Lupus & antiphospholipid syndrome

High-density lipoprotein cholesterol subfraction HDL2 is associated with improved endothelial function in systemic lupus erythematosus

Lupus Sci MedPublished Cross-sectional study

Authors' conclusion

HDL 2, a large HDL particle, was independently associated with greater FMD and may be a biomarker of vascular health in SLE.

Study context

Population
Adult patients with systemic lupus erythematosus (SLE) without known cardiovascular risk factors or disease
Participants
41 patients
Outcome
Association of high-density lipoprotein (HDL)/LDL subfractions with brachial FMD
Methodological detailsconsecutive patients, machine learning models
  • Consecutive patients
  • Machine learning models

Main finding

As reported in the abstract

Association of lipoprotein subfractions with FMD

Median flow-mediated dilatation (FMD) (IQR 5.00%)

4.48%

Univariate: lower LDL1 associated with higher log-transformed FMD (r)

r=−0.313

p<0.05

Univariate: higher HDL2 associated with higher log-transformed FMD (r)

r=0.313

p<0.05

Multiple linear regression: HDL2 independent predictor of higher FMD, adjusted for age, BMI, LDL1 and systolic blood pressure (β, SE=0.012)

β=0.024

p<0.05

Observational data: associations, not effects.

Further findings

Common carotid artery (CCA) intima-media thickness (IMT)

Median IMT (IQR 0.12 mm)
0.54 mm
Age, low-density lipoprotein (LDL) cholesterol and systolic blood pressure independently associated with higher CCA IMT after adjusting for BMI and HDL2

Machine learning prediction of FMD (HDL2 positive association, prednisolone dose, LDL cholesterol, LDL1)

Model prediction of FMD
r=0.433, p<0.01

Original publication

High-density lipoprotein cholesterol subfraction HDL2 is associated with improved endothelial function in systemic lupus erythematosus. Lupus Sci Med. Published 22 January 2024. doi:10.1136/lupus-2023-001030

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