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1. Enantiospecificity in NMR Enabled by Chirality-Induced Spin Selectivity

Author

Georgiou, T., Palma, J. L., Mujica, V., Varela, S., Galante, M., Garcıa, V. Santamarıa, Mboning, L., Schwartz, R. N., Cuniberti, G., and Bouchard, L. -S.

Subjects
Condensed Matter - Soft Condensed Matter, Physics - Biological Physics, Physics - Chemical Physics
Abstract

Spin polarization in chiral molecules is a magnetic molecular response associated with electron transport and enantioselective bond polarization that occurs even in the absence of an external magnetic field. An unexpected finding by Santos and co-workers reported enantiospecific NMR responses in solid-state cross-polarization (CP) experiments, suggesting a possible additional contribution to the indirect nuclear spin-spin coupling in chiral molecules induced by bond polarization in the presence of spin-orbit coupling. Herein we provide a theoretical treatment for this phenomenon, presenting an effective spin-Hamiltonian for helical molecules like DNA and density functional theory (DFT) results on amino acids that confirm the dependence of J-couplings on the choice of enantiomer. The connection between nuclear spin dynamics and chirality could offer insights for molecular sensing and quantum information sciences. These results establish NMR as a potential tool for chiral discrimination without external agents., Comment: 102 pages, 16 figures, 40 tables

Published
2024

2. Enantiospecificity in NMR enabled by chirality-induced spin selectivity.

Author

Georgiou, T, Palma, J, Mujica, V, Varela, S, Galante, M, Santamaría-García, V, Mboning, L, Schwartz, R, Cuniberti, G, and Bouchard, L-S

Abstract

Spin polarization in chiral molecules is a magnetic molecular response associated with electron transport and enantioselective bond polarization that occurs even in the absence of an external magnetic field. An unexpected finding by Santos and co-workers reported enantiospecific NMR responses in solid-state cross-polarization (CP) experiments, suggesting a possible additional contribution to the indirect nuclear spin-spin coupling in chiral molecules induced by bond polarization in the presence of spin-orbit coupling. Herein we provide a theoretical treatment for this phenomenon, presenting an effective spin-Hamiltonian for helical molecules like DNA and density functional theory (DFT) results on amino acids that confirm the dependence of J-couplings on the choice of enantiomer. The connection between nuclear spin dynamics and chirality could offer insights for molecular sensing and quantum information sciences. These results establish NMR as a potential tool for chiral discrimination without external agents.

Published
2024

3. The impact of obesity on cardiovascular structure and function: the fetal programming era

Author

St-Pierre J, Bouchard L, and Poirier P

Subjects
Pediatrics, RJ1-570
Abstract

Julie St-Pierre1, Luigi Bouchard2,3, Paul Poirier41Department of Pediatrics, Chicoutimi Hospital, Saguenay, QC, Canada; 2Department of Biochemistry, Université de Sherbrooke, Sherbrooke, QC, Canada; 3ECOGENE-21 and Lipid Clinic, Chicoutimi Hospital, Saguenay, QC, Canada; 4Quebec Heart and Lungs Institute, Université Laval, Quebec, QC, CanadaAbstract: The burden of obesity is now well established as a precursor of cardiovascular disease and other disorders. Although better clinical guidelines exist to prevent and treat obesity, the prevalence of obesity among children and adolescents is increasing alarmingly. Primary prevention remains the gold standard to significantly reduce the public health concerns associated with obesity. Traditional cardiovascular disease risk factors (such as dyslipidemia, hypertension, type 2 diabetes) for cardiovascular disease among children and adolescents are known. The scope of this review is thus to discuss new and emerging obesity and associated-disease risk factors. Evaluation of the coronary plaque formation, diastolic dysfunction, carotid intima-media thickness and heart rate variability represent interesting tools with clinical relevance. Beyond these new cardiovascular disease risk factors, recent evidence suggests that a detrimental fetal environment, associated with for example, maternal obesity, insulin resistance, and physical inactivity, imprints fetal metabolic programming via epigenetic mechanisms that predisposes the newborn to obesity and cardiovascular disease later in life. This information may impact on the future management of maternal health, as well as for those high-risk children.Keywords: cardiovascular disease, pediatrics, risk factors

Published
2012

7. Controlled nanocrystallinity in Gd nanobowls leads to magnetization of 226 emu/g

Author

Ertas, YN and Bouchard, L-S

Subjects
Mathematical Sciences, Physical Sciences, Engineering, Applied Physics
Abstract

Gadolinium (Gd) metal is of great interest in applications such as contrast-enhanced MRI and magnetic cooling. However, it is generally difficult to produce oxide-free and highly magnetic Gd nanoparticles due to the aggressively reactive nature of Gd with oxygen. Herein, we utilized a nanofabrication route and optimization of experimental conditions to produce highly magnetic air-stable oxide-free Gd nanoparticles. The nanobowls displayed the highest saturation magnetization to date for Gd, reaching 226.4 emu/g at 2 K. The crystalline composition of Gd is found to affect the observed magnetization values: the higher magnetization is observed for nanoparticles that have a lower content of the paramagnetic face-centered cubic (fcc) phase and a greater content of the ferromagnetic hexagonal close-packed (hcp) phase. The relative fcc content was found to depend on the deposition rate of the Gd metal during the nanofabrication process, thereby correlating with altered magnetization.

Published
2017

8. Optical quenching and recovery of photoconductivity in single-crystal diamond

Author

Chen, J, Lourette, S, Rezai, K, Hoelzer, T, Lake, M, Nesladek, M, Bouchard, L-S, Hemmer, P, and Budker, D

Subjects
physics.optics, cond-mat.mes-hall, Physical Sciences, Engineering, Technology, Applied Physics
Abstract

We study the photocurrent induced by pulsed-light illumination (pulse duration is several nanoseconds) of single-crystal diamond containing nitrogen impurities. Application of additional continuous-wave light of the same wavelength quenches pulsed photocurrent. Characterization of the optically quenched photocurrent and its recovery is important for the development of diamond based electronics and sensing.

Published
2017

9. Two Band Model Interpretation of the p to n Transition in Ternary Tetradymite Topological Insulators

Author

Chasapis, T. C., Koumoulis, D., Leung, B., Calta, N. P., Lo, S. -H, Dravid, V. P., Bouchard, L. S., and Kanatzidis, M. G.

Subjects
Condensed Matter - Materials Science
Abstract

The requirement for large bulk resistivity in topological insulators has led to the design of complex ternary and quaternary phases with balanced donor and acceptor levels. A common feature of the optimized phases is that they lie close to the p to n transition. The tetradymite Bi2Te3_xSex system exhibits minimum bulk conductance at the ordered composition Bi2Te2Se. By combining local and integral measurements of the density of states, we find that the point of minimum electrical conductivity at x=1.0 where carriers change from hole-like to electron-like is characterized by conductivity of the mixed type. Our experimental findings, which are interpreted within the framework of a two band model for the different carrier types, indicate that the mixed state originates from different type of native defects that strongly compensate at the crossover point.

