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Article Publish Status: FREE
Abstract Title:

Serum carboxymethyl-lysine, an advanced glycation end product, is associated with arterial stiffness in older adults.

Abstract Source:

J Hypertens. 2015 Apr ;33(4):797-803; discussion 803. PMID: 25915884

Abstract Author(s):

Richard D Semba, Kai Sun, Ann V Schwartz, Ravi Varadhan, Tamara B Harris, Suzanne Satterfield, Melissa Garcia, Luigi Ferrucci, Anne B Newman,

Article Affiliation:

Richard D Semba

Abstract:

OBJECTIVE: The objective of this study is to examine the relationship of serum carboxymethyl-lysine (CML), an advanced glycation end product (AGE), with pulse pressure (PP), aortic pulse wave velocity (aPWV) and hypertension in older adults.

BACKGROUND: AGEs are bioactive molecules that accumulate in tissues with ageing and can both cross-link collagen and induce inflammation in model systems. The relationship of AGEs with arterial stiffness and hypertension has not been well characterized in community-dwelling older adults.

METHODS: We measured serum CML and blood pressure in 3044 adults, aged 70-79 years, who participated in the Health, Aging and Body Composition Study, a population-based study of ageing in Pittsburgh, Pennsylvania and Memphis, Tennessee. aPWV was measured in 2468 participants.

RESULTS: Participants in the highest tertile of serum CML had higher PP (highest tertile: beta = 2.85, SE = 0.82, P = 0.0005; middle tertile: beta = 0.60, SE = 0.80, P = 0.45), and higher aPWV (highest tertile: beta = 51.4, SE = 20.1, P = 0.01; middle tertile: beta = 3.2, SE = 19.8, P = 0.87) than those in the lowest tertile in multivariable linear regression models adjusting for age, sex, race, education, BMI, smoking, alcohol use, total cholesterol, high-density lipoprotein (HDL) cholesterol, diabetes, cardiovascular disease and chronic kidney disease. Participants in the highest and middle tertiles of serum CML had higher odds of hypertension [odds ratio (OR) 1.32, 95% confidence interval (95% CI) 1.06-1.60, P = 0.005; OR 1.27, 95% CI 1.05-1.53, P = 0.01, respectively] than those in the lowest tertile in a multivariable logistic regression model adjusting for the same covariates.

CONCLUSION: Elevated serum CML was associated with arterial stiffness, as reflected by higher PP and aPWV, in older, community-dwelling adults.

Study Type : Human Study

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