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Kjeldsen T, Skou ST, Dalgas U, Tønning LU, Ingwersen KG, Birch S, Holm PM, Frydendal T, Garval M, Varnum C, Bibby BM, Mechlenburg I. Progressive Resistance Training or Neuromuscular Exercise for Hip Osteoarthritis : A Multicenter Cluster Randomized Controlled Trial. Ann Intern Med 2024. [PMID: 38588540 DOI: 10.7326/m23-3225] [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: 04/10/2024] Open
Abstract
BACKGROUND Exercise is recommended as first-line treatment for patients with hip osteoarthritis (OA). However, randomized controlled trials providing evidence for the optimal exercise type are lacking. OBJECTIVE To investigate whether progressive resistance training (PRT) is superior to neuromuscular exercise (NEMEX) for improving functional performance in patients with hip OA. DESIGN Multicenter, cluster-randomized, controlled, parallel-group, assessor-blinded, superiority trial. (ClinicalTrials.gov: NCT04714047). SETTING Hospitals and physiotherapy clinics. PARTICIPANTS 160 participants with clinically diagnosed hip OA were enrolled from 18 January 2021 to 28 April 2023 and randomly assigned to PRT (n = 82) or NEMEX (n = 78). INTERVENTION Twelve weeks of PRT or NEMEX with 2 supervised 60-minute group sessions each week. The PRT intervention consisted of 5 high-intensity resistance training exercises targeting muscles at the hip and knee joints. The NEMEX intervention included 10 exercises and emphasized sensorimotor control and functional stability. MEASUREMENTS The primary outcome was change in the 30-second chair stand test (30s-CST). Key secondary outcomes were changes in scores on the pain and hip-related quality of life (QoL) subscales of the Hip Disability and Osteoarthritis Outcome Score (HOOS). RESULTS The mean changes from baseline to 12-week follow-up in the 30s-CST were 1.5 (95% CI, 0.9 to 2.1) chair stands with PRT and 1.5 (CI, 0.9 to 2.1) chair stands with NEMEX (difference, 0.0 [CI, -0.8 to 0.8] chair stands). For the HOOS pain subscale, mean changes were 8.6 (CI, 5.3 to 11.8) points with PRT and 9.3 (CI, 5.9 to 12.6) points with NEMEX (difference, -0.7 [CI, -5.3 to 4.0] points). For the HOOS QoL subscale, mean changes were 8.0 (CI, 4.3 to 11.7) points with PRT and 5.7 (CI, 1.9 to 9.5) points with NEMEX (difference, 2.3 [CI, -3.0 to 7.6] points). LIMITATION Participants and physiotherapists were not blinded. CONCLUSION In patients with hip OA, PRT is not superior to NEMEX for improving functional performance, hip pain, or hip-related QoL. PRIMARY FUNDING SOURCE Independent Research Fund Denmark.
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Affiliation(s)
- Troels Kjeldsen
- Department of Orthopedic Surgery, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; and Research and Implementation Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark (T.K.)
| | - Søren T Skou
- The Research and Implementation Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark, and Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark (S.T.S.)
| | - Ulrik Dalgas
- Exercise Biology, Department of Public Health, Aarhus University, Aarhus, Denmark (U.D.)
| | - Lisa U Tønning
- Department of Orthopedic Surgery, Aarhus University Hospital, and Department of Clinical Medicine, Aarhus University, Aarhus, Denmark (L.U.T.)
| | - Kim G Ingwersen
- Department of Physio- and Occupational Therapy, Lillebaelt Hospital - Vejle, University Hospital of Southern Denmark, and Department of Regional Health Research, Faculty of Health Science, University of Southern Denmark, Odense, Denmark (K.G.I.)
| | - Sara Birch
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; Department of Neurology, Physiotherapy and Occupational Therapy, Gødstrup Regional Hospital, Herning, Denmark; and Department of Orthopedic Surgery, Gødstrup Regional Hospital, Herning, Denmark (S.B.)
| | - Pætur M Holm
- The Research and Implementation Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark; Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark; and Faculty of Health Sciences, University of Faroe Islands, Tórshavn, Faroe Islands (P.M.H.)
| | - Thomas Frydendal
- Department of Orthopedic Surgery, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; Department of Physio- and Occupational Therapy, Lillebaelt Hospital - Vejle, University Hospital of Southern Denmark, Odense, Denmark; and Department of Clinical Research, University of Southern Denmark, Odense, Denmark (T.F.)
| | - Mette Garval
- Elective Surgery Centre, Regional Hospital Silkeborg, Silkeborg, Denmark (M.G.)
| | - Claus Varnum
- Department of Regional Health Research, Faculty of Health Science, University of Southern Denmark, Odense, Denmark, and Department of Orthopedic Surgery, Lillebaelt Hospital - Vejle, University Hospital of Southern Denmark, Odense, Denmark (C.V.)
| | - Bo M Bibby
- Department of Biostatistics, Institute of Public Health, Aarhus University, Aarhus, Denmark (B.M.B.)
| | - Inger Mechlenburg
- Department of Orthopedic Surgery, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; and Exercise Biology, Department of Public Health, Aarhus University, Aarhus, Denmark (I.M.)
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Julsgaard M, Wieringa JW, Baunwall SMD, Bibby BM, Driessen GJA, Kievit L, Brodersen JB, Poulsen A, Kjeldsen J, Hansen MM, Tang HQ, Balmer CL, Glerup H, Seidelin JB, Haderslev KV, Svenningsen L, Wildt S, Juel MA, Neumann A, Fuglsang J, Jess T, Haase AM, Hvas CL, Kelsen J, Janneke van der Woude C. Infant Ustekinumab Clearance, Risk of Infection, and Development After Exposure During Pregnancy. Clin Gastroenterol Hepatol 2024:S1542-3565(24)00083-1. [PMID: 38278191 DOI: 10.1016/j.cgh.2024.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/28/2024]
Abstract
BACKGROUND Evidence on ustekinumab safety in pregnancy is gradually expanding, but its clearance in the postnatal period is unknown. The aim of this study was to investigate ustekinumab concentrations in umbilical cord blood and rates of clearance after birth, as well as how these correlate with maternal drug concentrations, risk of infection, and developmental milestones during the first year of life. METHODS Pregnant women with inflammatory bowel disease were prospectively recruited from 19 hospitals in Denmark and the Netherlands between 2018 and 2022. Infant infections leading to hospitalization/antibiotics and developmental milestones were assessed. Serum ustekinumab concentrations were measured at delivery and specific time points. Nonlinear regression analysis was applied to estimate clearance. RESULTS In 78 live-born infants from 76 pregnancies, we observed a low risk of adverse pregnancy outcomes and normal developmental milestones. At birth, the median infant-mother ustekinumab ratio was 2.18 (95% confidence interval, 1.69-2.81). Mean time to infant clearance was 6.7 months (95% confidence interval, 6.1-7.3 months). One in 4 infants at 6 months had an extremely low median concentration of 0.015 μg/mL (range 0.005-0.12 μg/mL). No variation in median ustekinumab concentration was noted between infants with (2.8 [range 0.4-6.9] μg/mL) and without (3.1 [range 0.7-11.0] μg/mL) infections during the first year of life (P = .41). CONCLUSIONS No adverse signals after intrauterine exposure to ustekinumab were observed with respect to pregnancy outcome, infections, or developmental milestones during the first year of life. Infant ustekinumab concentration was not associated with risk of infections. With the ustekinumab clearance profile, live attenuated vaccination from 6 months of age seems of low risk.
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Affiliation(s)
- Mette Julsgaard
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark; Center for Molecular Prediction of Inflammatory Bowel Disease, Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark.
| | - Jantien W Wieringa
- Department of Pediatrics, Haaglanden Medical Center, The Hague, the Netherlands; Division of Paediatric Infectious Diseases and Immunology, Department of Pediatrics, Sophia Children's Hospital, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Simon M D Baunwall
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Bo M Bibby
- Department of Biostatistics, University of Aarhus, Aarhus, Denmark
| | - Gertjan J A Driessen
- Department of Pediatrics, MosaKids Children's Hospital, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Linda Kievit
- Department of Medicine, Gjødstrup Hospital, Gjødstrup, Denmark
| | - Jacob B Brodersen
- Department of Gastroenterology, Esbjerg Hospital, University Hospital of Southern Denmark, Esbjerg, Denmark; Department of Regional Health Science, University of Southern Denmark, Esbjerg, Denmark
| | - Anja Poulsen
- Digestive Disease Center, Bispebjerg University Hospital, Copenhagen, Denmark
| | - Jens Kjeldsen
- Department of Medical Gastrointestinal Diseases, Odense University Hospital, Odense, Denmark
| | - Mette M Hansen
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Hai Q Tang
- Department of Obstetrics and Gynaecology, Aarhus University Hospital, Denmark
| | - Christina L Balmer
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Henning Glerup
- Diagnostic Centre, University Research Clinic for Innovative Patient Pathways, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - Jakob B Seidelin
- Department of Gastroenterology and Hepatology, Herlev Hospital, University of Copenhagen, Herlev, Denmark
| | - Kent V Haderslev
- Department of Gastroenterology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Lise Svenningsen
- Department of Internal Medicine, Horsens Regional Hospital, Horsens, Denmark
| | - Signe Wildt
- Unit of Medical and Surgical Gastroenterology, Hvidovre University Hospital, Hvidovre, Denmark
| | - Mie A Juel
- Department of Gastroenterology, Esbjerg Hospital, University Hospital of Southern Denmark, Esbjerg, Denmark; Department of Internal Medicine, Vejle Hospital, Vejle, Denmark
| | - Anders Neumann
- Department of Internal Medicine, Viborg Regional Hospital, Viborg, Denmark
| | - Jens Fuglsang
- Department of Obstetrics and Gynaecology, Aarhus University Hospital, Denmark
| | - Tine Jess
- Center for Molecular Prediction of Inflammatory Bowel Disease, Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark; Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Anne-Mette Haase
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Christian L Hvas
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark; Institute of Clinical Medicine, Health, Aarhus University, Aarhus, Denmark
| | - Jens Kelsen
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark; Institute of Clinical Medicine, Health, Aarhus University, Aarhus, Denmark
| | - C Janneke van der Woude
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
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Christensen M, Laugesen ELG, Bibby BM, Hansen KW. The glycaemic roller coaster phenomenon in type 1 diabetes. Diabetes Obes Metab 2024; 26:389-391. [PMID: 37770974 DOI: 10.1111/dom.15297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/30/2023]
Affiliation(s)
- Mia Christensen
- Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - Esben Lerkevang Grove Laugesen
- Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark
- Steno Diabetes Center, Aarhus University hospital, Aarhus N, Denmark
| | - Bo M Bibby
- Section for Biostatistics, Department of Public Health, Aarhus University, Aarhus N, Denmark
| | - Klavs W Hansen
- Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus C, Denmark
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Hansen KW, Bibby BM. Rebound Hypoglycemia and Hyperglycemia in Type 1 Diabetes. J Diabetes Sci Technol 2023:19322968231168379. [PMID: 37138541 DOI: 10.1177/19322968231168379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
AIMS The aim was to investigate rebound hypoglycemic and hyperglycemic events, and describe their relation to other glycemic metrics. METHODS Data from intermittently scanned continuous glucose monitoring were downloaded for 90 days for 159 persons with type 1 diabetes. A hypoglycemic event was defined as glucose <3.9 mmol/l for at least two 15-minute periods. Rebound hypoglycemia (Rhypo) was a hypoglycemic event preceded by glucose >10.0 mmol/l within 120 minutes and rebound hyperglycemia (Rhyper) was hypoglycemia followed by glucose >10.0 mmol/l within 120 minutes. RESULTS A total of 10 977 hypoglycemic events were identified of which 3232 (29%) were Rhypo and 3653 (33%) were Rhyper, corresponding to a median frequency of 10.1, 2.5, and 3.0 events per person/14 days. For 1267 (12%) of the cases, Rhypo and Rhyper coexisted. The mean peak glucose was 13.0 ± 1.6 mmol/l before Rhypo; 12.8 ± 1.1 mmol/l in Rhyper. The frequency of Rhyper was significantly (P < .001) correlated with Rhypo (Spearman's rho 0.84), glucose coefficient of variation (0.78), and time below range (0.69) but not with time above range (0.12, P = .13). CONCLUSIONS The strong correlation between Rhyper and Rhypo suggests an individual behavioral characteristic toward intensive correction of glucose excursions.
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Affiliation(s)
- Klavs W Hansen
- University Research Clinic for Innovative Patient Pathways, Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
| | - Bo M Bibby
- Biostatistical Advisory Service, Faculty of Health, Aarhus University, Aarhus N, Denmark
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Abstract
BACKGROUND The relation between the frequency of intermittently scanned continuous glucose monitoring (isCGM) and diurnal variation of time in range (TIR) and time below range (TBR) is unknown. METHOD A total of 163 persons with type 1 diabetes who used isCGM had glucose data for 60 days downloaded. Mean TIR and median TBR were calculated for 15-minute periods and presented for daytime and nighttime. The values for tertiles of scanning frequency were compared. RESULTS The 1st tertile (n = 53) of the population scanned <10 times; the 2nd tertile (n = 56) 10-13 times, and the 3rd tertile (n = 54) >13 per 24 hours. TIR (%, mean ± (SD)) increased significantly from the 1st to the 3rd scan tertile both during the day (43.8 ± 14.8, 52.0 ± 12.3, 62.1 ± 12.8) and the night (44.5 ± 17.3, 52.3 ± 18.5, 64.0 ± 13.9; P < .0001). In contrast, TBR (median, (IQR)) was not significantly associated with scan tertiles during daytime (3.5% (1.1-7.8), 4.4% (1.8-6.1), 3.5% (2.1-6.1); P = .85) or nighttime (3.8% (1.4-13.7), 5.0% (1.6-9.6), 5.7% (3.6-10.9); P = .24). In a multiple regression model, a 50% increase in 24-hour scanning frequency was associated with a 7.8 percentage point increase in TIR (95% CI, 5.6-10.0). CONCLUSIONS Increased scanning frequency was associated with a higher TIR both during daytime and nighttime with no change in TBR.
