PMID- 23252792 OWN - NLM STAT- MEDLINE DCOM- 20130927 LR - 20191210 IS - 1460-2202 (Electronic) IS - 0271-3683 (Linking) VI - 38 IP - 3 DP - 2013 Mar TI - Hydrogen-rich saline prevents early neurovascular dysfunction resulting from inhibition of oxidative stress in STZ-diabetic rats. PG - 396-404 LID - 10.3109/02713683.2012.748919 [doi] AB - PURPOSE: Diabetic retinopathy (DR) is characterized by increased oxidative and nitrosative stress, both of which lead to neurotoxicity and vascular permeability. Previous studies on a variety of organs indicate that hydrogen-rich saline not only has considerable antioxidant and anti-inflammatory properties, but also suppresses oxidative stress-induced injury. In the present study, we assessed the effects of hydrogen-rich saline on neurovascular dysfunction and oxidative stress in an animal model (rat) of DR. MATERIALS AND METHODS: Male Sprague-Dawley rats with streptozotocin (STZ)-induced diabetes mellitus (DM) were injected intraperitoneally with 5 ml/kg hydrogen-saturated (experimental) or plain (control) saline daily for one month. Visual function and blood-retinal barrier (BRB) integrity were evaluated by electroretinography (ERG) and bovine serum albumin (BSA)-fluorescence, respectively. Histological changes in the inner retina were assessed by light microscopy. Biomarkers of oxidative stress, including 4-hydroxynonenal (4-HNE) and 8-hydroxy-2-deoxyguanosine (8-OH-dG), and antioxidant enzymes, including superoxide dismutase, glutathione peroxidase, glutathione reductase and glutathione transferase, were evaluated by ELISA. Synaptophysin and brain-derived neurotrophic factor (BDNF) levels were measured by immunoblotting. RESULTS: STZ-diabetic rats were marked by clearly reduced b-wave amplitudes and oscillatory potentials, DM-related BRB breakdown and histological changes in the inner retina, all of which were suppressed following treatment with hydrogen-rich saline. Furthermore, hydrogen-rich saline reduced oxidative stress, increased antioxidant enzyme activities and preserved synaptophysin and BDNF levels in the diabetic rat retina. CONCLUSIONS: Based on its inhibition of oxidative stress and up-regulation of anti-oxidative enzymes, we conclude that hydrogen-rich saline is a potentially valuable therapeutic modality for the treatment of DR. FAU - Feng, Yanqing AU - Feng Y AD - Department of Ophthalmology, Shanghai Kongjiang Hospital, Shanghai, China. FAU - Wang, Ruobing AU - Wang R FAU - Xu, Jiajun AU - Xu J FAU - Sun, Jingchuan AU - Sun J FAU - Xu, Tao AU - Xu T FAU - Gu, Qing AU - Gu Q FAU - Wu, Xingwei AU - Wu X LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121219 PL - England TA - Curr Eye Res JT - Current eye research JID - 8104312 RN - 0 (Aldehydes) RN - 0 (Blood Glucose) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Synaptophysin) RN - 451W47IQ8X (Sodium Chloride) RN - 88847-89-6 (8-Hydroxy-2'-Deoxyguanosine) RN - EC 1.- (Oxidoreductases) RN - G9481N71RO (Deoxyguanosine) RN - K1CVM13F96 (4-hydroxy-2-nonenal) SB - IM MH - 8-Hydroxy-2'-Deoxyguanosine MH - Aldehydes/metabolism MH - Animals MH - Blood Glucose/metabolism MH - Blood-Retinal Barrier/drug effects MH - Blotting, Western MH - Body Weight MH - Brain-Derived Neurotrophic Factor/metabolism MH - Deoxyguanosine/analogs & derivatives/metabolism MH - Diabetes Mellitus, Experimental/metabolism/physiopathology/*prevention & control MH - Diabetic Retinopathy/metabolism/physiopathology/*prevention & control MH - Electroretinography MH - Enzyme-Linked Immunosorbent Assay MH - Male MH - Oxidative Stress/*drug effects MH - Oxidoreductases/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Retinal Neovascularization/physiopathology/*prevention & control MH - Sodium Chloride/*pharmacology MH - Synaptophysin/metabolism EDAT- 2012/12/21 06:00 MHDA- 2013/09/28 06:00 CRDT- 2012/12/21 06:00 PHST- 2012/12/21 06:00 [entrez] PHST- 2012/12/21 06:00 [pubmed] PHST- 2013/09/28 06:00 [medline] AID - 10.3109/02713683.2012.748919 [doi] PST - ppublish SO - Curr Eye Res. 2013 Mar;38(3):396-404. doi: 10.3109/02713683.2012.748919. Epub 2012 Dec 19.