A comprehensive lifestyle index and its associations with DNA methylation and type 2 diabetes among Ghanaian adults: the rodam study
Background: A series of modifiable lifestyle factors, such as diet quality, physical activity, alcohol intake, and smoking, may drive the rising burden of type 2 diabetes (T2DM) among sub‑Saharan Africans globally. It is unclear whether epigenetic changes play a mediatory role in the associations be...
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| Main Authors: | , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
16 October 2024
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| In: |
Clinical epigenetics
Year: 2024, Volume: 16, Pages: 1-16 |
| ISSN: | 1868-7083 |
| DOI: | 10.1186/s13148-024-01758-z |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1186/s13148-024-01758-z Verlag, kostenfrei, Volltext: https://clinicalepigeneticsjournal.biomedcentral.com/articles/10.1186/s13148-024-01758-z 
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| Author Notes: | C.A. Abidha, K.A.C. Meeks, F.P. Chilunga, A. Venema, R. Schindlmayr, C. Hayfron-Benjamin, Kerstin Klipstein-Grobusch, Frank P. Mockenhaupt, C. Agyemang, P. Henneman and I. Danquah |
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| 100 | 1 | |a Abidha, Carol Akinyi |e VerfasserIn |0 (DE-588)121605780X |0 (DE-627)1727151933 |4 aut | |
| 245 | 1 | 2 | |a A comprehensive lifestyle index and its associations with DNA methylation and type 2 diabetes among Ghanaian adults |b the rodam study |c C.A. Abidha, K.A.C. Meeks, F.P. Chilunga, A. Venema, R. Schindlmayr, C. Hayfron-Benjamin, Kerstin Klipstein-Grobusch, Frank P. Mockenhaupt, C. Agyemang, P. Henneman and I. Danquah |
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| 520 | |a Background: A series of modifiable lifestyle factors, such as diet quality, physical activity, alcohol intake, and smoking, may drive the rising burden of type 2 diabetes (T2DM) among sub‑Saharan Africans globally. It is unclear whether epigenetic changes play a mediatory role in the associations between these lifestyle factors and T2DM. We assessed the associations between a comprehensive lifestyle index, DNA methylation and T2DM among Ghanaian adults. Methods: We used whole‑blood Illumina 450 k DNA methylation data from 713 Ghanaians from the Research on Obesity and Diabetes among African Migrants (RODAM) study. We constructed a comprehensive lifestyle index based on established cut‑offs for diet quality, physical activity, alcohol intake, and smoking status. In the T2DM‑free discovery cohort (n = 457), linear models were fitted to identify differentially methylated positions (DMPs) and differentially methylated regions (DMRs) associated with the lifestyle index after adjustment for age, sex, body mass index (BMI), and technical covariates. Associations between the identified DMPs and the primary outcome (T2DM), as well as secondary outcomes (fasting blood glucose (FBG) and HbA1c), were determined via logistic and linear regression models, respectively. Results: In the present study population (mean age: 52 ± 10 years; male: 42.6%), the comprehensive lifestyle index showed a significant association with one DMP annotated to an intergenic region on chromosome 7 (false discovery rate (FDR) = 0.024). Others were annotated to ADCY7, SMARCE1, AHRR, LOXL2, and PTBP1 genes. One DMR was identified and annotated to the GFPT2 gene (familywise error rate (FWER) from bumphunter bootstrap = 0.036). None of the DMPs showed significant associations with T2DM; directions of effect were positive for the DMP in the AHRRand inverse for all the other DMPs. Higher methylation of the ADCY7 DMP was associated with higher FBG (p = 0.024); LOXL2 DMP was associated with lower FBG (p = 0.023) and HbA1c (p = 0.049); and PTBP1 DMP was associated with lower HbA1c (p = 0.002). Conclusions: In this explorative epigenome‑wide association study among Ghanaians, we identified one DMP and DMR associated with a comprehensive lifestyle index not previously associated with individual lifestyle factors. | ||
| 650 | 4 | |a Differentially methylated positions | |
| 650 | 4 | |a DNA methylation (DNAm) | |
| 650 | 4 | |a Genome-wide association | |
| 650 | 4 | |a Lifestyle index | |
| 650 | 4 | |a Type 2 diabetes | |
| 700 | 1 | |a Meeks, K. A. C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Chilunga, F. P. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Venema, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Schindlmayr, Rebecca |e VerfasserIn |0 (DE-588)1367727863 |0 (DE-627)1927439590 |4 aut | |
| 700 | 1 | |a Hayfron-Benjamin, C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Klipstein-Grobusch, Kerstin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Mockenhaupt, Frank P. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Agyemang, C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Henneman, P. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Danquah, Ina |d 1982- |e VerfasserIn |0 (DE-588)115451353X |0 (DE-627)101580618X |0 (DE-576)501055223 |4 aut | |
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