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Corvaro M, Johnson K, Himmelstein M, Bianchi E, Mingoia R, Bartels M, Reiss R, Terry C, LaRocca J, Murphy L, Gehen S. P06-13 Spinosad – mode of action and human relevance assessment of dystocia in rats. Toxicol Lett 2022. [DOI: 10.1016/j.toxlet.2022.07.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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2
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van der Veen S, van Dijk M, Jans J, Verhoeven-Duif N, van Wijk R, Bartels M, Mañú Pereira M, Colombatti R, Martella M, Munaretto V, Boaro M, Bartolucci P, Cnossen M, Biemond B, van Beers E. P1500: 2,3-DIPHOSPHOGLYCERATE DETECTION VIA DIRECT INFUSION HIGH RESOLUTION MASS SPECTROMETRY CORRELATES WITH QUANTITATIVE DETECTION IN BLOOD OF PATIENTS WITH SICKLE CELL DISEASE. Hemasphere 2022. [PMCID: PMC9429661 DOI: 10.1097/01.hs9.0000848856.08012.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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3
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Middeldorp CM, Akingbuwa WA, Jami ES, Bartels M. [Genetic research in childhood and adolescent psychiatry]. Tijdschr Psychiatr 2022; 64:295-300. [PMID: 35735040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND Childhood mental health problems are partly influence by genetic factors with heritability estimates varying between 40% and 90%. AIM We provide examples of genetic research focusing on explaining the continuity of symptoms and the association between parental traits and offspring psychopathology. METHOD We summarize two recently publish review papers RESULTS: There are significant genetic correlations between childhood and adult mental disorders. Genetic factors also explain part of the associations between parental traits and offspring psychopathology, because parents and children share 50% of their genetic material. CONCLUSION The role of genetic factors is not restricted to influencing the risk to develop a mental disorder. They also play a role in persistence of symptoms and the associations with the environment.
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4
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Lodeweges J, van Rossum P, Bartels M, van Lindert A, Pomp J, Peters M, Verhoeff J. PO-1172 Ultra-central lung tumors: safety and efficacy of protracted stereotactic body radiotherapy. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07623-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Bartels M, van der Velden J, Pielkenrood B, Gerlich S, Bras M, Verlaan J, Monninkhof E, Peters M, van der Linden Y, Verkooijen H. OC-0407 Quality of Life after Palliative Radiotherapy for Bone Metastases: Analysis of the PRESENT-cohort. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06894-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Berrevoets MC, Bos J, Huisjes R, Merkx TH, van Oirschot BA, van Solinge WW, Verweij JW, Lindeboom MYA, van Beers EJ, Bartels M, van Wijk R, Rab MAE. Ektacytometry Analysis of Post-splenectomy Red Blood Cell Properties Identifies Cell Membrane Stability Test as a Novel Biomarker of Membrane Health in Hereditary Spherocytosis. Front Physiol 2021; 12:641384. [PMID: 33841180 PMCID: PMC8027126 DOI: 10.3389/fphys.2021.641384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 02/24/2021] [Indexed: 11/13/2022] Open
Abstract
Hereditary spherocytosis (HS) is the most common form of hereditary chronic hemolytic anemia. It is caused by mutations in red blood cell (RBC) membrane and cytoskeletal proteins, which compromise membrane integrity, leading to vesiculation. Eventually, this leads to entrapment of poorly deformable spherocytes in the spleen. Splenectomy is a procedure often performed in HS. The clinical benefit results from removing the primary site of destruction, thereby improving RBC survival. But whether changes in RBC properties contribute to the clinical benefit of splenectomy is unknown. In this study we used ektacytometry to investigate the longitudinal effects of splenectomy on RBC properties in five well-characterized HS patients at four different time points and in a case-control cohort of 26 HS patients. Osmotic gradient ektacytometry showed that splenectomy resulted in improved intracellular viscosity (hydration state) whereas total surface area and surface-to-volume ratio remained essentially unchanged. The cell membrane stability test (CMST), which assesses the in vitro response to shear stress, showed that after splenectomy, HS RBCs had partly regained the ability to shed membrane, a property of healthy RBCs, which was confirmed in the case-control cohort. In particular the CMST holds promise as a novel biomarker in HS that reflects RBC membrane health and may be used to asses treatment response in HS.
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Affiliation(s)
- M C Berrevoets
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - J Bos
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - R Huisjes
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - T H Merkx
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - B A van Oirschot
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - W W van Solinge
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - J W Verweij
- Department of Pediatric Surgery, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - M Y A Lindeboom
- Department of Pediatric Surgery, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - E J van Beers
- Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - M Bartels
- Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - R van Wijk
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - M A E Rab
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
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7
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Whipp AM, Vuoksimaa E, Korhonen T, Pool R, But A, Ligthart L, Hagenbeek FA, Bartels M, Bogl LH, Pulkkinen L, Rose RJ, Boomsma DI, Kaprio J. Ketone body 3-hydroxybutyrate as a biomarker of aggression. Sci Rep 2021; 11:5813. [PMID: 33712630 PMCID: PMC7955062 DOI: 10.1038/s41598-021-84635-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 02/09/2021] [Indexed: 01/05/2023] Open
Abstract
Human aggression is a complex behaviour, the biological underpinnings of which remain poorly known. To gain insights into aggression biology, we studied relationships with aggression of 11 low-molecular-weight metabolites (amino acids, ketone bodies), processed using 1H nuclear magnetic resonance spectroscopy. We used a discovery sample of young adults and an independent adult replication sample. We studied 725 young adults from a population-based Finnish twin cohort born 1983-1987, with aggression levels rated in adolescence (ages 12, 14, 17) by multiple raters and blood plasma samples at age 22. Linear regression models specified metabolites as the response variable and aggression ratings as predictor variables, and included several potential confounders. All metabolites showed low correlations with aggression, with only one-3-hydroxybutyrate, a ketone body produced during fasting-showing significant (negative) associations with aggression. Effect sizes for different raters were generally similar in magnitude, while teacher-rated (age 12) and self-rated (age 14) aggression were both significant predictors of 3-hydroxybutyrate in multi-rater models. In an independent replication sample of 960 adults from the Netherlands Twin Register, higher aggression (self-rated) was also related to lower levels of 3-hydroxybutyrate. These exploratory epidemiologic results warrant further studies on the role of ketone metabolism in aggression.
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Affiliation(s)
- A M Whipp
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland.
| | - E Vuoksimaa
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - T Korhonen
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - R Pool
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Amsterdam Public Health (APH) Research Institute, Amsterdam, The Netherlands
| | - A But
- Clinicum, Department of Public Health, University of Helsinki, Helsinki, Finland
| | - L Ligthart
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - F A Hagenbeek
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Amsterdam Public Health (APH) Research Institute, Amsterdam, The Netherlands
| | - M Bartels
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Amsterdam Public Health (APH) Research Institute, Amsterdam, The Netherlands
| | - L H Bogl
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland.,Department of Epidemiology, Centre for Public Health, Medical University of Vienna, Vienna, Austria
| | - L Pulkkinen
- Department of Psychology, University of Jyvaskyla, Jyvaskyla, Finland
| | - R J Rose
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana, USA
| | - D I Boomsma
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Amsterdam Public Health (APH) Research Institute, Amsterdam, The Netherlands
| | - J Kaprio
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland.,Clinicum, Department of Public Health, University of Helsinki, Helsinki, Finland
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8
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Fakkel M, Peeters M, Lugtig P, Zondervan-Zwijnenburg MAJ, Blok E, White T, van der Meulen M, Kevenaar ST, Willemsen G, Bartels M, Boomsma DI, Schmengler H, Branje S, Vollebergh WAM. Testing sampling bias in estimates of adolescent social competence and behavioral control. Dev Cogn Neurosci 2020; 46:100872. [PMID: 33142133 PMCID: PMC7642800 DOI: 10.1016/j.dcn.2020.100872] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 07/31/2020] [Accepted: 10/15/2020] [Indexed: 11/11/2022] Open
Abstract
In 5 of the 6 large Dutch developmental cohorts investigated here, lower SES adolescents are underrepresented and higher SES adolescents overrepresented. With former studies clearly revealing differences between SES strata in adolescent social competence and behavioral control, this misrepresentation may contribute to an overestimation of normative adolescent competence. Using a raking procedure, we used national census statistics to weigh the cohorts to be more representative of the Dutch population. Contrary to our expectations, in all cohorts, little to no differences between SES strata were found in the two outcomes. Accordingly, no differences between weighted and unweighted mean scores were observed across all cohorts. Furthermore, no clear change in correlations between social competence and behavioral control was found. These findings are most probably explained by the fact that measures of SES in the samples were quite limited, and the low SES participants in the cohorts could not be considered as representative of the low SES groups in the general population. Developmental outcomes associated with SES may be affected by a raking procedure in other cohorts that have a sufficient number and sufficient variation of low SES adolescents.
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Affiliation(s)
- M Fakkel
- Utrecht University, Utrecht, The Netherlands.
| | - M Peeters
- Utrecht University, Utrecht, The Netherlands
| | - P Lugtig
- Utrecht University, Utrecht, The Netherlands
| | | | - E Blok
- Erasmus Universiteit, Rotterdam, The Netherlands
| | - T White
- Erasmus Universiteit, Rotterdam, The Netherlands
| | | | - S T Kevenaar
- Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - G Willemsen
- Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - M Bartels
- Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - D I Boomsma
- Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - H Schmengler
- Erasmus Universiteit, Rotterdam, The Netherlands; University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - S Branje
- Utrecht University, Utrecht, The Netherlands
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9
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Stevens A, Fischer A, Bartels M, Buchkremer G. Electroconvulsive therapy: a review on indications, methods, risks and medication. Eur Psychiatry 2020; 11:165-74. [DOI: 10.1016/0924-9338(96)88386-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/1995] [Accepted: 07/12/1995] [Indexed: 10/17/2022] Open
Abstract
SummaryThis paper reviews and presents data of practical impact for those administering electroconvulsive therapy (ECT). In the first section, physical and physiological aspects of the stimulus as well as methods of stimulation are discussed. The second section deals with indications for ECT, efficacy and treatment modalities such as seizure duration, treatment frequency and total number of ECT applications. The last section is devoted to side effects, risks, comedication and comorbidity.
