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Published on: January 28, 2020
Infectious agents, protein electrophoresis and immunoglobulin levels in patients with coronary artery ectasia
Gulay Yetkin1, Didem Tascioglu2, Selcuk Ozturk3
1Istinye University Faculty of Medicine, Department of Microbiology, Liv Hospital Istanbul, Turkey; International Medical Center IMC Hospital Mersin, Turkey.
Insights
Coronary artery ectasia (CAE) may differ from atherosclerosis, with higher IgE and alpha-2 globulin levels in patients with CAE. Infectious agents like C. pneumoniae and H. pylori do not appear to play a significant role in CAE pathogenesis.
Area of Science:
- Cardiology
- Immunology
- Biochemistry
Background:
- Coronary artery ectasia (CAE) shares similarities with atherosclerosis but exhibits distinct pathophysiological features.
- Investigating inflammatory markers and infectious agents may elucidate differences between CAE and atherosclerosis.
Purpose of the Study:
- To investigate potential differences in the pathophysiology of CAE compared to coronary artery disease (CAD) alone.
- To assess the role of inflammatory parameters, specifically IgE and protein electrophoresis, in CAE.
Main Methods:
- Compared laboratory parameters, including IgG antibodies against C. pneumoniae and H. pylori, total IgE, and protein electrophoresis, between patients with CAD and those with both CAD and CAE.
- Utilized logistic regression to identify independent predictors of CAE presence.
Main Results:
- Patients with CAE + CAD showed significantly higher levels of IgE, Alpha 2 macroglobulin, and Beta-1 globulin compared to CAD alone.
- Elevated IgE and Alpha 2 macroglobulin were independently associated with the presence of CAE.
- No significant differences in IgG antibodies against C. pneumoniae and H. pylori were observed between groups.
Conclusions:
- The independent association of serum IgE and alpha-2 globulins with CAE suggests distinct pathophysiological mechanisms compared to atherosclerosis.
- Common infectious agents like C. pneumoniae and H. pylori do not seem to contribute additionally to CAE pathogenesis.
Background:
Although the mechanism of coronary artery ectasia (CAE) shares the common pathophysiologic steps resembling those of atherosclerosis, there are certain discrepancies or aspects incompatible with atherosclerosis. Therefore, we hypothesize that the pathophysiology of CAE might differ from that of atherosclerosis in terms of inflammatory parameters, infectious agents and the read out of protein electrophoresis.
Materials And Methods:
Seventy patients with coronary artery disease (CAD) and 30 patients with both CAD and CAE comprised the study populations. Blood samples were centrifuged for the measurement of IgG antibodies against C.pneumoniae and H.Pylori, alongside with total IgE, IgG levels and protein electrophoresis.
Results:
There were not statistically significant differences between patients with and without CAE regarding the complete blood counting and routine biochemical laboratory parameters except hemoglobin levels. Among other studied laboratory parameters, IgE, Alpha 2 macroglobulin, Beta-1 globulin levels were found to be higher in patients with CAE + CAD than those of CAD alone. Logistic regression analysis by including the variables IgE, Hb, Alpha 2 macroglobulin, beta-1 globulin, and gender, revealed that Ig E (Odd ratio:1.004 85 % CI: 1.000-1.008, p = 0.01) and alpha 2 macroglobulin (Odds ratio: 9.41, 95 %CI: 1.69-52.28, p = 0.028) were independently and positively associated with the presence of CAE.
Conclusion:
Independent association of serum IgE levels and alpha2 globulins with the presence of CAE underlines the divergent features of pathophysiology of CAE compared with atherosclerosis or CAD alone. Comparable activity of humoral immunity measured by IgG antibody against C.Pneumoniae, and H. Pylori has suggested that these infectious agents do not play an additional role in the pathogenesis of CAE.
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