@article {1308, title = {Total zinc intake may modify the glucose-raising effect of a zinc transporter (SLC30A8) variant: a 14-cohort meta-analysis.}, journal = {Diabetes}, volume = {60}, year = {2011}, month = {2011 Sep}, pages = {2407-16}, abstract = {

OBJECTIVE: Many genetic variants have been associated with glucose homeostasis and type 2 diabetes in genome-wide association studies. Zinc is an essential micronutrient that is important for β-cell function and glucose homeostasis. We tested the hypothesis that zinc intake could influence the glucose-raising effect of specific variants.

RESEARCH DESIGN AND METHODS: We conducted a 14-cohort meta-analysis to assess the interaction of 20 genetic variants known to be related to glycemic traits and zinc metabolism with dietary zinc intake (food sources) and a 5-cohort meta-analysis to assess the interaction with total zinc intake (food sources and supplements) on fasting glucose levels among individuals of European ancestry without diabetes.

RESULTS: We observed a significant association of total zinc intake with lower fasting glucose levels (β-coefficient {\textpm} SE per 1 mg/day of zinc intake: -0.0012 {\textpm} 0.0003 mmol/L, summary P value = 0.0003), while the association of dietary zinc intake was not significant. We identified a nominally significant interaction between total zinc intake and the SLC30A8 rs11558471 variant on fasting glucose levels (β-coefficient {\textpm} SE per A allele for 1 mg/day of greater total zinc intake: -0.0017 {\textpm} 0.0006 mmol/L, summary interaction P value = 0.005); this result suggests a stronger inverse association between total zinc intake and fasting glucose in individuals carrying the glucose-raising A allele compared with individuals who do not carry it. None of the other interaction tests were statistically significant.

CONCLUSIONS: Our results suggest that higher total zinc intake may attenuate the glucose-raising effect of the rs11558471 SLC30A8 (zinc transporter) variant. Our findings also support evidence for the association of higher total zinc intake with lower fasting glucose levels.

}, keywords = {Blood Glucose, Cation Transport Proteins, Cohort Studies, Humans, Polymorphism, Single Nucleotide, Zinc, Zinc Transporter 8}, issn = {1939-327X}, doi = {10.2337/db11-0176}, author = {Kanoni, Stavroula and Nettleton, Jennifer A and Hivert, Marie-France and Ye, Zheng and van Rooij, Frank J A and Shungin, Dmitry and Sonestedt, Emily and Ngwa, Julius S and Wojczynski, Mary K and Lemaitre, Rozenn N and Gustafsson, Stefan and Anderson, Jennifer S and Tanaka, Toshiko and Hindy, George and Saylor, Georgia and Renstrom, Frida and Bennett, Amanda J and van Duijn, Cornelia M and Florez, Jose C and Fox, Caroline S and Hofman, Albert and Hoogeveen, Ron C and Houston, Denise K and Hu, Frank B and Jacques, Paul F and Johansson, Ingegerd and Lind, Lars and Liu, Yongmei and McKeown, Nicola and Ordovas, Jose and Pankow, James S and Sijbrands, Eric J G and Syv{\"a}nen, Ann-Christine and Uitterlinden, Andr{\'e} G and Yannakoulia, Mary and Zillikens, M Carola and Wareham, Nick J and Prokopenko, Inga and Bandinelli, Stefania and Forouhi, Nita G and Cupples, L Adrienne and Loos, Ruth J and Hallmans, G{\"o}ran and Dupuis, Jos{\'e}e and Langenberg, Claudia and Ferrucci, Luigi and Kritchevsky, Stephen B and McCarthy, Mark I and Ingelsson, Erik and Borecki, Ingrid B and Witteman, Jacqueline C M and Orho-Melander, Marju and Siscovick, David S and Meigs, James B and Franks, Paul W and Dedoussis, George V} } @article {6368, title = {Gene-centric meta-analyses for central adiposity traits in up to 57 412 individuals of European descent confirm known loci and reveal several novel associations.}, journal = {Hum Mol Genet}, volume = {23}, year = {2014}, month = {2014 May 01}, pages = {2498-510}, abstract = {

