Transcriptional activity of gene encoding subunits R1 and R2 of interferon gamma receptor in peripheral blood mononuclear cells in patients with slow coronary flow

• Main Authors: Faramarz-Gaznagh Sanaz, Rasmi Yousef, Khadem-Ansari Mohammad-Hasan, Seyed-Mohammadzad Mir-Hossein, Bagheri Morteza, Nemati Mohadeseh, Shirpoor Alireza, Ehsan Saboori
• Format: Article
• Language: English
• Published: Society of Medical Biochemists of Serbia, Belgrade 2016-01-01
• Series: Journal of Medical Biochemistry
• Subjects: slow coronary flow; interferon gamma receptor; gene expression; inflammation; coronary artery disease
• Online Access: https://scindeks-clanci.ceon.rs/data/pdf/1452-8258/2016/1452-82581602144F.pdf
• ISSN: 1452-8258; 1452-8266

Background: Slow coronary flow (SCF) is a coronary artery disorder characterized with delayed opacification of epicar-dial coronary arteries without obstructive coronary disease. The pathophysiological mechanisms of SCF remain unclear. One of the possible mechanisms that may participate in the pathology of SCF is endothelial dysfunction related to the inflammatory process. Interferon gamma (IFN-g) is an inflammatory cytokine that acts through its specific receptor composed of two subunits, IFN-gR1 and IFN-gR2. Transcriptional activity of the gene encoding these subunits influences IFN-g activity. This study aimed to investigate the gene expression of IFN-g receptor subunits in peripheral blood mononuclear cells (PBMC) from patients with SCF M ethods: The study was performed with 30 patients (22 male/8 female) aged 35 -76 (52.8 ± 11.7 years) with SCF and 15 sex-(11 male/4 female), Body Max Index (BMI)-and age-matched (54.73 ± 9.42 years) healthy subjects. Total m RNA was extracted from PBMC and was determined by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). The relative expression values (2-DDCt) between control and case groups were determined and the Mann-Whitney U test was used for statistical analysis. Results: There was a significant increase in the gene expression of IFN-gR1 in PBMC from SCF patients vs. controis (P< 0.0001); but the differences in IFN-yR2 gene expression were statistically insignificant between patient and control groups (P= 0.853). Conclusions: It can be concluded that IFN-yR1 gene expression may influence the function of microvasculature and thereby contribute to the pathophysiology of SCF.