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433 results on '"Rzehak, P"'

101. Supersymmetry Parameter Analysis: SPA Convention and Project

Author

Aguilar-Saavedra, J. A., Ali, A., Allanach, B. C., Arnowitt, R., Baer, H. A., Bagger, J. A., Balazs, C., Barger, V., Barnett, M., Bartl, A., Battaglia, M., Bechtle, P., Belanger, G., Belyaev, A., Berger, E. L., Blair, G., Boos, E., Carena, M., Choi, S. Y., Deppisch, F., De Roeck, A., Desch, K., Diaz, M. A., Djouadi, A., Dutta, B., Dutta, S., Eberl, H., Ellis, J., Erler, J., Fraas, H., Freitas, A., Fritzsche, T., Godbole, R. M., Gounaris, G. J., Guasch, J., Gunion, J., Haba, N., Haber, H. E., Hagiwara, K., Han, L., Han, T., He, H. -J., Heinemeyer, S., Hesselbach, S., Hidaka, K., Hinchliffe, I., Hirsch, M., Hohenwarter-Sodek, K., Hollik, W., Hou, W. S., Hurth, T., Jack, I., Jiang, Y., Jones, D. R. T., Kalinowski, J., Kamon, T., Kane, G., Kang, S. K., Kernreiter, T., Kilian, W., Kim, C. S., King, S. F., Kittel, O., Klasen, M., Kneur, J. -L., Kovarik, K., Kramer, M., Kraml, S., Lafaye, R., Langacker, P., Logan, H. E., Ma, W. -G., Majerotto, W., Martyn, H. -U., Matchev, K., Miller, D. J., Mondragon, M., Moortgat-Pick, G., Moretti, S., Mori, T., Moultaka, G., Muanza, S., Muhlleitner, M. M., Mukhopadhyaya, B., Nauenberg, U., Nojiri, M. M., Nomura, D., Nowak, H., Okada, N., Olive, K. A., Oller, W., Peskin, M., Plehn, T., Polesello, G., Porod, W., Quevedo, F., Rainwater, D., Reuter, J., Richardson, P., Rolbiecki, K., Roy, P., Ruckl, R., Rzehak, H., Schleper, P., Siyeon, K., Skands, P., Slavich, P., Stockinger, D., Sphicas, P., Spira, M., Tait, T., Tovey, D. R., Valle, J. W. F., Wagner, C. E. M., Weber, Ch., Weiglein, G., Wienemann, P., Xing, Z. -Z., Yamada, Y., Yang, J. M., Zerwas, D., Zerwas, P. M., Zhang, R. -Y., Zhang, X., and Zhu, S. -H.

Subjects
High Energy Physics - Phenomenology
Abstract

High-precision analyses of supersymmetry parameters aim at reconstructing the fundamental supersymmetric theory and its breaking mechanism. A well defined theoretical framework is needed when higher-order corrections are included. We propose such a scheme, Supersymmetry Parameter Analysis SPA, based on a consistent set of conventions and input parameters. A repository for computer programs is provided which connect parameters in different schemes and relate the Lagrangian parameters to physical observables at LHC and high energy e+e- linear collider experiments, i.e., masses, mixings, decay widths and production cross sections for supersymmetric particles. In addition, programs for calculating high-precision low energy observables, the density of cold dark matter (CDM) in the universe as well as the cross sections for CDM search experiments are included. The SPA scheme still requires extended efforts on both the theoretical and experimental side before data can be evaluated in the future at the level of the desired precision. We take here an initial step of testing the SPA scheme by applying the techniques involved to a specific supersymmetry reference point., Comment: 17pp; references corrected

Published
2005
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102. The MSSM Higgs Sector at O(alpha_b alpha_s) and Beyond

Author

Heinemeyer, S., Hollik, W., Rzehak, H., and Weiglein, G.

Subjects
High Energy Physics - Phenomenology
Abstract

We evaluate O(alpha_b alpha_s) corrections in the MSSM Higgs boson sector, including an analysis of the renormalization in the bottom/scalar bottom sector. For mu < 0 the genuine two-loop corrections to the mass of the lightest Higgs boson mass can amount up to 3 GeV. Different renormalization schemes are applied and numerically compared. Likewise the residual dependence on the renormalization scale is investigated. This allows to determine the remaining theoretical uncertainties from unknown higher-order corrections at O(alpha_b alpha_s^2) for different regions of the MSSM parameter space., Comment: 6 pages, 4 figures. Talk given by S. Heinemeyer at the 2005 International Linear Collider Workshop, Stanford Ca (LCWS05)

Published
2005

103. Higgs-mass predictions in the MSSM and beyond

Author

Slavich, P., Heinemeyer, S., Bagnaschi, E., Bahl, H., Goodsell, M., Haber, H. E., Hahn, T., Harlander, R., Hollik, W., Lee, G., Mühlleitner, M., Paßehr, S., Rzehak, H., Stöckinger, D., Voigt, A., Wagner, C. E. M., Weiglein, G., Allanach, B. C., Biekötter, T., Borowka, S., Braathen, J., Carena, M., Dao, T. N., Degrassi, G., Domingo, F., Drechsel, P., Ellwanger, U., Gabelmann, M., Gröber, R., Klappert, J., Kwasnitza, T., Meuser, D., Mihaila, L., Murphy, N., Nickel, K., Porod, W., Rojas, E. A. Reyes, Sobolev, I., and Staub, F.

Published
2021
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105. High-Precision Predictions for the MSSM Higgs Sector at O(alpha_b alpha_s)

Author

Heinemeyer, S., Hollik, W., Rzehak, H., and Weiglein, G.

Subjects
High Energy Physics - Phenomenology
Abstract

We evaluate O(alpha_b alpha_s) corrections in the Higgs boson sector of the CP-conserving MSSM, generalising the known result in the literature to arbitrary values of tan beta. A detailed analysis of the renormalisation in the bottom/scalar bottom sector is performed. Concerning the lightest MSSM Higgs boson mass, we find relatively small corrections for positive mu, while for mu < 0 the genuine two-loop O(alpha_b alpha_s) corrections can amount up to 3 GeV. Different renormalisation schemes are applied and numerically compared. It is demonstrated that some care has to be taken in choosing an appropriate renormalisation prescription in order to avoid artificially large corrections. The residual dependence on the renormalisation scale is investigated, and the remaining theoretical uncertainties from unknown higher-order corrections in this sector are discussed for different regions of the MSSM parameter space., Comment: 34 pages, 18 figures, most minor modifications, version to appear in Eur. Phys. Jour. C

Published
2004
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106. The sfermion mass spectrum of the MSSM at the one-loop level

Author

Hollik, W. and Rzehak, H.

Subjects
High Energy Physics - Phenomenology
Abstract

The sfermion-mass spectrum of the minimal supersymmetric standard model is investigated at the one-loop level. An on-shell scheme has been specified for renormalization of the basic breaking parameters of the sfermionic sector. Owing to SU(2)-invariance, the soft-breaking mass parameters of the left-chiral scalar fermions of each isospin doublet are identical. Thus, one of the sfermion-masses of each doublet can be expressed in terms of the other masses and receives a mass shift at the one-loop level with respect to the lowest-order value, which can be of $O(10$ GeV). Both strong and electroweak contributions have been calculated for scalar quarks and leptons., Comment: 13 pages, 3 figures, version to appear in Eur. Phys. J. C

Published
2003
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107. Dynamics of Strongly Deformed Polymers in Solution

Author

Rzehak, Roland and Zimmermann, Walter

Subjects
Condensed Matter - Soft Condensed Matter
Abstract

Bead spring models for polymers in solution are nonlinear if either the finite extensibility of the polymer, excluded volume effects or hydrodynamic interactions between polymer segments are taken into account. For such models we use a powerful method for the determination of the complete relaxation spectrum of fluctuations at {\it steady state}. In general, the spectrum and modes differ significantly from those of the linear Rouse model. For a tethered polymer in uniform flow the differences are mainly caused by an inhomogeneous distribution of tension along the chain and are most pronounced due to the finite chain extensibility. Beyond the dynamics of steady state fluctuations we also investigate the nonlinear response of the polymer to a {\em large sudden change} in the flow. This response exhibits several distinct regimes with characteristic decay laws and shows features which are beyond the scope of single mode theories such as the dumbbell model., Comment: 7 pages, 3 figures

Published
2002
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108. Effect of many-body interactions on the solid-liquid phase-behavior of charge-stabilized colloidal suspensions

Author

Dobnikar, J., Rzehak, R., and von Gruenberg, H. H.

Subjects
Condensed Matter - Soft Condensed Matter
Abstract

The solid-liquid phase-diagram of charge-stabilized colloidal suspensions is calculated using a technique that combines a continuous Poisson-Boltzmann description for the microscopic electrolyte ions with a molecular-dynamics simulation for the macroionic colloidal spheres. While correlations between the microions are neglected in this approach, many-body interactions between the colloids are fully included. The solid-liquid transition is determined at a high colloid volume fraction where many-body interactions are expected to be strong. With a view to the Derjaguin-Landau-Verwey-Overbeek theory predicting that colloids interact via Yukawa pair-potentials, we compare our results with the phase diagram of a simple Yukawa liquid. Good agreement is found at high salt conditions, while at low ionic strength considerable deviations are observed. By calculating effective colloid-colloid pair-interactions it is demonstrated that these differences are due to many-body interactions. We suggest a density-dependent pair-potential in the form of a truncated Yukawa potential, and show that it offers a considerably improved description of the solid-liquid phase-behavior of concentrated colloidal suspensions.

Published
2002
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110. Novel loci for childhood body mass index and shared heritability with adult cardiometabolic traits.

Author

Suzanne Vogelezang, Jonathan P Bradfield, Tarunveer S Ahluwalia, John A Curtin, Timo A Lakka, Niels Grarup, Markus Scholz, Peter J van der Most, Claire Monnereau, Evie Stergiakouli, Anni Heiskala, Momoko Horikoshi, Iryna O Fedko, Natalia Vilor-Tejedor, Diana L Cousminer, Marie Standl, Carol A Wang, Jorma Viikari, Frank Geller, Carmen Íñiguez, Niina Pitkänen, Alessandra Chesi, Jonas Bacelis, Loic Yengo, Maties Torrent, Ioanna Ntalla, Øyvind Helgeland, Saskia Selzam, Judith M Vonk, Mohammed H Zafarmand, Barbara Heude, Ismaa Sadaf Farooqi, Akram Alyass, Robin N Beaumont, Christian T Have, Peter Rzehak, Jose Ramon Bilbao, Theresia M Schnurr, Inês Barroso, Klaus Bønnelykke, Lawrence J Beilin, Lisbeth Carstensen, Marie-Aline Charles, Bo Chawes, Karine Clément, Ricardo Closa-Monasterolo, Adnan Custovic, Johan G Eriksson, Joaquin Escribano, Maria Groen-Blokhuis, Veit Grote, Dariusz Gruszfeld, Hakon Hakonarson, Torben Hansen, Andrew T Hattersley, Mette Hollensted, Jouke-Jan Hottenga, Elina Hyppönen, Stefan Johansson, Raimo Joro, Mika Kähönen, Ville Karhunen, Wieland Kiess, Bridget A Knight, Berthold Koletzko, Andreas Kühnapfel, Kathrin Landgraf, Jean-Paul Langhendries, Terho Lehtimäki, Jaakko T Leinonen, Aihuali Li, Virpi Lindi, Estelle Lowry, Mariona Bustamante, Carolina Medina-Gomez, Mads Melbye, Kim F Michaelsen, Camilla S Morgen, Trevor A Mori, Tenna R H Nielsen, Harri Niinikoski, Albertine J Oldehinkel, Katja Pahkala, Kalliope Panoutsopoulou, Oluf Pedersen, Craig E Pennell, Christine Power, Sijmen A Reijneveld, Fernando Rivadeneira, Angela Simpson, Peter D Sly, Jakob Stokholm, Kook K Teo, Elisabeth Thiering, Nicholas J Timpson, André G Uitterlinden, Catharina E M van Beijsterveldt, Barbera D C van Schaik, Marc Vaudel, Elvira Verduci, Rebecca K Vinding, Mandy Vogel, Eleftheria Zeggini, Sylvain Sebert, Mads V Lind, Christopher D Brown, Loreto Santa-Marina, Eva Reischl, Christine Frithioff-Bøjsøe, David Meyre, Eleanor Wheeler, Ken Ong, Ellen A Nohr, Tanja G M Vrijkotte, Gerard H Koppelman, Robert Plomin, Pål R Njølstad, George D Dedoussis, Philippe Froguel, Thorkild I A Sørensen, Bo Jacobsson, Rachel M Freathy, Babette S Zemel, Olli Raitakari, Martine Vrijheid, Bjarke Feenstra, Leo-Pekka Lyytikäinen, Harold Snieder, Holger Kirsten, Patrick G Holt, Joachim Heinrich, Elisabeth Widén, Jordi Sunyer, Dorret I Boomsma, Marjo-Riitta Järvelin, Antje Körner, George Davey Smith, Jens-Christian Holm, Mustafa Atalay, Clare Murray, Hans Bisgaard, Mark I McCarthy, Early Growth Genetics Consortium, Vincent W V Jaddoe, Struan F A Grant, and Janine F Felix

