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Antihypertensive medications and C-reactive protein in the multi-ethnic study of atherosclerosis
Walter Palmas1, Shuangge Ma, Bruce Psaty
1Division of General Medicine, Department of Medicine, Mailman School of Public Health, Columbia University Medical Center, New York, New York.
Insights
Beta-blocker use, and ACE inhibitor/ARB use in monotherapy, correlate with lower C-reactive protein (CRP) levels in hypertension patients. These findings suggest potential benefits for specific antihypertensive medication choices.
Area of Science:
- Cardiology
- Pharmacology
- Clinical Medicine
Background:
- The impact of various antihypertensive medication classes on C-reactive protein (CRP) levels remains incompletely understood.
- CRP is a marker of inflammation, and its association with cardiovascular disease necessitates investigation into factors influencing its levels.
Purpose of the Study:
- To investigate the association between different classes of antihypertensive medications and serum CRP levels.
- To explore potential differences in CRP levels based on medication class in treated hypertensive individuals.
Main Methods:
- A cross-sectional analysis was conducted using data from the Multi-Ethnic Study of Atherosclerosis.
- Participants with treated hypertension, free of cardiovascular disease, were included, categorized by antihypertensive medication class (beta-blockers, calcium channel blockers, diuretics, ACE inhibitors/ARBs).
Main Results:
- Mean CRP levels were significantly lower in participants taking beta-blockers compared to those not on beta-blockers (2.13 vs 2.54 mg/L, P = .002), persisting after adjustment.
- In monotherapy analysis, beta-blocker use was associated with lower CRP than diuretics (1.97 vs 2.72 mg/L, P < .001).
- ACE inhibitor/ARB use was also associated with lower CRP than diuretics in monotherapy (2.25 mg/L, P = .046).
Conclusions:
- Beta-blocker use is linked to reduced CRP levels overall and in monotherapy.
- ACE inhibitor and ARB use in monotherapy is also associated with lower CRP levels.
- Further randomized trials are recommended to confirm these associations and their clinical implications.
Background:
The effects of different antihypertensive medication classes on C-reactive protein (CRP) levels are still not well characterized, and might be of relevance to treatment choices.
Methods:
We studied the association between antihypertensive medication class and CRP levels among participants with treated hypertension in the Multi-Ethnic Study of Atherosclerosis. We performed a cross-sectional study of hypertensive participants free of clinical cardiovascular disease who were taking one or more of the following medication classes: beta-blockers, calcium channel blockers, diuretics, and angiotensin-converting enzyme (ACE) inhibitors, or angiotensin II type I receptor blockers (ARB).
Results:
Among 2340 participants taking one or more antihypertensive medications, the mean serum CRP level was lower among participants taking a beta-blocker than among those not taking a beta-blocker (2.13 v 2.54 mg/L, P = .002). This difference persisted after multivariate adjustment (P = .021). There were no other statistically significant differences in multivariate models. Among 1314 participants receiving monotherapy, the multivariate adjusted mean CRP level among participants taking a beta-blocker was lower (1.97 mg/L) than those taking a diuretic (2.72 mg/L, P < .001). In this monotherapy group, participants taking an ACE inhibitor or ARB also had a lower adjusted mean CRP (2.25 mg/L) than those taking a diuretic (P = .046). African-American race/ethnicity did not modify any of those relationships.
Conclusions:
The beta-blocker use was associated with lower CRP levels overall and among participants on monotherapy, whereas ACE inhibitor and ARB use was associated with lower CRP levels among participants on monotherapy. These findings warrant further evaluation in randomized trials.
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