Published
2015

10. Surface ligand-directed pair-wise hydrogenation for heterogeneous phase hyperpolarization

Author

Glöggler, S, Grunfeld, AM, Ertas, YN, McCormick, J, Wagner, S, and Bouchard, L-S

Subjects
Inorganic Chemistry, Chemical Sciences, Bioengineering, Organic Chemistry, Chemical sciences, Engineering
Abstract

para-Hydrogen induced polarization is a technique of magnetic resonance hyperpolarization utilizing hydrogen's para-spin state for generating signal intensities at magnitudes far greater than state-of-the-art magnets. Platinum nanoparticle-catalysts with cysteine-capping are presented. The measured polarization is the highest reported to date in water, paving pathways for generating medical imaging contrast agents.

Published
2016

11. Hyperpolarization of amino acid derivatives in water for biological applications

Author

Glöggler, S, Wagner, S, and Bouchard, L-S

Subjects
Prevention, Chemical Sciences
Abstract

We report on the successful synthesis and hyperpolarization of N-unprotected α-amino acid ethyl propionate esters and extensively, on an alanine derivative hyperpolarized by PHIP (4.4 ± 1.0% 13C-polarization), meeting required levels for in vivo detection. Using water as solvent increases biocompatibility and the absence of N-protection is expected to maintain biological activity.

Published
2015

12. Diamond Magnetometry of Superconducting Thin Films

Author

Waxman, A., Schlussel, H., Groswasser, D., Acosta, V. M., Bouchard, L. -S., Budker, D., and Folman, R.

Subjects
Condensed Matter - Superconductivity, Physics - Atomic Physics, Quantum Physics
Abstract

In recent years diamond magnetometers based on the nitrogen-vacancy (NV) center have been of considerable interest for magnetometry applications at the nanoscale. An interesting application which is well suited for NV centers is the study of nanoscale magnetic phenomena in superconducting materials. We employ the magnetic sensitivity of NV centers in diamond to interrogate the magnetic properties of a thin-layer yttrium barium copper oxide (YBCO) superconductor. Using fluorescence-microscopy methods and samples integrated with an NV sensor on a microchip, we measure the temperature of phase transition in the layer to be 70.0(2) K, and the penetration field of vortices to be 46(4) G. We observe the pinning of the vortices in the layer at 65 K, and estimate their density after cooling the sample in a ~ 10 G field to be 0.45(1) \mu m^{-2}. These measurements are done with a 10 nm thick NV layer, so that high spatial resolution may be enabled in the future. Based on these results, we anticipate that this magnetometer could be useful for imaging the structure and dynamics of vortices. As an outlook, we present a fabrication method for a superconductor chip designed for this purpose.

Published
2013
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13. Polarized nuclear target based on parahydrogen induced polarization

Author

Budker, D., Ledbetter, M. P., Appelt, S., Bouchard, L. S., and Wojtsekhowski, B.

Subjects
Nuclear Experiment, Physics - Chemical Physics, Physics - Instrumentation and Detectors
Abstract

We discuss a novel concept of a polarized nuclear target for accelerator fixed-target scattering experiments, which is based on parahydrogen induced polarization (PHIP). One may be able to reach a 33% free-proton polarization in the ethane molecule. The potential advantages of such a target include operation at zero magnetic field, fast ($\sim$100 Hz) polarization reversal, and operation with large intensity of an electron beam., Comment: 16 pages, 2 figures

Published
2012
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14. Macro-scale Topology Optimization for Controlling Internal Shear Stress in a Porous Scaffold Bioreactor

Author

Youssef, K., Mack, J. J., Iruela-Arispe, M. L., and Bouchard, L. -S.

Subjects
Condensed Matter - Soft Condensed Matter, Physics - Biological Physics, Physics - Fluid Dynamics, Quantitative Biology - Subcellular Processes
Abstract

Shear stress is an important physical factor that regulates proliferation, migration and morphogenesis. In particular, the homeostasis of blood vessels is dependent on shear stress. To mimic this process ex vivo, efforts have been made to seed scaffolds with vascular and other cell types in the presence of growth factors and under pulsatile flow conditions. However, the resulting bioreactors lack information on shear stress and flow distributions within the scaffold. Consequently, it is difficult to interpret the effects of shear stress on cell function. Such knowledge would enable researchers to improve upon cell culture protocols. Recent work has focused on optimizing the microstructural parameters of the scaffold to fine tune the shear stress. In this study, we have adopted a different approach whereby flows are redirected throughout the bioreactor along channels patterned in the porous scaffold to yield shear stress distributions that are optimized for uniformity centered on a target value. A topology optimization algorithm coupled to computational fluid dynamics simulations was devised to this end. The channel topology in the porous scaffold was varied using a combination of genetic algorithm and fuzzy logic. The method is validated by experiments using magnetic resonance imaging (MRI) readouts of the flow field.

Published
2011
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15. Temperature dependence of the nitrogen-vacancy magnetic resonance in diamond

Author

Acosta, V. M., Bauch, E., Ledbetter, M. P., Waxman, A., Bouchard, L. S., and Budker, D.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

The temperature dependence of the magnetic resonance spectra of nitrogen-vacancy (NV-) ensembles in the range of 280-330 K was studied. Four samples prepared under different conditions were studied with NV- concentrations ranging from 10 ppb to 15 ppm. For all of these samples, the axial zero-field splitting (ZFS) parameter, D, was found to vary significantly with temperature, T, as dD/dT = -74.2(7) kHz/K. The transverse ZFS parameter, E, was non-zero (between 4 and 11 MHz) in all samples, and exhibited a temperature dependence of dE/(EdT) = -1.4(3) x 10^(-4) K^(-1). The results might be accounted for by considering local thermal expansion. The observation of the temperature dependence of the ZFS parameters presents a significant challenge for room-temperature diamond magnetometers and may ultimately limit their bandwidth and sensitivity., Comment: 5 pages, 2 figures, 1 table

Published
2009
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16. Nuclear-spin relaxation of $^{207}$Pb in ferroelectric powders

Author

Bouchard, L. -S., Sushkov, A. O., Budker, D., Ford, J. J., and Lipton, A. S.