Subjects
Genetics, QH426-470
Abstract

The genetic background of childhood body mass index (BMI), and the extent to which the well-known associations of childhood BMI with adult diseases are explained by shared genetic factors, are largely unknown. We performed a genome-wide association study meta-analysis of BMI in 61,111 children aged between 2 and 10 years. Twenty-five independent loci reached genome-wide significance in the combined discovery and replication analyses. Two of these, located near NEDD4L and SLC45A3, have not previously been reported in relation to either childhood or adult BMI. Positive genetic correlations of childhood BMI with birth weight and adult BMI, waist-to-hip ratio, diastolic blood pressure and type 2 diabetes were detected (Rg ranging from 0.11 to 0.76, P-values

Published
2020
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111. Precision calculations for h → WW/ZZ → 4 fermions in the Two-Higgs-Doublet Model with Prophecy4f

Author

Lukas Altenkamp, Stefan Dittmaier, and Heidi Rzehak

Subjects
NLO Computations, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract We have calculated the next-to-leading-order electroweak and QCD corrections to the decay processes h → WW/ZZ → 4 fermions of the light CP-even Higgs boson h of various types of Two-Higgs-Doublet Models (Types I and II, “lepton-specific” and “flipped” models). The input parameters are defined in four different renormalization schemes, where parameters that are not directly accessible by experiments are defined in the M S ¯ $$ \overline{\mathrm{MS}} $$ scheme. Numerical results are presented for the corrections to partial decay widths for various benchmark scenarios previously motivated in the literature, where we investigate the dependence on the M S ¯ $$ \overline{\mathrm{MS}} $$ renormalization scale and on the choice of the renormalization scheme in detail. We find that it is crucial to be precise with these issues in parameter analyses, since parameter conversions between different schemes can involve sizeable or large corrections, especially in scenarios that are close to experimental exclusion limits or theoretical bounds. It even turns out that some renormalization schemes are not applicable in specific regions of parameter space. Our investigation of differential distributions shows that corrections beyond the Standard Model are mostly constant offsets induced by the mixing between the light and heavy CP-even Higgs bosons, so that differential analyses of h→4f decay observables do not help to identify Two-Higgs-Doublet Models. Moreover, the decay widths do not significantly depend on the specific type of those models. The calculations are implemented in the public Monte Carlo generator Prophecy4f and ready for application.

Published
2018
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112. Renormalization schemes for the Two-Higgs-Doublet Model and applications to h → WW/ZZ → 4 fermions

Author

Lukas Altenkamp, Stefan Dittmaier, and Heidi Rzehak

Subjects
Beyond Standard Model, Higgs Physics, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract We perform the renormalization of different types of Two-Higgs-Doublet Models for the calculation of observables at next-to-leading order. In detail, we suggest four different renormalization schemes based on on-shell renormalization conditions as far as possible and on M S ¯ $$ \overline{\mathrm{MS}} $$ prescriptions for the remaining field-mixing parameters where no distinguished on-shell condition exists and make contact to existing schemes in the literature. In particular, we treat the tadpole diagrams in different ways and discuss issues of gauge independence and perturbative stability in the considered schemes. The renormalization group equations for the M S ¯ $$ \overline{\mathrm{MS}} $$ parameters are solved in each scheme, so that a consistent renormalization scale variation can be performed. We have implemented all Feynman rules including counterterms and the renormalization conditions into a FeynArts model file, so that amplitudes and squared matrix elements can be generated automatically. As an application we compute the decay of the light, CP-even Higgs boson of the Two-Higgs-Doublet Model into four fermions at next-to-leading order. The comparison of different schemes and the investigation of the renormalization scale dependence allows us to test the perturbative consistency in each of the renormalization schemes, and to get a better estimate of the theoretical uncertainty that arises due to the truncation of the perturbation series.

Published
2017
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113. Higgs-boson masses and mixing matrices in the NMSSM: analysis of on-shell calculations

Author

P. Drechsel, R. Gröber, S. Heinemeyer, M. Mühlleitner, H. Rzehak, and G. Weiglein

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract We analyze the Higgs-boson masses and mixing matrices in the NMSSM based on an on-shell (OS) renormalization of the gauge-boson and Higgs-boson masses and the parameters of the top/scalar top sector. We compare the implementation of the OS calculations in the codes NMSSMCALC and NMSSM-FeynHiggs up to $${\mathcal {O}}(\alpha _t\alpha _s)$$ O ( α t α s ) . We identify the sources of discrepancies at the one- and at the two-loop level. Finally we compare the OS and $$\overline{\mathrm {DR}}$$ DR ¯ evaluation as implemented in NMSSMCALC. The results are important ingredients for an estimate of the theoretical precision of Higgs-boson mass calculations in the NMSSM.

Published
2017
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114. Analysis of DNA methylation at birth and in childhood reveals changes associated with season of birth and latitude

Author

Kadalayil, L., Alam, M., White, C.H., Ghantous, A., Walton, E., Gruzieva, O., Merid, S.K., Kumar, A., Roy, R., Solomon, O., Huen, K., Eskenazi, B., Rzehak, P., Grote, V., Langhendries, J.-P., Verduci, E., Ferre, N., Gruszfeld, D., Gao, L., Guan, W., Zeng, X., Schisterman, E.F., Dou, J., Bakulski, K.M., Feinberg, J.I., Soomro, M.H., Pesce, G., Baiz, N., Isaevska, E., Plusquin, M., Vafeiadi, M., Roumeliotaki, T., Langie, S.A.S., Standaert, A., Allard, C., Perron, P., Bouchard, L., van Meel, E.R., Felix, J.F., Jaddoe, V.W.V., Yousefi, P.D., Ramlau‑Hansen, C.H., Relton, C.L., Tobi, E.W., Starling, A.P., Yang, I.V., Llambrich, M., Santorelli, G., Lepeule, J., Salas, L.A., Bustamante, M., Ewart, S.L., Zhang, H., Karmaus, W., Röder, Stefan, Zenclussen, Ana Claudia, Jin, J., Nystad, W., Page, C.M., Magnus, M., Jima, D.D., Hoyo, C., Maguire, R.L., Kvist, T., Czamara, D., Räikkönen, K., Gong, T., Ullemar, V., Rifas‐Shiman, S.L., Oken, E., Almqvist, C., Karlsson, R., Lahti, J., Murphy, S.K., Håberg, S.E., London, S., Herberth, Gunda, Arshad, H., Sunyer, J., Grazuleviciene, R., Dabelea, D., Steegers‑Theunissen, R.P.M., Nohr, E.A., Sørensen, T.I.A., Duijts, L., Hivert, M.-F., Nelen, V., Popovic, M., Kogevinas, M., Nawrot, T.S., Herceg, Z., Annesi‑Maesano, I., Fallin, M.D., Yeung, E., Breton, C.V., Koletzko, B., Holland, N., Melén, E., Sharp, G.C., Silver, M.J., Kadalayil, L., Alam, M., White, C.H., Ghantous, A., Walton, E., Gruzieva, O., Merid, S.K., Kumar, A., Roy, R., Solomon, O., Huen, K., Eskenazi, B., Rzehak, P., Grote, V., Langhendries, J.-P., Verduci, E., Ferre, N., Gruszfeld, D., Gao, L., Guan, W., Zeng, X., Schisterman, E.F., Dou, J., Bakulski, K.M., Feinberg, J.I., Soomro, M.H., Pesce, G., Baiz, N., Isaevska, E., Plusquin, M., Vafeiadi, M., Roumeliotaki, T., Langie, S.A.S., Standaert, A., Allard, C., Perron, P., Bouchard, L., van Meel, E.R., Felix, J.F., Jaddoe, V.W.V., Yousefi, P.D., Ramlau‑Hansen, C.H., Relton, C.L., Tobi, E.W., Starling, A.P., Yang, I.V., Llambrich, M., Santorelli, G., Lepeule, J., Salas, L.A., Bustamante, M., Ewart, S.L., Zhang, H., Karmaus, W., Röder, Stefan, Zenclussen, Ana Claudia, Jin, J., Nystad, W., Page, C.M., Magnus, M., Jima, D.D., Hoyo, C., Maguire, R.L., Kvist, T., Czamara, D., Räikkönen, K., Gong, T., Ullemar, V., Rifas‐Shiman, S.L., Oken, E., Almqvist, C., Karlsson, R., Lahti, J., Murphy, S.K., Håberg, S.E., London, S., Herberth, Gunda, Arshad, H., Sunyer, J., Grazuleviciene, R., Dabelea, D., Steegers‑Theunissen, R.P.M., Nohr, E.A., Sørensen, T.I.A., Duijts, L., Hivert, M.-F., Nelen, V., Popovic, M., Kogevinas, M., Nawrot, T.S., Herceg, Z., Annesi‑Maesano, I., Fallin, M.D., Yeung, E., Breton, C.V., Koletzko, B., Holland, N., Melén, E., Sharp, G.C., and Silver, M.J.

Abstract

BackgroundSeasonal variations in environmental exposures at birth or during gestation are associated with numerous adult traits and health outcomes later in life. Whether DNA methylation (DNAm) plays a role in the molecular mechanisms underlying the associations between birth season and lifelong phenotypes remains unclear.MethodsWe carried out epigenome-wide meta-analyses within the Pregnancy And Childhood Epigenetic Consortium to identify associations of DNAm with birth season, both at differentially methylated probes (DMPs) and regions (DMRs). Associations were examined at two time points: at birth (21 cohorts, N = 9358) and in children aged 1–11 years (12 cohorts, N = 3610). We conducted meta-analyses to assess the impact of latitude on birth season-specific associations at both time points.ResultsWe identified associations between birth season and DNAm (False Discovery Rate-adjusted p values < 0.05) at two CpGs at birth (winter-born) and four in the childhood (summer-born) analyses when compared to children born in autumn. Furthermore, we identified twenty-six differentially methylated regions (DMR) at birth (winter-born: 8, spring-born: 15, summer-born: 3) and thirty-two in childhood (winter-born: 12, spring and summer: 10 each) meta-analyses with few overlapping DMRs between the birth seasons or the two time points. The DMRs were associated with genes of known functions in tumorigenesis, psychiatric/neurological disorders, inflammation, or immunity, amongst others. Latitude-stratified meta-analyses [higher (≥ 50°N), lower (< 50°N, northern hemisphere only)] revealed differences in associations between birth season and DNAm by birth latitude. DMR analysis implicated genes with previously reported links to schizophrenia (LAX1), skin disorders (PSORS1C, LTB4R), and airway inflammation including asthma (LTB4R), present only at birth in the higher latitudes (≥ 50°N).ConclusiosIn this large epigenome-wide meta-analysis study, we provide eviden

