenhagen, Denmark.,OPEN, Institute of Clinical Research and Danish Institute of Advanced Science, University of Southern Denmark, Odense, and Odense University Hospital
| | - A Andersen
- Research Center for Vitamins and Vaccines, Statens Serum Institut, Copenhagen, Denmark
| | - A Rodrigues
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau
| | - P Aaby
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau
| | - C S Benn
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau.,Research Center for Vitamins and Vaccines, Statens Serum Institut, Copenhagen, Denmark.,OPEN, Institute of Clinical Research and Danish Institute of Advanced Science, University of Southern Denmark, Odense, and Odense University Hospital
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Andersen A, Due P, Michelsen SI. Prevalence of children and youth with chronic conditions – self-reported and register based data. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky212.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- A Andersen
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - P Due
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - SI Michelsen
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
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Michelsen SI, Due P, Andersen A. School and education in children and adolescents with chronic conditions. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky214.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- SI Michelsen
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - P Due
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - A Andersen
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
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Solheim T, Fornander F, Møgelvang R, Poulsen N, Andersen A, Eisum A, Duno M, Bundgaard H, Vissing J. DUCHENNE MUSCULAR DYSTROPHY - GENETICS. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.266] [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: 11/17/2022]
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Nielsen-Kudsk JE, Andersen A, Andersen G, Sjostrand C, Rhodes JF, Kasner SE, Sondergaard L. P6382Atrial fibrillation after closure of persistent foramen ovale in the REDUCE clinical trial. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - A Andersen
- Aarhus University Hospital, Cardiology, Aarhus N, Denmark
| | - G Andersen
- Aarhus University Hospital, Neurology, Aarhus, Denmark
| | - C Sjostrand
- Karolinska University Hospital, Neurology, Stockholm, Sweden
| | - J F Rhodes
- Nicklaus Childrens Hospital, Cardiology, Miami, United States of America
| | - S E Kasner
- University of Pennsylvania, Neurology, Philadelphia, United States of America
| | - L Sondergaard
- Rigshospitalet - Copenhagen University Hospital, Cardiology, Copenhagen, Denmark
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Stenslik MJ, Evans A, Pomerleau F, Weeks R, Huettl P, Foreman E, Turchan-Cholewo J, Andersen A, Cass WA, Zhang Z, Grondin RC, Gash DM, Gerhardt GA, Bradley LH. Methodology and effects of repeated intranasal delivery of DNSP-11 in awake Rhesus macaques. J Neurosci Methods 2018; 303:30-40. [PMID: 29614295 DOI: 10.1016/j.jneumeth.2018.03.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/16/2018] [Accepted: 03/17/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND To determine if the intranasal delivery of neuroactive compounds is a viable, long-term treatment strategy for progressive, chronic neurodegenerative disorders, such as Parkinson's disease (PD), intranasal methodologies in preclinical models comparable to humans are needed. NEW METHOD We developed a methodology to evaluate the repeated intranasal delivery of neuroactive compounds on the non-human primate (NHP) brain, without the need for sedation. We evaluated the effects of the neuroactive peptide, DNSP-11 following repeated intranasal delivery and dose-escalation over the course of 10-weeks in Rhesus macaques. This approach allowed us to examine striatal target engagement, safety and tolerability, and brain distribution following a single 125I-labeled DNSP-11 dose. RESULTS Our initial data support that repeated intranasal delivery and dose-escalation of DNSP-11 resulted in bilateral, striatal target engagement based on neurochemical changes in dopamine (DA) metabolites-without observable, adverse behavioral effects or weight loss in NHPs. Furthermore, a 125I-labeled DNSP-11 study illustrates diffuse rostral to caudal distribution in the brain including the striatum-our target region of interest. COMPARISON WITH EXISTING METHODS The results of this study are compared to our experiments in normal and 6-OHDA lesioned rats, where DNSP-11 was repeatedly delivered intranasally using a micropipette with animals under light sedation. CONCLUSIONS The results from this proof-of-concept study support the utility of our repeated intranasal dosing methodology in awake Rhesus macaques, to evaluate the effects of neuroactive compounds on the NHP brain. Additionally, results indicate that DNSP-11 can be safely and effectively delivered intranasally in MPTP-treated NHPs, while engaging the DA system.
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Affiliation(s)
- M J Stenslik
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - A Evans
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - F Pomerleau
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - R Weeks
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - P Huettl
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - E Foreman
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - J Turchan-Cholewo
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - A Andersen
- Department of Magnetic Resonance Imaging and Spectroscopy Center, University of Kentucky College of Medicine, United States
| | - W A Cass
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - Z Zhang
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - R C Grondin
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - D M Gash
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - G A Gerhardt
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States
| | - L H Bradley
- Department of Neuroscience and Brain Restoration Center, University of Kentucky College of Medicine, United States; Department of Molecular & Cellular Biochemistry and Center of Structural Biology, University of Kentucky College of Medicine, United States.
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Holstein BE, Andersen A, Denbaek AM, Johansen A, Michelsen SI, Due P. Short communication: Persistent socio-economic inequality in frequent headache among Danish adolescents from 1991 to 2014. Eur J Pain 2018; 22:935-940. [PMID: 29349882 DOI: 10.1002/ejp.1179] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2017] [Indexed: 12/24/2022]
Abstract
BACKGROUND The association between socio-economic status (SES) and headache among adolescents is an understudied issue, and no study has examined whether such an association changes over time. The aim was to examine trends in socio-economic inequality in frequent headache among 11- to 15-year-olds in Denmark from 1991 to 2014, using occupational social class (OSC) as indicator of SES. METHODS The study applies data from the Danish part of the international Health Behaviour in School-aged Children (HBSC) study. HBSC includes nationally representative samples of 11-, 13- and 15-year-olds. This study combines data from seven data survey years from 1991 to 2014, participation rate 88.6%, n = 31,102. We report absolute inequality as per cent difference in frequent headache between high and low OSC and relative inequality as odds ratio for frequent headache by OSC. RESULTS In the entire study population, 10.4% reported frequent headache. There was a significant increase in frequent headache from 8.0% in 1991 to 12.9% in 2014, test for trend, p < 0.0001. This increasing trend was significant in all OSCs. The prevalence of frequent headache was significantly higher in low than high OSC, OR = 1.50 (95% CI: 1.34-1.67). This socio-economic inequality in frequent headache was persistent from 1991 to 2014. CONCLUSION There was a significant and persistent socio-economic inequality, i.e. increasing prevalence of frequent headache with decreasing OSC. The association between socio-economic position and headache did not significantly change over time, i.e. the statistical interaction between OSC and survey year was insignificant. SIGNIFICANCE The prevalence of frequent headache among adolescents increases with decreasing SES. This socio-economic inequality has been persistent among adolescents in Denmark from 1991 to 2014. Clinicians should be aware of this social inequality.