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10
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Hendriks AM, Finkenauer C, Nivard MG, Van Beijsterveldt CEM, Plomin RJ, Boomsma DI, Bartels M. Comparing the genetic architecture of childhood behavioral problems across socioeconomic strata in the Netherlands and the United Kingdom. Eur Child Adolesc Psychiatry 2020; 29:353-362. [PMID: 31154517 PMCID: PMC7056693 DOI: 10.1007/s00787-019-01357-x] [Citation(s) in RCA: 8] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 05/23/2019] [Indexed: 11/12/2022]
Abstract
Socioeconomic status (SES) affects the development of childhood behavioral problems. It has been frequently observed that children from low SES background tend to show more behavioral problems. There also is some evidence that SES has a moderating effect on the causes of individual differences in childhood behavioral problems, with lower heritability estimates and a stronger contribution of environmental factors in low SES groups. The aim of the present study was to examine whether the genetic architecture of childhood behavioral problems suggests the presence of protective and/or harmful effects across socioeconomic strata, in two countries with different levels of socioeconomic disparity: the Netherlands and the United Kingdom. We analyzed data from 7-year-old twins from the Netherlands Twin Register (N = 24,112 twins) and the Twins Early Development Study (N = 19,644 twins). The results revealed a nonlinear moderation effect of SES on the contribution of genetic and environmental factors to individual differences in childhood behavioral problems. The heritability was higher, the contribution of the shared environment was lower, and the contribution of the nonshared environment was higher, for children from high SES families, compared to children from low or medium SES families. The pattern was similar for Dutch and UK families. We discuss the importance of these findings for prevention and intervention goals.
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Affiliation(s)
- A. M. Hendriks
- grid.12380.380000 0004 1754 9227Vrije Universiteit Amsterdam, Department of Biological Psychology, Netherlands Twin Register, van der Boechorststraat 7, 1081 BT Amsterdam, the Netherlands ,grid.16872.3a0000 0004 0435 165XAmsterdam Public Health Research Institute, Amsterdam, the Netherlands
| | - C. Finkenauer
- grid.12380.380000 0004 1754 9227Vrije Universiteit Amsterdam, Department of Biological Psychology, Netherlands Twin Register, van der Boechorststraat 7, 1081 BT Amsterdam, the Netherlands ,grid.5477.10000000120346234Department of Interdisciplinary Social Sciences: Youth Studies, Utrecht University, Padualaan 14, 3584 CH Utrecht, the Netherlands
| | - M. G. Nivard
- grid.12380.380000 0004 1754 9227Vrije Universiteit Amsterdam, Department of Biological Psychology, Netherlands Twin Register, van der Boechorststraat 7, 1081 BT Amsterdam, the Netherlands
| | - C. E. M. Van Beijsterveldt
- grid.12380.380000 0004 1754 9227Vrije Universiteit Amsterdam, Department of Biological Psychology, Netherlands Twin Register, van der Boechorststraat 7, 1081 BT Amsterdam, the Netherlands
| | - R. J. Plomin
- grid.13097.3c0000 0001 2322 6764King’s College London, Social, Genetic and Developmental Psychiatry Centre, MRC Social, Institute of Psychiatry, Strand, London, WC2R 2LS UK
| | - D. I. Boomsma
- grid.12380.380000 0004 1754 9227Vrije Universiteit Amsterdam, Department of Biological Psychology, Netherlands Twin Register, van der Boechorststraat 7, 1081 BT Amsterdam, the Netherlands ,grid.16872.3a0000 0004 0435 165XAmsterdam Public Health Research Institute, Amsterdam, the Netherlands
| | - M. Bartels
- grid.12380.380000 0004 1754 9227Vrije Universiteit Amsterdam, Department of Biological Psychology, Netherlands Twin Register, van der Boechorststraat 7, 1081 BT Amsterdam, the Netherlands ,grid.16872.3a0000 0004 0435 165XAmsterdam Public Health Research Institute, Amsterdam, the Netherlands
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11
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Bartels M, Weckbecker D, Kuhn PH, Ryazanov S, Leonov A, Griesinger C, Lichtenthaler SF, Bötzel K, Giese A. Iron-mediated aggregation and toxicity in a novel neuronal cell culture model with inducible alpha-synuclein expression. Sci Rep 2019; 9:9100. [PMID: 31235814 PMCID: PMC6591385 DOI: 10.1038/s41598-019-45298-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 03/11/2019] [Indexed: 01/25/2023] Open
Abstract
Parkinson's disease (PD) represents an increasing problem in society. The oligomerization of alpha-synuclein (αSyn) is a suggested key event in its pathogenesis, yet the pathological modes of action remain to be fully elucidated. To identify potential disease-modifying therapeutics and to study αSyn-mediated toxic mechanisms, we established cell lines with inducible overexpression of different αSyn constructs: αSyn, αSyn coupled to the fluorescence protein Venus (αSyn-Venus), and αSyn coupled to the N-terminal or C-terminal part of Venus (V1S and SV2, respectively) for a bimolecular fluorescence complementation assay (BiFC). Inducibility was achieved by applying modified GAL4-UAS or Cre-loxP systems and addition of tebufenozide or 4-OH-tamoxifen, respectively. Expression constructs were stably integrated into the host genome of H4 neuroglioma cells by lentiviral transduction. We here demonstrate a detailed investigation of the expression characteristics of inducible H4 cells showing low background expression and high inducibility. We observed increased protein load and aggregation of αSyn upon incubation with DMSO and FeCl3 along with an increase in cytotoxicity. In summary, we present a system for the creation of inducibly αSyn-overexpressing cell lines holding high potential for the screening for modulators of αSyn aggregation and αSyn-mediated toxicity.
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Affiliation(s)
- Martin Bartels
- Center for Neuropathology and Prion Research, Ludwig-Maximilians-University, Munich, Germany.,Department of Neurology, Klinikum der Universität München, Munich, Germany
| | | | - Peer-Hendrik Kuhn
- Institute of Pathology, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Sergey Ryazanov
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Georg-August-University Göttingen, 37073, Göttingen, Germany.,Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077, Göttingen, Germany
| | - Andrei Leonov
- MODAG GmbH, Wendelsheim, Germany.,Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Georg-August-University Göttingen, 37073, Göttingen, Germany.,Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077, Göttingen, Germany
| | - Christian Griesinger
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Georg-August-University Göttingen, 37073, Göttingen, Germany.,Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077, Göttingen, Germany
| | - Stefan F Lichtenthaler
- German Center for Neurodegenerative Diseases (DZNE), and Munich Cluster for Systems Neurology (SyNergy), Munich, Germany.,Neuroproteomics, School of Medicine, Klinikum rechts der Isar, and Institute for Advanced Science, Technical University of Munich, 81675, Munich, Germany
| | - Kai Bötzel
- Department of Neurology, Klinikum der Universität München, Munich, Germany
| | - Armin Giese
- Center for Neuropathology and Prion Research, Ludwig-Maximilians-University, Munich, Germany.
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12
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Dooijeweert BV, Broeks M, Jans J, Wijk RV, Bartels M. PS1111 QUANTIFICATION OF METABOLITES IN DRIED BLOOD SPOTS OF DIAMOND BLACKFAN ANEMIA PATIENTS REVEALS NOVEL INSIGHTS IN DEREGULATED CELLULAR PATHWAYS INVOLVED IN HYPOPLASTIC ANEMIA. Hemasphere 2019. [DOI: 10.1097/01.hs9.0000562732.17676.7d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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13
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Baselmans BML, van de Weijer MP, Abdellaoui A, Vink JM, Hottenga JJ, Willemsen G, Nivard MG, de Geus EJC, Boomsma DI, Bartels M. A Genetic Investigation of the Well-Being Spectrum. Behav Genet 2019; 49:286-297. [PMID: 30810878 PMCID: PMC6497622 DOI: 10.1007/s10519-019-09951-0] [Citation(s) in RCA: 28] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 01/29/2019] [Indexed: 12/21/2022]
Abstract
The interrelations among well-being, neuroticism, and depression can be captured in a so-called well-being spectrum (3-phenotype well-being spectrum, 3-WBS). Several other human traits are likely linked to the 3-WBS. In the present study, we investigate how the 3-WBS can be expanded. First, we constructed polygenic risk scores for the 3-WBS and used this score to predict a series of traits that have been associated with well-being in the literature. We included information on loneliness, big five personality traits, self-rated health, and flourishing. The 3-WBS polygenic score predicted all the original 3-WBS traits and additionally loneliness, self-rated health, and extraversion (R2 between 0.62% and 1.58%). Next, using LD score regression, we calculated genetic correlations between the 3-WBS and the traits of interest. From all candidate traits, loneliness and self-rated health were found to have the strongest genetic correlations (rg = - 0.79, and rg= 0.64, respectively) with the 3-WBS. Lastly, we use Genomic SEM to investigate the factor structure of the proposed spectrum. The best model fit was obtained for a two-factor model including the 5-WBS traits, with two highly correlated factors representing the negative- and positive end of the spectrum. Based on these analyses we propose to include loneliness and self-rated health in the WBS and use a 5-phenotype well-being spectrum in future studies to gain more insight into the determinants of human well-being.
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Affiliation(s)
- B M L Baselmans
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands. .,Amsterdam Public Health Research Institute, Amsterdam, The Netherlands.
| | - M P van de Weijer
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands.,Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - A Abdellaoui
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands.,Department of Psychiatry, Amsterdam University Medical Centre, Location Academic Medical Center, Amsterdam, The Netherlands
| | - J M Vink
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - J J Hottenga
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands
| | - G Willemsen
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands
| | - M G Nivard
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands
| | - E J C de Geus
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands.,Amsterdam Public Health Research Institute, Amsterdam, The Netherlands.,Neuroscience Amsterdam, Amsterdam, The Netherlands
| | - D I Boomsma
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands.,Amsterdam Public Health Research Institute, Amsterdam, The Netherlands.,Neuroscience Amsterdam, Amsterdam, The Netherlands
| | - M Bartels
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands.,Amsterdam Public Health Research Institute, Amsterdam, The Netherlands.,Neuroscience Amsterdam, Amsterdam, The Netherlands
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14
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van ’t Ent D, den Braber A, Baselmans BML, Brouwer RM, Dolan CV, Pol HEH, de Geus EJC, Bartels M. Publisher Correction: Associations between subjective well-being and subcortical brain volumes. Sci Rep 2018; 8:17556. [PMID: 30482909 PMCID: PMC6258761 DOI: 10.1038/s41598-018-35961-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.
