Association Between Plasma Proprotein Convertase Subtilisin/Kexin Type 9 and the Presence of Metabolic Syndrome in a Predominantly Rural-Based Sub-Saharan African Population

作者：Paquette Martine; Saavedra Yascara Grisel Luna; Chamberland Ann; Prat Annik; Christensen Dirk Lund; Lajeunesse Trempe Fannie; Kaduka Lydia; Seidah Nabil G; Dufour Robert; Baass Alexis^*

来源：Metabolic Syndrome and Related Disorders, 2017, 15(8): 423-429.

DOI：10.1089/met.2017.0027

• PCSK9
• metabolic syndrome
• triglycerides
• LDL-C
• insulin
• sub-Saharan Africa

Background: The prevalence of metabolic syndrome (MetS) has increased dramatically in low- and middle-income countries. Proprotein convertase subtilisin/kexin type 9 (PCSK9) plays a major role in low-density lipoprotein receptor degradation, but its relationship with metabolic parameters is still poorly understood. We aimed to investigate the association between plasma PCSK9 and metabolic parameters in a Kenyan cohort.
Methods: Total plasma PCSK9 levels were measured in 2016 by an in-house enzyme-linked immunosorbent assay (ELISA) using a polyclonal antibody. The International Diabetes Federation (IDF) 2009 consensus statement criteria were used to assess the presence of MetS.
Results: In 1338 Kenyans, 11% of the cohort had 3 MetS criteria. Total plasma PCSK9 concentration was significantly higher in subjects with MetS than in the non-MetS group (166.84.4 vs. 148.0 +/- 1.3, P<0.0001). A progressive increase in circulating PCSK9 was observed when subjects were stratified according to the number of MetS criteria (<3, 3, 4, or 5) [P of the analysis of variance (ANOVA) <0.0001]. In a model corrected for age, sex, lifestyle factors, and body mass index, PCSK9 concentration was a significant predictor of all MetS criteria taken individually, except for waist circumference. Plasma PCSK9 levels were significantly associated with low-density lipoprotein cholesterol, but the strongest association was seen with triglycerides even after multiple adjustments.
Conclusions: The presence of MetS was significantly associated with the PCSK9 concentration. Further studies are needed to provide a molecular connection between PCSK9 and insulin, as well as triglyceride metabolism.

• 出版日期2017-10
• 单位McGill