Alterations in plasma soluble vascular endothelial growth factor receptor-1 (sFlt-1) concentrations during coronary artery bypass graft surgery: relationships with post-operative complications.

Yves Denizot (1) , Alexandre Le Guyader (2, 3) , Elisabeth Cornu (2, 3) , Marc Laskar (2, 3) , Isabelle Orsel (4) , Christelle Vincent-Fabert (1) , Nathalie Nathan-Denizot (4, 3)

1 PMRIL - Physiologie Moléculaire de la Réponse Immune et des Lymphoproliférations
2 Service de Chirurgie Thoracique et Vasculaire - Médecine vasculaire [CHU Limoges]
3 ERMA - Equipe de Recherche Médicale Appliquée
4 Service d'Anesthésie-Réanimation [CHU Limoges]

BACKGROUND: Plasma concentrations of sFlt-1, the soluble form of the vascular endothelial growth factor receptor (VEGF), markedly increase during coronary artery bypass graft (CABG) surgery with extracorporeal circulation (ECC). We investigated if plasma sFlt-1 values might be related to the occurrence of surgical complications after CABG. METHODS: Plasma samples were collected from the radial artery catheter before vascular cannulation and after opening the chest, at the end of ECC just before clamp release, after cross release, after weaning from ECC, at the 6th and 24th post-operative hour. Thirty one patients were investigated. The presence of cardiovascular, haematological and respiratory dysfunctions was prospectively assessed. Plasma sFlt-1 levels were measured with commercially ELISA kits. RESULTS: Among the 31 investigated patients, 15 had uneventful surgery. Patients with and without complications had similar pre-operative plasma sFlt-1 levels. Lowered plasma sFlt-1 levels were observed at the end of ECC in patients with haematological (p = 0.001, ANOVA) or cardiovascular (p = 0.006) impairments, but not with respiratory ones (p = 0.053), as compared to patients with uneventful surgery. CONCLUSION: These results identify an association between specific post-CABG complication and the lower release of sFlt-1 during ECC. sFlt-1-induced VEGF neutralisation might, thus, be beneficial to reduce the development of post-operative adverse effects after CABG.

Domaines: Immunologie; Matériaux; Chimie analytique

Yves Denizot, Alexandre Le Guyader, Elisabeth Cornu, Marc Laskar, Isabelle Orsel, et al.. Alterations in plasma soluble vascular endothelial growth factor receptor-1 (sFlt-1) concentrations during coronary artery bypass graft surgery: relationships with post-operative complications.. Journal of Cardiothoracic Surgery, 2008, 3, pp.16. ⟨10.1186/1749-8090-3-16⟩. ⟨hal-00344826⟩