Subjects
Condensed Matter - Other Condensed Matter, Physics - Atomic Physics, Quantum Physics
Abstract

Motivated by a recent proposal by O. P. Sushkov and co-workers to search for a P,T-violating Schiff moment of the $^{207}$Pb nucleus in a ferroelectric solid, we have carried out a high-field nuclear magnetic resonance study of the longitudinal and transverse spin relaxation of the lead nuclei from room temperature down to 10 K for powder samples of lead titanate (PT), lead zirconium titanate (PZT), and a PT monocrystal. For all powder samples and independently of temperature, transverse relaxation times were found to be $T_2\approx 1.5 $ms, while the longitudinal relaxation times exhibited a temperature dependence, with $T_1$ of over an hour at the lowest temperatures, decreasing to $T_1\approx 7 $s at room temperature. At high temperatures, the observed behavior is consistent with a two-phonon Raman process, while in the low temperature limit, the relaxation appears to be dominated by a single-phonon (direct) process involving magnetic impurities. This is the first study of temperature-dependent nuclear-spin relaxation in PT and PZT ferroelectrics at such low temperatures. We discuss the implications of the results for the Schiff-moment search., Comment: 6 pages, 4 figures

Published
2007
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17. Detection of nuclear magnetic resonance with an anisotropic magnetoresistive sensor

Author

Verpillat, F., Ledbetter, M. P., Budker, D., Xu, S., Michalak, D., Hilty, C., Antonijevic, S., Pines, A., and Bouchard, L. -S.

Subjects
Physics - Chemical Physics, Physics - Atomic Physics
Abstract

We report detection of nuclear magnetic resonance (NMR) using an anisotropic magnetoresistive (AMR) sensor. A ``remote-detection'' arrangement was used, in which protons in flowing water were pre-polarized in the field of a superconducting NMR magnet, adiabatically inverted, and subsequently detected with an AMR sensor situated downstream from the magnet and the adiabatic inverter. AMR sensing is well suited for NMR detection in microfluidic ``lab-on-a-chip'' applications., Comment: 3 pages, 3 figures

Published
2007
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20. 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

21. 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

24. Ureteral Tumors

Author

Plante, Ph., Smayra, T., Bouchard, L., Joffre, F., Seguin, P., Escourrou, G., Otal, Ph., Baert, A. L., editor, Sartor, K., editor, Joffre, Francis, editor, Otal, Philippe, editor, and Soulie, Michel, editor

Published
2003
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25. Techniques of Ureteral Imaging

Author

Otal, Ph., Claudon, M., Joffre, F., Soulie, M., Bouchard, L., Millan, M. I., Bennaceur, M., Victor, G., Baert, A. L., editor, Sartor, K., editor, Joffre, Francis, editor, Otal, Philippe, editor, and Soulie, Michel, editor

Published
2003
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26. Inflammatory Diseases of the Ureter

Author

Chemla, P., Smayra, T., Bouchard, L., Mazerolles, M., Otal, Ph., Grenier, N., Joffre, F., Baert, A. L., editor, Sartor, K., editor, Joffre, Francis, editor, Otal, Philippe, editor, and Soulie, Michel, editor

Published
2003
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27. Ureteral Obstruction

Author

Smayra, T., Otal, Ph., Bouchard, L., D’Othee, B. Janne, Lefevre, F., Claudon, M., Irsutti, M., Joffre, F., Baert, A. L., editor, Sartor, K., editor, Joffre, Francis, editor, Otal, Philippe, editor, and Soulie, Michel, editor

Published
2003
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28. Strategy for Ureteral Imaging

Author

Sarramon, J. P., Joffre, F., Janne d’Othee, B., Bouchard, L., Otal, Ph., Plante, P., Baert, A. L., editor, Sartor, K., editor, Joffre, Francis, editor, Otal, Philippe, editor, and Soulie, Michel, editor

Published
2003
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29. Interventional Radiology of the Ureter

Author

Rousseau, H., Millan, M. I., Bouchard, L., Soulie, M., Joffre, F., Smayra, T., Baert, A. L., editor, Sartor, K., editor, Joffre, Francis, editor, Otal, Philippe, editor, and Soulie, Michel, editor

Published
2003
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30. Miscellaneous

Author

Bouchard, L., Rischmann, P., Smayra, T., Chemali, R., Soulie, M., Moussouni, S., Otal, Ph., Joffre, F., Baert, A. L., editor, Sartor, K., editor, Joffre, Francis, editor, Otal, Philippe, editor, and Soulie, Michel, editor

Published
2003
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31. 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

32. A meta-analysis of pre-pregnancy maternal body mass index and placental DNA methylation identifies 27 CpG sites with implications for mother-child health

Author

Fernandez-Jimenez, N, Fore, R, Cilleros-Portet, A, Lepeule, J, Perron, P, Kvist, T, Tian, F-Y, Lesseur, C, Binder, AM, Lozano, M, Martorell-Marugan, J, Loke, YJ, Bakulski, KM, Zhu, Y, Forhan, A, Sammallahti, S, Everson, TM, Chen, J, Michels, KB, Belmonte, T, Carmona-Saez, P, Halliday, J, Fallin, MD, LaSalle, JM, Tost, J, Czamara, D, Fernandez, MF, Gomez-Martin, A, Craig, JM, Gonzalez-Alzaga, B, Schmidt, RJ, Dou, JF, Muggli, E, Lacasana, M, Vrijheid, M, Marsit, CJ, Karagas, MR, Raikkonen, K, Bouchard, L, Heude, B, Santa-Marina, L, Bustamante, M, Hivert, M-F, Bilbao, JR, Fernandez-Jimenez, N, Fore, R, Cilleros-Portet, A, Lepeule, J, Perron, P, Kvist, T, Tian, F-Y, Lesseur, C, Binder, AM, Lozano, M, Martorell-Marugan, J, Loke, YJ, Bakulski, KM, Zhu, Y, Forhan, A, Sammallahti, S, Everson, TM, Chen, J, Michels, KB, Belmonte, T, Carmona-Saez, P, Halliday, J, Fallin, MD, LaSalle, JM, Tost, J, Czamara, D, Fernandez, MF, Gomez-Martin, A, Craig, JM, Gonzalez-Alzaga, B, Schmidt, RJ, Dou, JF, Muggli, E, Lacasana, M, Vrijheid, M, Marsit, CJ, Karagas, MR, Raikkonen, K, Bouchard, L, Heude, B, Santa-Marina, L, Bustamante, M, Hivert, M-F, and Bilbao, JR

Abstract

Higher maternal pre-pregnancy body mass index (ppBMI) is associated with increased neonatal morbidity, as well as with pregnancy complications and metabolic outcomes in offspring later in life. The placenta is a key organ in fetal development and has been proposed to act as a mediator between the mother and different health outcomes in children. The overall aim of the present work is to investigate the association of ppBMI with epigenome-wide placental DNA methylation (DNAm) in 10 studies from the PACE consortium, amounting to 2631 mother-child pairs. We identify 27 CpG sites at which we observe placental DNAm variations of up to 2.0% per 10 ppBMI-unit. The CpGs that are differentially methylated in placenta do not overlap with CpGs identified in previous studies in cord blood DNAm related to ppBMI. Many of the identified CpGs are located in open sea regions, are often close to obesity-related genes such as GPX1 and LGR4 and altogether, are enriched in cancer and oxidative stress pathways. Our findings suggest that placental DNAm could be one of the mechanisms by which maternal obesity is associated with metabolic health outcomes in newborns and children, although further studies will be needed in order to corroborate these findings.

