scholarly journals Neuroprotective Effect of IRL-1620, an Endothelin B Receptor Agonist, on a Pediatric Rat Model of Middle Cerebral Artery Occlusion

2018 ◽  
Vol 6 ◽  
Author(s):  
Enrique G. Cifuentes ◽  
Mary G. Hornick ◽  
Suresh Havalad ◽  
Ramona L. Donovan ◽  
Anil Gulati
Keyword(s):  
Middle Cerebral Artery ◽  
Middle Cerebral Artery Occlusion ◽  
Cerebral Artery ◽  
Rat Model ◽  
Receptor Agonist ◽  
Neuroprotective Effect ◽  
Artery Occlusion ◽  
Endothelin B Receptor ◽  
Endothelin B ◽  
Cerebral Artery Occlusion

scholarly journals Quercetin attenuates the reduction of parvalbumin in middle cerebral artery occlusion animal model

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Dong-Ju Park ◽  
Ju-Bin Kang ◽  
Fawad-Ali Shah ◽  
Phil-Ok Koh
Keyword(s):  
Middle Cerebral Artery ◽  
Middle Cerebral Artery Occlusion ◽  
Cerebral Artery ◽  
Neuroprotective Effect ◽  
Neuronal Cell ◽  
Artery Occlusion ◽  
Male Rats ◽  
Neurological Deficits ◽  
Glutamate Toxicity ◽  
Cerebral Artery Occlusion

Abstract Background Calcium is a critical factor involved in modulation of essential cellular functions. Parvalbumin is a calcium buffering protein that regulates intracellular calcium concentrations. It prevents rises in calcium concentrations and inhibits apoptotic processes during ischemic injury. Quercetin exerts potent antioxidant and anti-apoptotic effects during brain ischemia. We investigated whether quercetin can regulate parvalbumin expression in cerebral ischemia and glutamate toxicity-induced neuronal cell death. Adult male rats were treated with vehicle or quercetin (10 mg/kg) 30 min prior to middle cerebral artery occlusion (MCAO) and cerebral cortical tissues were collected 24 h after MCAO. We used various techniques including Western blot, reverse transcription-PCR, and immunohistochemical staining to elucidate the changes of parvalbumin expression. Results Quercetin ameliorated MCAO-induced neurological deficits and behavioral changes. Moreover, quercetin prevented MCAO-induced a decrease in parvalbumin expression. Conclusions These findings suggest that quercetin exerts a neuroprotective effect through regulation of parvalbumin expression.

Reliability of behavioral tests in the middle cerebral artery occlusion model of rat

2018 ◽  
Vol 53 (5) ◽  
pp. 478-490 ◽  
Author(s):  
Junghoon Yu ◽  
Jinkyoo Moon ◽  
Joonyoung Jang ◽  
Jee In Choi ◽  
Jooeun Jung ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Middle Cerebral Artery Occlusion ◽  
Cerebral Artery ◽  
Rat Model ◽  
Artery Occlusion ◽  
Behavioral Tests ◽  
Walking Test ◽  
Satisfactory Level ◽  
Cylinder Test ◽  
Cerebral Artery Occlusion

Stroke is one of the leading causes of death and disability worldwide, and its incidence is increasing. To overcome impairment from stroke, translational research for developing new therapeutic technologies has been conducted and middle cerebral artery occlusion (MCAo) in rat is the representative model. Since recovery from neurological impairment in contralateral limbs caused by brain damage is the major goal of treatment, behavioral tests that assess the relevant function are used. To determine therapeutic effect, obtaining reliable results of behavioral assessment is a prerequisite. However, studies on the reliability of behavioral tests in the MCAo rat model and necessity of prior training have not yet been reported. In this study, the authors investigate relative and absolute inter-rater reliabilities of modified neurological severity score (mNSS), cylinder test, and grid-walking test before training and repeated training every week until the reliability of results reached a satisfactory level. The training included repeated learning of the scoring system and decreasing disagreements among the raters. For MCAo modeling, adult male Sprague-Dawley rats were subjected to 90 min of transient MCAo. Six raters conducted behavioral tests via observation of video-recording on sham-operated and MCAo model rats at 3 or 7 days after the intervention. An independent experimenter randomly numbered each video clip to blind the experiment. The results of reliabilities were unacceptable before training and improved to a satisfactory level after 6 weeks of training in all of the tests. In conclusion, mNSS, cylinder test, and grid-walking test on the MCAo rat model are reliable evaluation methods after conducting appropriate training.

scholarly journals Neuroprotective Effect of Nevirapine on Cerebral Ischemic Stroke by Middle Cerebral Artery Occlusion in Wistar Rats

2016 ◽  
Vol 1 (01) ◽  
pp. 16-24
Author(s):  
Vasudha Bakshi ◽  
CH Maneesha Ram ◽  
Nazia Begum ◽  
Naveen Pathakala
Keyword(s):  
Middle Cerebral Artery ◽  
Middle Cerebral Artery Occlusion ◽  
Cerebral Artery ◽  
Wistar Rats ◽  
Neuroprotective Effect ◽  
Artery Occlusion ◽  
Neuroprotective Activity ◽  
Differential Leukocyte Count ◽  
Cognitive Improvement ◽  
Cerebral Artery Occlusion

Objective: To evaluate the neuroprotective effect of Nevirapine on cerebral ischemia stroke by middle cerebral artery occlusion in wistar rats. Methods: The rats were pre and post treated with Nevirapine (NVP) at selective doses (5, 10 mg/kg/g, p.o) for a period of 14 days followed by middle cerebral artery occlusion (MCAO). Neurobehavioral changes were evaluated by using Y-maze and open field habituation. Biochemical markers such as acetyl cholinesterase (AChE), glutamate, differential leukocyte count (DLC), lactate dehydrogenase (LDH), antioxidants such as superoxide dismutase (SOD), glutathione peroxidase (GPX) and catalase were estimated. Results: Obtain results revealed that 14 days of treatment with NVP was effective in averting neurotoxicity. NVP treatment significantly reduced AChE, glutamate, DLC, LDH and elevated levels of antioxidant parameters such as SOD, catalase and GPX.. Conclusion: These results clearly revealed that Nevirapine exhibited cognitive improvement which is related to its antioxidant and neuroprotective activity. Further studies are suggested to evaluate molecular mechanism of involved in neuroprotection.

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