9 research outputs found
Night Awakening and Its Association With Executive Functioning Across the First Two Years of Life
Night Awakening in Infancy: Developmental Stability and Longitudinal Associations With Psychomotor Development
Exposure to electronic media was negatively associated with speech and language development at 18 and 24 months
Signaled night awakening and its association with social information processing and socio-emotional development across the first two years
Respiratory sinus arrhythmia moderates the impact of maternal prenatal anxiety on infant negative affectivity
Tailoring implementation strategies for evidence-based recommendations using computerised clinical decision support systems: protocol for the development of the GUIDES tools
Genetic architecture of human plasma lipidome and its link to cardiovascular disease
Abstract
Understanding genetic architecture of plasma lipidome could provide better insights into lipid metabolism and its link to cardiovascular diseases (CVDs). Here, we perform genome-wide association analyses of 141 lipid species (n = 2,181 individuals), followed by phenome-wide scans with 25 CVD related phenotypes (n = 511,700 individuals). We identify 35 lipid-species-associated loci (P <5 ×10−8), 10 of which associate with CVD risk including five new loci-COL5A1, GLTPD2, SPTLC3, MBOAT7 and GALNT16 (false discovery rate<0.05). We identify loci for lipid species that are shown to predict CVD e.g., SPTLC3 for CER(d18:1/24:1). We show that lipoprotein lipase (LPL) may more efficiently hydrolyze medium length triacylglycerides (TAGs) than others. Polyunsaturated lipids have highest heritability and genetic correlations, suggesting considerable genetic regulation at fatty acids levels. We find low genetic correlations between traditional lipids and lipid species. Our results show that lipidomic profiles capture information beyond traditional lipids and identify genetic variants modifying lipid levels and risk of CVD
A Large-Scale, Consortium-Based Genomewide Association Study of Asthma
BACKGROUND
Susceptibility to asthma is influenced by genes and environment;
implicated genes may indicate pathways for therapeutic intervention.
Genetic risk factors may be useful in identifying subtypes of asthma and
determining whether intermediate phenotypes, such as elevation of the
total serum IgE level, are causally linked to disease.
METHODS
We carried out a genomewide association study by genotyping 10,365
persons with physician-diagnosed asthma and 16,110 unaffected persons,
all of whom were matched for ancestry. We used random-effects pooled
analysis to test for association in the overall study population and in
subgroups of subjects with childhood-onset asthma (defined as asthma
developing before 16 years of age), later-onset asthma, severe asthma,
and occupational asthma.
RESULTS
We observed associations of genomewide significance between asthma and
the following single-nucleotide polymorphisms: rs3771166 on chromosome
2, implicating IL1RL1/IL18R1 (P = 3x10(-9)); rs9273349 on chromosome 6,
implicating HLA-DQ (P = 7x10(-14)); rs1342326 on chromosome 9, flanking
IL33 (P = 9x10(-10)); rs744910 on chromosome 15 in SMAD3 (P = 4x10(-9));
and rs2284033 on chromosome 22 in IL2RB (P = 1.1x10(-8)). Association
with the ORMDL3/GSDMB locus on chromosome 17q21 was specific to
childhood-onset disease (rs2305480, P = 6x10(-23)). Only HLA-DR showed a
significant genomewide association with the total serum IgE
concentration, and loci strongly associated with IgE levels were not
associated with asthma.
CONCLUSIONS
Asthma is genetically heterogeneous. A few common alleles are associated
with disease risk at all ages. Implicated genes suggest a role for
communication of epithelial damage to the adaptive immune system and
activation of airway inflammation. Variants at the ORMDL3/GSDMB locus
are associated only with childhood-onset disease. Elevation of total
serum IgE levels has a minor role in the development of asthma