Published
2022

33. Multi-ancestry genome-wide association study of gestational diabetes mellitus highlights genetic links with type 2 diabetes

Author

Pervjakova, N. (Natalia), Moen, G.-H. (Gunn-Helen), Borges, M.-C. (Maria-Carolina), Ferreira, T. (Teresa), Cook, J. P. (James P.), Allard, C. (Catherine), Beaumont, R. N. (Robin N.), Canouil, M. (Mickael), Hatem, G. (Gad), Heiskala, A. (Anni), Joensuu, A. (Anni), Karhunen, V. (Ville), Kwak, S. H. (Soo Heon), Lin, F. T. (Frederick T. J.), Liu, J. (Jun), Rifas-Shiman, S. (Sheryl), Tam, C. H. (Claudia H.), Tam, W. H. (Wing Hung), Thorleifsson, G. (Gudmar), Andrew, T. (Toby), Auvinen, J. (Juha), Bhowmik, B. (Bishwajit), Bonnefond, A. (Amelie), Delahaye, F. (Fabien), Demirkan, A. (Ayse), Froguel, P. (Philippe), Haller-Kikkatalo, K. (Kadri), Hardardottir, H. (Hildur), Hummel, S. (Sandra), Hussain, A. (Akhtar), Kajantie, E. (Eero), Keikkala, E. (Elina), Khamis, A. (Amna), Lahti, J. (Jari), Lekva, T. (Tove), Mustaniemi, S. (Sanna), Sommer, C. (Christine), Tagoma, A. (Aili), Tzala, E. (Evangelia), Uibo, R. (Raivo), Vääräsmäki, M. (Marja), Villa, P. M. (Pia M.), Birkeland, K. I. (Kare, I), Bouchard, L. (Luigi), Duijn, C. M. (Cornelia M.), Finer, S. (Sarah), Groop, L. (Leif), Hamalainen, E. (Esa), Hayes, G. M. (Geoffrey M.), Hitman, G. A. (Graham A.), Jang, H. C. (Hak C.), Järvelin, M.-R. (Marjo-Riitta), Jenum, A. K. (Anne Karen), Laivuori, H. (Hannele), Ma, R. C. (Ronald C.), Melander, O. (Olle), Oken, E. (Emily), Park, K. S. (Kyong Soo), Perron, P. (Patrice), Prasad, R. B. (Rashmi B.), Qvigstad, E. (Elisabeth), Sebert, S. (Sylvain), Stefansson, K. (Kari), Steinthorsdottir, V. (Valgerdur), Tuomi, T. (Tiinamaija), Hivert, M.-F. (Marie-France), Franks, P. W. (Paul W.), McCarthy, M. I. (Mark, I), Lindgren, C. M. (Cecilia M.), Freathy, R. M. (Rachel M.), Lawlor, D. A. (Deborah A.), Morris, A. P. (Andrew P.), Magi, R. (Reedik), Pervjakova, N. (Natalia), Moen, G.-H. (Gunn-Helen), Borges, M.-C. (Maria-Carolina), Ferreira, T. (Teresa), Cook, J. P. (James P.), Allard, C. (Catherine), Beaumont, R. N. (Robin N.), Canouil, M. (Mickael), Hatem, G. (Gad), Heiskala, A. (Anni), Joensuu, A. (Anni), Karhunen, V. (Ville), Kwak, S. H. (Soo Heon), Lin, F. T. (Frederick T. J.), Liu, J. (Jun), Rifas-Shiman, S. (Sheryl), Tam, C. H. (Claudia H.), Tam, W. H. (Wing Hung), Thorleifsson, G. (Gudmar), Andrew, T. (Toby), Auvinen, J. (Juha), Bhowmik, B. (Bishwajit), Bonnefond, A. (Amelie), Delahaye, F. (Fabien), Demirkan, A. (Ayse), Froguel, P. (Philippe), Haller-Kikkatalo, K. (Kadri), Hardardottir, H. (Hildur), Hummel, S. (Sandra), Hussain, A. (Akhtar), Kajantie, E. (Eero), Keikkala, E. (Elina), Khamis, A. (Amna), Lahti, J. (Jari), Lekva, T. (Tove), Mustaniemi, S. (Sanna), Sommer, C. (Christine), Tagoma, A. (Aili), Tzala, E. (Evangelia), Uibo, R. (Raivo), Vääräsmäki, M. (Marja), Villa, P. M. (Pia M.), Birkeland, K. I. (Kare, I), Bouchard, L. (Luigi), Duijn, C. M. (Cornelia M.), Finer, S. (Sarah), Groop, L. (Leif), Hamalainen, E. (Esa), Hayes, G. M. (Geoffrey M.), Hitman, G. A. (Graham A.), Jang, H. C. (Hak C.), Järvelin, M.-R. (Marjo-Riitta), Jenum, A. K. (Anne Karen), Laivuori, H. (Hannele), Ma, R. C. (Ronald C.), Melander, O. (Olle), Oken, E. (Emily), Park, K. S. (Kyong Soo), Perron, P. (Patrice), Prasad, R. B. (Rashmi B.), Qvigstad, E. (Elisabeth), Sebert, S. (Sylvain), Stefansson, K. (Kari), Steinthorsdottir, V. (Valgerdur), Tuomi, T. (Tiinamaija), Hivert, M.-F. (Marie-France), Franks, P. W. (Paul W.), McCarthy, M. I. (Mark, I), Lindgren, C. M. (Cecilia M.), Freathy, R. M. (Rachel M.), Lawlor, D. A. (Deborah A.), Morris, A. P. (Andrew P.), and Magi, R. (Reedik)

Abstract

Gestational diabetes mellitus (GDM) is associated with increased risk of pregnancy complications and adverse perinatal outcomes. GDM often reoccurs and is associated with increased risk of subsequent diagnosis of type 2 diabetes (T2D). To improve our understanding of the aetiological factors and molecular processes driving the occurrence of GDM, including the extent to which these overlap with T2D pathophysiology, the GENetics of Diabetes In Pregnancy Consortium assembled genome-wide association studies of diverse ancestry in a total of 5485 women with GDM and 347 856 without GDM. Through multi-ancestry meta-analysis, we identified five loci with genome-wide significant association (P < 5 x 10-8) with GDM, mapping to/near MTNR1B (P = 4.3 x 10-54), TCF7L2 (P = 4.0 x 10-16), CDKAL1 (P = 1.6 x 10-14), CDKN2A-CDKN2B (P = 4.1 x 10-9) and HKDC1 (P = 2.9 x 10-8). Multiple lines of evidence pointed to the shared pathophysiology of GDM and T2D: (i) four of the five GDM loci (not HKDC1) have been previously reported at genome-wide significance for T2D; (ii) significant enrichment for associations with GDM at previously reported T2D loci; (iii) strong genetic correlation between GDM and T2D and (iv) enrichment of GDM associations mapping to genomic annotations in diabetes-relevant tissues and transcription factor binding sites. Mendelian randomization analyses demonstrated significant causal association (5% false discovery rate) of higher body mass index on increased GDM risk. Our results provide support for the hypothesis that GDM and T2D are part of the same underlying pathology but that, as exemplified by the HKDC1 locus, there are genetic determinants of GDM that are specific to glucose regulation in pregnancy.

