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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Aerobic exercise training improves the role of high-density lipoprotein antioxidant and reduces plasma lipid peroxidation in type 2 diabetes mellitus

Full text
Author(s):
Iborra, R. T. [1] ; Ribeiro, I. C. D. [1] ; Neves, M. Q. T. S. [1] ; Charf, A. M. [1] ; Lottenberg, S. A. [1] ; Negrao, C. E. [2] ; Nakandakare, E. R. [1] ; Passarelli, M. [1]
Total Authors: 8
Affiliation:
[1] Univ Sao Paulo, Fac Med Sci, Lipids Lab LIM 10, BR-01246000 Sao Paulo - Brazil
[2] Univ Sao Paulo, Fac Med Sci, Inst Heart, BR-01246000 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS; v. 18, n. 6, p. 742-750, DEC 2008.
Web of Science Citations: 33
Abstract

In this study, we analyzed the effect of aerobic exercise training (AET) and of a single bout of exercise on plasma oxidative stress and on antioxidant defenses in type 2 diabetes mellitus (DM) and in healthy control subjects (C). DM and C did not differ regarding triglycerides, high-density lipoprotein cholesterol (HDL-c), insulin, and HOMA index at baseline and after AET. To measure the lag time for low-density lipoprotein (LDL) oxidation (LAG) and the maximal rate of conjugated diene formation (MCD), participants' plasma HDL(2) and HDL(3) were incubated with LDL from pooled healthy donors' plasma. In the presence of HDL(3), both LAG and MCD were similar in C and DM, but only in DM did AET improve LAG and reduce MCD. In the presence of HDL(2), the lower baseline LAG in DM equaled C after AET. MCD was unchanged in DM after AET, but was lower than C only after AET. Furthermore, after AET plasma thiobarbituric acid-reactive substances were reduced only in DM subjects. Despite not modifying the total plasma antioxidant status and serum paraoxonase-1 activity in both groups, AET lowered the plasma lipid peroxides, corrected the HDL(2), and improved the HDL(3) antioxidant efficiency in DM independent of the changes in blood glucose, insulin, and plasma HDL concentration and composition. (AU)