Specific Pharmacological Profile of A 2A Adenosine Receptor Predicts Reduced Fractional Flow Reserve in Patients With Suspected Coronary Artery Disease - Archive ouverte HAL Access content directly
Journal Articles Journal of the American Heart Association Year : 2018

Specific Pharmacological Profile of A 2A Adenosine Receptor Predicts Reduced Fractional Flow Reserve in Patients With Suspected Coronary Artery Disease

Abstract

Background: The rapid and reliable exclusion of myocardial revascularization is a major unmet clinical need in patients with suspected coronary artery disease (CAD) and non‐contributive electrocardiography and troponin. Non‐invasive tests have high rates of false positives and negatives, and there is no biomarker to assess myocardial ischemia. The presence of spare adenosine A2A receptors (A2AR)—characterized by a high dissociation constant/half maximal effective concentration (KD/EC50) ratio—expressed on peripheral blood mononuclear cells (PBMC) has been associated with ischemia during exercise stress testing in patients with CAD. In this work, we investigated the diagnostic accuracy of spare A2AR versus fractional flow reserve (FFR) in patients with suspected CAD. Methods and Results: Sixty patients with suspected CAD, but non‐contributive electrocardiography and troponin, were consecutively enrolled in this prospective study. The binding (KD), functional response (cyclic adenosine monophosphate [cAMP] production; EC50) on PBMC A2AR were compared with FFR results. Patients were divided into 3 groups: 17 (group 1) with normal coronary angiography (n=13) or stenosis <20% (n=4); 21 with CAD and non‐significant FFR (group 2); and 22 with CAD and significant FFR (group 3). Median KD/EC50 was 6‐fold higher in group 3 (4.20; interquartile range: 2.81–5.00) than group 2 (0.66; interquartile range: 0.47–1.25) and 7‐fold higher than group 1 (0.60; interquartile range: 0.30–0.66). Conclusions: In patients with suspected CAD and non‐contributive electrocardiography and troponin, the absence of spare A2AR on PBMC may help to rule out myocardial ischemia.
Fichier principal
Vignette du fichier
SPECIFIC PHARMACOLOGICAL PROFILE OF A(2A) - Paganelli R - Resseguier N - Marlinge M.pdf (601.2 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

hal-01855307 , version 1 (07-08-2018)

Identifiers

Cite

Franck Paganelli, Noémie Resseguier, Marion Marlinge, Marc Laine, Fabrice Malergue, et al.. Specific Pharmacological Profile of A 2A Adenosine Receptor Predicts Reduced Fractional Flow Reserve in Patients With Suspected Coronary Artery Disease. Journal of the American Heart Association, 2018, 7 (8), pp.444-446. ⟨10.1161/JAHA.117.008290⟩. ⟨hal-01855307⟩
153 View
157 Download

Altmetric

Share

Gmail Facebook X LinkedIn More