Published
2022

34. 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

36. Placental DNA methylation signatures of maternal smoking during pregnancy and potential impacts on fetal growth

Author

Everson, TM, Vives-Usano, M, Seyve, E, Cardenas, A, Lacasaña, M, Craig, Jeffrey, Lesseur, C, Baker, ER, Fernandez-Jimenez, N, Heude, B, Perron, P, Gónzalez-Alzaga, B, Halliday, J, Deyssenroth, MA, Karagas, MR, Íñiguez, C, Bouchard, L, Carmona-Sáez, P, Loke, YJ, Hao, K, Belmonte, T, Charles, MA, Martorell-Marugán, J, Muggli, E, Chen, J, Fernández, MF, Tost, J, Gómez-Martín, A, London, SJ, Sunyer, J, Marsit, CJ, Lepeule, J, Hivert, MF, Bustamante, M, Everson, TM, Vives-Usano, M, Seyve, E, Cardenas, A, Lacasaña, M, Craig, Jeffrey, Lesseur, C, Baker, ER, Fernandez-Jimenez, N, Heude, B, Perron, P, Gónzalez-Alzaga, B, Halliday, J, Deyssenroth, MA, Karagas, MR, Íñiguez, C, Bouchard, L, Carmona-Sáez, P, Loke, YJ, Hao, K, Belmonte, T, Charles, MA, Martorell-Marugán, J, Muggli, E, Chen, J, Fernández, MF, Tost, J, Gómez-Martín, A, London, SJ, Sunyer, J, Marsit, CJ, Lepeule, J, Hivert, MF, and Bustamante, M

Abstract

AbstractMaternal smoking during pregnancy (MSDP) contributes to poor birth outcomes, in part through disrupted placental functions, which may be reflected in the placental epigenome. Here we present a meta-analysis of the associations between MSDP and placental DNA methylation (DNAm) and between DNAm and birth outcomes within the Pregnancy And Childhood Epigenetics (PACE) consortium (N = 1700, 344 with MSDP). We identify 443 CpGs that are associated with MSDP, of which 142 associated with birth outcomes, 40 associated with gene expression, and 13 CpGs are associated with all three. Only two CpGs have consistent associations from a prior meta-analysis of cord blood DNAm, demonstrating substantial tissue-specific responses to MSDP. The placental MSDP-associated CpGs are enriched for environmental response genes, growth-factor signaling, and inflammation, which play important roles in placental function. We demonstrate links between placental DNAm, MSDP and poor birth outcomes, which may better inform the mechanisms through which MSDP impacts placental function and fetal growth.

Published
2021

39. Epigenome-wide meta-analysis of blood DNA methylation in newborns and children identifies numerous loci related to gestational age