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Affiliation(s)
- B E Holstein
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - A Andersen
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - A M Denbaek
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - A Johansen
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - S I Michelsen
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - P Due
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
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14
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Nissen TN, Birk NM, Blok BA, Arts RJW, Andersen A, Kjærgaard J, Thøstesen LM, Hoffmann T, Jeppesen DL, Nielsen SD, Kofoed PE, Stensballe LG, Aaby P, Ruhwald M, Netea MG, Benn CS, Pryds O. Bacillus Calmette-Guérin vaccination at birth and in vitro cytokine responses to non-specific stimulation. A randomized clinical trial. Eur J Clin Microbiol Infect Dis 2017; 37:29-41. [PMID: 28890996 DOI: 10.1007/s10096-017-3097-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/21/2017] [Indexed: 11/29/2022]
Abstract
Several studies have shown increased in vitro cytokine responses to non-related pathogens after Bacillus Calmette-Guérin (BCG) vaccination. A total of 158 infants (80 BCG administered within 7 days of birth; 78 controls) were bled 4 days post-randomization, and at age 3 and 13 months. Geometric mean concentrations of IL-1β, TNF-α, IL-6 (24 h stimulation) and IFN-γ, IL-10, IL-17, IL-22 (96 h stimulation) in response to in vitro stimulation with RPMI, LPS, PHA, Escherichia coli, Streptococcus pneumoniae, Candida albicans and BCG were compared among BCG vaccinated children and controls. BCG vaccination did not affect in vitro cytokine production, except IFN-γ and IL-22 response to BCG. Stratifying for 'age at randomization' we found a potentiating effect of BCG on cytokine production (TNF-α, IL-6, IL-10) in the 4 days post randomization stimulations, among children who were vaccinated at age 2-7 days versus age 0-1 days. BCG vaccination did not potentiate cytokine production to non-BCG antigens. At 4 days post randomization, BCG was associated with higher cytokine production in the later randomized children.
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Affiliation(s)
- T N Nissen
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark.
| | - N M Birk
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark
| | - B A Blok
- Division of Experimental Internal Medicine, Department of Internal Medicine, Radboud University Medical Center and Radboud Center for Infectious Diseases, Geert Grooteplein 10, 6525GA, Nijmegen, The Netherlands.,Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Artillerivej 5, DK-2300, Copenhagen S, Denmark.,Odense Patient data Explorative Network, Odense University Hospital/Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - R J W Arts
- Division of Experimental Internal Medicine, Department of Internal Medicine, Radboud University Medical Center and Radboud Center for Infectious Diseases, Geert Grooteplein 10, 6525GA, Nijmegen, The Netherlands
| | - A Andersen
- Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Artillerivej 5, DK-2300, Copenhagen S, Denmark
| | - J Kjærgaard
- The Child and Adolescent Clinic 4072, Juliane Marie Centret, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, DK-2100, Copenhagen Ø, Denmark
| | - L M Thøstesen
- Department of Pediatrics, Kolding Hospital, Skovvangen 2-8, DK-6000, Kolding, Denmark
| | - T Hoffmann
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark
| | - D L Jeppesen
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark
| | - S D Nielsen
- Viro-immunology Research Unit, Department of Infectious Diseases, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, DK-2100, Copenhagen Ø, Denmark
| | - P-E Kofoed
- Department of Pediatrics, Kolding Hospital, Skovvangen 2-8, DK-6000, Kolding, Denmark
| | - L G Stensballe
- The Child and Adolescent Clinic 4072, Juliane Marie Centret, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, DK-2100, Copenhagen Ø, Denmark
| | - P Aaby
- Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Artillerivej 5, DK-2300, Copenhagen S, Denmark
| | - M Ruhwald
- Human Immunology, Infectious Disease Immunology, Division of Vaccine, Statens Serum Institut, DK-2300, Artillerivej 5, Denmark
| | - M G Netea
- Division of Experimental Internal Medicine, Department of Internal Medicine, Radboud University Medical Center and Radboud Center for Infectious Diseases, Geert Grooteplein 10, 6525GA, Nijmegen, The Netherlands
| | - C S Benn
- Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Artillerivej 5, DK-2300, Copenhagen S, Denmark.,Odense Patient data Explorative Network, Odense University Hospital/Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - O Pryds
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark
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15
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Schultz J, Gade I, Andersen A, Ringgaard S, Kjaergaard B, Nielsen-Kudsk J. P4923A novel experimental in vivo model of acute pulmonary embolism. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p4923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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16
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Rasmussen SM, Biering-Sørensen S, Byberg S, Andersen A, Bjerregaard-Andersen M, Rodrigues A, Benn CS, Martins CL, Aaby P. The effect of early measles vaccination at 4.5 months of age on growth at 9 and 24 months of age in a randomized trial in Guinea-Bissau. BMC Pediatr 2016; 16:199. [PMID: 27912735 PMCID: PMC5135799 DOI: 10.1186/s12887-016-0738-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 11/26/2016] [Indexed: 11/23/2022] Open
Abstract
Background Providing an early, additional measles vaccine (MV) at 4.5 months of age has been shown to reduce child mortality in low-income countries. We studied the effects on growth at 9 and 24 months of age. Methods A randomized controlled trial was conducted in Guinea-Bissau from 2003–2007 including 6,648 children. Children were randomized 1:1:1 to receive Edmonston-Zagreb measles vaccine at 4.5 and 9 months of age (group A), no vaccine at 4.5 months and Edmonston-Zagreb measles vaccine at 9 months (group B), or no vaccine at 4.5 months and Schwarz measles vaccine at 9 months (group C) Data on anthropometrics were obtained at enrolment at 4.5 months of age and again at 9 and 24 months of age. Analyses were stratified by sex, season of enrolment, and neonatal vitamin A supplementation (NVAS) status, as all these factors have been shown to modify the effect of early MV on mortality. Results Overall there was no effect of early MV on anthropometry at 9 months. At 24 months children who had received early MV had a significantly larger mid-upper-arm-circumference (MUAC/in cm) (Difference = 0.08; 95% CI (0.02;0.14)) compared with children in the control group; this effect was most pronounced among girls (0.12 (0.03;0.20)). The effect of early MV on MUAC remained significant in the dry season and in girls who received placebo rather than NVAS. Conclusion Early MV was associated with a larger MUAC particularly in girls. These results indicate that a two-dose measles vaccination schedule might not only reduce child mortality but also improve growth. Trial registration ClinicalTrials.gov NCT00168558. Registered September 9, 2005, retrospectively registered Electronic supplementary material The online version of this article (doi:10.1186/s12887-016-0738-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- S M Rasmussen
