Decreased small dense LDL levels in Gilbert's syndrome

ObjectiveTo investigate the role of small dense low density lipoprotein cholesterol (sd-LDL-C) in the mechanism of decreased incidence of cardiovascular disease in Gilbert's syndrome (GS).Design and methodssd-LDL-C, ox-LDL, and high sensitive C reactive protein (hs-CRP) levels were investigated in subjects with GS (n = 42) and compared to healthy controls (n = 52).ResultsAge, gender and body mass index (BMI) distributions were similar between the two groups. sd-LDL-C, ox-LDL and hs-CRP levels were lower in GS than the healthy controls (p < 0.001, p < 0.001 and p = 0.001, respectively). Unconjugated bilirubin was negatively correlated with sd-LDL-C, ox-LDL and hs-CRP (r = −0.594, p < 0.001; r = −0.249, p = 0.016 and r = − 0.373, p < 0.001 respectively). In addition, sd-LDL-C was positively correlated with ox-LDL (r = 0.307, p = 0.003).ConclusionsThe findings of this preliminary study suggest that reduced sd-LDL-C, ox-LDL and hs-CRP levels may have a role in preventing atherosclerosis in subjects with GS.