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ABSTRACT: High burden of Clonal Hematopoiesis in First Responders Exposed to the World Trade Center Disaster

PROVIDER: PRJEB49193 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	HGV_analysis_control_merged.vcf.gz	Vcf
	HGV_analysis_control_merged.vcf.gz.tbi	Vcf
	HGV_analysis_affected_merged.vcf.gz	Vcf
	HGV_analysis_affected_merged.vcf.gz.tbi	Vcf

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High burden of Clonal Hematopoiesis in First Responders Exposed to the World Trade Center Disaster

Project description:High burden of Clonal Hematopoiesis in First Responders Exposed to the World Trade Center Disaster

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Project description:Gene expression has provided promising insights into the pathophysiology of posttraumatic stress disorder (PTSD), but specific regulatory transcriptomic mechanisms remain unknown. The current study addressed this limitation by analyzing transcriptome-wide RNA-Seq of whole blood samples from N=226 World Trade Center responders. The investigation focused on differential expression (DE) at gene, isoform, and alternative splicing (AS) levels associated with Posttraumatic Stress Disorder symptoms: total burden and its re-experiencing, avoidance, numbing, and hyperarousal subdimensions; and is the first study to characterize the AS landscape in PTSD. These dimensions were associated with 76, 1, 48, 15, and 49 genes, respectively (FDR<0.05). Similarly, they were associated with 103, 11, 0, 43, and 32 AS events. Avoidance differed the most from other dimensions with regard to DE genes, isoforms and AS correlates. Gene set enrichment analysis (GSEA) identified pathways involved in inflammatory and metabolic processes, which may have implications for the treatment of PTSD. Overall, findings shed a novel light on the wide range of transcriptomic alterations associated with PTSD at gene and AS levels. The DE analysis associated with PTSD subdimensions highlights the importance of studying PTSD symptom heterogeneity.

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Project description:Particulate matter (PM) exposure and metabolic syndrome (MetSyn) coexist in both industrialized and developing nations. PM and MetSyn are strong risk factors for chronic obstructive pulmonary disease (COPD) and asthma. After the World Trade Center collapse in 9/11/2001, PM-exposed individuals from the Fire Department of New York City (FDNY) developed a progressively lung disease. This nested case-cohort study is composed of never smoking, WTC exposed firefighters with normal pre-9/11 lung function presenting for subspecialty pulmonary evaluation (SPE) before March 2008. Representative cohort controls with serum drawn within six months of 9/11 (n=100). FEV1 at subspecialty exam defined cases: susceptible World Trade Center Lung Injury (WTC-LI) cases (n=50) had FEV1< lower limit of normal (LLN) and resistant WTC-LI cases with FEV1 ≥107% predicted (n=50). This study will determine the metabolomics profile that differentiates firefighters with WTC-LI, firefighters resistant to WTC-LI, and similarly exposed cohort controls.

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