Hemoglobin Glycation Index Is Associated With Cardiovascular Diseases in People With Impaired Glucose Metabolism.

Abstract

Context:

There is a substantial interindividual variation in the association between glycated hemoglobin (HbA1c) and plasma glucose concentrations. Its impact on cardiovascular disease (CVD) has not been comprehensively evaluated.

Objective:

We examined associations between interindividual variations in HbA1c, which was estimated as the hemoglobin glycation index (HGI), and CVD.

Design, Setting, and Participants:

We performed a cross-sectional analysis with 1248 treatment-naïve subjects with prediabetes or diabetes. The HGI was defined as the measured HbA1c minus predicted HbA1c, which was calculated from the linear relationship between HbA1c and fasting plasma glucose levels.

Main Outcome Measures:

The prevalence of composite and individual CVDs including coronary artery disease (CAD), stroke, and peripheral artery disease (PAD).

Results:

The overall prevalence of composite CVD was 10.3% and individual prevalences of CAD, stroke, and PAD were 5.7%, 5.1%, and 1.3%, respectively. All prevalences significantly increased from the first to third tertile of HGI. In multivariate analysis, the highest HGI tertile was independently associated with composite CVD [odds ratio (95% confidence interval): 2.81 (1.59-4.98)], and individual CAD [2.30 (1.12-4.73)], stroke [3.40 (1.50-7.73)], and PAD [6.37 (1.18-34.33)] after adjustment for other CVD risk factors including HbA1c levels. Two consecutive measurements of HGI obtained on different days showed good correlation (r = 0.651, P < 0.001) and high concordance rate in the tertile classification (69.1%).

Conclusions:

High HGI was independently associated with overall and individual CVDs. This result suggests that discrepancy between HbA1c and fasting glucose levels can reflect vascular health in subjects with impaired glucose metabolism.

• Authors: Chang Ho Ahn, Se Hee Min, Dong-Hwa Lee, Tae Jung Oh, Kyoung Min Kim, Jae Hoon Moon, Sung Hee Choi, Kyong Soo Park, Hak Chul Jang, Joon Ha, Arthur S Sherman, Soo Lim
• Journal: The Journal of clinical endocrinology and metabolism (J Clin Endocrinol Metab) Vol. 102 Issue 8 Pg. 2905-2913 (08 01 2017) ISSN: 1945-7197 [Electronic] United States
• PMID: 28541544 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2017 Endocrine Society

Chemical References

• Blood Glucose
• Glycated Hemoglobin A
• hemoglobin A1c protein, human

Topics

• Adult
• Aged
• Blood Glucose (metabolism)
• Cardiovascular Diseases (epidemiology, metabolism)
• Cohort Studies
• Coronary Artery Disease (epidemiology, metabolism)
• Cross-Sectional Studies
• Diabetes Mellitus (epidemiology, metabolism)
• Female
• Glucose Intolerance (epidemiology, metabolism)
• Glucose Tolerance Test
• Glycated Hemoglobin (metabolism)
• Humans
• Male
• Middle Aged
• Peripheral Arterial Disease (epidemiology, metabolism)
• Prediabetic State (epidemiology, metabolism)
• Prevalence
• Stroke (epidemiology, metabolism)