- Bandim Health Project, Indepth Network, Apartado 861, 1004, Bissau Codex, Guinea-Bissau.,Bandim Health Project, Research Center for Vitamins and Vaccines (CVIVA), Statens Serum Institut, Artillerivej 5, 2300, Copenhagen S, Denmark
| | - S Biering-Sørensen
- Bandim Health Project, Indepth Network, Apartado 861, 1004, Bissau Codex, Guinea-Bissau.,Bandim Health Project, Research Center for Vitamins and Vaccines (CVIVA), Statens Serum Institut, Artillerivej 5, 2300, Copenhagen S, Denmark
| | - S Byberg
- Bandim Health Project, Indepth Network, Apartado 861, 1004, Bissau Codex, Guinea-Bissau.,Bandim Health Project, Research Center for Vitamins and Vaccines (CVIVA), Statens Serum Institut, Artillerivej 5, 2300, Copenhagen S, Denmark.,OPEN, Odense Patient data Explorative Network, Odense University Hospital/Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - A Andersen
- Bandim Health Project, Indepth Network, Apartado 861, 1004, Bissau Codex, Guinea-Bissau.,Bandim Health Project, Research Center for Vitamins and Vaccines (CVIVA), Statens Serum Institut, Artillerivej 5, 2300, Copenhagen S, Denmark
| | - M Bjerregaard-Andersen
- Bandim Health Project, Indepth Network, Apartado 861, 1004, Bissau Codex, Guinea-Bissau.,Bandim Health Project, Research Center for Vitamins and Vaccines (CVIVA), Statens Serum Institut, Artillerivej 5, 2300, Copenhagen S, Denmark.,Department of Endocrinology, Odense University Hospital, Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - A Rodrigues
- Bandim Health Project, Indepth Network, Apartado 861, 1004, Bissau Codex, Guinea-Bissau
| | - C S Benn
- Bandim Health Project, Indepth Network, Apartado 861, 1004, Bissau Codex, Guinea-Bissau. .,Bandim Health Project, Research Center for Vitamins and Vaccines (CVIVA), Statens Serum Institut, Artillerivej 5, 2300, Copenhagen S, Denmark. .,OPEN, Odense Patient data Explorative Network, Odense University Hospital/Institute of Clinical Research, University of Southern Denmark, Odense, Denmark.
| | - C L Martins
- Bandim Health Project, Indepth Network, Apartado 861, 1004, Bissau Codex, Guinea-Bissau
| | - P Aaby
- Bandim Health Project, Indepth Network, Apartado 861, 1004, Bissau Codex, Guinea-Bissau.,Bandim Health Project, Research Center for Vitamins and Vaccines (CVIVA), Statens Serum Institut, Artillerivej 5, 2300, Copenhagen S, Denmark
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17
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Das I, Andersen A, Akino Y. SU-F-T-68: Characterizes of Microdetectors in Electron Beam Dosimetry. Med Phys 2016. [DOI: 10.1118/1.4956203] [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: 11/07/2022] Open
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18
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Andersen A, Park Y, Casares-Magaz O, Elstroem U, Petersen J, Winey B, Muren L. SU-F-J-198: A Cross-Platform Adaptation of An a Priori Scatter Correction Algorithm for Cone-Beam Projections to Enable Image- and Dose-Guided Proton Therapy. Med Phys 2016. [DOI: 10.1118/1.4956106] [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: 11/07/2022] Open
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19
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Andersen A, Johnson C, Bartlett G, Das I. SU-G-BRC-04: Collimator Angle Optimization in Volumetric Modulated Arc Therapy. Med Phys 2016. [DOI: 10.1118/1.4956894] [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: 11/07/2022] Open
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20
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Das I, Andersen A. SU-F-T-445: Effect of Triaxial Cables and Microdetectors in Small Field Dosimetry. Med Phys 2016. [DOI: 10.1118/1.4956630] [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: 11/07/2022] Open
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21
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Andersen A, Casares-Magaz O, Petersen J, Toftegaard J, Bentzen L, Thörnqvist S, Muren L. OC-0163: Robustness of proton RT with different beam angles towards inter-fractional motion in the pelvis. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)31412-8] [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]
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22
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Bast L, Due P, Bendtsen P, Ersbøll A, Andersen A. Implementation fidelity and effect on smoking: X:IT - a school-randomized smoking prevention program. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv176.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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23
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Wong S, Cheng W, Wakefield D, Almeida A, Blokhin A, Almeida L, Hamilton H, Subbotin V, Hegge J, Bertin S, Milarch T, Schmidt R, Neal Z, Perillo-Nicholas A, Zhang G, Montez J, Andersen A, Rozema D, Lewis D, Kanner S. 353 HIF-2 alpha targeting with a novel RNAi delivery platform as therapy for renal cell carcinoma. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30216-7] [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: 11/28/2022]
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24
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Srivastava S, Andersen A, Cheng C, Das I. TU-G-BRD-03: IMRT Dosimetry Differences in An Institution with Community and Academic Model. Med Phys 2015. [DOI: 10.1118/1.4925738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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25
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Ørnbjerg L, Østergaard M, Jensen T, Hyldstrup L, Bach-Mortensen P, Bøyesen P, Thormann A, Tarp U, Lindegaard H, Schlemmer A, Graudal N, Andersen A, Espesen J, Kollerup G, Glintborg B, Madsen O, Jensen D, Hetland M. SAT0079 Tumour Necrosis Factor Alpha Inhibitor Treatment Normalises Hand Bone Loss in a Minority of Rheumatoid Arthritis Patients Treated in Clinical Practice. Results from the Copenhagen Osteoarthritis Study and the Danbio Registry. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1789] [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]
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26
