Plasma N-epsilon-(carboxymethyl)lysine levels are associated with the extent of vessel injury after coronary arterial stenting.
OBJECTIVE
In animal models, increased tissue receptor for advanced glycation end products and its ligands, including N-epsilon-(carboxymethyl)lysine (CML), are critically implicated in postprocedural intimal hyperplasia after balloon injury. In patients undergoing percutaneous coronary interventions with stenting, we investigated whether plasma levels of CML and the soluble form of receptor for advanced glycation end products (sRAGE) changed during poststenting follow-up.


METHODS
We studied 81 patients with coronary artery disease who underwent successful percutaneous coronary interventions. Plasma levels of CML and sRAGE were measured before intervention, and at 1 day and 180 days of follow-up.


RESULTS
CML levels increased significantly at day 1 after stenting and persisted at an elevated level at 180 days (P=0.013), whereas sRAGE levels increased significantly at 180 days (P=0.011). CML levels were significantly higher in multivessel-treated patients than in single-vessel-treated patients both at 1 day and 180 days of follow-up. In addition, CML values were positively associated with the extent of stent area at 1 day and 180 days of follow-up (r=0.278, P=0.022 and r=0.315, P=0.012, respectively). In logistic regression analysis, only the extent of stent area predicted adverse clinical events at 180-day follow-up (P=0.03, odds ratio=14.25, confidence interval=1.25-162.2).


CONCLUSIONS
This study supports the hypothesis that increased circulating levels of CML occurred in the presence of vascular injury. This persistent rise of CML could amplify an inflammatory phenomenon triggered by stent placement and thus contributes to coronary artery disease progression.
Basta
Giuseppina
G
CNR, Institute of Clinical Physiology, Pisa, Massa, Italy. lapina@ifc.cnr.it
Berti
Sergio
S
Cocci
Franca
F
Lazzerini
Guido
G
Parri
Serena
S
Papa
Angela
A
Battaglia
Debora
D
Lubrano
Valter
V
Del Turco
Serena
S
Ravani
Marcello
M
Rizza
Antonio
A
De Caterina
Raffaele
R
Marraccini
Paolo
P
Mazzone
Annamaria
A
D000368:Aged; D000789:Angina, Unstable / Q000628:therapy*; D015906:Angioplasty, Balloon, Coronary; D002097:C-Reactive Protein; D002404:Catheterization / Q000009:adverse effects; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016015:Logistic Models; D008239:Lysine / Q000031:analogs & derivatives* / Q000097:blood; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D000067759:Receptor for Advanced Glycation End Products; D011971:Receptors, Immunologic / Q000097:blood*; D015607:Stents / Q000009:adverse effects*; D016896:Treatment Outcome
D000067759:Receptor for Advanced Glycation End Products; D011971:Receptors, Immunologic; C048496:N(6)-carboxymethyllysine; D002097:C-Reactive Protein; D008239:Lysine