Author

Merid, S.K. (Simon Kebede), Novoloaca, A. (Alexei), Sharp, G.C. (Gemma C.), Küpers, A.M. (Marlijn), Kho, A.T. (Alvin T.), Roy, R. (Ritu), Gao, L. (Lu), Annesi-Maesano, I. (Isabella), Jain, P. (Pooja), Plusquin, M. (Michelle), Kogevinas, M. (Manolis), Allard, C. (Catherine), Vehmeijer, F.O.L. (Florianne O.L.), Kazmi, N. (Nabila), Salas, L.A. (Lucas A.), Rezwan, F.I. (Faisal I.), Zhang, H. (Hongmei), Sebert, S. (Sylvain), Czamara, D. (Darina), Rifas-Shiman, S.L. (Sheryl), Melton, P.E. (Phillip E.), Lawlor, D.A. (Debbie A.), Pershagen, G. (Göran), Breton, C. (Carrie), Huen, K. (Karen), Baïz, N. (Nour), Gagliardi, L. (Luigi), Nawrot, T.S. (Tim S.), Corpeleijn, E. (Eva), Perron, P. (Patrice), Duijts, L. (Liesbeth), Nohr, C. (Christian), Bustamante, M. (Mariona), Ewart, S. (Susan), Karmaus, W. (Wilfried), Zhao, S. (Shanshan), Page, C.M. (Christian M.), Herceg, Z. (Zdenko), Jarvelin, M.-R. (Marjo-Riitta), Lahti, J. (Jari), Baccarelli, A.A. (Andrea), Anderson, D. (Denise), Kachroo, P. (Priyadarshini), Relton, C.L. (Caroline), Bergström, A. (Anna), Eskenazi, B. (B.), Soomro, M.H. (Munawar Hussain), Vineis, P. (Paolo), Snieder, H. (Harold), Bouchard, L. (Luigi), Jaddoe, V.W.V. (Vincent), Sørensen, T.I.A. (Thorkild), Vrijheid, M. (Martine), Arshad, S.H. (Syed), Holloway, J.W. (John W.), Håberg, S.E. (Siri E), Magnus, P. (Per), Dwyer, T. (Terence), Binder, E.B. (Elisabeth), Demeo, D.L. (Dawn), Vonk, J.M. (Judith), Newnham, J.P. (John), Tantisira, K.G. (Kelan G.), Kull, C.A. (Christian), Wiemels, J. (Joseph), Heude, B. (Barbara), Sunyer, J. (Jordi), Nystad, W. (Wenche), Munthe-Kaas, M.C. (Monica Cheng), Räikkönen, K. (Katri), Oken, E. (Emily), Huang, R.-C. (Rae-Chi), Weiss, S.T. (Scott T.), Antó, J.M. (Josep Maria), Bousquet, J. (Jean), Kumar, A. (Ashish), Söderhäll, C. (Cilla), Almqvist, C. (Catarina), Cardenas, A. (Andres), Gruzieva, O. (Olena), Xu, C.-J. (Cheng-Jian), Reese, S.E. (Sarah E.), Kere, J. (Juha), Brodin, P. (Petter), Solomon, O. (Olivia), Wielscher, M. (Matthias), Holland, N. (Nina), Ghantous, A. (Akram), Hivert, M.-F. (Marie-France), Felix, J.F. (Janine), Koppelman, G.H. (Gerard), London, S.J. (Stephanie J.), Melén, E. (Erik), Merid, S.K. (Simon Kebede), Novoloaca, A. (Alexei), Sharp, G.C. (Gemma C.), Küpers, A.M. (Marlijn), Kho, A.T. (Alvin T.), Roy, R. (Ritu), Gao, L. (Lu), Annesi-Maesano, I. (Isabella), Jain, P. (Pooja), Plusquin, M. (Michelle), Kogevinas, M. (Manolis), Allard, C. (Catherine), Vehmeijer, F.O.L. (Florianne O.L.), Kazmi, N. (Nabila), Salas, L.A. (Lucas A.), Rezwan, F.I. (Faisal I.), Zhang, H. (Hongmei), Sebert, S. (Sylvain), Czamara, D. (Darina), Rifas-Shiman, S.L. (Sheryl), Melton, P.E. (Phillip E.), Lawlor, D.A. (Debbie A.), Pershagen, G. (Göran), Breton, C. (Carrie), Huen, K. (Karen), Baïz, N. (Nour), Gagliardi, L. (Luigi), Nawrot, T.S. (Tim S.), Corpeleijn, E. (Eva), Perron, P. (Patrice), Duijts, L. (Liesbeth), Nohr, C. (Christian), Bustamante, M. (Mariona), Ewart, S. (Susan), Karmaus, W. (Wilfried), Zhao, S. (Shanshan), Page, C.M. (Christian M.), Herceg, Z. (Zdenko), Jarvelin, M.-R. (Marjo-Riitta), Lahti, J. (Jari), Baccarelli, A.A. (Andrea), Anderson, D. (Denise), Kachroo, P. (Priyadarshini), Relton, C.L. (Caroline), Bergström, A. (Anna), Eskenazi, B. (B.), Soomro, M.H. (Munawar Hussain), Vineis, P. (Paolo), Snieder, H. (Harold), Bouchard, L. (Luigi), Jaddoe, V.W.V. (Vincent), Sørensen, T.I.A. (Thorkild), Vrijheid, M. (Martine), Arshad, S.H. (Syed), Holloway, J.W. (John W.), Håberg, S.E. (Siri E), Magnus, P. (Per), Dwyer, T. (Terence), Binder, E.B. (Elisabeth), Demeo, D.L. (Dawn), Vonk, J.M. (Judith), Newnham, J.P. (John), Tantisira, K.G. (Kelan G.), Kull, C.A. (Christian), Wiemels, J. (Joseph), Heude, B. (Barbara), Sunyer, J. (Jordi), Nystad, W. (Wenche), Munthe-Kaas, M.C. (Monica Cheng), Räikkönen, K. (Katri), Oken, E. (Emily), Huang, R.-C. (Rae-Chi), Weiss, S.T. (Scott T.), Antó, J.M. (Josep Maria), Bousquet, J. (Jean), Kumar, A. (Ashish), Söderhäll, C. (Cilla), Almqvist, C. (Catarina), Cardenas, A. (Andres), Gruzieva, O. (Olena), Xu, C.-J. (Cheng-Jian), Reese, S.E. (Sarah E.), Kere, J. (Juha), Brodin, P. (Petter), Solomon, O. (Olivia), Wielscher, M. (Matthias), Holland, N. (Nina), Ghantous, A. (Akram), Hivert, M.-F. (Marie-France), Felix, J.F. (Janine), Koppelman, G.H. (Gerard), London, S.J. (Stephanie J.), and Melén, E. (Erik)

Abstract

BACKGROUND: Preterm birth and shorter duration of pregnancy are associated with increased morbidity in neonatal and later life. As the epigenome is known to have an important role during fetal development, we investigated associations between gestational age and blood DNA methylation in children. METHODS: We performed meta-analysis of Illumina's HumanMethylation450-array associations between gestational age and cord blood DNA methylation in 3648 newborns from 17 cohorts without common pregnancy complications, induced delivery or caesarean section. We also explored associations of gestational age with DNA methylation measured at 4-18 years in additional pediatric cohorts. Follow-up analyses of DNA methylation and gene expression correlations were performed in cord blood. DNA methylation profiles were also explored in tissues relevant for gestational age health effects: fetal brain and lung. RESULTS: We identified 8899 CpGs in cord blood that were associated with gestational age (range 27-42 weeks), at Bonferroni significance, P < 1.06 × 10- 7, of which 3343 were novel. These were annotated to 4966 genes. After restricting findings to at least three significant adjacent CpGs, we identified 1276 CpGs annotated to 325 genes. Results were generally consistent when analyses were restricted to term births. Cord blood findings tended not to persist into childhood and adolescence. Pathway analyses identified enrichment for biological processes critical to embryonic development. Follow-up of identified genes showed correlations between gestational age and DNA methylation levels in fetal brain and lung tissue, as well as correlation with expression levels. CONCLUSIONS: We identified numerous CpGs differentially methylated in relation to gestational age at birth that appear to reflect fetal developmental processes across tissues. These findings may contribute to understanding mechanisms linking gestational age to health effects.

Published
2020
Full Text
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40. Epigenome-wide meta-analysis of blood DNA methylation in newborns and children identifies numerous loci related to gestational age

