Serum cytokine tumor necrosis factor-alpha and interleukin-6 associated with the severity of coronary artery disease: indicators of an active inflammatory burden?

BACKGROUND

Atherosclerosis is a chronic inflammatory process resulting in coronary artery disease.

OBJECTIVES

To determine the relationship between inflammatory markers and the angiographic severity of CAD.

METHODS

We measured inflammatory markers in consecutive patients undergoing coronary angiography. This included C-reactive protein, fibrinogen, serum cytokines (interleukin-1 beta, IL-1 receptor antagonist, IL-6, IL-8, IL-10) and tumor necrosis factor-alpha), all measured by high sensitivity enzyme-linked immunoabsorbent assay.

RESULTS

There was a significant correlation between TNFalpha and the severity of CAD as assessed by the number of obstructed coronary vessels and the Gensini severity score, which is based on the proximity and severity of the lesions. Patients had more coronary vessel disease (> 70% stenosis) with increasing tertiles of serum TNFalpha; the mean number of vessels affected was 1.15, 1.33, and 2.00 respectively (P< 0.001). IL-6 correlated with the Gensini severity score and coronary vessel disease (> 70% stenosis). A weaker correlation was present with IL-1 receptor antagonist. A significant correlation was not found with the other inflammatory markers. After adjustment for major risk factors, multivariate analyses showed that significant independent predictors of CAD vessel disease were TNFalpha (P< 0.05) and combined levels of TNFalpha and IL-6 (P< 0.05). IL-6 levels were independently predictive of Gensini coronary score (P< 0.05).

CONCLUSION

TNFalpha and IL-6 are significant predictors of the severity of coronary artery disease. This association is likely an indicator of the chronic inflammatory burden and an important marker of increased atherosclerosis risk.

Periodontal Destruction Is Associated With Coronary Artery Disease and Periodontal Infection With Acute Coronary Syndrome

BACKGROUND

Coronary artery disease (CAD) is a highly prevalent disease with significant morbidity and mortality. Periodontal disease has been suggested to influence this disease and has been associated with CAD in some epidemiologic studies. However, this relation is still controversial. This study aimed to determine the relationship between periodontal disease measures and CAD and acute coronary syndromes (ACSs).

METHODS

Two hundred one patients presenting with stable angina or ACS referred for coronary angiography underwent a periodontal assessment including evaluation of periodontal pathogens. Severity of CAD was determined by the number of obstructed coronary arteries.

RESULTS

Patients with severe CAD defined by multiple vessel disease had significantly more periodontal destruction than those with mild CAD, as shown by mean clinical attachment level, a measure of chronic periodontal disease (CAL; 5.43 +/- 1.8 versus 4.85 +/- 1.6; P = 0.02), percentage of teeth with CAL >or=5 mm (82.1 +/- 23.4 versus 70.4 +/- 26.9; P = 0.002), and number of missing teeth (8.75 +/- 6.6 versus 6.76 +/- 6.6; P = 0.03). Logistic regression analysis showed that percentage of teeth with CAL >or=5 mm was significantly associated with CAD severity. Patients with ACS had significantly higher plaque scores, gingival index, and Porphyromonas gingivalis counts than stable patients. Logistic regression analysis showed that either plaque score or percentage of P. gingivalis was significantly associated with ACS.

CONCLUSION

Periodontal destruction measures are significantly correlated with CAD severity, whereas periodontal infectious measures are significantly associated with clinical cardiac status.