TY  - JOUR
A1  - Beaumont, Robin N.
A1  - Warrington, Nicole M.
A1  - Cavadino, Alana
A1  - Tyrrell, Jessica
A1  - Nodzenski, Michael
A1  - Horikoshi, Momoko
A1  - Geller, Frank
A1  - Myhre, Ronny
A1  - Richmond, Rebecca C.
A1  - Paternoster, Lavinia
A1  - Bradfield, Jonathan P.
A1  - Kreiner-Moller, Eskil
A1  - Huikari, Ville
A1  - Metrustry, Sarah
A1  - Lunetta, Kathryn L.
A1  - Painter, Jodie N.
A1  - Hottenga, Jouke-Jan
A1  - Allard, Catherine
A1  - Barton, Sheila J.
A1  - Espinosa, Ana
A1  - Marsh, Julie A.
A1  - Potter, Catherine
A1  - Zhang, Ge
A1  - Ang, Wei
A1  - Berry, Diane J.
A1  - Bouchard, Luigi
A1  - Das, Shikta
A1  - Hakonarson, Hakon
A1  - Heikkinen, Jani
A1  - Helgeland, Oyvind
A1  - Hocher, Berthold
A1  - Hofman, Albert
A1  - Inskip, Hazel M.
A1  - Jones, Samuel E.
A1  - Kogevinas, Manolis
A1  - Lind, Penelope A.
A1  - Marullo, Letizia
A1  - Medland, Sarah E.
A1  - Murray, Anna
A1  - Murray, Jeffrey C.
A1  - Njolstad, Pal R.
A1  - Nohr, Ellen A.
A1  - Reichetzeder, Christoph
A1  - Ring, Susan M.
A1  - Ruth, Katherine S.
A1  - Santa-Marina, Loreto
A1  - Scholtens, Denise M.
A1  - Sebert, Sylvain
A1  - Sengpiel, Verena
A1  - Tuke, Marcus A.
A1  - Vaudel, Marc
A1  - Weedon, Michael N.
A1  - Willemsen, Gonneke
A1  - Wood, Andrew R.
A1  - Yaghootkar, Hanieh
A1  - Muglia, Louis J.
A1  - Bartels, Meike
A1  - Relton, Caroline L.
A1  - Pennell, Craig E.
A1  - Chatzi, Leda
A1  - Estivill, Xavier
A1  - Holloway, John W.
A1  - Boomsma, Dorret I.
A1  - Montgomery, Grant W.
A1  - Murabito, Joanne M.
A1  - Spector, Tim D.
A1  - Power, Christine
A1  - Jarvelin, Marjo-Ritta
A1  - Bisgaard, Hans
A1  - Grant, Struan F. A.
A1  - Sorensen, Thorkild I. A.
A1  - Jaddoe, Vincent W.
A1  - Jacobsson, Bo
A1  - Melbye, Mads
A1  - McCarthy, Mark I.
A1  - Hattersley, Andrew T.
A1  - Hayes, M. Geoffrey
A1  - Frayling, Timothy M.
A1  - Hivert, Marie-France
A1  - Felix, Janine F.
A1  - Hypponen, Elina
A1  - Lowe, William L.
A1  - Evans, David M.
A1  - Lawlor, Debbie A.
A1  - Feenstra, Bjarke
A1  - Freathy, Rachel M.
T1  - Genome-wide association study of offspring birth weight in 86 577 women identifies five novel loci and highlights maternal genetic effects that are independent of fetal genetics
JF  - Human molecular genetics
N2  - Genome-wide association studies of birth weight have focused on fetal genetics, whereas relatively little is known about the role of maternal genetic variation. We aimed to identify maternal genetic variants associated with birth weight that could highlight potentially relevant maternal determinants of fetal growth. We meta-analysed data on up to 8.7 million SNPs in up to 86 577 women of European descent from the Early Growth Genetics (EGG) Consortium and the UK Biobank. We used structural equation modelling (SEM) and analyses of mother-child pairs to quantify the separate maternal and fetal genetic effects. Maternal SNPs at 10 loci (MTNR1B, HMGA2, SH2B3, KCNAB1, L3MBTL3, GCK, EBF1, TCF7L2, ACTL9, CYP3A7) were associated with offspring birth weight at P< 5 x 10(-8). In SEM analyses, at least 7 of the 10 associations were consistent with effects of the maternal genotype acting via the intrauterine environment, rather than via effects of shared alleles with the fetus. Variants, or correlated proxies, at many of the loci had been previously associated with adult traits, including fasting glucose (MTNR1B, GCK and TCF7L2) and sex hormone levels (CYP3A7), and one (EBF1) with gestational duration. The identified associations indicate that genetic effects on maternal glucose, cytochrome P450 activity and gestational duration, and potentially on maternal blood pressure and immune function, are relevant for fetal growth. Further characterization of these associations in mechanistic and causal analyses will enhance understanding of the potentially modifiable maternal determinants of fetal growth, with the goal of reducing the morbidity and mortality associated with low and high birth weights.
Y1  - 2018
U6  - https://doi.org/10.1093/hmg/ddx429
SN  - 0964-6906
SN  - 1460-2083
VL  - 27
IS  - 4
SP  - 742
EP  - 756
PB  - Oxford Univ. Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Wood, C. C.
A1  - Poree, Fabien
A1  - Dreyer, Ingo
A1  - Koehler, G. J.
A1  - Udvardi, M. K.
T1  - Mechanisms of ammonium transport, accumulation, and retention in ooyctes and yeast cells expressing Arabidopsis AtAMT1; 1
N2  - Ammonium is a primary source of N for plants, so knowing how it is transported, stored, and assimilated in plant cells is important for rational approaches to optimise N-use in agriculture. Electrophysiological studies of Arabidopsis AtAMT1;1 expressed in oocytes revealed passive, Delta psi-driven transport of NH4+ through this protein. Expression of AtAMT1;1 in a novel yeast mutant defective in endogenous ammonium transport and vacuolar acidification supported the above mechanism for AtAMT1;1 and revealed a central role for acid vacuoles in storage and retention of ammonia in cells. These results highlight the mechanistic differences between plant AMT proteins and related transporters in bacteria and animal cells, and suggest novel strategies to enhance nitrogen use efficiency in agriculture. (c) 2006 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved
Y1  - 2006
UR  - http://www.sciencedirect.com/science/article/pii/S0014579306007332
U6  - https://doi.org/10.1016/j.febslet.2006.06.026
ER  -