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Affiliation(s)
- D. van ’t Ent
- 0000 0004 1754 9227grid.12380.38Department of Biological Psychology, VU University, Amsterdam, The Netherlands ,grid.484519.5Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - A. den Braber
- 0000 0004 1754 9227grid.12380.38Department of Biological Psychology, VU University, Amsterdam, The Netherlands ,grid.484519.5Amsterdam Neuroscience, Amsterdam, The Netherlands ,0000 0004 0435 165Xgrid.16872.3aAlzheimer Center and Department of Neurology, VU University Medical Center, Amsterdam, The Netherlands
| | - B. M. L. Baselmans
- 0000 0004 1754 9227grid.12380.38Department of Biological Psychology, VU University, Amsterdam, The Netherlands ,0000 0004 0435 165Xgrid.16872.3aEMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
| | - R. M. Brouwer
- 0000000090126352grid.7692.aBrain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, Utrecht, The Netherlands
| | - C. V. Dolan
- 0000 0004 1754 9227grid.12380.38Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - H. E. Hulshoff Pol
- 0000000090126352grid.7692.aBrain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, Utrecht, The Netherlands
| | - E. J. C. de Geus
- 0000 0004 1754 9227grid.12380.38Department of Biological Psychology, VU University, Amsterdam, The Netherlands ,0000 0004 0435 165Xgrid.16872.3aEMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands ,grid.484519.5Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - M. Bartels
- 0000 0004 1754 9227grid.12380.38Department of Biological Psychology, VU University, Amsterdam, The Netherlands ,0000 0004 0435 165Xgrid.16872.3aEMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands ,grid.484519.5Amsterdam Neuroscience, Amsterdam, The Netherlands
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Zhang F, Bartels M, Clark A, Erskine T, Auernhammer T, Bhhatarai B, Wilson D, Marty S. Performance evaluation of the GastroPlus TM software tool for prediction of the toxicokinetic parameters of chemicals. SAR QSAR Environ Res 2018; 29:875-893. [PMID: 30286617 DOI: 10.1080/1062936x.2018.1518928] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 08/30/2018] [Indexed: 06/08/2023]
Abstract
The accurate prediction of toxicokinetic parameters arising from oral, dermal and inhalation routes of chemical exposure is a key element in chemical safety assessments. In this research, the physiologically based pharmacokinetic (PBPK) GastroPlusTM software was evaluated against a series of chemicals for the prediction of toxicokinetic parameters. Overall, 67% of predicted intrinsic clearance (Clint) values were within 1- to 10-fold of empirical data for 463 compounds, and 87% of the predicted fraction unbounded in plasma (Fup) values were 1- to 3-fold of empirical data for 441 compounds. The r2 (coefficient of determination) of predicted Cmax (maximum plasma concentration) and AUC (Area Under Curve) values versus the corresponding empirical values from oral, inhalation and dermal exposures ranged from 0.04 to 0.92. Among the three exposures, the highest r2 values, ranging from 0.80 to 0.92, were observed for oral exposure predictions, where 88% of the compounds had 1- to 10-fold differences between predicted and empirical values for Cmax and AUC. The predicted plasma Css (steady-state plasma concentration) values were consistent with those Css values calculated by in vitro-to-in vivo extrapolation (IVIVE) approaches using experimental parameters. Based on the evaluation results, GastroPlus™ can be used as a QSAR/PBPK tool for toxicokinetic parameter predictions.
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Affiliation(s)
- F Zhang
- a The Dow Chemical Company , Midland , MI , USA
| | - M Bartels
- b ToxMetrics.com LLC , Midland , MI , USA
| | - A Clark
- a The Dow Chemical Company , Midland , MI , USA
| | - T Erskine
- a The Dow Chemical Company , Midland , MI , USA
| | | | - B Bhhatarai
- c Novartis Institute for Biomedical Research , Cambridge , MA , USA
| | - D Wilson
- a The Dow Chemical Company , Midland , MI , USA
| | - S Marty
- a The Dow Chemical Company , Midland , MI , USA
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16
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Abstract
Whether hedonism or eudaimonia are two distinguishable forms of well-being is a topic of ongoing debate. To shed light on the relation between the two, large-scale available molecular genetic data were leveraged to gain more insight into the genetic architecture of the overlap between hedonic and eudaimonic well-being. Hence, we conducted the first genome-wide association studies (GWAS) of eudaimonic well-being (N = ~108 K) and linked it to a GWAS of hedonic well-being (N = ~222 K). We identified the first two genome-wide significant independent loci for eudaimonic well-being and six independent loci for hedonic well-being. Joint analyses revealed a moderate phenotypic correlation (r = 0.53) and a high genetic correlation (rg = 0.78) between eudaimonic and hedonic well-being. This indicates that the genetic etiology of hedonic and eudaimonic well-being is substantially shared, with divergent (environmental) factors contributing to their phenotypic divergence. Loci regulating expression showed significant enrichment in the brain cortex, brain cerebellum, frontal cortex, as well as the cerebellar hemisphere for eudaimonic well-being. No significant enrichment for hedonic well-being is observed, although brain tissues were top ranked. Genetic correlations patterns with a range of positive and negative related phenotypes were largely similar for hedonic -and eudaimonic well-being. Our results reveal a large overlap between the genes that influence hedonism and the genes that influence eudaimonia.
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Affiliation(s)
- B M L Baselmans
- Departement of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands.
- Amsterdam Public Health Institute, Amsterdam, The Netherlands.
| | - M Bartels
- Departement of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands
- Amsterdam Public Health Institute, Amsterdam, The Netherlands
- Neuroscience Amsterdam, Amsterdam, The Netherlands
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17
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Jelenkovic A, Yokoyama Y, Sund R, Hur YM, Harris JR, Brandt I, Nilsen TS, Ooki S, Ullemar V, Almqvist C, Magnusson PKE, Saudino KJ, Stazi MA, Fagnani C, Brescianini S, Nelson TL, Whitfield KE, Knafo-Noam A, Mankuta D, Abramson L, Cutler TL, Hopper JL, Llewellyn CH, Fisher A, Corley RP, Huibregtse BM, Derom CA, Vlietinck RF, Bjerregaard-Andersen M, Beck-Nielsen H, Sodemann M, Krueger RF, McGue M, Pahlen S, Alexandra Burt S, Klump KL, Dubois L, Boivin M, Brendgen M, Dionne G, Vitaro F, Willemsen G, Bartels M, van Beijsterveld CEM, Craig JM, Saffery R, Rasmussen F, Tynelius P, Heikkilä K, Pietiläinen KH, Bayasgalan G, Narandalai D, Haworth CMA, Plomin R, Ji F, Ning F, Pang Z, Rebato E, Tarnoki AD, Tarnoki DL, Kim J, Lee J, Lee S, Sung J, Loos RJF, Boomsma DI, Sørensen TIA, Kaprio J, Silventoinen K. Associations between birth size and later height from infancy through adulthood: An individual based pooled analysis of 28 twin cohorts participating in the CODATwins project. Early Hum Dev 2018; 120:53-60. [PMID: 29656171 PMCID: PMC6532975 DOI: 10.1016/j.earlhumdev.2018.04.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 09/25/2017] [Revised: 04/06/2018] [Accepted: 04/07/2018] [Indexed: 11/24/2022]
Abstract
BACKGROUND There is evidence that birth size is positively associated with height in later life, but it remains unclear whether this is explained by genetic factors or the intrauterine environment. AIM To analyze the associations of birth weight, length and ponderal index with height from infancy through adulthood within mono- and dizygotic twin pairs, which provides insights into the role of genetic and environmental individual-specific factors. METHODS This study is based on the data from 28 twin cohorts in 17 countries. The pooled data included 41,852 complete twin pairs (55% monozygotic and 45% same-sex dizygotic) with information on birth weight and a total of 112,409 paired height measurements at ages ranging from 1 to 69 years. Birth length was available for 19,881 complete twin pairs, with a total of 72,692 paired height measurements. The association between birth size and later height was analyzed at both the individual and within-pair level by linear regression analyses. RESULTS Within twin pairs, regression coefficients showed that a 1-kg increase in birth weight and a 1-cm increase in birth length were associated with 1.14-4.25 cm and 0.18-0.90 cm taller height, respectively. The magnitude of the associations was generally greater within dizygotic than within monozygotic twin pairs, and this difference between zygosities was more pronounced for birth length. CONCLUSION Both genetic and individual-specific environmental factors play a role in the association between birth size and later height from infancy to adulthood, with a larger role for genetics in the association with birth length than with birth weight.
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Affiliation(s)
- A Jelenkovic
- Department of Social Research, University of Helsinki, Helsinki, Finland, Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country UPV/EHU, Leioa, Spain
| | - Y Yokoyama
- Department of Public Health Nursing, Osaka City University, Osaka, Japan
| | - R Sund
- Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - YM Hur
- Department of Education, Mokpo National University, Jeonnam, South Korea
| | - JR Harris
- Norwegian Institute of Public Health, Oslo, Norway
| | - I Brandt
- Norwegian Institute of Public Health, Oslo, Norway
| | - TS Nilsen
- Norwegian Institute of Public Health, Oslo, Norway
| | - S Ooki
- Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
| | - V Ullemar
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - C Almqvist
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden, Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - PKE Magnusson
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - KJ Saudino
- Boston University, Department of Psychological and Brain Sciences, Boston, MA, USA
| | - MA Stazi
- Istituto Superiore di Sanità - Centre for Behavioural Sciences and Mental Health, Rome, Italy
| | - C Fagnani
- Istituto Superiore di Sanità - Centre for Behavioural Sciences and Mental Health, Rome, Italy
| | - S Brescianini
- Istituto Superiore di Sanità - Centre for Behavioural Sciences and Mental Health, Rome, Italy
| | - TL Nelson
- Department of Health and Exercise Sciences, Colorado School of Public Health, Colorado State University, USA
| | - KE Whitfield
- Psychology and Neuroscience, Duke University, Durham, NC, USA
| | - A Knafo-Noam
- The Hebrew University of Jerusalem, Jerusalem, Israel
| | - D Mankuta
- Hadassah Hospital Obstetrics and Gynecology Department, Hebrew University Medical School, Jerusalem, Israel
| | - L Abramson
- The Hebrew University of Jerusalem, Jerusalem, Israel
| | - TL Cutler
- The Australian Twin Registry, Centre for Epidemiology and Biostatistics, The University of Melbourne, Melbourne, Victoria, Australia
| | - JL Hopper
- The Australian Twin Registry, Centre for Epidemiology and Biostatistics, The University of Melbourne, Melbourne, Victoria, Australia, Department of Epidemiology, School of Public Health, Seoul National University, Seoul, South Korea
| | - CH Llewellyn
- Health Behaviour Research Centre, Department of Epidemiology and Public Health, Institute of Epidemiology and Health Care, University College London, London, UK
| | - A Fisher
- Health Behaviour Research Centre, Department of Epidemiology and Public Health, Institute of Epidemiology and Health Care, University College London, London, UK
| | - RP Corley
- Institute of Behavioral Science, University of Colorado, Boulder, CO, USA
| | - BM Huibregtse
- Institute of Behavioral Science, University of Colorado, Boulder, CO, USA
| | - CA Derom
- Centre of Human Genetics, University Hospitals Leuven, Leuven, Belgium, Department of Obstetrics and Gynaecology, Ghent University Hospitals, Ghent, Belgium
| | - RF Vlietinck
- Centre of Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - M Bjerregaard-Andersen
- Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau, Research Center for Vitamins and Vaccines, Statens Serum Institute, Copenhagen, Denmark, Department of Endocrinology, Odense University Hospital, Odense, Denmark
| | - H Beck-Nielsen
- Department of Endocrinology, Odense University Hospital, Odense, Denmark
| | - M Sodemann
- Department of Infectious Diseases, Odense University Hospital, Odense, Denmark
| | - RF Krueger
- Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | - M McGue
- Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | - S Pahlen
- Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | | | - KL Klump
- Michigan State University, East Lansing, MI, USA
| | - L Dubois
- School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - M Boivin
- École de psychologie, Université Laval, Québec, Canada, Institute of Genetic, Neurobiological, and Social Foundations of Child Development, Tomsk State University, Russian Federation
