Serum Ferritin Levels in Blacks Without Known Cardiovascular Disease (from the Jackson Heart Study)

• Published in: The American journal of cardiology Vol. 120; no. 9; pp. 1533 - 1540
• Main Authors: Egbuche, Obiora, Millard, Heather R., Renelus, Benjamin, Maihemuti, Axiyan, Musani, Solomon K., Fox, Ervin R., Liu, Jiankang, Taylor, Herman A., Bidulescu, Aurelian
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.11.2017; Elsevier Limited
• Subjects: Adult; Adults; African Americans; Age; Aged; Aged, 80 and over; Angina pectoris; Angioplasty; Aorta; Arteriosclerosis; Atherosclerosis; Calcification (ectopic); Calcium; Cardiovascular disease; Cardiovascular diseases; Cardiovascular Diseases - blood; Cardiovascular Diseases - ethnology; Cholesterol; Cohort Studies; Coronary artery; Coronary artery disease; Coronary vessels; Correlation analysis; Data collection; Family medical history; Female; Ferritin; Ferritins - blood; Health risk assessment; Heart; Heart attacks; Heart diseases; Humans; Incidence; Iron; Male; Men; Middle Aged; Mortality; Population; Regression analysis; Risk Factors; Stroke; United States; Young Adult
• ISSN: 0002-9149; 1879-1913
• DOI: 10.1016/j.amjcard.2017.07.045

There has been conflicting results regarding the role of ferritin, a nonspecific marker of systemic inflammation, in the development of coronary heart disease (CHD). We aimed to evaluate the association of serum ferritin with incident CHD, incident stroke, and subclinical measurements of atherosclerosis among blacks. For our prospective study, we utilized data from the Jackson Heart Study. Eligible participants (n = 4,659) who were free from CHD were enrolled in 2000 to 2004. The participants' baseline serum ferritin levels were obtained, and they were followed up for an average of 8 years to identify incident CHD events and incident stroke. We used multivariate linear regression and Cox proportional hazard models to evaluate the association of serum ferritin with incident CHD events and incident stroke. The age-adjusted correlations between ferritin and specific study covariates, including carotid intima-media thickness, coronary artery calcium, and abdominal aortic calcium, were obtained. During an average of 8 years of follow-up, 161 incident CHD events and 117 incident stroke events were documented. There was no significant association between ferritin levels and incident CHD events (p = 0.54 in men and p = 0.31 in women) and incident stroke (p = 0.17 in men and p = 0.56 in women), or both considered together (p = 0.70 in men and p = 0.69 in women). Ferritin was significantly correlated with abdominal aortic calcium (r = 0.09, p <0.01) in women but not in men. In conclusion, a higher serum ferritin level was not associated with an increased risk of incident CHD events or incident stroke, and may not be an independent predictor of incident CHD or stroke in blacks.