Study of Body Mass Index and DNA Methylation in People with HIV
Author Information
Author(s): Abi Nanzha, Young Alexandra, Tiwari Pradeep, Chen Junyu, Liu Chang, Hui Qin, So-Armah Kaku, Freiberg Matthew S., Justice Amy C., Xu Ke, Gwinn Marta, Marconi Vincent C.
Primary Institution: Emory University
Hypothesis
This research explores the relationship between body mass index (BMI) and epigenetic patterns to better understand and manage obesity-related risks in people with HIV.
Conclusion
DNA methylation markers and a methylation risk score are significantly linked to BMI in people with HIV, suggesting shared and distinct molecular mechanisms with non-HIV populations.
Supporting Evidence
- Four epigenome-wide significant CpG sites were identified, indicating shared and unique BMI-related epigenetic markers between people with HIV and non-HIV individuals.
- The constructed BMI methylation risk score explained approximately 19% of the BMI variance in people with HIV.
- 70.3% of common BMI-associated CpG sites showed directional consistency with findings from a previous study in non-HIV populations.
Takeaway
This study looks at how weight and DNA changes are connected in people with HIV, helping us understand how to keep them healthier.
Methodology
An epigenome-wide association study (EWAS) was conducted on 892 African American male people with HIV, examining BMI associations with DNA methylation using linear mixed models.
Potential Biases
Potential bias due to the study's focus on a specific demographic (African American males) and the exclusion of women.
Limitations
The study was limited to male participants and may not represent the general population; also, it only included CpG sites common to both the 450 K and 850 K array platforms.
Participant Demographics
892 self-reported African American male participants with HIV.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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