| | - M Brendgen
- Département de psychologie, Université du Québec à Montréal, Montréal, Québec, Canada
| | - G Dionne
- École de psychologie, Université Laval, Québec, Canada
| | - F Vitaro
- École de psychoéducation, Université de Montréal, Montréal, Québec, Canada
| | - G Willemsen
- Department of Biological Psychology, VU University Amsterdam, Amsterdam, Netherlands
| | - M Bartels
- Department of Biological Psychology, VU University Amsterdam, Amsterdam, Netherlands
| | - CEM van Beijsterveld
- Department of Biological Psychology, VU University Amsterdam, Amsterdam, Netherlands
| | - JM Craig
- Murdoch Childrens Research Institute, Royal Children’s Hospital, Parkville, Victoria, Australia, Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
| | - R Saffery
- Murdoch Childrens Research Institute, Royal Children’s Hospital, Parkville, Victoria, Australia, Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
| | - F Rasmussen
- Department of Health Sciences, Lund University, Sweden
| | - P Tynelius
- Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
| | - K Heikkilä
- Department of Public Health, University of Helsinki, Helsinki, Finland
| | - KH Pietiläinen
- Obesity Research Unit, Research Programs Unit, University of Helsinki, Helsinki, Finland
| | - G Bayasgalan
- Healthy Twin Association of Mongolia, Ulaanbaatar, Mongolia
| | - D Narandalai
- Healthy Twin Association of Mongolia, Ulaanbaatar, Mongolia, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - CMA Haworth
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
| | - R Plomin
- King’s College London, MRC Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, London, UK
| | - F Ji
- Department of Noncommunicable Diseases Prevention, Qingdao Centers for Disease Control and Prevention, Qingdao, China
| | - F Ning
- Department of Noncommunicable Diseases Prevention, Qingdao Centers for Disease Control and Prevention, Qingdao, China
| | - Z Pang
- Department of Noncommunicable Diseases Prevention, Qingdao Centers for Disease Control and Prevention, Qingdao, China
| | - E Rebato
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country UPV/EHU, Leioa, Spain
| | - AD Tarnoki
- Department of Radiology, Semmelweis University, Budapest, Hungary, Hungarian Twin Registry, Budapest, Hungary
| | - DL Tarnoki
- Department of Radiology, Semmelweis University, Budapest, Hungary, Hungarian Twin Registry, Budapest, Hungary
| | - J Kim
- Department of Epidemiology, School of Public Health, Seoul National University, Seoul, South Korea
| | - J Lee
- Department of Epidemiology, School of Public Health, Seoul National University, Seoul, South Korea
| | - S Lee
- Department of Epidemiology, School of Public Health, Seoul National University, Seoul, South Korea
| | - J Sung
- Department of Epidemiology, School of Public Health, Seoul National University, Seoul, South Korea, Institute of Health and Environment, Seoul National University, Seoul, South Korea
| | - RJF Loos
- The Charles Bronfman Institute for Personalized Medicine, The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - DI Boomsma
- Department of Biological Psychology, VU University Amsterdam, Amsterdam, Netherlands
| | - TIA Sørensen
- Novo Nordisk Foundation Centre for Basic Metabolic Research (Section of Metabolic Genetics), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark, Department of Public Health (Section of Epidemiology), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - J Kaprio
- Department of Public Health, University of Helsinki, Helsinki, Finland, Institute for Molecular Medicine FIMM, Helsinki, Finland
| | - K Silventoinen
- Department of Social Research, University of Helsinki, Helsinki, Finland, Osaka University Graduate School of Medicine, Osaka University, Osaka, Japan
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Abdellaoui A, Nivard MG, Hottenga JJ, Fedko I, Verweij KJH, Baselmans BML, Ehli EA, Davies GE, Bartels M, Boomsma DI, Cacioppo JT. Predicting loneliness with polygenic scores of social, psychological and psychiatric traits. Genes Brain Behav 2018; 17:e12472. [PMID: 29573219 DOI: 10.1111/gbb.12472] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/31/2018] [Accepted: 03/08/2018] [Indexed: 12/14/2022]
Abstract
Loneliness is a heritable trait that accompanies multiple disorders. The association between loneliness and mental health indices may partly be due to inherited biological factors. We constructed polygenic scores for 27 traits related to behavior, cognition and mental health and tested their prediction for self-reported loneliness in a population-based sample of 8798 Dutch individuals. Polygenic scores for major depressive disorder (MDD), schizophrenia and bipolar disorder were significantly associated with loneliness. Of the Big Five personality dimensions, polygenic scores for neuroticism and conscientiousness also significantly predicted loneliness, as did the polygenic scores for subjective well-being, tiredness and self-rated health. When including all polygenic scores simultaneously into one model, only 2 major depression polygenic scores remained as significant predictors of loneliness. When controlling only for these 2 MDD polygenic scores, only neuroticism and schizophrenia remain significant. The total variation explained by all polygenic scores collectively was 1.7%. The association between the propensity to feel lonely and the susceptibility to psychiatric disorders thus pointed to a shared genetic etiology. The predictive power of polygenic scores will increase as the power of the genome-wide association studies on which they are based increases and may lead to clinically useful polygenic scores that can inform on the genetic predisposition to loneliness and mental health.
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Affiliation(s)
- A Abdellaoui
- Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands.,Department of Psychiatry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - M G Nivard
- Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands
| | - J-J Hottenga
- Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands
| | - I Fedko
- Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands
| | - K J H Verweij
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - B M L Baselmans
- Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands.,Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - E A Ehli
- Avera Institute for Human Genetics, Sioux Falls, South Dakota
| | - G E Davies
- Avera Institute for Human Genetics, Sioux Falls, South Dakota
| | - M Bartels
- Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands.,Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - D I Boomsma
- Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands.,Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - J T Cacioppo
- Department of Psychology, University of Chicago, Chicago, Illinois
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19
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Hendriks AM, Bartels M, Colins OF, Finkenauer C. Childhood aggression: A synthesis of reviews and meta-analyses to reveal patterns and opportunities for prevention and intervention strategies. Neurosci Biobehav Rev 2018; 91:278-291. [PMID: 29580961 DOI: 10.1016/j.neubiorev.2018.03.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 12/14/2017] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 01/27/2023]
Abstract
This study provides a synthesis of meta-analyses and systematic reviews on non-pharmacological treatments for childhood aggression. Treatments referred to universal prevention, selective prevention, indicated prevention, or intervention (Mrazek and Haggerty, 1994). Seventy-two meta-analyses and systematic reviews met the inclusion criteria. We describe their characteristics, effect sizes across types of treatments, and the effects of various moderators. For universal and selective prevention, effects were mostly absent or small; for indicated prevention and interventions, effects were mostly small or medium. Only two moderators had a positive effect on treatment effectiveness, namely pre-test levels of aggression and parental involvement. These results identified similarities between indicated prevention and intervention treatments, on the one hand, and universal prevention and selective prevention, on the other. Our findings suggest that research distinguishing between targets of treatments (i.e., factors associated with childhood aggression vs. present aggressive behaviors) would be promising. Moreover, to further increase effectiveness of treatments for childhood aggression, individual differences warrant scientific attention.
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Affiliation(s)
- A M Hendriks
- Department of Biological Psychology, Vrije Universiteit Amsterdam, van den Boechorststraat 1, 1081 BT Amsterdam, The Netherlands; Amsterdam Public Health Research Institute, Amsterdam, The Netherlands.
| | - M Bartels
- Department of Biological Psychology, Vrije Universiteit Amsterdam, van den Boechorststraat 1, 1081 BT Amsterdam, The Netherlands; Amsterdam Public Health Research Institute, Amsterdam, The Netherlands.
| | - O F Colins
- Department of Child and Adolescent Psychiatry, Leiden University Medical Centre, Endegeesterstraatweg 27, 2342 AK Oegstgeest, The Netherlands.
| | - C Finkenauer
- Department of Biological Psychology, Vrije Universiteit Amsterdam, van den Boechorststraat 1, 1081 BT Amsterdam, The Netherlands; Interdisciplinary Social Sciences: Youth Studies, Utrecht University, Faculty of Social and Behavioural Sciences, Martinus J. Langeveld Building, Heidelberglaan 1, 3584 CH Utrecht, The Netherlands.
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20
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Heuvel EALVD, Baauw A, Mensink-Dillingh SJ, Bartels M. A rare disorder or not? How a child with jaundice changed a nationwide regimen in the Netherlands. J Community Genet 2017; 8:335-339. [PMID: 28914431 PMCID: PMC5614890 DOI: 10.1007/s12687-017-0330-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 04/02/2017] [Accepted: 09/03/2017] [Indexed: 11/28/2022] Open
Abstract
Due to global migration, there is an increased frequency of diseases, which used to be rare in Western countries. Here, we describe a striking case in order to create awareness for diseases that are known for decades but sometimes "forgotten" in Western countries, including glucose-6-phosphate dehydrogenase deficiency. We will discuss how everyday practice can lead to serious medical problems and present general recommendations to support.
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Affiliation(s)
- E A L van den Heuvel
- Department of Pediatrics, Gelderse Vallei Hospital, Ede, the Netherlands. .,Department of Pediatric Hematology and Stem Cell Transplantation, University Medical Center Utrecht, Lundlaan 6, 3508, AB, Utrecht, the Netherlands.
| | - A Baauw
- Department of Pediatrics, Rijnstate Hospital, Arnhem, the Netherlands.,Taskforce Refugee and Migrant Children; Committee International Child Health, Dutch Society of Pediatrics, Utrecht, the Netherlands
| | | | - M Bartels
- Department of Pediatric Hematology and Stem Cell Transplantation, University Medical Center Utrecht, Lundlaan 6, 3508, AB, Utrecht, the Netherlands
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21
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Van 't Ent D, den Braber A, Baselmans BML, Brouwer RM, Dolan CV, Hulshoff Pol HE, de Geus EJC, Bartels M. Associations between subjective well-being and subcortical brain volumes. Sci Rep 2017; 7:6957. [PMID: 28761095 PMCID: PMC5537231 DOI: 10.1038/s41598-017-07120-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 02/03/2017] [Accepted: 06/21/2017] [Indexed: 12/26/2022] Open
Abstract
To study the underpinnings of individual differences in subjective well-being (SWB), we tested for associations of SWB with subcortical brain volumes in a dataset of 724 twins and siblings. For significant SWB-brain associations we probed for causal pathways using Mendelian Randomization (MR) and estimated genetic and environmental contributions from twin modeling. Another independent measure of genetic correlation was obtained from linkage disequilibrium (LD) score regression on published genome-wide association summary statistics. Our results indicated associations of SWB with hippocampal volumes but not with volumes of the basal ganglia, thalamus, amygdala, or nucleus accumbens. The SWB-hippocampus relations were nonlinear and characterized by lower SWB in subjects with relatively smaller hippocampal volumes compared to subjects with medium and higher hippocampal volumes. MR provided no evidence for an SWB to hippocampal volume or hippocampal volume to SWB pathway. This was in line with twin modeling and LD-score regression results which indicated non-significant genetic correlations. We conclude that low SWB is associated with smaller hippocampal volume, but that genes are not very important in this relationship. Instead other etiological factors, such as exposure to stress and stress hormones, may exert detrimental effects on SWB and the hippocampus to bring about the observed association.