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Affiliation(s)
- Klavs W. Hansen
- Diagnostic Centre, Silkeborg Regional
Hospital, University Research Clinic for Innovative Patient Pathways, Silkeborg,
Denmark
- Klavs W. Hansen, MD, DMSCI, Diagnostic
Centre, Silkeborg Regional Hospital, University Research Clinic for Innovative
Patient Pathways, Falkevej 1-3, Silkeborg, 8600, Denmark.
| | - Bo M. Bibby
- Biostatistical Advisory Service,
Faculty of Health, Aarhus University, Aarhus C, Denmark
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Jacobsen SA, Bibby BM, Frostholm L, Petersen MW, Ørnbøl E, Schovsbo SU, Dantoft TM, Carstensen TBW. Development and Validation of the Weighted Index for Childhood Adverse Conditions (WICAC). Int J Environ Res Public Health 2022; 19:ijerph192013251. [PMID: 36293829 PMCID: PMC9602749 DOI: 10.3390/ijerph192013251] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/30/2022] [Accepted: 10/09/2022] [Indexed: 05/17/2023]
Abstract
BACKGROUND Adverse experiences in childhood are a major public health concern, promoting social inequality in health through biopsychosocial mechanisms. So far, no known measures comprehend the complexity and variations of severity of adverse events. This study aims to develop and validate a new index: the Weighted Index for Childhood Adverse Conditions (WICAC). METHODS The population consists of 7493 randomly invited men and women aged 18-72 years. Data were collected in 2012-2015 as part of the Danish Study of Functional Disorders (DanFunD). Content and construct validation of the WICAC was performed with the hypothesis testing of multiple biopsychosocial outcomes: cardiovascular disease, cancer, poor health, back pain, BMI, obesity, anxiety, depression, low vitality, subjective social status, lower education, smoking, and alcohol consumption. Data were analysed with binominal and linear regression models with risk ratios (RR) and mean differences (MD). RESULTS Content validation is fitting for WICAC. The strongest associations observed were for most severe adversity: Poor Health RR = 2.16 (1.19-2.91), Anxiety RR = 3.32 (2.32-4.74), Heavy Drinking RR = 4.09 (1.85-9.04), and Subjective Social Status MD = -0.481 (-0.721-(-0.241)). Similar results were found for the remaining outcomes. Discriminative validation was undecided. CONCLUSIONS WICAC is an adequate instrument for measuring cumulative adverse life events in childhood and adolescence for research purposes.
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Affiliation(s)
- Sofie A. Jacobsen
- Research Clinic for Functional Disorders and Psychosomatics, Aarhus University Hospital, Palle Juul-Jensen Boulevard 11, 8200 Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensen Boulevard 11, 8200 Aarhus, Denmark
- Correspondence:
| | - Bo M. Bibby
- Department of Public Health, Biostatistics, Aarhus University, Bartholins Allé 2, 8000 Aarhus, Denmark
| | - Lisbeth Frostholm
- Research Clinic for Functional Disorders and Psychosomatics, Aarhus University Hospital, Palle Juul-Jensen Boulevard 11, 8200 Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensen Boulevard 11, 8200 Aarhus, Denmark
| | - Marie W. Petersen
- Research Clinic for Functional Disorders and Psychosomatics, Aarhus University Hospital, Palle Juul-Jensen Boulevard 11, 8200 Aarhus, Denmark
| | - Eva Ørnbøl
- Research Clinic for Functional Disorders and Psychosomatics, Aarhus University Hospital, Palle Juul-Jensen Boulevard 11, 8200 Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensen Boulevard 11, 8200 Aarhus, Denmark
| | - Signe U. Schovsbo
- Center for Clinical Research and Disease Prevention, Bispebjerg and Frederiksberg Hospital, The Capital Region, 2400 Copenhagen, Denmark
| | - Thomas M. Dantoft
- Center for Clinical Research and Disease Prevention, Bispebjerg and Frederiksberg Hospital, The Capital Region, 2400 Copenhagen, Denmark
| | - Tina B. W. Carstensen
- Research Clinic for Functional Disorders and Psychosomatics, Aarhus University Hospital, Palle Juul-Jensen Boulevard 11, 8200 Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensen Boulevard 11, 8200 Aarhus, Denmark
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Kjeldsen T, Dalgas U, Skou ST, van Tulder M, Bibby BM, Mechlenburg I. Progressive resistance training compared to neuromuscular exercise in patients with hip osteoarthritis and the additive effect of exercise booster sessions: protocol for a multicentre cluster randomised controlled trial (The Hip Booster Trial). BMJ Open 2022; 12:e061053. [PMID: 36109033 PMCID: PMC9478855 DOI: 10.1136/bmjopen-2022-061053] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION The primary aim of this randomised controlled trial is to investigate the effectiveness of 3 months of progressive resistance training (PRT) compared to neuromuscular exercise (NEMEX) on functional performance in patients with hip osteoarthritis (OA). Secondary aims are to investigate the effectiveness of exercise booster sessions (EBS) in prolonging the effects of the initial exercise interventions as well as to investigate the cost-effectiveness of PRT, NEMEX and EBS at 12-month follow-up. METHODS AND ANALYSIS This multicentre cluster randomised controlled trial will be conducted at hospitals and physiotherapy clinics across Denmark. A total of 160 participants with clinically diagnosed hip OA will be recruited. Participants will be cluster randomised to a 3-month intervention of either PRT or NEMEX and to receive EBS or not, resulting in four treatment arms.The primary outcome is change in functional performance, measured by the 30 s chair stand test at 3 months for the primary comparison and at 12 months for the EBS comparisons. Secondary outcomes include changes in 40 m fast-paced walk test, 9-step timed stair climb test, leg extensor muscle power and maximal strength, Hip disability and Osteoarthritis Outcome Score subscales, EuroQol Group 5-dimension, global perceived effect, physical activity and pain. Outcomes are measured at baseline, after the initial 3 months of intervention, and at 6-month, 9-month and 12-month follow-up. An intention-to-treat approach will be used for analysing changes in the primary and secondary outcome measures. ETHICS AND DISSEMINATION The trial has been approved by the Central Denmark Region Committee on Biomedical Research Ethics (Journal No 1-10-72-267-20) and registered at the Danish Data Protection Agency (Journal No 1-16-02-11-21). Results will be published in international peer-reviewed scientific journals. TRIAL REGISTRATION NUMBER NCT04714047.
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Affiliation(s)
- Troels Kjeldsen
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- The Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark
| | - Ulrik Dalgas
- Exercise Biology, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Søren T Skou
- The Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark
- Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - Maurits van Tulder
- Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Department of Physiotherapy & Occupational Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Bo M Bibby
- Department of Biostatistics, Institute of Public Health, Aarhus University, Aarhus, Denmark
| | - Inger Mechlenburg
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Orthopedic Surgery, Aarhus University Hospital, Aarhus, Denmark
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Julsgaard M, Baumgart DC, Baunwall SMD, Hansen MM, Grosen A, Bibby BM, Uldbjerg N, Kjeldsen J, Sørensen HG, Larsen L, Wildt S, Weimers P, Haderslev KV, Vind I, Svenningsen L, Brynskov J, Lyhne S, Vestergaard T, Hvas CL, Kelsen J. Vedolizumab clearance in neonates, susceptibility to infections and developmental milestones: a prospective multicentre population-based cohort study. Aliment Pharmacol Ther 2021; 54:1320-1329. [PMID: 34472644 DOI: 10.1111/apt.16593] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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] [Received: 05/04/2021] [Revised: 06/21/2021] [Accepted: 08/20/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Little is known about the consequences of intrauterine exposure to, and the post-natal clearance of, vedolizumab. AIMS To investigate the levels of vedolizumab in umbilical cord blood of newborns and rates of clearance after birth, as well as how these correlated with maternal drug levels, risk of infection and developmental milestones during the first year of life METHODS: Vedolizumab-treated pregnant women with inflammatory bowel disease were prospectively recruited from 12 hospitals in Denmark and Canada in 2016-2020. Demographics were collected from medical records. Infant developmental milestones were evaluated by the Ages and Stages Questionnaire (ASQ-3). Vedolizumab levels were measured at delivery and, in infants, every third month until clearance. Non-linear regression analysis was applied to estimate clearance. RESULTS In 50 vedolizumab-exposed pregnancies, we observed 43 (86%) live births, seven (14%) miscarriages, no congenital malformations and low risk of adverse pregnancy outcomes. Median infant:mother vedolizumab ratio at birth was 0.44 (95% confidence interval [CI], 0.32-0.56). The mean time to vedolizumab clearance in infants was 3.8 months (95% CI, 3.1-4.4). No infant had detectable levels of vedolizumab at 6 months of age. Developmental milestones at 12 months were normal or above average. Neither vedolizumab exposure in the third trimester (RR 0.54, 95% CI, 0.28-1.03) nor combination therapy with thiopurines (RR 1.29, 95% CI, 0.60-2.77) seemed to increase the risk of infections in the offspring. CONCLUSIONS Neonatal vedolizumab clearance following intrauterine exposure is rapid. Infant vedolizumab levels did not correlate with the risk of infections during the first year of life. Continuation of vedolizumab throughout pregnancy is safe.
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Ørby PV, Bønløkke JH, Bibby BM, Ravn P, Hertel O, Sigsgaard T, Schlünssen V. The Effect of Seasonal Priming on Specific Inhalation Challenges With Birch and Grass Allergen Among Persons With Allergic Rhinitis. Front Allergy 2021; 2:737799. [PMID: 35387055 PMCID: PMC8974820 DOI: 10.3389/falgy.2021.737799] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/03/2021] [Indexed: 11/13/2022] Open
Abstract
Objectives: Allergic diseases are prevalent in the working population, and work-related airborne pollen exposure might be substantial, especially among outdoor workers, resulting in work-exacerbated effects. Seasonal exposure to pollen may induce a priming effect on the allergic bronchial response resulting in exaggerated effects at the end of the natural pollen season. This was previously observed among people with asthma but may also be of importance for persons with allergic rhinitis. In this study, we examined the effect of seasonal priming on bronchial responsiveness among young adults with allergic rhinitis and no or mild asthma. In addition, we explored the association between the baseline characteristics of participants and the severity of bronchoconstriction. Finally, we evaluated the application of a novel non-linear regression model to the log-dose-response curves. Material and methods: In a crossover design, 36 participants underwent specific inhalation challenges (SICs) with either grass or birch allergen outside and at the end of the pollen season. The differences in bronchial response were evaluated by comparing the dose-response profiles and PD20 estimates derived by applying a non-linear regression model. Results: The results showed that 12 of the 19 grass pollen-exposed participants had a lower PD20 at the end of the season compared with the outside season. For birch, this was true for nine out of the 17 participants. However, no statistically significant effects of the seasonal pollen exposure were found on neither the shape nor the magnitude of the modeled dose-response curves for either birch allergen, p = 0.77, or grass allergen, p = 0.45. The model depicted a good fit for the data. Among the baseline characteristics, only the size of the skin prick test for grass allergen was associated with PD20. Conclusion: This study does not support a priming effect of pollen exposure on the bronchial response from the natural seasonal exposure levels of grass or birch allergens among young adults with allergic rhinitis.
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Affiliation(s)
- Pia V. Ørby
- Department of Public Health, Environment, Work and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
- Department of Environmental Science, Aarhus University, Roskilde, Denmark
- Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, Roskilde, Denmark
- *Correspondence: Pia V. Ørby
| | - Jakob H. Bønløkke
- Department of Public Health, Environment, Work and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
- Department of Occupational and Environmental Medicine, Danish Ramazzini Centre, Aalborg University Hospital, Aalborg, Denmark
| | - Bo M. Bibby
- Department of Public Health, Environment, Work and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
| | - Peter Ravn
- Department of Public Health, Environment, Work and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
| | - Ole Hertel
- Department of Environmental Science, Aarhus University, Roskilde, Denmark
- Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, Roskilde, Denmark
- Department of Ecoscience, Aarhus University, Roskilde, Denmark
| | - Torben Sigsgaard
- Department of Public Health, Environment, Work and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
- Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, Roskilde, Denmark
| | - Vivi Schlünssen
- Department of Public Health, Environment, Work and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
- National Research Centre for the Working Environment, Copenhagen, Denmark
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10
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Kural MA, Duez L, Sejer Hansen V, Larsson PG, Rampp S, Schulz R, Tankisi H, Wennberg R, Bibby BM, Scherg M, Beniczky S. Criteria for defining interictal epileptiform discharges in EEG: A clinical validation study. Neurology 2020; 94:e2139-e2147. [PMID: 32321764 PMCID: PMC7526669 DOI: 10.1212/wnl.0000000000009439] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 12/10/2019] [Indexed: 12/04/2022] Open
Abstract
Objective To define and validate criteria for accurate identification of EEG interictal epileptiform discharges (IEDs) using (1) the 6 sensor space criteria proposed by the International Federation of Clinical Neurophysiology (IFCN) and (2) a novel source space method. Criteria yielding high specificity are needed because EEG over-reading is a common cause of epilepsy misdiagnosis. Methods Seven raters reviewed EEG sharp transients from 100 patients with and without epilepsy (diagnosed definitively by video-EEG recording of habitual events). Raters reviewed the transients, randomized, and classified them as epileptiform or nonepileptiform in 3 separate rounds: in 2, EEG was reviewed in sensor space (scoring the presence/absence of each IFCN criterion for each transient or classifying unrestricted by criteria [expert scoring]); in the other, review and classification were performed in source space. Results Cutoff values of 4 and 5 criteria in sensor space and analysis in source space provided high accuracy (91%, 88%, and 90%, respectively), similar to expert scoring (92%). Two methods had specificity exceeding the desired threshold of 95%: using 5 IFCN criteria as cutoff and analysis in source space (both 95.65%); the sensitivity of these methods was 81.48% and 85.19%, respectively. Conclusions The presence of 5 IFCN criteria in sensor space and analysis in source space are optimal for clinical implementation. By extracting these objective features, diagnostic accuracy similar to expert scorings is achieved. Classification of evidence This study provides Class III evidence that IFCN criteria in sensor space and analysis in source space have high specificity (>95%) and sensitivity (81%–85%) for identification of IEDs.
