期刊
METABOLIC BRAIN DISEASE
卷 34, 期 3, 页码 721-732出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11011-018-0363-7
关键词
Antioxidative; Diabetic brain; Glucose uptake; Proinflammatory; Vernonia amygdalina
资金
- Research Office, University of KwaZulu-Natal (UKZN), Durban
- National Research Foundation (NRF), Pretoria, South Africa
Brain glucose uptake is usually reduced in type 2 diabetes owing to downregulation of brain glucose transporters. The ability of Vernonia amygdalina to stimulate glucose uptake as well as ameliorate glucose-induced oxidative stress and proinflammation were investigated in rat brain. Hot infusion of V. amygdalina leaves was incubated with rat brain tissues for 2h in the presence of glucose. Another incubation with glucose only, served as negative control while metformin served aspositive control. Incubation of brain tissues with V. amygdalina led to significant (p<0.05) increase inglucose uptake, reduced glutathione, nitric oxide and non-thiol proteins levels, superoxide dismutase, catalase and ATPase activities, while concomitantly decrease inmyeloperoxidase activity and malondialdehyde level compared to the negativecontrol. Incubation with glucose only, led to the development of nitrate, amide II and amide I functional groups which were removed on incubation with the infusion. LC-MS analysis revealed depletion of oxidativestress-induced 2-keto-glutaramic acid and cysteinyl-tyrosine metabolites in brain tissues, with concomitant generation of S-formylglutathione and adenosine tetraphosphate by the infusion. Pathway analysis of the metabolites revealed an activation of pyruvate metabolism pathway in the negative control, with the infusion reducing the intensity fold. LC-MS analysis of the infusion revealed the presence of l-serine, l-cysteine, l-proline, nicotinic acid, cumidine, salicylic acid, isoquinoline, 3-methyl-, and -octalactone. Except for l-serine, l-cysteine and l-proline, the other compounds were predicted to be permeable across the blood brain barrier. These results indicate the brain glucose uptake stimulatory and neuroprotective effect of V. amygdalina.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据