Elsevier

American Heart Journal

Volume 163, Issue 2, February 2012, Pages 274-279
American Heart Journal

Coronary Artery Disease
Associations of pentraxin-3 with cardiovascular events, incident heart failure, and mortality among persons with coronary heart disease: Data from the Heart and Soul Study

https://doi.org/10.1016/j.ahj.2011.11.007Get rights and content

Background

Pentraxin-3 (PTX3) is an inflammatory marker thought to be more specific to vascular inflammation than C-reactive protein (CRP). Whether PTX3 is independently associated with adverse events among persons with stable coronary heart disease (CHD), independently of CRP, and whether kidney dysfunction influences these associations are not known.

Methods

We evaluated the associations of baseline PTX3 levels with all-cause mortality, cardiovascular (CV) events (myocardial infarction, stroke, or CHD death), and incident heart failure (HF) during 37 months among ambulatory persons with stable CHD participating in the Heart and Soul Study. Cox proportional hazards models were adjusted for age, sex, race, hypertension, diabetes, smoking, and CRP.

Results

Among 986 persons with stable CHD, each 1 unit increase in log PTX3 at baseline was associated with an 80% increased risk of all-cause mortality (hazard ratio [HR] 1.8, 95% CI 1.5-2.1), a 50% increased risk of CV events (HR 1.5, 95% CI, 1.2-1.9), and an 80% greater risk of incident HF (HR 1.8, 95% CI, 1.3-2.5). Further adjustment for estimated glomerular filtration rate (eGFR) attenuated these associations to 1.6 (1.3-1.9) for mortality, 1.3 (1.0-1.6) for CV events and 1.5 (1.1-2.1) for incident HF. Stratification by eGFR >60 mL/min per 1.73m2 or <60 mL/min per 1.73m2 did not affect these associations (P interaction > .3 for all outcomes).

Conclusions

Among persons with stable CHD, higher PTX3 concentrations were associated with increased risk for all-cause mortality, CV events, and incident HF independently of systemic inflammation. Adjustment for eGFR modestly attenuated these associations, suggesting that future studies of PTX3 should adjust for kidney function.

Section snippets

Participants

As described previously, the Heart and Soul Study is a prospective cohort study initially designed to evaluate the influence of psychosocial factors on CVD events in ambulatory persons with stable CHD.15 Study participants were recruited from outpatient clinics in the San Francisco Bay Area using ≥1 of the following inclusion criteria: (1) history of myocardial infarction, (2) angiographic evidence of 50% stenosis in ≥1 coronary vessels, (3) evidence of exercise-induced ischemia by treadmill or

Results

Among 986 participants, mean (SD) age was 67 years (11), median (25th, 75th percentiles) of PTX3 was 0.60 ng/mL (0.41, 0.96), and mean (SD) of eGFR was 70.8 (23.0). Persons with higher PTX3 were older, more likely to be of white race, more likely to have a history of chronic HF (CHF), and had lower eGFR, higher LV mass index, and lower ejection fraction by echocardiography. Persons in the highest tertile of PTX3 were less likely to smoke, had lower triglycerides, and had lower levels of CRP and

Discussion

In this cohort of persons with stable CHD, we found that PTX3 is significantly associated with all-cause mortality, CV events, and incident HF independently of demographics, traditional CVD risk factors, and systemic inflammation (CRP). Adjustment for eGFR modestly attenuated these associations. Our findings suggest that this novel marker of vascular inflammation may be an important mechanism involved in vascular injury and repair among persons with stable CHD.

To our knowledge, we are the first

Acknowledgements

Potential conflicts of interest

None declared.

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