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Affiliation(s)
- Mustafa Aykut Kural
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Lene Duez
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Vibeke Sejer Hansen
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Pål G Larsson
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Stefan Rampp
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Reinhard Schulz
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Hatice Tankisi
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Richard Wennberg
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Bo M Bibby
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Michael Scherg
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark
| | - Sándor Beniczky
- From the Department of Clinical Neurophysiology (M.A.K., L.D., V.S.H., H.T., S.B.), Aarhus University Hospital, Aarhus, Denmark; Department of Neurosurgery (P.G.L.), Rikshospitalet, Oslo University Hospital, Norway; Department of Neurosurgery (S.R.), University Hospital Erlangen, Germany; Department of Neurosurgery (S.R.), University Hospital Halle (Saale), Germany; Epilepsy Center Bethel (R.S.), Mara Hospital, Bielefeld, Germany; Krembil Brain Institute (R.W.), Toronto Western Hospital, University of Toronto, Canada; Department of Biostatistics (B.M.B.), Aarhus University, Denmark; Department of Research (M.S.), BESA GmbH, Gräfelfing, Germany; Department of Clinical Neurophysiology (S.B.), Danish Epilepsy Centre, Dianalund, Denmark; and Department of Clinical Medicine (S.B.), Aarhus University, Denmark.
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11
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Julsgaard M, Hvas CL, Gearry RB, Gibson PR, Fallingborg J, Sparrow MP, Bibby BM, Connell WR, Brown SJ, Kamm MA, Lawrance IC, Vestergaard T, Svenningsen L, Baekdal M, Kammerlander H, Walsh A, Boysen T, Bampton P, Radford-Smith G, Kjeldsen J, Andrews JM, Subramaniam K, Moore GT, Jensen NM, Connor SJ, Wildt S, Wilson B, Ellard K, Christensen LA, Bell SJ. Anti-TNF Therapy in Pregnant Women With Inflammatory Bowel Disease: Effects of Therapeutic Strategies on Disease Behavior and Birth Outcomes. Inflamm Bowel Dis 2020; 26:93-102. [PMID: 31141607 DOI: 10.1093/ibd/izz110] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND Active inflammatory bowel disease (IBD) adversely affects pregnancy outcomes. Little is known about the risk of relapse after stopping anti-tumor necrosis factor (anti-TNF) treatment during pregnancy. We assessed the risk of relapse before delivery in women who discontinued anti-TNF treatment before gestational week (GW) 30, predictors of reduced infant birth weight, a marker associated with long-term adverse outcomes, and rates and satisfaction with counseling. METHODS Pregnant women with IBD receiving anti-TNF treatment were prospectively invited to participate in an electronic questionnaire carried out in 22 hospitals in Denmark, Australia, and New Zealand from 2011 to 2015. Risk estimates were calculated, and birth weight was investigated using t tests and linear regression. RESULTS Of 175 women invited, 153 (87%) responded. In women in remission, the relapse rate did not differ significantly between those who discontinued anti-TNF before GW 30 (1/46, 2%) compared with those who continued treatment (8/74, 11%; relative risk, 0.20; 95% confidence interval [CI], 0.02 to 1.56; P = 0.08). Relapse (P = 0.001) and continuation of anti-TNF therapy after GW 30 (P = 0.007) were independently associated with reduced mean birth weight by 367 g (95% CI, 145 to 589 g; relapse) and 274 g (95% CI, 77 to 471 g; anti-TNF exposure after GW 30). Of 134 (88%) women who received counseling, 116 (87%) were satisfied with the information provided. CONCLUSIONS To minimize fetal exposure in women in remission, discontinuation of anti-TNF before GW 30 seems safe. Relapse and continuation of anti-TNF therapy after GW 30 were each independently associated with lower birth weight, although without an increased risk for birth weight <2500 g. Most women received and were satisfied with counseling.
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Affiliation(s)
- Mette Julsgaard
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark.,Department of Medicine, Horsens Hospital, Horsens, Denmark.,Department of Gastroenterology, St Vincent's Hospital, and University of Melbourne, Melbourne, Australia
| | - Christian L Hvas
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Richard B Gearry
- Department of Medicine, Christchurch Hospital, University of Otago, Christchurch, New Zealand
| | - Peter R Gibson
- Department of Gastroenterology, Alfred Hospital, and Monash University, Melbourne, VIC, Australia
| | - Jan Fallingborg
- Department of Gastroenterology, Aalborg University Hospital, Aalborg, Denmark
| | - Miles P Sparrow
- Department of Gastroenterology, Alfred Hospital, and Monash University, Melbourne, VIC, Australia
| | - Bo M Bibby
- Department of Biostatistics, University of Aarhus, Aarhus, Denmark
| | - William R Connell
- Department of Gastroenterology, St Vincent's Hospital, and University of Melbourne, Melbourne, Australia
| | - Steven J Brown
- Department of Gastroenterology, St Vincent's Hospital, and University of Melbourne, Melbourne, Australia
| | - Michael A Kamm
- Department of Gastroenterology, St Vincent's Hospital, and University of Melbourne, Melbourne, Australia
| | - Ian C Lawrance
- School of Medicine and Pharmacology, University of Western Australia, Harry Perkins Institute for Medical Research, Murdoch, WA, Australia.,Centre for inflammatory Bowel Diseases, Saint John of God Hospital, Subiaco, WA, Australia
| | - Thea Vestergaard
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Lise Svenningsen
- Department of Medicine, Horsens Hospital, Horsens, Denmark.,Department of Medicine, Herning Hospital, Herning, Denmark
| | - Mille Baekdal
- Gastrounit, Medical Division, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark
| | - Heidi Kammerlander
- Department of Gastroenterology, Hospital of Southwest Jutland, Esbjerg, Denmark.,Department of Gastroenterology, Odense University Hospital, Odense, Denmark
| | - Alissa Walsh
- Department of Gastroenterology, St. Vincent's Hospital, Sydney, NSW, Australia
| | - Trine Boysen
- Gastrounit, Medical Division, Herlev Hospital, University of Copenhagen, Herlev, Denmark
| | - Peter Bampton
- Department of Gastroenterology, Flinders Medical Centre, Bedford Park, SA, Australia
| | - Graham Radford-Smith
- Inflammatory Bowel Diseases Unit, Royal Brisbane & Women's Hospital, University of Queensland School of Medicine, Brisbane, QLD, Australia
| | - Jens Kjeldsen
- Department of Gastroenterology, Odense University Hospital, Odense, Denmark
| | - Jane M Andrews
- Department of Gastroenterology & Hepatology, Royal Adelaide Hospital, University of Adelaide, Adelaide, SA, Australia
| | - Kavitha Subramaniam
- Gastroenterology and Hepatology Unit, The Canberra Hospital, Australian National University, Canberra, ACT, Australia
| | - Gregory T Moore
- Department of Gastroenterology, Monash Health, and School of Clinical Sciences Monash University, Melbourne, VIC, Australia
| | - Nanna M Jensen
- Abdominalcenter K, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Susan J Connor
- Department of Gastroenterology, Liverpool Hospital, Sydney, University of NSW, and Ingham Institute of Applied Medical Research, Sydney, Australia
| | - Signe Wildt
- Medical Department, Zealand University Hospital, Køge, Denmark
| | - Benedicte Wilson
- Department of Internal Medicine, Nykøbing Falster Hospital, Nykøbing, Denmark
| | - Kathrine Ellard
- Mater Hospital, Department of Gastroenterology, Sydney, Australia
| | - Lisbet A Christensen
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark.,Institute of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Sally J Bell
- Department of Gastroenterology, St Vincent's Hospital, and University of Melbourne, Melbourne, Australia.,Department of Gastroenterology, Monash Health, and School of Clinical Sciences Monash University, Melbourne, VIC, Australia
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12
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Tøttrup M, Søballe K, Bibby BM, Hardlei TF, Hansen P, Fuursted K, Birke-Sørensen H, Bue M. Bone, subcutaneous tissue and plasma pharmacokinetics of cefuroxime in total knee replacement patients - a randomized controlled trial comparing continuous and short-term infusion. APMIS 2019; 127:779-788. [PMID: 31515843 DOI: 10.1111/apm.12996] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 09/06/2019] [Indexed: 11/28/2022]
Abstract
Cefuroxime is widely used as antibiotic prophylaxis for orthopaedic procedures. We evaluated bone, subcutaneous tissue (SCT) and plasma pharmacokinetics of cefuroxime in male patients undergoing total knee replacement (TKR) after both traditional short-term infusion (STI) and continuous infusion (CI). Eighteen male patients undergoing TKR were randomly assigned to STI or CI of 1.5 g of cefuroxime. Measurements were obtained in plasma, SCT, cancellous and cortical bone every 30 min for 8 h following surgery. For sampling in solid tissues, microdialysis was applied. Population pharmacokinetic modelling was performed in order to estimate pharmacokinetic parameters, and to assess the probability of attaining cefuroxime concentrations above clinically relevant minimal inhibitory concentrations (MICs) for 65% and 90% of the 8 h dosing interval. Low SCT and cortical bone penetration were found in both the STI and the CI group, but the findings were only significant in the STI group. Irrespective of MIC, tissue and target, CI leads to improved probability of attaining relevant pharmacokinetic targets compared with STI. For the Staphylococcus aureus MIC breakpoint (4 μg/mL), STI leads to inadequate probability of target attainment. CI of 1.5 g of cefuroxime leads to improved probability of attaining relevant pharmacokinetic targets in male TKR patients compared with traditional STI. These findings suggest that application of CI may improve antibiotic prophylaxis for male TKR patients.
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Affiliation(s)
- Mikkel Tøttrup
- Department of Orthopaedic Surgery, Horsens Regional Hospital, Horsens, Denmark.,Orthopaedic Research Unit, Aarhus University Hospital, Aarhus, Denmark.,Department of Orthopaedic Surgery, Aalborg University Hospital, Farsø, Denmark
| | - Kjeld Søballe
- Orthopaedic Research Unit, Aarhus University Hospital, Aarhus, Denmark.,Department of Orthopaedic Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Bo M Bibby
- Department of Biostatistics, Aarhus University, Aarhus, Denmark
| | - Tore F Hardlei
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
| | - Peter Hansen
- Department of Orthopaedic Surgery, Horsens Regional Hospital, Horsens, Denmark
| | | | | | - Mats Bue
- Department of Orthopaedic Surgery, Horsens Regional Hospital, Horsens, Denmark.,Orthopaedic Research Unit, Aarhus University Hospital, Aarhus, Denmark
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13
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Kural MA, Tankisi H, Duez L, Hansen VS, Bibby BM, Wennberg R, Rampp S, Scherg M, Larsen PG, Schulz R, Beniczky S. O-44 Clinical validation of criteria for identification of epileptiform EEG discharges in sensor and source space. Clin Neurophysiol 2019. [DOI: 10.1016/j.clinph.2019.04.359] [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]
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14
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Julsgaard M, Kjeldsen J, Bibby BM, Brock B, Baumgart DC. Vedolizumab Concentrations in the Breast Milk of Nursing Mothers With Inflammatory Bowel Disease. Gastroenterology 2018; 154:752-754.e1. [PMID: 28988916 DOI: 10.1053/j.gastro.2017.08.067] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 08/25/2017] [Indexed: 12/02/2022]
Affiliation(s)
- Mette Julsgaard
- Aarhus University Hospital, Department of Hepatology and Gastroenterology, Aarhus, Denmark and Horsens Hospital, Department of Medicine, Horsens, Denmark
| | - Jens Kjeldsen
- Odense University Hospital, Department of Gastroenterology, University of Odense, Odense, Denmark
| | - Bo M Bibby
- Department of Biostatistics, University of Aarhus, Aarhus, Denmark
| | - Birgitte Brock
- Aarhus University Hospital, Department of Clinical Biochemistry, University of Aarhus, Aarhus, Denmark
| | - Daniel C Baumgart
- Department of Gastroenterology and Hepatology, Charité Medical School, Humboldt-University of Berlin, Berlin, Germany
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15
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Krogstrup NV, Oltean M, Nieuwenhuijs-Moeke GJ, Dor FJMF, Møldrup U, Krag SP, Bibby BM, Birn H, Jespersen B. Remote Ischemic Conditioning on Recipients of Deceased Renal Transplants Does Not Improve Early Graft Function: A Multicenter Randomized, Controlled Clinical Trial. Am J Transplant 2017; 17:1042-1049. [PMID: 27696662 DOI: 10.1111/ajt.14075] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 09/20/2016] [Accepted: 09/22/2016] [Indexed: 01/25/2023]
Abstract
Delayed graft function is a frequent complication following deceased donor renal transplantation, and is closely related to ischemia-reperfusion injury. Experimental and clinical studies have shown protection by remote ischemic conditioning (RIC). We hypothesized that recipient RIC before kidney graft reperfusion reduces the time to graft recovery. This multicenter, blinded, randomized, controlled clinical trial included 225 adult recipients of renal transplants from deceased donors at four transplantation centers in Denmark, Sweden, and the Netherlands. Participants were randomized 1:1 to RIC or sham-RIC. RIC consisted of 4 × 5-min thigh occlusion by an inflatable tourniquet each followed by 5-min deflation, performed during surgery prior to graft reperfusion. The tourniquet remained deflated for sham-RIC. The primary endpoint was the estimated time to a 50% decrease in baseline plasma creatinine (tCr50) calculated from plasma creatinine measurements 30 days posttransplant or 30 days after the last, posttransplant dialysis. No significant differences were observed between RIC and sham-RIC-treated patients in the primary outcome median tCr50 (122 h [95% confidence interval [CI] 98-151] vs. 112 h [95% CI 91-139], p = 0.58), or the number of patients receiving dialysis in the first posttransplant week (33% vs. 35%, p = 0.71). Recipient RIC does not reduce the time to graft recovery in kidney transplantation from deceased donors. ClinicalTrials.gov: NCT01395719.
