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Revista médica de Chile

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GREIG, Douglas et al. Inflammation and endothelial dysfunction in patients with chronic heart failure. Rev. méd. Chile [online]. 2008, vol.136, n.6, pp.687-693. ISSN 0034-9887.

Background: In chronic heart failure (CHF), endothelial dysfunction (ED) is a consequence of an imbalance of vascular tone regulating substances. The relationship between ED and inflammation has not been fully investigated. Aim: To assess the association between inflammation and ED in CHF. Material and methods: Forty two patients aged 56±14 years (80% male) with a CHF in functional capacity II-III (New York Heart Association) and an ejection fraction (FE) <40% were consecutively studied. Patients were classified according to the presence or absence of ED, evaluated by reactive vasodilation measured by ultrasound, after brachial artery compression. Circulating levels of highly sensitive C reactive protein (usCRP), tumor necrosis factor a (TNFá) and interleukin-6 (IL-6) were determined by ELISA. A group of 15 healthy subjects of similar age, were studied as controls. Results: Sixty seven percent of patients had ED. Compared to controls, patients with CHF had higher usCRP (0.58±0.4 and 4.9±7.1 mg/dl respectively, p <0.01) and IL-6 (1.38±0.06 and 3.1±1.7 mg/dl respectively, p <0.01). Compared to patients without ED, patients with CHF and ED had higher levéis of usCRP (3.0±0.4 and 6.0±5.7 mg/dl respectively, p <0.01) and TNFá (0.31±0.26 and 1.0±1.1 pg/ml, p =0.02). No differences in IL-6 were found between CHF groups. Conclusions: In CHF patients, the presence of ED was associated with increased levéis of inflammatory markers

Keywords : Endothelium, vascular; Heart failure; Inflammation.

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