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Affiliation(s)
- D Van 't Ent
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands. .,Amsterdam Neuroscience, Amsterdam, The Netherlands.
| | - A den Braber
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands.,Amsterdam Neuroscience, Amsterdam, The Netherlands.,Alzheimer Center and Department of Neurology, VU University Medical Center, Amsterdam, The Netherlands
| | - B M L Baselmans
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands.,EMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
| | - R M Brouwer
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, Utrecht, The Netherlands
| | - C V Dolan
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - H E Hulshoff Pol
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, Utrecht, The Netherlands
| | - E J C de Geus
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands.,EMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands.,Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - M Bartels
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands.,EMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands.,Amsterdam Neuroscience, Amsterdam, The Netherlands
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22
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Aggarwal M, Terry C, Murphy L, Bartels M, Rasoulpour R. Toxicological testing rationale for acid and/or ester forms of an agrochemical: halauxifen acid and halauxifen-methyl (Arylex™). Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Aggarwal M, Papineni S, Terry C, Rasoulpour R, Murphy L, Bartels M. Innovative strategies for agrochemical safety assessments: Use of toxicokinetic data for Arylex™ and Rinskor™. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Muhl B, Wiltberger G, Krenzien F, Benzing C, Atanasov G, Horn M, Hau HM, Bartels M. Präoperative Risikostratifizierung für Major Komplikationen nach Pankreatikoduodenektomien: Risiko-Score zur Identifizierung von Hoch-Risiko-Patienten. Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1586279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Huppertz C, Bartels M, de Geus EJC, van Beijsterveldt CEM, Rose RJ, Kaprio J, Silventoinen K. The effects of parental education on exercise behavior in childhood and youth: a study in Dutch and Finnish twins. Scand J Med Sci Sports 2016; 27:1143-1156. [PMID: 27455885 DOI: 10.1111/sms.12727] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/14/2016] [Indexed: 12/26/2022]
Abstract
Twin studies have estimated the relative contribution of genes and the environment to variance in exercise behavior and it is known that parental education positively affects exercise levels. This study investigates the role of parental education as a potential modifier of variance in exercise behavior from age 7 to 18 years. The study is based on large datasets from the Netherlands Twin Register (NTR: N = 24 874 twins; surveys around the ages of 7, 10, 12, 14, 16 and 18 years) and two Finnish twin cohorts (FinnTwin12: N = 4399; 12, 14 and 17 years; FinnTwin16: N = 4648; 16, 17 and 18 years). Regular participation in moderate-to-vigorous exercise activities during leisure time was assessed by survey. Parental education was dichotomized ("both parents with a low education" vs "at least one parent with a high education"). The mean in exercise behavior tended to be higher and the variance tended to be lower in children of high educated parents. Evidence for gene-by-environment interaction was weak. To develop successful interventions that specifically target children of low educated parents, the mechanisms causing the mean and variance differences between the two groups should be better understood.
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Affiliation(s)
- C Huppertz
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Department of Public and Occupational Health, VU University Medical Center Amsterdam, Amsterdam, The Netherlands.,EMGO+, Institute for Health and Care Research, Amsterdam, The Netherlands
| | - M Bartels
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,EMGO+, Institute for Health and Care Research, Amsterdam, The Netherlands
| | - E J C de Geus
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,EMGO+, Institute for Health and Care Research, Amsterdam, The Netherlands
| | - C E M van Beijsterveldt
- Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - R J Rose
- Department of Psychological & Brain Sciences, Indiana University, Bloomington, Indiana, USA
| | - J Kaprio
- Department of Public Health, University of Helsinki, Helsinki, Finland.,Institute of Molecular Medicine FIMM, University of Helsinki, Helsinki, Finland.,Department of Health, National Institute for Health and Welfare, Helsinki, Finland
| | - K Silventoinen
- Department of Social Research, University of Helsinki, Helsinki, Finland
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Dolan CV, Geels L, Vink JM, van Beijsterveldt CEM, Neale MC, Bartels M, Boomsma DI. Testing Causal Effects of Maternal Smoking During Pregnancy on Offspring's Externalizing and Internalizing Behavior. Behav Genet 2016; 46:378-88. [PMID: 26324285 PMCID: PMC4826626 DOI: 10.1007/s10519-015-9738-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [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] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 08/18/2015] [Indexed: 12/31/2022]
Abstract
Maternal smoking during pregnancy (SDP) is associated with increased risk of externalizing and internalizing behaviors in offspring. Two explanations (not mutually exclusive) for this association are direct causal effects of maternal SDP and the effects of genetic and environmental factors common to parents and offspring which increase smoking as well as problem behaviors. Here, we examined the associations between parental SDP and mother rated offspring externalizing and internalizing behaviors (rated by the Child Behavior Checklist/2-3) at age three in a population-based sample of Dutch twins (N = 15,228 pairs). First, as a greater effect of maternal than of paternal SDP is consistent with a causal effect of maternal SDP, we compared the effects of maternal and paternal SDP. Second, as a beneficial effect of quitting smoking before pregnancy is consistent with the causal effect, we compared the effects of SDP in mothers who quit smoking before pregnancy, and mothers who continued to smoke during pregnancy. All mothers were established smokers before their pregnancy. The results indicated a greater effect of maternal SDP, compared to paternal SDP, for externalizing, aggression, overactive and withdrawn behavior. Quitting smoking was associated with less externalizing, overactive behavior, aggression, and oppositional behavior, but had no effect on internalizing, anxious depression, or withdrawn behavior. We conclude that these results are consistent with a causal, but small, effect of smoking on externalizing problems at age 3. The results do not support a causal effect of maternal SDP on internalizing behaviors.
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Affiliation(s)
- C V Dolan
- Department of Biological Psychology, Netherlands Twin Register, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands
| | - L Geels
- Department of Biological Psychology, Netherlands Twin Register, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands
| | - J M Vink
- Department of Biological Psychology, Netherlands Twin Register, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands
- Neuroscience Campus Amsterdam, Amsterdam, The Netherlands
| | - C E M van Beijsterveldt
- Department of Biological Psychology, Netherlands Twin Register, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands
| | - M C Neale
- Department of Biological Psychology, Netherlands Twin Register, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA
| | - M Bartels
- Department of Biological Psychology, Netherlands Twin Register, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands
- EMGO+ Institute for Health and Care Research, VU University Medical Centre, Amsterdam, The Netherlands
- Neuroscience Campus Amsterdam, Amsterdam, The Netherlands
| | - Dorret I Boomsma
- Department of Biological Psychology, Netherlands Twin Register, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands.
- EMGO+ Institute for Health and Care Research, VU University Medical Centre, Amsterdam, The Netherlands.
- Neuroscience Campus Amsterdam, Amsterdam, The Netherlands.
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Wesseldijk LW, Dieleman GC, Lindauer RJL, Bartels M, Willemsen G, Hudziak JJ, Boomsma DI, Middeldorp CM. Spousal resemblance in psychopathology: A comparison of parents of children with and without psychopathology. Eur Psychiatry 2016; 34:49-55. [PMID: 26928346 DOI: 10.1016/j.eurpsy.2016.01.2423] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 01/20/2016] [Accepted: 01/20/2016] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Spouses resemble each other for psychopathology, but data regarding spousal resemblance in externalizing psychopathology, and data regarding spousal resemblance across different syndromes (e.g. anxiety in wives and attention deficit/hyperactivity disorder [ADHD] in husbands) are limited. Moreover, knowledge is lacking regarding spousal resemblance in parents of children with psychiatric disorders. We investigated and compared spousal resemblance within and across internalizing and externalizing symptom domains in parents of children with and without psychopathology. METHODS Symptoms of depression, anxiety, avoidant personality, ADHD, and antisocial personality were assessed with the Adult Self Report in 728 mothers and 544 fathers of 778 children seen in child and adolescent psychiatric outpatient clinics and in 2075 mothers and 1623 fathers of 2784 children from a population-based sample. Differences in symptom scores and spousal correlations between the samples were tested. RESULTS Parents in the clinical sample had higher symptom scores than in the population-based sample. In both samples, correlations within and across internalizing and externalizing domains of psychopathology were significant. Importantly, correlations were significantly higher in the clinical sample (P=0.03). Correlations, within and across symptoms, ranged from 0.14 to 0.30 in the clinical sample and from 0.05 to 0.23 in the population-based sample. CONCLUSIONS This large study shows that spousal resemblance is not only present within but also across symptom domains. Especially in the clinical sample, ADHD symptoms in fathers and antisocial personality symptoms in mothers were correlated with a range of psychiatric symptoms in their spouses. Clinicians need to be alert of these multiple affected families.
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Affiliation(s)
- L W Wesseldijk
- Department of Biological Psychology, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands; EMGO+ Institute for Health and Care Research, VU University Medical Centre, Amsterdam, The Netherlands.
| | - G C Dieleman
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus Medical Center Rotterdam/Sophia Children's Hospital, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands
| | - R J L Lindauer
- Department of Child and Adolescent Psychiatry, Academic Medical Center, Meibergdreef 5, 1105 AZ Amsterdam, The Netherlands; De Bascule, Academic Center for Child and Adolescent Psychiatry, Amsterdam, The Netherlands
| | - M Bartels
- Department of Biological Psychology, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands; EMGO+ Institute for Health and Care Research, VU University Medical Centre, Amsterdam, The Netherlands; Neuroscience Campus Amsterdam, Amsterdam, The Netherlands
| | - G Willemsen
- Department of Biological Psychology, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands; EMGO+ Institute for Health and Care Research, VU University Medical Centre, Amsterdam, The Netherlands
| | - J J Hudziak
- Department of Psychiatry and Medicine (Division of Human Genetics), Center for Children, Youth and Families, University of Vermont, B229 Given B, Burlington, VT 05405, USA
| | - D I Boomsma
- Department of Biological Psychology, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands; EMGO+ Institute for Health and Care Research, VU University Medical Centre, Amsterdam, The Netherlands; Neuroscience Campus Amsterdam, Amsterdam, The Netherlands
| | - C M Middeldorp
- Department of Biological Psychology, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands; Neuroscience Campus Amsterdam, Amsterdam, The Netherlands; Department of Child and Adolescent Psychiatry, GGZ inGeest/VU University Medical Center, Amsterdam, The Netherlands
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Tautenhahn HM, Brückner S, Pankow F, Uder C, Brach J, Gittel C, Hempel M, Berthold C, Lange UG, Broschewitz J, Dietel C, Bartels M, Pietsch UC, Christ B. Stammzelltherapie bei ausgedehnter Leberresektion im Schwein. Z Gastroenterol 2015. [DOI: 10.1055/s-0035-1568061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hau HM, Schmelzle M, Benzing C, Ascherl R, Tautenhahn HM, Gäbelein G, Eichfeld U, Bartels M. Pulmonary metastasectomy for metastasized hepatocellular carcinoma after liver resection and liver transplantation: a single center experience. Z Gastroenterol 2015; 54:31-9. [PMID: 26619391 DOI: 10.1055/s-0041-104025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND The role of surgery in the treatment of metastasized hepatocellular carcinoma (HCC) remains uncertain. We here report our single centre experience with pulmonary metastasectomy (PM) for metachronous HCC metastases to the lung following curative liver resection (LR) and liver transplantation (LT), respectively. METHODS Of 270 patients with HCC being treated by LR or LT at the University Hospital of Leipzig between January 1996 and July 2014, PM was performed in the follow up of 10 patients because of metachronous pulmonary HCC metastases. We retrospectively analyzed demographic and clinicopathological factors as well as the outcome after primary and secondary tumor treatment in these patients. RESULTS Following LR/LT and metastasectomy, respectively, mean overall survival was 4.58 ± 0.84 years and 2.4 ± 0.69 years. Postoperative morbidity after primary and secondary tumor treatment was 30 % and 20 %, respectively. Perioperative 30-day mortality was 0 %. Univariate analysis suggest tumor grading (p < 0.05), and a disease free-intervall > 1 year (p = 0.02) as significant prognostic parameters for survival in our collective. CONCLUSION PM can be performed safely with a reasonable morbidity even in immunosuppressed patients after LT. Further studies are needed to evaluate whether PM can increase long-term survival in selected patients with resectable metastases and represents an alternative or additive treatment modality to the protein kinase inhibitor sorafenib.