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Srivastava S, Andersen A, Lulu B, Cheng C, Das I. SU-E-T-366: Estimation of Whole Body Dose From Cranial Irradiation From C and Perfexion Series Gamma Knife Units. Med Phys 2015. [DOI: 10.1118/1.4924727] [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: 11/07/2022] Open
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27
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Das I, Andersen A, Coutinho L. SU-E-T-577: Obliquity Factor and Surface Dose in Proton Beam Therapy. Med Phys 2015. [DOI: 10.1118/1.4924939] [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: 11/07/2022] Open
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28
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Andersen A, Coutinho L, Das I. SU-D-304-03: Small Field Proton Dosimetry Using MicroDiamond and Gafchromic Film. Med Phys 2015. [DOI: 10.1118/1.4923862] [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: 11/07/2022] Open
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29
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Gismervik K, Aspholm M, Rørvik LM, Bruheim T, Andersen A, Skaar I. Invading slugs (Arion vulgaris) can be vectors for Listeria monocytogenes. J Appl Microbiol 2015; 118:809-16. [PMID: 25580873 PMCID: PMC4406148 DOI: 10.1111/jam.12750] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 12/04/2014] [Accepted: 01/05/2015] [Indexed: 11/27/2022]
Abstract
AIMS Listeriosis is a frequent silage-associated disease in ruminants. The slugs Arion vulgaris are invaders in gardens, vegetable crops and meadows for silage production. Field and laboratory studies were conducted to clarify whether slugs could host Listeria monocytogenes and thereby constitute a threat to animal feed safety. METHODS AND RESULTS Selective culture of L. monocytogenes from 79 pooled slug samples (710 slugs) resulted in 43% positive, 16% with mean L. monocytogenes values of 405 CFU g(-1) slug tissues. Of 62 individual slugs cultured, 11% also tested positive from surface/mucus. Multilocus sequence typing analysis of 36 isolates from different slug pools identified 20 sequence types belonging to L. monocytogenes lineages I and II. Slugs fed ≅4·0 × 10(5) CFUL. monocytogenes, excreted viable L. monocytogenes in faeces for up to 22 days. Excretion of L. monocytogenes decreased with time, although there were indications of a short enrichment period during the first 24 h. CONCLUSIONS Arion vulgaris may act as a vector for L. monocytogenes. SIGNIFICANCE AND IMPACT OF THE STUDY Highly slug-contaminated grass silage may pose a potential threat to animal feed safety.
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Affiliation(s)
- K Gismervik
- Norwegian Veterinary Institute, Trondheim/Oslo, Norway
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Gobina I, Villberg J, Villerusa A, Välimaa R, Tynjälä J, Ottova-Jordan V, Ravens-Sieberer U, Levin K, Cavallo F, Borraccino A, Sigmund E, Andersen A, Holstein BE. Self-reported recurrent pain and medicine use behaviours among 15-year olds: results from the international study. Eur J Pain 2014; 19:77-84. [PMID: 24807819 DOI: 10.1002/ejp.524] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND There is considerable variation in adolescent pain prevalence across epidemiological studies, with limited information on pain-related behaviours among adolescents, including medicine use. The aims of this study were (1) to examine the prevalence of recurrent pain among 15-year-old adolescents internationally; (2) to investigate the association between recurrent pain and medicine use behaviours among boys and girls; and (3) to evaluate the consistency of these associations across countries. METHODS The World Health Organization (WHO) collaborative international Health Behaviour in School-aged Children 2009/2010 study collects data about self-reported aches and medicine use from 36,762 15-year-old adolescents from 22 countries/regions in Europe and the United States. Multi-level multivariate logistic regression, stratified by gender, was used to analyse the association between recurrent pain and medicine use for headache, stomachache, nervousness and difficulties in getting to sleep. RESULTS More than 30% of adolescents reported recurrent headache, almost 30% recurrent backache and approximately 20% recurrent stomachache. Although pain prevalence and medicine use for aches were much higher for girls, the association between pain and medicine use was similarly strong for both genders. Adolescents with recurrent pain are more likely to use medicines also for non-corresponding pain, nervousness and difficulties in getting to sleep. The association between recurrent pain and medicine use was consistent across countries despite large-country differences in the prevalence of recurrent pain and medicine use. CONCLUSIONS Recurrent pain in adolescence is common cross-nationally. Adolescents with recurrent pain are more likely to use medicine in general. Recurrent pain and medicine use should be addressed in adolescent health policies.
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Affiliation(s)
- I Gobina
- Department of Public Health and Epidemiology, Riga Stradins University, Latvia
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31
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Fan XT, Zhao F, Ai Y, Andersen A, Hardy P, Ling F, Gerhardt GA, Zhang Z, Quintero JE. Cortical glutamate levels decrease in a non-human primate model of dopamine deficiency. Brain Res 2014; 1552:34-40. [PMID: 24398457 DOI: 10.1016/j.brainres.2013.12.035] [Citation(s) in RCA: 14] [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] [Received: 04/06/2013] [Revised: 12/19/2013] [Accepted: 12/29/2013] [Indexed: 11/28/2022]
Abstract
While Parkinson's disease is the result of dopaminergic dysfunction of the nigrostriatal system, the clinical manifestations of Parkinson's disease are brought about by alterations in multiple neural components, including cortical areas. We examined how 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) administration affected extracellular cortical glutamate levels by comparing glutamate levels in normal and MPTP-lesioned nonhuman primates (Macaca mulatta). Extracellular glutamate levels were measured using glutamate microelectrode biosensors. Unilateral MPTP-administration rendered the animals with hemiparkinsonian symptoms, including dopaminergic deficiencies in the substantia nigra and the premotor and motor cortices, and with statistically significant decreases in basal glutamate levels in the primary motor cortex on the side ipsilateral to the MPTP-lesion. These results suggest that the functional changes of the glutamatergic system, especially in the motor cortex, in models of Parkinson's disease could provide important insights into the mechanisms of this disease.
