NDLI: Diabetic Hyperglycemia Aggravates Seizures and Status Epilepticus-induced Hippocampal Damage

Content Provider	Springer Nature Link
Author	Huang, Chin Wei Cheng, Juei Tang Tsai, Jing Jane Wu, Sheng Nan Huang, Chao Ching
Copyright Year	2009
Abstract	Epileptic seizures in diabetic hyperglycemia (DH) are not uncommon. This study aimed to determine the acute behavioral, pathological, and electrophysiological effects of status epilepticus (SE) on diabetic animals. Adult male Sprague-Dawley rats were first divided into groups with and without streptozotocin (STZ)-induced diabetes, and then into treatment groups given a normal saline (NS) (STZ-only and NS-only) or a lithium-pilocarpine injection to induce status epilepticus (STZ + SE and NS + SE). Seizure susceptibility, severity, and mortality were evaluated. Serial Morris water maze test and hippocampal histopathology results were examined before and 24 h after SE. Tetanic stimulation-induced long-term potentiation (LTP) in a hippocampal slice was recorded in a multi-electrode dish system. We also used a simulation model to evaluate intracellular adenosine triphosphate (ATP) and neuroexcitability. The STZ + SE group had a significantly higher percentage of severe seizures and SE-related death and worse learning and memory performances than the other three groups 24 h after SE. The STZ + SE group, and then the NS + SE group, showed the most severe neuronal loss and mossy fiber sprouting in the hippocampal CA3 area. In addition, LTP was markedly attenuated in the STZ + SE group, and then the NS + SE group. In the simulation, increased intracellular ATP concentration promoted action potential firing. This finding that rats with DH had more brain damage after SE than rats without diabetes suggests the importance of intensively treating hyperglycemia and seizures in diabetic patients with epilepsy.
Starting Page	71
Ending Page	81
Page Count	11
File Format	PDF
ISSN	10298428
Journal	Neurotoxicity Research
Volume Number	15
Issue Number	1
e-ISSN	14763524
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-02-18
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Diabetes Seizures Status epilepticus Neurobiology Pharmacology/Toxicology Neurochemistry Neurology Pharmaceutical Sciences/Technology Neurosciences
Content Type	Text
Resource Type	Article
Subject	Neuroscience Toxicology

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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