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Willame C, Dodd C, Durán CE, Elbers RJHJ, Gini R, Bartolini C, Paoletti O, Wang L, Ehrenstein V, Kahlert J, Haug U, Schink T, Diez-Domingo J, Mira-Iglesias A, Carreras JJ, Vergara-Hernández C, Giaquinto C, Barbieri E, Stona L, Huerta C, Martín-Pérez M, García-Poza P, de Burgos A, Martínez-González M, Bryant V, Villalobos F, Pallejà-Millán M, Aragón M, Carreras JJ, Souverein P, Thurin NH, Weibel D, Klungel OH, Sturkenboom MCJM. Background rates of 41 adverse events of special interest for COVID-19 vaccines in 10 European healthcare databases - an ACCESS cohort study. Vaccine 2023; 41:251-262. [PMID: 36446653 PMCID: PMC9678835 DOI: 10.1016/j.vaccine.2022.11.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND In May 2020, the ACCESS (The vACCine covid-19 monitoring readinESS) project was launched to prepare real-world monitoring of COVID-19 vaccines. Within this project, this study aimed to generate background incidence rates of 41 adverse events of special interest (AESI) to contextualize potential safety signals detected following administration of COVID-19 vaccines. METHODS A dynamic cohort study was conducted using a distributed data network of 10 healthcare databases from 7 European countries (Italy, Spain, Denmark, The Netherlands, Germany, France and United Kingdom) over the period 2017 to 2020. A common protocol (EUPAS37273), common data model, and common analytics programs were applied for syntactic, semantic and analytical harmonization. Incidence rates (IR) for each AESI and each database were calculated by age and sex by dividing the number of incident cases by the total person-time at risk. Age-standardized rates were pooled using random effect models according to the provenance of the events. FINDINGS A total number of 63,456,074 individuals were included in the study, contributing to 211.7 million person-years. A clear age pattern was observed for most AESIs, rates also varied by provenance of disease diagnosis (primary care, specialist care). Thrombosis with thrombocytopenia rates were extremely low ranging from 0.06 to 4.53/100,000 person-years for cerebral venous sinus thrombosis (CVST) with thrombocytopenia (TP) and mixed venous and arterial thrombosis with TP, respectively. INTERPRETATION Given the nature of the AESIs and the setting (general practitioners or hospital-based databases or both), background rates from databases that show the highest level of completeness (primary care and specialist care) should be preferred, others can be used for sensitivity. The study was designed to ensure representativeness to the European population and generalizability of the background incidence rates. FUNDING The project has received support from the European Medicines Agency under the Framework service contract nr EMA/2018/28/PE.
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Affiliation(s)
- C Willame
- Department of Datascience & Biostatistics, University Medical Center Utrecht, Heidelberglaan 100, the Netherlands
| | - C Dodd
- Department of Datascience & Biostatistics, University Medical Center Utrecht, Heidelberglaan 100, the Netherlands
| | - CE Durán
- Department of Datascience & Biostatistics, University Medical Center Utrecht, Heidelberglaan 100, the Netherlands
| | - RJHJ Elbers
- Department of Data science & Biostatistic, Data manegement, University Medical Center Utrecht, Heidelberglaan 100, the Netherlands
| | - R Gini
- Agenzia regionale di sanità della Toscana, via Pietro Dazzi 1, 55100 Florence, Italy
| | - C Bartolini
- Agenzia regionale di sanità della Toscana, via Pietro Dazzi 1, 55100 Florence, Italy
| | - O Paoletti
- Agenzia regionale di sanità della Toscana, via Pietro Dazzi 1, 55100 Florence, Italy
| | - L Wang
- Department of Clinical Epidemiology, Aarhus University Hospital, Denmark
| | - V Ehrenstein
- Department of Clinical Epidemiology, Aarhus University Hospital, Denmark
| | - J Kahlert
- Department of Clinical Epidemiology, Aarhus University Hospital, Denmark
| | - U Haug
- Department of Clinical Epidemiology, Leibniz Institute for Prevention Research and Epidemiology – BIPS, Faculty of Human and Health Sciences, University of Bremen, Germany
| | - T Schink
- Department of Clinical Epidemiology, Leibniz Institute for Prevention Research and Epidemiology – BIPS, 28359 Bremen, Germany
| | - J Diez-Domingo
- Vaccine Research Department, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO – Public Health), Avenida Cataluña, 21, 46020 Valencia, Spain