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Affiliation(s)
- X T Fan
- Department of Neurosurgery, Xuan Wu Hospital, Capital Medical University, Beijing 100053, PR China.,Department of Anatomy and Neurobiology, University of Kentucky Chandler Medical Center, Lexington, KY 40536 0098 USA
| | - F Zhao
- Department of Anatomy and Neurobiology, University of Kentucky Chandler Medical Center, Lexington, KY 40536 0098 USA.,Department of Physiology, Key Laboratory for Neurodegenerative Disorders of the Ministry Education, Capital Medical University, Beijing 100069 China
| | - Y Ai
- Department of Anatomy and Neurobiology, University of Kentucky Chandler Medical Center, Lexington, KY 40536 0098 USA
| | - A Andersen
- Department of Anatomy and Neurobiology, University of Kentucky Chandler Medical Center, Lexington, KY 40536 0098 USA.,Magnetic Resonance Imaging and Spectroscopy Center, University of Kentucky Chandler Medical Center, Lexington, KY 40536-0098 USA
| | - P Hardy
- Department of Anatomy and Neurobiology, University of Kentucky Chandler Medical Center, Lexington, KY 40536 0098 USA.,Magnetic Resonance Imaging and Spectroscopy Center, University of Kentucky Chandler Medical Center, Lexington, KY 40536-0098 USA
| | - F Ling
- Department of Neurosurgery, Xuan Wu Hospital, Capital Medical University, Beijing 100053, PR China
| | - G A Gerhardt
- Department of Anatomy and Neurobiology, University of Kentucky Chandler Medical Center, Lexington, KY 40536 0098 USA.,Center for Microelectrode Technology, University of Kentucky Chandler Medical Center, Lexington, KY 40536-0098 USA
| | - Z Zhang
- Department of Anatomy and Neurobiology, University of Kentucky Chandler Medical Center, Lexington, KY 40536 0098 USA
| | - J E Quintero
- Department of Anatomy and Neurobiology, University of Kentucky Chandler Medical Center, Lexington, KY 40536 0098 USA.,Center for Microelectrode Technology, University of Kentucky Chandler Medical Center, Lexington, KY 40536-0098 USA
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Abstract
Self-healing hydrogels are obtained in a one-pot reaction between tannic acid, trivalent metal ions and polyallylamine. At high concentrations, meter-long threads could be drawn from low pH solutions.
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Affiliation(s)
- M. Krogsgaard
- Department of Chemistry and iNANO
- DK-8000 Aarhus, Denmark
| | - A. Andersen
- Department of Chemistry and iNANO
- DK-8000 Aarhus, Denmark
| | - H. Birkedal
- Department of Chemistry and iNANO
- DK-8000 Aarhus, Denmark
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Andersen S, Andersen A, Schultz JG, Ringgaard S, Kristiansen SB, Nielsen-Kudsk JE, Nielsen JM. An in vivo rat model for evaluation of cardiac electrophysiological properties in the hypertrophic and failing right heart. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Rasmussen J, Andersen A, Fisker AB, Ravn H, Sodemann M, Rodrigues A, Benn CS, Aaby P. Mid-upper-arm-circumference and mid-upper-arm circumference z-score: the best predictor of mortality? Eur J Clin Nutr 2012; 66:998-1003. [DOI: 10.1038/ejcn.2012.95] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gomes VF, Wejse C, Oliveira I, Andersen A, Vieira FJ, Carlos LJ, Vieira CS, Aaby P, Gustafson P. Adherence to isoniazid preventive therapy in children exposed to tuberculosis: a prospective study from Guinea-Bissau. Int J Tuberc Lung Dis 2012; 15:1637-43. [PMID: 22118171 DOI: 10.5588/ijtld.10.0558] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVE To assess adherence to isoniazid preventive therapy (IPT) in children exposed to adult pulmonary tuberculosis (TB) at home. METHODS Children were enrolled on IPT if they were aged ≤ 5 years or 5-15 years and presented a tuberculin skin test induration of ≥ 10 mm. Children were included from the demographic surveillance system of the Bandim Health Project in Bissau, Guinea-Bissau. The main outcome measures were adherence, completion rates and side effects during 9 months of IPT. The main outcome was 6 consecutive months of at least 80% adherence. RESULTS A total of 2631 children were identified as contacts of adult TB cases. Among the children identified, 1895 (72%) were evaluated for eligibility for IPT, and 820 were enrolled in the study: 609 were aged ≤ 5 years and 211 aged 5-15 years. A total of 79% of the prescribed doses were taken, with 65% of the children taking > 80% of their doses. In all, 51% completed more than 6 consecutive months of IPT. CONCLUSION Overall adherence to IPT was better than previously reported from TB-endemic areas, with 76% of the children completing at least 6 months of treatment, with more than 80% adherence.
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Affiliation(s)
- V F Gomes
- Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau.
