en بیوشیمی Biochemistry مقالات اصلی Original Article <div style="text-align: justify;"><strong>Background</strong>: Systemic lupus erythematosus (SLE) is an autoimmune disease with inflammatory nature. One of the leading causes of death in SLE patients is cardiovascular (CVS) morbidity. MiRNA-24 is highly expressed in vascular endothelial cells (VECs). This dysregulated expression pattern is associated with dysfunction or even damage of VECs and leads to the occurrence of cardiovascular diseases. YKL- 40 is an inflammatory glycoprotein involved in the pathogenesis of endothelial dysfunction and thereby atherosclerosis. In this work, we aimed at illustrating the possible role of miR-24 and its target YKL-40 in the pathogenesis of the CVS morbidity associated with SLE.<br> <br> <strong>Methods</strong>: This work was conducted on 40 SLE patients and 40 healthy controls. Quantitative realtime PCR (qPCR) was done to estimate the expression level of miRNA-24 in serum. In addition, we measured the serum level of YKL-40 using ELISA.<br> <br> <strong>Results</strong>: miR-24-fold change was found to be down-regulated, whereas serum YKL- 40 was upregulated among SLE patients with observed significant and negative correlation between the two parameters.<br> <br> <strong>Conclusions</strong>: Our study provided an insight about the role of miR-24 and its target serum YKL-40 protein in the development of SLE-related inflammation and atherosclerosis.</div> miRNA-24, SDC-1, SLE, VCAM, YKL-40. 511 523 http://rbmb.net/browse.php?a_code=A-10-883-1&slc_lang=en&sid=1 Maha Alhelf 100319475328460016760 100319475328460016760 No Biotechnology School, Nile University, Giza, Egypt. Laila Rashed 100319475328460016761 100319475328460016761 No Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Cairo University,Cairo, Egypt. Sahar Ahmed 100319475328460016762 100319475328460016762 No Rheumatologyand Immunology Unit, Internal Medicine Department, Faculty ofMedicine, Cairo University, Cairo, Egypt. Mohamed Mohamed 100319475328460016763 100319475328460016763 No Endocrinology Unit, Internal Medicine Department, Faculty of Medicine, Cairo University, Cairo, Egypt. Marwa Abdelgwad Marwa.Soliman@kasralainy.edu.eg. 100319475328460016764 100319475328460016764 Yes Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Cairo University,Cairo, Egypt.