| | - A Mira-Iglesias
- Vaccine Research Department, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO – Public Health), Avenida Cataluña, 21, 46020 Valencia, Spain
| | - JJ Carreras
- Vaccine Research Department, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO – Public Health), Avenida Cataluña, 21, 46020 Valencia, Spain
| | - C Vergara-Hernández
- Vaccine Research Department, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO – Public Health), Avenida Cataluña, 21, 46020 Valencia, Spain
| | - C Giaquinto
- Division of Paediatric Infectious Diseases, Department of Women’s and Children’s Health, University of Padova, Padova, Italy
| | - E Barbieri
- Division of Paediatric Infectious Diseases, Department of Women’s and Children’s Health, University of Padova, Padova, Italy
| | - L Stona
- Fondazione Penta ONLUS, Corso Stati Uniti 4, 35127 Padova, Italy
| | - C Huerta
- Department of Public Health and Maternal and Child Health, Faculty of Medicine, Complutense University of Madrid, 28040 Madrid, Spain
| | - M Martín-Pérez
- Pharmacoepidemiology and Pharmacovigilance Division, Medicines for Human Use Department, Spanish Agency for Medicines and Medical Devices (AEMPS), Calle Campezo 1, 28022 Madrid, Spain
| | - P García-Poza
- Pharmacoepidemiology and Pharmacovigilance Division, Medicines for Human Use Department, Spanish Agency for Medicines and Medical Devices (AEMPS), Calle Campezo 1, 28022 Madrid, Spain
| | - A de Burgos
- Pharmacoepidemiology and Pharmacovigilance Division, Medicines for Human Use Department, Spanish Agency for Medicines and Medical Devices (AEMPS), Calle Campezo 1, 28022 Madrid, Spain
| | - M Martínez-González
- Pharmacoepidemiology and Pharmacovigilance Division, Medicines for Human Use Department, Spanish Agency for Medicines and Medical Devices (AEMPS), Calle Campezo 1, 28022 Madrid, Spain
| | - V Bryant
- Pharmacoepidemiology and Pharmacovigilance Division, Medicines for Human Use Department, Spanish Agency for Medicines and Medical Devices (AEMPS), Calle Campezo 1, 28022 Madrid, Spain
| | - F Villalobos
- Unitat de Suport a la Recerca Tarragona-Reus, Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), 43202 Reus, Spain
| | - M Pallejà-Millán
- Unitat de Suport a la Recerca Tarragona-Reus, Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), 43202 Reus, Spain
| | - M Aragón
- Fundació Institut Universitari per a la recerca a l’Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), 08007 Barcelona, Spain
| | - JJ Carreras
- Vaccine Research Department, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO – Public Health), Avenida Cataluña, 21, 46020 Valencia, Spain
| | - P Souverein
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, PO BOX 80082, 3508 TB Utrecht, the Netherlands
| | - NH Thurin
- INSERM CIC-P1401, Bordeaux PharmacoEpi, Univ. Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux cedex, France
| | - D Weibel
- Department of Datascience & Biostatistics, University Medical Center Utrecht, Heidelberglaan 100, the Netherlands
| | - OH Klungel
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, PO BOX 80082, 3508 TB Utrecht, the Netherlands
| | - MCJM Sturkenboom
- Department of Datascience & Biostatistics, University Medical Center Utrecht, Heidelberglaan 100, the Netherlands,Corresponding author at: Department Datascience & Biostatistics Univerisity Medical Center Utrecht, Heidelberglaan 100, The Netherlands
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Birkebaek NH, Kahlert J, Bjarnason R, Drivvoll AK, Johansen A, Konradsdottir E, Pundziute-Lyckå A, Samuelsson U, Skrivarhaug T, Svensson J. Body mass index standard deviation score and obesity in children with type 1 diabetes in the Nordic countries. HbA 1c and other predictors of increasing BMISDS. Pediatr Diabetes 2018; 19:1198-1205. [PMID: 29781227 DOI: 10.1111/pedi.12693] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 03/30/2018] [Accepted: 04/30/2018] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Intensified insulin therapy may increase body weight and cause obesity. This study compared body mass index standard deviation score (BMISDS) and obesity rate in children with type 1 diabetes (T1D) in Denmark, Iceland, Norway and Sweden, and uncovered predictors for increasing BMISDS. METHODS Data registered in the Nordic national childhood diabetes databases during the period 2008-2012 on children