Published
2023

115. Analysis of DNA methylation at birth and in childhood reveals changes associated with season of birth and latitude

Author

Universitat Rovira i Virgili, Kadalayil, L; Alam, MZ; White, CH; Ghantous, A; Walton, E; Gruzieva, O; Merid, SK; Kumar, A; Roy, RP; Solomon, O; Huen, K; Eskenazi, B; Rzehak, P; Grote, V; Langhendries, JP; Verduci, E; Ferre, N; Gruszfeld, D; Gao, L; Guan, WH; Zeng, XH; Schisterman, EF; Dou, JF; Bakulski, KM; Feinberg, JI; Soomro, MH; Pesce, G; Baiz, N; Isaevska, E; Plusquin, M; Vafeiadi, M; Roumeliotaki, T; Langie, SAS; Standaert, A; Allard, C; Perron, P; Bouchard, L; van Meel, ER; Felix, JF; Jaddoe, VWV; Yousefi, PD; Ramlau-Hansen, CH; Relton, CL; Tobi, EW; Starling, AP; Yang, IV; Llambrich, M; Santorelli, G; Lepeule, J; Salas, LA; Bustamante, M; Ewart, SL; Zhang, HM; Karmaus, W; Röder, S; Zenclussen, AC; Jin, JP; Nystad, W; Page, CM; Magnus, M; Jima, DD; Hoyo, C; Maguire, RL; Kvist, T; Czamara, D; Räikkönen, K; Gong, T; Ullemar, V; Rifas-Shiman, SL; Oken, E; Almqvist, C; Karlsson, R; Lahti, J; Murphy, SK; Håberg, SE; London, S; Herberth, G; Arshad, H; Sunyer, J; Grazuleviciene, R; Dabelea, D; Steegers-Theunissen, RPM; Nohr, EA; Sorensen, TIA; Duijts, L; Hivert, MF; Nelen, V; Popovic, M; Kogevinas, M; Nawrot, TS; Herceg, Z; Annesi-Maesano, I; Fallin, MD; Yeung, EDA; Breton, CV; Koletzko, B; Holland, N; Wiemels, JL; Melén, E; Sharp, GC; Silver, MJ; Rezwan, F; Holloway, JW, Universitat Rovira i Virgili, and Kadalayil, L; Alam, MZ; White, CH; Ghantous, A; Walton, E; Gruzieva, O; Merid, SK; Kumar, A; Roy, RP; Solomon, O; Huen, K; Eskenazi, B; Rzehak, P; Grote, V; Langhendries, JP; Verduci, E; Ferre, N; Gruszfeld, D; Gao, L; Guan, WH; Zeng, XH; Schisterman, EF; Dou, JF; Bakulski, KM; Feinberg, JI; Soomro, MH; Pesce, G; Baiz, N; Isaevska, E; Plusquin, M; Vafeiadi, M; Roumeliotaki, T; Langie, SAS; Standaert, A; Allard, C; Perron, P; Bouchard, L; van Meel, ER; Felix, JF; Jaddoe, VWV; Yousefi, PD; Ramlau-Hansen, CH; Relton, CL; Tobi, EW; Starling, AP; Yang, IV; Llambrich, M; Santorelli, G; Lepeule, J; Salas, LA; Bustamante, M; Ewart, SL; Zhang, HM; Karmaus, W; Röder, S; Zenclussen, AC; Jin, JP; Nystad, W; Page, CM; Magnus, M; Jima, DD; Hoyo, C; Maguire, RL; Kvist, T; Czamara, D; Räikkönen, K; Gong, T; Ullemar, V; Rifas-Shiman, SL; Oken, E; Almqvist, C; Karlsson, R; Lahti, J; Murphy, SK; Håberg, SE; London, S; Herberth, G; Arshad, H; Sunyer, J; Grazuleviciene, R; Dabelea, D; Steegers-Theunissen, RPM; Nohr, EA; Sorensen, TIA; Duijts, L; Hivert, MF; Nelen, V; Popovic, M; Kogevinas, M; Nawrot, TS; Herceg, Z; Annesi-Maesano, I; Fallin, MD; Yeung, EDA; Breton, CV; Koletzko, B; Holland, N; Wiemels, JL; Melén, E; Sharp, GC; Silver, MJ; Rezwan, F; Holloway, JW

Abstract

Seasonal variations in environmental exposures at birth or during gestation are associated with numerous adult traits and health outcomes later in life. Whether DNA methylation (DNAm) plays a role in the molecular mechanisms underlying the associations between birth season and lifelong phenotypes remains unclear.We carried out epigenome-wide meta-analyses within the Pregnancy And Childhood Epigenetic Consortium to identify associations of DNAm with birth season, both at differentially methylated probes (DMPs) and regions (DMRs). Associations were examined at two time points: at birth (21 cohorts, N = 9358) and in children aged 1-11 years (12 cohorts, N = 3610). We conducted meta-analyses to assess the impact of latitude on birth season-specific associations at both time points.We identified associations between birth season and DNAm (False Discovery Rate-adjusted p values < 0.05) at two CpGs at birth (winter-born) and four in the childhood (summer-born) analyses when compared to children born in autumn. Furthermore, we identified twenty-six differentially methylated regions (DMR) at birth (winter-born: 8, spring-born: 15, summer-born: 3) and thirty-two in childhood (winter-born: 12, spring and summer: 10 each) meta-analyses with few overlapping DMRs between the birth seasons or the two time points. The DMRs were associated with genes of known functions in tumorigenesis, psychiatric/neurological disorders, inflammation, or immunity, amongst others. Latitude-stratified meta-analyses [higher (≥ 50°N), lower (< 50°N, northern hemisphere only)] revealed differences in associations between birth season and DNAm by birth latitude. DMR analysis implicated genes with previously reported links to schizophrenia (LAX1), skin disorders (PSORS1C, LTB4R), and airway inflammation inclu

Published
2023

117. Long-Chain Polyunsaturated Fatty Acids, Homocysteine at Birth and Fatty Acid Desaturase Gene Cluster Polymorphisms Are Associated with Children’s Processing Speed up to Age 9 Years

Author

Cristina Campoy, Hatim Azaryah, Francisco J. Torres-Espínola, Cristina Martínez-Zaldívar, José Antonio García-Santos, Hans Demmelmair, Gudrun Haile, Peter Rzehak, Berthold Koletzko, Eszter Györei, Tamas Décsi, María del Carmen Ramírez-Tortosa, Eva Reischl, Anne M. Molloy, Juan de Dios Luna, and Miguel Pérez-García

Subjects
long-chain polyunsaturated fatty acids, folate, prenatal supplementation, processing speed, neurodevelopment, FADS gene, Nutrition. Foods and food supply, TX341-641
Abstract

Both pre- and early postnatal supplementation with docosahexaenoic acid (DHA), arachidonic acid (AA) and folate have been related to neural development, but their long-term effects on later neural function remain unclear. We evaluated the long-term effects of maternal prenatal supplementation with fish-oil (FO), 5-methyltetrahydrofolate (5-MTHF), placebo or FO + 5-MTHF, as well as the role of fatty acid desaturase (FADS) gene cluster polymorphisms, on their offspring’s processing speed at later school age. This study was conducted in NUHEAL children at 7.5 (n = 143) and 9 years of age (n = 127). Processing speed tasks were assessed using Symbol Digit Modalities Test (SDMT), Children Color Trails Test (CCTT) and Stroop Color and Word Test (SCWT). Long-chain polyunsaturated fatty acids, folate and total homocysteine (tHcy) levels were determined at delivery from maternal and cord blood samples. FADS and methylenetetrahydrofolate reductase (MTHFR) 677 C > T genetic polymorphisms were analyzed. Mixed models (linear and logistic) were performed. There were significant differences in processing speed performance among children at different ages (p < 0.001). The type of prenatal supplementation had no effect on processing speed in children up to 9 years. Secondary exploratory analyses indicated that children born to mothers with higher AA/DHA ratio at delivery (p < 0.001) and heterozygotes for FADS1 rs174556 (p < 0.05) showed better performance in processing speed at 9 years. Negative associations between processing speed scores and maternal tHcy levels at delivery were found. Our findings suggest speed processing development in children up to 9 years could be related to maternal factors, including AA/DHA and tHcy levels, and their genetic background, mainly FADS polymorphism. These considerations support that maternal prenatal supplementation should be quantitatively adequate and individualized to obtain better brain development and mental performance in the offspring.

Published
2020
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122. Euler-Euler Model of Bubbly Flow Using Particle-Center-Averaging Method

Author

Lyu, Hongmei, Schlegel, Fabian, Rzehak, Roland, and Lucas, Dirk

Abstract

AbstractThe Euler-Euler model is widely used in bubbly flow simulations up to industrial dimensions. The standard Euler-Euler model is based on the phase-averaging method. After averaging, the bubble forces in the field equations are functions of the local void fraction. In simulations, when the bubble diameter is larger than the computational cell spacing, the forces can transport the gas belonging to the same bubble in different directions. By contrast, a closure model for the bubble force is typically developed based on the assumption that the force is a resultant force that acts on the bubble’s center of mass. This inconsistency can lead to a nonphysical gas concentration in the center of a channel or near the channel wall if the bubble diameter is larger than the cell spacing. The purpose of the present contribution is to develop an Euler-Euler model where the bubble force consistency is recovered for two-phase flow simulations where the diameter of the disperse phase can be larger than the cell spacing. Such an Euler-Euler model is developed by combining an existing particle-center-averaged Euler-Euler framework with a Gaussian convolution method. To validate this Euler-Euler approach, a comparison is made with experimental data for the bubbly flows in two different vertical pipes. The results show that the proposed Euler-Euler model recovers the bubble force consistency and alleviates the overprediction of the void fraction peak near the wall, while its simulation results in the axial gas and liquid velocity and the liquid turbulence kinetic energy are similar to the results of the standard Euler-Euler model.

Published
2023
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123. Meta-analysis of epigenome-wide association studies in newborns and children show widespread sex differences in blood DNA methylation.

Author

Solomon, O, Huen, K, Yousefi, P, Küpers, LK, González, JR, Suderman, M, Reese, SE, Page, CM, Gruzieva, O, Rzehak, P, Gao, L, Bakulski, KM, Novoloaca, A, Allard, C, Pappa, I, Llambrich, M, Vives, M, Jima, DD, Kvist, T, Baccarelli, A, White, C, Rezwan, FI, Sharp, GC, Tindula, G, Bergström, A, Grote, V, Dou, JF, Isaevska, E, Magnus, MC, Corpeleijn, E, Perron, P, Jaddoe, VWV, Nohr, EA, Maitre, L, Foraster, M, Hoyo, C, Håberg, SE, Lahti, J, DeMeo, DL, Zhang, H, Karmaus, W, Kull, I, Koletzko, B, Feinberg, JI, Gagliardi, L, Bouchard, L, Ramlau-Hansen, CH, Tiemeier, H, Santorelli, G, Maguire, RL, Czamara, D, Litonjua, AA, Langhendries, J-P, Plusquin, M, Lepeule, J, Binder, EB, Verduci, E, Dwyer, T, Carracedo, Á, Ferre, N, Eskenazi, B, Kogevinas, M, Nawrot, TS, Munthe-Kaas, MC, Herceg, Z, Relton, C, Melén, E, Gruszfeld, D, Breton, C, Fallin, MD, Ghantous, A, Nystad, W, Heude, B, Snieder, H, Hivert, M-F, Felix, JF, Sørensen, TIA, Bustamante, M, Murphy, SK, Raikkönen, K, Oken, E, Holloway, JW, Arshad, SH, London, SJ, Holland, N, Solomon, O, Huen, K, Yousefi, P, Küpers, LK, González, JR, Suderman, M, Reese, SE, Page, CM, Gruzieva, O, Rzehak, P, Gao, L, Bakulski, KM, Novoloaca, A, Allard, C, Pappa, I, Llambrich, M, Vives, M, Jima, DD, Kvist, T, Baccarelli, A, White, C, Rezwan, FI, Sharp, GC, Tindula, G, Bergström, A, Grote, V, Dou, JF, Isaevska, E, Magnus, MC, Corpeleijn, E, Perron, P, Jaddoe, VWV, Nohr, EA, Maitre, L, Foraster, M, Hoyo, C, Håberg, SE, Lahti, J, DeMeo, DL, Zhang, H, Karmaus, W, Kull, I, Koletzko, B, Feinberg, JI, Gagliardi, L, Bouchard, L, Ramlau-Hansen, CH, Tiemeier, H, Santorelli, G, Maguire, RL, Czamara, D, Litonjua, AA, Langhendries, J-P, Plusquin, M, Lepeule, J, Binder, EB, Verduci, E, Dwyer, T, Carracedo, Á, Ferre, N, Eskenazi, B, Kogevinas, M, Nawrot, TS, Munthe-Kaas, MC, Herceg, Z, Relton, C, Melén, E, Gruszfeld, D, Breton, C, Fallin, MD, Ghantous, A, Nystad, W, Heude, B, Snieder, H, Hivert, M-F, Felix, JF, Sørensen, TIA, Bustamante, M, Murphy, SK, Raikkönen, K, Oken, E, Holloway, JW, Arshad, SH, London, SJ, and Holland, N

Abstract

BACKGROUND: Among children, sex-specific differences in disease prevalence, age of onset, and susceptibility have been observed in health conditions including asthma, immune response, metabolic health, some pediatric and adult cancers, and psychiatric disorders. Epigenetic modifications such as DNA methylation may play a role in the sexual differences observed in diseases and other physiological traits. METHODS: We performed a meta-analysis of the association of sex and cord blood DNA methylation at over 450,000 CpG sites in 8438 newborns from 17 cohorts participating in the Pregnancy And Childhood Epigenetics (PACE) Consortium. We also examined associations of child sex with DNA methylation in older children ages 5.5-10 years from 8 cohorts (n = 4268). RESULTS: In newborn blood, sex was associated at Bonferroni level significance with differences in DNA methylation at 46,979 autosomal CpG sites (p < 1.3 × 10-7) after adjusting for white blood cell proportions and batch. Most of those sites had lower methylation levels in males than in females. Of the differentially methylated CpG sites identified in newborn blood, 68% (31,727) met look-up level significance (p < 1.1 × 10-6) in older children and had methylation differences in the same direction. CONCLUSIONS: This is a large-scale meta-analysis examining sex differences in DNA methylation in newborns and older children. Expanding upon previous studies, we replicated previous findings and identified additional autosomal sites with sex-specific differences in DNA methylation. Differentially methylated sites were enriched in genes involved in cancer, psychiatric disorders, and cardiovascular phenotypes.

