Genetics of Ischemic Cardiomyopathy

Cairo University26 enrolled

Overview

Background:Ischemic heart disease is one of the heaviest health-related burdens worldwide.We aimed to identify the common hub mRNA and pathways that are involved in pathological progression of ischemic cardiomyopathy. Methods: To explore potential differentially expressed genes (DEGs) of all ischemic heart disease stages, we used chipster and GEO2R tools to analyze of retrieved eight high throughput RNA datasets obtained from GEO database. Gene Ontology functional annotation and Pathways enrichment analyses were used to obtain the common functional enriched DEGs which were visualized in protein-protein interactions (PPI) network to explore the hub mRNA according to the interaction scores. Validation qRT-PCR was carried out for blood and cardiac biopsies compared with controls to validate the determined four hub mRNAs and subsequently reviewed inside comprehensive published meta-analysis database. The validated mRNAs were visualized in two interaction modules. Finally screening of approved drugs was applied.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Ischemic Cardiomyopathy

Interventions

quantitative polymerase chain reaction(QPCR) for four genes

Cardiac biopsy, blood samplingPROCEDURE

In the studied thirteen peripheral blood subjects, five milliliters blood samples were taken from each patient in potassium EDTA tubes, immediately inserted in liquid nitrogen container and then stored in -80 refrigerators. All studied thirteen cardiac tissue subjects were underwent cardiac biopsy after PCI in order to take two specimens from the left ventricle using judkin right seven french catheters for femoral access and cardiac bioptome 2.3 mm wide. All cardiac specimens were collected in cryotubes, immediately inserted in liquid nitrogen container and then stored in -80 refrigerators.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 80 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion criteria The enrolled patients aged 20-80 years with stable coronary artery disease undergoing elective PCI or patients with unstable angina or myocardial infarction undergoing rescue PCI and admitted to the cardiology hospital (Asyut University, Asyut, Egypt) were recruited in this study. Exclusion criteria Patients with dilated cardiomyopathy were execluded from this study.

Outcomes

Primary Outcomes

Genetic pathway of pathological progression from stable coronary artery disease to myocardial infarction and finally to ischaemic cardiomyopathy

The expected results may explain novel genetic pathways of the clinical progression of asymptomatic structural cardiac disorder (Stable coronary artery disease) to typically symptomatic ischaemic cardiomyopathy. Gene expression profiling of seven genes in RNA of all cardiac specimens was measured using QPCR analysis.

Time frame: 2 years