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Updated: Jul 5, 2026
Tissue-specific miRNA Expression Profiling in Mouse Heart Sections Using In Situ Hybridization
Published on: September 15, 2018
Screening and identification of differentially expressed genes in myocardial ischaemia/reperfusion injury using
Yan-Wei Liu1, Shui-Ping Liu, Jian-Ding Cheng
1Department of Forensic Pathology, ZhongShan School of Medicine, Sun Yat-sen University, China.
Objective:
Myocardial ischaemia/reperfusion (MI/R) injury is characterized by metabolic and ultrastructural changes, which lead to irreversible injury. Several mechanisms have been postulated for the pathogenesis of MI/R injury although little is known regarding the role of myocardial gene expression.
Methods And Results:
In this study, suppression subtractive hybridization (SSH) was employed to systematically isolate and screen the differentially expressed genes in the MI/R injury rat model. The characteristics of these specific genes were analysed using bioinformatics. Our results showed that among the 119 identified genes, 54 genes were expressed at higher levels and 65 genes were at lower levels compared with the control group.
Conclusions:
These genes are closely associated with energy metabolism, iron transport, signalling transduction and may provide important clues for the elucidation of the mechanisms of MI/R injury. Our results further indicated that myocardial injury is likely the result of summation of functional impairment of multiple genes rather than the result of damage to a single critical gene.
Insights
This study investigated gene expression changes in myocardial ischaemia/reperfusion (MI/R) injury. Researchers identified 119 differentially expressed genes, suggesting MI/R injury results from multiple gene functional impairments.
Area of Science:
- Cardiovascular Biology
- Molecular Genetics
- Pathophysiology
Background:
- Myocardial ischaemia/reperfusion (MI/R) injury involves metabolic and ultrastructural changes leading to irreversible damage.
- The precise mechanisms of MI/R injury pathogenesis are not fully understood, particularly the role of myocardial gene expression.
Purpose of the Study:
- To systematically identify and screen genes differentially expressed in a rat model of MI/R injury.
- To analyze the characteristics of these identified genes using bioinformatics.
Main Methods:
- Suppression subtractive hybridization (SSH) was utilized to isolate differentially expressed genes.
- Bioinformatic analysis was performed on the identified genes.
Main Results:
- 119 genes were identified as differentially expressed in the MI/R injury model.
- Of these, 54 genes showed higher expression and 65 genes showed lower expression compared to the control group.
Conclusions:
- The identified genes are linked to energy metabolism, iron transport, and signal transduction pathways.
- These findings suggest that myocardial injury arises from the cumulative functional impairment of multiple genes, not a single critical gene.