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    • Keywords


      Blood plasma; coronary artery disease (CAD); partial least squares-discriminant analysis (PLSDA); proton magnetic resonance spectroscopy (1H MRS)

    • Abstract


      This study aimed to investigate the biochemical profile of blood plasma of patients with coronary artery disease (CAD) and angiographically normal subjects (controls) to determine biomarkers for their differentiation. In this double blind study, 5 mL venous blood was drawn before angiography from CAD patients (n=60) and controls (n=13) comprising angiography normal individuals. In vitro high-resolution NMR spectroscopy of these blood plasma samples was carried out at 400 MHz, and intensity data were analysed with partial least square discriminant analysis. Categorization of subjects as controls or CAD patients and the patients further as single vessel disease (SVD), double vessel disease (DVD) and triple vessel disease (TVD) was done at the end of the study based on their angiography reports. Raised levels of lipids, alanine (Ala) and isoleucine/leucine/valine (Ile/Leu/Val) were observed in CAD patients compared with controls. Partial least square discriminant analysis showed separation between controls vs CAD patients. TVD patients showed increased levels of Ile/Leu/Val and Ala compared with controls and SVD. Alanine, Ile/Leu/Val, and LDL/VLDL appear as possible biomarkers for distinguishing between controls and patients with SVD and TVD. A metabolic adaptation of myocardium may play a role in raising the Ala level.

    • Author Affiliations


      Anu Malik1 Uma Sharma1 R Lakshmy2 Rajiv Narang3 Naranamanglam R Jagannathan1

      1. Department of NMR & MRI Facility, All India Institute of Medical Sciences, New Delhi 110 029, India
      2. Department of Cardiac-Biochemistry, All India Institute of Medical Sciences, New Delhi 110 029, India
      3. Department of Cardiology, All India Institute of Medical Sciences, New Delhi 110 029, India
    • Dates

  • Journal of Biosciences | News

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      Posted on July 25, 2019

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