PMID- 23978333 OWN - NLM STAT- MEDLINE DCOM- 20140724 LR - 20220408 IS - 1095-9319 (Electronic) IS - 0026-2862 (Linking) VI - 90 DP - 2013 Nov TI - Possible involvement of oxidative stress as a causative factor in blood-brain barrier dysfunction in stroke-prone spontaneously hypertensive rats. PG - 169-72 LID - S0026-2862(13)00147-7 [pii] LID - 10.1016/j.mvr.2013.08.005 [doi] AB - To elucidate the pathogenic roles of oxidative stress on blood-brain-barrier (BBB) dysfunction, we compared the chronological changes of oxidative stress in blood and cerebral tissue between stroke-prone spontaneously hypertensive rats (SHRSP) and normotensive Wistar-Kyoto rats (WKY). Plasma and tissue oxidative stress was assayed by the diacron-reactive oxygen metabolite (d-ROM) test using 8-hydroxy-2'-deoxyguanosine (8-OHdG) as a reference oxidative stress marker. The plasma and cerebral cortex d-ROM levels increased in SHRSP after 16weeks of age, but not in WKY. There were no significant differences in 8-OHdG or lipid peroxidation markers between SHRSP and WKY. Antioxidant capacity, as estimated by the biological antioxidant potential test, was similar between SHRSP and WKY at all ages examined. The changes in plasma and tissue d-ROM levels coincided with changes in glucose transporter-1 and aquaporin-4 expression, as functional constituents of the BBB. These results indicate that plasma oxidative stress increases before the onset of tissue damage, and plays an important role in BBB dysfunction rather than decreases in antioxidant capacity. The plasma d-ROM test appears to be useful for predicting vasogenic cerebral edema in severe hypertension. CI - (c) 2013. FAU - Takemori, Kumiko AU - Takemori K AD - Department of Food Science and Nutrition, Faculty of Agriculture, Kinki University, Nara, Japan. Electronic address: kuriman@nara.kindai.ac.jp. FAU - Murakami, Tetsuo AU - Murakami T FAU - Kometani, Takashi AU - Kometani T FAU - Ito, Hiroyuki AU - Ito H LA - eng PT - Journal Article DEP - 20130824 PL - United States TA - Microvasc Res JT - Microvascular research JID - 0165035 RN - 0 (Aqp4 protein, rat) RN - 0 (Aquaporin 4) RN - 0 (Biomarkers) RN - 0 (Glucose Transporter Type 1) RN - 0 (Slc2a1 protein, rat) RN - 88847-89-6 (8-Hydroxy-2'-Deoxyguanosine) RN - G9481N71RO (Deoxyguanosine) SB - IM MH - 8-Hydroxy-2'-Deoxyguanosine MH - Animals MH - Aquaporin 4/metabolism MH - Biomarkers/metabolism MH - Blood Pressure MH - Blood-Brain Barrier/*metabolism/physiopathology MH - Body Weight MH - Brain Edema/*etiology/metabolism/physiopathology MH - *Capillary Permeability MH - Deoxyguanosine/analogs & derivatives/metabolism MH - Disease Models, Animal MH - Glucose Transporter Type 1/metabolism MH - Hypertension/*complications/metabolism/physiopathology MH - Lipid Peroxidation MH - Male MH - *Oxidative Stress MH - Rats MH - Rats, Inbred SHR MH - Rats, Inbred WKY MH - Stroke/*etiology/metabolism/physiopathology MH - Time Factors EDAT- 2013/08/28 06:00 MHDA- 2014/07/25 06:00 CRDT- 2013/08/28 06:00 PHST- 2013/03/28 00:00 [received] PHST- 2013/06/13 00:00 [revised] PHST- 2013/08/14 00:00 [accepted] PHST- 2013/08/28 06:00 [entrez] PHST- 2013/08/28 06:00 [pubmed] PHST- 2014/07/25 06:00 [medline] AID - S0026-2862(13)00147-7 [pii] AID - 10.1016/j.mvr.2013.08.005 [doi] PST - ppublish SO - Microvasc Res. 2013 Nov;90:169-72. doi: 10.1016/j.mvr.2013.08.005. Epub 2013 Aug 24.