Linked Life Data

21466838

Source:http://linkedlifedata.com/resource/pubmed/id/21466838

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2011-5-9
pubmed:abstractText
More than 65% of mortality among diabetics is due to stroke and heart disease. The major side effect of intensive therapy in both type 1 and type 2 diabetics is recurrent hypoglycemic episodes (RH). Our previous study in a rat model of insulin-requiring diabetes indicated that RH exacerbates cerebral ischemic damage. Studies related to RH in hypoglycemia unawareness suggest that RH may be deleterious to outcome following cerebral ischemia owing to systemic effects, since hormonal response to hypoglycemia is impaired following RH. The goal of the present study was to determine if RH increases oxygen-glucose deprivation (OGD)-induced damage in hippocampal organotypic slices, which are devoid of systemic influence. Hippocampal slices cultured in ex vivo conditions for 9-10 days were exposed to ten 30-min episodes of "hypoglucose" (to mimic the hypoglycemic condition) medium (1.06 mM) twice a day. Slices were exposed to OGD 12h after the last hypo/normo-glucose exposure. OGD in control slices resulted in 60% neuronal death. The percentage of cell death in RH-treated slices was significantly higher by 24% than in control slices. The results demonstrate that RH can affect brain cells in the absence of humoral influence. In conclusion, the previous exposure of hippocampal slices to RH exacerbates OGD-induced damage. Understanding the mechanism by which RH increases ischemic damage in diabetics will help improve outcome following stroke.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1872-7972
pubmed:author
pubmed:copyrightInfo
Copyright © 2011 Elsevier Ireland Ltd. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
27
pubmed:volume
496
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
25-9
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Recurrent hypoglycemia increases oxygen glucose deprivation-induced damage in hippocampal organotypic slices.
pubmed:affiliation
Cerebral Vascular Disease Research Center, Department of Neurology, 1420 NW 9th Ave., TSL/203E, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't