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Affiliation(s)
- N V Krogstrup
- Department of Renal Medicine, Aarhus University, Aarhus, Denmark.,Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - M Oltean
- The Transplant Institute, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - G J Nieuwenhuijs-Moeke
- Department of Anaesthesiology, University Medical Center Groningen, Groningen, the Netherlands
| | - F J M F Dor
- Division of HPB & Transplant Surgery, Department of Surgery, Erasmus MC, University Medical Center, Rotterdam, the Netherlands
| | - U Møldrup
- Department of Urology, Aarhus University Hospital, Aarhus, Denmark
| | - S P Krag
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | - B M Bibby
- Department of Biostatistics, Aarhus University, Aarhus, Denmark
| | - H Birn
- Department of Renal Medicine, Aarhus University, Aarhus, Denmark.,Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - B Jespersen
- Department of Renal Medicine, Aarhus University, Aarhus, Denmark.,Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
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Julsgaard M, Christensen LA, Gibson PR, Gearry RB, Fallingborg J, Hvas CL, Bibby BM, Uldbjerg N, Connell WR, Rosella O, Grosen A, Brown SJ, Kjeldsen J, Wildt S, Svenningsen L, Sparrow MP, Walsh A, Connor SJ, Radford-Smith G, Lawrance IC, Andrews JM, Ellard K, Bell SJ. Concentrations of Adalimumab and Infliximab in Mothers and Newborns, and Effects on Infection. Gastroenterology 2016; 151:110-9. [PMID: 27063728 DOI: 10.1053/j.gastro.2016.04.002] [Citation(s) in RCA: 209] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 03/21/2016] [Accepted: 04/01/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Little is known about in utero exposure to and postnatal clearance of anti-tumor necrosis factor (anti-TNF) agents in neonates. We investigated the concentrations of adalimumab and infliximab in umbilical cord blood of newborns and rates of clearance after birth, and how these correlated with drug concentrations in mothers at birth and risk of infection during the first year of life. METHODS We performed a prospective study of 80 pregnant women with inflammatory bowel diseases at tertiary hospitals in Denmark, Australia, and New Zealand from March 2012 through November 2014: 36 received adalimumab and 44 received infliximab; 39 received concomitant thiopurines during pregnancy. Data were collected from medical records on disease activity and treatment before, during, and after pregnancy. Concentrations of anti-TNF agents were measured in blood samples from women at delivery and in umbilical cords, and in infants for every 3 months until the drug was no longer detected. RESULTS The time from last exposure to anti-TNF agent during pregnancy correlated inversely with the concentration of the drugs in the umbilical cord (adalimumab: r = -0.64, P = .0003; infliximab: r = -0.77, P < .0001) and in mothers at time of birth (adalimumab, r = -0.80; infliximab, r = -0.80; P < .0001 for both). The median ratio of infant:mother drug concentration at birth was 1.21 for adalimumab (95% confidence interval [CI], 0.94-1.49) and 1.97 for infliximab (95% CI, 1.50-2.43). The mean time to drug clearance in infants was 4.0 months for adalimumab (95% CI, 2.9-5.0) and 7.3 months for infliximab (95% CI, 6.2-8.3; P < .0001). Drugs were not detected in infants after 12 months of age. Bacterial infections developed in 4 infants (5%) and viral infections developed in 16 (20%), all with benign courses. The relative risk for infection was 2.7 in infants whose mothers received the combination of an anti-TNF agent and thiopurine, compared with anti-TNF monotherapy (95% CI, 1.09-6.78; P = .02). CONCLUSIONS In a prospective study of infants born to mothers who received anti-TNF agents during pregnancy, we detected the drugs until 12 months of age. There was an inverse correlation between the time from last exposure during pregnancy and drug concentration in the umbilical cord. Infliximab was cleared more slowly than adalimumab from the infants. The combination of an anti-TNF agent and thiopurine therapy during pregnancy increased the relative risk for infant infections almost 3-fold compared with anti-TNF monotherapy. Live vaccines therefore should be avoided for up to 1 year unless drug clearance is documented, and pregnant women should be educated on the risks of anti-TNF use.
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Affiliation(s)
- Mette Julsgaard
- Department of Hepatology and Gastroenterology, University of Aarhus, Aarhus, Denmark; Department of Gastroenterology, St. Vincent's Hospital, University of Melbourne, Melbourne, Victoria, Australia.
| | - Lisbet A Christensen
- Department of Hepatology and Gastroenterology, University of Aarhus, Aarhus, Denmark
| | - Peter R Gibson
- Department of Gastroenterology, Alfred Hospital, Monash University, Melbourne, Victoria, Australia
| | - Richard B Gearry
- Department of Medicine, Christchurch Hospital, University of Otago, Christchurch, New Zealand
| | - Jan Fallingborg
- Department of Gastroenterology, Aalborg University Hospital, Aalborg, Denmark
| | - Christian L Hvas
- Department of Hepatology and Gastroenterology, University of Aarhus, Aarhus, Denmark
| | - Bo M Bibby
- Department of Biostatistics, University of Aarhus, Aarhus, Denmark
| | - Niels Uldbjerg
- Department of Obstetrics and Gynaecology, Aarhus University Hospital, University of Aarhus, Aarhus, Denmark
| | - William R Connell
- Department of Gastroenterology, St. Vincent's Hospital, University of Melbourne, Melbourne, Victoria, Australia
| | - Ourania Rosella
- Department of Gastroenterology, Alfred Hospital, Monash University, Melbourne, Victoria, Australia
| | - Anne Grosen
- Department of Hepatology and Gastroenterology, University of Aarhus, Aarhus, Denmark
| | - Steven J Brown
- Department of Gastroenterology, St. Vincent's Hospital, University of Melbourne, Melbourne, Victoria, Australia
| | - Jens Kjeldsen
- Department of Gastroenterology, Odense University Hospital, University of Odense, Odense, Denmark
| | - Signe Wildt
- Department of Medicine, Køge Hospital, University of Copenhagen, Køge, Denmark
| | | | - Miles P Sparrow
- Department of Gastroenterology, Alfred Hospital, Monash University, Melbourne, Victoria, Australia
| | - Alissa Walsh
- Department of Gastroenterology, St. Vincent's Hospital, Sydney, New South Wales, Australia
| | - Susan J Connor
- Department of Gastroenterology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Graham Radford-Smith
- Inflammatory Bowel Diseases Unit, Royal Brisbane and Women's Hospital, University of Queensland School of Medicine, Brisbane, Queensland, Australia
| | - Ian C Lawrance
- School of Medicine and Pharmacology, University of Western Australia, Harry Perkins Institute for Medical Research, Murdoch, Western Australia, Australia; Centre for Inflammatory Bowel Diseases, Saint John of God Hospital, Subiaco, Western Australia, Australia
| | - Jane M Andrews
- Department of Gastroenterology and Hepatology, Royal Adelaide Hospital, University of Adelaide, Adelaide, South Australia, Australia
| | - Kathrine Ellard
- Department of Gastroenterology, Royal North Shore Hospital, Sydney, Australia
| | - Sally J Bell
- Department of Gastroenterology, St. Vincent's Hospital, University of Melbourne, Melbourne, Victoria, Australia
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Peters CD, Kjaergaard KD, Nielsen CH, Christensen KL, Bibby BM, Jensen JD, Jespersen B. Long-term effects of angiotensin II blockade with irbesartan on inflammatory markers in hemodialysis patients: A randomized double blind placebo controlled trial (SAFIR study). Hemodial Int 2016; 21:47-62. [PMID: 27346437 DOI: 10.1111/hdi.12436] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Low-grade chronic inflammation is common in hemodialysis (HD) patients. Previous studies suggest an anti-inflammatory effect of angiotensin II receptor blocker (ARB) treatment. The aim of this study was to compare the effect of ARB vs. placebo on plasma concentrations of inflammatory markers in HD patients. METHODS Adult HD patients were randomized for double-blind treatment with the ARB irbesartan 150-300 mg/day or placebo. At baseline, 1 week, 3, 6, 9, and 12 months plasma high sensitivity C-reactive protein (hsCRP), interleukin (IL)-1β, IL-6, IL-8, IL-18, and transforming growth factor-β (TGF-β) were measured using Luminex and enzyme-linked immunosorbent assay (ELISA) technology. FINDINGS Eighty-two patients were randomized (placebo/ARB: 41/41). The groups did not differ in initial levels of any of the inflammatory markers (placebo/ARB median(range)): hsCRP 3.3(0.2-23.4)/2.7(0.2-29.6) μg/mL; IL-1β 1.1(0.0-45.9)/1.1(0.0-7.2) pg/mL; IL-6 10(1-90)/12(1-84) pg/mL; IL-8 31(9-134)/34(5-192) pg/mL; IL-18 364(188-1343)/377(213-832) pg/mL; TGF-β 3.2(0.8-13.9)/3.6(1.3-3.8) ng/mL. Overall, there was no significant difference in hsCRP, IL-6, IL-8, and TGF-β between placebo and ARB-treated patients during the study period, and hsCRP, IL-6, IL-8, and TGF-β were relatively stable during the study period (P ≥ 0.18 in all tests for parallel curves, equal levels, and constant levels). The IL-1β level was slightly different in the two groups over time, but not significantly (P = 0.09 in test for parallel curves) and it was also relatively stable during the study period (P ≥ 0.49 in tests for equal levels and constant level). IL-18 was the only inflammatory marker which was not constant during the study period (P = 0.001 in test for constant level), but there was no significant difference between placebo and ARB-treated (P ≥ 0.51 in tests for parallel curves and equal levels). DISCUSSION Inflammatory biomarkers were neither acutely, nor in the long-term significantly affected by the ARB irbesartan. Our findings suggest that ARB treatment in HD patients does not offer protective anti-inflammatory effects.
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Affiliation(s)
- Christian D Peters
- Department of Renal Medicine, Aarhus University Hospital, Denmark.,Institute of Clinical Medicine, Aarhus University, Denmark
| | - Krista D Kjaergaard
- Department of Renal Medicine, Aarhus University Hospital, Denmark.,Institute of Clinical Medicine, Aarhus University, Denmark
| | - Claus H Nielsen
- Institute for Inflammation Research, Rigshospitalet, Copenhagen, Denmark
| | | | - Bo M Bibby
- Department of Biostatistics, Aarhus University, Denmark
| | - Jens D Jensen
- Department of Renal Medicine, Aarhus University Hospital, Denmark.,Institute of Clinical Medicine, Aarhus University, Denmark
| | - Bente Jespersen
- Department of Renal Medicine, Aarhus University Hospital, Denmark.,Institute of Clinical Medicine, Aarhus University, Denmark
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18
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Krogstrup NV, Oltean M, Nieuwenhuijs-Moeke GJ, Dor FJMF, Møldrup U, Kragh SP, Bibby BM, Birn H, Jespersen B. SO013REMOTE ISCHAEMIC CONDITIONING ON RECIPIENTS OF DECEASED RENAL TRANSPLANTS DOES NOT IMPROVE EARLY GRAFT FUNCTION. A MULTICENTRE, RANDOMISED, CONTROLLED CLINICAL TRIAL. Nephrol Dial Transplant 2016. [DOI: 10.1093/ndt/gfw119.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Farup J, Rahbek SK, Storm AC, Klitgaard S, Jørgensen H, Bibby BM, Serena A, Vissing K. Effect of degree of hydrolysis of whey protein on in vivo plasma amino acid appearance in humans. Springerplus 2016; 5:382. [PMID: 27065230 PMCID: PMC4814394 DOI: 10.1186/s40064-016-1995-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 03/14/2016] [Indexed: 11/15/2022]
Abstract
Whey protein is generally found to be faster digested and to promote faster and higher increases in plasma amino acid concentrations during the immediate ~60 min following protein ingestion compared to casein. The aim of the present study was to compare three different whey protein hydrolysates with varying degrees of hydrolysis (DH, % cleaved peptide bonds) to evaluate if the degree of whey protein hydrolysis influences the rate of amino acid plasma appearance in humans. A casein protein was included as reference. The three differentially hydrolysed whey proteins investigated were: High degree of hydrolysis (DH, DH = 48 %), Medium DH (DH = 27 %), and Low DH (DH = 23 %). The casein protein was intact. Additionally, since manufacturing of protein products may render some amino acids unavailable for utilisation in the body the digestibility and the biological value of all four protein fractions were evaluated in a rat study. A two-compartment model for the description of the postprandial plasma amino acid kinetics was applied to investigate the rate of postprandial total amino acid plasma appearance of the four protein products. The plasma amino acid appearance rates of the three whey protein hydrolysates (WPH) were all significantly higher than for the casein protein, however, the degree of hydrolysis of the WPH products did not influence plasma total amino acid appearance rate (estimates of DH and 95 % confidence intervals [CI] (mol L−1 min−1): High DH 0.0585 [0.0454, 0.0754], Medium DH 0.0594 [0.0495, 0.0768], Low DH 0.0560 [0.0429, 0.0732], Casein 0.0194 [0.0129, 0.0291]). The four protein products were all highly digestible, while the biological value decreased with increasing degree of hydrolysis. In conclusion, the current study does not provide evidence that the degree of whey protein hydrolysis is a strong determinant for plasma amino acid appearance rate within the studied range of hydrolysis and protein dose.
