Abstract |
Recent trials have shown that the prostaglandin E2 EP1 receptor is responsible for NMDA excitotoxicity in the brain after injury. Consequently, in this study, we investigated the use of SC-51089, a selective prostaglandin E2 EP1 receptor antagonist, as a pre-treatment modality to decrease cell death, reduce brain edema, and improve neurobehavioral function after surgically induced brain injury (SBI) in mice. Eleven-week-old C57 black mice (n=82) were randomly assigned to four groups: sham (n=31), SBI (n=27), SBI treated with SC51089 at 10 μg/kg (n=7), and SBI treated with SC51089 at 100 μg/kg (n=17). Treated groups received a single dose of SC51089 intrapertioneally at 12 and 1 h pre-surgery. SBI was performed by resecting the right frontal lobe using a frontal craniotomy. Postoperative assessment occurred at 24 and 72 h, and included neurobehavioral testing and measurement of brain water content and cell death. Results indicated that neither low- nor high-dose EP1 receptor inhibition protected against the SBI-related effects on brain edema formation or cell death. There was however a significant improvement in neurobehavioral function 24 h post-SBI with both dosing regimens. Further studies will be needed to assess the potential therapeutic role of EP1 receptor targeting in SBI.
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Authors | Nikan H Khatibi, Vikram Jadhav, Brenden Matus, Nancy Fathali, Robert Martin, Richard Applegate, Jiping Tang, John H Zhang |
Journal | Acta neurochirurgica. Supplement
(Acta Neurochir Suppl)
Vol. 111
Pg. 277-81
( 2011)
ISSN: 0065-1419 [Print] Austria |
PMID | 21725768
(Publication Type: Journal Article, Research Support, N.I.H., Extramural)
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Chemical References |
- Hydrazines
- Neuroprotective Agents
- Oxazepines
- Receptors, Prostaglandin E, EP1 Subtype
- SC 51089
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Topics |
- Animals
- Brain Edema
(etiology, prevention & control)
- Brain Injuries
(etiology, prevention & control)
- Cell Death
(drug effects)
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Functional Laterality
- Hydrazines
(therapeutic use)
- Male
- Mice
- Nervous System Diseases
(etiology, prevention & control)
- Neuroprotective Agents
(therapeutic use)
- Neurosurgical Procedures
(adverse effects)
- Oxazepines
(therapeutic use)
- Receptors, Prostaglandin E, EP1 Subtype
(antagonists & inhibitors)
- Time Factors
- Treatment Failure
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