below 15 years with T1D for more than 3 months were compiled, including information on gender, age, diabetes duration, hemoglobin A1c (HbA1c ), insulin dose, severe hypoglycemia (SH), treatment modality, height and weight. The Swedish reference chart for BMI was used for calculating BMISDS. RESULTS Totally, 11 025 children (48% females) (30 994 registrations) were included. Medians by the last recorded examination were: age, 13.5 years; diabetes duration, 4.3 years; HbA1c , 7.9% (63 mmol/mol); insulin dose, 0.8 IU/kg/d and BMISDS, 0.70. Obesity rate was 18.5%. Adjusted mean BMISDS (BMISDS adj) was inversely related to HbA1c and directly to diabetes duration. Higher BMISDS adj was found in those with an insulin dose above 0.6 IU/kg/d, and in girls above 10 years. Pump users had higher BMISDS adj than pen users, and patients with registered SH had higher BMISDS adj than patients without SH (both P < .001). CONCLUSION Obesity rate in children with T1D in the Nordic countries is high, however, with country differences. Low HbA1c , long diabetes duration, higher insulin dose, pump treatment and experiencing a SH predicted higher BMISDS. Diabetes caregivers should balance the risk of obesity and the benefit of a very low HbA1c.
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Affiliation(s)
- N H Birkebaek
- Department of Paediatrics, Aarhus University Hospital, Aarhus University, Aarhus, Denmark
| | - J Kahlert
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - R Bjarnason
- Landspitali University Hospital, and Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - A K Drivvoll
- Division of Paediatrics and Adolescent Medicine, Oslo University Hospital, Oslo, Norway
| | - A Johansen
- Department of Growth and Reproduction, Rigshospitalet, Copenhagen, Denmark
| | - E Konradsdottir
- Landspitali University Hospital, and School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | | | - U Samuelsson
- Department of Pediatrics, Linköbing University Hospital, Linköping, Sweden
| | - T Skrivarhaug
- Division of Paediatrics and Adolescent Medicine, Oslo University Hospital, Oslo, Norway
| | - J Svensson
- Department of Paediatrics, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
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Narlawar R, Austin CJD, Kahlert J, Selleri S, Da Pozzo E, Martini C, Werry EL, Rendina LM, Kassiou M. Remarkable Enhancement in Boron Uptake Within Glioblastoma Cells With Carboranyl–Indole Carboxamides. Chem Asian J 2018; 13:3321-3327. [DOI: 10.1002/asia.201801175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/21/2018] [Indexed: 01/19/2023]
Affiliation(s)
| | | | - Jan Kahlert
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
| | - Silvia Selleri
- Department of Pharmaceutical Sciences The University of Florence Via U. Schiff 650019 Polo Scientifico Sesto Fiorentino Italy
| | - Eleonora Da Pozzo
- Department of Pharmacy The University of Pisa Via Bonanno 6 56127 Pisa Italy
| | - Claudia Martini
- Department of Pharmacy The University of Pisa Via Bonanno 6 56127 Pisa Italy
| | - Eryn L. Werry
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
| | - Louis M. Rendina
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
| | - Michael Kassiou
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
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Pedersen AB, Gammelager H, Kahlert J, Sørensen HT, Christiansen CF. Impact of body mass index on risk of acute kidney injury and mortality in elderly patients undergoing hip fracture surgery. Osteoporos Int 2017; 28:1087-1097. [PMID: 27866215 DOI: 10.1007/s00198-016-3836-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 11/07/2016] [Indexed: 12/01/2022]
Abstract
UNLABELLED The literature is limited regarding risk factors for acute kidney injury (AKI) and mortality in hip fracture patients, although AKI is common in these patients. While obese patients were at increased risk of AKI, underweight patients with and without AKI had elevated mortality for up to 1 year after hip fracture surgery, compared with normal-weight patients. INTRODUCTION This study aimed to examine risk of postoperative AKI and subsequent mortality, by body mass index (BMI) level, in hip fracture surgery patients aged 65 and over. METHODS A regional cohort study using medical databases was used. We included all patients who underwent surgery to repair a hip fracture during the years 2005-2011 (n = 13,529) at hospitals in Northern Denmark. We