“Effects of Selenium on Stress Response in Coronary Artery Bypass Graft Surgery: A Clinical Trial Study”

AUTHORS

Mohsen Ziyaeifard 1 , * , Parisa Ziyaeifard 2

1 Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran

2 Medical Student, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran

How to Cite: Ziyaeifard M, Ziyaeifard P. “Effects of Selenium on Stress Response in Coronary Artery Bypass Graft Surgery: A Clinical Trial Study”, Anesth Pain Med. 2017 ; 7(2):e45461. doi: 10.5812/aapm.45461.

ARTICLE INFORMATION

Anesthesiology and Pain Medicine: 7 (2); e45461
Published Online: March 11, 2017
Article Type: Letter
Received: January 6, 2017
Revised: January 21, 2017
Accepted: February 15, 2017
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Keywords

Stress Response Biomarker Cardiac Surgery Inflammatory Factor

Copyright © 2017, Iranian Society of Regional Anesthesia and Pain Medicine (ISRAPM). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

Dear Editor,

In the recent paper entitled “Effects of Selenium on Stress Response in Coronary Artery Bypass Graft Surgery: A Clinical Trial Study”, Ali Mirmansouri et al. evaluated the effects of selenium administration on stress response in the coronary artery bypass graft surgery. In their paper, the authors administered selenium preoperatively and assessed the stress response. In this study, the stress response was estimated only by measuring the level of blood sugar (1). In our opinion, this study is weak because there are many confounding factors that can have effects on blood sugar; factors such as history of diabetes, type of surgery, levels of anesthesia and pain, administration of inotrops and steroids, release of stress hormones, resistance to insulin, and administration of the dextrose water can increase the blood sugar (2-4). The authors have not considered the effects of these confounding factors on blood sugar. On the other hand, the high blood sugar indirectly increases the stress level (4). Therefore, it was better that they measured the related biomarkers of stress in addition to the blood sugar for the assessment of stress response.

The stress response to injury or surgery is characterized by activation of nervous system and secretion of pituitary hormones (5).

Some of the biomarkers that are increased following the surgery include catecholamines and norepinephrine, adrenocorticotrophic hormone, growth hormone, insulin-like growth factor, prolactin, cortisol, glucagon and leptin (5, 6).

The cytokines have a main role in an inflammatory response to surgery. The most important cytokines released are interleukin-1, tumor necrosis factor-a (TNF-a) and interleukin -6. Also, C-reactive protein (CRP), and glutathione redox cycle increase in response to surgery (6, 7).

Some factors that have been decreased in response to surgery include insulin, T3, and thyroid stimulatory hormone (7).

In the Franke et al. study, the serum levels of proinflamatory interleukin (IL-6), IL-8, TNF-a, and CRP were measured to assess the stress response and there was a relationship between Il-6 synthesis and the degree of surgical trauma (8).

Elahi et al. evaluated the glutathione redox cycle in the background of cardiac surgery. They found an increase in free radical production during the cardiopulmonary bypass by measuring the increase in the total and oxidized glutathione (9, 10).

Hoda MR et al. indicated that cardiopulmonary bypass causes a stress hormonal response and they measured the plasma levels of neurohormonal stress factors, such as leptin, and cortisol (11).

According to the above-mentioned issue and in our opinion, it was better some of the neurohormonal and inflammatory factors in addition to blood sugar be measured to evaluate the stress response following the administration of selenium.

References

  • 1.

    Mirmansouri A, Imantalab V, Jouryabi AM, Kanani G, Nabi BN, Farzi F, et al. Effect of Selenium on Stress Response in Coronary Artery Bypass Graft Surgery: A Clinical Trial. Anesthesiol Pain Med. 2017; 7(1)[DOI]

  • 2.

    Estrada CA, Young JA, Nifong LW, Chitwood WR Jr. Outcomes and perioperative hyperglycemia in patients with or without diabetes mellitus undergoing coronary artery bypass grafting. Ann Thorac Surg. 2003; 75(5) : 1392 -9 [PubMed]

  • 3.

    American Diabetes A. Economic costs of diabetes in the U.S. In 2007. Diabetes Care. 2008; 31(3) : 596 -615 [DOI][PubMed]

  • 4.

    Yendamuri S, Fulda GJ, Tinkoff GH. Admission hyperglycemia as a prognostic indicator in trauma. J Trauma. 2003; 55(1) : 33 -8 [DOI][PubMed]

  • 5.

    Desborough JP. The stress response to trauma and surgery. Br J Anaesth. 2000; 85(1) : 109 -17 [PubMed]

  • 6.

    Preeshagul I, Gharbaran R, Jeong KH, Abdel-Razek A, Lee LY, Elman E, et al. Potential biomarkers for predicting outcomes in CABG cardiothoracic surgeries. J Cardiothorac Surg. 2013; 8 : 176 [DOI][PubMed]

  • 7.

    Rahal A, Kumar A, Singh V, Yadav B, Tiwari R, Chakraborty S, et al. Oxidative stress, prooxidants, and antioxidants: the interplay. Biomed Res Int. 2014; 2014 : 761264 [DOI][PubMed]

  • 8.

    Franke A, Lante W, Fackeldey V, Becker HP, Kurig E, Zoller LG, et al. Pro-inflammatory cytokines after different kinds of cardio-thoracic surgical procedures: is what we see what we know? Eur J Cardiothorac Surg. 2005; 28(4) : 569 -75 [DOI][PubMed]

  • 9.

    Elahi MM, Yii M, Matata BM. Significance of oxidants and inflammatory mediators in blood of patients undergoing cardiac surgery. J Cardiothorac Vasc Anesth. 2008; 22(3) : 455 -67 [DOI][PubMed]

  • 10.

    Fudulu D, Angelini G. Oxidative Stress after Surgery on the Immature Heart. Oxid Med Cell Longev. 2016; 2016 : 1971452 [DOI][PubMed]

  • 11.

    Hoda MR, El-Achkar H, Schmitz E, Scheffold T, Vetter HO, De Simone R. Systemic stress hormone response in patients undergoing open heart surgery with or without cardiopulmonary bypass. Ann Thorac Surg. 2006; 82(6) : 2179 -86 [DOI][PubMed]

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