Plasma lipidomic profiling identifies a novel complex lipid signature associated with ischemic stroke in chronic

Farsad Afshinnia1, Adil Jadoon1, Thekkelnaycke M Rajendiran2,3

  • 1University of Michigan, Department of Internal Medicine-Nephrology, Ann Arbor, MI.

Journal of Translational Science
|November 26, 2020
PubMed

Insights

Plasma lipid alterations, including phosphatidylcholines (PCs) and phosphatidylethanolamines (PEs), are associated with stroke in patients with chronic kidney disease (CKD). These lipid changes may serve as novel risk factors for stroke.

Area of Science:

  • Biochemistry
  • Metabolomics
  • Nephrology

Background:

  • Dyslipidemia is a known contributor to ischemic stroke.
  • However, the specific plasma lipidomic profiles associated with stroke in individuals with chronic kidney disease (CKD) remain understudied.

Purpose of the Study:

  • To identify and characterize plasma lipid alterations linked to stroke in patients with CKD.
  • To explore the potential of these lipid changes as risk factors for stroke in this population.

Main Methods:

  • A cross-sectional study involving 214 participants from the Clinical Phenotyping and Resource Biobank Core (CPROBE).
  • Plasma samples were analyzed using liquid chromatography/mass spectrometry-based untargeted lipidomics.
  • Statistical analyses included t-tests with false discovery rate adjustment and logistic regression to identify independent lipid predictors of stroke.

Main Results:

  • Over 330 lipid compounds were identified, with significant overrepresentation of phosphatidylcholines (PCs) and phosphatidylethanolamines (PEs) in patients with stroke.
  • Elevated levels of palmitate and PC38:4 were independently associated with a higher risk of stroke.
  • Trends toward increased abundance of PCs, PEs, plasmenyl-PEs (pPEs), and sphingomyelins were observed in stroke patients.

Conclusions:

  • Differential regulation of specific lipids, including palmitate, PCs, and PEs, is observed in CKD patients with a history of stroke.
  • These lipid alterations may represent a novel, unrecognized risk factor for stroke in CKD.
  • Further research is needed to determine the temporal relationship and potential for risk stratification and modification.
Abstract

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