Waist circumference (WC) and waist-to-hip ratio (WHR) are surrogate measures of central adiposity that are associated with adverse cardiovascular events, type 2 diabetes and cancer independent of body mass index (BMI). WC and WHR are highly heritable with multiple susceptibility loci identified to date. We assessed the association between SNPs and BMI-adjusted WC and WHR and unadjusted WC in up to 57 412 individuals of European descent from 22 cohorts collaborating with the NHLBI{\textquoteright}s Candidate Gene Association Resource (CARe) project. The study population consisted of women and men aged 20-80 years. Study participants were genotyped using the ITMAT/Broad/CARE array, which includes \~{}50 000 cosmopolitan tagged SNPs across \~{}2100 cardiovascular-related genes. Each trait was modeled as a function of age, study site and principal components to control for population stratification, and we conducted a fixed-effects meta-analysis. No new loci for WC were observed. For WHR analyses, three novel loci were significantly associated (P < 2.4 {\texttimes} 10(-6)). Previously unreported rs2811337-G near TMCC1 was associated with increased WHR (β {\textpm} SE, 0.048 {\textpm} 0.008, P = 7.7 {\texttimes} 10(-9)) as was rs7302703-G in HOXC10 (β = 0.044 {\textpm} 0.008, P = 2.9 {\texttimes} 10(-7)) and rs936108-C in PEMT (β = 0.035 {\textpm} 0.007, P = 1.9 {\texttimes} 10(-6)). Sex-stratified analyses revealed two additional novel signals among females only, rs12076073-A in SHC1 (β = 0.10 {\textpm} 0.02, P = 1.9 {\texttimes} 10(-6)) and rs1037575-A in ATBDB4 (β = 0.046 {\textpm} 0.01, P = 2.2 {\texttimes} 10(-6)), supporting an already established sexual dimorphism of central adiposity-related genetic variants. Functional analysis using ENCODE and eQTL databases revealed that several of these loci are in regulatory regions or regions with differential expression in adipose tissue.

}, keywords = {Adiposity, Adult, Aged, Aged, 80 and over, Body Mass Index, European Continental Ancestry Group, Female, Genome-Wide Association Study, Humans, Male, Middle Aged, Waist Circumference, Waist-Hip Ratio, Young Adult}, issn = {1460-2083}, doi = {10.1093/hmg/ddt626}, author = {Yoneyama, Sachiko and Guo, Yiran and Lanktree, Matthew B and Barnes, Michael R and Elbers, Clara C and Karczewski, Konrad J and Padmanabhan, Sandosh and Bauer, Florianne and Baumert, Jens and Beitelshees, Amber and Berenson, Gerald S and Boer, Jolanda M A and Burke, Gregory and Cade, Brian and Chen, Wei and Cooper-Dehoff, Rhonda M and Gaunt, Tom R and Gieger, Christian and Gong, Yan and Gorski, Mathias and Heard-Costa, Nancy and Johnson, Toby and Lamonte, Michael J and McDonough, Caitrin and Monda, Keri L and Onland-Moret, N Charlotte and Nelson, Christopher P and O{\textquoteright}Connell, Jeffrey R and Ordovas, Jose and Peter, Inga and Peters, Annette and Shaffer, Jonathan and Shen, Haiqinq and Smith, Erin and Speilotes, Liz and Thomas, Fridtjof and Thorand, Barbara and Monique Verschuren, W M and Anand, Sonia S and Dominiczak, Anna and Davidson, Karina W and Hegele, Robert A and Heid, Iris and Hofker, Marten H and Huggins, Gordon S and Illig, Thomas and Johnson, Julie A and Kirkland, Susan and K{\"o}nig, Wolfgang and Langaee, Taimour Y and McCaffery, Jeanne and Melander, Olle and Mitchell, Braxton D and Munroe, Patricia and Murray, Sarah S and Papanicolaou, George and Redline, Susan and Reilly, Muredach and Samani, Nilesh J and Schork, Nicholas J and van der Schouw, Yvonne T and Shimbo, Daichi and Shuldiner, Alan R and Tobin, Martin D and Wijmenga, Cisca and Yusuf, Salim and Hakonarson, Hakon and Lange, Leslie A and Demerath, Ellen W and Fox, Caroline S and North, Kari E and Reiner, Alex P and Keating, Brendan and Taylor, Kira C} }