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Affiliation(s)
- Jean Farup
- Section for Sport Science, Department of Public Health, Aarhus University, Dalgas Avenue 4, 8000 Aarhus, Denmark
| | - Stine Klejs Rahbek
- Section for Sport Science, Department of Public Health, Aarhus University, Dalgas Avenue 4, 8000 Aarhus, Denmark
| | - Adam C Storm
- Department of Animal Science, Aarhus University, Aarhus, Denmark
| | | | - Henry Jørgensen
- Department of Animal Science, Aarhus University, Aarhus, Denmark
| | - Bo M Bibby
- Department of Biostatistics, Aarhus University, Aarhus, Denmark
| | - Anja Serena
- Arla Foods Ingredients Group P/S, Aarhus, Denmark
| | - Kristian Vissing
- Section for Sport Science, Department of Public Health, Aarhus University, Dalgas Avenue 4, 8000 Aarhus, Denmark
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20
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Danz JC, Bibby BM, Katsaros C, Stavropoulos A. Effects of facial tooth movement on the periodontium in rats: a comparison between conventional and low force. J Clin Periodontol 2016; 43:229-37. [DOI: 10.1111/jcpe.12505] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Jan C. Danz
- Department of Orthodontics and Dentofacial Orthopedics; University of Bern; Bern Switzerland
- Department of Dentistry; Aarhus University; Aarhus Denmark
| | - Bo M. Bibby
- Department of Public Health; Institute of Biostatistics; Aarhus University; Aarhus Denmark
| | - Christos Katsaros
- Department of Orthodontics and Dentofacial Orthopedics; University of Bern; Bern Switzerland
| | - Andreas Stavropoulos
- Department of Periodontology and Community Dentistry; Faculty of Odontology; Malmö University; Malmö Sweden
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21
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Abstract
In the past decades, sense of control-the feeling that one is in control of one's actions has gained much scientific interests. Various scales have been used to measure sense of control in previous studies, yet no study has allowed participants to create a scale for rating their control experiences despite advances in the neighboring field of conscious vision has been linked to this approach. Here, we examined how participants preferred to rate sense of control during a simple motor control task by asking them to create a scale to be used to describe their sense of control experience during the task. Scale with six steps was most frequently created. Even though some variability was observed in the number of preferred scale steps, descriptions were highly similar across all participants when scales were converted to the same continuum. When we divided participants into groups based on their number of preferred scale steps, mean task performance and sense of control could be described as sigmoid functions of the noise level, and the function parameters were equivalent across groups. We also showed that task performance increased exponentially as a function of control rating, and that, again, function parameters were equivalent for all groups. In summary, the present study established a participant-generated 6-point sense of control rating scale for simple computerized motor control tasks that can be empirically tested against other measures of control in future studies.
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Affiliation(s)
- Mia Y Dong
- Cognitive Neuroscience Research Unit, Center of Functionally Integrative Neuroscience, Aarhus University , Aarhus, Denmark
| | - Kristian Sandberg
- Cognitive Neuroscience Research Unit, Center of Functionally Integrative Neuroscience, Aarhus University , Aarhus, Denmark ; Hammel Neurorehabilitation and Research Centre, Aarhus University Hospital , Hammel, Denmark ; Institute of Cognitive Neuroscience, University College London , London, UK
| | - Bo M Bibby
- Department of Biostatistics, Aarhus University , Aarhus, Denmark
| | - Michael N Pedersen
- Cognitive Neuroscience Research Unit, Center of Functionally Integrative Neuroscience, Aarhus University , Aarhus, Denmark
| | - Morten Overgaard
- Cognitive Neuroscience Research Unit, Center of Functionally Integrative Neuroscience, Aarhus University , Aarhus, Denmark
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22
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Krogstrup NV, Oltean M, Bibby BM, Nieuwenhuijs-Moeke GJ, Dor FJMF, Birn H, Jespersen B. Remote ischaemic conditioning on recipients of deceased renal transplants, effect on immediate and extended kidney graft function: a multicentre, randomised controlled trial protocol (CONTEXT). BMJ Open 2015; 5:e007941. [PMID: 26297360 PMCID: PMC4550713 DOI: 10.1136/bmjopen-2015-007941] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Delayed graft function due to ischaemia-reperfusion injury is a frequent complication in deceased donor renal transplantation. Experimental evidence indicates that remote ischaemic conditioning (RIC) provides systemic protection against ischaemia-reperfusion injury in various tissues. METHODS AND ANALYSIS 'Remote ischaemic conditioning in renal transplantation--effect on immediate and extended kidney graft function' (the CONTEXT study) is an investigator initiated, multicentre, randomised controlled trial investigating whether RIC of the leg of the recipient improves short and long-term graft function following deceased donor kidney transplantation. The study will include 200 kidney transplant recipients of organ donation after brain death and 20 kidney transplant recipients of organ donation after circulatory death. Participants are randomised in a 1:1 design to RIC or sham-RIC (control). RIC consists of four cycles of 5 min occlusion of the thigh by a tourniquet inflated to 250 mm Hg, separated by 5 min of deflation. Primary end point is the time to a 50% reduction from the baseline plasma creatinine, estimated from the changes of plasma creatinine values 30 days post-transplant or 30 days after the last performed dialysis post-transplant. Secondary end points are: need of dialysis post-transplant, measured and estimated-glomerular filtration rate (GFR) at 3 and 12 months after transplantation, patient and renal graft survival, number of rejection episodes in the first year, and changes in biomarkers of acute kidney injury and inflammation in plasma, urine and graft tissue. ETHICS AND DISSEMINATION The study is approved by the local ethical committees and national data security agencies. Results are expected to be published in 2016. TRIAL REGISTRATION NUMBER NCT01395719.
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Affiliation(s)
- Nicoline V Krogstrup
- Department of Renal Medicine, Aarhus University Hospital, Aarhus, Denmark
- Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Mihai Oltean
- The Transplant Institute, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Bo M Bibby
- Department of Biostatistics, Aarhus, Denmark
| | | | - Frank J M F Dor
- Division of HPB & Transplant Surgery, Department of Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Henrik Birn
- Department of Renal Medicine, Aarhus University Hospital, Aarhus, Denmark
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Bente Jespersen
- Department of Renal Medicine, Aarhus University Hospital, Aarhus, Denmark
- Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
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23
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Peters CD, Kjaergaard KD, Jensen JD, Christensen KL, Strandhave C, Tietze IN, Novosel MK, Bibby BM, Jensen LT, Sloth E, Jespersen B. The Authors Reply. Kidney Int 2015; 88:193-4. [PMID: 26126092 DOI: 10.1038/ki.2015.93] [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: 11/09/2022]
Affiliation(s)
- Christian D Peters
- 1] Department of Renal Medicine, Aarhus University Hospital, Aarhus, Denmark [2] Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Krista D Kjaergaard
- 1] Department of Renal Medicine, Aarhus University Hospital, Aarhus, Denmark [2] Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Jens D Jensen
- 1] Department of Renal Medicine, Aarhus University Hospital, Aarhus, Denmark [2] Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | | | | | - Ida N Tietze
- Department of Medicine, Viborg Regional Hospital, Viborg, Denmark
| | - Marija K Novosel
- Department of Medicine, Fredericia Hospital, Fredericia, Denmark
| | - Bo M Bibby
- Department of Biostatistics, Aarhus University, Aarhus, Denmark
| | - Lars T Jensen
- Department of Clinical Physiology and Nuclear Medicine, Herlev Hospital, Herlev, Denmark
| | - Erik Sloth
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
| | - Bente Jespersen
- 1] Department of Renal Medicine, Aarhus University Hospital, Aarhus, Denmark [2] Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
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24
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Feys P, Bibby BM, Baert I, Dalgas U. Walking capacity and ability are more impaired in progressive compared to relapsing type of multiple sclerosis. Eur J Phys Rehabil Med 2015; 51:207-210. [PMID: 25180640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Patients with progressive multiple sclerosis (MS) have been attributed greater walking disability than relapsing-remitting MS (RRMS) patients but quantitative data on walking speed and ability are lacking. AIM To investigate the impact of type of MS on severity of reduced walking ability and capacity taking into account age, sex, height and disease duration. DESIGN Cross-sectional observational multi-center study SETTING European MS centers providing either in- or out-patient services, or both. POPULATION This study included 502 patients: 259, 162 and 81 patients showed RRMS, secondary and primary progressive MS respectively. METHODS Walking was evaluated by T25FW, six minute walk test and MS-Walking Scale-12. Patient characteristics were compared using a one-way ANOVA, and simple and multivariate regression analysis were applied with the walking measures. RESULTS In adjusted (sex, age, weight, height and disease duration) analyses, walking impairments were more than 20% greater in progressive types of MS compared to RRMS. There were also indications of greater walking impairment in primary compared to secondary progressive MS patients. CONCLUSION Clinical walking impairment was larger in progressive compared to relapsing-remitting type of MS. The biological disease mechanism, being degeneration or inflammation, impacts on disability. CLINICAL REHABILITATION IMPACT Health care professionals must be aware of different severity of walking impairment in progressive compared to relapsing type of MS, and need for intensive treatment. Also, studies must report rehabiltiation effects according to MS type.
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Affiliation(s)
- P Feys
- REVAL, University of Hasselt, REVAL/BIOMED, Diepenbeek, Belgium -
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25
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Abstract
Exclusion tasks have been proposed as objective measures of unconscious perception as they do not depend upon subjective ratings. In exclusion tasks, participants have to complete a task without using a previously presented prime. Use of the prime is taken as evidence for unconscious processing in the absence of awareness, yet it may also simply indicate that participants have weak experiences but fail to realize that these affect the response or fail to counter the effect on the response. Here, we tested this claim by allowing participants to rate their experience of a masked prime on the perceptual awareness scale (PAS) after the exclusion task. Results showed that the prime was used almost as often when participants reported having seen a “weak glimpse” of the prime as when they claimed to have “no experience” of the prime, thus suggesting participants frequently have weak (possibly contentless) experiences of the stimulus when failing to exclude. This indicates that the criteria for report of awareness is lower (i.e., more liberal) than that for exclusion and that failure to exclude should not be taken as evidence of complete absence of awareness.
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Affiliation(s)
- Kristian Sandberg
- Cognitive Neuroscience Research Unit - Center of Functionally Integrative Neuroscience, Hammel Neurorehabilitation and Research Centre - Danish Neuroscience Center, Aarhus University Hospital Aarhus, Denmark ; Institute of Cognitive Neuroscience, University College London London, UK
| | - Simon H Del Pin
- Department of Communication and Psychology, Center for Cognitive Neuroscience, Aalborg University Aalborg, Denmark
| | - Bo M Bibby
- Department of Biostatistics, Aarhus University Aarhus, Denmark
| | - Morten Overgaard
- Cognitive Neuroscience Research Unit - Center of Functionally Integrative Neuroscience, Hammel Neurorehabilitation and Research Centre - Danish Neuroscience Center, Aarhus University Hospital Aarhus, Denmark ; Department of Communication and Psychology, Center for Cognitive Neuroscience, Aalborg University Aalborg, Denmark
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26
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Fisker AB, Bale C, Rodrigues A, Balde I, Fernandes M, Jørgensen MJ, Danneskiold-Samsøe N, Hornshøj L, Rasmussen J, Christensen ED, Bibby BM, Aaby P, Benn CS. High-dose vitamin A with vaccination after 6 months of age: a randomized trial. Pediatrics 2014; 134:e739-48. [PMID: 25136048 DOI: 10.1542/peds.2014-0550] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The World Health Organization recommends vitamin A supplementation (VAS) at routine vaccination contacts after 6 months of age based on the assumption that it reduces mortality by 24%. The policy has never been evaluated in randomized controlled trials for its effect on overall mortality. We conducted a randomized double-blind trial to evaluate the effect of VAS with vaccines. METHODS We randomized children aged 6 to 23 months 1:1 to VAS (100000 IU if aged 6-11 months, 200000 IU if aged 12-23 months) or placebo at vaccination contacts in Guinea-Bissau. Mortality rates were compared in Cox proportional-hazards models overall, and by gender and vaccine. RESULTS Between August 2007 and November 2010, 7587 children were enrolled. Within 6 months of follow-up 80 nonaccident deaths occurred (VAS: 38; placebo: 42). The mortality rate ratio (MRR) comparing VAS versus placebo recipients was 0.91 (95% confidence interval 0.59-1.41) and differed significantly between boys (MRR 1.92 [0.98-3.75]) and girls (MRR 0.45 [0.24-0.87]) (P = .003 for interaction between VAS and gender). At enrollment, 42% (3161/7587) received live measles vaccine, 29% (2154/7587) received inactivated diphtheria-tetanus-pertussis-containing vaccines, and 21% (1610/7587) received both live and inactivated vaccines. The effect of VAS did not differ by vaccine group. CONCLUSIONS This is the first randomized controlled trial to assess the effect of the policy on overall mortality. VAS had no overall effect, but the effect differed significantly by gender. More trials to ensure an optimal evidence-based vitamin A policy are warranted.