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Affiliation(s)
- H M Hau
- Department of General, Visceral, Thoracic and Transplant Surgery, University Hospital Leipzig, Germany
| | - M Schmelzle
- Department of General, Visceral, Thoracic and Transplant Surgery, University Hospital Leipzig, Germany
| | - C Benzing
- Department of General, Visceral, Thoracic and Transplant Surgery, University Hospital Leipzig, Germany
| | - R Ascherl
- Department of General, Visceral, Thoracic and Transplant Surgery, University Hospital Leipzig, Germany
| | - H M Tautenhahn
- Department of General, Visceral, Thoracic and Transplant Surgery, University Hospital Leipzig, Germany
| | - G Gäbelein
- Department of General, Visceral, Thoracic and Transplant Surgery, University Hospital Leipzig, Germany
| | - U Eichfeld
- Department of General, Visceral, Thoracic and Transplant Surgery, University Hospital Leipzig, Germany
| | - M Bartels
- Department of General, Visceral, Thoracic and Transplant Surgery, University Hospital Leipzig, Germany
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Lübbert C, Hau HM, Rodloff A, Mössner J, Mischnik A, Bercker S, Bartels M, Kaisers UX. [Clinical impact of infections with carbapenem-resistant enterobacteriaceae in liver transplant recipients]. Z Gastroenterol 2015; 53:1276-87. [PMID: 26562402 DOI: 10.1055/s-0041-106855] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Infections with carbapenem-resistant Enterobacteriaceae (CRE) are an emerging cause of morbidity and mortality among liver transplant recipients (LTR) worldwide, particularly Klebsiella pneumoniae carbapenemase (KPC)-producing organisms. Approximately 3 - 13 % of solid organ transplant recipients in CRE-endemic areas develop CRE infections, and the infection site correlates with the transplanted organ. The cumulative 30-day mortality rate of LTR infected with carbapenem-resistant K. pneumoniae is 36 %, and the 180-day mortality rate is 58 %. Awareness of the high vulnerability of LTR to fatal bacterial infection leads to the more frequent use of ultrabroad-spectrum empirical antibiotic therapy, which further contributes to the selection of extreme drug resistance. Moreover, it comprises a relevant risk of failure to initiate adequate empirical treatment due to the fact that culture-based techniques used to identify CRE imply a 48- to 72-hour delay from blood culture collection until administration of the targeted therapy. This vicious circle is difficult to avoid and leads to increased clinical intricacy and narrowed antimicrobial therapeutic options. Because available options are extremely limited, infection prevention measures have gained outstanding importance, particularly in the phase after liver transplant requiring intense immunosuppression early on. Improving clinical outcomes is a major challenge and involves a multi-targeted approach combining strictly applied hygiene measures, active surveillance tests, the use of modern, time-saving methods of molecular biology, and enforced antibiotic stewardship. This article reviews the current literature regarding the incidence and outcome of CRE infections in LTR, and it summarises current preventive and therapeutic recommendations to minimise the threat by CRE in real-life clinical transplant settings.
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Affiliation(s)
- C Lübbert
- Fachbereich Infektions- und Tropenmedizin, Klinik für Gastroenterologie und Rheumatologie, Universitätsklinikum Leipzig
| | - H M Hau
- Klinik für Viszeral-, Gefäß-, Thorax- und Transplantationschirurgie, Universitätsklinikum Leipzig
| | - A Rodloff
- Institut für Medizinische Mikrobiologie und Infektionsepidemiologie, Universitätsklinikum Leipzig
| | - J Mössner
- Klinik für Gastroenterologie und Rheumatologie, Universitätsklinikum Leipzig
| | - A Mischnik
- Abteilung Infektiologie, Klinik für Innere Medizin II, Universitätsklinikum Freiburg
| | - S Bercker
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Leipzig
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Bartels M, Krenkel M, Cloetens P, Möbius W, Salditt T. Myelinated mouse nerves studied by X-ray phase contrast zoom tomography. J Struct Biol 2015; 192:561-568. [PMID: 26546551 DOI: 10.1016/j.jsb.2015.11.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 10/29/2015] [Accepted: 11/02/2015] [Indexed: 12/28/2022]
Abstract
We have used X-ray phase contrast tomography to resolve the structure of uncut, entire myelinated optic, saphenous and sciatic mouse nerves. Intrinsic electron density contrast suffices to identify axonal structures. Specific myelin labeling by an osmium tetroxide stain enables distinction between axon and surrounding myelin sheath. Utilization of spherical wave illumination enables zooming capabilities which enable imaging of entire sciatic internodes as well as identification of sub-structures such as nodes of Ranvier and Schmidt-Lanterman incisures.
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Affiliation(s)
- M Bartels
- Institut für Röntgenphysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany.
| | - M Krenkel
- Institut für Röntgenphysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - P Cloetens
- ESRF - The European Synchrotron, 38043 Grenoble, France
| | - W Möbius
- Max-Planck-Institut für Exp. Medizin, Hermann-Rein-Straße 3, 37075 Göttingen, Germany; Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), Göttingen, Germany
| | - T Salditt
- Institut für Röntgenphysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany; Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), Göttingen, Germany.
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Langer E, Schrey S, Bartels M, Lordick F, Stepan H. Zufallsbefund eines großen Gastrointestinalen Stromatumor (GIST) mit Leitsymptom „akutes Abdomen“ im dritten Trimenon. Z Geburtshilfe Neonatol 2015. [DOI: 10.1055/s-0035-1566616] [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: 10/22/2022]
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Terry C, Hays S, McCoy A, Aggarwal M, McFadden L, Bartels M, Billington R. Developing a framework for integrating toxicokinetics into human health risk assessment for chemicals. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Winkler S, Hempel M, Brückner S, Mallek F, Weise A, Liehr T, Tautenhahn HM, Bartels M, Christ B. Mouse white adipose tissue-derived mesenchymal stem cells gain pericentral and periportal hepatocyte features after differentiation in vitro, which are preserved in vivo after hepatic transplantation. Acta Physiol (Oxf) 2015; 215:89-104. [PMID: 26235702 DOI: 10.1111/apha.12560] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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: 07/06/2015] [Revised: 07/17/2015] [Accepted: 07/29/2015] [Indexed: 12/13/2022]
Abstract
AIM Mesenchymal stem cells may differentiate into hepatocyte-like cells in vitro and in vivo. Therefore, they are considered a novel cell resource for the treatment of various liver diseases. Here, the aim was to demonstrate that mesenchymal stem cells may adopt both perivenous and periportal hepatocyte-specific functions in vitro and in vivo. METHODS Adipose tissue-derived mesenchymal stem cells were isolated from immunodeficient C57BL/6 (B6.129S6-Rag2(tm1Fwa) Prf1(tm1Clrk) ) mice and differentiated into the hepatocytic phenotype by applying a simple protocol. Their physiological and metabolic functions were analysed in vitro and after hepatic transplantation in vivo. RESULTS Mesenchymal stem cells changed their morphology from a fibroblastoid into shapes of osteocytes, chondrocytes, adipocytes and hepatocytes. Typical for mesenchymal stem cells, hematopoietic marker genes were not expressed. CD90, which is not expressed on mature hepatocytes, decreased significantly after hepatocytic differentiation. Markers indicative for liver development like hepatic nuclear factor 4 alpha, or for perivenous hepatocyte specification like cytochrome P450 subtype 3a11, and CD26 were significantly elevated. Periportal hepatocyte-specific markers like carbamoylphosphate synthetase 1, the entry enzyme of the urea cycle, were up-regulated. Consequently, cytochrome P450 enzyme activity and urea synthesis increased significantly to values comparable to cultured primary hepatocytes. Both perivenous and periportal qualities were preserved after hepatic transplantation and integration into the host parenchyma. CONCLUSIONS Adult mesenchymal stem cells from adipose tissue differentiated into hepatocyte-like cells featuring both periportal and perivenous functions. Hence, they are promising candidates for the treatment of region-specific liver cell damage and may support organ regeneration in acute and chronic liver diseases.
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Affiliation(s)
- S. Winkler
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - M. Hempel
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - S. Brückner
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - F. Mallek
- Jena University Hospital; Institute of Human Genetics; Friedrich Schiller University; Jena Germany
| | - A. Weise
- Jena University Hospital; Institute of Human Genetics; Friedrich Schiller University; Jena Germany
| | - T. Liehr
- Jena University Hospital; Institute of Human Genetics; Friedrich Schiller University; Jena Germany
| | - H.-M. Tautenhahn
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
- Translational Centre for Regenerative Medicine (TRM); University of Leipzig; Leipzig Germany
- Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - M. Bartels
- Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - B. Christ
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
- Translational Centre for Regenerative Medicine (TRM); University of Leipzig; Leipzig Germany
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Huppertz C, Bartels M, van Beijsterveldt CEM, Willemsen G, Hudziak JJ, de Geus EJC. Regular exercise behaviour in youth is not related to current body mass index or body mass index at 7-year follow-up. Obes Sci Pract 2015; 1:1-11. [PMID: 29071093 PMCID: PMC5523672 DOI: 10.1002/osp4.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 02/09/2015] [Accepted: 03/08/2015] [Indexed: 11/25/2022] Open
Abstract
Objective This population‐based study aimed (1) to test the presence of an association between regular voluntary exercise behaviour (EB) that is performed in leisure time and body mass index (BMI) in youth and (2) to investigate the causal nature of this association using a longitudinal design in genetically informative subjects. Design and methods Both EB and BMI were assessed repeatedly over time in 21 458 twin individuals from the Netherlands Twin Register (47.5% male) – first by parental report (ages 7, 10 and 12) and subsequently through self‐report surveys (ages 14, 16 and 18). EB was quantified as weekly metabolic equivalent of task hours. Results Correlations over time were higher for BMI than for EB (r ≈ 0.70 vs. r ≈ 0.35) across 12 different follow‐up periods. Cross‐sectionally, regular involvement in EB was not associated with lower BMI in childhood and in genetically identical twin pairs discordant for EB; the exercising twin did not have a lower BMI than the non‐exercising twin. Longitudinally, linear and quadratic relationships between EB and BMI were non‐significant. Changes in EB over time did not induce opposite changes in BMI. Conclusions No consistent association between regular EB and BMI was observed from ages 7 to 18 years.