Published
2022

124. Meta-analysis of epigenome-wide association studies in newborns and children show widespread sex differences in blood DNA methylation

Author

Universitat Rovira i Virgili, Solomon, O; Huen, K; Yousefi, P; Küpers, LK; González, JR; Suderman, M; Reese, SE; Page, CM; Gruzieva, O; Rzehak, P; Gao, L; Bakulski, KM; Novoloaca, A; Allard, C; Pappa, I; Llambrich, M; Vives, M; Jima, DD; Kvist, T; Baccarelli, A; White, C; Rezwan, FI; Sharp, GC; Tindula, G; Bergström, A; Grote, V; Dou, JF; Isaevska, E; Magnus, MC; Corpeleijn, E; Perron, P; Jaddoe, VWV; Nohr, EA; Maitre, L; Foraster, M; Hoyo, C; Håberg, SE; Lahti, J; DeMeo, DL; Zhang, HM; Karmaus, W; Kull, I; Koletzko, B; Feinberg, JI; Gagliardi, L; Bouchard, L; Ramlau-Hansen, CH; Tiemeier, H; Santorelli, G; Maguire, RL; Czamara, D; Litonjua, AA; Langhendries, JP; Plusquin, M; Lepeule, J; Binder, EB; Verduci, E; Dwyer, T; Carracedo, A; Ferre, N; Eskenazi, B; Kogevinas, M; Nawrot, TS; Munthe-Kaas, MC; Herceg, Z; Relton, C; Melén, E; Gruszfeld, D; Breton, C; Fallin, MD; Ghantous, A; Nystad, W; Heude, B; Snieder, H; Hivert, MF; Felix, JF; Sorensen, TIA; Bustamante, M; Murphy, SK; Raikkönen, K; Oken, E; Holloway, JW; Arshad, SH; London, SJ; Holland, N, Universitat Rovira i Virgili, and Solomon, O; Huen, K; Yousefi, P; Küpers, LK; González, JR; Suderman, M; Reese, SE; Page, CM; Gruzieva, O; Rzehak, P; Gao, L; Bakulski, KM; Novoloaca, A; Allard, C; Pappa, I; Llambrich, M; Vives, M; Jima, DD; Kvist, T; Baccarelli, A; White, C; Rezwan, FI; Sharp, GC; Tindula, G; Bergström, A; Grote, V; Dou, JF; Isaevska, E; Magnus, MC; Corpeleijn, E; Perron, P; Jaddoe, VWV; Nohr, EA; Maitre, L; Foraster, M; Hoyo, C; Håberg, SE; Lahti, J; DeMeo, DL; Zhang, HM; Karmaus, W; Kull, I; Koletzko, B; Feinberg, JI; Gagliardi, L; Bouchard, L; Ramlau-Hansen, CH; Tiemeier, H; Santorelli, G; Maguire, RL; Czamara, D; Litonjua, AA; Langhendries, JP; Plusquin, M; Lepeule, J; Binder, EB; Verduci, E; Dwyer, T; Carracedo, A; Ferre, N; Eskenazi, B; Kogevinas, M; Nawrot, TS; Munthe-Kaas, MC; Herceg, Z; Relton, C; Melén, E; Gruszfeld, D; Breton, C; Fallin, MD; Ghantous, A; Nystad, W; Heude, B; Snieder, H; Hivert, MF; Felix, JF; Sorensen, TIA; Bustamante, M; Murphy, SK; Raikkönen, K; Oken, E; Holloway, JW; Arshad, SH; London, SJ; Holland, N

Abstract

Background: Among children, sex-specific differences in disease prevalence, age of onset, and susceptibility have been observed in health conditions including asthma, immune response, metabolic health, some pediatric and adult cancers, and psychiatric disorders. Epigenetic modifications such as DNA methylation may play a role in the sexual differences observed in diseases and other physiological traits. Methods: We performed a meta-analysis of the association of sex and cord blood DNA methylation at over 450,000 CpG sites in 8438 newborns from 17 cohorts participating in the Pregnancy And Childhood Epigenetics (PACE) Consortium. We also examined associations of child sex with DNA methylation in older children ages 5.5–10 years from 8 cohorts (n = 4268). Results: In newborn blood, sex was associated at Bonferroni level significance with differences in DNA methylation at 46,979 autosomal CpG sites (p < 1.3 × 10−7) after adjusting for white blood cell proportions and batch. Most of those sites had lower methylation levels in males than in females. Of the differentially methylated CpG sites identified in newborn blood, 68% (31,727) met look-up level significance (p < 1.1 × 10−6) in older children and had methylation differences in the same direction. Conclusions: This is a large-scale meta-analysis examining sex differences in DNA methylation in newborns and older children. Expanding upon previous studies, we replicated previous findings and identified additional autosomal sites with sex-specific differences in DNA methylation. Differentially methylated sites were enriched in genes involved in cancer, psychiatric disorders, and cardiovascular phenotypes.

Published
2022

126. Maternal Smoking during Pregnancy and DNA-Methylation in Children at Age 5.5 Years: Epigenome-Wide-Analysis in the European Childhood Obesity Project (CHOP)-Study.

Author

Peter Rzehak, Richard Saffery, Eva Reischl, Marcela Covic, Simone Wahl, Veit Grote, Annick Xhonneux, Jean-Paul Langhendries, Natalia Ferre, Ricardo Closa-Monasterolo, Elvira Verduci, Enrica Riva, Piotr Socha, Dariusz Gruszfeld, Berthold Koletzko, and European Childhood Obesity Trial Study group

Subjects
Medicine, Science
Abstract

Mounting evidence links prenatal exposure to maternal tobacco smoking with disruption of DNA methylation (DNAm) profile in the blood of infants. However, data on the postnatal stability of such DNAm signatures in childhood, as assessed by Epigenome Wide Association Studies (EWAS), are scarce. Objectives of this study were to investigate DNAm signatures associated with in utero tobacco smoke exposure beyond the 12th week of gestation in whole blood of children at age 5.5 years, to replicate previous findings in young European and American children and to assess their biological role by exploring databases and enrichment analysis. DNA methylation was measured in blood of 366 children of the multicentre European Childhood Obesity Project Study using the Illumina Infinium HM450 Beadchip (HM450K). An EWAS was conducted using linear regression of methylation values at each CpG site against in utero smoke exposure, adjusted for study characteristics, biological and technical effects. Methylation levels at five HM450K probes in MYO1G (cg12803068, cg22132788, cg19089201), CNTNAP2 (cg25949550), and FRMD4A (cg11813497) showed differential methylation that reached epigenome-wide significance according to the false-discovery-rate (FDR) criteria (q-value

Published
2016
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127. Code-Copying in the Balochi Language of Sistan

Author

Lutz Rzehak

Subjects
Language and Literature
Abstract

This empirical study deals with language contact phenomena in Sistan. Code-copying is viewed as a strategy of linguistic behavior when a dominated language acquires new elements in lexicon, phonology, morphology, syntax, pragmatic organization, etc., which can be interpreted as copies of a dominating language. In this framework Persian is regarded as the model code which provides elements for being copied into Balochi as the basic code. It is argued here that code-copying affects most readily the lexicon, whereas more structured subsystems like morphology and syntax hardly admit to copying. Instead lexical copies serve as an intermediary for copying phonic and morphological-syntactical features of the model code. Copies of the Persian model code which become established linguistic features of Balochi are distinguished from ephemeral linguistic switches which are studied within the context of communication situation variables and other linguistic or extra-linguistic factors. The study is based upon audio recordings of colloquial Balochi speech made by the author in Sistan during the last six years.

Published
2011
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135. CFD for Subcooled Flow Boiling: Parametric Variations

Author

Roland Rzehak and Eckhard Krepper

Subjects
Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

We investigate the present capabilities of CFD for wall boiling. The computational model used combines the Euler/Euler two-phase flow description with heat flux partitioning. Very similar modeling was previously applied to boiling water under high pressure conditions relevant to nuclear power systems. Similar conditions in terms of the relevant nondimensional numbers have been realized in the DEBORA tests using dichlorodifluoromethane (R12) as the working fluid. This facilitated measurements of radial profiles for gas volume fraction, gas velocity, liquid temperature, and bubble size. Robust predictive capabilities of the modeling require that it is validated for a wide range of parameters. It is known that a careful calibration of correlations used in the wall boiling model is necessary to obtain agreement with the measured data. We here consider tests under a variety of conditions concerning liquid subcooling, flow rate, and heat flux. It is investigated to which extent a set of calibrated model parameters suffices to cover at least a certain parameter range.

Published
2013
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140. CFD Analysis of a Void Distribution Benchmark of the NUPEC PSBT Tests: Model Calibration and Influence of Turbulence Modelling

Author

E. Krepper and R. Rzehak

Subjects
Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

The paper presents CFD calculations of the void distribution tests of the PSBT benchmark using ANSYS CFX-12.1. First, relevant aspects of the implemented wall boiling model are reviewed highlighting the uncertainties in several model parameters. It is then shown that the measured cross-sectionally averaged values can be reproduced well with a single set of calibrated model parameters for different test cases. For the reproduction of patterns of void distribution cross-sections, attention has to be focussed on the modelling of turbulence in the narrow channel. Only a turbulence model with the capability to resolve turbulent secondary flows is able to reproduce at least qualitatively the observed void distribution patterns.

Published
2012
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141. Gestational weight gain and body mass index in children: results from three german cohort studies.

Author

Andreas Beyerlein, Ina Nehring, Peter Rzehak, Joachim Heinrich, Manfred J Müller, Sandra Plachta-Danielzik, Martin Wabitsch, Melanie Weck, Hermann Brenner, Dietrich Rothenbacher, and Rüdiger von Kries

Subjects
Medicine, Science
Abstract

INTRODUCTION: Previous studies suggested potential priming effects of gestational weight gain (GWG) on offspring's body composition in later life. However, consistency of these effects in normal weight, overweight and obese mothers is less clear. METHODS: We combined the individual data of three German cohorts and assessed associations of total and excessive GWG (as defined by criteria of the Institute of Medicine) with offspring's mean body mass index (BMI) standard deviation scores (SDS) and overweight at the age of 5-6 years (total: n = 6,254). Quantile regression was used to examine potentially different effects on different parts of the BMI SDS distribution. All models were adjusted for birth weight, maternal age and maternal smoking during pregnancy and stratified by maternal pre-pregnancy weight status. RESULTS: In adjusted models, positive associations of total and excessive GWG with mean BMI SDS and overweight were observed only in children of non- overweight mothers. For example, excessive GWG was associated with a mean increase of 0.08 (95% CI: 0.01, 0.15) units of BMI SDS (0.13 (0.02, 0.24) kg/m(2) of 'real' BMI) in children of normal-weight mothers. The effects of total and excessive GWG on BMI SDS increased for higher- BMI children of normal-weight mothers. DISCUSSION: Increased GWG is likely to be associated with overweight in offspring of non-overweight mothers.