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Affiliation(s)
- Ane B Fisker
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau; Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Copenhagen, Denmark; Department of Biostatistics, Institute of Public Health, University of Aarhus, Aarhus, Denmark; and
| | - Carlito Bale
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | | | - Ibraima Balde
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | | | - Mathias J Jørgensen
- Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Copenhagen, Denmark
| | - Niels Danneskiold-Samsøe
- Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Copenhagen, Denmark
| | - Linda Hornshøj
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | - Julie Rasmussen
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | | | - Bo M Bibby
- Department of Biostatistics, Institute of Public Health, University of Aarhus, Aarhus, Denmark; and
| | - Peter Aaby
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau; Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Copenhagen, Denmark
| | - Christine S Benn
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau; Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Copenhagen, Denmark; Institute of Clinical Research, University of Southern Denmark/Odense University Hospital, Odense, Denmark
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Reinhard M, Frystyk J, Jespersen B, Randers E, Bjerre M, Christiansen JS, Flyvbjerg A, Bibby BM, Ivarsen P. Impaired postprandial response of the insulin-like growth factor system in maintenance haemodialysis. Clin Endocrinol (Oxf) 2014; 80:757-65. [PMID: 24138555 DOI: 10.1111/cen.12352] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 09/02/2013] [Accepted: 10/15/2013] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Patients on maintenance haemodialysis (HD) have reduced circulating free and bioactive insulin-like growth factor I (IGF-I) due to increased IGF-binding proteins (IGFBPs). This study investigated the postprandial response of the IGF system in HD patients compared with matched healthy subjects. DESIGN AND PATIENTS In a crossover study, twelve nondiabetic HD patients were assigned in a random order to three 10-h study days: (1) a non-HD day with one meal served at baseline (NHDM1), (2) an HD day with one meal served during HD (HDM1) and (3) an HD day with two meals served during and after HD, respectively (HDM2). Twelve healthy controls conducted session 1. RESULTS After the baseline meal, insulin concentrations changed similarly in HD patients and controls, whereas hyperglycaemia was more prolonged in HD patients (P < 0·001). Postprandial IGFBP-1 showed greater reductions from baseline in controls (-76% [-81; -70%], mean [95% confidence intervals], P < 0·001) than in patients on non-HD days (-45% [-57; -30%], P < 0·001). In the latter group, the response was even more attenuated during HD (-22% [-38; -1%] and -24% [-40; -4%], P ≤ 0·041). After the second meal on HDM2 days, IGFBP-1 further decreased (-50% [-61; -37%], P < 0·001), whereas IGFBP-1 returned to baseline levels on the other study days. Consistently, at the end of the study days, bioactive IGF-I was significantly above baseline only on HDM2 days (+22% [+5; +43%], P = 0·012). CONCLUSIONS HD patients were unable to suppress IGFBP-1 to the same extent as healthy controls, which may increase the risk of protein-energy wasting in maintenance HD. A second meal after HD, however, effectively suppressed IGFBP-1 and increased bioactive IGF-I.
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Affiliation(s)
- Mark Reinhard
- Department of Renal Medicine, Aarhus University Hospital, Aarhus C, Denmark; Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus C, Denmark
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Mikkelsen KS, Sørensen M, Frisch K, Villadsen GE, Bibby BM, Keiding S. The lumped constant for the galactose analog 2-18F-fluoro-2-deoxy-D-galactose is increased in patients with parenchymal liver disease. J Nucl Med 2014; 55:590-4. [PMID: 24591487 DOI: 10.2967/jnumed.113.125559] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
UNLABELLED The galactose analog 2-(18)F-fluoro-2-deoxy-d-galactose ((18)F-FDGal) is a suitable PET tracer for measuring hepatic galactokinase capacity in vivo, which provides estimates of hepatic metabolic function. As a result of a higher affinity of galactokinase toward galactose, the lumped constant (LC) for (18)F-FDGal was 0.13 in healthy subjects. The aim of the present study was to test the hypothesis of a significantly different LC for (18)F-FDGal in patients with parenchymal liver disease. METHODS Nine patients with liver cirrhosis were studied in connection with a previous study with determination of hepatic intrinsic clearance of ¹⁸F-FDGal (V*(max/K*(m)). The present study determined the hepatic removal kinetics of galactose, including hepatic intrinsic clearance of galactose (V(max)/K(m)) from measurements of hepatic blood flow and arterial and liver vein blood galactose concentrations at increasing galactose infusions. LC for ¹⁸F-FDGal was calculated as (V*(max)/K*(m))/(V(max)/K(m)). On a second day, a dynamic ¹⁸-FDGal PET study with simultaneous infusion of galactose (mean arterial galactose concentration, 6.1 mmol/L of blood) and blood samples from a radial artery was performed, with determination of hepatic systemic clearance of ¹⁸F-FDGal (K*(+gal) from linear analysis of data (Gjedde-Patlak method). The maximum hepatic removal rate of galactose was estimated from ¹⁸F-FDGal PET data (V(max)(PET)) using the estimated LC. RESULTS The mean hepatic V(max) of galactose was 1.18 mmol/min, the mean K(m) was 0.91 mmol/L of blood and the mean V(max)/K(m) was 1.18 L of blood/min. When compared with values of healthy subjects, K(m) did not differ (P = 0.77), whereas both V(max) and V(max)/K(m) were significantly lower in patients (both P < 0.01). Mean LC for ¹⁸LF-FDGal was 0.24, which was significantly higher than the mean LC of 0.13 in healthy subjects (P < 0.0001). Mean K*(+gal) determined from the PET study was 0.019 L of blood/min/L of liver tissue, which was not significantly different from that in healthy subjects (P = 0.85). Mean hepatic V(max)(PET) was 0.57 mmol/min/L of liver tissue, which was significantly lower than the value in healthy subjects (1.41 mmol/min/L of liver tissue (P < 0.0001). CONCLUSION Disease may change the LC for a pet tracer, and this study demonstrated the importance of using the correct LC.
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Affiliation(s)
- Kasper S Mikkelsen
- Department of Nuclear Medicine and PET Centre, Aarhus University Hospital, Aarhus, Denmark
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Prabakaran T, Birn H, Bibby BM, Regeniter A, Sørensen SS, Feldt-Rasmussen U, Nielsen R, Christensen EI. Long-term enzyme replacement therapy is associated with reduced proteinuria and preserved proximal tubular function in women with Fabry disease. Nephrol Dial Transplant 2013; 29:619-25. [PMID: 24215016 DOI: 10.1093/ndt/gft452] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Fabry disease is an X-linked lysosomal storage disorder caused by mutations in the GLA gene. Deficiency of α-galactosidase A (α-Gal A) causes intracellular accumulations of globotriaosylceramide (GL-3) and related glycosphingolipids in all organs, including the kidney, often leading to end-stage renal failure. In women with Fabry disease, accumulation of GL-3 in the glomerular podocytes and other renal cells induces progressive, proteinuric nephropathy, but not as severe as in men. Enzyme replacement therapy (ERT) with recombinant α-Gal A reduces cellular GL-3 deposits in podocytes and tubular epithelial cells. We have previously shown that α-Gal A is delivered to these cells by different pathways involving different receptors. This study investigated the long-term changes in albuminuria, estimated glomerular filtration rate (eGFR) and urinary markers of both glomerular and tubular dysfunction in women with Fabry disease treated with ERT. METHODS A retrospective, single centre, cohort study evaluated the long-term association between ERT, albuminuria and eGFR in 13 women with Fabry disease and mild renal involvement. In particular, we analysed the changes in the proteinuric profile, including the glomerular marker IgG, the tubular markers α1-microglobulin and retinol-binding protein (RBP), and the shared tubular and glomerular markers albumin and transferrin. RESULTS ERT was associated with a significant reduction in albuminuria and a relatively stable eGFR. The decrease in albuminuria was paralleled by a decrease in both glomerular and tubular urine protein markers. CONCLUSIONS The data indicate that long-term ERT is associated with a reduction in albuminuria and glomerular and tubular urinary protein markers in women with Fabry disease and mild renal manifestations.
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Gejl M, Lerche S, Egefjord L, Brock B, Møller N, Vang K, Rodell AB, Bibby BM, Holst JJ, Rungby J, Gjedde A. Glucagon-like peptide-1 (GLP-1) raises blood-brain glucose transfer capacity and hexokinase activity in human brain. Front Neuroenergetics 2013; 5:2. [PMID: 23543638 PMCID: PMC3608902 DOI: 10.3389/fnene.2013.00002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 02/27/2013] [Indexed: 12/31/2022]
Abstract
In hyperglycemia, glucagon-like peptide-1 (GLP-1) lowers brain glucose concentration together with increased net blood-brain clearance and brain metabolism, but it is not known whether this effect depends on the prevailing plasma glucose (PG) concentration. In hypoglycemia, glucose depletion potentially impairs brain function. Here, we test the hypothesis that GLP-1 exacerbates the effect of hypoglycemia. To test the hypothesis, we determined glucose transport and consumption rates in seven healthy men in a randomized, double-blinded placebo-controlled cross-over experimental design. The acute effect of GLP-1 on glucose transfer in the brain was measured by positron emission tomography (PET) during a hypoglycemic clamp (3 mM plasma glucose) with (18)F-fluoro-2-deoxy-glucose (FDG) as tracer of glucose. In addition, we jointly analyzed cerebrometabolic effects of GLP-1 from the present hypoglycemia study and our previous hyperglycemia study to estimate the Michaelis-Menten constants of glucose transport and metabolism. The GLP-1 treatment lowered the vascular volume of brain tissue. Loading data from hypo- to hyperglycemia into the Michaelis-Menten equation, we found increased maximum phosphorylation velocity (V max) in the gray matter regions of cerebral cortex, thalamus, and cerebellum, as well as increased blood-brain glucose transport capacity (T max) in gray matter, white matter, cortex, thalamus, and cerebellum. In hypoglycemia, GLP-1 had no effects on net glucose metabolism, brain glucose concentration, or blood-brain glucose transport. Neither hexokinase nor transporter affinities varied significantly with treatment in any region. We conclude that GLP-1 changes blood-brain glucose transfer and brain glucose metabolic rates in a PG concentration-dependent manner. One consequence is that hypoglycemia eliminates these effects of GLP-1 on brain glucose homeostasis.
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Affiliation(s)
- Michael Gejl
- Department of Biomedicine - Pharmacology, Aarhus University Aarhus, Denmark
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Ravlo K, Chhoden T, Søndergaard P, Secher N, Keller AK, Pedersen M, Bibby BM, Jørgensen TM, Møldrup U, Ostraat EØ, Birn H, Nørregaard R, Marcussen N, Leuvenink HG, Jespersen B. Early outcome in renal transplantation from large donors to small and size-matched recipients - a porcine experimental model. Pediatr Transplant 2012; 16:599-606. [PMID: 22584014 DOI: 10.1111/j.1399-3046.2012.01707.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Kidney transplantation from a large donor to a small recipient, as in pediatric transplantation, is associated with an increased risk of thrombosis and DGF. We established a porcine model for renal transplantation from an adult donor to a small or size-matched recipient with a high risk of DGF and studied GFR, RPP using MRI, and markers of kidney injury within 10 h after transplantation. After induction of BD, kidneys were removed from ∼63-kg donors and kept in cold storage for ∼22 h until transplanted into small (∼15 kg, n = 8) or size-matched (n = 8) recipients. A reduction in GFR was observed in small recipients within 60 min after reperfusion. Interestingly, this was associated with a significant reduction in medullary RPP, while there was no significant change in the size-matched recipients. No difference was observed in urinary NGAL excretion between the groups. A significant higher level of HO-1 mRNA was observed in small recipients than in donors and size-matched recipients indicating cortical injury. Improvement in early graft perfusion may be a goal to improve short- and long-term GFR and avoid graft thrombosis in pediatric recipients.