Author

Merid, SK, Novoloaca, A, Sharp, GC, Kupers, LK, Kho, AT, Roy, R, Gao, L, Annesi-Maesano, I, Jain, P, Plusquin, M, Kogevinas, M, Allard, C, Vehmeijer, FO, Kazmi, N, Salas, LA, Rezwan, FI, Zhang, H, Sebert, S, Czamara, D, Rifas-Shiman, SL, Melton, PE, Lawlor, DA, Pershagen, G, Breton, CV, Huen, K, Baiz, N, Gagliardi, L, Nawrot, TS, Corpeleijn, E, Perron, P, Duijts, L, Nohr, EA, Bustamante, M, Ewart, SL, Karmaus, W, Zhao, S, Page, CM, Herceg, Z, Jarvelin, M-R, Lahti, J, Baccarelli, AA, Anderson, D, Kachroo, P, Relton, CL, Bergstrom, A, Eskenazi, B, Soomro, MH, Vineis, P, Snieder, H, Bouchard, L, Jaddoe, VW, Sorensen, TIA, Vrijheid, M, Arshad, SH, Holloway, JW, Haberg, SE, Magnus, P, Dwyer, T, Binder, EB, DeMeo, DL, Vonk, JM, Newnham, J, Tantisira, KG, Kull, I, Wiemels, JL, Heude, B, Sunyer, J, Nystad, W, Munthe-Kaas, MC, Raikkonen, K, Oken, E, Huang, R-C, Weiss, ST, Anto, JM, Bousquet, J, Kumar, A, Soderhall, C, Almqvist, C, Cardenas, A, Gruzieva, O, Xu, C-J, Reese, SE, Kere, J, Brodin, P, Solomon, O, Wielscher, M, Holland, N, Ghantous, A, Hivert, M-F, Felix, JF, Koppelman, GH, London, SJ, Melen, E, Merid, SK, Novoloaca, A, Sharp, GC, Kupers, LK, Kho, AT, Roy, R, Gao, L, Annesi-Maesano, I, Jain, P, Plusquin, M, Kogevinas, M, Allard, C, Vehmeijer, FO, Kazmi, N, Salas, LA, Rezwan, FI, Zhang, H, Sebert, S, Czamara, D, Rifas-Shiman, SL, Melton, PE, Lawlor, DA, Pershagen, G, Breton, CV, Huen, K, Baiz, N, Gagliardi, L, Nawrot, TS, Corpeleijn, E, Perron, P, Duijts, L, Nohr, EA, Bustamante, M, Ewart, SL, Karmaus, W, Zhao, S, Page, CM, Herceg, Z, Jarvelin, M-R, Lahti, J, Baccarelli, AA, Anderson, D, Kachroo, P, Relton, CL, Bergstrom, A, Eskenazi, B, Soomro, MH, Vineis, P, Snieder, H, Bouchard, L, Jaddoe, VW, Sorensen, TIA, Vrijheid, M, Arshad, SH, Holloway, JW, Haberg, SE, Magnus, P, Dwyer, T, Binder, EB, DeMeo, DL, Vonk, JM, Newnham, J, Tantisira, KG, Kull, I, Wiemels, JL, Heude, B, Sunyer, J, Nystad, W, Munthe-Kaas, MC, Raikkonen, K, Oken, E, Huang, R-C, Weiss, ST, Anto, JM, Bousquet, J, Kumar, A, Soderhall, C, Almqvist, C, Cardenas, A, Gruzieva, O, Xu, C-J, Reese, SE, Kere, J, Brodin, P, Solomon, O, Wielscher, M, Holland, N, Ghantous, A, Hivert, M-F, Felix, JF, Koppelman, GH, London, SJ, and Melen, E

Abstract

BACKGROUND: Preterm birth and shorter duration of pregnancy are associated with increased morbidity in neonatal and later life. As the epigenome is known to have an important role during fetal development, we investigated associations between gestational age and blood DNA methylation in children. METHODS: We performed meta-analysis of Illumina's HumanMethylation450-array associations between gestational age and cord blood DNA methylation in 3648 newborns from 17 cohorts without common pregnancy complications, induced delivery or caesarean section. We also explored associations of gestational age with DNA methylation measured at 4-18 years in additional pediatric cohorts. Follow-up analyses of DNA methylation and gene expression correlations were performed in cord blood. DNA methylation profiles were also explored in tissues relevant for gestational age health effects: fetal brain and lung. RESULTS: We identified 8899 CpGs in cord blood that were associated with gestational age (range 27-42 weeks), at Bonferroni significance, P < 1.06 × 10- 7, of which 3343 were novel. These were annotated to 4966 genes. After restricting findings to at least three significant adjacent CpGs, we identified 1276 CpGs annotated to 325 genes. Results were generally consistent when analyses were restricted to term births. Cord blood findings tended not to persist into childhood and adolescence. Pathway analyses identified enrichment for biological processes critical to embryonic development. Follow-up of identified genes showed correlations between gestational age and DNA methylation levels in fetal brain and lung tissue, as well as correlation with expression levels. CONCLUSIONS: We identified numerous CpGs differentially methylated in relation to gestational age at birth that appear to reflect fetal developmental processes across tissues. These findings may contribute to understanding mechanisms linking gestational age to health effects.

Published
2020

41. Epigenome-wide meta-analysis of blood DNA methylation in newborns and children identifies numerous loci related to gestational age