Published
2012
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142. Supersymmetry parameter analysis: SPA convention and project

Author

Aguilar-Saavedra, J. A., Ali, A., Allanach, B. C., Arnowitt, R., Baer, H. A., Bagger, J. A., Balazs, C., Barger, V., Barnett, M., Bartl, A., Battaglia, M., Bechtle, P., Bélanger, G., Belyaev, A., Berger, E. L., Blair, G., Boos, E., Carena, M., Choi, S. Y., Deppisch, F., Roeck, A. De, Desch, K., Diaz, M. A., Djouadi, A., Dutta, B., Dutta, S., Eberl, H., Ellis, J., Erler, J., Fraas, H., Freitas, A., Fritzsche, T., Godbole, R. M., Gounaris, G. J., Guasch, J., Gunion, J., Haba, N., Haber, H. E., Hagiwara, K., Han, L., Han, T., He, H.-J., Heinemeyer, S., Hesselbach, S., Hidaka, K., Hinchliffe, I., Hirsch, M., Hohenwarter-Sodek, K., Hollik, W., Hou, W. S., Hurth, T., Jack, I., Jiang, Y., Jones, D. R. T., Kalinowski, J., Kamon, T., Kane, G., Kang, S. K., Kernreiter, T., Kilian, W., Kim, C. S., King, S. F., Kittel, O., Klasen, M., Kneur, J.-L., Kovarik, K., Krämer, M., Kraml, S., Lafaye, R., Langacker, P., Logan, H. E., Ma, W.-G., Majerotto, W., Martyn, H.-U., Matchev, K., Miller, D. J., Mondragon, M., Moortgat-Pick, G., Moretti, S., Mori, T., Moultaka, G., Muanza, S., Mühlleitner, M. M., Mukhopadhyaya, B., Nauenberg, U., Nojiri, M. M., Nomura, D., Nowak, H., Okada, N., Olive, K. A., Öller, W., Peskin, M., Plehn, T., Polesello, G., Porod, W., Quevedo, F., Rainwater, D., Reuter, J., Richardson, P., Rolbiecki, K., Roy, P., Rückl, R., Rzehak, H., Schleper, P., Siyeon, K., Skands, P., Slavich, P., Stöckinger, D., Sphicas, P., Spira, M., Tait, T., Tovey, D. R., Valle, J. W. F., Wagner, C. E. M., Weber, Ch, Weiglein, G., Wienemann, P., Xing, Z.-Z., Yamada, Y., Yang, J. M., Zerwas, D., Zerwas, P. M., Zhang, R.-Y., Zhang, X., and Zhu, S.-H.

Published
2006
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143. Can environment or allergy explain international variation in prevalence of wheeze in childhood?

Author

Weinmayr, G., Jaensch, A., Ruelius, A. -K., Forastiere, F., Strachan, D. P., Weiland, S. K., Buchele, G., Dentler, C., Rzehak, P., Priftanji, A., Shkurti, A., Simenati, J., Grabocka, E., Shyti, K., Agolli, S., Gurakuqi, A., Stein, R. T., de Pereira, M. U., Jones, M. H., Pitrez, P. M., Cooper, P. J., Chico, M., Chen, Y. Z., Zhong, N. S., Lai, C. K. W., Wong, G. W. K., Riikjarv, M. -A., Annus, T., Annesi-Maesano, I., Gotua, M., Rukhadze, M., Abramidze, T., Kvachadze, I., Karsanidze, L., Kiladze, M., Dolidze, N., Leupold, W., Keil, U., von Mutius, E., Arthur, P., Addo-Yobo, E., Gratziou, C., Priftis, K., Papadopoulou, A., Katsardis, C., Tsanakas, J., Hatziagorou, E., Kirvassilis, F., Clausen, M., Shah, J. R., Mathur, R. S., Khubchandani, R. P., Mantri, S., Di Domenicantonio, R., De Sario, M., Sammarro, S., Pistelli, Riccardo, Serra, M. G., Corbo, Giuseppe Maria, Perucci, C. A., Svabe, V., Sebre, D., Casno, G., Novikova, I., Bagrade, L., Brunekreef, B., Schram, D., Doekes, G., Jansen-van Vliet, P. H. N., Janssen, N. A. H., Aarts, F. J. H., de Meer, G., Crane, J., Wickens, K., Barry, D., Nystad, W., Bolle, R., Lund, E., Batlles Garrido, J., Rubi Ruiz, T., Bonillo Perales, A., Gonzalez Jimenez, Y., Aguirre Rodriguez, J., Momblan deCabo, J., Losilla Maldonado, A., Daza Torres, M., Garcia-Marcos, L., Martinez Torres, A., Guillen Perez, J. J., Pinana Lopez, A., Castejon Robles, S., Garcia Hernandez, G., Martinez Gimeno, A., Moro Rodriguez, A. L., Luna Paredes, C., Gonzalez Gil, I., Morales Suarez-Varela, M. M., Llopis Gonzalez, A., Escribano Montaner, A., Tallon Guerola, M., Braback, L., Kjellman, M., Nilsson, L., Mai, X. -M., Sandin, A., Saraclar, Y., Kuyucu, S., Tuncer, A., Sackesen, C., Sumbuloglu, V., Geyik, P., Kocabas, C., Kaur, B., El-Sharif, N., Nemery, B., Barghuthy, F., Abu Huij, S., Qlebo, M., van Hage, M., Ait-Khaled, N., Anderson, H. R., Flohr, C., Williams, John Harford, Asher, I., Ellwood, P., Stewart, A., Mitchell, E., Pearce, N., Beasley, R., Bjorksten, B., Foliaki, S., Mallol, J., Montefort, S., Odhiambo, J., and Robertson, C.

Subjects
International variation, medicine.medical_specialty, Allergy, Epidemiology, Settore MED/10 - MALATTIE DELL'APPARATO RESPIRATORIO, Environment, 030204 cardiovascular system & hematology, Global Health, medicine.disease_cause, Atopy, 03 medical and health sciences, 0302 clinical medicine, Risk Factors, Surveys and Questionnaires, Wheeze, Hypersensitivity, Prevalence, Humans, Medicine, Environmental risk factors, 030212 general & internal medicine, Risk factor, Child, Asthma, business.industry, Public health, Aeroallergen, medicine.disease, medicine.symptom, business, Demography
Abstract

Asthma prevalence in children varies substantially around the world, but the contribution of known risk factors to this international variation is uncertain. The International Study of Asthma and Allergies in Childhood (ISAAC) Phase Two studied 8-12 year old children in 30 centres worldwide with parent-completed symptom and risk factor questionnaires and aeroallergen skin prick testing. We used multilevel logistic regression modelling to investigate the effect of adjustment for individual and ecological risk factors on the between-centre variation in prevalence of recent wheeze. Adjustment for single individual-level risk factors changed the centre-level variation from a reduction of up to 8.4% (and 8.5% for atopy) to an increase of up to 6.8%. Modelling the 11 most influential environmental factors among all children simultaneously, the centre-level variation changed little overall (2.4% increase). Modelling only factors that decreased the variance, the 6 most influential factors (synthetic and feather quilt, mother's smoking, heating stoves, dampness and foam pillows) in combination resulted in a 21% reduction in variance. Ecological (centre-level) risk factors generally explained higher proportions of the variation than did individual risk factors. Single environmental factors and aeroallergen sensitisation measured at the individual (child) level did not explain much of the between-centre variation in wheeze prevalence.

Published
2018

144. DNA methylation and body mass index from birth to adolescence: meta-analyses of epigenome-wide association studies

Author

Vehmeijer, F.O.L. (Florianne O.L.), Küpers, A.M. (Marlijn), Sharp, G.C. (Gemma C.), Salas, L.A. (Lucas A.), Lent, S. (Samantha), Jima, D.D. (Dereje D.), Tindula, G. (Gwen), Reese, S.E. (Sarah E.), Qi, C. (Cancan), Gruzieva, O. (Olena), Page, C. (Christian), Rezwan, F.I. (Faisal I.), Melton, P.E. (Philip E.), Nohr, C. (Christian), Escaramís, G. (Geòrgia), Rzehak, P. (Peter), Heiskala, A. (Anni), Gong, T. (Tong), Tuominen, S.T. (Samuli T.), Gao, L. (Lu), Ross, J.P. (Jason P.), Starling, A.P. (Anne P.), Holloway, J.W. (John W.), Yousefi, P. (Paul), Aasvang, G.M. (Gunn Marit), Beilin, L.J. (Lawrence), Bergström, A. (Anna), Binder, E.B. (Elisabeth), Chatzi, L. (Leda), Corpeleijn, E. (Eva), Czamara, D. (Darina), Eskenazi, B. (B.), Ewart, S. (Susan), Ferre, N. (Natalia), Grote, V. (Veit), Gruszfeld, D. (Dariusz), Håberg, S.E. (Siri E), Hoyo, C. (Cathrine), Huen, K. (Karen), Karlsson, R. (Robert), Kull, C.A. (Christian), Langhendries, J.P. (Jean Paul), Lepeule, J. (Johanna), Magnus, M.C. (Maria C.), Maguire, R.L. (Rachel L.), Molloy, P.L. (Peter L.), Poppelaars-Monnereau, C. (Claire), Mori, T.A. (Trevor A.), Oken, E. (Emily), Räikkönen, K. (Katri), Rifas-Shiman, S.L. (Sheryl), Ruiz-Arenas, C. (Carlos), Sebert, S. (Sylvain), Ullemar, V. (Vilhelmina), Verduci, E. (Elvira), Vonk, J.M. (Judith), Xu, C.-J. (Cheng-Jian), Yang, I.V. (Ivana V.), Zhang, H. (Hongmei), Zhang, W. (Weiming), Karmaus, W. (Wilfried), Dabelea, D. (Dana), Muhlhausler, B.S. (Beverly S.), Breton, C. (Carrie), Lahti, J. (Jari), Almqvist, C. (Catarina), Jarvelin, M.-R. (Marjo-Riitta), Koletzko, B. (Berthold), Vrijheid, M. (Martine), Sørensen, T.I.A. (Thorkild), Huang, R.-C. (Rae-Chi), Arshad, S.H. (Syed), Nystad, W. (Wenche), Melén, E. (Erik), Koppelman, G.H. (Gerard), London, S.J. (Stephanie J.), Holland, N. (Nina), Bustamante, M. (Mariona), Murphy, S.K. (Susan K.), Hivert, M.-F. (Marie-France), Baccarelli, A.A. (Andrea), Relton, C.L. (Caroline), Snieder, H. (Harold), Jaddoe, V.W.V. (Vincent), Felix, J.F. (Janine), Vehmeijer, F.O.L. (Florianne O.L.), Küpers, A.M. (Marlijn), Sharp, G.C. (Gemma C.), Salas, L.A. (Lucas A.), Lent, S. (Samantha), Jima, D.D. (Dereje D.), Tindula, G. (Gwen), Reese, S.E. (Sarah E.), Qi, C. (Cancan), Gruzieva, O. (Olena), Page, C. (Christian), Rezwan, F.I. (Faisal I.), Melton, P.E. (Philip E.), Nohr, C. (Christian), Escaramís, G. (Geòrgia), Rzehak, P. (Peter), Heiskala, A. (Anni), Gong, T. (Tong), Tuominen, S.T. (Samuli T.), Gao, L. (Lu), Ross, J.P. (Jason P.), Starling, A.P. (Anne P.), Holloway, J.W. (John W.), Yousefi, P. (Paul), Aasvang, G.M. (Gunn Marit), Beilin, L.J. (Lawrence), Bergström, A. (Anna), Binder, E.B. (Elisabeth), Chatzi, L. (Leda), Corpeleijn, E. (Eva), Czamara, D. (Darina), Eskenazi, B. (B.), Ewart, S. (Susan), Ferre, N. (Natalia), Grote, V. (Veit), Gruszfeld, D. (Dariusz), Håberg, S.E. (Siri E), Hoyo, C. (Cathrine), Huen, K. (Karen), Karlsson, R. (Robert), Kull, C.A. (Christian), Langhendries, J.P. (Jean Paul), Lepeule, J. (Johanna), Magnus, M.C. (Maria C.), Maguire, R.L. (Rachel L.), Molloy, P.L. (Peter L.), Poppelaars-Monnereau, C. (Claire), Mori, T.A. (Trevor A.), Oken, E. (Emily), Räikkönen, K. (Katri), Rifas-Shiman, S.L. (Sheryl), Ruiz-Arenas, C. (Carlos), Sebert, S. (Sylvain), Ullemar, V. (Vilhelmina), Verduci, E. (Elvira), Vonk, J.M. (Judith), Xu, C.-J. (Cheng-Jian), Yang, I.V. (Ivana V.), Zhang, H. (Hongmei), Zhang, W. (Weiming), Karmaus, W. (Wilfried), Dabelea, D. (Dana), Muhlhausler, B.S. (Beverly S.), Breton, C. (Carrie), Lahti, J. (Jari), Almqvist, C. (Catarina), Jarvelin, M.-R. (Marjo-Riitta), Koletzko, B. (Berthold), Vrijheid, M. (Martine), Sørensen, T.I.A. (Thorkild), Huang, R.-C. (Rae-Chi), Arshad, S.H. (Syed), Nystad, W. (Wenche), Melén, E. (Erik), Koppelman, G.H. (Gerard), London, S.J. (Stephanie J.), Holland, N. (Nina), Bustamante, M. (Mariona), Murphy, S.K. (Susan K.), Hivert, M.-F. (Marie-France), Baccarelli, A.A. (Andrea), Relton, C.L. (Caroline), Snieder, H. (Harold), Jaddoe, V.W.V. (Vincent), and Felix, J.F. (Janine)

Abstract

Background: DNA methylation has been shown to be associated with adiposity in adulthood. However, whether similar DNA methylation patterns are associated with childhood and adolescent body mass index (BMI) is largely unknown. More insight into this relationship at younger ages may have implications for future prevention of obesity and its related traits. Methods: We examined whether DNA methylation in cord blood and whole blood in childhood and adolescence was associated with BMI in the age range from 2 to 18 years using both cross-sectional and longitudinal models. We performed meta-analyses of epigenome-wide association studies including up to 4133 children from 23 studies. We examined the overlap of findings reported in previous studies in children and adults with those in our analyses and calculated enrichment. Results: DNA methylation at three CpGs (cg05937453, cg25212453, and cg10040131), each in a different age range, was associated with BMI at Bonferroni significance, P < 1.06 × 10−7, with a 0.96 standard deviation score (SDS) (standard error (SE) 0.17), 0.32 SDS (SE 0.06), and 0.32 BMI SDS (SE 0.06) higher BMI per 10% increase in methylation, respectively. DNA methylation at nine additional CpGs in the cross-sectional childhood model was associated with BMI at false discovery rate significance. The strength of the associations of DNA methylation at the 187 CpGs previously identified to be associated with adult BMI, increased with advancing age across childhood and adolescence in our analyses. In addition, correlation coefficients between effect estimates for those CpGs in adults and in children and adolescents also increased. Among the top findings for each age range, we observed increasing enrichment for the CpGs that were previously identified in adults (birth Penrichment = 1; childhood Penrichment = 2.00 × 10−4; adolescence Penrichment = 2.10 × 10−7). Conclusions: There were only minimal associations of DNA methylation with childhood and adolescent BMI.