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Affiliation(s)
- Kristian Ravlo
- Department of Nephrology Anaesthesiology, Aarhus University Hospital Institute of Clinical Medicine, The Netherlands
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Soendergaard P, Krogstrup NV, Secher NG, Ravlo K, Keller AK, Toennesen E, Bibby BM, Moldrup U, Ostraat EO, Pedersen M, Jorgensen TM, Leuvenink H, Norregaard R, Birn H, Marcussen N, Jespersen B. Improved GFR and renal plasma perfusion following remote ischaemic conditioning in a porcine kidney transplantation model. Transpl Int 2012; 25:1002-12. [DOI: 10.1111/j.1432-2277.2012.01522.x] [Citation(s) in RCA: 33] [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: 12/22/2022]
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Gejl M, Søndergaard HM, Stecher C, Bibby BM, Møller N, Bøtker HE, Hansen SB, Gjedde A, Rungby J, Brock B. Exenatide alters myocardial glucose transport and uptake depending on insulin resistance and increases myocardial blood flow in patients with type 2 diabetes. J Clin Endocrinol Metab 2012; 97:E1165-9. [PMID: 22544917 DOI: 10.1210/jc.2011-3456] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [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] [Indexed: 11/19/2022]
Abstract
CONTEXT Glucagon-like peptide-1 (GLP-1) and GLP-1 receptor agonists provide beneficial cardiovascular effects by protecting against ischemia and reperfusion injury. Type 2 diabetes mellitus patients have reduced glycolysis in the heart. OBJECTIVE We hypothesized that cardioprotection by GLP-1 is achieved through increased glucose availability and utilization and aimed to assess the effect of exenatide, a synthetic GLP-1 receptor agonist, on myocardial glucose uptake (MGU), myocardial glucose transport, and myocardial blood flow (MBF). DESIGN AND METHODS We conducted a randomized, double-blinded, placebo-controlled crossover study in eight male, insulin-naive, type 2 diabetes mellitus patients without coronary artery disease. Positron emission tomography was used to determine the effect of exenatide on MGU and MBF during a pituitary-pancreatic hyperglycemic clamp with (18)F-fluorodeoxyglucose and (13)N-ammonia as tracers. RESULTS Overall, exenatide did not alter MGU. However, regression analysis revealed that exenatide altered initial clearance of glucose over the membrane of cardiomyocytes and MGU, depending on the level of insulin resistance (P = 0.017 and 0.010, respectively). Exenatide increased MBF from 0.73 ± 0.094 to 0.85 ± 0.091 ml/g · min (P = 0.0056). Except for an increase in C-peptide levels, no differences in circulating hormones or metabolites were found. CONCLUSIONS The action of exenatide as an activator or inhibitor of the glucose transport and glucose uptake in cardiomyocytes is dependent on baseline activity of glucose transport and insulin resistance. Exenatide increases MBF without changing MGU.
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Affiliation(s)
- M Gejl
- Department of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, DK-8000 Aarhus C, Denmark
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Parkner T, Sørensen LP, Nielsen AR, Fischer CP, Bibby BM, Nielsen S, Pedersen BK, Møller HJ. Soluble CD163: a biomarker linking macrophages and insulin resistance. Diabetologia 2012; 55:1856-62. [PMID: 22450890 DOI: 10.1007/s00125-012-2533-1] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [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: 12/23/2011] [Accepted: 02/22/2012] [Indexed: 12/16/2022]
Abstract
AIMS/HYPOTHESIS Soluble CD163 (sCD163) was recently identified as a strong risk marker for developing type 2 diabetes. We hypothesised that sCD163 independently associates with insulin resistance. METHODS This cross-sectional study includes 234 participants: 96 with type 2 diabetes, 34 with impaired glucose tolerance (IGT) and 104 with normal glucose tolerance (NGT), matched for sex and BMI. Glucose-lowering medication was paused for 1 week before plasma samples were obtained for determination of sCD163 and other inflammatory and metabolic variables. Insulin resistance was estimated by homeostasis model assessment of insulin resistance (HOMA-IR). RESULTS Concentrations of sCD163 were 1.95 mg/l (0.63-6.97) in individuals with type 2 diabetes, 1.64 mg/l (0.58-4.19) in those with IGT, and 1.48 mg/l (0.48-4.11) (median [range]) in those with NGT (p < 0.0001). In univariate analyses, sCD163 correlated significantly with HOMA-IR (R = 0.44), insulin (R = 0.41), glucose (R = 0.30), triacylglycerol (R = 0.29) and HDL-cholesterol (R = -0.34) (all p < 0.0001). All but glucose remained significant when adjusting for age, sex, BMI and glycaemic group. In univariate regression analyses, HOMA-IR was associated with sCD163, C-reactive protein (CRP), TNF-α and IL-6 (all p ≤ 0.0001). An increase of 50% in sCD163 resulted in an estimated increase in HOMA-IR of 36% (95% CI 26, 48; p < 0.0001). In multiple linear regression analyses, sCD163 (p = 0.001) and CRP (p = 0.01) remained independent predictors of HOMA-IR, whereas TNF-α and IL-6 did not. CONCLUSIONS/INTERPRETATION Macrophage-specific sCD163 was strongly associated with insulin resistance independently of TNF-α and other predictors. Moreover, sCD163 was associated with well-known variables of the metabolic syndrome.
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MESH Headings
- Adult
- Aged
- Antigens, CD/blood
- Antigens, CD/metabolism
- Antigens, Differentiation, Myelomonocytic/blood
- Antigens, Differentiation, Myelomonocytic/metabolism
- Case-Control Studies
- Cross-Sectional Studies
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/metabolism
- Female
- Glucose Intolerance/blood
- Glucose Intolerance/metabolism
- Glucose Tolerance Test
- Humans
- Insulin Resistance/physiology
- Interleukin-6/blood
- Macrophages/metabolism
- Male
- Middle Aged
- Receptors, Cell Surface/blood
- Receptors, Cell Surface/metabolism
- Tumor Necrosis Factor-alpha/blood
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Affiliation(s)
- T Parkner
- Department of Clinical Biochemistry, Aarhus University Hospital, Norrebrogade 44, 8000, Aarhus C, Denmark.
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Munk K, Andersen NH, Terkelsen CJ, Bibby BM, Johnsen SP, Bøtker HE, Nielsen TT, Poulsen SH. Global left ventricular longitudinal systolic strain for early risk assessment in patients with acute myocardial infarction treated with primary percutaneous intervention. J Am Soc Echocardiogr 2012; 25:644-51. [PMID: 22406163 DOI: 10.1016/j.echo.2012.02.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [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] [Received: 02/07/2011] [Indexed: 12/15/2022]
Abstract
BACKGROUND Left ventricular systolic function is a key determinant of outcome after ST-segment elevation myocardial infarction (STEMI). The aim of this study was to study speckle-tracking global longitudinal strain (GLS) for early risk evaluation in STEMI and compare it with left ventricular ejection fraction (LVEF), wall motion score index (WMSI), and end-systolic volume index (ESVI). METHODS Five-hundred seventy-six patients underwent echocardiography ≤24 hours after primary percutaneous coronary intervention for STEMI. The end point was the composite of death, hospitalization with reinfarction, congestive heart failure, or stroke. Associations with outcome were assessed by multivariate Cox regression with adjustment for clinical parameters. Hazard ratios (HRs) for events within the first year are reported per absolute percentage GLS increase. RESULTS During a median follow-up period of 24 months, 162 patients experienced at least one event. GLS was associated with the composite end point (adjusted HR, 1.20; 95% confidence interval [CI], 1.12-1.29) and also when controlling for LVEF (adjusted HR, 1.17; 95% CI, 1.07-1.29) and ESVI (adjusted HR, 1.18; 95% CI, 1.08-1.28). Although WMSI was significantly associated with outcome beyond any association accounted for by GLS, a borderline significant association was found after controlling for WMSI (adjusted HR for GLS, 1.10; 95% CI, 1.00-1.21). When GLS or WMSI was known, there was no significant association between LVEF or ESVI and outcome. CONCLUSIONS In a large population of patients with STEMI, GLS and WMSI were comparable and both superior for early risk assessment compared with volume-based left ventricular function indicators such as LVEF and ESVI. Compared with WMSI, the advantage of GLS is the provision of a semiautomated quantitative measure.
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Affiliation(s)
- Kim Munk
- Department of Cardiology, Aarhus University Hospital Skejby, Aarhus, Denmark.
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Fisker AB, Aaby P, Bale C, Balde I, Biering-Sørensen S, Agergaard J, Martins C, Bibby BM, Benn CS. Does the effect of vitamin A supplements depend on vaccination status? An observational study from Guinea-Bissau. BMJ Open 2012; 2:e000448. [PMID: 22240648 PMCID: PMC3278485 DOI: 10.1136/bmjopen-2011-000448] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Objective Vitamin A supplementation (VAS) is estimated to reduce all-cause mortality by 24%. Previous studies indicate that the effect of VAS may vary with vaccination status. The authors evaluated the effect of VAS provided in campaigns on child survival overall and by sex and vaccination status at the time of supplementation. Design Observational cohort study. Setting and participants The study was conducted in the urban study area of the Bandim Health Project in Guinea-Bissau. The authors documented participation or non-participation in two national vitamin A campaigns in December 2007 and July 2008 for children between 6 and 35 months of age. Vaccination status was ascertained by inspection of vaccination cards. All children were followed prospectively. Outcome measures Mortality rates for supplemented and non-supplemented children were compared in Cox models providing mortality rate ratios (MRRs). Results The authors obtained information from 93% of 5567 children in 2007 and 90% of 5799 children in 2008. The VAS coverage was 58% in 2007 and 68% in 2008. Mortality in the supplemented group was 1.5% (44 deaths/2873 person-years) and 1.6% (20 deaths/1260 person-years) in the non-supplemented group (adjusted MRR=0.78 (0.46; 1.34)). The effect was similar in boys and girls. Vaccination cards were seen for 86% in 2007 and 84% in 2008. The effect of VAS in children who had measles vaccine as their last vaccine (2814 children, adjusted MRR=0.34 (0.14; 0.85)) differed from the effect in children who had diphtheria-tetanus-pertussis vaccine as their last vaccine (3680 children, adjusted MRR=1.29 (0.52; 3.22), p=0.04 for interaction). Conclusion The effect of VAS differed by most recent vaccination, being beneficial after measles vaccine but not after diphtheria-tetanus-pertussis vaccine.
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Affiliation(s)
- Ane B Fisker
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Bandim Health Project, Statens Serum Institut, Copenhagen S, Denmark
- Department of Biostatistics, Institute of Public Health, University of Aarhus, Aarhus, Denmark
| | - Peter Aaby
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Bandim Health Project, Statens Serum Institut, Copenhagen S, Denmark
| | - Carlito Bale
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | - Ibraima Balde
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | - Sofie Biering-Sørensen
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Bandim Health Project, Statens Serum Institut, Copenhagen S, Denmark
| | - Jane Agergaard
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Department of Infectious Diseases, Aarhus University Hospital, Skejby Sygehus, Aarhus, Denmark
| | - Cesario Martins
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
| | - Bo M Bibby
- Department of Biostatistics, Institute of Public Health, University of Aarhus, Aarhus, Denmark
| | - Christine S Benn
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau
- Bandim Health Project, Statens Serum Institut, Copenhagen S, Denmark
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Lilleholt LL, Johansen C, Arthur JS, Funding A, Bibby BM, Kragballe K, Iversen L. Role of p38 mitogen-activated protein kinase isoforms in murine skin inflammation induced by 12-O-tetradecanoylphorbol 13-acetate. Acta Derm Venereol 2011; 91:271-8. [PMID: 21336470 DOI: 10.2340/00015555-1046] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
p38 mitogen-activated protein kinase plays a pivotal role in skin inflammation. The purpose of this study was to investigate the role of the various p38 isoforms. p38β/δ-knockout-C57BL/6 mice were generated, studied in a 12-O-tetradecanoylphorbol 13-acetate (TPA)-induced skin inflammation model and compared with wild-type mice. The inflammatory response was determined by ear thickness, myeloperoxidase activity and histology. mRNA and protein expression of interleukin (IL)-1β and IL-6 was determined by quantitative real-time reverse transcription PCR and enzyme-linked immunoassay. In both groups application of TPA resulted in a significant increase in inflammation, and pretreatment with the p38α/β inhibitor, SB202190 resulted in a significant inhibition. A significantly slower onset but prolonged duration of the response was seen in p38β/δ knockout mice. This was paralleled by a significant, but transient, lower IL-1β and IL-6 protein expression in p38β/δ knockout mice. Although the p38α isoform is important, our data also demonstrate an important role of the p38β and/or δ isoforms in the regulation of TPA-induced skin inflammation.
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Abstract
OBJECTIVES To evaluate if an improved daily glycemic profile could be achieved in patients with type 2 diabetes by withholding breakfast, but maintaining the same total daily intake of calorie and the same composition of carbohydrates, fat and protein. METHODS Thirteen type 2 diabetic patients participated in this randomized crossover study. Following an initial fasting night the study consisted of 4 consecutive days. Patients were randomized to diets including breakfast days 1 and 3, and excluding breakfast days 2 and 4, or vice versa. RESULTS The mean plasma glucose level was 0.24 mmol/l higher after the breakfast diet compared with the non-breakfast diet, but reflected only a tendency (P=0.066). The standard deviation based on plasma glucose was 32% higher after the breakfast diet compared with the non-breakfast diet (P<0.0001). CONCLUSIONS Not all patients with type 2 diabetes may need breakfast. Moreover, a non-breakfast diet reduces glycemic variability.
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Affiliation(s)
- T Parkner
- Department of Endocrinology and Diabetes, Aarhus University Hospital, Denmark.
