TY - JOUR
T1 - Metabolic syndrome and insulin resistance in the TROPHY sub-study
T2 - Contrasting views in patients with high-normal blood pressure
AU - Egan, Brent M.
AU - Papademetriou, Vasilios
AU - Wofford, Marion
AU - Calhoun, David
AU - Fernandes, Jyotika
AU - Riehle, Jessica E.
AU - Nesbitt, Shawna
AU - Michelson, Eric
AU - Julius, Stevo
N1 - Funding Information:
The data in this report reflect baseline information obtained in a subset of patients participating in the Trial of Preventing Hypertension (TROPHY) sponsored by AstraZeneca Pharmaceuticals LP, Wilmington DE. The TROPHY Sub-study was also supported in part by the National Institutes of Health (NIH) Heart Lung & Blood Institute HL58794, HL04290 and by General Clinical Research Center RR-01070 from the NIH, Division of Research Resources.
PY - 2005/1
Y1 - 2005/1
N2 - Although insulin resistance and metabolic syndrome are often used synonymously, concordance is not established. Metabolic, hemodynamic, and hormonal data were analyzed on 141 patients in the Trial of Preventing Hypertension (TROPHY) Sub-Study with high-normal blood pressure (BP) (130 to 139/85 to 89 mm Hg [mean ± SD, 133 ± 8/85 ± 6 mm Hg]; age, 48 ± 9 years; body mass index 30 ± 5 kg/m 2). Fifty-three of 141 subjects (37.6%; ∼3/8) had the metabolic syndrome based on three or more of the five risk factors (BP, waist circumference, fasting triglycerides, HDL-cholesterol, glucose). To maintain consistency in proportions, insulin resistance was defined as the upper 3/8 of the distribution on the homeostatic model assessment (HOMA), which uses fasting glucose and insulin and a modified Matsuda-DeFronzo index, based on fasting, 1- and 2-h glucose and insulin values. Among metabolic syndrome patients, 57% and 55% were in the upper 3/8 of the distribution for insulin resistance by HOMA and Matsuda-DeFronzo, respectively. Among subjects without the metabolic syndrome, 26% and 27% were insulin resistant by HOMA and Matsuda-DeFronzo criteria. The proportion of patients with metabolic syndrome and insulin resistance increased strongly and similarly with increasing body mass index. However, metabolic syndrome and insulin resistance were different compared with their respective controls in the lower 5/8 of the distribution, in waist/hip ratios, fasting and 1-h insulin, HDL-cholesterol, heart rate, and systolic BP responses to exercise and plasma renin, angiotensin, and aldosterone. The findings suggest that metabolic syndrome and insulin resistance are not synonymous anthropometrically, metabolically, hemodynamically, or hormonally in patients with high-normal BP.
AB - Although insulin resistance and metabolic syndrome are often used synonymously, concordance is not established. Metabolic, hemodynamic, and hormonal data were analyzed on 141 patients in the Trial of Preventing Hypertension (TROPHY) Sub-Study with high-normal blood pressure (BP) (130 to 139/85 to 89 mm Hg [mean ± SD, 133 ± 8/85 ± 6 mm Hg]; age, 48 ± 9 years; body mass index 30 ± 5 kg/m 2). Fifty-three of 141 subjects (37.6%; ∼3/8) had the metabolic syndrome based on three or more of the five risk factors (BP, waist circumference, fasting triglycerides, HDL-cholesterol, glucose). To maintain consistency in proportions, insulin resistance was defined as the upper 3/8 of the distribution on the homeostatic model assessment (HOMA), which uses fasting glucose and insulin and a modified Matsuda-DeFronzo index, based on fasting, 1- and 2-h glucose and insulin values. Among metabolic syndrome patients, 57% and 55% were in the upper 3/8 of the distribution for insulin resistance by HOMA and Matsuda-DeFronzo, respectively. Among subjects without the metabolic syndrome, 26% and 27% were insulin resistant by HOMA and Matsuda-DeFronzo criteria. The proportion of patients with metabolic syndrome and insulin resistance increased strongly and similarly with increasing body mass index. However, metabolic syndrome and insulin resistance were different compared with their respective controls in the lower 5/8 of the distribution, in waist/hip ratios, fasting and 1-h insulin, HDL-cholesterol, heart rate, and systolic BP responses to exercise and plasma renin, angiotensin, and aldosterone. The findings suggest that metabolic syndrome and insulin resistance are not synonymous anthropometrically, metabolically, hemodynamically, or hormonally in patients with high-normal BP.
KW - Metabolic syndrome
KW - angiotensin
KW - arterial compliance
KW - blood pressure
KW - exercise
KW - insulin resistance
KW - leptin
KW - renin
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U2 - 10.1016/j.amjhyper.2004.08.008
DO - 10.1016/j.amjhyper.2004.08.008
M3 - Article
C2 - 15691610
AN - SCOPUS:13244267196
SN - 0895-7061
VL - 18
SP - 3
EP - 12
JO - American Journal of Hypertension
JF - American Journal of Hypertension
IS - 1
ER -