Published
2020
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145. Novel loci for childhood body mass index and shared heritability with adult cardiometabolic traits.

Author

Vogelezang, S, Bradfield, JP, Ahluwalia, TS, Curtin, JA, Lakka, TA, Grarup, N, Scholz, M, van der Most, PJ, Monnereau, C, Stergiakouli, E, Heiskala, A, Horikoshi, M, Fedko, IO, Vilor-Tejedor, N, Cousminer, DL, Standl, M, Wang, CA, Viikari, J, Geller, F, Íñiguez, C, Pitkänen, N, Chesi, A, Bacelis, J, Yengo, L, Torrent, M, Ntalla, I, Helgeland, Ø, Selzam, S, Vonk, JM, Zafarmand, MH, Heude, B, Farooqi, IS, Alyass, A, Beaumont, RN, Have, CT, Rzehak, P, Bilbao, JR, Schnurr, TM, Barroso, I, Bønnelykke, K, Beilin, LJ, Carstensen, L, Charles, M-A, Chawes, B, Clément, K, Closa-Monasterolo, R, Custovic, A, Eriksson, JG, Escribano, J, Groen-Blokhuis, M, Grote, V, Gruszfeld, D, Hakonarson, H, Hansen, T, Hattersley, AT, Hollensted, M, Hottenga, J-J, Hyppönen, E, Johansson, S, Joro, R, Kähönen, M, Karhunen, V, Kiess, W, Knight, BA, Koletzko, B, Kühnapfel, A, Landgraf, K, Langhendries, J-P, Lehtimäki, T, Leinonen, JT, Li, A, Lindi, V, Lowry, E, Bustamante, M, Medina-Gomez, C, Melbye, M, Michaelsen, KF, Morgen, CS, Mori, TA, Nielsen, TRH, Niinikoski, H, Oldehinkel, AJ, Pahkala, K, Panoutsopoulou, K, Pedersen, O, Pennell, CE, Power, C, Reijneveld, SA, Rivadeneira, F, Simpson, A, Sly, Peter, Stokholm, J, Teo, KK, Thiering, E, Timpson, NJ, Uitterlinden, AG, van Beijsterveldt, CEM, van Schaik, BDC, Vaudel, M, Verduci, E, Vinding, RK, Vogel, M, Zeggini, E, Sebert, S, Lind, MV, Brown, CD, Santa-Marina, L, Reischl, E, Frithioff-Bøjsøe, C, Meyre, D, Wheeler, E, Ong, K, Nohr, EA, Vrijkotte, TGM, Koppelman, GH, Plomin, R, Njølstad, PR, Dedoussis, GD, Froguel, P, Sørensen, TIA, Jacobsson, B, Freathy, RM, Zemel, BS, Raitakari, O, Vrijheid, M, Feenstra, B, Lyytikäinen, L-P, Snieder, H, Kirsten, H, Holt, PG, Heinrich, J, Widén, E, Sunyer, J, Boomsma, DI, Järvelin, M-R, Körner, A, Davey Smith, G, Holm, J-C, Atalay, M, Murray, C, Bisgaard, H, McCarthy, MI, Early Growth Genetics Consortium, Jaddoe, VWV, Grant, SFA, Felix, JF, Vogelezang, S, Bradfield, JP, Ahluwalia, TS, Curtin, JA, Lakka, TA, Grarup, N, Scholz, M, van der Most, PJ, Monnereau, C, Stergiakouli, E, Heiskala, A, Horikoshi, M, Fedko, IO, Vilor-Tejedor, N, Cousminer, DL, Standl, M, Wang, CA, Viikari, J, Geller, F, Íñiguez, C, Pitkänen, N, Chesi, A, Bacelis, J, Yengo, L, Torrent, M, Ntalla, I, Helgeland, Ø, Selzam, S, Vonk, JM, Zafarmand, MH, Heude, B, Farooqi, IS, Alyass, A, Beaumont, RN, Have, CT, Rzehak, P, Bilbao, JR, Schnurr, TM, Barroso, I, Bønnelykke, K, Beilin, LJ, Carstensen, L, Charles, M-A, Chawes, B, Clément, K, Closa-Monasterolo, R, Custovic, A, Eriksson, JG, Escribano, J, Groen-Blokhuis, M, Grote, V, Gruszfeld, D, Hakonarson, H, Hansen, T, Hattersley, AT, Hollensted, M, Hottenga, J-J, Hyppönen, E, Johansson, S, Joro, R, Kähönen, M, Karhunen, V, Kiess, W, Knight, BA, Koletzko, B, Kühnapfel, A, Landgraf, K, Langhendries, J-P, Lehtimäki, T, Leinonen, JT, Li, A, Lindi, V, Lowry, E, Bustamante, M, Medina-Gomez, C, Melbye, M, Michaelsen, KF, Morgen, CS, Mori, TA, Nielsen, TRH, Niinikoski, H, Oldehinkel, AJ, Pahkala, K, Panoutsopoulou, K, Pedersen, O, Pennell, CE, Power, C, Reijneveld, SA, Rivadeneira, F, Simpson, A, Sly, Peter, Stokholm, J, Teo, KK, Thiering, E, Timpson, NJ, Uitterlinden, AG, van Beijsterveldt, CEM, van Schaik, BDC, Vaudel, M, Verduci, E, Vinding, RK, Vogel, M, Zeggini, E, Sebert, S, Lind, MV, Brown, CD, Santa-Marina, L, Reischl, E, Frithioff-Bøjsøe, C, Meyre, D, Wheeler, E, Ong, K, Nohr, EA, Vrijkotte, TGM, Koppelman, GH, Plomin, R, Njølstad, PR, Dedoussis, GD, Froguel, P, Sørensen, TIA, Jacobsson, B, Freathy, RM, Zemel, BS, Raitakari, O, Vrijheid, M, Feenstra, B, Lyytikäinen, L-P, Snieder, H, Kirsten, H, Holt, PG, Heinrich, J, Widén, E, Sunyer, J, Boomsma, DI, Järvelin, M-R, Körner, A, Davey Smith, G, Holm, J-C, Atalay, M, Murray, C, Bisgaard, H, McCarthy, MI, Early Growth Genetics Consortium, Jaddoe, VWV, Grant, SFA, and Felix, JF

Abstract

The genetic background of childhood body mass index (BMI), and the extent to which the well-known associations of childhood BMI with adult diseases are explained by shared genetic factors, are largely unknown. We performed a genome-wide association study meta-analysis of BMI in 61,111 children aged between 2 and 10 years. Twenty-five independent loci reached genome-wide significance in the combined discovery and replication analyses. Two of these, located near NEDD4L and SLC45A3, have not previously been reported in relation to either childhood or adult BMI. Positive genetic correlations of childhood BMI with birth weight and adult BMI, waist-to-hip ratio, diastolic blood pressure and type 2 diabetes were detected (Rg ranging from 0.11 to 0.76, P-values <0.002). A negative genetic correlation of childhood BMI with age at menarche was observed. Our results suggest that the biological processes underlying childhood BMI largely, but not completely, overlap with those underlying adult BMI. The well-known observational associations of BMI in childhood with cardio-metabolic diseases in adulthood may reflect partial genetic overlap, but in light of previous evidence, it is also likely that they are explained through phenotypic continuity of BMI from childhood into adulthood.

Published
2020

146. DNA methylation and body mass index from birth to adolescence:meta-analyses of epigenome-wide association studies

Author

Vehmeijer, F. O. (Florianne O. L.), Kuepers, L. K. (Leanne K.), Sharp, G. C. (Gemma C.), Salas, L. A. (Lucas A.), Lent, S. (Samantha), Jima, D. D. (Dereje D.), Tindula, G. (Gwen), Reese, S. (Sarah), Qi, C. (Cancan), Gruzieva, O. (Olena), Page, C. (Christian), Rezwan, F. I. (Faisal, I), Melton, P. E. (Philip E.), Nohr, E. (Ellen), Escaramis, G. (Georgia), Rzehak, P. (Peter), Heiskala, A. (Anni), Gong, T. (Tong), Tuominen, S. T. (Samuli T.), Gao, L. (Lu), Ross, J. P. (Jason P.), Starling, A. P. (Anne P.), Holloway, J. W. (John W.), Yousefi, P. (Paul), Aasvang, G. M. (Gunn Marit), Beilin, L. J. (Lawrence J.), Bergstrom, A. (Anna), Binder, E. (Elisabeth), Chatzi, L. (Leda), Corpeleijn, E. (Eva), Czamara, D. (Darina), Eskenazi, B. (Brenda), Ewart, S. (Susan), Ferre, N. (Natalia), Grote, V. (Veit), Gruszfeld, D. (Dariusz), Haberg, S. E. (Siri E.), Hoyo, C. (Cathrine), Huen, K. (Karen), Karlsson, R. (Robert), Kull, I. (Inger), Langhendries, J.-P. (Jean-Paul), Lepeule, J. (Johanna), Magnus, M. C. (Maria C.), Maguire, R. L. (Rachel L.), Molloy, P. L. (Peter L.), Monnereau, C. (Claire), Mori, T. A. (Trevor A.), Oken, E. (Emily), Raikkonen, K. (Katri), Rifas-Shiman, S. (Sheryl), Ruiz-Arenas, C. (Carlos), Sebert, S. (Sylvain), Ullemar, V. (Vilhelmina), Verduci, E. (Elvira), Vonk, J. M. (Judith M.), Xu, C.-j. (Cheng-jian), Yang, I. V. (Ivana, V), Zhang, H. (Hongmei), Zhang, W. (Weiming), Karmaus, W. (Wilfried), Dabelea, D. (Dana), Muhlhausler, B. S. (Beverly S.), Breton, C. V. (Carrie, V), Lahti, J. (Jari), Almqvist, C. (Catarina), Jarvelin, M.-R. (Marjo-Riitta), Koletzko, B. (Berthold), Vrijheid, M. (Martine), Sorensen, T. I. (Thorkild I. A.), Huang, R.-C. (Rae-Chi), Arshad, S. H. (Syed Hasan), Nystad, W. (Wenche), Melen, E. (Erik), Koppelman, G. H. (Gerard H.), London, S. J. (Stephanie J.), Holland, N. (Nina), Bustamante, M. (Mariona), Murphy, S. K. (Susan K.), Hivert, M.-F. (Marie-France), Baccarelli, A. (Andrea), Relton, C. L. (Caroline L.), Snieder, H. (Harold), Jaddoe, V. W. (Vincent W. V.), Felix, J. F. (Janine F.), Vehmeijer, F. O. (Florianne O. L.), Kuepers, L. K. (Leanne K.), Sharp, G. C. (Gemma C.), Salas, L. A. (Lucas A.), Lent, S. (Samantha), Jima, D. D. (Dereje D.), Tindula, G. (Gwen), Reese, S. (Sarah), Qi, C. (Cancan), Gruzieva, O. (Olena), Page, C. (Christian), Rezwan, F. I. (Faisal, I), Melton, P. E. (Philip E.), Nohr, E. (Ellen), Escaramis, G. (Georgia), Rzehak, P. (Peter), Heiskala, A. (Anni), Gong, T. (Tong), Tuominen, S. T. (Samuli T.), Gao, L. (Lu), Ross, J. P. (Jason P.), Starling, A. P. (Anne P.), Holloway, J. W. (John W.), Yousefi, P. (Paul), Aasvang, G. M. (Gunn Marit), Beilin, L. J. (Lawrence J.), Bergstrom, A. (Anna), Binder, E. (Elisabeth), Chatzi, L. (Leda), Corpeleijn, E. (Eva), Czamara, D. (Darina), Eskenazi, B. (Brenda), Ewart, S. (Susan), Ferre, N. (Natalia), Grote, V. (Veit), Gruszfeld, D. (Dariusz), Haberg, S. E. (Siri E.), Hoyo, C. (Cathrine), Huen, K. (Karen), Karlsson, R. (Robert), Kull, I. (Inger), Langhendries, J.-P. (Jean-Paul), Lepeule, J. (Johanna), Magnus, M. C. (Maria C.), Maguire, R. L. (Rachel L.), Molloy, P. L. (Peter L.), Monnereau, C. (Claire), Mori, T. A. (Trevor A.), Oken, E. (Emily), Raikkonen, K. (Katri), Rifas-Shiman, S. (Sheryl), Ruiz-Arenas, C. (Carlos), Sebert, S. (Sylvain), Ullemar, V. (Vilhelmina), Verduci, E. (Elvira), Vonk, J. M. (Judith M.), Xu, C.-j. (Cheng-jian), Yang, I. V. (Ivana, V), Zhang, H. (Hongmei), Zhang, W. (Weiming), Karmaus, W. (Wilfried), Dabelea, D. (Dana), Muhlhausler, B. S. (Beverly S.), Breton, C. V. (Carrie, V), Lahti, J. (Jari), Almqvist, C. (Catarina), Jarvelin, M.-R. (Marjo-Riitta), Koletzko, B. (Berthold), Vrijheid, M. (Martine), Sorensen, T. I. (Thorkild I. A.), Huang, R.-C. (Rae-Chi), Arshad, S. H. (Syed Hasan), Nystad, W. (Wenche), Melen, E. (Erik), Koppelman, G. H. (Gerard H.), London, S. J. (Stephanie J.), Holland, N. (Nina), Bustamante, M. (Mariona), Murphy, S. K. (Susan K.), Hivert, M.-F. (Marie-France), Baccarelli, A. (Andrea), Relton, C. L. (Caroline L.), Snieder, H. (Harold), Jaddoe, V. W. (Vincent W. V.), and Felix, J. F. (Janine F.)

