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Piga NN, Boua PR, Soremekun C, Shrine N, Coley K, Brandenburg JT, Tobin MD, Ramsay M, Fatumo S, Choudhury A, Batini C. Genetic insights into smoking behaviours in 10,558 men of African ancestry from continental Africa and the UK. Sci Rep 2022; 12:18828. [PMID: 36335192 PMCID: PMC9637114 DOI: 10.1038/s41598-022-22218-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 10/11/2022] [Indexed: 11/08/2022] Open
Abstract
Smoking is a leading risk factor for many of the top ten causes of death worldwide. Of the 1.3 billion smokers globally, 80% live in low- and middle-income countries, where the number of deaths due to tobacco use is expected to double in the next decade according to the World Health Organization. Genetic studies have helped to identify biological pathways for smoking behaviours, but have mostly focussed on individuals of European ancestry or living in either North America or Europe. We performed a genome-wide association study of two smoking behaviour traits in 10,558 men of African ancestry living in five African countries and the UK. Eight independent variants were associated with either smoking initiation or cessation at P-value < 5 × 10-6, four being monomorphic or rare in European populations. Gene prioritisation strategy highlighted five genes, including SEMA6D, previously described as associated with several smoking behaviour traits. These results confirm the importance of analysing underrepresented populations in genetic epidemiology, and the urgent need for larger genomic studies to boost discovery power to better understand smoking behaviours, as well as many other traits.
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Affiliation(s)
- Noemi-Nicole Piga
- Genetic Epidemiology Group, Department of Population Health Sciences, University of Leicester, Leicester, UK
| | - Palwende Romuald Boua
- Clinical Research Unit of Nanoro, Institut de Recherche en Sciences de La Santé, Nanoro, Burkina Faso
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Human Genetics, National Health Laboratory Service and School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Chisom Soremekun
- Department of Immunology and Molecular Biology, College of Health Science, Makerere University, Kampala, Uganda
- H3Africa Bioinformatics Network (H3ABioNet) Node, Center for Genomics Research and Innovation (CGRI), National Biotechnology Development Agency CGRI/NABDA, Abuja, Nigeria
- The African Computational Genomics (TACG) Research Group, MRC/UVRI LSHTM Uganda Research Unit, Entebbe, Uganda
| | - Nick Shrine
- Genetic Epidemiology Group, Department of Population Health Sciences, University of Leicester, Leicester, UK
| | - Kayesha Coley
- Genetic Epidemiology Group, Department of Population Health Sciences, University of Leicester, Leicester, UK
| | - Jean-Tristan Brandenburg
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Martin D Tobin
- Genetic Epidemiology Group, Department of Population Health Sciences, University of Leicester, Leicester, UK
- National Institute for Health Research Leicester Respiratory Biomedical Research Centre, Glenfield Hospital, Leicester, UK
| | - Michèle Ramsay
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Human Genetics, National Health Laboratory Service and School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Segun Fatumo
- H3Africa Bioinformatics Network (H3ABioNet) Node, Center for Genomics Research and Innovation (CGRI), National Biotechnology Development Agency CGRI/NABDA, Abuja, Nigeria
- The African Computational Genomics (TACG) Research Group, MRC/UVRI LSHTM Uganda Research Unit, Entebbe, Uganda
- Department of Non-Communicable Disease Epidemiology (NCDE), London School of Hygiene and Tropical Medicine, London, UK
| | - Ananyo Choudhury
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Chiara Batini
- Genetic Epidemiology Group, Department of Population Health Sciences, University of Leicester, Leicester, UK.
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Lin C, Colquitt L, Wise P, Breslin PAS, Rawson NE, Genovese F, Maina I, Joseph P, Fomuso L, Slade L, Brooks D, Miclo A, Hayes JE, Sullo A, Reed DR. Studies of human twins reveal genetic variation that affects dietary fat perception. Chem Senses 2020; 45:bjaa036. [PMID: 32516399 PMCID: PMC7339080 DOI: 10.1093/chemse/bjaa036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Indexed: 01/09/2023] Open
Abstract
To learn more about the mechanisms of human dietary fat perception, 398 human twins rated fattiness and liking for six types of potato chips that differed in triglyceride content (2.5, 5, 10, and 15% corn oil); reliability estimates were obtained from a subset (n = 50) who did the task twice. Some chips also had a saturated long-chain fatty acid (hexadecanoic acid, 16:0) added (0.2%) to evaluate its effect on fattiness and liking. We computed the heritability of these measures and conducted a genome-wide association study (GWAS) to identify regions of the genome that co-segregate with fattiness and liking. Perceived fattiness and liking for the potato chips were reliable (r = 0.31-0.62, p < 0.05) and heritable (up to h2 = 0.29, p < 0.001, for liking). Adding hexadecanoic acid to the potato chips significantly increased ratings of fattiness but decreased liking. Twins with the G allele of rs263429 near GATA3-AS1 or the G allele of rs8103990 within ZNF729 reported more liking for potato chips than did twins with the other allele (multivariate GWAS, p < 1×10-5), with results reaching genome-wide suggestive but not significance criteria. Person-to-person variation in the perception and liking of dietary fat was (a) negatively affected by the addition of a saturated fatty acid and (b) related to inborn genetic variants. These data suggest liking for dietary fat is not due solely to fatty acid content and highlight new candidate genes and proteins within this sensory pathway.
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Affiliation(s)
- Cailu Lin
- Monell Chemical Senses Center, Philadelphia, PA, USA
| | | | - Paul Wise
- Monell Chemical Senses Center, Philadelphia, PA, USA
| | | | | | | | - Ivy Maina
- Monell Chemical Senses Center, Philadelphia, PA, USA
| | - Paule Joseph
- Sensory Science and Metabolism Unit, Biobehavioral Branch, Division of Intramural Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, USA
| | | | - Louise Slade
- Food Polymer Science Consultancy, Morris Plains, NJ, USA
| | | | - Aurélie Miclo
- Monell Chemical Senses Center, Philadelphia, PA, USA
| | - John E Hayes
- Sensory Evaluation Center, and Department of Food Science, College of Agricultural Sciences, Pennsylvania State University, University Park, PA, USA
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