Effects of Glucose Load and Nateglinide Intervention on Endothelial Function and Oxidative Stress. (7th April 2013)

• Record Type: Journal Article
• Authors: Wang, Leilei; Guo, Lixin; Zhang, Lina; Zhou, Yan; He, Qinghua; Zhang, Zheng; Wang, Meng
• Other Names: Jia Weiping Academic Editor.
• Is Part Of: Journal of diabetes research. Volume 2013(2013)
• Publication Date: 2013-04-07
• Subjects: Diabetes -- Periodicals; Diabetes -- Pathophysiology -- Periodicals; Diabetes -- Prevention -- Periodicals; Diabetes -- Etiology -- Periodicals; Diabetes -- Epidemiology -- Periodicals; Diabetes -- Pathogenesis -- Periodicals; 616.462005
• DOI: 10.1155/2013/849295
• Languages: English
• ISSNs: 2314-6745

Abstract

Abstract : We analysed endothelial function and oxidative stress in patients with abnormal glucose metabolism, the effect of glucose load, and the impact of nateglinide. 109 participants were grouped into newly diagnosed diabetes, prediabetes, and control. Fasting plasma glucose (FPG), postprandial plasma glucose (PPG), glycosylated haemoglobin (HbA 1 c ), and glycated albumin (GA) varied significantly among the study groups (P < 0 . 01 ). Nitric oxide (NO) and insulin resistance index (HOMA-IRI) levels were markedly different between the newly diagnosed diabetes and the control (P < 0.01 ). Glucose loading lowered flow-mediated endothelium-dependent dilation (FMEDD), NO, and superoxide dismutase (SOD) (P < 0 . 01 ). Fasting and glucose loading FMEDD, FPG, PPG, HbA 1 c, and GA were negatively correlated (r = - 0 . 4 573, −0.4602, −0.3895, −0.3897, and r = - 0.4594, −0.4803, −0.4494, −0.3885; P < 0 . 01 ), whereas NO, SOD, and HOMA- β were positively correlated (r = 0.2983, 0.3211, 0.311, and r = 0.1954, 0.361, 0.2569; P < 0 . 05 ). After the treatment with nateglinide, significant decreases in FPG, PPG, GA, HbA1C, endothelin-1(ET-1), malondialdehyde (MDA), and HOMA-IRI were observed, whereas FMEDD, NO, and SOD increased (P < 0 . 01 ). Thus, the study demonstrated the adverse effect of glucose load on endothelial function and oxidative stress. Nateglinide lowers blood glucose, reduces insulin resistance and oxidative stress, and improves endothelial function in newly diagnosed diabetes.