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Zhang Z, Andersen A, Hardy P, Ai Y, Grondin R, Gash D, Gerhardt G. 2.150 A POSSIBLE NEW BIOMARKER FOR PARKINSON'S DISEASE: PHARMACOLOGICAL MRI (PHMRI) TO DISCRIMINATE ANIMALS WITH MPTP-VERSUS AGE-RELATED PARKINSONISM IN RHESUS MONKEYS. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70522-3] [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: 10/14/2022]
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Hansen M, Ormberg I, Jahr M, Loe, Andersen A, Rekstad B, Wist E, Reitan J. 1213 poster DEEP INSPIRATION BREATH HOLD REDUCES CARDIAC DOSE IN IRRADIATION OF LEFT SIDED BREAST CANCER. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71335-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hansen BW, Jakobsen HH, Andersen A, Almeda R, Pedersen TM, Christensen AM, Nilsson B. Swimming behavior and prey retention of the polychaete larvae Polydora ciliata (Johnston). J Exp Biol 2010; 213:3237-46. [DOI: 10.1242/jeb.038810] [Citation(s) in RCA: 14] [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: 11/20/2022]
Abstract
SUMMARY
The behavior of the ubiquitous estuarine planktotrophic spionid polychaete larvae Polydora ciliata was studied. We describe ontogenetic changes in morphology, swimming speed and feeding rates and have developed a simple swimming model using low Reynolds number hydrodynamics. In the model we assumed that the ciliary swimming apparatus is primarily composed of the prototroch and secondarily by the telotroch. The model predicted swimming speeds and feeding rates that corresponded well with the measured speeds and rates. Applying empirical data to the model, we were able to explain the profound decrease in specific feeding rates and the observed increase in the difference between upward and downward swimming speeds with larval size. We estimated a critical larval length above which the buoyancy-corrected weight of the larva exceeds the propulsion force generated by the ciliary swimming apparatus and thus forces the larva to the bottom. This modeled critical larval length corresponded to approximately 1 mm, at which, according to the literature, competence for metamorphosis and no more length increase is observed. These findings may have general implications for all planktivorous polychaete larvae that feed without trailing threads. We observed bell shaped particle retention spectra with a minimum prey size of approximately 4 μm equivalent spherical diameter, and we found that an ontogenetic increase in maximum prey size add to a reduction in intra-specific food competition in the various larval stages. In a grazing experiment using natural seawater, ciliates were cleared approximately 50% more efficiently than similar sized dinoflagellates. The prey sizes retainable for P. ciliata larvae covers the microplankton fraction and includes non-motile as well as motile prey items, which is why the larvae are trophically positioned among the copepods and dinoflagellates. Not only do larval morphology and behavior govern larval feeding, prey behavior also influences the feeding efficiency of Polydora ciliata.
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Affiliation(s)
- B. W. Hansen
- Roskilde University, Department of Environmental, Social and Spatial Change, P O Box 260, DK-4000 Roskilde, Denmark
| | - H. H. Jakobsen
- National Institute of Aquatic Resources, Charlottenlund Slot, Jægersborg Allé 1, DK-2920 Charlottenlund, Denmark
| | - A. Andersen
- Department of Physics and Center for Fluid Dynamics, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - R. Almeda
- Institut de Ciències del Mar, CSIC P. Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain
| | - T. M. Pedersen
- Roskilde University, Department of Environmental, Social and Spatial Change, P O Box 260, DK-4000 Roskilde, Denmark
| | - A. M. Christensen
- Roskilde University, Department of Environmental, Social and Spatial Change, P O Box 260, DK-4000 Roskilde, Denmark
| | - B. Nilsson
- Roskilde University, Department of Environmental, Social and Spatial Change, P O Box 260, DK-4000 Roskilde, Denmark
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Reine PA, Kongsgaard UE, Andersen A, Thøgersen AK, Olsen H. Infusions of albumin increase free fraction of naproxen in healthy volunteers: a randomized crossover study. Acta Anaesthesiol Scand 2010; 54:430-4. [PMID: 19878101 DOI: 10.1111/j.1399-6576.2009.02142.x] [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: 11/29/2022]
Abstract
BACKGROUND In vitro and in vivo studies have indicated that stabilizers present in pharmaceutical-grade albumin influence the albumin-binding capacity for highly protein-bound drugs. However, the half-life of the stabilizers and the quantitative effect have been difficult to determine. METHOD A randomized crossover study including six healthy volunteers was performed. The study subjects received 750 mg of oral naproxen 2 h before the study. They were randomized to receive either 100 ml of 20% albumin or 100 ml of Ringer's acetate solution intravenously. Frequent blood samples were obtained. The experiment was repeated 4 weeks later with the alternate solution. The serum samples were analysed to determine the concentrations of albumin, N-acetyl-DL-tryptophan, caprylate, and naproxen. RESULTS The free fraction of naproxen increased significantly after the infusion of albumin (P<0.05). The increase was concurrent with the appearance of N-acetyl-DL-tryptophan and caprylate in serum. The free fraction of naproxen declined rapidly after the albumin infusion was completed. N-acetyl-DL-tryptophan had a half-life of approximately 30 min. The half-life of caprylate was <15 min. CONCLUSION A transfusion of albumin results in an increase in the free fraction of naproxen. The transient increase in free-fraction naproxen decreased together with the detectable levels of the stabilizers N-acetyl-DL-tryptophan and caprylate. N-acetyl-DL-tryptophan and caprylate have a short half-life in serum.
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Affiliation(s)
- P A Reine
- Division of Anaesthesia and Intensive Care, Oslo University Hospital, Oslo, Norway.
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Edvardsen H, Brunsvig PF, Solvang H, Tsalenko A, Andersen A, Syvanen AC, Yakhini Z, Børresen-Dale AL, Olsen H, Aamdal S, Kristensen VN. SNPs in genes coding for ROS metabolism and signalling in association with docetaxel clearance. Pharmacogenomics J 2010; 10:513-23. [PMID: 20157331 DOI: 10.1038/tpj.2010.6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The dose of docetaxel is currently calculated based on body surface area and does not reflect the pharmacokinetic, metabolic potential or genetic background of the patients. The influence of genetic variation on the clearance of docetaxel was analysed in a two-stage analysis. In step one, 583 single-nucleotide polymorphisms (SNPs) in 203 genes were genotyped on samples from 24 patients with locally advanced non-small cell lung cancer. We found that many of the genes harbour several SNPs associated with clearance of docetaxel. Most notably these were four SNPs in EGF, three SNPs in PRDX4 and XPC, and two SNPs in GSTA4, TGFBR2, TNFAIP2, BCL2, DPYD and EGFR. The multiple SNPs per gene suggested the existence of common haplotypes associated with clearance. These were confirmed with detailed haplotype analysis. On the basis of analysis of variance (ANOVA), quantitative mutual information score (QMIS) and Kruskal-Wallis (KW) analysis SNPs significantly associated with clearance of docetaxel were confirmed for GSTA4, PRDX4, TGFBR2 and XPC and additional putative markers were found in CYP2C8, EPHX1, IGF2, IL1R2, MAPK7, NDUFB4, TGFBR3, TPMT (2 SNPs), (P<0.05 or borderline significant for all three methods, 14 SNPs in total). In step two, these 14 SNPs were genotyped in additional 9 samples and the results combined with the genotyping results from the first step. For 7 of the 14 SNPs, the results are still significant/borderline significant by all three methods: ANOVA, QMIS and KW analysis strengthening our hypothesis that they are associated with the clearance of docetaxel.