calculated cumulative risk of AKI by BMI level during 5 days postsurgery and subsequent short-term (6-30 days postsurgery) and long-term (31-365 days post-surgery) mortality. We calculated crude and adjusted hazard ratios (aHRs) for AKI and death with 95% confidence intervals (CIs), comparing underweight, overweight, and obese patients with normal-weight patients. RESULTS Risks of AKI within five postoperative days were 11.9, 10.1, 12.5, and 17.9% for normal-weight, underweight, overweight, and obese patients, respectively. Among those who developed AKI, short-term mortality was 14.1% for normal-weight patients compared to 23.1% for underweight (aHR 1.7 (95% CI 1.2-2.4)), 10.7% for overweight (aHR 0.9 (95% CI 0.6-1.1)), and 15.2% for obese (aHR 0.9 (95% CI 0.6-1.4)) patients. Long-term mortality was 24.5% for normal-weight, 43.8% for underweight (aHR 1.6 (95% CI 1.0-2.6)), 20.5% for overweight (aHR 0.8 (95% CI 0.6-1.2)), and 21.4% for obese (aHR 1.1 (95% CI 0.7-1.8) AKI patients. Similar associations between BMI and mortality were observed among patients without postoperative AKI, although the absolute mortality risk estimates by BMI were considerably lower in patients without than in those with AKI. CONCLUSIONS Obese patients were at increased risk of AKI compared with normal-weight patients. Among patients with and without postoperative AKI, overweight and obesity were not associated with mortality. Compared to normal-weight patients, underweight patients had elevated mortality for up to 1 year after hip fracture surgery irrespective of the presence of AKI. The absolute mortality risks were higher in all BMI groups with the presence of AKI.
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Affiliation(s)
- A B Pedersen
- Department of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Alle 43-45, 8200, Aarhus N, Denmark.
| | - H Gammelager
- Department of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Alle 43-45, 8200, Aarhus N, Denmark
| | - J Kahlert
- Department of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Alle 43-45, 8200, Aarhus N, Denmark
| | - H T Sørensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Alle 43-45, 8200, Aarhus N, Denmark
| | - C F Christiansen
- Department of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Alle 43-45, 8200, Aarhus N, Denmark
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Pedersen AB, Christiansen CF, Gammelager H, Kahlert J, Sørensen HT. Risk of acute renal failure and mortality after surgery for a fracture of the hip. Bone Joint J 2016; 98-B:1112-8. [DOI: 10.1302/0301-620x.98b8.37497] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [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: 11/05/2015] [Accepted: 04/06/2016] [Indexed: 11/05/2022]
Abstract
Aims We examined risk of developing acute renal failure and the associated mortality among patients aged > 65 years undergoing surgery for a fracture of the hip. Patients and Methods We used medical databases to identify patients who underwent surgical treatment for a fracture of the hip in Northern Denmark between 2005 and 2011. Acute renal failure was classified as stage 1, 2 and 3 according to the Kidney Disease Improving Global Outcome criteria. We computed the risk of developing acute renal failure within five days after surgery with death as a competing risk, and the short-term (six to 30 days post-operatively) and long-term mortality (31 days to 365 days post-operatively). We calculated adjusted hazard ratios (HRs) for death with 95% confidence intervals (CIs). Results Among 13 529 patients who sustained a fracture of the hip, 1717 (12.7%) developed acute renal failure post-operatively, including 1218 (9.0%) with stage 1, 364 (2.7%) with stage 2, and 135 (1.0%) with stage 3 renal failure. The short-term mortality was 15.9% and 5.6% for patients with and without acute renal failure, respectively (HR 2.8, 95% CI 2.4 to 3.2). The long-term mortality was 25.0% and 18.3% for those with and without acute renal failure, respectively (HR 1.3, 95% CI 1.2 to 1.5). The mortality was higher in patients with an increased severity of renal failure. Conclusion Acute renal failure is a common complication of surgery in elderly patients who sustain a fracture of the hip, and is associated with increased mortality up to one year after surgery despite adjustment for coexisting comorbidity and medication before surgery. Cite this article: Bone Joint J 2016;98-B:1112–18.