Abstract

Background: DNA methylation has been shown to be associated with adiposity in adulthood. However, whether similar DNA methylation patterns are associated with childhood and adolescent body mass index (BMI) is largely unknown. More insight into this relationship at younger ages may have implications for future prevention of obesity and its related traits. Methods: We examined whether DNA methylation in cord blood and whole blood in childhood and adolescence was associated with BMI in the age range from 2 to 18 years using both cross-sectional and longitudinal models. We performed meta-analyses of epigenome-wide association studies including up to 4133 children from 23 studies. We examined the overlap of findings reported in previous studies in children and adults with those in our analyses and calculated enrichment. Results: DNA methylation at three CpGs (cg05937453, cg25212453, and cg10040131), each in a different age range, was associated with BMI at Bonferroni significance, P < 1.06 × 10⁻⁷, with a 0.96 standard deviation score (SDS) (standard error (SE) 0.17), 0.32 SDS (SE 0.06), and 0.32 BMI SDS (SE 0.06) higher BMI per 10% increase in methylation, respectively. DNA methylation at nine additional CpGs in the cross-sectional childhood model was associated with BMI at false discovery rate significance. The strength of the associations of DNA methylation at the 187 CpGs previously identified to be associated with adult BMI, increased with advancing age across childhood and adolescence in our analyses. In addition, correlation coefficients between effect estimates for those CpGs in adults and in children and adolescents also increased. Among the top findings for each age range, we observed increasing enrichment for the CpGs that were previously identified in adults (birth Penrichment = 1; childhood Penrichment = 2.00 × 10⁻⁴; adolescence Penrichment = 2.10 × 10⁻⁷). Conclusions: There were only minimal associations of DNA methylation with childhood and adol

Published
2020

147. Novel loci for childhood body mass index and shared heritability with adult cardiometabolic traits

Author

Vogelezang, S. (Suzanne), Bradfield, J. P. (Jonathan P.), Ahluwalia, T. S. (Tarunveer S.), Curtin, J. A. (John A.), Lakka, T. A. (Timo A.), Grarup, N. (Niels), Scholz, M. (Markus), van der Most, P. J. (Peter J.), Monnereau, C. (Claire), Stergiakouli, E. (Evie), Heiskala, A. (Anni), Horikoshi, M. (Momoko), Fedko, I. O. (Iryna O.), Vilor-Tejedor, N. (Natalia), Cousminer, D. L. (Diana L.), Standl, M. (Marie), Wang, C. A. (Carol A.), Viikari, J. (Jorma), Geller, F. (Frank), iniguez, C. (Carmen), Pitkanen, N. (Niina), Chesi, A. (Alessandra), Bacelis, J. (Jonas), Yengo, L. (Loic), Torrent, M. (Maties), Ntalla, I. (Ioanna), Helgeland, O. (Oyvind), Selzam, S. (Saskia), Vonk, J. M. (Judith M.), Zafarmand, M. H. (Mohammed H.), Heude, B. (Barbara), Farooqi, I. S. (Ismaa Sadaf), Alyass, A. (Akram), Beaumont, R. N. (Robin N.), Have, C. T. (Christian T.), Rzehak, P. (Peter), Bilbao, J. R. (Jose Ramon), Schnurr, T. M. (Theresia M.), Barroso, I. (Ines), Bonnelykke, K. (Klaus), Beilin, L. J. (Lawrence J.), Carstensen, L. (Lisbeth), Charles, M.-A. (Marie-Aline), Chawes, B. (Bo), Clement, K. (Karine), Closa-Monasterolo, R. (Ricardo), Custovic, A. (Adnan), Eriksson, J. G. (Johan G.), Escribano, J. (Joaquin), Groen-Blokhuis, M. (Maria), Grote, V. (Veit), Gruszfeld, D. (Dariusz), Hakonarson, H. (Hakon), Hansen, T. (Torben), Hattersley, A. T. (Andrew T.), Hollensted, M. (Mette), Hottenga, J.-J. (Jouke-Jan), Hypponen, E. (Elina), Johansson, S. (Stefan), Joro, R. (Raimo), Kahonen, M. (Mika), Karhunen, V. (Ville), Kiess, W. (Wieland), Knight, B. A. (Bridget A.), Koletzko, B. (Berthold), Kuehnapfel, A. (Andreas), Landgraf, K. (Kathrin), Langhendries, J.-P. (Jean-Paul), Lehtimaki, T. (Terho), Leinonen, J. T. (Jaakko T.), Li, A. (Aihuali), Lindi, V. (Virpi), Lowry, E. (Estelle), Bustamante, M. (Mariona), Medina-Gomez, C. (Carolina), Melbye, M. (Mads), Michaelsen, K. F. (Kim F.), Morgen, C. S. (Camilla S.), Mori, T. A. (Trevor A.), Nielsen, T. R. (Tenna R. H.), Niinikoski, H. (Harri), Oldehinkel, A. J. (Albertine J.), Pahkala, K. (Katja), Panoutsopoulou, K. (Kalliope), Pedersen, O. (Oluf), Pennell, C. E. (Craig E.), Power, C. (Christine), Reijneveld, S. A. (Sijmen A.), Rivadeneira, F. (Fernando), Simpson, A. (Angela), Sly, P. D. (Peter D.), Stokholm, J. (Jakob), Teo, K. K. (Kook K.), Thiering, E. (Elisabeth), Timpson, N. J. (Nicholas J.), Uitterlinden, A. G. (Andre G.), van Beijsterveldt, C. E. (Catharina E. M.), van Schaik, B. D. (Barbera D. C.), Vaudel, M. (Marc), Verduci, E. (Elvira), Vinding, R. K. (Rebecca K.), Vogel, M. (Mandy), Zeggini, E. (Eleftheria), Sebert, S. (Sylvain), Lind, M. V. (Mads V.), Brown, C. D. (Christopher D.), Santa-Marina, L. (Loreto), Reischl, E. (Eva), Frithioff-Bojsoe, C. (Christine), Meyre, D. (David), Wheeler, E. (Eleanor), Ong, K. (Ken), Nohr, E. A. (Ellen A.), Vrijkotte, T. G. (Tanja G. M.), Koppelman, G. H. (Gerard H.), Plomin, R. (Robert), Njolstad, P. R. (Pal R.), Dedoussis, G. D. (George D.), Froguel, P. (Philippe), Sorensen, T. I. (Thorkild I. A.), Jacobsson, B. (Bo), Freathy, R. M. (Rachel M.), Zemel, B. S. (Babette S.), Raitakari, O. (Olli), Vrijheid, M. (Martine), Feenstra, B. (Bjarke), Lyytikainen, L.-P. (Leo-Pekka), Snieder, H. (Harold), Kirsten, H. (Holger), Holt, P. G. (Patrick G.), Heinrich, J. (Joachim), Widen, E. (Elisabeth), Sunyer, J. (Jordi), Boomsma, D. I. (Dorret I.), Jarvelin, M.-R. (Marjo-Riitta), Koerner, A. (Antje), Davey Smith, G. (George), Holm, J.-C. (Jens-Christian), Atalay, M. (Mustafa), Murray, C. (Clare), Bisgaard, H. (Hans), McCarthy, M. I. (Mark I.), Jaddoe, V. W. (Vincent W. V.), Grant, S. F. (Struan F. A.), Felix, J. F. (Janine F.), Vogelezang, S. (Suzanne), Bradfield, J. P. (Jonathan P.), Ahluwalia, T. S. (Tarunveer S.), Curtin, J. A. (John A.), Lakka, T. A. (Timo A.), Grarup, N. (Niels), Scholz, M. (Markus), van der Most, P. J. (Peter J.), Monnereau, C. (Claire), Stergiakouli, E. (Evie), Heiskala, A. (Anni), Horikoshi, M. (Momoko), Fedko, I. O. (Iryna O.), Vilor-Tejedor, N. (Natalia), Cousminer, D. L. (Diana L.), Standl, M. (Marie), Wang, C. A. (Carol A.), Viikari, J. (Jorma), Geller, F. (Frank), iniguez, C. (Carmen), Pitkanen, N. (Niina), Chesi, A. (Alessandra), Bacelis, J. (Jonas), Yengo, L. (Loic), Torrent, M. (Maties), Ntalla, I. (Ioanna), Helgeland, O. (Oyvind), Selzam, S. (Saskia), Vonk, J. M. (Judith M.), Zafarmand, M. H. (Mohammed H.), Heude, B. (Barbara), Farooqi, I. S. (Ismaa Sadaf), Alyass, A. (Akram), Beaumont, R. N. (Robin N.), Have, C. T. (Christian T.), Rzehak, P. (Peter), Bilbao, J. R. (Jose Ramon), Schnurr, T. M. (Theresia M.), Barroso, I. (Ines), Bonnelykke, K. (Klaus), Beilin, L. J. (Lawrence J.), Carstensen, L. (Lisbeth), Charles, M.-A. (Marie-Aline), Chawes, B. (Bo), Clement, K. (Karine), Closa-Monasterolo, R. (Ricardo), Custovic, A. (Adnan), Eriksson, J. G. (Johan G.), Escribano, J. (Joaquin), Groen-Blokhuis, M. (Maria), Grote, V. (Veit), Gruszfeld, D. (Dariusz), Hakonarson, H. (Hakon), Hansen, T. (Torben), Hattersley, A. T. (Andrew T.), Hollensted, M. (Mette), Hottenga, J.-J. (Jouke-Jan), Hypponen, E. (Elina), Johansson, S. (Stefan), Joro, R. (Raimo), Kahonen, M. (Mika), Karhunen, V. (Ville), Kiess, W. (Wieland), Knight, B. A. (Bridget A.), Koletzko, B. (Berthold), Kuehnapfel, A. (Andreas), Landgraf, K. (Kathrin), Langhendries, J.-P. (Jean-Paul), Lehtimaki, T. (Terho), Leinonen, J. T. (Jaakko T.), Li, A. (Aihuali), Lindi, V. (Virpi), Lowry, E. (Estelle), Bustamante, M. (Mariona), Medina-Gomez, C. (Carolina), Melbye, M. (Mads), Michaelsen, K. F. (Kim F.), Morgen, C. S. (Camilla S.), Mori, T. A. (Trevor A.), Nielsen, T. R. (Tenna R. H.), Niinikoski, H. (Harri), Oldehinkel, A. J. (Albertine J.), Pahkala, K. (Katja), Panoutsopoulou, K. (Kalliope), Pedersen, O. (Oluf), Pennell, C. E. (Craig E.), Power, C. (Christine), Reijneveld, S. A. (Sijmen A.), Rivadeneira, F. (Fernando), Simpson, A. (Angela), Sly, P. D. (Peter D.), Stokholm, J. (Jakob), Teo, K. K. (Kook K.), Thiering, E. (Elisabeth), Timpson, N. J. (Nicholas J.), Uitterlinden, A. G. (Andre G.), van Beijsterveldt, C. E. (Catharina E. M.), van Schaik, B. D. (Barbera D. C.), Vaudel, M. (Marc), Verduci, E. (Elvira), Vinding, R. K. (Rebecca K.), Vogel, M. (Mandy), Zeggini, E. (Eleftheria), Sebert, S. (Sylvain), Lind, M. V. (Mads V.), Brown, C. D. (Christopher D.), Santa-Marina, L. (Loreto), Reischl, E. (Eva), Frithioff-Bojsoe, C. (Christine), Meyre, D. (David), Wheeler, E. (Eleanor), Ong, K. (Ken), Nohr, E. A. (Ellen A.), Vrijkotte, T. G. (Tanja G. M.), Koppelman, G. H. (Gerard H.), Plomin, R. (Robert), Njolstad, P. R. (Pal R.), Dedoussis, G. D. (George D.), Froguel, P. (Philippe), Sorensen, T. I. (Thorkild I. A.), Jacobsson, B. (Bo), Freathy, R. M. (Rachel M.), Zemel, B. S. (Babette S.), Raitakari, O. (Olli), Vrijheid, M. (Martine), Feenstra, B. (Bjarke), Lyytikainen, L.-P. (Leo-Pekka), Snieder, H. (Harold), Kirsten, H. (Holger), Holt, P. G. (Patrick G.), Heinrich, J. (Joachim), Widen, E. (Elisabeth), Sunyer, J. (Jordi), Boomsma, D. I. (Dorret I.), Jarvelin, M.-R. (Marjo-Riitta), Koerner, A. (Antje), Davey Smith, G. (George), Holm, J.-C. (Jens-Christian), Atalay, M. (Mustafa), Murray, C. (Clare), Bisgaard, H. (Hans), McCarthy, M. I. (Mark I.), Jaddoe, V. W. (Vincent W. V.), Grant, S. F. (Struan F. A.), and Felix, J. F. (Janine F.)