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Affiliation(s)
- H Edvardsen
- Department of Genetics, Institute of Cancer Research, Oslo University Hospital Radiumhospitalet, Oslo, Norway
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Zhang Z, Andersen A, Hardy P, Ai Y, Gerhardt G, Gash D. P1.102 Pharmacological MRI detecting dysfunctions of the nigrostriatal system and monitoring therapeutic effects in PD. Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70224-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Andersen A, Hansen ÅG, Rydland N, ØYre G. Carabidae and Staphylinidae (Col.) as predators of eggs of the turnip root fly Delia floralis Fallén (Diptera, Anthomyiidae) in cage experiments. ACTA ACUST UNITED AC 2009. [DOI: 10.1111/j.1439-0418.1983.tb02673.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Andersen A, Wolland AM, Russell D, Nyberg-Hansen R. THE CONTRACEPTIVE PILL AND CEREBROVASCULAR DISEASE. Acta Neurol Scand 2009. [DOI: 10.1111/j.1600-0404.1984.tb02495.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Andersen A, Krølner R, Currie C, Dallago L, Due P, Richter M, Orkényi A, Holstein BE. High agreement on family affluence between children's and parents' reports: international study of 11-year-old children. J Epidemiol Community Health 2008; 62:1092-4. [PMID: 18413436 DOI: 10.1136/jech.2007.065169] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To examine the agreement between parents' and children's reports on four items of family affluence: number of cars, own bedroom, number of family holidays and number of computers, and to analyse predictors of disagreement. DESIGN Cross-sectional child-parent validation study of selected items from an internationally standardised questionnaire. SETTING Survey conducted in schools in Denmark, Germany, Hungary, Italy, Poland and Scotland. PARTICIPANTS 972 11-year-old children and their parents responded to the questionnaires. RESULTS The child item response rates were high (above 93%). The per cent agreement was low for holidays spent with family (52.5%), but high for the other three items of family affluence (76.2-88.1%). The kappa coefficients were good or excellent for all items (between 0.41 and 0.74) and the gamma coefficients were strong for all items (between 0.56 and 0.96). Children from single-parent families were more likely to over-report family affluence (OR 2.67; CI 1.83 to 3.89). CONCLUSIONS Young adolescents' self-reports of family affluence are fairly valid across the six countries. This finding suggests that the variables measured can be used in epidemiological studies that aim at ranking children according to socioeconomic position.
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Affiliation(s)
- A Andersen
- Institute of Public Health Science, Department of Social Medicine, University of Copenhagen, Copenhagen, Denmark.
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Reine PA, Kongsgaard UE, Andersen A, Thøgersen AK, Olsen H. Infusion of albumin attenuates changes in serum protein binding of drugs in surgical patients compared with volume replacement with HAES. Acta Anaesthesiol Scand 2008; 52:406-12. [PMID: 18269390 DOI: 10.1111/j.1399-6576.2007.01555.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND In vitro studies have indicated that stabilizers present in pharmaceutical-grade albumin influence albumin-binding capacity for highly protein bound drugs. METHODS A randomized study including 40 surgical patients, treated with either albumin or starch solutions, was performed. Volumes of colloids were given based on clinical indication. Blood samples were obtained. The serum samples were analyzed to determine the concentrations of albumin, tryptophan, N-acetyl-dl-tryptophan, caprylate and alpha-1-acid glycoprotein as well as in vitro drug binding of naproxen, warfarin and digitoxin. RESULTS During surgery, the albumin concentration declined in the Starch group from 26.8 to 15.3 g/l. It remained unchanged in the Albumin group (29.2 g/l). The two groups were analyzed with the pre-operative sample acting as the control. In the starch group, the percent free concentration of the drugs increased significantly (P<0.01): for naproxen from 0.2% to 0.6%, for warfarin from 1.2% to 1.8% and for digitoxin from 6.8% to 11.1%. In the Albumin group, the % free fraction of naproxen doubled from 0.1% to 0.2% (P<0.05), whereas the % free fraction of warfarin decreased from 1.1% to 1.0% (P<0.05). The free fraction of digitoxin remained unchanged. CONCLUSIONS Infusion of albumin during surgery resulted in maintained albumin values and almost maintained binding parameters for the study drugs, although some statistically significant changes were found. The use of starch solutions, however, led to in a reduction in albumin values and a significant reduction in binding parameters.
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Affiliation(s)
- P A Reine
- Department of Anaesthesia, Medical Faculty, University of Oslo, Norway
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Sanchez S, Andersen A, Hourdez S, Lallier F. Tissue-specific expression of different carbonic anhydrases in the chemoautotrophic symbiosis Riftia pachyptila. Comp Biochem Physiol A Mol Integr Physiol 2007. [DOI: 10.1016/j.cbpa.2007.01.490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Andersen A, Hill KE, Stephens P, Thomas DW, Jorgensen B, Krogfelt KA. Bacterial profiling using skin grafting, standard culture and molecular bacteriological methods. J Wound Care 2007; 16:171-5. [PMID: 17444383 DOI: 10.12968/jowc.2007.16.4.27025] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Wound healing can be delayed by the presence of colonising bacteria, and in polymicrobial wounds they may act synergistically to the further detriment of wound healing. In this pilot investigation, biopsy and swab samples were obtained as part of skin-graft operations performed on a chronic venous leg ulcer in order to study the spatial microbial diversity and to compare standard bacteriological and molecular biological techniques. METHOD The wound was sampled before excision, and sampling was undertaken at multiple locations across the wound. Swab samples and biopsies were subjected to culture analysis and 16S rRNA polymerase chain reaction (PCR), and to denaturing gradient gel electrophoresis (DGGE). RESULTS Within the wound samples, DGGE identified the major wound microflora components and established the extent of local differences in bacterial diversity. CONCLUSION This ongoing investigation has verified DGGE as a powerful tool for elucidating the clinical microbiology of a chronic disease state. It also suggests that skin graft operations are a novel way of obtaining multiple samples for in vivo bacteriology and for establishing the spatial distribution of bacteria in the complex micro-environment of chronic wounds.