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Affiliation(s)
- A. B. Pedersen
- Aarhus University Hospital, Olof
Palmes Alle 43-45, Aarhus, 8200, Denmark
| | - C. F. Christiansen
- Aarhus University Hospital, Olof
Palmes Alle 43-45, Aarhus, 8200, Denmark
| | - H. Gammelager
- Aarhus University Hospital, Olof
Palmes Alle 43-45, Aarhus, 8200, Denmark
| | - J. Kahlert
- Aarhus University Hospital, Olof
Palmes Alle 43-45, Aarhus, 8200, Denmark
| | - H. T. Sørensen
- Aarhus University Hospital, Olof
Palmes Alle 43-45, Aarhus, 8200, Denmark
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Böhling L, Brockhinke A, Kahlert J, Weber L, Harder RA, Yufit DS, Howard JAK, MacBride JAH, Fox MA. Substituent Effects on the Fluorescence Properties ofortho-Carboranes: Unusual Emission Behaviour inC-(2′-Pyridyl)-ortho-carboranes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501284] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mor A, Antonsen S, Kahlert J, Holsteen V, Jørgensen S, Holm-Pedersen J, Sørensen HT, Pedersen O, Ehrenstein V. Prenatal exposure to systemic antibacterials and overweight and obesity in Danish schoolchildren: a prevalence study. Int J Obes (Lond) 2015; 39:1450-5. [PMID: 26178293 DOI: 10.1038/ijo.2015.129] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [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: 12/19/2014] [Revised: 06/26/2015] [Accepted: 07/04/2015] [Indexed: 12/16/2022]
Abstract
BACKGROUND/OBJECTIVE Prenatal exposure to antibacterials may permanently dysregulate fetal metabolic patterns via epigenetic pathways or by altering maternal microbiota. We examined the association of prenatal exposure to systemic antibacterials with overweight and obesity in schoolchildren. SUBJECTS/METHODS We conducted a prevalence study among Danish schoolchildren aged 7-16 years using data from routine school anthropometric evaluations conducted during 2002-2013. Prenatal exposure to antibacterials was ascertained by using maternal prescription dispensations and infection-related hospital admissions during pregnancy. We defined overweight and obesity among the children using standard age- and sex-specific cutoffs. We computed sex-specific adjusted prevalence ratios (aPRs) of overweight and obesity associated with exposure to prenatal antibacterials, adjusting for maternal age at delivery, marital status, smoking in pregnancy and multiple gestation; we also stratified the analyses by birth weight. RESULTS Among 9886 schoolchildren, 3280 (33%) had prenatal exposure to antibacterials. aPRs associated with the exposure were 1.26 (95% confidence interval (CI): 1.10-1.45) for overweight and 1.29 (95% CI: 1.03-1.62) for obesity. Among girls, aPRs were 1.16 (95% CI: 0.95-1.42) for overweight and 1.27 (95% CI: 0.89 to 1.82) for obesity. Among boys, aPRs were 1.37 (95% CI: 1.13-1.66) for overweight and 1.29 (95% CI: 0.96-1.73) for obesity. The aPR for overweight was higher among schoolchildren with birth weight <3500 g (aPR: 1.30, 95% CI: 1.05-1.61) than in schoolchildren with birth weight ⩾3500 g (aPR: 1.18, 95% CI: 0.95-1.46). Inversely, the association for obesity was higher among schoolchildren with birth weight ⩾3500 g (aPR: 1.35, 95% CI: 1.00-1.81) than among those who were <3500 g at birth (aPR: 1.16, 95% CI: 0.82-1.65). CONCLUSIONS Prenatal exposure to systemic antibacterials is associated with an increased risk of overweight and obesity at school age, and this association varies by birth weight.
