Relationship between Decreased Serum Superoxide Dismutase Activity and Metabolic Syndrome: Synergistic Mediating Role of Insulin Resistance and β-Cell Dysfunction

Figure 3

Pearson correlation heat map between cellular aging, oxidative stress, and inflammatory markers and clinical characteristics. The figures on the heat map represent the Pearson . , ; , . The values of the color bar represent the correlation coefficients (Pearson ). The red color means a positive correlation whereas the blue color means a negative correlation. And the depth of the color represents the size of the correlation coefficient. Darker color represents a stronger correlation whereas lighter color represents a weaker correlation. Abbreviations: BMI: body mass index; WC: waist circumference; SBP: systolic blood pressure; DBP: diastolic blood pressure; HbA1c: glycosylated hemoglobin A1c; FPG: fasting plasma glucose; PG30, 60, and 120: postload plasma glucose at 30 min, 60 min, and 120 min during OGTT; ISIM: Matsuda index; ISSI-2: insulin secretion-sensitivity index-2; UA: uric acid; TC: total cholesterol; TG: total triglyceride; HDL-C: high-density lipoprotein cholesterol; LDL-C: low-density lipoprotein cholesterol; LTL: leukocyte telomere length; mtDNAcn: mitochondrial DNA copy number; 8-OHdG: 8-hydroxy-2-deoxyguanosine; SOD: superoxide dismutase; GR: glutathione reductase.