Author

Merid, S. K. (Simon Kebede), Novoloaca, A. (Alexei), Sharp, G. C. (Gemma C.), Kupers, L. K. (Leanne K.), Kho, A. T. (Alvin T.), Roy, R. (Ritu), Gao, L. (Lu), Annesi-Maesano, I. (Isabella), Jain, P. (Pooja), Plusquin, M. (Michelle), Kogevinas, M. (Manolis), Allard, C. (Catherine), Vehmeijer, F. O. (Florianne O.), Kazmi, N. (Nabila), Salas, L. A. (Lucas A.), Rezwan, F. I. (Faisal I.), Zhang, H. (Hongmei), Sebert, S. (Sylvain), Czamara, D. (Darina), Rifas-Shiman, S. L. (Sheryl L.), Melton, P. E. (Phillip E.), Lawlor, D. A. (Debbie A.), Pershagen, G. (Goran), Breton, C. V. (Carrie V.), Huen, K. (Karen), Baiz, N. (Nour), Gagliardi, L. (Luigi), Nawrot, T. S. (Tim S.), Corpeleijn, E. (Eva), Perron, P. (Patrice), Duijts, L. (Liesbeth), Nohr, E. A. (Ellen Aagaard), Bustamante, M. (Mariona), Ewart, S. L. (Susan L.), Karmaus, W. (Wilfried), Zhao, S. (Shanshan), Page, C. M. (Christian M.), Herceg, Z. (Zdenko), Jarvelin, M.-R. (Marjo-Riitta), Lahti, J. (Jari), Baccarelli, A. A. (Andrea A.), Anderson, D. (Denise), Kachroo, P. (Priyadarshini), Relton, C. L. (Caroline L.), Bergstrom, A. (Anna), Eskenazi, B. (Brenda), Soomro, M. H. (Munawar Hussain), Vineis, P. (Paolo), Snieder, H. (Harold), Bouchard, L. (Luigi), Jaddoe, V. W. (Vincent W.), Sorensen, T. I. (Thorkild I. A.), Vrijheid, M. (Martine), Arshad, S. H. (S. Hasan), Holloway, J. W. (John W.), Haberg, S. E. (Siri E.), Magnus, P. (Per), Dwyer, T. (Terence), Binder, E. B. (Elisabeth B.), DeMeo, D. L. (Dawn L.), Vonk, J. M. (Judith M.), Newnham, J. (John), Tantisira, K. G. (Kelan G.), Kull, I. (Inger), Wiemels, J. L. (Joseph L.), Heude, B. (Barbara), Sunyer, J. (Jordi), Nystad, W. (Wenche), Munthe-Kaas, M. C. (Monica C.), Raikkonen, K. (Katri), Oken, E. (Emily), Huang, R.-C. (Rae-Chi), Weiss, S. T. (Scott T.), Anto, J. M. (Josep Maria), Bousquet, J. (Jean), Kumar, A. (Ashish), Soderhall, C. (Cilla), Almqvist, C. (Catarina), Cardenas, A. (Andres), Gruzieva, O. (Olena), Xu, C.-J. (Cheng-Jian), Reese, S. E. (Sarah E.), Kere, J. (Juha), Brodin, P. (Petter), Solomon, O. (Olivia), Wielscher, M. (Matthias), Holland, N. (Nina), Ghantous, A. (Akram), Hivert, M.-F. (Marie-France), Felix, J. F. (Janine F.), Koppelman, G. H. (Gerard H.), London, S. J. (Stephanie J.), Melen, E. (Erik), Merid, S. K. (Simon Kebede), Novoloaca, A. (Alexei), Sharp, G. C. (Gemma C.), Kupers, L. K. (Leanne K.), Kho, A. T. (Alvin T.), Roy, R. (Ritu), Gao, L. (Lu), Annesi-Maesano, I. (Isabella), Jain, P. (Pooja), Plusquin, M. (Michelle), Kogevinas, M. (Manolis), Allard, C. (Catherine), Vehmeijer, F. O. (Florianne O.), Kazmi, N. (Nabila), Salas, L. A. (Lucas A.), Rezwan, F. I. (Faisal I.), Zhang, H. (Hongmei), Sebert, S. (Sylvain), Czamara, D. (Darina), Rifas-Shiman, S. L. (Sheryl L.), Melton, P. E. (Phillip E.), Lawlor, D. A. (Debbie A.), Pershagen, G. (Goran), Breton, C. V. (Carrie V.), Huen, K. (Karen), Baiz, N. (Nour), Gagliardi, L. (Luigi), Nawrot, T. S. (Tim S.), Corpeleijn, E. (Eva), Perron, P. (Patrice), Duijts, L. (Liesbeth), Nohr, E. A. (Ellen Aagaard), Bustamante, M. (Mariona), Ewart, S. L. (Susan L.), Karmaus, W. (Wilfried), Zhao, S. (Shanshan), Page, C. M. (Christian M.), Herceg, Z. (Zdenko), Jarvelin, M.-R. (Marjo-Riitta), Lahti, J. (Jari), Baccarelli, A. A. (Andrea A.), Anderson, D. (Denise), Kachroo, P. (Priyadarshini), Relton, C. L. (Caroline L.), Bergstrom, A. (Anna), Eskenazi, B. (Brenda), Soomro, M. H. (Munawar Hussain), Vineis, P. (Paolo), Snieder, H. (Harold), Bouchard, L. (Luigi), Jaddoe, V. W. (Vincent W.), Sorensen, T. I. (Thorkild I. A.), Vrijheid, M. (Martine), Arshad, S. H. (S. Hasan), Holloway, J. W. (John W.), Haberg, S. E. (Siri E.), Magnus, P. (Per), Dwyer, T. (Terence), Binder, E. B. (Elisabeth B.), DeMeo, D. L. (Dawn L.), Vonk, J. M. (Judith M.), Newnham, J. (John), Tantisira, K. G. (Kelan G.), Kull, I. (Inger), Wiemels, J. L. (Joseph L.), Heude, B. (Barbara), Sunyer, J. (Jordi), Nystad, W. (Wenche), Munthe-Kaas, M. C. (Monica C.), Raikkonen, K. (Katri), Oken, E. (Emily), Huang, R.-C. (Rae-Chi), Weiss, S. T. (Scott T.), Anto, J. M. (Josep Maria), Bousquet, J. (Jean), Kumar, A. (Ashish), Soderhall, C. (Cilla), Almqvist, C. (Catarina), Cardenas, A. (Andres), Gruzieva, O. (Olena), Xu, C.-J. (Cheng-Jian), Reese, S. E. (Sarah E.), Kere, J. (Juha), Brodin, P. (Petter), Solomon, O. (Olivia), Wielscher, M. (Matthias), Holland, N. (Nina), Ghantous, A. (Akram), Hivert, M.-F. (Marie-France), Felix, J. F. (Janine F.), Koppelman, G. H. (Gerard H.), London, S. J. (Stephanie J.), and Melen, E. (Erik)

Abstract

Background: Preterm birth and shorter duration of pregnancy are associated with increased morbidity in neonatal and later life. As the epigenome is known to have an important role during fetal development, we investigated associations between gestational age and blood DNA methylation in children. Methods: We performed meta-analysis of Illumina’s HumanMethylation450-array associations between gestational age and cord blood DNA methylation in 3648 newborns from 17 cohorts without common pregnancy complications, induced delivery or caesarean section. We also explored associations of gestational age with DNA methylation measured at 4–18 years in additional pediatric cohorts. Follow-up analyses of DNA methylation and gene expression correlations were performed in cord blood. DNA methylation profiles were also explored in tissues relevant for gestational age health effects: fetal brain and lung. Results: We identified 8899 CpGs in cord blood that were associated with gestational age (range 27–42 weeks), at Bonferroni significance, P < 1.06 × 10⁻⁷, of which 3343 were novel. These were annotated to 4966 genes. After restricting findings to at least three significant adjacent CpGs, we identified 1276 CpGs annotated to 325 genes. Results were generally consistent when analyses were restricted to term births. Cord blood findings tended not to persist into childhood and adolescence. Pathway analyses identified enrichment for biological processes critical to embryonic development. Follow-up of identified genes showed correlations between gestational age and DNA methylation levels in fetal brain and lung tissue, as well as correlation with expression levels. Conclusions: We identified numerous CpGs differentially methylated in relation to gestational age at birth that appear to reflect fetal developmental processes across tissues. These findings may contribute to understanding mechanisms linking gestational age to health effects.

Published
2020

44. Inflammatory Diseases of the Ureter

Author

Chemla, P., primary, Smayra, T., additional, Bouchard, L., additional, Mazerolles, M., additional, Otal, Ph., additional, Grenier, N., additional, and Joffre, F., additional

Published
2003
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45. Techniques of Ureteral Imaging

Author

Otal, Ph., primary, Claudon, M., additional, Joffre, F., additional, Soulie, M., additional, Bouchard, L., additional, Millan, M. I., additional, Bennaceur, M., additional, and Victor, G., additional

Published
2003
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47. Ureteral Tumors

Author

Plante, Ph., primary, Smayra, T., additional, Bouchard, L., additional, Joffre, F., additional, Seguin, P., additional, Escourrou, G., additional, and Otal, Ph., additional

Published
2003
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49. Miscellaneous

Author

Bouchard, L., primary, Rischmann, P., additional, Smayra, T., additional, Chemali, R., additional, Soulie, M., additional, Moussouni, S., additional, Otal, Ph., additional, and Joffre, F., additional

Published
2003
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50. Strategy for Ureteral Imaging

Author

Sarramon, J. P., primary, Joffre, F., additional, Janne d’Othee, B., additional, Bouchard, L., additional, Otal, Ph., additional, and Plante, P., additional

Published
2003
Full Text
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