Objective: Low levels of IgM anti-phosphorylcholine (anti-PC) increase the risk of cardiovascular events (CVE). Here we investigate the association of low anti-PC with the progression of carotid intima media thickness (C-IMT) and incidence of CVE in a large cohort of individuals at high risk of CVE, the IMPROVE, a prospective multicenter European study. Methods: 3711 subjects (54-79 years) with at least three established cardiovascular risk factors were enrolled. Baseline serum levels of IgM anti-PC were measured by ELISA. Carotid ultrasound investigations were performed at baseline and after 15 and 30 months of follow-up. The risk of C-IMT progression and ischemic CVE associated with low anti-PC levels was tested by logistic regression and Cox regression analysis, respectively. Risk estimates were adjusted by center and conventional cardiovascular risk factors. Results: 3670 study participants were included in the present analysis and 213 CVE were recorded during a 3 year follow up. Anti-PC levels (U/ml) were classified into quartiles [Q1 <= 40, Q2 >40-<= 64, Q3 >64- <= 102, Q4 > 102]. In men, low levels of anti-PC (Q1) were associated with the highest (> 90th) percentile of the fastest C-IMT progression, i.e. the segment showing the fastest progression over 30 months in the whole carotid tree, with an OR of 1.41 (95%CI, 1.02-1.9) and with an increased risk of CVE with a multivariable adjusted HR of 1.85 (95%CI, 1.1-3.1). No significant associations were found in women. Conclusions: Low anti-PC levels increase the risk of CVE in men. This effect may be partly mediated by a fast C-IMT progression.
Low levels of IgM antibodies against phosphorylcholine are associated with fast carotid intima media thickness progression and cardiovascular risk in men / B. Gigante, K. Leander, M. Vikström, D. Baldassarre, F. Veglia, R.J. Strawbridge, O. McLeod, K. Gertow, B. Sennblad, S. Shah, D. Zabaneh, S.E. Humphries, J. Kauhanen, R. Rauramaa, A.J. Smit, E. Mannarino, P. Giral, E. Tremoli, A. Hamsten, J. Frostegård, U. de Faire. - In: ATHEROSCLEROSIS. - ISSN 0021-9150. - 236:2(2014 Oct), pp. 394-399. [10.1016/j.atherosclerosis.2014.07.030]
Low levels of IgM antibodies against phosphorylcholine are associated with fast carotid intima media thickness progression and cardiovascular risk in men
D. Baldassarre;F. Veglia;E. Tremoli;
2014
Abstract
Objective: Low levels of IgM anti-phosphorylcholine (anti-PC) increase the risk of cardiovascular events (CVE). Here we investigate the association of low anti-PC with the progression of carotid intima media thickness (C-IMT) and incidence of CVE in a large cohort of individuals at high risk of CVE, the IMPROVE, a prospective multicenter European study. Methods: 3711 subjects (54-79 years) with at least three established cardiovascular risk factors were enrolled. Baseline serum levels of IgM anti-PC were measured by ELISA. Carotid ultrasound investigations were performed at baseline and after 15 and 30 months of follow-up. The risk of C-IMT progression and ischemic CVE associated with low anti-PC levels was tested by logistic regression and Cox regression analysis, respectively. Risk estimates were adjusted by center and conventional cardiovascular risk factors. Results: 3670 study participants were included in the present analysis and 213 CVE were recorded during a 3 year follow up. Anti-PC levels (U/ml) were classified into quartiles [Q1 <= 40, Q2 >40-<= 64, Q3 >64- <= 102, Q4 > 102]. In men, low levels of anti-PC (Q1) were associated with the highest (> 90th) percentile of the fastest C-IMT progression, i.e. the segment showing the fastest progression over 30 months in the whole carotid tree, with an OR of 1.41 (95%CI, 1.02-1.9) and with an increased risk of CVE with a multivariable adjusted HR of 1.85 (95%CI, 1.1-3.1). No significant associations were found in women. Conclusions: Low anti-PC levels increase the risk of CVE in men. This effect may be partly mediated by a fast C-IMT progression.File | Dimensione | Formato | |
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