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Affiliation(s)
- A Mor
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - S Antonsen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - J Kahlert
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - V Holsteen
- Child and Adolescent Health Section, Department of Family and Employment, Municipality of Aalborg, Aalborg, Denmark
| | - S Jørgensen
- Child and Adolescent Health Section, Department of Family and Employment, Municipality of Aalborg, Aalborg, Denmark
| | - J Holm-Pedersen
- Child and Adolescent Health Section, Department of Family and Employment, Municipality of Aalborg, Aalborg, Denmark
| | - H T Sørensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - O Pedersen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - V Ehrenstein
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
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Austin CJD, Moir M, Kahlert J, Smith JR, Jamie JF, Kassiou M, Rendina LM. Carborane-Containing Hydroxyamidine Scaffolds as Novel Inhibitors of Indoleamine 2,3-Dioxygenase 1 (IDO1). Aust J Chem 2015. [DOI: 10.1071/ch15489] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two new carborane-containing hydroxyamidines were prepared as potential inhibitors of the indoleamine 2,3-dioxygenase 1 (IDO1) enzyme. One compound (3) displayed low micromolar (1.90 μM) inhibition of IDO1, with the related compound (4) displaying >5-fold lower inhibitory activity, i.e. subtle differences in structure between the two carborane compounds led to dramatic changes in inhibitor binding. In silico docking experiments unravel a possible molecular mechanism that is consistent with the observed difference in IDO1 binding for 3 and 4 and also for the phenyl bioisosteres 1 and 2.
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Kahlert J, Böhling L, Brockhinke A, Stammler HG, Neumann B, Rendina LM, Low PJ, Weber L, Fox MA. Syntheses and reductions of C-dimesitylboryl-1,2-dicarba-closo-dodecaboranes. Dalton Trans 2015; 44:9766-81. [DOI: 10.1039/c5dt00758e] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An investigation ofC-dimesitylboryl-ortho-carboranes, 1-(BMes2)-2-R-1,2-C2B10H10(1and2), reveals that the carborane is the electron-acceptor and the mesityl group is the electron-donor in these dyads.
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Affiliation(s)
- Jan Kahlert
- Fakultät für Chemie der Universität Bielefeld
- 33615 Bielefeld
- Germany
| | - Lena Böhling
- Fakultät für Chemie der Universität Bielefeld
- 33615 Bielefeld
- Germany
| | | | | | - Beate Neumann
- Fakultät für Chemie der Universität Bielefeld
- 33615 Bielefeld
- Germany
| | | | - Paul J. Low
- School of Chemistry and Biochemistry
- University of Western Australia
- Crawley
- Australia
| | - Lothar Weber
- Fakultät für Chemie der Universität Bielefeld
- 33615 Bielefeld
- Germany
| | - Mark A. Fox
- Department of Chemistry
- Durham University
- Durham DH1 3LE
- UK
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Kahlert J, Stammler HG, Neumann B, Harder RA, Weber L, Fox MA. Crystal structures of the carborane dianions [1,4-(PhCB₁₀H₁₀C)₂C₆H₄]²⁻ and [1,4-(PhCB₁₀H₁₀C)₂C₆F₄]²⁻ and the stabilizing role of the para-phenylene unit on 2n+3 skeletal electron clusters. Angew Chem Int Ed Engl 2014; 53:3702-5. [PMID: 24574170 PMCID: PMC4257503 DOI: 10.1002/anie.201310718] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Indexed: 11/14/2022]
Abstract
While carboranes with 2 n+2 and 2 n+4 (n=number of skeletal atoms) skeletal electrons (SE) are widely known, little has been reported on carboranes with odd SE numbers. Electrochemical measurements on two-cage assemblies, where two C-phenyl-ortho-carboranyl groups are linked by a para-phenylene or a para-tetrafluorophenylene bridge, revealed two well separated and reversible two-electron reduction waves indicating formation of stable dianions and tetraanions. The salts of the dianions were isolated by reduction with sodium metal and their unusual structures were determined by X-ray crystallography. The diamagnetic dianions contain two 2 n+3 SE clusters where each cluster has a notably long carborane C-carborane C distance of ca 2.4 Å. The π conjugation within the phenylene bridge plays an important role in the stabilization of these carboranes with odd SE counts.