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Bünger MH, Oxlund H, Hansen TK, Sørensen S, Bibby BM, Thomsen JS, Langdahl BL, Besenbacher F, Pedersen JS, Birkedal H. Strontium and bone nanostructure in normal and ovariectomized rats investigated by scanning small-angle X-ray scattering. Calcif Tissue Int 2010; 86:294-306. [PMID: 20221590 DOI: 10.1007/s00223-010-9341-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [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: 02/11/2009] [Accepted: 02/02/2010] [Indexed: 11/29/2022]
Abstract
The effect of SrCl(2) treatment on bone nanostructure in a rat ovariectomy model was studied using scanning small-angle X-ray scattering (sSAXS). Twelve 6-month-old female Wistar rats were used. Six animals were ovariectomized (+ovx) and six were left intact after sham surgery (-ovx). Six animals, three +ovx and three -ovx, were treated with 4 mmol SrCl(2) (aq)/kg/day (+Sr), whereas the remaining six received placebo (-Sr) for 140 days. Rats were labeled with flourochromes at days 7, 126, and 136. Femoral cross sections were studied using fluorescence microscopy, scanning electron microscopy including energy-dispersive X-ray analysis, and sSAXS. The SAXS data comprised about 5,500 measurements and provided information about mineral crystal thickness and orientation in new and old bone. The newly formed bone contained higher levels of Sr(2+) in +Sr than in -Sr animals, indicating that the Sr(2+) was incorporated into the new bone. Mineral plates were significantly thicker in old bone, 2.62 nm (95% CI 2.58-2.66), than in new bone, 2.41 nm (95% CI 2.36-2.46). Surprisingly, mineral plates in new bone were significantly thicker (2.52 [95% CI 2.47-2.57] nm vs. 2.41 [95% CI 2.36-2.46] nm, P = 0.017) in +ovx rats than in -ovx rats. However, no significant effect of SrCl(2) on mineral plate thicknesses in new bone was observed. The statistical model yielded estimates of the difference in bone mineral plate thickness induced by Sr. The estimated effect of Sr was -0.09 (95% CI -0.21 to 0.03) and 0.02 (95% CI -0.10 to 0.14) nm for new bone in -ovx and +ovx rats, respectively.
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Affiliation(s)
- Mathias H Bünger
- Department of Endocrinology and Metabolism C, Aarhus University Hospital, Arhus, Denmark.
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Nielsen SS, Toft N, Jørgensen E, Bibby BM. Bayesian mixture models for within-herd prevalence estimates of bovine paratuberculosis based on a continuous ELISA response. Prev Vet Med 2007; 81:290-305. [PMID: 17574284 DOI: 10.1016/j.prevetmed.2007.05.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [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: 08/02/2006] [Revised: 05/08/2007] [Accepted: 05/21/2007] [Indexed: 11/27/2022]
Abstract
Diagnostic inference by use of assays such as ELISA is usually done by dichotomizing the optical density (OD)-values based on a predetermined cut-off. For paratuberculosis, a slowly developing infection in cattle and other ruminants, it is known that laboratory factors as well as animal specific covariates influence the OD-value, but while laboratory factors are adjusted for, the animal specific covariates are seldom utilized when establishing cut-offs. Furthermore, when dichotomizing an OD-value, information is lost. Considering the poor diagnostic performance of ELISAs for diagnosis of paratuberculosis, a framework for utilizing the continuous OD-values as well as known coavariates could be useful in addition to the traditional approaches, e.g. for estimating within-herd prevalences. The objective of this study was to develop a Bayesian mixture model with two components describing the continuous OD response of infected and non-infected cows, while adjusting for known covariates. Based on this model, four different within-herd prevalence indicators were considered: the mean prevalence in the herd; the age adjusted prevalence of the herd for better between-herd comparisons; the rank of the age adjusted prevalence to better compare across time; and a threshold-based prevalence to describe differences between herds. For comparison, the within-herd prevalence and associated rank using a traditional dichotomization approach based on a single cut-off for an OD corrected for laboratory variation was estimated in a Bayesian model with priors for sensitivity and specificity. The models were applied to the OD-values of a milk ELISA using samples from all lactating cows in 100 Danish dairy herds in three sampling rounds 13 months apart. The results of the comparison showed that including covariates in the mixture model reduced the uncertainty of the prevalence estimates compared to the cut-off based estimates. This allowed a more informative ranking of the herds where low ranking and high ranking herds were easier to identify.
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Affiliation(s)
- S S Nielsen
- Department of Large Animal Sciences, Faculty of Life Sciences, University of Copenhagen, Grønnegårdsvej 8, DK-1870 Frederiksberg C, Denmark.
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Fisker AB, Lisse IM, Aaby P, Erhardt JG, Rodrigues A, Bibby BM, Benn CS. Effect of vitamin A supplementation with BCG vaccine at birth on vitamin A status at 6 wk and 4 mo of age. Am J Clin Nutr 2007; 86:1032-9. [PMID: 17921381 DOI: 10.1093/ajcn/86.4.1032] [Citation(s) in RCA: 33] [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] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The effect of vitamin A supplementation (VAS) at birth on subsequent vitamin A status has not been studied. OBJECTIVE The objective was to study the effect of 50,000 IU vitamin A administered with BCG vaccine at birth on vitamin A status in both sexes. DESIGN Within a randomized placebo-controlled trial of VAS, we obtained blood from 614 children at 6 wk of age and from 369 mother-infant pairs at 4 mo of age. We assessed vitamin A status on the basis of serum retinol-binding protein (RBP) and measured serum C-reactive protein to monitor for concurrent infections. RESULTS RBP concentrations indicated vitamin A deficiency in 32% of the children at age 6 wk and in 16% at age 4 mo. VAS was not associated with higher RBP concentrations overall or in either sex. However, the effect of VAS varied with maternal education (P for interaction = 0.004): At age 6 wk, VAS was associated with higher (9%; 95% CI: 2, 17%) RBP concentrations in children of noneducated mothers but not in children of educated mothers. Overall, RBP concentrations increased between 6 wk and 4 mo of age. The increase correlated inversely with the number of diphtheria-tetanus-pertussis (DTP) vaccines received in the interval (P = 0.009), particularly in girls (P for interaction = 0.01) and in vitamin A recipients (P = 0.01). CONCLUSIONS Overall, VAS at birth had no effect on vitamin A status. However VAS may temporarily improve vitamin A status in the subgroup of children of noneducated mothers. In vitamin A recipients, subsequent DTP vaccines affected vitamin A status negatively. The main trial was registered at clinicaltrials.gov as NCT00168597.
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Affiliation(s)
- Ane B Fisker
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau.
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Abstract
PNMT (phenylethanolamine-N-methyl-transferase) is the enzyme that catalyzes the formation of epinephrine from norepinephrine. In transgenic mice over-expressing PNMT, observations revealed a very high level of aggression compared to their background strain, C57BL/6J. To evaluate the influence of PNMT on aggression and emotionality in this transgenic line, single-sex male and female groups were independently established that consisted of either four wild-type mice or four transgenic mice overexpressing PNMT. The members of each group were littermates. Mixed single-sex groups consisting of two transgenic mice and two wild-type mice were also established. Almost no fights were observed within the female groups. In males, the transgenic line showed a significantly higher level of fighting than controls (p=0.007) and mixed male groups (p=0.02). Housing mice from the transgenic line in mixed groups with wild-type mice seems to decrease the level of aggression in the transgenic line. In conclusion, this is the first study to demonstrate a clear, significant increase in aggression arising from PNMT overexpression. This suggests an important role for central epinephrine levels in aggressive behavior.
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Affiliation(s)
- D B Sørensen
- The Royal Veterinary and Agricultural University of Copenhagen, Division of Laboratory Animal Science and Welfare, Department of Veterinary Pathobiology, Frederiksberg, Denmark.
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Agerbirk N, Olsen CE, Bibby BM, Frandsen HO, Brown LD, Nielsen JK, Renwick JAA. A saponin correlated with variable resistance of Barbarea vulgaris to the diamondback moth Plutella xylostella. J Chem Ecol 2003; 29:1417-33. [PMID: 12918925 DOI: 10.1023/a:1024217504445] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Two types of Barbarea vulgaris var. arcuata, the G-type and the P-type, differed in resistance to larvae of the diamondback moth (DBM) Platella xylostella. Rosette plants of the G-type were fully resistant to the DBM when grown in a greenhouse or collected in the summer season, but leaves collected during the late fall were less resistant, as previously found for flea beetle resistance. The P-type was always susceptible. Extracts of resistant leaflets inhibited larval growth in a bioassay, and a growth-inhibiting fraction was isolated by activity-guided fractionation. A triterpenoid saponin (1) was isolated from this fraction and identified as 3-O-beta-cellobiosyloleanolic acid from spectroscopic data and analysis of hydrolysis products. The decrease in resistance of the G-type in the fall was correlated with a decrease in the level of 1, from 0.6-0.9 to < 0.2 micromol/g dry wt. Compound 1 was not detected in the susceptible P-type. We conclude that 1 is correlated with the variable resistance of B. vulgaris foliage to the DBM.
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Affiliation(s)
- Niels Agerbirk
- Chemistry Department, Royal Veterinary and Agricultural University Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark.
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Viuff D, Hendriksen PJ, Vos PL, Dieleman SJ, Bibby BM, Greve T, Hyttel P, Thomsen PD. Chromosomal abnormalities and developmental kinetics in in vivo-developed cattle embryos at days 2 to 5 after ovulation. Biol Reprod 2001; 65:204-8. [PMID: 11420241 DOI: 10.1095/biolreprod65.1.204] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The frequency of chromosome abnormalities was investigated in cattle embryos (n = 256) derived from superovulated heifers (n = 35) on Days 2, 3, 4, and 5 postovulation (PO). Interphase nuclei (n = 4358) were analyzed for chromosome abnormalities using fluorescent in situ hybridization with chromosome 6- and chromosome 7-specific probes and the developmental rate was described by scoring cell numbers. We found that 93%, 85%, 84%, and 69% of the embryos from Days 2, 3, 4, and 5 PO, respectively, displayed a normal diploid chromosome number in all cells. Of the embryos containing abnormal cells, mixoploidy was significantly more frequent than polyploidy. The percentage of mixoploidy at Days 2, 3, 4, and 5 PO was 5%, 13%, 16%, and 31%, respectively, whereas the percentages of polyploidy were 2%, 2%, 0%, and 0%, respectively. The mean number of cells per embryo was 4.7, 8, 11.5, and 48.3, respectively, at Days 2, 3, 4, and 5 PO. Thus, in vivo-developed embryos were significantly more advanced than the in vitro-produced (IVP) embryos except for Day 2. In conclusion, a significantly lower frequency of chromosomally abnormal embryos, in particular displaying polyploidy early after fertilization, was seen in in vivo versus IVP embryos, and these chromosomal abnormalities may be inherent to the process of IVP in cattle.
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Affiliation(s)
- D Viuff
- Department of Clinical Studies, Royal Veterinary and Agricultural University, 1870 Frederiksberg C, Denmark.
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Buemann B, Schierning B, Toubro S, Bibby BM, Sørensen T, Dalgaard L, Pedersen O, Astrup A. The association between the val/ala-55 polymorphism of the uncoupling protein 2 gene and exercise efficiency. Int J Obes (Lond) 2001; 25:467-71. [PMID: 11319648 DOI: 10.1038/sj.ijo.0801564] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.7] [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: 06/23/2000] [Revised: 10/18/2000] [Accepted: 11/02/2000] [Indexed: 11/09/2022]
Abstract
BACKGROUND Energy expenditure may partly be determined by genetic variations in uncoupling proteins. We have previously found an increased physical activity but a similar 24-h energy expenditure (EE) in subjects with the val/val-55 UCP2 genotype compared to those with the ala/ala genotype which indicates that the val-55 allele is statistically associated with a higher metabolic efficiency. DESIGN EE during bicycling was determined by indirect calorimetry at three different loads (30, 40 and 60% of VO2max in eight subjects with the val/val-55 genotype (35+/-6 y weight=76.8+/-13.6 kg, VO2max=2.79+/-0.71 l/min) and eight subjects with the ala/ala-55 genotype (37+/-3 y, weight=78.3+/-16.5 kg, VO2max=2.66+/-0.41 l/min). RESULTS Incremental exercise efficiency across the three different work levels was higher in the val/val (25.3%, c.i. 24.2-26.4%) than in the ala/ala (23.6%, c.i. 22.5-24.7%) genotype P<0.05. Gross exercise efficiency at 40% VO2max was higher in the val/val (15.3+/-0.6%) than in the ala/ala (13.5+/-0.4%) group. CONCLUSION As the val/ala-55 polymorphism is located in a domain of the protein without any known function, the different exercise efficiency between the two genotypes most likely reflects a linkage disequilibrium with a functionally significant polymorphism in UCP2 or in the neighbouring UCP3 gene. The study suggests that variations in the UCP genes may affect not only basal metabolic rate but also influence energy costs of exercise.
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Affiliation(s)
- B Buemann
- Research Department of Human Nutrition, The Royal Veterinary and Agricultural University, Frederiksberg, Denmark.
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Abstract
D-Fructose has been found to increase uric acid production by accelerating the degradation of purine nucleotides, probably due to hepatocellular depletion of inorganic phosphate (Pi) by an accumulation of ketohexose-1-phosphate. The hyperuricemic effect of D-tagatose, a stereoisomer of D-fructose, may be greater than that of D-fructose, as the subsequent degradation of D-tagatose-1-phosphate is slower than the degradation of D-fructose-1-phosphate. We tested the effect of 30 g oral D-tagatose versus D-fructose on plasma uric acid and other metabolic parameters in 8 male subjects by a double-blind crossover design. Both the peak concentration and 4-hour area under the curve (AUC) of serum uric acid were significantly higher after D-tagatose compared with either 30 g D-fructose or plain water. The decline in serum Pi concentration was greater at 50 minutes after D-tagatose versus D-fructose. The thermogenic and lactacidemic responses to D-tagatose were blunted compared with D-fructose. D-Tagatose attenuated the glycemic and insulinemic responses to a meal that was consumed 255 minutes after its administration. Moreover, both fructose and D-tagatose increased plasma concentrations of cholecystokinin (CCK) and glucagon-like peptide-1 (GLP-1). The metabolic effects of D-tagatose occurred despite its putative poor absorption.
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Affiliation(s)
- B Buemann
- Research Department of Human Nutrition, The Royal Veterinary and Agricultural University, Frederiksberg, Denmark
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