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Metabolomics analysis reveals insights into biochemical mechanisms of mental stress-induced left ventricular dysfunction.

Publication ,  Journal Article
Boyle, SH; Matson, WR; Velazquez, EJ; Samad, Z; Williams, RB; Sharma, S; Thomas, B; Wilson, JL; O'Connor, C; Jiang, W
Published in: Metabolomics
June 1, 2015

Mental stress induced left ventricular dysfunction (LVD) has been associated with a greater risk of adverse events in coronary heart disease (CHD) patients independent of conventional risk indicators. The underlying biochemical mechanisms of this cardiovascular condition are poorly understood. Our objective was to use metabolomics technology to identify biochemical changes that co-occur with mental stress-induced LVD in patients with clinically stable CHD. Participants were adult CHD patients who were recruited for mental stress-induced myocardial ischemia screening. For this study, we randomly selected 30 patients representing the extremes of the mental stress-induced left ventricular ejection fraction (LVEF) change distribution; 15 who showed LVD (i.e. LVEF reduction ≥5) and 15 who showed a normal left ventricular response (NLVR; i.e. a LVEF increase of ≥5) to three mental stressors. An electrochemistry based metabolomics platform was used to profile pre- and post-stress serum samples yielding data for 22 known compounds, primarily within the tyrosine, tryptophan, purine and methionine pathways. There were significant stress-induced changes in several compounds. A comparison between the NLVR and LVD groups showed significant effects for kynurenine (p = .036, N-acetylserotonin (p = .054), uric acid (p = .015), tyrosine (p = .019) and a trend for methionine (p = .065); the NLVR group showed a significantly greater stress-induced reduction in all of those compounds compared to the LVD group. Many of these biochemicals have been implicated in other stress-related phenomena and are plausible candidates for mechanisms underlying LVD in response to mental stress.

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Published In

Metabolomics

DOI

ISSN

1573-3882

Publication Date

June 1, 2015

Volume

11

Issue

3

Start / End Page

571 / 582

Location

United States

Related Subject Headings

  • Analytical Chemistry
  • 3401 Analytical chemistry
  • 3205 Medical biochemistry and metabolomics
  • 3101 Biochemistry and cell biology
  • 1103 Clinical Sciences
  • 0601 Biochemistry and Cell Biology
  • 0301 Analytical Chemistry
 

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Boyle, S. H., Matson, W. R., Velazquez, E. J., Samad, Z., Williams, R. B., Sharma, S., … Jiang, W. (2015). Metabolomics analysis reveals insights into biochemical mechanisms of mental stress-induced left ventricular dysfunction. Metabolomics, 11(3), 571–582. https://doi.org/10.1007/s11306-014-0718-y
Boyle, Stephen H., Wayne R. Matson, Eric J. Velazquez, Zainab Samad, Redford B. Williams, Swati Sharma, Beena Thomas, Jennifer L. Wilson, Christopher O’Connor, and Wei Jiang. “Metabolomics analysis reveals insights into biochemical mechanisms of mental stress-induced left ventricular dysfunction.Metabolomics 11, no. 3 (June 1, 2015): 571–82. https://doi.org/10.1007/s11306-014-0718-y.
Boyle SH, Matson WR, Velazquez EJ, Samad Z, Williams RB, Sharma S, et al. Metabolomics analysis reveals insights into biochemical mechanisms of mental stress-induced left ventricular dysfunction. Metabolomics. 2015 Jun 1;11(3):571–82.
Boyle, Stephen H., et al. “Metabolomics analysis reveals insights into biochemical mechanisms of mental stress-induced left ventricular dysfunction.Metabolomics, vol. 11, no. 3, June 2015, pp. 571–82. Pubmed, doi:10.1007/s11306-014-0718-y.
Boyle SH, Matson WR, Velazquez EJ, Samad Z, Williams RB, Sharma S, Thomas B, Wilson JL, O’Connor C, Jiang W. Metabolomics analysis reveals insights into biochemical mechanisms of mental stress-induced left ventricular dysfunction. Metabolomics. 2015 Jun 1;11(3):571–582.
Journal cover image

Published In

Metabolomics

DOI

ISSN

1573-3882

Publication Date

June 1, 2015

Volume

11

Issue

3

Start / End Page

571 / 582

Location

United States

Related Subject Headings

  • Analytical Chemistry
  • 3401 Analytical chemistry
  • 3205 Medical biochemistry and metabolomics
  • 3101 Biochemistry and cell biology
  • 1103 Clinical Sciences
  • 0601 Biochemistry and Cell Biology
  • 0301 Analytical Chemistry