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Cardiac DNA Methylation Underlies Racial and Socioeconomic Disparities among Patients with End-Stage Heart Failure (RNA-seq)

ABSTRACT: Cardiac DNA Methylation Underlies Racial and Socioeconomic Disparities among Patients with End-Stage Heart Failure (RNA-seq)

PROVIDER: PRJNA689544 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13348000_1.fastq.gz	Fastqsanger.gz
	SRR13348000_2.fastq.gz	Fastqsanger.gz
	SRR13348001_1.fastq.gz	Fastqsanger.gz
	SRR13348001_2.fastq.gz	Fastqsanger.gz
	SRR13348002_1.fastq.gz	Fastqsanger.gz

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Cardiac DNA Methylation Underlies Racial and Socioeconomic Disparities among Patients with End-Stage Heart Failure (MethylationEPIC array)

Project description:Cardiac DNA Methylation Underlies Racial and Socioeconomic Disparities among Patients with End-Stage Heart Failure (MethylationEPIC array)

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Cardiac DNA Methylation Underlies Racial and Socioeconomic Disparities among Patients with End-Stage Heart Failure (RNA-seq)

Project description:African Americans (AA) are 70% more likely than Caucasian Americans (CA) to die from heart failure (HF) even after adjusting for known causes. Although the causal factors responsible for this racial disparity remain unknown, it is theorized that environmental stressors This alarming health disparity represents an important challenge to U.S. healthcare as global prevalence of heart failure has already exceeded epidemic levels with a disease burden that disproportionately impacts members of ethnic and racial minorities. The current multicohort study of cardiac DNA methylation identifies the cardiac epigenome as a previously unrecognized syntax that encodes race-based environmental differences in the failing human heart.

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Project description:Here, we present the first study showing race and side-specific differences in the trajectories of epigenetic aging in normal colonic mucosa. The cohort conisted of matched biopsies of left/right colon from healthy individuals (n=129). The majority of individuals were African American (n=89). Methylation arrays (Illumina EPIC) were performed on DNA extracted from fresh frozen biopsies taken at the time of colonoscopy. Our results provide novel insight of epigenetic aging underlying racial disparities in CRC. Side-specific colonic epigenetic aging may be a promising marker to guide interventions to reduce CRC burden.

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Racial and Socioeconomic Disparity Associates with Differences in Cardiac DNA Methylation among Men with End-Stage Heart Failure

Project description:Racial and Socioeconomic Disparity Associates with Differences in Cardiac DNA Methylation among Men with End-Stage Heart Failure

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Racial and Socioeconomic Disparity Associates with Differences in Cardiac DNA Methylation among Men with End-Stage Heart Failure

Project description:Heart Failure (HF) is a multifactorial syndrome and that remains a leading cause of worldwide morbidity. Despite its high prevalence, only half 50% of HF patients respond to guideline-directed medical management, prompting therapeutic efforts . Therapeutic avenues are forced to confront the molecular underpinnings of its heterogeneity of HF as a clinical syndrome to identify novel molecular targets. In both pilot (n = 11) and testing (n = 31) cohorts (n = 31), unsupervised multidimensional scaling of genome-wide myocardial DNA methylation exhibited a bimodal distribution of CpG methylation found largely to occur in the promoter regions of metabolic genes.. Among the available patient attributes, only categorical patient race could delineate this methylation signature, with African American (AA) and Caucasian American (CA) samples clustering separately. Because race is a social construct, and thus a poor proxy of human physiology, extensive review of medical records was conducted, but ultimately failed to identify co-variates of race at the time of LVAD surgery. By contrast, retrospective analysis exposed a higher all-cause mortality among AA (56.3%) relative to CA (16.7%) patients at 2 years following LVAD placement (P = 0.03). .G To mitigate concerns of genetic confounding factors, putative single-nucleotide polymorphisms (SNPs) were identified by proximity to CpG methylation sites. Nevertheless, a minor proportion of SNPs (0.15%) was identified, and no evidence of racial dissimilarity was seen among them. By contrast, geocoding-based approximation of patient demographics uncovered disparities in income levels among AA relative to CA patients. Therefore, Although although additional studies studies are warrantedneeded, our multicohort studythe current analysis implicates identifies cardiac DNA methylation as as a previously unrecognized indicator of socioeconomic disparity in human heart failure outcomes.

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