Characterization of Lipoprotein Composition and Function in Pediatric Psoriasis Reveals a more Atherogenic Profile.

Psoriasis is associated with increased cardiovascular disease (CVD) in adults, but the risk profile of children with psoriasis remains to be fully characterized. We measured lipoprotein composition and function in 44 pediatric psoriasis patients and 44 age- and sex-matched healthy controls, using NMR spectroscopy and a validated ex vivo assay of high density lipoprotein (HDL) cholesterol efflux capacity (CEC). Mean age was 13.0 years and the population was ethnically diverse. Children with psoriasis had higher waist-hip ratios (0.85 vs. 0.80; P<0.002) and insulin resistance measures (log transformed HOMA-IR 0.65 vs. 0.41; P=0.07). Despite comparable traditional lipid values, having psoriasis was associated with higher apolipoprotein B concentrations (72.4 vs. 64.6; P=0.02), decreased large HDL particles (5.3 vs. 6.7; P<0.01), and reduced CEC after adjusting for age, sex, fasting glucose, HOMA-IR, systolic blood pressure, body mass index, apolipoprotein A-1, and HDL cholesterol concentration (beta -0.22, P=0.02). Pediatric psoriasis patients have a more atherogenic cardiometabolic risk profile, with evidence of insulin resistance and lipoprotein dysfunction by particle size, number, and functional assessment. These findings may provide a basis for the observed link later in life between psoriasis and CVD and support the need to screen and educate young patients to minimize later complications.Journal of Investigative Dermatology accepted article preview online, 30 September 2015. doi:10.1038/jid.2015.385.