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Affiliation(s)
- Jan Kahlert
- Fakultät für Chemie der Universität Bielefeld, 33615 Bielefeld (Germany)
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Kahlert J, Stammler HG, Neumann B, Harder RA, Weber L, Fox MA. Crystal Structures of the Carborane Dianions [1,4-(PhCB10H10C)2C6H4]2−and [1,4-(PhCB10H10C)2C6F4]2−and the Stabilizing Role of thepara-Phenylene Unit on 2 n+3 Skeletal Electron Clusters. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310718] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Austin CJD, Kahlert J, Issa F, Reed JH, Smith JR, Ioppolo JA, Ong JA, Jamie JF, Hibbs D, Rendina LM. The first indoleamine-2,3-dioxygenase-1 (IDO1) inhibitors containing carborane. Dalton Trans 2014; 43:10719-24. [DOI: 10.1039/c4dt00444b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first examples of indoleamine-2,3-dioxygenase-1 (IDO1) inhibitors containing a carborane cage are reported.
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Affiliation(s)
| | - Jan Kahlert
- School of Chemistry
- The University of Sydney
- Sydney, Australia
| | - Fatiah Issa
- School of Chemistry
- The University of Sydney
- Sydney, Australia
| | - John H. Reed
- School of Chemistry
- The University of Sydney
- Sydney, Australia
| | - Jason R. Smith
- Department of Chemistry and Biomolecular Sciences
- Macquarie University
- Sydney, Australia
| | | | - Jennifer A. Ong
- Faculty of Pharmacy
- The University of Sydney
- Sydney, Australia
| | - Joanne F. Jamie
- Department of Chemistry and Biomolecular Sciences
- Macquarie University
- Sydney, Australia
| | - David Hibbs
- Faculty of Pharmacy
- The University of Sydney
- Sydney, Australia
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Weber L, Kahlert J, Brockhinke R, Böhling L, Halama J, Brockhinke A, Stammler HG, Neumann B, Nervi C, Harder RA, Fox MA. C,C'-bis(benzodiazaborolyl)dicarba-closo-dodecaboranes: synthesis, structures, photophysics and electrochemistry. Dalton Trans 2013; 42:10982-96. [PMID: 23793134 DOI: 10.1039/c3dt51125a] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Six new C,C'-bis(benzodiazaborolyl)dicarba-closo-dodecaboranes, 1,A-R2-1,A-C2B10H10, where R represents the group 2-(1,3-Et2-1,3,2-N2BC6H4) or 2-(1,3-Ph2-1,3,2-N2BC6H4) and A is 2, 7 or 12, were synthesized from o-, m-, and p-dicarbadodecaboranes (carboranes) by lithiation and subsequent treatment with the respective 2-bromo-1,3,2-benzodiazaboroles. UV-visible and fluorescence spectra of all carboranes display low energy charge transfer emissions. While such emissions with Stokes shifts between 17,330 and 21,290 cm(-1) are typical for C,C'-bis(aryl)-ortho-carboranes, the observed low-energy emissions with Stokes shifts between 8320 and 15,170 cm(-1) for the meta- and para-isomers are unusual as high-energy emissions are typical for meta- and para-dicarbadodecaboranes. Fluorescence quantum yields (φF) for the novel 1,7- and 1,12-bis(benzodiazaborolyl)-carboranes depend on the substituents at the nitrogen atoms of the heterocycle. Thus, the para-carborane with N-ethyl substituents 1,12-(1',3'-Et2-1',3',2'-N2BC6H4)2-1,12-C2B10H10 has a φF value of 41% in cyclohexane solution and only of 9% in the solid state, whereas the analogous 1,12-(1',3'-Ph2-1',3',2'-N2BC6H4)2-1,12-C2B10H10 shows quantum yields of 3% in cyclohexane solution and 72% in the solid state. X-ray crystallographic, computational and cyclic voltammetry studies for these carboranes are also presented.
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Affiliation(s)
- Lothar Weber
- Fakultät für Chemie der Universität Bielefeld, 33615 Bielefeld, Germany.