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Affiliation(s)
- A Andersen
- Department of Bacteriology, Mycology and Parasitology, ABMP, Statens Serum Institut, Copenhagen, Denmark
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Gotlieb WH, Bruchim I, Ben-Baruch G, Davidson B, Zeltser A, Andersen A, Olsen H. Doxorubicin levels in the serum and ascites of patients with ovarian cancer. Eur J Surg Oncol 2007; 33:213-5. [PMID: 17174514 DOI: 10.1016/j.ejso.2006.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 08/28/2006] [Accepted: 11/08/2006] [Indexed: 11/28/2022] Open
Abstract
AIMS To investigate the diffusion and accumulation of doxorubicin metabolites in the ascites of patients with ovarian cancer following intravenous injection, as a model for intraperitoneal accumulation of drugs. METHODS The concentrations of doxorubicin and its metabolites [Doxorubicinol (Dox-ol), 7-deoxydoxorubicinolone (7d-Dox-ol-on) and 7-deoxydoxorubicinone (7d-Dox-on)] were measured using high-performance liquid chromatography in the serum and in the ascites of seven patients with recurrent ovarian carcinoma suffering from symptomatic ascites and treated with intravenous doxorubicin. RESULTS Doxorubicin metabolites accumulated in the peritoneal cavity. The concentrations of the doxorubicin metabolites were initially higher in the serum compared to the ascitic fluid, but following several hours the doxorubicin metabolites became higher in the ascites, and remained detectable in the ascites for up to 168h, long after disappearance from the serum. CONCLUSIONS Doxorubicin metabolites accumulate in the ascites and are cleared more slowly from the peritoneal compartment than from the serum. Accumulation in the peritoneal cavity with prolonged half-life should be considered when administering medication in patients with ascites.
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Affiliation(s)
- W H Gotlieb
- Division of Gynecologic Oncology, Jewish General Hospital, McGill University, 3755 Cote Ste Catherine, Suite A-632, Montreal, QC H3T 1E2, Canada.
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Nilsson C, Asplund A, Schagerlöf H, Melander C, Andersen A, Tjerneld F, Cohen A, Gorton L. Studies of the separation and characterisation of mixtures of starch and cellulose derivatives by use of chromatography and mass spectrometry. Anal Bioanal Chem 2007; 387:2045-55. [PMID: 17252221 DOI: 10.1007/s00216-006-1094-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 10/02/2006] [Revised: 12/04/2006] [Accepted: 12/12/2006] [Indexed: 11/26/2022]
Abstract
In this work a method was developed for characterisation of commercially available polymers consisting of mixtures of substituted cellulose and starch. Selective hydrolysis with specific enzymes was used to achieve separation of the two polymers in the mixture. Enzymes hydrolysing (1-->4)-alpha-D and (1-->6)-alpha-D-glycosidic bonds were used for the starch part and enzymes hydrolysing (1-->4)-beta-D-glycosidic bonds for the cellulose part. The hydrolysed fraction was separated from the unhydrolysed fraction and characterised by use of size-exclusion chromatography (SEC), to confirm that enzyme hydrolysis of the different polymers had occurred. High-performance anion-exchange chromatography (HPAEC) was performed to determine the amount of unmodified glucose units (UGU) in the fractions. Electrospray ionisation mass spectrometry (ESIMS) was used for determination of the substituents. All products were converted to monomers by acid hydrolysis to simplify mass spectral identification of the substituents. The monomers were further subjected to acetylation with acetic acid anhydride to facilitate identification of the substituents. By combining the results from the different analytical techniques a picture of the samples was obtained.
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Affiliation(s)
- C Nilsson
- Department of Analytical Chemistry, Lund University, and Department of Occupational and Environmental Medicine, Institute of Laboratory Medicine, University Hospital, Lund, Sweden.
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Hublet A, Andersen A, Godeau E, Vereecken C, Välimaa R, Tynjälä J, Boyce W, Maes L. Asthma and wheezing symptoms in young people in six Western countries. Rev Epidemiol Sante Publique 2006; 54:305-12. [PMID: 17088695 DOI: 10.1016/s0398-7620(06)76726-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
BACKGROUND Asthma diagnosed in children shows wide geographical variations. Large scale surveys identify children with diagnosed asthma, but neglect the group of youngsters with multiple asthmatic complaints. METHODS A short validated asthma questionnaire was included in six national surveys of the Health Behaviour in School-Aged Children Study. Prevalence rates are presented by country, gender and age. Gender and age differences are analysed using binary and multinomial logistic regressions controlling for age and smoking. RESULTS Large country differences are observed in the prevalence rates of diagnosed asthma (8.6%-20.9% in boys, 6.9%-18.5% in girls) and young people with "asthma-like symptoms" (9.6%-20.2% in boys, 9.2%-23.1% in girls). When controlling for age and smoking, significant gender differences are observed (more diagnosed asthma in boys, more asthmatic symptoms in girls). Age differences were observed in adolescents with "asthma-like symptoms", but not in diagnosed asthma. CONCLUSIONS Using a short asthma questionnaire, large differences in diagnosed asthma and wheezing symptoms are observed between the countries. A considerable group of youngsters with "asthma-like symptoms" is detected in all countries, and may be an unrecognised risk group in health promotion.
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Affiliation(s)
- A Hublet
- Department of Public Health, Ghent University, University Hospital-bloc A-2nd floor, De Pintelaan 185, 9000 Ghent, Belgium.
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