Perbedaan Kadar Osteoprotegerin Serum Penderita Diabetes Melitus Tipe 2 tanpa dan dengan Penyakit Jantung Koroner

Abstract

Type 2 diabetes mellitus (DM) is caused by insulin resistance and/or impaired insulin secretion, thus causing hyperglycemia leading to endothelial dysfunction. Endothelial dysfunction is an early process of atherosclerosis and is one of the risk factors for coronary arterial disease (CAD). Currently, coronary angiography is used as the gold standard for diagnosing CAD. Examination of osteoprotegerin (OPG) is an alternative assay for endothelial dysfunction marker which is less invasive, has the ability to detect earlier, and less expensive. Osteoprotegerin is associated with the development of arterial plaque in patients with type 2 DM. The aim of this study was to determine the differences in serum OPG levels in patients with type 2 DM with and without CAD. The study was conducted in September–December 2012 in the Endocrine Clinic and Emergency Unit of Dr. Hasan Sadikin General Hospital Bandung on 102 patients aged between 35–75 years, with 51 subjects type 2 DM patients with CAD and 51 subjects with type 2 DM without CAD, both diagnosed by clinician. The method used was, OPG enzyme linked immunosorbent assay (ELISA) examination method. The study was an observational cross-sectional comparative study. Statistical analysis was performed using normality test with Shapiro Wilk’s, independent T and Mann Whitney test. The median value for patients with type 2 DM with CAD equaled to 6.1 pmol/L and the value for type 2 diabetic patients without CAD was 2.6 pmol/L. In this study, the OPG levels obtained in patients type 2 DM with CAD were higher than those without CAD. In conclusion, there is a significant difference in OPG levels between type 2 DM with and without CAD groups.

Keywords

• Endothelial dysfunction
• type 2 diabetes
• osteoprotegerin