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Weber L, Eickhoff D, Halama J, Werner S, Kahlert J, Stammler HG, Neumann B. Hydroboration of Alkyne-Functionalized 1,3,2-Benzodiazaboroles. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201489] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Austin CJD, Kahlert J, Kassiou M, Rendina LM. The translocator protein (TSPO): a novel target for cancer chemotherapy. Int J Biochem Cell Biol 2013; 45:1212-6. [PMID: 23518318 DOI: 10.1016/j.biocel.2013.03.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [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: 01/21/2013] [Revised: 02/21/2013] [Accepted: 03/05/2013] [Indexed: 01/02/2023]
Abstract
The translocator protein (TSPO) is an 18 kDa transmembrane protein primarily found in the outer mitochondrial membrane where it forms a key part of the mitochondrial permeability transition pore (MPTP). Omnipresent in almost all tissues, TSPO up-regulation has been connected to neuronal damage and inflammation, making the protein an important bio-imaging marker for disease progression. More recently, TSPO has attracted attention as a possible molecular target for tumour imaging and chemotherapy. In this review we summarize TSPO's molecular characteristics and highlight research progress in recent years in the field of TSPO-targeted cancer diagnostics and treatments.
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Abstract
The unique chemistry of boron allows for the utilisation of novel building-blocks which are not traditionally found in medicinal chemistry. The pharmaceutical industry has begun to exploit boronic acid derivatives as new drugs and several research groups are also exploring 1,2-azaborines and icosahedral boranes known as carboranes as boron-based structural motifs, with great promise for innovative drug design. Recent advances in the medicinal chemistry of these three important boron moieties are highlighted and illustrated with selected examples.
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Weber L, Kahlert J, Böhling L, Brockhinke A, Stammler HG, Neumann B, Harder RA, Low PJ, Fox MA. Electrochemical and spectroelectrochemical studies of C-benzodiazaborolyl-ortho-carboranes. Dalton Trans 2013. [DOI: 10.1039/c2dt32378h] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Weber L, Kahlert J, Brockhinke R, Böhling L, Brockhinke A, Stammler HG, Neumann B, Harder RA, Fox MA. Luminescence properties of C-diazaborolyl-ortho-carboranes as donor-acceptor systems. Chemistry 2012; 18:8347-57. [PMID: 22623079 DOI: 10.1002/chem.201200390] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Indexed: 11/08/2022]
Abstract
Seven derivatives of 1,2-dicarbadodecaborane (ortho-carborane, 1,2-C(2)B(10)H(12)) with a 1,3-diethyl- or 1,3-diphenyl-1,3,2-benzodiazaborolyl group on one cage carbon atom were synthesized and structurally characterized. Six of these compounds showed remarkable low-energy fluorescence emissions with large Stokes shifts of 15100-20260 cm(-1) and quantum yields (Φ(F)) of up to 65% in the solid state. The low-energy fluorescence emission, which was assigned to a charge-transfer (CT) transition between the cage and the heterocyclic unit, depended on the orientation (torsion angle, ψ) of the diazaborolyl group with respect to the cage C-C bond. In cyclohexane, two compounds exhibited very weak dual fluorescence emissions with Stokes shifts of 15660-18090 cm(-1) for the CT bands and 1960-5540 cm(-1) for the high-energy bands, which were assigned to local transitions within the benzodiazaborole units (local excitation, LE), whereas four compounds showed only CT bands with Φ(F) values between 8-32%. Two distinct excited singlet-state (S(1)) geometries, denoted S(1)(LE) and S(1)(CT), were observed computationally for the benzodiazaborolyl-ortho-carboranes, the population of which depended on their orientation (ψ). TD-DFT calculations on these excited state geometries were in accord with their CT and LE emissions. These C-diazaborolyl-ortho-carboranes were viewed as donor-acceptor systems with the diazaborolyl group as the donor and the ortho-carboranyl group as the acceptor.
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Affiliation(s)
- Lothar Weber
- Fakultät für Chemie der Universität Bielefeld, 33615 Bielefeld, Germany.
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Weber L, Eickhoff D, Kahlert J, Böhling L, Brockhinke A, Stammler HG, Neumann B, Fox MA. Diazaborolyl-boryl push–pull systems with ethynylene–arylene bridges as ‘turn-on’ fluoride sensors. Dalton Trans 2012; 41:10328-46. [DOI: 10.1039/c2dt30438d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Weber L, Kahlert J, Stammler HG, Neumann B. Syntheses, Structure, Electrochemistry, and Optical Properties of 1,3-Diethyl-2,3-dihydro-1-H-1,3,2-pyrido-[4,5-b]-diazaboroles. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800157] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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