Abstract

The genetic background of childhood body mass index (BMI), and the extent to which the well-known associations of childhood BMI with adult diseases are explained by shared genetic factors, are largely unknown. We performed a genome-wide association study meta-analysis of BMI in 61,111 children aged between 2 and 10 years. Twenty-five independent loci reached genome-wide significance in the combined discovery and replication analyses. Two of these, located near NEDD4L and SLC45A3, have not previously been reported in relation to either childhood or adult BMI. Positive genetic correlations of childhood BMI with birth weight and adult BMI, waist-to-hip ratio, diastolic blood pressure and type 2 diabetes were detected (Rg ranging from 0.11 to 0.76, P-values <0.002). A negative genetic correlation of childhood BMI with age at menarche was observed. Our results suggest that the biological processes underlying childhood BMI largely, but not completely, overlap with those underlying adult BMI. The well-known observational associations of BMI in childhood with cardio-metabolic diseases in adulthood may reflect partial genetic overlap, but in light of previous evidence, it is also likely that they are explained through phenotypic continuity of BMI from childhood into adulthood.

Published
2020

148. DNA methylation and body mass index from birth to adolescence: meta-analyses of epigenome-wide association studies

Author

Vehmeijer, Florianne, Küpers, LK, Sharp, GC, Salas, LA, Lent, S, Jima, DD, Tindula, G, Reese, S, Qi, C, Gruzieva, O, Page, C, Rezwan, FI, Melton, PE, Nohr, E, Escaramís, G, Rzehak, P, Heiskala, A, Gong, T, Tuominen, ST, Gao, L, Ross, JP, Starling, AP, Holloway, JW, Yousefi, P, Aasvang, GM, Beilin, LJ, Bergström, A, Binder, E, Chatzi, L, Corpeleijn, E, Czamara, D, Eskenazi, B, Ewart, S, Ferre, N, Grote, V, Gruszfeld, D, Håberg, SE, Hoyo, C, Huen, K, Karlsson, R, Kull, I, Langhendries, J P, Lepeule, J, Magnus, MC, Maguire, RL, Molloy, PL, Monnereau, Claire, Mori, TA, Oken, E, Räikkönen, K, Rifas-Shiman, S, Ruiz-Arenas, C, Sebert, S, Ullemar, V, Verduci, E, Vonk, JM, Xu, CJ, Yang, IV, Zhang, H, Zhang, W, Karmaus, W, Dabelea, D, Muhlhausler, BS, Breton, CV, Lahti, J, Almqvist, C, Jarvelin, M R R, Koletzko, B, Vrijheid, M, Sørensen, TIA, Huang, RC, Arshad, SH, Nystad, W, Melén, E, Koppelman, GH, London, SJ, Holland, N, Bustamante, M, Murphy, SK, Hivert, MF, Baccarelli, A, Relton, CL, Snieder, H, Jaddoe, Vincent, Felix, Janine, Vehmeijer, Florianne, Küpers, LK, Sharp, GC, Salas, LA, Lent, S, Jima, DD, Tindula, G, Reese, S, Qi, C, Gruzieva, O, Page, C, Rezwan, FI, Melton, PE, Nohr, E, Escaramís, G, Rzehak, P, Heiskala, A, Gong, T, Tuominen, ST, Gao, L, Ross, JP, Starling, AP, Holloway, JW, Yousefi, P, Aasvang, GM, Beilin, LJ, Bergström, A, Binder, E, Chatzi, L, Corpeleijn, E, Czamara, D, Eskenazi, B, Ewart, S, Ferre, N, Grote, V, Gruszfeld, D, Håberg, SE, Hoyo, C, Huen, K, Karlsson, R, Kull, I, Langhendries, J P, Lepeule, J, Magnus, MC, Maguire, RL, Molloy, PL, Monnereau, Claire, Mori, TA, Oken, E, Räikkönen, K, Rifas-Shiman, S, Ruiz-Arenas, C, Sebert, S, Ullemar, V, Verduci, E, Vonk, JM, Xu, CJ, Yang, IV, Zhang, H, Zhang, W, Karmaus, W, Dabelea, D, Muhlhausler, BS, Breton, CV, Lahti, J, Almqvist, C, Jarvelin, M R R, Koletzko, B, Vrijheid, M, Sørensen, TIA, Huang, RC, Arshad, SH, Nystad, W, Melén, E, Koppelman, GH, London, SJ, Holland, N, Bustamante, M, Murphy, SK, Hivert, MF, Baccarelli, A, Relton, CL, Snieder, H, Jaddoe, Vincent, and Felix, Janine

Published
2020

149. DNA methylation and body mass index from birth to adolescence: meta-analyses of epigenome-wide association studies

Author

Universitat Rovira i Virgili, Vehmeijer FOL; Küpers LK; Sharp GC; Salas LA; Lent S; Jima DD; Tindula G; Reese S; Qi C; Gruzieva O; Page C; Rezwan FI; Melton PE; Nohr E; Escaramís G; Rzehak P; Heiskala A; Gong T; Tuominen ST; Gao L; Ross JP; Starling AP; Holloway JW; Yousefi P; Aasvang GM; Beilin LJ; Bergström A; Binder E; Chatzi L; Corpeleijn E; Czamara D; Eskenazi B; Ewart S; Ferre N; Grote V; Gruszfeld D; Håberg SE; Hoyo C; Huen K; Karlsson R, Universitat Rovira i Virgili, and Vehmeijer FOL; Küpers LK; Sharp GC; Salas LA; Lent S; Jima DD; Tindula G; Reese S; Qi C; Gruzieva O; Page C; Rezwan FI; Melton PE; Nohr E; Escaramís G; Rzehak P; Heiskala A; Gong T; Tuominen ST; Gao L; Ross JP; Starling AP; Holloway JW; Yousefi P; Aasvang GM; Beilin LJ; Bergström A; Binder E; Chatzi L; Corpeleijn E; Czamara D; Eskenazi B; Ewart S; Ferre N; Grote V; Gruszfeld D; Håberg SE; Hoyo C; Huen K; Karlsson R

Abstract

© 2020, The Author(s). Background: DNA methylation has been shown to be associated with adiposity in adulthood. However, whether similar DNA methylation patterns are associated with childhood and adolescent body mass index (BMI) is largely unknown. More insight into this relationship at younger ages may have implications for future prevention of obesity and its related traits. Methods: We examined whether DNA methylation in cord blood and whole blood in childhood and adolescence was associated with BMI in the age range from 2 to 18 years using both cross-sectional and longitudinal models. We performed meta-analyses of epigenome-wide association studies including up to 4133 children from 23 studies. We examined the overlap of findings reported in previous studies in children and adults with those in our analyses and calculated enrichment. Results: DNA methylation at three CpGs (cg05937453, cg25212453, and cg10040131), each in a different age range, was associated with BMI at Bonferroni significance, P < 1.06 × 10−7, with a 0.96 standard deviation score (SDS) (standard error (SE) 0.17), 0.32 SDS (SE 0.06), and 0.32 BMI SDS (SE 0.06) higher BMI per 10% increase in methylation, respectively. DNA methylation at nine additional CpGs in the cross-sectional childhood model was associated with BMI at false discovery rate significance. The strength of the associations of DNA methylation at the 187 CpGs previously identified to be associated with adult BMI, increased with advancing age across childhood and adolescence in our analyses. In addition, correlation coefficients between effect estimates for those CpGs in adults and in children and adolescents also increased. Among the top findings for each age range, we observed increasing enrichment for the CpGs that were previously ide

Published
2020

150. Novel loci for childhood body mass index and shared heritability with adult cardiometabolic traits

Author

Universitat Rovira i Virgili, Vogelezang S; Bradfield JP; Ahluwalia TS; Curtin JA; Lakka TA; Grarup N; Scholz M; van der Most PJ; Monnereau C; Stergiakouli E; Heiskala A; Horikoshi M; Fedko IO; Vilor-Tejedor N; Cousminer DL; Standl M; Wang CA; Viikari J; Geller F; Íñiguez C; Pitkänen N; Chesi A; Bacelis J; Yengo L; Torrent M; Ntalla I; Helgeland Ø; Selzam S; Vonk JM; Zafarmand MH; Heude B; Farooqi IS; Alyass A; Beaumont RN; Have CT; Rzehak P; Bilbao JR; Schnurr TM; Barroso I; Bønnelykke K, Universitat Rovira i Virgili, and Vogelezang S; Bradfield JP; Ahluwalia TS; Curtin JA; Lakka TA; Grarup N; Scholz M; van der Most PJ; Monnereau C; Stergiakouli E; Heiskala A; Horikoshi M; Fedko IO; Vilor-Tejedor N; Cousminer DL; Standl M; Wang CA; Viikari J; Geller F; Íñiguez C; Pitkänen N; Chesi A; Bacelis J; Yengo L; Torrent M; Ntalla I; Helgeland Ø; Selzam S; Vonk JM; Zafarmand MH; Heude B; Farooqi IS; Alyass A; Beaumont RN; Have CT; Rzehak P; Bilbao JR; Schnurr TM; Barroso I; Bønnelykke K

Abstract

© 2020 Public Library of Science. All rights reserved. The genetic background of childhood body mass index (BMI), and the extent to which the well-known associations of childhood BMI with adult diseases are explained by shared genetic factors, are largely unknown. We performed a genome-wide association study meta-analysis of BMI in 61,111 children aged between 2 and 10 years. Twenty-five independent loci reached genome-wide significance in the combined discovery and replication analyses. Two of these, located near NEDD4L and SLC45A3, have not previously been reported in relation to either childhood or adult BMI. Positive genetic correlations of childhood BMI with birth weight and adult BMI, waist-to-hip ratio, diastolic blood pressure and type 2 diabetes were detected (Rg ranging from 0.11 to 0.76, P-values <0.002). A negative genetic correlation of childhood BMI with age at menarche was observed. Our results suggest that the biological processes underlying childhood BMI largely, but not completely, overlap with those underlying adult BMI. The well-known observational associations of BMI in childhood with cardio-metabolic diseases in adulthood may reflect partial genetic overlap, but in light of previous evidence, it is also likely that they are explained through phenotypic continuity of BMI from childhood into adulthood.

Published
2020

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