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Affiliation(s)
- C Huppertz
- Department of Biological Psychology VU University Amsterdam Amsterdam The Netherlands.,EMGO+ Institute for Health and Care Research VU University Medical Center Amsterdam The Netherlands
| | - M Bartels
- Department of Biological Psychology VU University Amsterdam Amsterdam The Netherlands.,EMGO+ Institute for Health and Care Research VU University Medical Center Amsterdam The Netherlands
| | | | - G Willemsen
- Department of Biological Psychology VU University Amsterdam Amsterdam The Netherlands.,EMGO+ Institute for Health and Care Research VU University Medical Center Amsterdam The Netherlands
| | - J J Hudziak
- Department of Biological Psychology VU University Amsterdam Amsterdam The Netherlands.,Department of Psychiatry, Medicine and Pediatrics, Vermont Center for Children, Youth and Families, College of Medicine University of Vermont, UHC Campus Burlington VT USA
| | - E J C de Geus
- Department of Biological Psychology VU University Amsterdam Amsterdam The Netherlands.,EMGO+ Institute for Health and Care Research VU University Medical Center Amsterdam The Netherlands
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Wilke RN, Hoppert M, Krenkel M, Bartels M, Salditt T. Quantitative X-ray phase contrast waveguide imaging of bacterial endospores. J Appl Crystallogr 2015; 48:464-476. [PMID: 25844079 PMCID: PMC4379437 DOI: 10.1107/s1600576715003593] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 11/13/2014] [Accepted: 02/20/2015] [Indexed: 01/22/2023] Open
Abstract
Quantitative X-ray phase contrast imaging uniquely offers quantitative imaging information in terms of electron density maps allowing for mass and mass density determinations of soft biological samples (‘weighing with light’). Here, it was carried out using coherent X-ray waveguide illumination, yielding values of the mass and mass density of freeze-dried bacterial endospores (Bacillus spp.). Quantitative waveguide-based X-ray phase contrast imaging has been carried out on the level of single, unstained, unsliced and freeze-dried bacterial cells of Bacillus thuringiensis and Bacillus subtilis using hard X-rays of 7.9 keV photon energy. The cells have been prepared in the metabolically dormant state of an endospore. The quantitative phase maps obtained by iterative phase retrieval using a modified hybrid input–output algorithm allow for mass and mass density determinations on the level of single individual endospores but include also large field of view investigations. Additionally, a direct reconstruction based on the contrast transfer function is investigated, and the two approaches are compared. Depending on the field of view and method, a resolution down to 65 nm was achieved at a maximum applied dose of below 5 × 105 Gy. Masses in the range of about ∼110–190 (20) fg for isolated endospores have been obtained.
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Affiliation(s)
- R N Wilke
- University of Göttingen, Institute for X-ray Physics, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - M Hoppert
- University of Göttingen, Institute of Microbiology and Genetics, Grisebachstrasse 8, 37077 Göttingen, Germany
| | - M Krenkel
- University of Göttingen, Institute for X-ray Physics, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - M Bartels
- University of Göttingen, Institute for X-ray Physics, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany ; Philips Research, Hamburg, Germany
| | - T Salditt
- University of Göttingen, Institute for X-ray Physics, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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Nivard MG, Dolan CV, Kendler KS, Kan KJ, Willemsen G, van Beijsterveldt CEM, Lindauer RJL, van Beek JHDA, Geels LM, Bartels M, Middeldorp CM, Boomsma DI. Stability in symptoms of anxiety and depression as a function of genotype and environment: a longitudinal twin study from ages 3 to 63 years. Psychol Med 2015; 45:1039-1049. [PMID: 25187475 DOI: 10.1017/s003329171400213x] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND The influence of genetic factors on major depressive disorder is lower than on other psychiatric disorders. Heritability estimates mainly derive from cross-sectional studies, and knowledge on the longitudinal aetiology of symptoms of anxiety and depression (SxAnxDep) across the lifespan is limited. We aimed to assess phenotypic, genetic and environmental stability in SxAnxDep between ages 3 and 63 years. METHOD We used a cohort-sequential design combining data from 49 524 twins followed from birth to age ⩾20 years, and from adolescence into adulthood. SxAnxDep were assessed repeatedly with a maximum of eight assessments over a 25-year period. Data were ordered in 30 age groups and analysed with longitudinal genetic models. RESULTS Over age, there was a significant increase during adolescence in mean scores with sex differences (women>men) emerging. Heritability was high in childhood and decreased to 30-40% during adulthood. This decrease in heritability was due to an increase in environmental variance. Phenotypic stability was moderate in children (correlations across ages ~0.5) and high in adolescents (r = 0.6), young adults (r = 0.7), and adults (r = 0.8). Longitudinal stability was mostly attributable to genetic factors. During childhood and adolescence there was also significant genetic innovation, which was absent in adults. Environmental effects contributed to short-term stability. CONCLUSIONS The substantial stability in SxAnxDep is mainly due to genetic effects. The importance of environmental effects increases with age and explains the relatively low heritability of depression in adults. The environmental effects are transient, but the contribution to stability increases with age.
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Affiliation(s)
- M G Nivard
- Department of Biological Psychology,VU University Amsterdam,The Netherlands
| | - C V Dolan
- Department of Biological Psychology,VU University Amsterdam,The Netherlands
| | - K S Kendler
- Departments of Psychiatry and Human and Molecular Genetics,Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University,USA
| | - K J Kan
- Department of Biological Psychology,VU University Amsterdam,The Netherlands
| | - G Willemsen
- Department of Biological Psychology,VU University Amsterdam,The Netherlands
| | | | - R J L Lindauer
- Department of Child and Adolescent Psychiatry,Amsterdam Medical Center,Amsterdam,The Netherlands
| | - J H D A van Beek
- Department of Biological Psychology,VU University Amsterdam,The Netherlands
| | - L M Geels
- Department of Biological Psychology,VU University Amsterdam,The Netherlands
| | - M Bartels
- Department of Biological Psychology,VU University Amsterdam,The Netherlands
| | - C M Middeldorp
- Department of Biological Psychology,VU University Amsterdam,The Netherlands
| | - D I Boomsma
- Department of Biological Psychology,VU University Amsterdam,The Netherlands
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Bartels M, Krenkel M, Haber J, Wilke RN, Salditt T. X-ray holographic imaging of hydrated biological cells in solution. Phys Rev Lett 2015; 114:048103. [PMID: 25679911 DOI: 10.1103/physrevlett.114.048103] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Indexed: 05/24/2023]
Abstract
We demonstrate nanoscale x-ray holographic imaging using optimized illumination wave fronts emitted by x-ray waveguide channels. Mode filtering minimizes wave-front distortions and artifacts encountered in most hard x-ray focusing schemes, enabling quantitative reconstruction of the projected density, as evidenced by a test pattern imaged with a field of view of about 20×40 μm and at 22 nm resolution. The dose efficiency and contrast sensitivity make the optical scheme compatible with samples of intrinsically low contrast, typical for hydrated soft matter. This is demonstrated by imaging bacteria in the hydrated and living state, with quantitative phase contrast revealing dense structures of the bacterial nucleoids associated with compactified DNA. In response to continued irradiation, characteristic changes in these dense structures are observed.
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Affiliation(s)
- M Bartels
- Institut für Röntgenphysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, Göttingen 37077, Germany
| | - M Krenkel
- Institut für Röntgenphysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, Göttingen 37077, Germany
| | - J Haber
- Institut für Röntgenphysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, Göttingen 37077, Germany
| | - R N Wilke
- Institut für Röntgenphysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, Göttingen 37077, Germany
| | - T Salditt
- Institut für Röntgenphysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, Göttingen 37077, Germany
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de Zeeuw EL, van Beijsterveldt CEM, Glasner TJ, Bartels M, Ehli EA, Davies GE, Hudziak JJ, Rietveld CA, Groen-Blokhuis MM, Hottenga JJ, de Geus EJC, Boomsma DI. Polygenic scores associated with educational attainment in adults predict educational achievement and ADHD symptoms in children. Am J Med Genet B Neuropsychiatr Genet 2014; 165B:510-20. [PMID: 25044548 DOI: 10.1002/ajmg.b.32254] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [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: 03/15/2014] [Accepted: 06/02/2014] [Indexed: 12/31/2022]
Abstract
The American Psychiatric Association estimates that 3 to 7 per cent of all school aged children are diagnosed with attention deficit hyperactivity disorder (ADHD). Even after correcting for general cognitive ability, numerous studies report a negative association between ADHD and educational achievement. With polygenic scores we examined whether genetic variants that have a positive influence on educational attainment have a protective effect against ADHD. The effect sizes from a large GWA meta-analysis of educational attainment in adults were used to calculate polygenic scores in an independent sample of 12-year-old children from the Netherlands Twin Register. Linear mixed models showed that the polygenic scores significantly predicted educational achievement, school performance, ADHD symptoms and attention problems in children. These results confirm the genetic overlap between ADHD and educational achievement, indicating that one way to gain insight into genetic variants responsible for variation in ADHD is to include data on educational achievement, which are available at a larger scale.
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Affiliation(s)
- Eveline L de Zeeuw
- Department of Biological Psychology, VU University, Amsterdam, the Netherlands; EMGO+ Institute for Health and Care Research, VU University Medical Centre, Amsterdam, the Netherlands
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Lübbert C, Rodloff A, Laudi S, Simon P, Busch T, Mössner J, Bartels M, Kaisers U. Excess mortality due to KPC-producing Klebsiella pneumoniae in liver transplant recipients. Int J Infect Dis 2014. [DOI: 10.1016/j.ijid.2014.03.1279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Lübbert C, Becker-Rux D, Rodloff AC, Laudi S, Busch T, Bartels M, Kaisers UX. Colonization of liver transplant recipients with KPC-producing Klebsiella pneumoniae is associated with high infection rates and excess mortality: a case–control analysis. Infection 2013; 42:309-16. [DOI: 10.1007/s15010-013-0547-3] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 10/23/2013] [Indexed: 11/25/2022]
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42
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Müller M, Dewitz R, Bongard S, Schlößer R, Bartels M, Allendorf A. Psychoemotionale Entwicklung von Frühgeborenen im Alter von zwei Jahren. Z Geburtshilfe Neonatol 2013. [DOI: 10.1055/s-0033-1361234] [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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Grallert M, Uhlmann D, Bartels M, Steinert M. [VATS lobectomy--a standard procedure in the therapy for stage I non-small cell lung cancer?]. Zentralbl Chir 2013; 138 Suppl 1:S40-4. [PMID: 24150854 DOI: 10.1055/s-0033-1350854] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Even though VATS lobectomy has been practised since 1991 in stage I of non-small cell lung cancer (NSCLC), it was not being considered equivalent to conventional lobectomy due to considerable doubts in terms of safety and oncological permissibility. This study describes our experience and an evaluation of the systematic establishment of lobectomy by means of video-assisted thoracic surgery (VATS) as standard treatment of NSCLC in stage I, which serves as an alternative to conventional surgery. For this purpose, 42 NSCLC patients in stage I, undergoing a conventional lobectomy in 2010 (group I), were retrospectively compared to 30 patients in the same tumour stage (group II) who were treated in 2011 using VATS lobectomy. The comparison of these two groups was drawn regarding operation time, number of resected lymph nodes, required analgesics, duration of drainage, rate of postoperative complications and length of hospital stay. Although VATS lobectomy requires a longer operation time of approximately 30 minutes, it shows significant advantages in reference to postoperative need of analgesics, duration of drainage and complications after surgery. Furthermore, the amount of resected lymph nodes was comparable in both groups. Therefore, VATS lobectomy constitutes an essential extension for the operative management in a lung cancer centre. Our results show that this new method is not only of equal, but of superior value compared to conventional lobectomy. Our experience and recent data in the literature illustrate that VATS lobectomy will play a decisive role in therapy for NSCLC in stage I, potentially even in stages II and IIIA.
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Affiliation(s)
- M Grallert
- Klinik für Thoraxchirurgie, Martha-Maria Krankenhaus Halle-Dölau Deutschland
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Döring F, Robisch AL, Eberl C, Osterhoff M, Ruhlandt A, Liese T, Schlenkrich F, Hoffmann S, Bartels M, Salditt T, Krebs HU. Sub-5 nm hard x-ray point focusing by a combined Kirkpatrick-Baez mirror and multilayer zone plate. Opt Express 2013; 21:19311-19323. [PMID: 23938848 DOI: 10.1364/oe.21.019311] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Compound optics such as lens systems can overcome the limitations concerning resolution, efficiency, or aberrations which fabrication constraints would impose on any single optical element. In this work we demonstrate unprecedented sub-5 nm point focusing of hard x-rays, based on the combination of a high gain Kirkpatrick-Baez (KB) mirror system and a high resolution W/Si multilayer zone plate (MZP) for ultra-short focal length f. The pre-focusing allows limiting the MZP radius to below 2 μm, compatible with the required 5 nm structure width and essentially unlimited aspect ratios, provided by enabling fabrication technology based on pulsed laser deposition (PLD) and focused ion beam (FIB).
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Affiliation(s)
- F Döring
- Institut für Materialphysik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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Krenkel M, Bartels M, Salditt T. Transport of intensity phase reconstruction to solve the twin image problem in holographic x-ray imaging. Opt Express 2013; 21:2220-2235. [PMID: 23389203 DOI: 10.1364/oe.21.002220] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We have implemented a deterministic method for solving the phase problem in hard x-ray in-line holography which overcomes the twin image problem. The phase distribution in the detector plane is retrieved by using two images with slightly different Fresnel numbers. We then use measured intensities and reconstructed phases in the detection plane to compute the exit wave in the sample plane. No further a priori information like a limited support or the assumption of pure phase objects is necessary so that it can be used for a wide range of complex samples. Using a nano-focused hard x-ray beam half period resolutions better than 30 nm are achieved.
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Affiliation(s)
- M Krenkel
- Institut für Röntgenphysik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany.
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Geels LM, Vink JM, van Beek JHDA, Willemsen G, Bartels M, Boomsma DI. [Early alcohol initiation and increased adult alcohol consumption: cause or indicator?]. Tijdschr Psychiatr 2013; 55:585-597. [PMID: 23964004] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Early alcohol initiation is strongly associated with increased alcohol consumption and alcohol abuse/dependence in adulthood. The mechanisms that underlie this association are unclear. AIM To examine whether there is a causal link between early alcohol initiation and later alcohol consumption. METHOD Survey data were collected from twin pairs (age range 18-80) included in the Netherlands Twin Register (NTR). A discordant twin design was used to examine the origin of the link between early alcohol initiation and adult alcohol consumption. Within monozygotic pairs (82-143 pairs), twins who started drinking early were compared to their brother/sister who started drinking later, on frequency of alcohol use, weekly alcohol consumption, number of alcohol intoxications, excessive drinking, alcohol abuse/-dependence, and hazardous drinking. By drawing comparisons within monozygotic pairs, we were able to control for the effects of genes/shared environment. Additional analyses examined the effects of age, sex, and in-/exclusion of lifelong abstainers. RESULTS Within monozygotic twin pairs, the twin who had started drinking early did not differ significantly from his/her brother/sister with respect to future alcohol consumption. Results were independent of age, sex, and in-/exclusion of lifelong abstainers. CONCLUSION Early alcohol initiation did not have significant causal effects on subsequent alcohol consumption in adulthood and may be an indicator of a predisposition for alcohol consumption. Campaigns aimed at raising the minimum age for alcohol initiation will possibly have only a limited effect on adult alcohol consumption.
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Affiliation(s)
- L M Geels
- Vrije Universiteit, Amsterdam, The Netherlands.
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Thelen A, Benckert C, Tautenhahn HM, Hau HM, Bartels M, Linnemann J, Bertolini J, Moche M, Wittekind C, Jonas S. Liver resection for hepatocellular carcinoma in patients without cirrhosis. Br J Surg 2012; 100:130-7. [PMID: 23132620 DOI: 10.1002/bjs.8962] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2012] [Indexed: 12/12/2022]
Abstract
BACKGROUND Data on liver resection for hepatocellular carcinoma (HCC) without cirrhosis are sparse. The present study was conducted to evaluate the indications and results of liver resection for HCC with regard to safety and efficacy. METHODS Data for patients who had liver resection for HCC without cirrhosis between January 1996 and March 2011 were retrieved retrospectively using a prospective database containing information on all patients who underwent hepatectomy for HCC. Patient and tumour characteristics were analysed for influence on overall and disease-free survival to identify prognostic factors by univariable and multivariable analysis. RESULTS The 1-, 3- and 5-year overall survival rates after resection with curative intent for HCC without cirrhosis were 84, 66 and 50 per cent respectively. Disease-free survival rates were 69, 53 and 42 per cent respectively. The 90-day mortality rate was 4·5 per cent (5 of 110 patients). Surgical radicality and growth pattern of the tumour were independent prognostic factors for overall survival. Disease-free survival after resection with curative intent was independently affected by growth pattern and by the number and size of tumour nodules. CONCLUSION Liver resection for HCC without cirrhosis carries a low perioperative risk and excellent long-term outcome if radical resection is achieved.
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Affiliation(s)
- A Thelen
- Department of Visceral, Transplantation, Thoracic and Vascular Surgery, University of Leipzig, Leipzig, Germany.
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Bartels M, Rick D, Lowe E, Loizou G, Price P, Spendiff M, Arnold S, Cocker J, Ball N. Development of PK- and PBPK-based modeling tools for derivation of biomonitoring guidance values. Comput Methods Programs Biomed 2012; 108:773-788. [PMID: 22704290 DOI: 10.1016/j.cmpb.2012.04.014] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Received: 05/21/2011] [Revised: 04/14/2012] [Accepted: 04/27/2012] [Indexed: 06/01/2023]
Abstract
There are numerous programs ongoing to analyze environmental exposure of humans to xenobiotic chemicals via biomonitoring measurements (e.g.: EU ESBIO, COPHES; US CDC NHANES; Canadian Health Measures Survey). The goal of these projects is to determine relative trends in exposure to chemicals, across time and subpopulations. Due to the lack of data, there is often little information correlating biomarker concentrations with exposure levels and durations. As a result, it can be difficult to utilize biomonitoring data to evaluate if exposures adhere to or exceed hazard/exposure criteria such as the Derived No-Effect Level values under the EU REACH program, or Reference Dose/Concentration values of the US EPA. A tiered approach of simple, arithmetic pharmacokinetic (PK) models, as well as more standardized mean-value, physiologically-based (PBPK) models, have therefore been developed to estimate exposures from biomonitoring results. Both model types utilize a user-friendly Excel spreadsheet interface. QSPR estimations of chemical-specific parameters have been included, as well as accommodation of variations in urine production. Validation of each model's structure by simulations of published datasets and the impact of assumptions of major model parameters will be presented.
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Affiliation(s)
- M Bartels
- Toxicology and Environmental Research & Consulting, The Dow Chemical Company, Midland, MI, USA.
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Wilke RN, Priebe M, Bartels M, Giewekemeyer K, Diaz A, Karvinen P, Salditt T. Hard X-ray imaging of bacterial cells: nano-diffraction and ptychographic reconstruction. Opt Express 2012; 20:19232-19254. [PMID: 23038565 DOI: 10.1364/oe.20.019232] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Ptychographic coherent X-ray diffractive imaging (PCDI) has been combined with nano-focus X-ray diffraction to study the structure and density distribution of unstained and unsliced bacterial cells, using a hard X-ray beam of 6.2keV photon energy, focused to about 90nm by a Fresnel zone plate lens. While PCDI provides images of the bacteria with quantitative contrast in real space with a resolution well below the beam size at the sample, spatially resolved small angle X-ray scattering using the same Fresnel zone plate (cellular nano-diffraction) provides structural information at highest resolution in reciprocal space up to 2nm(-1). We show how the real and reciprocal space approach can be used synergistically on the same sample and with the same setup. In addition, we present 3D hard X-ray imaging of unstained bacterial cells by a combination of ptychography and tomography.
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Affiliation(s)
- R N Wilke
- Institut für Röntgenphysik, Georg-August-Universität, Göttingen, Germany.
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Olendrowitz C, Bartels M, Krenkel M, Beerlink A, Mokso R, Sprung M, Salditt T. Phase-contrast x-ray imaging and tomography of the nematode Caenorhabditis elegans. Phys Med Biol 2012; 57:5309-23. [PMID: 22853964 DOI: 10.1088/0031-9155/57/16/5309] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [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]
Abstract
We have analyzed the model organism Caenorhabditis elegans with the help of phase-contrast x-ray tomography. This work combines techniques from x-ray imaging studies of single biological cells by in-line holography with three-dimensional reconstruction and furthermore extends these studies to the multicellular level. To preserve the sub-cellular ultrastructure of the nematodes, we used the near-native sample preparation of high-pressure freezing as commonly used in the field of electron microscopy. For the presented samples, a standard, non-magnifying parallel-beam setting, as well as a magnifying, divergent-beam setting using nanofocusing optics is evaluated based on their tomographic reconstruction potential. In this paper, we address difficulties in sample preparation and issues of image processing. By experimental refinement and through optimized reconstruction procedures, we were able to perform x-ray imaging studies on a living specimen.
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Affiliation(s)
- C Olendrowitz
- Institut für Röntgenphysik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany.
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